diff --git a/components/engine/cli/command/service/opts.go b/components/engine/cli/command/service/opts.go index 52971ae833..4ea78c6af7 100644 --- a/components/engine/cli/command/service/opts.go +++ b/components/engine/cli/command/service/opts.go @@ -297,7 +297,7 @@ func (e *endpointOptions) ToEndpointSpec() *swarm.EndpointSpec { ports, portBindings, _ := nat.ParsePortSpecs(e.ports.GetAll()) for port := range ports { - portConfigs = append(portConfigs, convertPortToPortConfig(port, portBindings)...) + portConfigs = append(portConfigs, ConvertPortToPortConfig(port, portBindings)...) } return &swarm.EndpointSpec{ @@ -306,7 +306,8 @@ func (e *endpointOptions) ToEndpointSpec() *swarm.EndpointSpec { } } -func convertPortToPortConfig( +// ConvertPortToPortConfig converts ports to the swarm type +func ConvertPortToPortConfig( port nat.Port, portBindings map[nat.Port][]nat.PortBinding, ) []swarm.PortConfig { diff --git a/components/engine/cli/command/service/update.go b/components/engine/cli/command/service/update.go index f5acc2c511..1214b03a53 100644 --- a/components/engine/cli/command/service/update.go +++ b/components/engine/cli/command/service/update.go @@ -639,7 +639,7 @@ func updatePorts(flags *pflag.FlagSet, portConfig *[]swarm.PortConfig) error { ports, portBindings, _ := nat.ParsePortSpecs(values) for port := range ports { - newConfigs := convertPortToPortConfig(port, portBindings) + newConfigs := ConvertPortToPortConfig(port, portBindings) for _, entry := range newConfigs { if v, ok := portSet[portConfigToString(&entry)]; ok && v != entry { return fmt.Errorf("conflicting port mapping between %v:%v/%s and %v:%v/%s", entry.PublishedPort, entry.TargetPort, entry.Protocol, v.PublishedPort, v.TargetPort, v.Protocol) diff --git a/components/engine/cli/command/stack/cmd.go b/components/engine/cli/command/stack/cmd.go index 4189504403..ff71e0ddfa 100644 --- a/components/engine/cli/command/stack/cmd.go +++ b/components/engine/cli/command/stack/cmd.go @@ -19,7 +19,6 @@ func NewStackCommand(dockerCli *command.DockerCli) *cobra.Command { Tags: map[string]string{"experimental": "", "version": "1.25"}, } cmd.AddCommand( - newConfigCommand(dockerCli), newDeployCommand(dockerCli), newListCommand(dockerCli), newRemoveCommand(dockerCli), diff --git a/components/engine/cli/command/stack/common.go b/components/engine/cli/command/stack/common.go index 4776ec1b42..b94c108667 100644 --- a/components/engine/cli/command/stack/common.go +++ b/components/engine/cli/command/stack/common.go @@ -46,3 +46,11 @@ func getNetworks( ctx, types.NetworkListOptions{Filters: getStackFilter(namespace)}) } + +type namespace struct { + name string +} + +func (n namespace) scope(name string) string { + return n.name + "_" + name +} diff --git a/components/engine/cli/command/stack/config.go b/components/engine/cli/command/stack/config.go deleted file mode 100644 index 56e554a86e..0000000000 --- a/components/engine/cli/command/stack/config.go +++ /dev/null @@ -1,39 +0,0 @@ -package stack - -import ( - "github.com/docker/docker/cli" - "github.com/docker/docker/cli/command" - "github.com/docker/docker/cli/command/bundlefile" - "github.com/spf13/cobra" -) - -type configOptions struct { - bundlefile string - namespace string -} - -func newConfigCommand(dockerCli *command.DockerCli) *cobra.Command { - var opts configOptions - - cmd := &cobra.Command{ - Use: "config [OPTIONS] STACK", - Short: "Print the stack configuration", - Args: cli.ExactArgs(1), - RunE: func(cmd *cobra.Command, args []string) error { - opts.namespace = args[0] - return runConfig(dockerCli, opts) - }, - } - - flags := cmd.Flags() - addBundlefileFlag(&opts.bundlefile, flags) - return cmd -} - -func runConfig(dockerCli *command.DockerCli, opts configOptions) error { - bundle, err := loadBundlefile(dockerCli.Err(), opts.namespace, opts.bundlefile) - if err != nil { - return err - } - return bundlefile.Print(dockerCli.Out(), bundle) -} diff --git a/components/engine/cli/command/stack/deploy.go b/components/engine/cli/command/stack/deploy.go index 435a9193b4..33dd15e5a7 100644 --- a/components/engine/cli/command/stack/deploy.go +++ b/components/engine/cli/command/stack/deploy.go @@ -2,16 +2,26 @@ package stack import ( "fmt" + "io/ioutil" + "os" + "sort" "strings" "github.com/spf13/cobra" "golang.org/x/net/context" + "github.com/aanand/compose-file/loader" + composetypes "github.com/aanand/compose-file/types" "github.com/docker/docker/api/types" + "github.com/docker/docker/api/types/mount" + networktypes "github.com/docker/docker/api/types/network" "github.com/docker/docker/api/types/swarm" "github.com/docker/docker/cli" "github.com/docker/docker/cli/command" - "github.com/docker/docker/cli/command/bundlefile" + servicecmd "github.com/docker/docker/cli/command/service" + "github.com/docker/docker/opts" + runconfigopts "github.com/docker/docker/runconfig/opts" + "github.com/docker/go-connections/nat" ) const ( @@ -20,6 +30,7 @@ const ( type deployOptions struct { bundlefile string + composefile string namespace string sendRegistryAuth bool } @@ -30,10 +41,10 @@ func newDeployCommand(dockerCli *command.DockerCli) *cobra.Command { cmd := &cobra.Command{ Use: "deploy [OPTIONS] STACK", Aliases: []string{"up"}, - Short: "Create and update a stack from a Distributed Application Bundle (DAB)", + Short: "Deploy a new stack or update an existing stack", Args: cli.ExactArgs(1), RunE: func(cmd *cobra.Command, args []string) error { - opts.namespace = strings.TrimSuffix(args[0], ".dab") + opts.namespace = args[0] return runDeploy(dockerCli, opts) }, Tags: map[string]string{"experimental": "", "version": "1.25"}, @@ -41,57 +52,160 @@ func newDeployCommand(dockerCli *command.DockerCli) *cobra.Command { flags := cmd.Flags() addBundlefileFlag(&opts.bundlefile, flags) + addComposefileFlag(&opts.composefile, flags) addRegistryAuthFlag(&opts.sendRegistryAuth, flags) return cmd } func runDeploy(dockerCli *command.DockerCli, opts deployOptions) error { - bundle, err := loadBundlefile(dockerCli.Err(), opts.namespace, opts.bundlefile) - if err != nil { - return err + switch { + case opts.bundlefile == "" && opts.composefile == "": + return fmt.Errorf("Please specify either a bundle file (with --bundle-file) or a Compose file (with --compose-file).") + case opts.bundlefile != "" && opts.composefile != "": + return fmt.Errorf("You cannot specify both a bundle file and a Compose file.") + case opts.bundlefile != "": + return deployBundle(dockerCli, opts) + default: + return deployCompose(dockerCli, opts) } - - info, err := dockerCli.Client().Info(context.Background()) - if err != nil { - return err - } - if !info.Swarm.ControlAvailable { - return fmt.Errorf("This node is not a swarm manager. Use \"docker swarm init\" or \"docker swarm join\" to connect this node to swarm and try again.") - } - - networks := getUniqueNetworkNames(bundle.Services) - ctx := context.Background() - - if err := updateNetworks(ctx, dockerCli, networks, opts.namespace); err != nil { - return err - } - return deployServices(ctx, dockerCli, bundle.Services, opts.namespace, opts.sendRegistryAuth) } -func getUniqueNetworkNames(services map[string]bundlefile.Service) []string { - networkSet := make(map[string]bool) - for _, service := range services { - for _, network := range service.Networks { - networkSet[network] = true +func deployCompose(dockerCli *command.DockerCli, opts deployOptions) error { + configDetails, err := getConfigDetails(opts) + if err != nil { + return err + } + + config, err := loader.Load(configDetails) + if err != nil { + if fpe, ok := err.(*loader.ForbiddenPropertiesError); ok { + return fmt.Errorf("Compose file contains unsupported options:\n\n%s\n", + propertyWarnings(fpe.Properties)) } + + return err } - networks := []string{} - for network := range networkSet { - networks = append(networks, network) + unsupportedProperties := loader.GetUnsupportedProperties(configDetails) + if len(unsupportedProperties) > 0 { + fmt.Fprintf(dockerCli.Err(), "Ignoring unsupported options: %s\n\n", + strings.Join(unsupportedProperties, ", ")) } - return networks + + deprecatedProperties := loader.GetDeprecatedProperties(configDetails) + if len(deprecatedProperties) > 0 { + fmt.Fprintf(dockerCli.Err(), "Ignoring deprecated options:\n\n%s\n\n", + propertyWarnings(deprecatedProperties)) + } + + ctx := context.Background() + namespace := namespace{name: opts.namespace} + + networks := convertNetworks(namespace, config.Networks) + if err := createNetworks(ctx, dockerCli, namespace, networks); err != nil { + return err + } + services, err := convertServices(namespace, config) + if err != nil { + return err + } + return deployServices(ctx, dockerCli, services, namespace, opts.sendRegistryAuth) } -func updateNetworks( +func propertyWarnings(properties map[string]string) string { + var msgs []string + for name, description := range properties { + msgs = append(msgs, fmt.Sprintf("%s: %s", name, description)) + } + sort.Strings(msgs) + return strings.Join(msgs, "\n\n") +} + +func getConfigDetails(opts deployOptions) (composetypes.ConfigDetails, error) { + var details composetypes.ConfigDetails + var err error + + details.WorkingDir, err = os.Getwd() + if err != nil { + return details, err + } + + configFile, err := getConfigFile(opts.composefile) + if err != nil { + return details, err + } + // TODO: support multiple files + details.ConfigFiles = []composetypes.ConfigFile{*configFile} + return details, nil +} + +func getConfigFile(filename string) (*composetypes.ConfigFile, error) { + bytes, err := ioutil.ReadFile(filename) + if err != nil { + return nil, err + } + config, err := loader.ParseYAML(bytes) + if err != nil { + return nil, err + } + return &composetypes.ConfigFile{ + Filename: filename, + Config: config, + }, nil +} + +func convertNetworks( + namespace namespace, + networks map[string]composetypes.NetworkConfig, +) map[string]types.NetworkCreate { + if networks == nil { + networks = make(map[string]composetypes.NetworkConfig) + } + + // TODO: only add default network if it's used + networks["default"] = composetypes.NetworkConfig{} + + result := make(map[string]types.NetworkCreate) + + for internalName, network := range networks { + if network.External.Name != "" { + continue + } + + createOpts := types.NetworkCreate{ + Labels: getStackLabels(namespace.name, network.Labels), + Driver: network.Driver, + Options: network.DriverOpts, + } + + if network.Ipam.Driver != "" || len(network.Ipam.Config) > 0 { + createOpts.IPAM = &networktypes.IPAM{} + } + + if network.Ipam.Driver != "" { + createOpts.IPAM.Driver = network.Ipam.Driver + } + for _, ipamConfig := range network.Ipam.Config { + config := networktypes.IPAMConfig{ + Subnet: ipamConfig.Subnet, + } + createOpts.IPAM.Config = append(createOpts.IPAM.Config, config) + } + result[internalName] = createOpts + } + + return result +} + +func createNetworks( ctx context.Context, dockerCli *command.DockerCli, - networks []string, - namespace string, + namespace namespace, + networks map[string]types.NetworkCreate, ) error { client := dockerCli.Client() - existingNetworks, err := getNetworks(ctx, client, namespace) + existingNetworks, err := getNetworks(ctx, client, namespace.name) if err != nil { return err } @@ -101,47 +215,170 @@ func updateNetworks( existingNetworkMap[network.Name] = network } - createOpts := types.NetworkCreate{ - Labels: getStackLabels(namespace, nil), - Driver: defaultNetworkDriver, - } - - for _, internalName := range networks { - name := fmt.Sprintf("%s_%s", namespace, internalName) - + for internalName, createOpts := range networks { + name := namespace.scope(internalName) if _, exists := existingNetworkMap[name]; exists { continue } + + if createOpts.Driver == "" { + createOpts.Driver = defaultNetworkDriver + } + fmt.Fprintf(dockerCli.Out(), "Creating network %s\n", name) if _, err := client.NetworkCreate(ctx, name, createOpts); err != nil { return err } } + return nil } -func convertNetworks(networks []string, namespace string, name string) []swarm.NetworkAttachmentConfig { +func convertServiceNetworks( + networks map[string]*composetypes.ServiceNetworkConfig, + namespace namespace, + name string, +) []swarm.NetworkAttachmentConfig { + if len(networks) == 0 { + return []swarm.NetworkAttachmentConfig{ + { + Target: namespace.scope("default"), + Aliases: []string{name}, + }, + } + } + nets := []swarm.NetworkAttachmentConfig{} - for _, network := range networks { + for networkName, network := range networks { nets = append(nets, swarm.NetworkAttachmentConfig{ - Target: namespace + "_" + network, - Aliases: []string{name}, + Target: namespace.scope(networkName), + Aliases: append(network.Aliases, name), }) } return nets } +func convertVolumes( + serviceVolumes []string, + stackVolumes map[string]composetypes.VolumeConfig, + namespace namespace, +) ([]mount.Mount, error) { + var mounts []mount.Mount + + for _, volumeSpec := range serviceVolumes { + mount, err := convertVolumeToMount(volumeSpec, stackVolumes, namespace) + if err != nil { + return nil, err + } + mounts = append(mounts, mount) + } + return mounts, nil +} + +func convertVolumeToMount( + volumeSpec string, + stackVolumes map[string]composetypes.VolumeConfig, + namespace namespace, +) (mount.Mount, error) { + var source, target string + var mode []string + + // TODO: split Windows path mappings properly + parts := strings.SplitN(volumeSpec, ":", 3) + + switch len(parts) { + case 3: + source = parts[0] + target = parts[1] + mode = strings.Split(parts[2], ",") + case 2: + source = parts[0] + target = parts[1] + case 1: + target = parts[0] + default: + return mount.Mount{}, fmt.Errorf("invald volume: %s", volumeSpec) + } + + // TODO: catch Windows paths here + if strings.HasPrefix(source, "/") { + return mount.Mount{ + Type: mount.TypeBind, + Source: source, + Target: target, + ReadOnly: isReadOnly(mode), + BindOptions: getBindOptions(mode), + }, nil + } + + stackVolume, exists := stackVolumes[source] + if !exists { + return mount.Mount{}, fmt.Errorf("undefined volume: %s", source) + } + + var volumeOptions *mount.VolumeOptions + if stackVolume.External.Name != "" { + source = stackVolume.External.Name + } else { + volumeOptions = &mount.VolumeOptions{ + Labels: stackVolume.Labels, + NoCopy: isNoCopy(mode), + } + + if stackVolume.Driver != "" { + volumeOptions.DriverConfig = &mount.Driver{ + Name: stackVolume.Driver, + Options: stackVolume.DriverOpts, + } + } + source = namespace.scope(source) + } + return mount.Mount{ + Type: mount.TypeVolume, + Source: source, + Target: target, + ReadOnly: isReadOnly(mode), + VolumeOptions: volumeOptions, + }, nil +} + +func modeHas(mode []string, field string) bool { + for _, item := range mode { + if item == field { + return true + } + } + return false +} + +func isReadOnly(mode []string) bool { + return modeHas(mode, "ro") +} + +func isNoCopy(mode []string) bool { + return modeHas(mode, "nocopy") +} + +func getBindOptions(mode []string) *mount.BindOptions { + for _, item := range mode { + if strings.Contains(item, "private") || strings.Contains(item, "shared") || strings.Contains(item, "slave") { + return &mount.BindOptions{Propagation: mount.Propagation(item)} + } + } + return nil +} + func deployServices( ctx context.Context, dockerCli *command.DockerCli, - services map[string]bundlefile.Service, - namespace string, + services map[string]swarm.ServiceSpec, + namespace namespace, sendAuth bool, ) error { apiClient := dockerCli.Client() out := dockerCli.Out() - existingServices, err := getServices(ctx, apiClient, namespace) + existingServices, err := getServices(ctx, apiClient, namespace.name) if err != nil { return err } @@ -151,47 +388,8 @@ func deployServices( existingServiceMap[service.Spec.Name] = service } - for internalName, service := range services { - name := fmt.Sprintf("%s_%s", namespace, internalName) - - var ports []swarm.PortConfig - for _, portSpec := range service.Ports { - ports = append(ports, swarm.PortConfig{ - Protocol: swarm.PortConfigProtocol(portSpec.Protocol), - TargetPort: portSpec.Port, - }) - } - - serviceSpec := swarm.ServiceSpec{ - Annotations: swarm.Annotations{ - Name: name, - Labels: getStackLabels(namespace, service.Labels), - }, - TaskTemplate: swarm.TaskSpec{ - ContainerSpec: swarm.ContainerSpec{ - Image: service.Image, - Command: service.Command, - Args: service.Args, - Env: service.Env, - // Service Labels will not be copied to Containers - // automatically during the deployment so we apply - // it here. - Labels: getStackLabels(namespace, nil), - }, - }, - EndpointSpec: &swarm.EndpointSpec{ - Ports: ports, - }, - Networks: convertNetworks(service.Networks, namespace, internalName), - } - - cspec := &serviceSpec.TaskTemplate.ContainerSpec - if service.WorkingDir != nil { - cspec.Dir = *service.WorkingDir - } - if service.User != nil { - cspec.User = *service.User - } + for internalName, serviceSpec := range services { + name := namespace.scope(internalName) encodedAuth := "" if sendAuth { @@ -234,3 +432,202 @@ func deployServices( return nil } + +func convertServices( + namespace namespace, + config *composetypes.Config, +) (map[string]swarm.ServiceSpec, error) { + result := make(map[string]swarm.ServiceSpec) + + services := config.Services + volumes := config.Volumes + + for _, service := range services { + serviceSpec, err := convertService(namespace, service, volumes) + if err != nil { + return nil, err + } + result[service.Name] = serviceSpec + } + + return result, nil +} + +func convertService( + namespace namespace, + service composetypes.ServiceConfig, + volumes map[string]composetypes.VolumeConfig, +) (swarm.ServiceSpec, error) { + name := namespace.scope(service.Name) + + endpoint, err := convertEndpointSpec(service.Ports) + if err != nil { + return swarm.ServiceSpec{}, err + } + + mode, err := convertDeployMode(service.Deploy.Mode, service.Deploy.Replicas) + if err != nil { + return swarm.ServiceSpec{}, err + } + + mounts, err := convertVolumes(service.Volumes, volumes, namespace) + if err != nil { + // TODO: better error message (include service name) + return swarm.ServiceSpec{}, err + } + + resources, err := convertResources(service.Deploy.Resources) + if err != nil { + return swarm.ServiceSpec{}, err + } + + restartPolicy, err := convertRestartPolicy( + service.Restart, service.Deploy.RestartPolicy) + if err != nil { + return swarm.ServiceSpec{}, err + } + + serviceSpec := swarm.ServiceSpec{ + Annotations: swarm.Annotations{ + Name: name, + Labels: getStackLabels(namespace.name, service.Deploy.Labels), + }, + TaskTemplate: swarm.TaskSpec{ + ContainerSpec: swarm.ContainerSpec{ + Image: service.Image, + Command: service.Entrypoint, + Args: service.Command, + Hostname: service.Hostname, + Env: convertEnvironment(service.Environment), + Labels: getStackLabels(namespace.name, service.Labels), + Dir: service.WorkingDir, + User: service.User, + Mounts: mounts, + StopGracePeriod: service.StopGracePeriod, + }, + Resources: resources, + RestartPolicy: restartPolicy, + Placement: &swarm.Placement{ + Constraints: service.Deploy.Placement.Constraints, + }, + }, + EndpointSpec: endpoint, + Mode: mode, + Networks: convertServiceNetworks(service.Networks, namespace, service.Name), + UpdateConfig: convertUpdateConfig(service.Deploy.UpdateConfig), + } + + return serviceSpec, nil +} + +func convertRestartPolicy(restart string, source *composetypes.RestartPolicy) (*swarm.RestartPolicy, error) { + // TODO: log if restart is being ignored + if source == nil { + policy, err := runconfigopts.ParseRestartPolicy(restart) + if err != nil { + return nil, err + } + // TODO: is this an accurate convertion? + switch { + case policy.IsNone(): + return nil, nil + case policy.IsAlways(), policy.IsUnlessStopped(): + return &swarm.RestartPolicy{ + Condition: swarm.RestartPolicyConditionAny, + }, nil + case policy.IsOnFailure(): + attempts := uint64(policy.MaximumRetryCount) + return &swarm.RestartPolicy{ + Condition: swarm.RestartPolicyConditionOnFailure, + MaxAttempts: &attempts, + }, nil + } + } + return &swarm.RestartPolicy{ + Condition: swarm.RestartPolicyCondition(source.Condition), + Delay: source.Delay, + MaxAttempts: source.MaxAttempts, + Window: source.Window, + }, nil +} + +func convertUpdateConfig(source *composetypes.UpdateConfig) *swarm.UpdateConfig { + if source == nil { + return nil + } + return &swarm.UpdateConfig{ + Parallelism: source.Parallelism, + Delay: source.Delay, + FailureAction: source.FailureAction, + Monitor: source.Monitor, + MaxFailureRatio: source.MaxFailureRatio, + } +} + +func convertResources(source composetypes.Resources) (*swarm.ResourceRequirements, error) { + resources := &swarm.ResourceRequirements{} + if source.Limits != nil { + cpus, err := opts.ParseCPUs(source.Limits.NanoCPUs) + if err != nil { + return nil, err + } + resources.Limits = &swarm.Resources{ + NanoCPUs: cpus, + MemoryBytes: int64(source.Limits.MemoryBytes), + } + } + if source.Reservations != nil { + cpus, err := opts.ParseCPUs(source.Reservations.NanoCPUs) + if err != nil { + return nil, err + } + resources.Reservations = &swarm.Resources{ + NanoCPUs: cpus, + MemoryBytes: int64(source.Reservations.MemoryBytes), + } + } + return resources, nil +} + +func convertEndpointSpec(source []string) (*swarm.EndpointSpec, error) { + portConfigs := []swarm.PortConfig{} + ports, portBindings, err := nat.ParsePortSpecs(source) + if err != nil { + return nil, err + } + + for port := range ports { + portConfigs = append( + portConfigs, + servicecmd.ConvertPortToPortConfig(port, portBindings)...) + } + + return &swarm.EndpointSpec{Ports: portConfigs}, nil +} + +func convertEnvironment(source map[string]string) []string { + var output []string + + for name, value := range source { + output = append(output, fmt.Sprintf("%s=%s", name, value)) + } + + return output +} + +func convertDeployMode(mode string, replicas *uint64) (swarm.ServiceMode, error) { + serviceMode := swarm.ServiceMode{} + + switch mode { + case "global": + if replicas != nil { + return serviceMode, fmt.Errorf("replicas can only be used with replicated mode") + } + serviceMode.Global = &swarm.GlobalService{} + case "replicated", "": + serviceMode.Replicated = &swarm.ReplicatedService{Replicas: replicas} + default: + return serviceMode, fmt.Errorf("Unknown mode: %s", mode) + } + return serviceMode, nil +} diff --git a/components/engine/cli/command/stack/deploy_bundlefile.go b/components/engine/cli/command/stack/deploy_bundlefile.go new file mode 100644 index 0000000000..5ec8a2a05b --- /dev/null +++ b/components/engine/cli/command/stack/deploy_bundlefile.go @@ -0,0 +1,80 @@ +package stack + +import ( + "golang.org/x/net/context" + + "github.com/docker/docker/api/types" + "github.com/docker/docker/api/types/swarm" + "github.com/docker/docker/cli/command" +) + +func deployBundle(dockerCli *command.DockerCli, opts deployOptions) error { + bundle, err := loadBundlefile(dockerCli.Err(), opts.namespace, opts.bundlefile) + if err != nil { + return err + } + + namespace := namespace{name: opts.namespace} + + networks := make(map[string]types.NetworkCreate) + for _, service := range bundle.Services { + for _, networkName := range service.Networks { + networks[networkName] = types.NetworkCreate{ + Labels: getStackLabels(namespace.name, nil), + } + } + } + + services := make(map[string]swarm.ServiceSpec) + for internalName, service := range bundle.Services { + name := namespace.scope(internalName) + + var ports []swarm.PortConfig + for _, portSpec := range service.Ports { + ports = append(ports, swarm.PortConfig{ + Protocol: swarm.PortConfigProtocol(portSpec.Protocol), + TargetPort: portSpec.Port, + }) + } + + nets := []swarm.NetworkAttachmentConfig{} + for _, networkName := range service.Networks { + nets = append(nets, swarm.NetworkAttachmentConfig{ + Target: namespace.scope(networkName), + Aliases: []string{networkName}, + }) + } + + serviceSpec := swarm.ServiceSpec{ + Annotations: swarm.Annotations{ + Name: name, + Labels: getStackLabels(namespace.name, service.Labels), + }, + TaskTemplate: swarm.TaskSpec{ + ContainerSpec: swarm.ContainerSpec{ + Image: service.Image, + Command: service.Command, + Args: service.Args, + Env: service.Env, + // Service Labels will not be copied to Containers + // automatically during the deployment so we apply + // it here. + Labels: getStackLabels(namespace.name, nil), + }, + }, + EndpointSpec: &swarm.EndpointSpec{ + Ports: ports, + }, + Networks: nets, + } + + services[internalName] = serviceSpec + } + + ctx := context.Background() + + if err := createNetworks(ctx, dockerCli, namespace, networks); err != nil { + return err + } + return deployServices(ctx, dockerCli, services, namespace, opts.sendRegistryAuth) +} diff --git a/components/engine/cli/command/stack/opts.go b/components/engine/cli/command/stack/opts.go index 5f2d8b5d0a..c2cc0d1e70 100644 --- a/components/engine/cli/command/stack/opts.go +++ b/components/engine/cli/command/stack/opts.go @@ -9,11 +9,12 @@ import ( "github.com/spf13/pflag" ) +func addComposefileFlag(opt *string, flags *pflag.FlagSet) { + flags.StringVar(opt, "compose-file", "", "Path to a Compose file") +} + func addBundlefileFlag(opt *string, flags *pflag.FlagSet) { - flags.StringVar( - opt, - "file", "", - "Path to a Distributed Application Bundle file (Default: STACK.dab)") + flags.StringVar(opt, "bundle-file", "", "Path to a Distributed Application Bundle file") } func addRegistryAuthFlag(opt *bool, flags *pflag.FlagSet) { diff --git a/components/engine/daemon/cluster/executor/container/container.go b/components/engine/daemon/cluster/executor/container/container.go index 7a93ecad01..6cc21ab3bb 100644 --- a/components/engine/daemon/cluster/executor/container/container.go +++ b/components/engine/daemon/cluster/executor/container/container.go @@ -141,8 +141,8 @@ func (c *containerConfig) config() *enginecontainer.Config { Labels: c.labels(), Tty: c.spec().TTY, User: c.spec().User, - Hostname: c.spec().Hostname, Env: c.spec().Env, + Hostname: c.spec().Hostname, WorkingDir: c.spec().Dir, Image: c.image(), Volumes: c.volumes(), diff --git a/components/engine/integration-cli/docker_cli_stack_test.go b/components/engine/integration-cli/docker_cli_stack_test.go index db4fdfc1b4..1ff791bc10 100644 --- a/components/engine/integration-cli/docker_cli_stack_test.go +++ b/components/engine/integration-cli/docker_cli_stack_test.go @@ -41,6 +41,30 @@ func (s *DockerSwarmSuite) TestStackServices(c *check.C) { c.Assert(out, check.Equals, "Nothing found in stack: UNKNOWN_STACK\n") } +func (s *DockerSwarmSuite) TestStackDeployComposeFile(c *check.C) { + testRequires(c, ExperimentalDaemon) + d := s.AddDaemon(c, true, true) + + testStackName := "testdeploy" + stackArgs := []string{ + "stack", "deploy", + "--compose-file", "fixtures/deploy/default.yaml", + testStackName, + } + out, err := d.Cmd(stackArgs...) + c.Assert(err, checker.IsNil, check.Commentf(out)) + + out, err = d.Cmd([]string{"stack", "ls"}...) + c.Assert(err, checker.IsNil) + c.Assert(out, check.Equals, "NAME SERVICES\n"+"testdeploy 2\n") + + out, err = d.Cmd([]string{"stack", "rm", testStackName}...) + c.Assert(err, checker.IsNil) + out, err = d.Cmd([]string{"stack", "ls"}...) + c.Assert(err, checker.IsNil) + c.Assert(out, check.Equals, "NAME SERVICES\n") +} + // testDAB is the DAB JSON used for testing. // TODO: Use template/text and substitute "Image" with the result of // `docker inspect --format '{{index .RepoDigests 0}}' busybox:latest` @@ -59,7 +83,7 @@ const testDAB = `{ } }` -func (s *DockerSwarmSuite) TestStackWithDAB(c *check.C) { +func (s *DockerSwarmSuite) TestStackDeployWithDAB(c *check.C) { testRequires(c, ExperimentalDaemon) // setup testStackName := "test" @@ -69,7 +93,11 @@ func (s *DockerSwarmSuite) TestStackWithDAB(c *check.C) { c.Assert(err, checker.IsNil) d := s.AddDaemon(c, true, true) // deploy - stackArgs := []string{"stack", "deploy", testStackName} + stackArgs := []string{ + "stack", "deploy", + "--bundle-file", testDABFileName, + testStackName, + } out, err := d.Cmd(stackArgs...) c.Assert(err, checker.IsNil) c.Assert(out, checker.Contains, "Loading bundle from test.dab\n") @@ -92,21 +120,3 @@ func (s *DockerSwarmSuite) TestStackWithDAB(c *check.C) { c.Assert(err, checker.IsNil) c.Assert(out, check.Equals, "NAME SERVICES\n") } - -func (s *DockerSwarmSuite) TestStackWithDABExtension(c *check.C) { - testRequires(c, ExperimentalDaemon) - // setup - testStackName := "test.dab" - testDABFileName := testStackName - defer os.RemoveAll(testDABFileName) - err := ioutil.WriteFile(testDABFileName, []byte(testDAB), 0444) - c.Assert(err, checker.IsNil) - d := s.AddDaemon(c, true, true) - // deploy - stackArgs := []string{"stack", "deploy", testStackName} - out, err := d.Cmd(stackArgs...) - c.Assert(err, checker.IsNil) - c.Assert(out, checker.Contains, "Loading bundle from test.dab\n") - c.Assert(out, checker.Contains, "Creating service test_srv1\n") - c.Assert(out, checker.Contains, "Creating service test_srv2\n") -} diff --git a/components/engine/integration-cli/fixtures/deploy/default.yaml b/components/engine/integration-cli/fixtures/deploy/default.yaml new file mode 100644 index 0000000000..f30c04f8f1 --- /dev/null +++ b/components/engine/integration-cli/fixtures/deploy/default.yaml @@ -0,0 +1,9 @@ + +version: "3" +services: + web: + image: busybox@sha256:e4f93f6ed15a0cdd342f5aae387886fba0ab98af0a102da6276eaf24d6e6ade0 + command: top + db: + image: busybox@sha256:e4f93f6ed15a0cdd342f5aae387886fba0ab98af0a102da6276eaf24d6e6ade0 + command: "tail -f /dev/null" diff --git a/components/engine/opts/opts.go b/components/engine/opts/opts.go index 0ac391add8..ae851537ec 100644 --- a/components/engine/opts/opts.go +++ b/components/engine/opts/opts.go @@ -331,16 +331,9 @@ func (c *NanoCPUs) String() string { // Set sets the value of the NanoCPU by passing a string func (c *NanoCPUs) Set(value string) error { - cpu, ok := new(big.Rat).SetString(value) - if !ok { - return fmt.Errorf("Failed to parse %v as a rational number", value) - } - nano := cpu.Mul(cpu, big.NewRat(1e9, 1)) - if !nano.IsInt() { - return fmt.Errorf("value is too precise") - } - *c = NanoCPUs(nano.Num().Int64()) - return nil + cpus, err := ParseCPUs(value) + *c = NanoCPUs(cpus) + return err } // Type returns the type @@ -352,3 +345,16 @@ func (c *NanoCPUs) Type() string { func (c *NanoCPUs) Value() int64 { return int64(*c) } + +// ParseCPUs takes a string ratio and returns an integer value of nano cpus +func ParseCPUs(value string) (int64, error) { + cpu, ok := new(big.Rat).SetString(value) + if !ok { + return 0, fmt.Errorf("failed to parse %v as a rational number", value) + } + nano := cpu.Mul(cpu, big.NewRat(1e9, 1)) + if !nano.IsInt() { + return 0, fmt.Errorf("value is too precise") + } + return nano.Num().Int64(), nil +} diff --git a/components/engine/vendor.conf b/components/engine/vendor.conf index f0a4edba85..ace73b34de 100644 --- a/components/engine/vendor.conf +++ b/components/engine/vendor.conf @@ -130,3 +130,11 @@ github.com/flynn-archive/go-shlex 3f9db97f856818214da2e1057f8ad84803971cff # metrics github.com/docker/go-metrics 86138d05f285fd9737a99bee2d9be30866b59d72 + +# composefile +github.com/aanand/compose-file 480a79677acccb83b52c41161c22eaf4358460cc +github.com/mitchellh/mapstructure f3009df150dadf309fdee4a54ed65c124afad715 +github.com/xeipuuv/gojsonpointer e0fe6f68307607d540ed8eac07a342c33fa1b54a +github.com/xeipuuv/gojsonreference e02fc20de94c78484cd5ffb007f8af96be030a45 +github.com/xeipuuv/gojsonschema 93e72a773fade158921402d6a24c819b48aba29d +gopkg.in/yaml.v2 a83829b6f1293c91addabc89d0571c246397bbf4 diff --git a/components/engine/vendor/github.com/aanand/compose-file/LICENSE b/components/engine/vendor/github.com/aanand/compose-file/LICENSE new file mode 100644 index 0000000000..0ea3ff81e3 --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/LICENSE @@ -0,0 +1,191 @@ + + Apache License + Version 2.0, January 2004 + https://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + Copyright 2016 Docker, Inc. + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + https://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/components/engine/vendor/github.com/aanand/compose-file/interpolation/interpolation.go b/components/engine/vendor/github.com/aanand/compose-file/interpolation/interpolation.go new file mode 100644 index 0000000000..4f1b61da7b --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/interpolation/interpolation.go @@ -0,0 +1,89 @@ +package interpolation + +import ( + "fmt" + + "github.com/aanand/compose-file/template" + "github.com/aanand/compose-file/types" +) + +func Interpolate(config types.Dict, section string, mapping template.Mapping) (types.Dict, error) { + out := types.Dict{} + + for name, item := range config { + if item == nil { + out[name] = nil + continue + } + interpolatedItem, err := interpolateSectionItem(name, item.(types.Dict), section, mapping) + if err != nil { + return nil, err + } + out[name] = interpolatedItem + } + + return out, nil +} + +func interpolateSectionItem( + name string, + item types.Dict, + section string, + mapping template.Mapping, +) (types.Dict, error) { + + out := types.Dict{} + + for key, value := range item { + interpolatedValue, err := recursiveInterpolate(value, mapping) + if err != nil { + return nil, fmt.Errorf( + "Invalid interpolation format for %#v option in %s %#v: %#v", + key, section, name, err.Template, + ) + } + out[key] = interpolatedValue + } + + return out, nil + +} + +func recursiveInterpolate( + value interface{}, + mapping template.Mapping, +) (interface{}, *template.InvalidTemplateError) { + + switch value := value.(type) { + + case string: + return template.Substitute(value, mapping) + + case types.Dict: + out := types.Dict{} + for key, elem := range value { + interpolatedElem, err := recursiveInterpolate(elem, mapping) + if err != nil { + return nil, err + } + out[key] = interpolatedElem + } + return out, nil + + case []interface{}: + out := make([]interface{}, len(value)) + for i, elem := range value { + interpolatedElem, err := recursiveInterpolate(elem, mapping) + if err != nil { + return nil, err + } + out[i] = interpolatedElem + } + return out, nil + + default: + return value, nil + + } + +} diff --git a/components/engine/vendor/github.com/aanand/compose-file/loader/loader.go b/components/engine/vendor/github.com/aanand/compose-file/loader/loader.go new file mode 100644 index 0000000000..fe8ebba728 --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/loader/loader.go @@ -0,0 +1,597 @@ +package loader + +import ( + "fmt" + "os" + "path" + "reflect" + "regexp" + "sort" + "strings" + + "github.com/aanand/compose-file/interpolation" + "github.com/aanand/compose-file/schema" + "github.com/aanand/compose-file/types" + "github.com/docker/docker/runconfig/opts" + units "github.com/docker/go-units" + shellwords "github.com/mattn/go-shellwords" + "github.com/mitchellh/mapstructure" + yaml "gopkg.in/yaml.v2" +) + +var ( + fieldNameRegexp = regexp.MustCompile("[A-Z][a-z0-9]+") +) + +// ParseYAML reads the bytes from a file, parses the bytes into a mapping +// structure, and returns it. +func ParseYAML(source []byte) (types.Dict, error) { + var cfg interface{} + if err := yaml.Unmarshal(source, &cfg); err != nil { + return nil, err + } + cfgMap, ok := cfg.(map[interface{}]interface{}) + if !ok { + return nil, fmt.Errorf("Top-level object must be a mapping") + } + converted, err := convertToStringKeysRecursive(cfgMap, "") + if err != nil { + return nil, err + } + return converted.(types.Dict), nil +} + +// Load reads a ConfigDetails and returns a fully loaded configuration +func Load(configDetails types.ConfigDetails) (*types.Config, error) { + if len(configDetails.ConfigFiles) < 1 { + return nil, fmt.Errorf("No files specified") + } + if len(configDetails.ConfigFiles) > 1 { + return nil, fmt.Errorf("Multiple files are not yet supported") + } + + configDict := getConfigDict(configDetails) + + if services, ok := configDict["services"]; ok { + if servicesDict, ok := services.(types.Dict); ok { + forbidden := getProperties(servicesDict, types.ForbiddenProperties) + + if len(forbidden) > 0 { + return nil, &ForbiddenPropertiesError{Properties: forbidden} + } + } + } + + if err := schema.Validate(configDict); err != nil { + return nil, err + } + + cfg := types.Config{} + version := configDict["version"].(string) + if version != "3" { + return nil, fmt.Errorf("Unsupported version: %#v. The only supported version is 3", version) + } + + if services, ok := configDict["services"]; ok { + servicesConfig, err := interpolation.Interpolate(services.(types.Dict), "service", os.LookupEnv) + if err != nil { + return nil, err + } + + servicesList, err := loadServices(servicesConfig, configDetails.WorkingDir) + if err != nil { + return nil, err + } + + cfg.Services = servicesList + } + + if networks, ok := configDict["networks"]; ok { + networksConfig, err := interpolation.Interpolate(networks.(types.Dict), "network", os.LookupEnv) + if err != nil { + return nil, err + } + + networksMapping, err := loadNetworks(networksConfig) + if err != nil { + return nil, err + } + + cfg.Networks = networksMapping + } + + if volumes, ok := configDict["volumes"]; ok { + volumesConfig, err := interpolation.Interpolate(volumes.(types.Dict), "volume", os.LookupEnv) + if err != nil { + return nil, err + } + + volumesMapping, err := loadVolumes(volumesConfig) + if err != nil { + return nil, err + } + + cfg.Volumes = volumesMapping + } + + return &cfg, nil +} + +func GetUnsupportedProperties(configDetails types.ConfigDetails) []string { + unsupported := map[string]bool{} + + for _, service := range getServices(getConfigDict(configDetails)) { + serviceDict := service.(types.Dict) + for _, property := range types.UnsupportedProperties { + if _, isSet := serviceDict[property]; isSet { + unsupported[property] = true + } + } + } + + return sortedKeys(unsupported) +} + +func sortedKeys(set map[string]bool) []string { + var keys []string + for key, _ := range set { + keys = append(keys, key) + } + sort.Strings(keys) + return keys +} + +func GetDeprecatedProperties(configDetails types.ConfigDetails) map[string]string { + return getProperties(getServices(getConfigDict(configDetails)), types.DeprecatedProperties) +} + +func getProperties(services types.Dict, propertyMap map[string]string) map[string]string { + output := map[string]string{} + + for _, service := range services { + if serviceDict, ok := service.(types.Dict); ok { + for property, description := range propertyMap { + if _, isSet := serviceDict[property]; isSet { + output[property] = description + } + } + } + } + + return output +} + +type ForbiddenPropertiesError struct { + Properties map[string]string +} + +func (e *ForbiddenPropertiesError) Error() string { + return "Configuration contains forbidden properties" +} + +// TODO: resolve multiple files into a single config +func getConfigDict(configDetails types.ConfigDetails) types.Dict { + return configDetails.ConfigFiles[0].Config +} + +func getServices(configDict types.Dict) types.Dict { + if services, ok := configDict["services"]; ok { + if servicesDict, ok := services.(types.Dict); ok { + return servicesDict + } + } + + return types.Dict{} +} + +func transform(source map[string]interface{}, target interface{}) error { + data := mapstructure.Metadata{} + config := &mapstructure.DecoderConfig{ + DecodeHook: mapstructure.ComposeDecodeHookFunc( + transformHook, + mapstructure.StringToTimeDurationHookFunc()), + Result: target, + Metadata: &data, + } + decoder, err := mapstructure.NewDecoder(config) + if err != nil { + return err + } + err = decoder.Decode(source) + // TODO: log unused keys + return err +} + +func transformHook( + source reflect.Type, + target reflect.Type, + data interface{}, +) (interface{}, error) { + switch target { + case reflect.TypeOf(types.External{}): + return transformExternal(source, target, data) + case reflect.TypeOf(make(map[string]string, 0)): + return transformMapStringString(source, target, data) + case reflect.TypeOf(types.UlimitsConfig{}): + return transformUlimits(source, target, data) + case reflect.TypeOf(types.UnitBytes(0)): + return loadSize(data) + } + switch target.Kind() { + case reflect.Struct: + return transformStruct(source, target, data) + } + return data, nil +} + +// keys needs to be converted to strings for jsonschema +// TODO: don't use types.Dict +func convertToStringKeysRecursive(value interface{}, keyPrefix string) (interface{}, error) { + if mapping, ok := value.(map[interface{}]interface{}); ok { + dict := make(types.Dict) + for key, entry := range mapping { + str, ok := key.(string) + if !ok { + var location string + if keyPrefix == "" { + location = "at top level" + } else { + location = fmt.Sprintf("in %s", keyPrefix) + } + return nil, fmt.Errorf("Non-string key %s: %#v", location, key) + } + var newKeyPrefix string + if keyPrefix == "" { + newKeyPrefix = str + } else { + newKeyPrefix = fmt.Sprintf("%s.%s", keyPrefix, str) + } + convertedEntry, err := convertToStringKeysRecursive(entry, newKeyPrefix) + if err != nil { + return nil, err + } + dict[str] = convertedEntry + } + return dict, nil + } + if list, ok := value.([]interface{}); ok { + var convertedList []interface{} + for index, entry := range list { + newKeyPrefix := fmt.Sprintf("%s[%d]", keyPrefix, index) + convertedEntry, err := convertToStringKeysRecursive(entry, newKeyPrefix) + if err != nil { + return nil, err + } + convertedList = append(convertedList, convertedEntry) + } + return convertedList, nil + } + return value, nil +} + +func loadServices(servicesDict types.Dict, workingDir string) ([]types.ServiceConfig, error) { + var services []types.ServiceConfig + + for name, serviceDef := range servicesDict { + serviceConfig, err := loadService(name, serviceDef.(types.Dict), workingDir) + if err != nil { + return nil, err + } + services = append(services, *serviceConfig) + } + + return services, nil +} + +func loadService(name string, serviceDict types.Dict, workingDir string) (*types.ServiceConfig, error) { + serviceConfig := &types.ServiceConfig{} + if err := transform(serviceDict, serviceConfig); err != nil { + return nil, err + } + serviceConfig.Name = name + + if err := resolveEnvironment(serviceConfig, serviceDict, workingDir); err != nil { + return nil, err + } + + if err := resolveVolumePaths(serviceConfig.Volumes, workingDir); err != nil { + return nil, err + } + + return serviceConfig, nil +} + +func resolveEnvironment(serviceConfig *types.ServiceConfig, serviceDict types.Dict, workingDir string) error { + environment := make(map[string]string) + + if envFileVal, ok := serviceDict["env_file"]; ok { + envFiles := loadStringOrListOfStrings(envFileVal) + + var envVars []string + + for _, file := range envFiles { + filePath := path.Join(workingDir, file) + fileVars, err := opts.ParseEnvFile(filePath) + if err != nil { + return err + } + envVars = append(envVars, fileVars...) + } + + for k, v := range opts.ConvertKVStringsToMap(envVars) { + environment[k] = v + } + } + + for k, v := range serviceConfig.Environment { + environment[k] = v + } + + serviceConfig.Environment = environment + + return nil +} + +func resolveVolumePaths(volumes []string, workingDir string) error { + for i, mapping := range volumes { + parts := strings.SplitN(mapping, ":", 2) + if len(parts) == 1 { + continue + } + + if strings.HasPrefix(parts[0], ".") { + parts[0] = path.Join(workingDir, parts[0]) + } + parts[0] = expandUser(parts[0]) + + volumes[i] = strings.Join(parts, ":") + } + + return nil +} + +// TODO: make this more robust +func expandUser(path string) string { + if strings.HasPrefix(path, "~") { + return strings.Replace(path, "~", os.Getenv("HOME"), 1) + } + return path +} + +func transformUlimits( + source reflect.Type, + target reflect.Type, + data interface{}, +) (interface{}, error) { + switch value := data.(type) { + case int: + return types.UlimitsConfig{Single: value}, nil + case types.Dict: + ulimit := types.UlimitsConfig{} + ulimit.Soft = value["soft"].(int) + ulimit.Hard = value["hard"].(int) + return ulimit, nil + default: + return data, fmt.Errorf("invalid type %T for ulimits", value) + } +} + +func loadNetworks(source types.Dict) (map[string]types.NetworkConfig, error) { + networks := make(map[string]types.NetworkConfig) + err := transform(source, &networks) + if err != nil { + return networks, err + } + for name, network := range networks { + if network.External.External && network.External.Name == "" { + network.External.Name = name + networks[name] = network + } + } + return networks, nil +} + +func loadVolumes(source types.Dict) (map[string]types.VolumeConfig, error) { + volumes := make(map[string]types.VolumeConfig) + err := transform(source, &volumes) + if err != nil { + return volumes, err + } + for name, volume := range volumes { + if volume.External.External && volume.External.Name == "" { + volume.External.Name = name + volumes[name] = volume + } + } + return volumes, nil +} + +func transformStruct( + source reflect.Type, + target reflect.Type, + data interface{}, +) (interface{}, error) { + structValue, ok := data.(map[string]interface{}) + if !ok { + // FIXME: this is necessary because of convertToStringKeysRecursive + structValue, ok = data.(types.Dict) + if !ok { + panic(fmt.Sprintf( + "transformStruct called with non-map type: %T, %s", data, data)) + } + } + + var err error + for i := 0; i < target.NumField(); i++ { + field := target.Field(i) + fieldTag := field.Tag.Get("compose") + + yamlName := toYAMLName(field.Name) + value, ok := structValue[yamlName] + if !ok { + continue + } + + structValue[yamlName], err = convertField( + fieldTag, reflect.TypeOf(value), field.Type, value) + if err != nil { + return nil, fmt.Errorf("field %s: %s", yamlName, err.Error()) + } + } + return structValue, nil +} + +func transformMapStringString( + source reflect.Type, + target reflect.Type, + data interface{}, +) (interface{}, error) { + switch value := data.(type) { + case map[string]interface{}: + return toMapStringString(value), nil + case types.Dict: + return toMapStringString(value), nil + case map[string]string: + return value, nil + default: + return data, fmt.Errorf("invalid type %T for map[string]string", value) + } +} + +func convertField( + fieldTag string, + source reflect.Type, + target reflect.Type, + data interface{}, +) (interface{}, error) { + switch fieldTag { + case "": + return data, nil + case "list_or_dict_equals": + return loadMappingOrList(data, "="), nil + case "list_or_dict_colon": + return loadMappingOrList(data, ":"), nil + case "list_or_struct_map": + return loadListOrStructMap(data, target) + case "string_or_list": + return loadStringOrListOfStrings(data), nil + case "list_of_strings_or_numbers": + return loadListOfStringsOrNumbers(data), nil + case "shell_command": + return loadShellCommand(data) + case "size": + return loadSize(data) + case "-": + return nil, nil + } + return data, nil +} + +func transformExternal( + source reflect.Type, + target reflect.Type, + data interface{}, +) (interface{}, error) { + switch value := data.(type) { + case bool: + return map[string]interface{}{"external": value}, nil + case types.Dict: + return map[string]interface{}{"external": true, "name": value["name"]}, nil + case map[string]interface{}: + return map[string]interface{}{"external": true, "name": value["name"]}, nil + default: + return data, fmt.Errorf("invalid type %T for external", value) + } +} + +func toYAMLName(name string) string { + nameParts := fieldNameRegexp.FindAllString(name, -1) + for i, p := range nameParts { + nameParts[i] = strings.ToLower(p) + } + return strings.Join(nameParts, "_") +} + +func loadListOrStructMap(value interface{}, target reflect.Type) (interface{}, error) { + mapValue := reflect.MakeMap(target) + + if list, ok := value.([]interface{}); ok { + for _, name := range list { + mapValue.SetMapIndex(reflect.ValueOf(name), reflect.ValueOf(nil)) + } + return mapValue.Interface(), nil + } + + return value, nil +} + +func loadListOfStringsOrNumbers(value interface{}) []string { + list := value.([]interface{}) + result := make([]string, len(list)) + for i, item := range list { + result[i] = fmt.Sprint(item) + } + return result +} + +func loadStringOrListOfStrings(value interface{}) []string { + if list, ok := value.([]interface{}); ok { + result := make([]string, len(list)) + for i, item := range list { + result[i] = fmt.Sprint(item) + } + return result + } + return []string{value.(string)} +} + +func loadMappingOrList(mappingOrList interface{}, sep string) map[string]string { + if mapping, ok := mappingOrList.(types.Dict); ok { + return toMapStringString(mapping) + } + if list, ok := mappingOrList.([]interface{}); ok { + result := make(map[string]string) + for _, value := range list { + parts := strings.SplitN(value.(string), sep, 2) + if len(parts) == 1 { + result[parts[0]] = "" + } else { + result[parts[0]] = parts[1] + } + } + return result + } + panic(fmt.Errorf("expected a map or a slice, got: %#v", mappingOrList)) +} + +func loadShellCommand(value interface{}) (interface{}, error) { + if str, ok := value.(string); ok { + return shellwords.Parse(str) + } + return value, nil +} + +func loadSize(value interface{}) (int64, error) { + switch value := value.(type) { + case int: + return int64(value), nil + case string: + return units.RAMInBytes(value) + } + panic(fmt.Errorf("invalid type for size %T", value)) +} + +func toMapStringString(value map[string]interface{}) map[string]string { + output := make(map[string]string) + for key, value := range value { + output[key] = toString(value) + } + return output +} + +func toString(value interface{}) string { + if value == nil { + return "" + } + return fmt.Sprint(value) +} diff --git a/components/engine/vendor/github.com/aanand/compose-file/schema/bindata.go b/components/engine/vendor/github.com/aanand/compose-file/schema/bindata.go new file mode 100644 index 0000000000..a059c23f70 --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/schema/bindata.go @@ -0,0 +1,237 @@ +// Code generated by go-bindata. +// sources: +// data/config_schema_v3.json +// DO NOT EDIT! + +package schema + +import ( + "bytes" + "compress/gzip" + "fmt" + "io" + "io/ioutil" + "os" + "path/filepath" + "strings" + "time" +) + +func bindataRead(data []byte, name string) ([]byte, error) { + gz, err := gzip.NewReader(bytes.NewBuffer(data)) + if err != nil { + return nil, fmt.Errorf("Read %q: %v", name, err) + } + + var buf bytes.Buffer + _, err = io.Copy(&buf, gz) + clErr := gz.Close() + + if err != nil { + return nil, fmt.Errorf("Read %q: %v", name, err) + } + if clErr != nil { + return nil, err + } + + return buf.Bytes(), nil +} + +type asset struct { + bytes []byte + info os.FileInfo +} + +type bindataFileInfo struct { + name string + size int64 + mode os.FileMode + modTime time.Time +} + +func (fi bindataFileInfo) Name() string { + return fi.name +} +func (fi bindataFileInfo) Size() int64 { + return fi.size +} +func (fi bindataFileInfo) Mode() os.FileMode { + return fi.mode +} +func (fi bindataFileInfo) ModTime() time.Time { + return fi.modTime +} +func (fi bindataFileInfo) IsDir() bool { + return false +} +func (fi bindataFileInfo) Sys() interface{} { + return nil +} + +var _dataConfig_schema_v3Json = 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+ +func dataConfig_schema_v3JsonBytes() ([]byte, error) { + return bindataRead( + _dataConfig_schema_v3Json, + "data/config_schema_v3.json", + ) +} + +func dataConfig_schema_v3Json() (*asset, error) { + bytes, err := dataConfig_schema_v3JsonBytes() + if err != nil { + return nil, err + } + + info := bindataFileInfo{name: "data/config_schema_v3.json", size: 10301, mode: os.FileMode(436), modTime: time.Unix(1478109572, 0)} + a := &asset{bytes: bytes, info: info} + return a, nil +} + +// Asset loads and returns the asset for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func Asset(name string) ([]byte, error) { + cannonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[cannonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err) + } + return a.bytes, nil + } + return nil, fmt.Errorf("Asset %s not found", name) +} + +// MustAsset is like Asset but panics when Asset would return an error. +// It simplifies safe initialization of global variables. +func MustAsset(name string) []byte { + a, err := Asset(name) + if err != nil { + panic("asset: Asset(" + name + "): " + err.Error()) + } + + return a +} + +// AssetInfo loads and returns the asset info for the given name. +// It returns an error if the asset could not be found or +// could not be loaded. +func AssetInfo(name string) (os.FileInfo, error) { + cannonicalName := strings.Replace(name, "\\", "/", -1) + if f, ok := _bindata[cannonicalName]; ok { + a, err := f() + if err != nil { + return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err) + } + return a.info, nil + } + return nil, fmt.Errorf("AssetInfo %s not found", name) +} + +// AssetNames returns the names of the assets. +func AssetNames() []string { + names := make([]string, 0, len(_bindata)) + for name := range _bindata { + names = append(names, name) + } + return names +} + +// _bindata is a table, holding each asset generator, mapped to its name. +var _bindata = map[string]func() (*asset, error){ + "data/config_schema_v3.json": dataConfig_schema_v3Json, +} + +// AssetDir returns the file names below a certain +// directory embedded in the file by go-bindata. +// For example if you run go-bindata on data/... and data contains the +// following hierarchy: +// data/ +// foo.txt +// img/ +// a.png +// b.png +// then AssetDir("data") would return []string{"foo.txt", "img"} +// AssetDir("data/img") would return []string{"a.png", "b.png"} +// AssetDir("foo.txt") and AssetDir("notexist") would return an error +// AssetDir("") will return []string{"data"}. +func AssetDir(name string) ([]string, error) { + node := _bintree + if len(name) != 0 { + cannonicalName := strings.Replace(name, "\\", "/", -1) + pathList := strings.Split(cannonicalName, "/") + for _, p := range pathList { + node = node.Children[p] + if node == nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + } + } + if node.Func != nil { + return nil, fmt.Errorf("Asset %s not found", name) + } + rv := make([]string, 0, len(node.Children)) + for childName := range node.Children { + rv = append(rv, childName) + } + return rv, nil +} + +type bintree struct { + Func func() (*asset, error) + Children map[string]*bintree +} + +var _bintree = &bintree{nil, map[string]*bintree{ + "data": {nil, map[string]*bintree{ + "config_schema_v3.json": {dataConfig_schema_v3Json, map[string]*bintree{}}, + }}, +}} + +// RestoreAsset restores an asset under the given directory +func RestoreAsset(dir, name string) error { + data, err := Asset(name) + if err != nil { + return err + } + info, err := AssetInfo(name) + if err != nil { + return err + } + err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755)) + if err != nil { + return err + } + err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode()) + if err != nil { + return err + } + err = os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime()) + if err != nil { + return err + } + return nil +} + +// RestoreAssets restores an asset under the given directory recursively +func RestoreAssets(dir, name string) error { + children, err := AssetDir(name) + // File + if err != nil { + return RestoreAsset(dir, name) + } + // Dir + for _, child := range children { + err = RestoreAssets(dir, filepath.Join(name, child)) + if err != nil { + return err + } + } + return nil +} + +func _filePath(dir, name string) string { + cannonicalName := strings.Replace(name, "\\", "/", -1) + return filepath.Join(append([]string{dir}, strings.Split(cannonicalName, "/")...)...) +} diff --git a/components/engine/vendor/github.com/aanand/compose-file/schema/schema.go b/components/engine/vendor/github.com/aanand/compose-file/schema/schema.go new file mode 100644 index 0000000000..938c709c3c --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/schema/schema.go @@ -0,0 +1,113 @@ +package schema + +//go:generate go-bindata -pkg schema data + +import ( + "fmt" + "strings" + "time" + + "github.com/xeipuuv/gojsonschema" +) + +type portsFormatChecker struct{} + +func (checker portsFormatChecker) IsFormat(input string) bool { + // TODO: implement this + return true +} + +type durationFormatChecker struct{} + +func (checker durationFormatChecker) IsFormat(input string) bool { + _, err := time.ParseDuration(input) + return err == nil +} + +func init() { + gojsonschema.FormatCheckers.Add("expose", portsFormatChecker{}) + gojsonschema.FormatCheckers.Add("ports", portsFormatChecker{}) + gojsonschema.FormatCheckers.Add("duration", durationFormatChecker{}) +} + +// Validate uses the jsonschema to validate the configuration +func Validate(config map[string]interface{}) error { + schemaData, err := Asset("data/config_schema_v3.json") + if err != nil { + return err + } + + schemaLoader := gojsonschema.NewStringLoader(string(schemaData)) + dataLoader := gojsonschema.NewGoLoader(config) + + result, err := gojsonschema.Validate(schemaLoader, dataLoader) + if err != nil { + return err + } + + if !result.Valid() { + return toError(result) + } + + return nil +} + +func toError(result *gojsonschema.Result) error { + err := getMostSpecificError(result.Errors()) + description := getDescription(err) + return fmt.Errorf("%s %s", err.Field(), description) +} + +func getDescription(err gojsonschema.ResultError) string { + if err.Type() == "invalid_type" { + if expectedType, ok := err.Details()["expected"].(string); ok { + return fmt.Sprintf("must be a %s", humanReadableType(expectedType)) + } + } + + return err.Description() +} + +func humanReadableType(definition string) string { + if definition[0:1] == "[" { + allTypes := strings.Split(definition[1:len(definition)-1], ",") + for i, t := range allTypes { + allTypes[i] = humanReadableType(t) + } + return fmt.Sprintf( + "%s or %s", + strings.Join(allTypes[0:len(allTypes)-1], ", "), + allTypes[len(allTypes)-1], + ) + } + if definition == "object" { + return "mapping" + } + if definition == "array" { + return "list" + } + return definition +} + +func getMostSpecificError(errors []gojsonschema.ResultError) gojsonschema.ResultError { + var mostSpecificError gojsonschema.ResultError + + for _, err := range errors { + if mostSpecificError == nil { + mostSpecificError = err + } else if specificity(err) > specificity(mostSpecificError) { + mostSpecificError = err + } else if specificity(err) == specificity(mostSpecificError) { + // Invalid type errors win in a tie-breaker for most specific field name + if err.Type() == "invalid_type" && mostSpecificError.Type() != "invalid_type" { + mostSpecificError = err + } + } + } + + return mostSpecificError +} + +func specificity(err gojsonschema.ResultError) int { + return len(strings.Split(err.Field(), ".")) +} diff --git a/components/engine/vendor/github.com/aanand/compose-file/template/template.go b/components/engine/vendor/github.com/aanand/compose-file/template/template.go new file mode 100644 index 0000000000..5b25333881 --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/template/template.go @@ -0,0 +1,108 @@ +package template + +import ( + "fmt" + "regexp" + "strings" +) + +var delimiter = "\\$" +var substitution = "[_a-z][_a-z0-9]*(?::?-[^}]+)?" + +var patternString = fmt.Sprintf( + "%s(?i:(?P%s)|(?P%s)|{(?P%s)}|(?P))", + delimiter, delimiter, substitution, substitution, +) + +var pattern = regexp.MustCompile(patternString) + +type InvalidTemplateError struct { + Template string +} + +func (e InvalidTemplateError) Error() string { + return fmt.Sprintf("Invalid template: %#v", e.Template) +} + +// A user-supplied function which maps from variable names to values. +// Returns the value as a string and a bool indicating whether +// the value is present, to distinguish between an empty string +// and the absence of a value. +type Mapping func(string) (string, bool) + +func Substitute(template string, mapping Mapping) (result string, err *InvalidTemplateError) { + defer func() { + if r := recover(); r != nil { + if e, ok := r.(*InvalidTemplateError); ok { + err = e + } else { + panic(r) + } + } + }() + + result = pattern.ReplaceAllStringFunc(template, func(substring string) string { + matches := pattern.FindStringSubmatch(substring) + groups := make(map[string]string) + for i, name := range pattern.SubexpNames() { + if i != 0 { + groups[name] = matches[i] + } + } + + substitution := groups["named"] + if substitution == "" { + substitution = groups["braced"] + } + if substitution != "" { + // Soft default (fall back if unset or empty) + if strings.Contains(substitution, ":-") { + name, defaultValue := partition(substitution, ":-") + value, ok := mapping(name) + if !ok || value == "" { + return defaultValue + } + return value + } + + // Hard default (fall back if-and-only-if empty) + if strings.Contains(substitution, "-") { + name, defaultValue := partition(substitution, "-") + value, ok := mapping(name) + if !ok { + return defaultValue + } + return value + } + + // No default (fall back to empty string) + value, ok := mapping(substitution) + if !ok { + return "" + } + return value + } + + if escaped := groups["escaped"]; escaped != "" { + return escaped + } + + panic(&InvalidTemplateError{Template: template}) + return "" + }) + + return +} + +// Split the string at the first occurrence of sep, and return the part before the separator, +// and the part after the separator. +// +// If the separator is not found, return the string itself, followed by an empty string. +func partition(s, sep string) (string, string) { + if strings.Contains(s, sep) { + parts := strings.SplitN(s, sep, 2) + return parts[0], parts[1] + } else { + return s, "" + } +} diff --git a/components/engine/vendor/github.com/aanand/compose-file/types/types.go b/components/engine/vendor/github.com/aanand/compose-file/types/types.go new file mode 100644 index 0000000000..7f8c212d4d --- /dev/null +++ b/components/engine/vendor/github.com/aanand/compose-file/types/types.go @@ -0,0 +1,200 @@ +package types + +import ( + "time" +) + +var UnsupportedProperties = []string{ + "build", + "cap_add", + "cap_drop", + "cgroup_parent", + "devices", + "dns", + "dns_search", + "domainname", + "external_links", + "extra_hosts", + "ipc", + "links", + "mac_address", + "network_mode", + "privileged", + "read_only", + "restart", + "security_opt", + "shm_size", + "stdin_open", + "stop_signal", + "tmpfs", +} + +var DeprecatedProperties = map[string]string{ + "container_name": "Setting the container name is not supported.", + "expose": "Exposing ports is unnecessary - services on the same network can access each other's containers on any port.", +} + +var ForbiddenProperties = map[string]string{ + "extends": "Support for `extends` is not implemented yet. Use `docker-compose config` to generate a configuration with all `extends` options resolved, and deploy from that.", + "volume_driver": "Instead of setting the volume driver on the service, define a volume using the top-level `volumes` option and specify the driver there.", + "volumes_from": "To share a volume between services, define it using the top-level `volumes` option and reference it from each service that shares it using the service-level `volumes` option.", + "cpu_quota": "Set resource limits using deploy.resources", + "cpu_shares": "Set resource limits using deploy.resources", + "cpuset": "Set resource limits using deploy.resources", + "mem_limit": "Set resource limits using deploy.resources", + "memswap_limit": "Set resource limits using deploy.resources", +} + +type Dict map[string]interface{} + +type ConfigFile struct { + Filename string + Config Dict +} + +type ConfigDetails struct { + WorkingDir string + ConfigFiles []ConfigFile + Environment map[string]string +} + +type Config struct { + Services []ServiceConfig + Networks map[string]NetworkConfig + Volumes map[string]VolumeConfig +} + +type ServiceConfig struct { + Name string + + CapAdd []string `mapstructure:"cap_add"` + CapDrop []string `mapstructure:"cap_drop"` + CgroupParent string `mapstructure:"cgroup_parent"` + Command []string `compose:"shell_command"` + ContainerName string `mapstructure:"container_name"` + DependsOn []string `mapstructure:"depends_on"` + Deploy DeployConfig + Devices []string + Dns []string `compose:"string_or_list"` + DnsSearch []string `mapstructure:"dns_search" compose:"string_or_list"` + DomainName string `mapstructure:"domainname"` + Entrypoint []string `compose:"shell_command"` + Environment map[string]string `compose:"list_or_dict_equals"` + Expose []string `compose:"list_of_strings_or_numbers"` + ExternalLinks []string `mapstructure:"external_links"` + ExtraHosts map[string]string `mapstructure:"extra_hosts" compose:"list_or_dict_colon"` + Hostname string + Image string + Ipc string + Labels map[string]string `compose:"list_or_dict_equals"` + Links []string + Logging *LoggingConfig + MacAddress string `mapstructure:"mac_address"` + NetworkMode string `mapstructure:"network_mode"` + Networks map[string]*ServiceNetworkConfig `compose:"list_or_struct_map"` + Pid string + Ports []string `compose:"list_of_strings_or_numbers"` + Privileged bool + ReadOnly bool `mapstructure:"read_only"` + Restart string + SecurityOpt []string `mapstructure:"security_opt"` + StdinOpen bool `mapstructure:"stdin_open"` + StopGracePeriod *time.Duration `mapstructure:"stop_grace_period"` + StopSignal string `mapstructure:"stop_signal"` + Tmpfs []string `compose:"string_or_list"` + Tty bool `mapstructure:"tty"` + Ulimits map[string]*UlimitsConfig + User string + Volumes []string + WorkingDir string `mapstructure:"working_dir"` +} + +type LoggingConfig struct { + Driver string + Options map[string]string +} + +type DeployConfig struct { + Mode string + Replicas *uint64 + Labels map[string]string `compose:"list_or_dict_equals"` + UpdateConfig *UpdateConfig `mapstructure:"update_config"` + Resources Resources + RestartPolicy *RestartPolicy `mapstructure:"restart_policy"` + Placement Placement +} + +type UpdateConfig struct { + Parallelism uint64 + Delay time.Duration + FailureAction string `mapstructure:"failure_action"` + Monitor time.Duration + MaxFailureRatio float32 `mapstructure:"max_failure_ratio"` +} + +type Resources struct { + Limits *Resource + Reservations *Resource +} + +type Resource struct { + // TODO: types to convert from units and ratios + NanoCPUs string `mapstructure:"cpus"` + MemoryBytes UnitBytes `mapstructure:"memory"` +} + +type UnitBytes int64 + +type RestartPolicy struct { + Condition string + Delay *time.Duration + MaxAttempts *uint64 `mapstructure:"max_attempts"` + Window *time.Duration +} + +type Placement struct { + Constraints []string +} + +type ServiceNetworkConfig struct { + Aliases []string + Ipv4Address string `mapstructure:"ipv4_address"` + Ipv6Address string `mapstructure:"ipv6_address"` +} + +type UlimitsConfig struct { + Single int + Soft int + Hard int +} + +type NetworkConfig struct { + Driver string + DriverOpts map[string]string `mapstructure:"driver_opts"` + Ipam IPAMConfig + External External + Labels map[string]string `compose:"list_or_dict_equals"` +} + +type IPAMConfig struct { + Driver string + Config []*IPAMPool +} + +type IPAMPool struct { + Subnet string +} + +type VolumeConfig struct { + Driver string + DriverOpts map[string]string `mapstructure:"driver_opts"` + External External + Labels map[string]string `compose:"list_or_dict_equals"` +} + +// External identifies a Volume or Network as a reference to a resource that is +// not managed, and should already exist. +type External struct { + Name string + External bool +} diff --git a/components/engine/vendor/github.com/mitchellh/mapstructure/LICENSE b/components/engine/vendor/github.com/mitchellh/mapstructure/LICENSE new file mode 100644 index 0000000000..f9c841a51e --- /dev/null +++ b/components/engine/vendor/github.com/mitchellh/mapstructure/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) 2013 Mitchell Hashimoto + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/components/engine/vendor/github.com/mitchellh/mapstructure/decode_hooks.go b/components/engine/vendor/github.com/mitchellh/mapstructure/decode_hooks.go new file mode 100644 index 0000000000..115ae67c11 --- /dev/null +++ b/components/engine/vendor/github.com/mitchellh/mapstructure/decode_hooks.go @@ -0,0 +1,154 @@ +package mapstructure + +import ( + "errors" + "reflect" + "strconv" + "strings" + "time" +) + +// typedDecodeHook takes a raw DecodeHookFunc (an interface{}) and turns +// it into the proper DecodeHookFunc type, such as DecodeHookFuncType. +func typedDecodeHook(h DecodeHookFunc) DecodeHookFunc { + // Create variables here so we can reference them with the reflect pkg + var f1 DecodeHookFuncType + var f2 DecodeHookFuncKind + + // Fill in the variables into this interface and the rest is done + // automatically using the reflect package. + potential := []interface{}{f1, f2} + + v := reflect.ValueOf(h) + vt := v.Type() + for _, raw := range potential { + pt := reflect.ValueOf(raw).Type() + if vt.ConvertibleTo(pt) { + return v.Convert(pt).Interface() + } + } + + return nil +} + +// DecodeHookExec executes the given decode hook. This should be used +// since it'll naturally degrade to the older backwards compatible DecodeHookFunc +// that took reflect.Kind instead of reflect.Type. +func DecodeHookExec( + raw DecodeHookFunc, + from reflect.Type, to reflect.Type, + data interface{}) (interface{}, error) { + // Build our arguments that reflect expects + argVals := make([]reflect.Value, 3) + argVals[0] = reflect.ValueOf(from) + argVals[1] = reflect.ValueOf(to) + argVals[2] = reflect.ValueOf(data) + + switch f := typedDecodeHook(raw).(type) { + case DecodeHookFuncType: + return f(from, to, data) + case DecodeHookFuncKind: + return f(from.Kind(), to.Kind(), data) + default: + return nil, errors.New("invalid decode hook signature") + } +} + +// ComposeDecodeHookFunc creates a single DecodeHookFunc that +// automatically composes multiple DecodeHookFuncs. +// +// The composed funcs are called in order, with the result of the +// previous transformation. +func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc { + return func( + f reflect.Type, + t reflect.Type, + data interface{}) (interface{}, error) { + var err error + for _, f1 := range fs { + data, err = DecodeHookExec(f1, f, t, data) + if err != nil { + return nil, err + } + + // Modify the from kind to be correct with the new data + f = nil + if val := reflect.ValueOf(data); val.IsValid() { + f = val.Type() + } + } + + return data, nil + } +} + +// StringToSliceHookFunc returns a DecodeHookFunc that converts +// string to []string by splitting on the given sep. +func StringToSliceHookFunc(sep string) DecodeHookFunc { + return func( + f reflect.Kind, + t reflect.Kind, + data interface{}) (interface{}, error) { + if f != reflect.String || t != reflect.Slice { + return data, nil + } + + raw := data.(string) + if raw == "" { + return []string{}, nil + } + + return strings.Split(raw, sep), nil + } +} + +// StringToTimeDurationHookFunc returns a DecodeHookFunc that converts +// strings to time.Duration. +func StringToTimeDurationHookFunc() DecodeHookFunc { + return func( + f reflect.Type, + t reflect.Type, + data interface{}) (interface{}, error) { + if f.Kind() != reflect.String { + return data, nil + } + if t != reflect.TypeOf(time.Duration(5)) { + return data, nil + } + + // Convert it by parsing + return time.ParseDuration(data.(string)) + } +} + +func WeaklyTypedHook( + f reflect.Kind, + t reflect.Kind, + data interface{}) (interface{}, error) { + dataVal := reflect.ValueOf(data) + switch t { + case reflect.String: + switch f { + case reflect.Bool: + if dataVal.Bool() { + return "1", nil + } else { + return "0", nil + } + case reflect.Float32: + return strconv.FormatFloat(dataVal.Float(), 'f', -1, 64), nil + case reflect.Int: + return strconv.FormatInt(dataVal.Int(), 10), nil + case reflect.Slice: + dataType := dataVal.Type() + elemKind := dataType.Elem().Kind() + if elemKind == reflect.Uint8 { + return string(dataVal.Interface().([]uint8)), nil + } + case reflect.Uint: + return strconv.FormatUint(dataVal.Uint(), 10), nil + } + } + + return data, nil +} diff --git a/components/engine/vendor/github.com/mitchellh/mapstructure/error.go b/components/engine/vendor/github.com/mitchellh/mapstructure/error.go new file mode 100644 index 0000000000..47a99e5af3 --- /dev/null +++ b/components/engine/vendor/github.com/mitchellh/mapstructure/error.go @@ -0,0 +1,50 @@ +package mapstructure + +import ( + "errors" + "fmt" + "sort" + "strings" +) + +// Error implements the error interface and can represents multiple +// errors that occur in the course of a single decode. +type Error struct { + Errors []string +} + +func (e *Error) Error() string { + points := make([]string, len(e.Errors)) + for i, err := range e.Errors { + points[i] = fmt.Sprintf("* %s", err) + } + + sort.Strings(points) + return fmt.Sprintf( + "%d error(s) decoding:\n\n%s", + len(e.Errors), strings.Join(points, "\n")) +} + +// WrappedErrors implements the errwrap.Wrapper interface to make this +// return value more useful with the errwrap and go-multierror libraries. +func (e *Error) WrappedErrors() []error { + if e == nil { + return nil + } + + result := make([]error, len(e.Errors)) + for i, e := range e.Errors { + result[i] = errors.New(e) + } + + return result +} + +func appendErrors(errors []string, err error) []string { + switch e := err.(type) { + case *Error: + return append(errors, e.Errors...) + default: + return append(errors, e.Error()) + } +} diff --git a/components/engine/vendor/github.com/mitchellh/mapstructure/mapstructure.go b/components/engine/vendor/github.com/mitchellh/mapstructure/mapstructure.go new file mode 100644 index 0000000000..b0ab89b631 --- /dev/null +++ b/components/engine/vendor/github.com/mitchellh/mapstructure/mapstructure.go @@ -0,0 +1,782 @@ +// The mapstructure package exposes functionality to convert an +// abitrary map[string]interface{} into a native Go structure. +// +// The Go structure can be arbitrarily complex, containing slices, +// other structs, etc. and the decoder will properly decode nested +// maps and so on into the proper structures in the native Go struct. +// See the examples to see what the decoder is capable of. +package mapstructure + +import ( + "encoding/json" + "errors" + "fmt" + "reflect" + "sort" + "strconv" + "strings" +) + +// DecodeHookFunc is the callback function that can be used for +// data transformations. See "DecodeHook" in the DecoderConfig +// struct. +// +// The type should be DecodeHookFuncType or DecodeHookFuncKind. +// Either is accepted. Types are a superset of Kinds (Types can return +// Kinds) and are generally a richer thing to use, but Kinds are simpler +// if you only need those. +// +// The reason DecodeHookFunc is multi-typed is for backwards compatibility: +// we started with Kinds and then realized Types were the better solution, +// but have a promise to not break backwards compat so we now support +// both. +type DecodeHookFunc interface{} + +type DecodeHookFuncType func(reflect.Type, reflect.Type, interface{}) (interface{}, error) +type DecodeHookFuncKind func(reflect.Kind, reflect.Kind, interface{}) (interface{}, error) + +// DecoderConfig is the configuration that is used to create a new decoder +// and allows customization of various aspects of decoding. +type DecoderConfig struct { + // DecodeHook, if set, will be called before any decoding and any + // type conversion (if WeaklyTypedInput is on). This lets you modify + // the values before they're set down onto the resulting struct. + // + // If an error is returned, the entire decode will fail with that + // error. + DecodeHook DecodeHookFunc + + // If ErrorUnused is true, then it is an error for there to exist + // keys in the original map that were unused in the decoding process + // (extra keys). + ErrorUnused bool + + // ZeroFields, if set to true, will zero fields before writing them. + // For example, a map will be emptied before decoded values are put in + // it. If this is false, a map will be merged. + ZeroFields bool + + // If WeaklyTypedInput is true, the decoder will make the following + // "weak" conversions: + // + // - bools to string (true = "1", false = "0") + // - numbers to string (base 10) + // - bools to int/uint (true = 1, false = 0) + // - strings to int/uint (base implied by prefix) + // - int to bool (true if value != 0) + // - string to bool (accepts: 1, t, T, TRUE, true, True, 0, f, F, + // FALSE, false, False. Anything else is an error) + // - empty array = empty map and vice versa + // - negative numbers to overflowed uint values (base 10) + // - slice of maps to a merged map + // + WeaklyTypedInput bool + + // Metadata is the struct that will contain extra metadata about + // the decoding. If this is nil, then no metadata will be tracked. + Metadata *Metadata + + // Result is a pointer to the struct that will contain the decoded + // value. + Result interface{} + + // The tag name that mapstructure reads for field names. This + // defaults to "mapstructure" + TagName string +} + +// A Decoder takes a raw interface value and turns it into structured +// data, keeping track of rich error information along the way in case +// anything goes wrong. Unlike the basic top-level Decode method, you can +// more finely control how the Decoder behaves using the DecoderConfig +// structure. The top-level Decode method is just a convenience that sets +// up the most basic Decoder. +type Decoder struct { + config *DecoderConfig +} + +// Metadata contains information about decoding a structure that +// is tedious or difficult to get otherwise. +type Metadata struct { + // Keys are the keys of the structure which were successfully decoded + Keys []string + + // Unused is a slice of keys that were found in the raw value but + // weren't decoded since there was no matching field in the result interface + Unused []string +} + +// Decode takes a map and uses reflection to convert it into the +// given Go native structure. val must be a pointer to a struct. +func Decode(m interface{}, rawVal interface{}) error { + config := &DecoderConfig{ + Metadata: nil, + Result: rawVal, + } + + decoder, err := NewDecoder(config) + if err != nil { + return err + } + + return decoder.Decode(m) +} + +// WeakDecode is the same as Decode but is shorthand to enable +// WeaklyTypedInput. See DecoderConfig for more info. +func WeakDecode(input, output interface{}) error { + config := &DecoderConfig{ + Metadata: nil, + Result: output, + WeaklyTypedInput: true, + } + + decoder, err := NewDecoder(config) + if err != nil { + return err + } + + return decoder.Decode(input) +} + +// NewDecoder returns a new decoder for the given configuration. Once +// a decoder has been returned, the same configuration must not be used +// again. +func NewDecoder(config *DecoderConfig) (*Decoder, error) { + val := reflect.ValueOf(config.Result) + if val.Kind() != reflect.Ptr { + return nil, errors.New("result must be a pointer") + } + + val = val.Elem() + if !val.CanAddr() { + return nil, errors.New("result must be addressable (a pointer)") + } + + if config.Metadata != nil { + if config.Metadata.Keys == nil { + config.Metadata.Keys = make([]string, 0) + } + + if config.Metadata.Unused == nil { + config.Metadata.Unused = make([]string, 0) + } + } + + if config.TagName == "" { + config.TagName = "mapstructure" + } + + result := &Decoder{ + config: config, + } + + return result, nil +} + +// Decode decodes the given raw interface to the target pointer specified +// by the configuration. +func (d *Decoder) Decode(raw interface{}) error { + return d.decode("", raw, reflect.ValueOf(d.config.Result).Elem()) +} + +// Decodes an unknown data type into a specific reflection value. +func (d *Decoder) decode(name string, data interface{}, val reflect.Value) error { + if data == nil { + // If the data is nil, then we don't set anything. + return nil + } + + dataVal := reflect.ValueOf(data) + if !dataVal.IsValid() { + // If the data value is invalid, then we just set the value + // to be the zero value. + val.Set(reflect.Zero(val.Type())) + return nil + } + + if d.config.DecodeHook != nil { + // We have a DecodeHook, so let's pre-process the data. + var err error + data, err = DecodeHookExec( + d.config.DecodeHook, + dataVal.Type(), val.Type(), data) + if err != nil { + return err + } + } + + var err error + dataKind := getKind(val) + switch dataKind { + case reflect.Bool: + err = d.decodeBool(name, data, val) + case reflect.Interface: + err = d.decodeBasic(name, data, val) + case reflect.String: + err = d.decodeString(name, data, val) + case reflect.Int: + err = d.decodeInt(name, data, val) + case reflect.Uint: + err = d.decodeUint(name, data, val) + case reflect.Float32: + err = d.decodeFloat(name, data, val) + case reflect.Struct: + err = d.decodeStruct(name, data, val) + case reflect.Map: + err = d.decodeMap(name, data, val) + case reflect.Ptr: + err = d.decodePtr(name, data, val) + case reflect.Slice: + err = d.decodeSlice(name, data, val) + default: + // If we reached this point then we weren't able to decode it + return fmt.Errorf("%s: unsupported type: %s", name, dataKind) + } + + // If we reached here, then we successfully decoded SOMETHING, so + // mark the key as used if we're tracking metadata. + if d.config.Metadata != nil && name != "" { + d.config.Metadata.Keys = append(d.config.Metadata.Keys, name) + } + + return err +} + +// This decodes a basic type (bool, int, string, etc.) and sets the +// value to "data" of that type. +func (d *Decoder) decodeBasic(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.ValueOf(data) + if !dataVal.IsValid() { + dataVal = reflect.Zero(val.Type()) + } + + dataValType := dataVal.Type() + if !dataValType.AssignableTo(val.Type()) { + return fmt.Errorf( + "'%s' expected type '%s', got '%s'", + name, val.Type(), dataValType) + } + + val.Set(dataVal) + return nil +} + +func (d *Decoder) decodeString(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.ValueOf(data) + dataKind := getKind(dataVal) + + converted := true + switch { + case dataKind == reflect.String: + val.SetString(dataVal.String()) + case dataKind == reflect.Bool && d.config.WeaklyTypedInput: + if dataVal.Bool() { + val.SetString("1") + } else { + val.SetString("0") + } + case dataKind == reflect.Int && d.config.WeaklyTypedInput: + val.SetString(strconv.FormatInt(dataVal.Int(), 10)) + case dataKind == reflect.Uint && d.config.WeaklyTypedInput: + val.SetString(strconv.FormatUint(dataVal.Uint(), 10)) + case dataKind == reflect.Float32 && d.config.WeaklyTypedInput: + val.SetString(strconv.FormatFloat(dataVal.Float(), 'f', -1, 64)) + case dataKind == reflect.Slice && d.config.WeaklyTypedInput: + dataType := dataVal.Type() + elemKind := dataType.Elem().Kind() + switch { + case elemKind == reflect.Uint8: + val.SetString(string(dataVal.Interface().([]uint8))) + default: + converted = false + } + default: + converted = false + } + + if !converted { + return fmt.Errorf( + "'%s' expected type '%s', got unconvertible type '%s'", + name, val.Type(), dataVal.Type()) + } + + return nil +} + +func (d *Decoder) decodeInt(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.ValueOf(data) + dataKind := getKind(dataVal) + dataType := dataVal.Type() + + switch { + case dataKind == reflect.Int: + val.SetInt(dataVal.Int()) + case dataKind == reflect.Uint: + val.SetInt(int64(dataVal.Uint())) + case dataKind == reflect.Float32: + val.SetInt(int64(dataVal.Float())) + case dataKind == reflect.Bool && d.config.WeaklyTypedInput: + if dataVal.Bool() { + val.SetInt(1) + } else { + val.SetInt(0) + } + case dataKind == reflect.String && d.config.WeaklyTypedInput: + i, err := strconv.ParseInt(dataVal.String(), 0, val.Type().Bits()) + if err == nil { + val.SetInt(i) + } else { + return fmt.Errorf("cannot parse '%s' as int: %s", name, err) + } + case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number": + jn := data.(json.Number) + i, err := jn.Int64() + if err != nil { + return fmt.Errorf( + "error decoding json.Number into %s: %s", name, err) + } + val.SetInt(i) + default: + return fmt.Errorf( + "'%s' expected type '%s', got unconvertible type '%s'", + name, val.Type(), dataVal.Type()) + } + + return nil +} + +func (d *Decoder) decodeUint(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.ValueOf(data) + dataKind := getKind(dataVal) + + switch { + case dataKind == reflect.Int: + i := dataVal.Int() + if i < 0 && !d.config.WeaklyTypedInput { + return fmt.Errorf("cannot parse '%s', %d overflows uint", + name, i) + } + val.SetUint(uint64(i)) + case dataKind == reflect.Uint: + val.SetUint(dataVal.Uint()) + case dataKind == reflect.Float32: + f := dataVal.Float() + if f < 0 && !d.config.WeaklyTypedInput { + return fmt.Errorf("cannot parse '%s', %f overflows uint", + name, f) + } + val.SetUint(uint64(f)) + case dataKind == reflect.Bool && d.config.WeaklyTypedInput: + if dataVal.Bool() { + val.SetUint(1) + } else { + val.SetUint(0) + } + case dataKind == reflect.String && d.config.WeaklyTypedInput: + i, err := strconv.ParseUint(dataVal.String(), 0, val.Type().Bits()) + if err == nil { + val.SetUint(i) + } else { + return fmt.Errorf("cannot parse '%s' as uint: %s", name, err) + } + default: + return fmt.Errorf( + "'%s' expected type '%s', got unconvertible type '%s'", + name, val.Type(), dataVal.Type()) + } + + return nil +} + +func (d *Decoder) decodeBool(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.ValueOf(data) + dataKind := getKind(dataVal) + + switch { + case dataKind == reflect.Bool: + val.SetBool(dataVal.Bool()) + case dataKind == reflect.Int && d.config.WeaklyTypedInput: + val.SetBool(dataVal.Int() != 0) + case dataKind == reflect.Uint && d.config.WeaklyTypedInput: + val.SetBool(dataVal.Uint() != 0) + case dataKind == reflect.Float32 && d.config.WeaklyTypedInput: + val.SetBool(dataVal.Float() != 0) + case dataKind == reflect.String && d.config.WeaklyTypedInput: + b, err := strconv.ParseBool(dataVal.String()) + if err == nil { + val.SetBool(b) + } else if dataVal.String() == "" { + val.SetBool(false) + } else { + return fmt.Errorf("cannot parse '%s' as bool: %s", name, err) + } + default: + return fmt.Errorf( + "'%s' expected type '%s', got unconvertible type '%s'", + name, val.Type(), dataVal.Type()) + } + + return nil +} + +func (d *Decoder) decodeFloat(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.ValueOf(data) + dataKind := getKind(dataVal) + dataType := dataVal.Type() + + switch { + case dataKind == reflect.Int: + val.SetFloat(float64(dataVal.Int())) + case dataKind == reflect.Uint: + val.SetFloat(float64(dataVal.Uint())) + case dataKind == reflect.Float32: + val.SetFloat(float64(dataVal.Float())) + case dataKind == reflect.Bool && d.config.WeaklyTypedInput: + if dataVal.Bool() { + val.SetFloat(1) + } else { + val.SetFloat(0) + } + case dataKind == reflect.String && d.config.WeaklyTypedInput: + f, err := strconv.ParseFloat(dataVal.String(), val.Type().Bits()) + if err == nil { + val.SetFloat(f) + } else { + return fmt.Errorf("cannot parse '%s' as float: %s", name, err) + } + case dataType.PkgPath() == "encoding/json" && dataType.Name() == "Number": + jn := data.(json.Number) + i, err := jn.Float64() + if err != nil { + return fmt.Errorf( + "error decoding json.Number into %s: %s", name, err) + } + val.SetFloat(i) + default: + return fmt.Errorf( + "'%s' expected type '%s', got unconvertible type '%s'", + name, val.Type(), dataVal.Type()) + } + + return nil +} + +func (d *Decoder) decodeMap(name string, data interface{}, val reflect.Value) error { + valType := val.Type() + valKeyType := valType.Key() + valElemType := valType.Elem() + + // By default we overwrite keys in the current map + valMap := val + + // If the map is nil or we're purposely zeroing fields, make a new map + if valMap.IsNil() || d.config.ZeroFields { + // Make a new map to hold our result + mapType := reflect.MapOf(valKeyType, valElemType) + valMap = reflect.MakeMap(mapType) + } + + // Check input type + dataVal := reflect.Indirect(reflect.ValueOf(data)) + if dataVal.Kind() != reflect.Map { + // In weak mode, we accept a slice of maps as an input... + if d.config.WeaklyTypedInput { + switch dataVal.Kind() { + case reflect.Array, reflect.Slice: + // Special case for BC reasons (covered by tests) + if dataVal.Len() == 0 { + val.Set(valMap) + return nil + } + + for i := 0; i < dataVal.Len(); i++ { + err := d.decode( + fmt.Sprintf("%s[%d]", name, i), + dataVal.Index(i).Interface(), val) + if err != nil { + return err + } + } + + return nil + } + } + + return fmt.Errorf("'%s' expected a map, got '%s'", name, dataVal.Kind()) + } + + // Accumulate errors + errors := make([]string, 0) + + for _, k := range dataVal.MapKeys() { + fieldName := fmt.Sprintf("%s[%s]", name, k) + + // First decode the key into the proper type + currentKey := reflect.Indirect(reflect.New(valKeyType)) + if err := d.decode(fieldName, k.Interface(), currentKey); err != nil { + errors = appendErrors(errors, err) + continue + } + + // Next decode the data into the proper type + v := dataVal.MapIndex(k).Interface() + currentVal := reflect.Indirect(reflect.New(valElemType)) + if err := d.decode(fieldName, v, currentVal); err != nil { + errors = appendErrors(errors, err) + continue + } + + valMap.SetMapIndex(currentKey, currentVal) + } + + // Set the built up map to the value + val.Set(valMap) + + // If we had errors, return those + if len(errors) > 0 { + return &Error{errors} + } + + return nil +} + +func (d *Decoder) decodePtr(name string, data interface{}, val reflect.Value) error { + // Create an element of the concrete (non pointer) type and decode + // into that. Then set the value of the pointer to this type. + valType := val.Type() + valElemType := valType.Elem() + realVal := reflect.New(valElemType) + if err := d.decode(name, data, reflect.Indirect(realVal)); err != nil { + return err + } + + val.Set(realVal) + return nil +} + +func (d *Decoder) decodeSlice(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.Indirect(reflect.ValueOf(data)) + dataValKind := dataVal.Kind() + valType := val.Type() + valElemType := valType.Elem() + sliceType := reflect.SliceOf(valElemType) + + // Check input type + if dataValKind != reflect.Array && dataValKind != reflect.Slice { + // Accept empty map instead of array/slice in weakly typed mode + if d.config.WeaklyTypedInput && dataVal.Kind() == reflect.Map && dataVal.Len() == 0 { + val.Set(reflect.MakeSlice(sliceType, 0, 0)) + return nil + } else { + return fmt.Errorf( + "'%s': source data must be an array or slice, got %s", name, dataValKind) + } + } + + // Make a new slice to hold our result, same size as the original data. + valSlice := reflect.MakeSlice(sliceType, dataVal.Len(), dataVal.Len()) + + // Accumulate any errors + errors := make([]string, 0) + + for i := 0; i < dataVal.Len(); i++ { + currentData := dataVal.Index(i).Interface() + currentField := valSlice.Index(i) + + fieldName := fmt.Sprintf("%s[%d]", name, i) + if err := d.decode(fieldName, currentData, currentField); err != nil { + errors = appendErrors(errors, err) + } + } + + // Finally, set the value to the slice we built up + val.Set(valSlice) + + // If there were errors, we return those + if len(errors) > 0 { + return &Error{errors} + } + + return nil +} + +func (d *Decoder) decodeStruct(name string, data interface{}, val reflect.Value) error { + dataVal := reflect.Indirect(reflect.ValueOf(data)) + + // If the type of the value to write to and the data match directly, + // then we just set it directly instead of recursing into the structure. + if dataVal.Type() == val.Type() { + val.Set(dataVal) + return nil + } + + dataValKind := dataVal.Kind() + if dataValKind != reflect.Map { + return fmt.Errorf("'%s' expected a map, got '%s'", name, dataValKind) + } + + dataValType := dataVal.Type() + if kind := dataValType.Key().Kind(); kind != reflect.String && kind != reflect.Interface { + return fmt.Errorf( + "'%s' needs a map with string keys, has '%s' keys", + name, dataValType.Key().Kind()) + } + + dataValKeys := make(map[reflect.Value]struct{}) + dataValKeysUnused := make(map[interface{}]struct{}) + for _, dataValKey := range dataVal.MapKeys() { + dataValKeys[dataValKey] = struct{}{} + dataValKeysUnused[dataValKey.Interface()] = struct{}{} + } + + errors := make([]string, 0) + + // This slice will keep track of all the structs we'll be decoding. + // There can be more than one struct if there are embedded structs + // that are squashed. + structs := make([]reflect.Value, 1, 5) + structs[0] = val + + // Compile the list of all the fields that we're going to be decoding + // from all the structs. + fields := make(map[*reflect.StructField]reflect.Value) + for len(structs) > 0 { + structVal := structs[0] + structs = structs[1:] + + structType := structVal.Type() + + for i := 0; i < structType.NumField(); i++ { + fieldType := structType.Field(i) + fieldKind := fieldType.Type.Kind() + + // If "squash" is specified in the tag, we squash the field down. + squash := false + tagParts := strings.Split(fieldType.Tag.Get(d.config.TagName), ",") + for _, tag := range tagParts[1:] { + if tag == "squash" { + squash = true + break + } + } + + if squash { + if fieldKind != reflect.Struct { + errors = appendErrors(errors, + fmt.Errorf("%s: unsupported type for squash: %s", fieldType.Name, fieldKind)) + } else { + structs = append(structs, val.FieldByName(fieldType.Name)) + } + continue + } + + // Normal struct field, store it away + fields[&fieldType] = structVal.Field(i) + } + } + + for fieldType, field := range fields { + fieldName := fieldType.Name + + tagValue := fieldType.Tag.Get(d.config.TagName) + tagValue = strings.SplitN(tagValue, ",", 2)[0] + if tagValue != "" { + fieldName = tagValue + } + + rawMapKey := reflect.ValueOf(fieldName) + rawMapVal := dataVal.MapIndex(rawMapKey) + if !rawMapVal.IsValid() { + // Do a slower search by iterating over each key and + // doing case-insensitive search. + for dataValKey := range dataValKeys { + mK, ok := dataValKey.Interface().(string) + if !ok { + // Not a string key + continue + } + + if strings.EqualFold(mK, fieldName) { + rawMapKey = dataValKey + rawMapVal = dataVal.MapIndex(dataValKey) + break + } + } + + if !rawMapVal.IsValid() { + // There was no matching key in the map for the value in + // the struct. Just ignore. + continue + } + } + + // Delete the key we're using from the unused map so we stop tracking + delete(dataValKeysUnused, rawMapKey.Interface()) + + if !field.IsValid() { + // This should never happen + panic("field is not valid") + } + + // If we can't set the field, then it is unexported or something, + // and we just continue onwards. + if !field.CanSet() { + continue + } + + // If the name is empty string, then we're at the root, and we + // don't dot-join the fields. + if name != "" { + fieldName = fmt.Sprintf("%s.%s", name, fieldName) + } + + if err := d.decode(fieldName, rawMapVal.Interface(), field); err != nil { + errors = appendErrors(errors, err) + } + } + + if d.config.ErrorUnused && len(dataValKeysUnused) > 0 { + keys := make([]string, 0, len(dataValKeysUnused)) + for rawKey := range dataValKeysUnused { + keys = append(keys, rawKey.(string)) + } + sort.Strings(keys) + + err := fmt.Errorf("'%s' has invalid keys: %s", name, strings.Join(keys, ", ")) + errors = appendErrors(errors, err) + } + + if len(errors) > 0 { + return &Error{errors} + } + + // Add the unused keys to the list of unused keys if we're tracking metadata + if d.config.Metadata != nil { + for rawKey := range dataValKeysUnused { + key := rawKey.(string) + if name != "" { + key = fmt.Sprintf("%s.%s", name, key) + } + + d.config.Metadata.Unused = append(d.config.Metadata.Unused, key) + } + } + + return nil +} + +func getKind(val reflect.Value) reflect.Kind { + kind := val.Kind() + + switch { + case kind >= reflect.Int && kind <= reflect.Int64: + return reflect.Int + case kind >= reflect.Uint && kind <= reflect.Uint64: + return reflect.Uint + case kind >= reflect.Float32 && kind <= reflect.Float64: + return reflect.Float32 + default: + return kind + } +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonpointer/pointer.go b/components/engine/vendor/github.com/xeipuuv/gojsonpointer/pointer.go new file mode 100644 index 0000000000..6ca317a48e --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonpointer/pointer.go @@ -0,0 +1,217 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonpointer +// repository-desc An implementation of JSON Pointer - Go language +// +// description Main and unique file. +// +// created 25-02-2013 + +package gojsonpointer + +import ( + "errors" + "fmt" + "reflect" + "strconv" + "strings" +) + +const ( + const_empty_pointer = `` + const_pointer_separator = `/` + + const_invalid_start = `JSON pointer must be empty or start with a "` + const_pointer_separator + `"` +) + +type implStruct struct { + mode string // "SET" or "GET" + + inDocument interface{} + + setInValue interface{} + + getOutNode interface{} + getOutKind reflect.Kind + outError error +} + +func NewJsonPointer(jsonPointerString string) (JsonPointer, error) { + + var p JsonPointer + err := p.parse(jsonPointerString) + return p, err + +} + +type JsonPointer struct { + referenceTokens []string +} + +// "Constructor", parses the given string JSON pointer +func (p *JsonPointer) parse(jsonPointerString string) error { + + var err error + + if jsonPointerString != const_empty_pointer { + if !strings.HasPrefix(jsonPointerString, const_pointer_separator) { + err = errors.New(const_invalid_start) + } else { + referenceTokens := strings.Split(jsonPointerString, const_pointer_separator) + for _, referenceToken := range referenceTokens[1:] { + p.referenceTokens = append(p.referenceTokens, referenceToken) + } + } + } + + return err +} + +// Uses the pointer to retrieve a value from a JSON document +func (p *JsonPointer) Get(document interface{}) (interface{}, reflect.Kind, error) { + + is := &implStruct{mode: "GET", inDocument: document} + p.implementation(is) + return is.getOutNode, is.getOutKind, is.outError + +} + +// Uses the pointer to update a value from a JSON document +func (p *JsonPointer) Set(document interface{}, value interface{}) (interface{}, error) { + + is := &implStruct{mode: "SET", inDocument: document, setInValue: value} + p.implementation(is) + return document, is.outError + +} + +// Both Get and Set functions use the same implementation to avoid code duplication +func (p *JsonPointer) implementation(i *implStruct) { + + kind := reflect.Invalid + + // Full document when empty + if len(p.referenceTokens) == 0 { + i.getOutNode = i.inDocument + i.outError = nil + i.getOutKind = kind + i.outError = nil + return + } + + node := i.inDocument + + for ti, token := range p.referenceTokens { + + decodedToken := decodeReferenceToken(token) + isLastToken := ti == len(p.referenceTokens)-1 + + rValue := reflect.ValueOf(node) + kind = rValue.Kind() + + switch kind { + + case reflect.Map: + m := node.(map[string]interface{}) + if _, ok := m[decodedToken]; ok { + node = m[decodedToken] + if isLastToken && i.mode == "SET" { + m[decodedToken] = i.setInValue + } + } else { + i.outError = errors.New(fmt.Sprintf("Object has no key '%s'", token)) + i.getOutKind = kind + i.getOutNode = nil + return + } + + case reflect.Slice: + s := node.([]interface{}) + tokenIndex, err := strconv.Atoi(token) + if err != nil { + i.outError = errors.New(fmt.Sprintf("Invalid array index '%s'", token)) + i.getOutKind = kind + i.getOutNode = nil + return + } + sLength := len(s) + if tokenIndex < 0 || tokenIndex >= sLength { + i.outError = errors.New(fmt.Sprintf("Out of bound array[0,%d] index '%d'", sLength, tokenIndex)) + i.getOutKind = kind + i.getOutNode = nil + return + } + + node = s[tokenIndex] + if isLastToken && i.mode == "SET" { + s[tokenIndex] = i.setInValue + } + + default: + i.outError = errors.New(fmt.Sprintf("Invalid token reference '%s'", token)) + i.getOutKind = kind + i.getOutNode = nil + return + } + + } + + rValue := reflect.ValueOf(node) + kind = rValue.Kind() + + i.getOutNode = node + i.getOutKind = kind + i.outError = nil +} + +// Pointer to string representation function +func (p *JsonPointer) String() string { + + if len(p.referenceTokens) == 0 { + return const_empty_pointer + } + + pointerString := const_pointer_separator + strings.Join(p.referenceTokens, const_pointer_separator) + + return pointerString +} + +// Specific JSON pointer encoding here +// ~0 => ~ +// ~1 => / +// ... and vice versa + +const ( + const_encoded_reference_token_0 = `~0` + const_encoded_reference_token_1 = `~1` + const_decoded_reference_token_0 = `~` + const_decoded_reference_token_1 = `/` +) + +func decodeReferenceToken(token string) string { + step1 := strings.Replace(token, const_encoded_reference_token_1, const_decoded_reference_token_1, -1) + step2 := strings.Replace(step1, const_encoded_reference_token_0, const_decoded_reference_token_0, -1) + return step2 +} + +func encodeReferenceToken(token string) string { + step1 := strings.Replace(token, const_decoded_reference_token_1, const_encoded_reference_token_1, -1) + step2 := strings.Replace(step1, const_decoded_reference_token_0, const_encoded_reference_token_0, -1) + return step2 +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonreference/reference.go b/components/engine/vendor/github.com/xeipuuv/gojsonreference/reference.go new file mode 100644 index 0000000000..d4d2eca0aa --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonreference/reference.go @@ -0,0 +1,141 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonreference +// repository-desc An implementation of JSON Reference - Go language +// +// description Main and unique file. +// +// created 26-02-2013 + +package gojsonreference + +import ( + "errors" + "github.com/xeipuuv/gojsonpointer" + "net/url" + "path/filepath" + "runtime" + "strings" +) + +const ( + const_fragment_char = `#` +) + +func NewJsonReference(jsonReferenceString string) (JsonReference, error) { + + var r JsonReference + err := r.parse(jsonReferenceString) + return r, err + +} + +type JsonReference struct { + referenceUrl *url.URL + referencePointer gojsonpointer.JsonPointer + + HasFullUrl bool + HasUrlPathOnly bool + HasFragmentOnly bool + HasFileScheme bool + HasFullFilePath bool +} + +func (r *JsonReference) GetUrl() *url.URL { + return r.referenceUrl +} + +func (r *JsonReference) GetPointer() *gojsonpointer.JsonPointer { + return &r.referencePointer +} + +func (r *JsonReference) String() string { + + if r.referenceUrl != nil { + return r.referenceUrl.String() + } + + if r.HasFragmentOnly { + return const_fragment_char + r.referencePointer.String() + } + + return r.referencePointer.String() +} + +func (r *JsonReference) IsCanonical() bool { + return (r.HasFileScheme && r.HasFullFilePath) || (!r.HasFileScheme && r.HasFullUrl) +} + +// "Constructor", parses the given string JSON reference +func (r *JsonReference) parse(jsonReferenceString string) (err error) { + + r.referenceUrl, err = url.Parse(jsonReferenceString) + if err != nil { + return + } + refUrl := r.referenceUrl + + if refUrl.Scheme != "" && refUrl.Host != "" { + r.HasFullUrl = true + } else { + if refUrl.Path != "" { + r.HasUrlPathOnly = true + } else if refUrl.RawQuery == "" && refUrl.Fragment != "" { + r.HasFragmentOnly = true + } + } + + r.HasFileScheme = refUrl.Scheme == "file" + if runtime.GOOS == "windows" { + // on Windows, a file URL may have an extra leading slash, and if it + // doesn't then its first component will be treated as the host by the + // Go runtime + if refUrl.Host == "" && strings.HasPrefix(refUrl.Path, "/") { + r.HasFullFilePath = filepath.IsAbs(refUrl.Path[1:]) + } else { + r.HasFullFilePath = filepath.IsAbs(refUrl.Host + refUrl.Path) + } + } else { + r.HasFullFilePath = filepath.IsAbs(refUrl.Path) + } + + // invalid json-pointer error means url has no json-pointer fragment. simply ignore error + r.referencePointer, _ = gojsonpointer.NewJsonPointer(refUrl.Fragment) + + return +} + +// Creates a new reference from a parent and a child +// If the child cannot inherit from the parent, an error is returned +func (r *JsonReference) Inherits(child JsonReference) (*JsonReference, error) { + childUrl := child.GetUrl() + parentUrl := r.GetUrl() + if childUrl == nil { + return nil, errors.New("childUrl is nil!") + } + if parentUrl == nil { + return nil, errors.New("parentUrl is nil!") + } + + ref, err := NewJsonReference(parentUrl.ResolveReference(childUrl).String()) + if err != nil { + return nil, err + } + return &ref, err +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/errors.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/errors.go new file mode 100644 index 0000000000..5146cbbab6 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/errors.go @@ -0,0 +1,242 @@ +package gojsonschema + +import ( + "fmt" + "strings" +) + +type ( + // RequiredError. ErrorDetails: property string + RequiredError struct { + ResultErrorFields + } + + // InvalidTypeError. ErrorDetails: expected, given + InvalidTypeError struct { + ResultErrorFields + } + + // NumberAnyOfError. ErrorDetails: - + NumberAnyOfError struct { + ResultErrorFields + } + + // NumberOneOfError. ErrorDetails: - + NumberOneOfError struct { + ResultErrorFields + } + + // NumberAllOfError. ErrorDetails: - + NumberAllOfError struct { + ResultErrorFields + } + + // NumberNotError. ErrorDetails: - + NumberNotError struct { + ResultErrorFields + } + + // MissingDependencyError. ErrorDetails: dependency + MissingDependencyError struct { + ResultErrorFields + } + + // InternalError. ErrorDetails: error + InternalError struct { + ResultErrorFields + } + + // EnumError. ErrorDetails: allowed + EnumError struct { + ResultErrorFields + } + + // ArrayNoAdditionalItemsError. ErrorDetails: - + ArrayNoAdditionalItemsError struct { + ResultErrorFields + } + + // ArrayMinItemsError. ErrorDetails: min + ArrayMinItemsError struct { + ResultErrorFields + } + + // ArrayMaxItemsError. ErrorDetails: max + ArrayMaxItemsError struct { + ResultErrorFields + } + + // ItemsMustBeUniqueError. ErrorDetails: type + ItemsMustBeUniqueError struct { + ResultErrorFields + } + + // ArrayMinPropertiesError. ErrorDetails: min + ArrayMinPropertiesError struct { + ResultErrorFields + } + + // ArrayMaxPropertiesError. ErrorDetails: max + ArrayMaxPropertiesError struct { + ResultErrorFields + } + + // AdditionalPropertyNotAllowedError. ErrorDetails: property + AdditionalPropertyNotAllowedError struct { + ResultErrorFields + } + + // InvalidPropertyPatternError. ErrorDetails: property, pattern + InvalidPropertyPatternError struct { + ResultErrorFields + } + + // StringLengthGTEError. ErrorDetails: min + StringLengthGTEError struct { + ResultErrorFields + } + + // StringLengthLTEError. ErrorDetails: max + StringLengthLTEError struct { + ResultErrorFields + } + + // DoesNotMatchPatternError. ErrorDetails: pattern + DoesNotMatchPatternError struct { + ResultErrorFields + } + + // DoesNotMatchFormatError. ErrorDetails: format + DoesNotMatchFormatError struct { + ResultErrorFields + } + + // MultipleOfError. ErrorDetails: multiple + MultipleOfError struct { + ResultErrorFields + } + + // NumberGTEError. ErrorDetails: min + NumberGTEError struct { + ResultErrorFields + } + + // NumberGTError. ErrorDetails: min + NumberGTError struct { + ResultErrorFields + } + + // NumberLTEError. ErrorDetails: max + NumberLTEError struct { + ResultErrorFields + } + + // NumberLTError. ErrorDetails: max + NumberLTError struct { + ResultErrorFields + } +) + +// newError takes a ResultError type and sets the type, context, description, details, value, and field +func newError(err ResultError, context *jsonContext, value interface{}, locale locale, details ErrorDetails) { + var t string + var d string + switch err.(type) { + case *RequiredError: + t = "required" + d = locale.Required() + case *InvalidTypeError: + t = "invalid_type" + d = locale.InvalidType() + case *NumberAnyOfError: + t = "number_any_of" + d = locale.NumberAnyOf() + case *NumberOneOfError: + t = "number_one_of" + d = locale.NumberOneOf() + case *NumberAllOfError: + t = "number_all_of" + d = locale.NumberAllOf() + case *NumberNotError: + t = "number_not" + d = locale.NumberNot() + case *MissingDependencyError: + t = "missing_dependency" + d = locale.MissingDependency() + case *InternalError: + t = "internal" + d = locale.Internal() + case *EnumError: + t = "enum" + d = locale.Enum() + case *ArrayNoAdditionalItemsError: + t = "array_no_additional_items" + d = locale.ArrayNoAdditionalItems() + case *ArrayMinItemsError: + t = "array_min_items" + d = locale.ArrayMinItems() + case *ArrayMaxItemsError: + t = "array_max_items" + d = locale.ArrayMaxItems() + case *ItemsMustBeUniqueError: + t = "unique" + d = locale.Unique() + case *ArrayMinPropertiesError: + t = "array_min_properties" + d = locale.ArrayMinProperties() + case *ArrayMaxPropertiesError: + t = "array_max_properties" + d = locale.ArrayMaxProperties() + case *AdditionalPropertyNotAllowedError: + t = "additional_property_not_allowed" + d = locale.AdditionalPropertyNotAllowed() + case *InvalidPropertyPatternError: + t = "invalid_property_pattern" + d = locale.InvalidPropertyPattern() + case *StringLengthGTEError: + t = "string_gte" + d = locale.StringGTE() + case *StringLengthLTEError: + t = "string_lte" + d = locale.StringLTE() + case *DoesNotMatchPatternError: + t = "pattern" + d = locale.DoesNotMatchPattern() + case *DoesNotMatchFormatError: + t = "format" + d = locale.DoesNotMatchFormat() + case *MultipleOfError: + t = "multiple_of" + d = locale.MultipleOf() + case *NumberGTEError: + t = "number_gte" + d = locale.NumberGTE() + case *NumberGTError: + t = "number_gt" + d = locale.NumberGT() + case *NumberLTEError: + t = "number_lte" + d = locale.NumberLTE() + case *NumberLTError: + t = "number_lt" + d = locale.NumberLT() + } + + err.SetType(t) + err.SetContext(context) + err.SetValue(value) + err.SetDetails(details) + details["field"] = err.Field() + err.SetDescription(formatErrorDescription(d, details)) +} + +// formatErrorDescription takes a string in this format: %field% is required +// and converts it to a string with replacements. The fields come from +// the ErrorDetails struct and vary for each type of error. +func formatErrorDescription(s string, details ErrorDetails) string { + for name, val := range details { + s = strings.Replace(s, "%"+strings.ToLower(name)+"%", fmt.Sprintf("%v", val), -1) + } + + return s +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/format_checkers.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/format_checkers.go new file mode 100644 index 0000000000..b91c360a81 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/format_checkers.go @@ -0,0 +1,178 @@ +package gojsonschema + +import ( + "net" + "net/url" + "reflect" + "regexp" + "strings" + "time" +) + +type ( + // FormatChecker is the interface all formatters added to FormatCheckerChain must implement + FormatChecker interface { + IsFormat(input string) bool + } + + // FormatCheckerChain holds the formatters + FormatCheckerChain struct { + formatters map[string]FormatChecker + } + + // EmailFormatter verifies email address formats + EmailFormatChecker struct{} + + // IPV4FormatChecker verifies IP addresses in the ipv4 format + IPV4FormatChecker struct{} + + // IPV6FormatChecker verifies IP addresses in the ipv6 format + IPV6FormatChecker struct{} + + // DateTimeFormatChecker verifies date/time formats per RFC3339 5.6 + // + // Valid formats: + // Partial Time: HH:MM:SS + // Full Date: YYYY-MM-DD + // Full Time: HH:MM:SSZ-07:00 + // Date Time: YYYY-MM-DDTHH:MM:SSZ-0700 + // + // Where + // YYYY = 4DIGIT year + // MM = 2DIGIT month ; 01-12 + // DD = 2DIGIT day-month ; 01-28, 01-29, 01-30, 01-31 based on month/year + // HH = 2DIGIT hour ; 00-23 + // MM = 2DIGIT ; 00-59 + // SS = 2DIGIT ; 00-58, 00-60 based on leap second rules + // T = Literal + // Z = Literal + // + // Note: Nanoseconds are also suported in all formats + // + // http://tools.ietf.org/html/rfc3339#section-5.6 + DateTimeFormatChecker struct{} + + // URIFormatCheckers validates a URI with a valid Scheme per RFC3986 + URIFormatChecker struct{} + + // HostnameFormatChecker validates a hostname is in the correct format + HostnameFormatChecker struct{} + + // UUIDFormatChecker validates a UUID is in the correct format + UUIDFormatChecker struct{} +) + +var ( + // Formatters holds the valid formatters, and is a public variable + // so library users can add custom formatters + FormatCheckers = FormatCheckerChain{ + formatters: map[string]FormatChecker{ + "date-time": DateTimeFormatChecker{}, + "hostname": HostnameFormatChecker{}, + "email": EmailFormatChecker{}, + "ipv4": IPV4FormatChecker{}, + "ipv6": IPV6FormatChecker{}, + "uri": URIFormatChecker{}, + "uuid": UUIDFormatChecker{}, + }, + } + + // Regex credit: https://github.com/asaskevich/govalidator + rxEmail = regexp.MustCompile("^(((([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+(\\.([a-zA-Z]|\\d|[!#\\$%&'\\*\\+\\-\\/=\\?\\^_`{\\|}~]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])+)*)|((\\x22)((((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(([\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x7f]|\\x21|[\\x23-\\x5b]|[\\x5d-\\x7e]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(\\([\\x01-\\x09\\x0b\\x0c\\x0d-\\x7f]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}]))))*(((\\x20|\\x09)*(\\x0d\\x0a))?(\\x20|\\x09)+)?(\\x22)))@((([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|\\d|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.)+(([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])|(([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])([a-zA-Z]|\\d|-|\\.|_|~|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])*([a-zA-Z]|[\\x{00A0}-\\x{D7FF}\\x{F900}-\\x{FDCF}\\x{FDF0}-\\x{FFEF}])))\\.?$") + + // Regex credit: https://www.socketloop.com/tutorials/golang-validate-hostname + rxHostname = regexp.MustCompile(`^([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9])(\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]{0,61}[a-zA-Z0-9]))*$`) + + rxUUID = regexp.MustCompile("^[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}$") +) + +// Add adds a FormatChecker to the FormatCheckerChain +// The name used will be the value used for the format key in your json schema +func (c *FormatCheckerChain) Add(name string, f FormatChecker) *FormatCheckerChain { + c.formatters[name] = f + + return c +} + +// Remove deletes a FormatChecker from the FormatCheckerChain (if it exists) +func (c *FormatCheckerChain) Remove(name string) *FormatCheckerChain { + delete(c.formatters, name) + + return c +} + +// Has checks to see if the FormatCheckerChain holds a FormatChecker with the given name +func (c *FormatCheckerChain) Has(name string) bool { + _, ok := c.formatters[name] + + return ok +} + +// IsFormat will check an input against a FormatChecker with the given name +// to see if it is the correct format +func (c *FormatCheckerChain) IsFormat(name string, input interface{}) bool { + f, ok := c.formatters[name] + + if !ok { + return false + } + + if !isKind(input, reflect.String) { + return false + } + + inputString := input.(string) + + return f.IsFormat(inputString) +} + +func (f EmailFormatChecker) IsFormat(input string) bool { + return rxEmail.MatchString(input) +} + +// Credit: https://github.com/asaskevich/govalidator +func (f IPV4FormatChecker) IsFormat(input string) bool { + ip := net.ParseIP(input) + return ip != nil && strings.Contains(input, ".") +} + +// Credit: https://github.com/asaskevich/govalidator +func (f IPV6FormatChecker) IsFormat(input string) bool { + ip := net.ParseIP(input) + return ip != nil && strings.Contains(input, ":") +} + +func (f DateTimeFormatChecker) IsFormat(input string) bool { + formats := []string{ + "15:04:05", + "15:04:05Z07:00", + "2006-01-02", + time.RFC3339, + time.RFC3339Nano, + } + + for _, format := range formats { + if _, err := time.Parse(format, input); err == nil { + return true + } + } + + return false +} + +func (f URIFormatChecker) IsFormat(input string) bool { + u, err := url.Parse(input) + if err != nil || u.Scheme == "" { + return false + } + + return true +} + +func (f HostnameFormatChecker) IsFormat(input string) bool { + return rxHostname.MatchString(input) && len(input) < 256 +} + +func (f UUIDFormatChecker) IsFormat(input string) bool { + return rxUUID.MatchString(input) +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/internalLog.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/internalLog.go new file mode 100644 index 0000000000..4ef7a8d03e --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/internalLog.go @@ -0,0 +1,37 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Very simple log wrapper. +// Used for debugging/testing purposes. +// +// created 01-01-2015 + +package gojsonschema + +import ( + "log" +) + +const internalLogEnabled = false + +func internalLog(format string, v ...interface{}) { + log.Printf(format, v...) +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/jsonContext.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/jsonContext.go new file mode 100644 index 0000000000..fcc8d9d6f1 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/jsonContext.go @@ -0,0 +1,72 @@ +// Copyright 2013 MongoDB, Inc. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author tolsen +// author-github https://github.com/tolsen +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Implements a persistent (immutable w/ shared structure) singly-linked list of strings for the purpose of storing a json context +// +// created 04-09-2013 + +package gojsonschema + +import "bytes" + +// jsonContext implements a persistent linked-list of strings +type jsonContext struct { + head string + tail *jsonContext +} + +func newJsonContext(head string, tail *jsonContext) *jsonContext { + return &jsonContext{head, tail} +} + +// String displays the context in reverse. +// This plays well with the data structure's persistent nature with +// Cons and a json document's tree structure. +func (c *jsonContext) String(del ...string) string { + byteArr := make([]byte, 0, c.stringLen()) + buf := bytes.NewBuffer(byteArr) + c.writeStringToBuffer(buf, del) + + return buf.String() +} + +func (c *jsonContext) stringLen() int { + length := 0 + if c.tail != nil { + length = c.tail.stringLen() + 1 // add 1 for "." + } + + length += len(c.head) + return length +} + +func (c *jsonContext) writeStringToBuffer(buf *bytes.Buffer, del []string) { + if c.tail != nil { + c.tail.writeStringToBuffer(buf, del) + + if len(del) > 0 { + buf.WriteString(del[0]) + } else { + buf.WriteString(".") + } + } + + buf.WriteString(c.head) +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/jsonLoader.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/jsonLoader.go new file mode 100644 index 0000000000..a9458a8e5d --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/jsonLoader.go @@ -0,0 +1,286 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Different strategies to load JSON files. +// Includes References (file and HTTP), JSON strings and Go types. +// +// created 01-02-2015 + +package gojsonschema + +import ( + "bytes" + "encoding/json" + "errors" + "io" + "io/ioutil" + "net/http" + "path/filepath" + "runtime" + "strings" + + "github.com/xeipuuv/gojsonreference" +) + +// JSON loader interface + +type JSONLoader interface { + jsonSource() interface{} + loadJSON() (interface{}, error) + loadSchema() (*Schema, error) +} + +// JSON Reference loader +// references are used to load JSONs from files and HTTP + +type jsonReferenceLoader struct { + source string +} + +func (l *jsonReferenceLoader) jsonSource() interface{} { + return l.source +} + +func NewReferenceLoader(source string) *jsonReferenceLoader { + return &jsonReferenceLoader{source: source} +} + +func (l *jsonReferenceLoader) loadJSON() (interface{}, error) { + + var err error + + reference, err := gojsonreference.NewJsonReference(l.jsonSource().(string)) + if err != nil { + return nil, err + } + + refToUrl := reference + refToUrl.GetUrl().Fragment = "" + + var document interface{} + + if reference.HasFileScheme { + + filename := strings.Replace(refToUrl.String(), "file://", "", -1) + if runtime.GOOS == "windows" { + // on Windows, a file URL may have an extra leading slash, use slashes + // instead of backslashes, and have spaces escaped + if strings.HasPrefix(filename, "/") { + filename = filename[1:] + } + filename = filepath.FromSlash(filename) + filename = strings.Replace(filename, "%20", " ", -1) + } + + document, err = l.loadFromFile(filename) + if err != nil { + return nil, err + } + + } else { + + document, err = l.loadFromHTTP(refToUrl.String()) + if err != nil { + return nil, err + } + + } + + return document, nil + +} + +func (l *jsonReferenceLoader) loadSchema() (*Schema, error) { + + var err error + + d := Schema{} + d.pool = newSchemaPool() + d.referencePool = newSchemaReferencePool() + + d.documentReference, err = gojsonreference.NewJsonReference(l.jsonSource().(string)) + if err != nil { + return nil, err + } + + spd, err := d.pool.GetDocument(d.documentReference) + if err != nil { + return nil, err + } + + err = d.parse(spd.Document) + if err != nil { + return nil, err + } + + return &d, nil + +} + +func (l *jsonReferenceLoader) loadFromHTTP(address string) (interface{}, error) { + + resp, err := http.Get(address) + if err != nil { + return nil, err + } + + // must return HTTP Status 200 OK + if resp.StatusCode != http.StatusOK { + return nil, errors.New(formatErrorDescription(Locale.httpBadStatus(), ErrorDetails{"status": resp.Status})) + } + + bodyBuff, err := ioutil.ReadAll(resp.Body) + if err != nil { + return nil, err + } + + return decodeJsonUsingNumber(bytes.NewReader(bodyBuff)) + +} + +func (l *jsonReferenceLoader) loadFromFile(path string) (interface{}, error) { + + bodyBuff, err := ioutil.ReadFile(path) + if err != nil { + return nil, err + } + + return decodeJsonUsingNumber(bytes.NewReader(bodyBuff)) + +} + +// JSON string loader + +type jsonStringLoader struct { + source string +} + +func (l *jsonStringLoader) jsonSource() interface{} { + return l.source +} + +func NewStringLoader(source string) *jsonStringLoader { + return &jsonStringLoader{source: source} +} + +func (l *jsonStringLoader) loadJSON() (interface{}, error) { + + return decodeJsonUsingNumber(strings.NewReader(l.jsonSource().(string))) + +} + +func (l *jsonStringLoader) loadSchema() (*Schema, error) { + + var err error + + document, err := l.loadJSON() + if err != nil { + return nil, err + } + + d := Schema{} + d.pool = newSchemaPool() + d.referencePool = newSchemaReferencePool() + d.documentReference, err = gojsonreference.NewJsonReference("#") + d.pool.SetStandaloneDocument(document) + if err != nil { + return nil, err + } + + err = d.parse(document) + if err != nil { + return nil, err + } + + return &d, nil + +} + +// JSON Go (types) loader +// used to load JSONs from the code as maps, interface{}, structs ... + +type jsonGoLoader struct { + source interface{} +} + +func (l *jsonGoLoader) jsonSource() interface{} { + return l.source +} + +func NewGoLoader(source interface{}) *jsonGoLoader { + return &jsonGoLoader{source: source} +} + +func (l *jsonGoLoader) loadJSON() (interface{}, error) { + + // convert it to a compliant JSON first to avoid types "mismatches" + + jsonBytes, err := json.Marshal(l.jsonSource()) + if err != nil { + return nil, err + } + + return decodeJsonUsingNumber(bytes.NewReader(jsonBytes)) + +} + +func (l *jsonGoLoader) loadSchema() (*Schema, error) { + + var err error + + document, err := l.loadJSON() + if err != nil { + return nil, err + } + + d := Schema{} + d.pool = newSchemaPool() + d.referencePool = newSchemaReferencePool() + d.documentReference, err = gojsonreference.NewJsonReference("#") + d.pool.SetStandaloneDocument(document) + if err != nil { + return nil, err + } + + err = d.parse(document) + if err != nil { + return nil, err + } + + return &d, nil + +} + +func decodeJsonUsingNumber(r io.Reader) (interface{}, error) { + + var document interface{} + + decoder := json.NewDecoder(r) + decoder.UseNumber() + + err := decoder.Decode(&document) + if err != nil { + return nil, err + } + + return document, nil + +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/locales.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/locales.go new file mode 100644 index 0000000000..de05d60df3 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/locales.go @@ -0,0 +1,275 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Contains const string and messages. +// +// created 01-01-2015 + +package gojsonschema + +type ( + // locale is an interface for definining custom error strings + locale interface { + Required() string + InvalidType() string + NumberAnyOf() string + NumberOneOf() string + NumberAllOf() string + NumberNot() string + MissingDependency() string + Internal() string + Enum() string + ArrayNoAdditionalItems() string + ArrayMinItems() string + ArrayMaxItems() string + Unique() string + ArrayMinProperties() string + ArrayMaxProperties() string + AdditionalPropertyNotAllowed() string + InvalidPropertyPattern() string + StringGTE() string + StringLTE() string + DoesNotMatchPattern() string + DoesNotMatchFormat() string + MultipleOf() string + NumberGTE() string + NumberGT() string + NumberLTE() string + NumberLT() string + + // Schema validations + RegexPattern() string + GreaterThanZero() string + MustBeOfA() string + MustBeOfAn() string + CannotBeUsedWithout() string + CannotBeGT() string + MustBeOfType() string + MustBeValidRegex() string + MustBeValidFormat() string + MustBeGTEZero() string + KeyCannotBeGreaterThan() string + KeyItemsMustBeOfType() string + KeyItemsMustBeUnique() string + ReferenceMustBeCanonical() string + NotAValidType() string + Duplicated() string + httpBadStatus() string + + // ErrorFormat + ErrorFormat() string + } + + // DefaultLocale is the default locale for this package + DefaultLocale struct{} +) + +func (l DefaultLocale) Required() string { + return `%property% is required` +} + +func (l DefaultLocale) InvalidType() string { + return `Invalid type. Expected: %expected%, given: %given%` +} + +func (l DefaultLocale) NumberAnyOf() string { + return `Must validate at least one schema (anyOf)` +} + +func (l DefaultLocale) NumberOneOf() string { + return `Must validate one and only one schema (oneOf)` +} + +func (l DefaultLocale) NumberAllOf() string { + return `Must validate all the schemas (allOf)` +} + +func (l DefaultLocale) NumberNot() string { + return `Must not validate the schema (not)` +} + +func (l DefaultLocale) MissingDependency() string { + return `Has a dependency on %dependency%` +} + +func (l DefaultLocale) Internal() string { + return `Internal Error %error%` +} + +func (l DefaultLocale) Enum() string { + return `%field% must be one of the following: %allowed%` +} + +func (l DefaultLocale) ArrayNoAdditionalItems() string { + return `No additional items allowed on array` +} + +func (l DefaultLocale) ArrayMinItems() string { + return `Array must have at least %min% items` +} + +func (l DefaultLocale) ArrayMaxItems() string { + return `Array must have at most %max% items` +} + +func (l DefaultLocale) Unique() string { + return `%type% items must be unique` +} + +func (l DefaultLocale) ArrayMinProperties() string { + return `Must have at least %min% properties` +} + +func (l DefaultLocale) ArrayMaxProperties() string { + return `Must have at most %max% properties` +} + +func (l DefaultLocale) AdditionalPropertyNotAllowed() string { + return `Additional property %property% is not allowed` +} + +func (l DefaultLocale) InvalidPropertyPattern() string { + return `Property "%property%" does not match pattern %pattern%` +} + +func (l DefaultLocale) StringGTE() string { + return `String length must be greater than or equal to %min%` +} + +func (l DefaultLocale) StringLTE() string { + return `String length must be less than or equal to %max%` +} + +func (l DefaultLocale) DoesNotMatchPattern() string { + return `Does not match pattern '%pattern%'` +} + +func (l DefaultLocale) DoesNotMatchFormat() string { + return `Does not match format '%format%'` +} + +func (l DefaultLocale) MultipleOf() string { + return `Must be a multiple of %multiple%` +} + +func (l DefaultLocale) NumberGTE() string { + return `Must be greater than or equal to %min%` +} + +func (l DefaultLocale) NumberGT() string { + return `Must be greater than %min%` +} + +func (l DefaultLocale) NumberLTE() string { + return `Must be less than or equal to %max%` +} + +func (l DefaultLocale) NumberLT() string { + return `Must be less than %max%` +} + +// Schema validators +func (l DefaultLocale) RegexPattern() string { + return `Invalid regex pattern '%pattern%'` +} + +func (l DefaultLocale) GreaterThanZero() string { + return `%number% must be strictly greater than 0` +} + +func (l DefaultLocale) MustBeOfA() string { + return `%x% must be of a %y%` +} + +func (l DefaultLocale) MustBeOfAn() string { + return `%x% must be of an %y%` +} + +func (l DefaultLocale) CannotBeUsedWithout() string { + return `%x% cannot be used without %y%` +} + +func (l DefaultLocale) CannotBeGT() string { + return `%x% cannot be greater than %y%` +} + +func (l DefaultLocale) MustBeOfType() string { + return `%key% must be of type %type%` +} + +func (l DefaultLocale) MustBeValidRegex() string { + return `%key% must be a valid regex` +} + +func (l DefaultLocale) MustBeValidFormat() string { + return `%key% must be a valid format %given%` +} + +func (l DefaultLocale) MustBeGTEZero() string { + return `%key% must be greater than or equal to 0` +} + +func (l DefaultLocale) KeyCannotBeGreaterThan() string { + return `%key% cannot be greater than %y%` +} + +func (l DefaultLocale) KeyItemsMustBeOfType() string { + return `%key% items must be %type%` +} + +func (l DefaultLocale) KeyItemsMustBeUnique() string { + return `%key% items must be unique` +} + +func (l DefaultLocale) ReferenceMustBeCanonical() string { + return `Reference %reference% must be canonical` +} + +func (l DefaultLocale) NotAValidType() string { + return `%type% is not a valid type -- ` +} + +func (l DefaultLocale) Duplicated() string { + return `%type% type is duplicated` +} + +func (l DefaultLocale) httpBadStatus() string { + return `Could not read schema from HTTP, response status is %status%` +} + +// Replacement options: field, description, context, value +func (l DefaultLocale) ErrorFormat() string { + return `%field%: %description%` +} + +const ( + STRING_NUMBER = "number" + STRING_ARRAY_OF_STRINGS = "array of strings" + STRING_ARRAY_OF_SCHEMAS = "array of schemas" + STRING_SCHEMA = "schema" + STRING_SCHEMA_OR_ARRAY_OF_STRINGS = "schema or array of strings" + STRING_PROPERTIES = "properties" + STRING_DEPENDENCY = "dependency" + STRING_PROPERTY = "property" + STRING_UNDEFINED = "undefined" + STRING_CONTEXT_ROOT = "(root)" + STRING_ROOT_SCHEMA_PROPERTY = "(root)" +) diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/result.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/result.go new file mode 100644 index 0000000000..c6d337587b --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/result.go @@ -0,0 +1,171 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Result and ResultError implementations. +// +// created 01-01-2015 + +package gojsonschema + +import ( + "fmt" + "strings" +) + +type ( + // ErrorDetails is a map of details specific to each error. + // While the values will vary, every error will contain a "field" value + ErrorDetails map[string]interface{} + + // ResultError is the interface that library errors must implement + ResultError interface { + Field() string + SetType(string) + Type() string + SetContext(*jsonContext) + Context() *jsonContext + SetDescription(string) + Description() string + SetValue(interface{}) + Value() interface{} + SetDetails(ErrorDetails) + Details() ErrorDetails + } + + // ResultErrorFields holds the fields for each ResultError implementation. + // ResultErrorFields implements the ResultError interface, so custom errors + // can be defined by just embedding this type + ResultErrorFields struct { + errorType string // A string with the type of error (i.e. invalid_type) + context *jsonContext // Tree like notation of the part that failed the validation. ex (root).a.b ... + description string // A human readable error message + value interface{} // Value given by the JSON file that is the source of the error + details ErrorDetails + } + + Result struct { + errors []ResultError + // Scores how well the validation matched. Useful in generating + // better error messages for anyOf and oneOf. + score int + } +) + +// Field outputs the field name without the root context +// i.e. firstName or person.firstName instead of (root).firstName or (root).person.firstName +func (v *ResultErrorFields) Field() string { + if p, ok := v.Details()["property"]; ok { + if str, isString := p.(string); isString { + return str + } + } + + return strings.TrimPrefix(v.context.String(), STRING_ROOT_SCHEMA_PROPERTY+".") +} + +func (v *ResultErrorFields) SetType(errorType string) { + v.errorType = errorType +} + +func (v *ResultErrorFields) Type() string { + return v.errorType +} + +func (v *ResultErrorFields) SetContext(context *jsonContext) { + v.context = context +} + +func (v *ResultErrorFields) Context() *jsonContext { + return v.context +} + +func (v *ResultErrorFields) SetDescription(description string) { + v.description = description +} + +func (v *ResultErrorFields) Description() string { + return v.description +} + +func (v *ResultErrorFields) SetValue(value interface{}) { + v.value = value +} + +func (v *ResultErrorFields) Value() interface{} { + return v.value +} + +func (v *ResultErrorFields) SetDetails(details ErrorDetails) { + v.details = details +} + +func (v *ResultErrorFields) Details() ErrorDetails { + return v.details +} + +func (v ResultErrorFields) String() string { + // as a fallback, the value is displayed go style + valueString := fmt.Sprintf("%v", v.value) + + // marshal the go value value to json + if v.value == nil { + valueString = TYPE_NULL + } else { + if vs, err := marshalToJsonString(v.value); err == nil { + if vs == nil { + valueString = TYPE_NULL + } else { + valueString = *vs + } + } + } + + return formatErrorDescription(Locale.ErrorFormat(), ErrorDetails{ + "context": v.context.String(), + "description": v.description, + "value": valueString, + "field": v.Field(), + }) +} + +func (v *Result) Valid() bool { + return len(v.errors) == 0 +} + +func (v *Result) Errors() []ResultError { + return v.errors +} + +func (v *Result) addError(err ResultError, context *jsonContext, value interface{}, details ErrorDetails) { + newError(err, context, value, Locale, details) + v.errors = append(v.errors, err) + v.score -= 2 // results in a net -1 when added to the +1 we get at the end of the validation function +} + +// Used to copy errors from a sub-schema to the main one +func (v *Result) mergeErrors(otherResult *Result) { + v.errors = append(v.errors, otherResult.Errors()...) + v.score += otherResult.score +} + +func (v *Result) incrementScore() { + v.score++ +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/schema.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schema.go new file mode 100644 index 0000000000..577c7863f3 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schema.go @@ -0,0 +1,908 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Defines Schema, the main entry to every subSchema. +// Contains the parsing logic and error checking. +// +// created 26-02-2013 + +package gojsonschema + +import ( + // "encoding/json" + "errors" + "reflect" + "regexp" + + "github.com/xeipuuv/gojsonreference" +) + +var ( + // Locale is the default locale to use + // Library users can overwrite with their own implementation + Locale locale = DefaultLocale{} +) + +func NewSchema(l JSONLoader) (*Schema, error) { + return l.loadSchema() +} + +type Schema struct { + documentReference gojsonreference.JsonReference + rootSchema *subSchema + pool *schemaPool + referencePool *schemaReferencePool +} + +func (d *Schema) parse(document interface{}) error { + d.rootSchema = &subSchema{property: STRING_ROOT_SCHEMA_PROPERTY} + return d.parseSchema(document, d.rootSchema) +} + +func (d *Schema) SetRootSchemaName(name string) { + d.rootSchema.property = name +} + +// Parses a subSchema +// +// Pretty long function ( sorry :) )... but pretty straight forward, repetitive and boring +// Not much magic involved here, most of the job is to validate the key names and their values, +// then the values are copied into subSchema struct +// +func (d *Schema) parseSchema(documentNode interface{}, currentSchema *subSchema) error { + + if !isKind(documentNode, reflect.Map) { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_OBJECT, + "given": STRING_SCHEMA, + }, + )) + } + + m := documentNode.(map[string]interface{}) + + if currentSchema == d.rootSchema { + currentSchema.ref = &d.documentReference + } + + // $subSchema + if existsMapKey(m, KEY_SCHEMA) { + if !isKind(m[KEY_SCHEMA], reflect.String) { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING, + "given": KEY_SCHEMA, + }, + )) + } + schemaRef := m[KEY_SCHEMA].(string) + schemaReference, err := gojsonreference.NewJsonReference(schemaRef) + currentSchema.subSchema = &schemaReference + if err != nil { + return err + } + } + + // $ref + if existsMapKey(m, KEY_REF) && !isKind(m[KEY_REF], reflect.String) { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING, + "given": KEY_REF, + }, + )) + } + if k, ok := m[KEY_REF].(string); ok { + + if sch, ok := d.referencePool.Get(currentSchema.ref.String() + k); ok { + + currentSchema.refSchema = sch + + } else { + + var err error + err = d.parseReference(documentNode, currentSchema, k) + if err != nil { + return err + } + + return nil + } + } + + // definitions + if existsMapKey(m, KEY_DEFINITIONS) { + if isKind(m[KEY_DEFINITIONS], reflect.Map) { + currentSchema.definitions = make(map[string]*subSchema) + for dk, dv := range m[KEY_DEFINITIONS].(map[string]interface{}) { + if isKind(dv, reflect.Map) { + newSchema := &subSchema{property: KEY_DEFINITIONS, parent: currentSchema, ref: currentSchema.ref} + currentSchema.definitions[dk] = newSchema + err := d.parseSchema(dv, newSchema) + if err != nil { + return errors.New(err.Error()) + } + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": STRING_ARRAY_OF_SCHEMAS, + "given": KEY_DEFINITIONS, + }, + )) + } + } + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": STRING_ARRAY_OF_SCHEMAS, + "given": KEY_DEFINITIONS, + }, + )) + } + + } + + // id + if existsMapKey(m, KEY_ID) && !isKind(m[KEY_ID], reflect.String) { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING, + "given": KEY_ID, + }, + )) + } + if k, ok := m[KEY_ID].(string); ok { + currentSchema.id = &k + } + + // title + if existsMapKey(m, KEY_TITLE) && !isKind(m[KEY_TITLE], reflect.String) { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING, + "given": KEY_TITLE, + }, + )) + } + if k, ok := m[KEY_TITLE].(string); ok { + currentSchema.title = &k + } + + // description + if existsMapKey(m, KEY_DESCRIPTION) && !isKind(m[KEY_DESCRIPTION], reflect.String) { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING, + "given": KEY_DESCRIPTION, + }, + )) + } + if k, ok := m[KEY_DESCRIPTION].(string); ok { + currentSchema.description = &k + } + + // type + if existsMapKey(m, KEY_TYPE) { + if isKind(m[KEY_TYPE], reflect.String) { + if k, ok := m[KEY_TYPE].(string); ok { + err := currentSchema.types.Add(k) + if err != nil { + return err + } + } + } else { + if isKind(m[KEY_TYPE], reflect.Slice) { + arrayOfTypes := m[KEY_TYPE].([]interface{}) + for _, typeInArray := range arrayOfTypes { + if reflect.ValueOf(typeInArray).Kind() != reflect.String { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING + "/" + STRING_ARRAY_OF_STRINGS, + "given": KEY_TYPE, + }, + )) + } else { + currentSchema.types.Add(typeInArray.(string)) + } + } + + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_STRING + "/" + STRING_ARRAY_OF_STRINGS, + "given": KEY_TYPE, + }, + )) + } + } + } + + // properties + if existsMapKey(m, KEY_PROPERTIES) { + err := d.parseProperties(m[KEY_PROPERTIES], currentSchema) + if err != nil { + return err + } + } + + // additionalProperties + if existsMapKey(m, KEY_ADDITIONAL_PROPERTIES) { + if isKind(m[KEY_ADDITIONAL_PROPERTIES], reflect.Bool) { + currentSchema.additionalProperties = m[KEY_ADDITIONAL_PROPERTIES].(bool) + } else if isKind(m[KEY_ADDITIONAL_PROPERTIES], reflect.Map) { + newSchema := &subSchema{property: KEY_ADDITIONAL_PROPERTIES, parent: currentSchema, ref: currentSchema.ref} + currentSchema.additionalProperties = newSchema + err := d.parseSchema(m[KEY_ADDITIONAL_PROPERTIES], newSchema) + if err != nil { + return errors.New(err.Error()) + } + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_BOOLEAN + "/" + STRING_SCHEMA, + "given": KEY_ADDITIONAL_PROPERTIES, + }, + )) + } + } + + // patternProperties + if existsMapKey(m, KEY_PATTERN_PROPERTIES) { + if isKind(m[KEY_PATTERN_PROPERTIES], reflect.Map) { + patternPropertiesMap := m[KEY_PATTERN_PROPERTIES].(map[string]interface{}) + if len(patternPropertiesMap) > 0 { + currentSchema.patternProperties = make(map[string]*subSchema) + for k, v := range patternPropertiesMap { + _, err := regexp.MatchString(k, "") + if err != nil { + return errors.New(formatErrorDescription( + Locale.RegexPattern(), + ErrorDetails{"pattern": k}, + )) + } + newSchema := &subSchema{property: k, parent: currentSchema, ref: currentSchema.ref} + err = d.parseSchema(v, newSchema) + if err != nil { + return errors.New(err.Error()) + } + currentSchema.patternProperties[k] = newSchema + } + } + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": STRING_SCHEMA, + "given": KEY_PATTERN_PROPERTIES, + }, + )) + } + } + + // dependencies + if existsMapKey(m, KEY_DEPENDENCIES) { + err := d.parseDependencies(m[KEY_DEPENDENCIES], currentSchema) + if err != nil { + return err + } + } + + // items + if existsMapKey(m, KEY_ITEMS) { + if isKind(m[KEY_ITEMS], reflect.Slice) { + for _, itemElement := range m[KEY_ITEMS].([]interface{}) { + if isKind(itemElement, reflect.Map) { + newSchema := &subSchema{parent: currentSchema, property: KEY_ITEMS} + newSchema.ref = currentSchema.ref + currentSchema.AddItemsChild(newSchema) + err := d.parseSchema(itemElement, newSchema) + if err != nil { + return err + } + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": STRING_SCHEMA + "/" + STRING_ARRAY_OF_SCHEMAS, + "given": KEY_ITEMS, + }, + )) + } + currentSchema.itemsChildrenIsSingleSchema = false + } + } else if isKind(m[KEY_ITEMS], reflect.Map) { + newSchema := &subSchema{parent: currentSchema, property: KEY_ITEMS} + newSchema.ref = currentSchema.ref + currentSchema.AddItemsChild(newSchema) + err := d.parseSchema(m[KEY_ITEMS], newSchema) + if err != nil { + return err + } + currentSchema.itemsChildrenIsSingleSchema = true + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": STRING_SCHEMA + "/" + STRING_ARRAY_OF_SCHEMAS, + "given": KEY_ITEMS, + }, + )) + } + } + + // additionalItems + if existsMapKey(m, KEY_ADDITIONAL_ITEMS) { + if isKind(m[KEY_ADDITIONAL_ITEMS], reflect.Bool) { + currentSchema.additionalItems = m[KEY_ADDITIONAL_ITEMS].(bool) + } else if isKind(m[KEY_ADDITIONAL_ITEMS], reflect.Map) { + newSchema := &subSchema{property: KEY_ADDITIONAL_ITEMS, parent: currentSchema, ref: currentSchema.ref} + currentSchema.additionalItems = newSchema + err := d.parseSchema(m[KEY_ADDITIONAL_ITEMS], newSchema) + if err != nil { + return errors.New(err.Error()) + } + } else { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": TYPE_BOOLEAN + "/" + STRING_SCHEMA, + "given": KEY_ADDITIONAL_ITEMS, + }, + )) + } + } + + // validation : number / integer + + if existsMapKey(m, KEY_MULTIPLE_OF) { + multipleOfValue := mustBeNumber(m[KEY_MULTIPLE_OF]) + if multipleOfValue == nil { + return errors.New(formatErrorDescription( + Locale.InvalidType(), + ErrorDetails{ + "expected": STRING_NUMBER, + "given": KEY_MULTIPLE_OF, + }, + )) + } + if *multipleOfValue <= 0 { + return errors.New(formatErrorDescription( + Locale.GreaterThanZero(), + ErrorDetails{"number": KEY_MULTIPLE_OF}, + )) + } + currentSchema.multipleOf = multipleOfValue + } + + if existsMapKey(m, KEY_MINIMUM) { + minimumValue := mustBeNumber(m[KEY_MINIMUM]) + if minimumValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfA(), + ErrorDetails{"x": KEY_MINIMUM, "y": STRING_NUMBER}, + )) + } + currentSchema.minimum = minimumValue + } + + if existsMapKey(m, KEY_EXCLUSIVE_MINIMUM) { + if isKind(m[KEY_EXCLUSIVE_MINIMUM], reflect.Bool) { + if currentSchema.minimum == nil { + return errors.New(formatErrorDescription( + Locale.CannotBeUsedWithout(), + ErrorDetails{"x": KEY_EXCLUSIVE_MINIMUM, "y": KEY_MINIMUM}, + )) + } + exclusiveMinimumValue := m[KEY_EXCLUSIVE_MINIMUM].(bool) + currentSchema.exclusiveMinimum = exclusiveMinimumValue + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfA(), + ErrorDetails{"x": KEY_EXCLUSIVE_MINIMUM, "y": TYPE_BOOLEAN}, + )) + } + } + + if existsMapKey(m, KEY_MAXIMUM) { + maximumValue := mustBeNumber(m[KEY_MAXIMUM]) + if maximumValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfA(), + ErrorDetails{"x": KEY_MAXIMUM, "y": STRING_NUMBER}, + )) + } + currentSchema.maximum = maximumValue + } + + if existsMapKey(m, KEY_EXCLUSIVE_MAXIMUM) { + if isKind(m[KEY_EXCLUSIVE_MAXIMUM], reflect.Bool) { + if currentSchema.maximum == nil { + return errors.New(formatErrorDescription( + Locale.CannotBeUsedWithout(), + ErrorDetails{"x": KEY_EXCLUSIVE_MAXIMUM, "y": KEY_MAXIMUM}, + )) + } + exclusiveMaximumValue := m[KEY_EXCLUSIVE_MAXIMUM].(bool) + currentSchema.exclusiveMaximum = exclusiveMaximumValue + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfA(), + ErrorDetails{"x": KEY_EXCLUSIVE_MAXIMUM, "y": STRING_NUMBER}, + )) + } + } + + if currentSchema.minimum != nil && currentSchema.maximum != nil { + if *currentSchema.minimum > *currentSchema.maximum { + return errors.New(formatErrorDescription( + Locale.CannotBeGT(), + ErrorDetails{"x": KEY_MINIMUM, "y": KEY_MAXIMUM}, + )) + } + } + + // validation : string + + if existsMapKey(m, KEY_MIN_LENGTH) { + minLengthIntegerValue := mustBeInteger(m[KEY_MIN_LENGTH]) + if minLengthIntegerValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_MIN_LENGTH, "y": TYPE_INTEGER}, + )) + } + if *minLengthIntegerValue < 0 { + return errors.New(formatErrorDescription( + Locale.MustBeGTEZero(), + ErrorDetails{"key": KEY_MIN_LENGTH}, + )) + } + currentSchema.minLength = minLengthIntegerValue + } + + if existsMapKey(m, KEY_MAX_LENGTH) { + maxLengthIntegerValue := mustBeInteger(m[KEY_MAX_LENGTH]) + if maxLengthIntegerValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_MAX_LENGTH, "y": TYPE_INTEGER}, + )) + } + if *maxLengthIntegerValue < 0 { + return errors.New(formatErrorDescription( + Locale.MustBeGTEZero(), + ErrorDetails{"key": KEY_MAX_LENGTH}, + )) + } + currentSchema.maxLength = maxLengthIntegerValue + } + + if currentSchema.minLength != nil && currentSchema.maxLength != nil { + if *currentSchema.minLength > *currentSchema.maxLength { + return errors.New(formatErrorDescription( + Locale.CannotBeGT(), + ErrorDetails{"x": KEY_MIN_LENGTH, "y": KEY_MAX_LENGTH}, + )) + } + } + + if existsMapKey(m, KEY_PATTERN) { + if isKind(m[KEY_PATTERN], reflect.String) { + regexpObject, err := regexp.Compile(m[KEY_PATTERN].(string)) + if err != nil { + return errors.New(formatErrorDescription( + Locale.MustBeValidRegex(), + ErrorDetails{"key": KEY_PATTERN}, + )) + } + currentSchema.pattern = regexpObject + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfA(), + ErrorDetails{"x": KEY_PATTERN, "y": TYPE_STRING}, + )) + } + } + + if existsMapKey(m, KEY_FORMAT) { + formatString, ok := m[KEY_FORMAT].(string) + if ok && FormatCheckers.Has(formatString) { + currentSchema.format = formatString + } else { + return errors.New(formatErrorDescription( + Locale.MustBeValidFormat(), + ErrorDetails{"key": KEY_FORMAT, "given": m[KEY_FORMAT]}, + )) + } + } + + // validation : object + + if existsMapKey(m, KEY_MIN_PROPERTIES) { + minPropertiesIntegerValue := mustBeInteger(m[KEY_MIN_PROPERTIES]) + if minPropertiesIntegerValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_MIN_PROPERTIES, "y": TYPE_INTEGER}, + )) + } + if *minPropertiesIntegerValue < 0 { + return errors.New(formatErrorDescription( + Locale.MustBeGTEZero(), + ErrorDetails{"key": KEY_MIN_PROPERTIES}, + )) + } + currentSchema.minProperties = minPropertiesIntegerValue + } + + if existsMapKey(m, KEY_MAX_PROPERTIES) { + maxPropertiesIntegerValue := mustBeInteger(m[KEY_MAX_PROPERTIES]) + if maxPropertiesIntegerValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_MAX_PROPERTIES, "y": TYPE_INTEGER}, + )) + } + if *maxPropertiesIntegerValue < 0 { + return errors.New(formatErrorDescription( + Locale.MustBeGTEZero(), + ErrorDetails{"key": KEY_MAX_PROPERTIES}, + )) + } + currentSchema.maxProperties = maxPropertiesIntegerValue + } + + if currentSchema.minProperties != nil && currentSchema.maxProperties != nil { + if *currentSchema.minProperties > *currentSchema.maxProperties { + return errors.New(formatErrorDescription( + Locale.KeyCannotBeGreaterThan(), + ErrorDetails{"key": KEY_MIN_PROPERTIES, "y": KEY_MAX_PROPERTIES}, + )) + } + } + + if existsMapKey(m, KEY_REQUIRED) { + if isKind(m[KEY_REQUIRED], reflect.Slice) { + requiredValues := m[KEY_REQUIRED].([]interface{}) + for _, requiredValue := range requiredValues { + if isKind(requiredValue, reflect.String) { + err := currentSchema.AddRequired(requiredValue.(string)) + if err != nil { + return err + } + } else { + return errors.New(formatErrorDescription( + Locale.KeyItemsMustBeOfType(), + ErrorDetails{"key": KEY_REQUIRED, "type": TYPE_STRING}, + )) + } + } + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_REQUIRED, "y": TYPE_ARRAY}, + )) + } + } + + // validation : array + + if existsMapKey(m, KEY_MIN_ITEMS) { + minItemsIntegerValue := mustBeInteger(m[KEY_MIN_ITEMS]) + if minItemsIntegerValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_MIN_ITEMS, "y": TYPE_INTEGER}, + )) + } + if *minItemsIntegerValue < 0 { + return errors.New(formatErrorDescription( + Locale.MustBeGTEZero(), + ErrorDetails{"key": KEY_MIN_ITEMS}, + )) + } + currentSchema.minItems = minItemsIntegerValue + } + + if existsMapKey(m, KEY_MAX_ITEMS) { + maxItemsIntegerValue := mustBeInteger(m[KEY_MAX_ITEMS]) + if maxItemsIntegerValue == nil { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_MAX_ITEMS, "y": TYPE_INTEGER}, + )) + } + if *maxItemsIntegerValue < 0 { + return errors.New(formatErrorDescription( + Locale.MustBeGTEZero(), + ErrorDetails{"key": KEY_MAX_ITEMS}, + )) + } + currentSchema.maxItems = maxItemsIntegerValue + } + + if existsMapKey(m, KEY_UNIQUE_ITEMS) { + if isKind(m[KEY_UNIQUE_ITEMS], reflect.Bool) { + currentSchema.uniqueItems = m[KEY_UNIQUE_ITEMS].(bool) + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfA(), + ErrorDetails{"x": KEY_UNIQUE_ITEMS, "y": TYPE_BOOLEAN}, + )) + } + } + + // validation : all + + if existsMapKey(m, KEY_ENUM) { + if isKind(m[KEY_ENUM], reflect.Slice) { + for _, v := range m[KEY_ENUM].([]interface{}) { + err := currentSchema.AddEnum(v) + if err != nil { + return err + } + } + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_ENUM, "y": TYPE_ARRAY}, + )) + } + } + + // validation : subSchema + + if existsMapKey(m, KEY_ONE_OF) { + if isKind(m[KEY_ONE_OF], reflect.Slice) { + for _, v := range m[KEY_ONE_OF].([]interface{}) { + newSchema := &subSchema{property: KEY_ONE_OF, parent: currentSchema, ref: currentSchema.ref} + currentSchema.AddOneOf(newSchema) + err := d.parseSchema(v, newSchema) + if err != nil { + return err + } + } + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_ONE_OF, "y": TYPE_ARRAY}, + )) + } + } + + if existsMapKey(m, KEY_ANY_OF) { + if isKind(m[KEY_ANY_OF], reflect.Slice) { + for _, v := range m[KEY_ANY_OF].([]interface{}) { + newSchema := &subSchema{property: KEY_ANY_OF, parent: currentSchema, ref: currentSchema.ref} + currentSchema.AddAnyOf(newSchema) + err := d.parseSchema(v, newSchema) + if err != nil { + return err + } + } + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_ANY_OF, "y": TYPE_ARRAY}, + )) + } + } + + if existsMapKey(m, KEY_ALL_OF) { + if isKind(m[KEY_ALL_OF], reflect.Slice) { + for _, v := range m[KEY_ALL_OF].([]interface{}) { + newSchema := &subSchema{property: KEY_ALL_OF, parent: currentSchema, ref: currentSchema.ref} + currentSchema.AddAllOf(newSchema) + err := d.parseSchema(v, newSchema) + if err != nil { + return err + } + } + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_ANY_OF, "y": TYPE_ARRAY}, + )) + } + } + + if existsMapKey(m, KEY_NOT) { + if isKind(m[KEY_NOT], reflect.Map) { + newSchema := &subSchema{property: KEY_NOT, parent: currentSchema, ref: currentSchema.ref} + currentSchema.SetNot(newSchema) + err := d.parseSchema(m[KEY_NOT], newSchema) + if err != nil { + return err + } + } else { + return errors.New(formatErrorDescription( + Locale.MustBeOfAn(), + ErrorDetails{"x": KEY_NOT, "y": TYPE_OBJECT}, + )) + } + } + + return nil +} + +func (d *Schema) parseReference(documentNode interface{}, currentSchema *subSchema, reference string) (e error) { + + var err error + + jsonReference, err := gojsonreference.NewJsonReference(reference) + if err != nil { + return err + } + + standaloneDocument := d.pool.GetStandaloneDocument() + + if jsonReference.HasFullUrl { + currentSchema.ref = &jsonReference + } else { + inheritedReference, err := currentSchema.ref.Inherits(jsonReference) + if err != nil { + return err + } + currentSchema.ref = inheritedReference + } + + jsonPointer := currentSchema.ref.GetPointer() + + var refdDocumentNode interface{} + + if standaloneDocument != nil { + + var err error + refdDocumentNode, _, err = jsonPointer.Get(standaloneDocument) + if err != nil { + return err + } + + } else { + + var err error + dsp, err := d.pool.GetDocument(*currentSchema.ref) + if err != nil { + return err + } + + refdDocumentNode, _, err = jsonPointer.Get(dsp.Document) + if err != nil { + return err + } + + } + + if !isKind(refdDocumentNode, reflect.Map) { + return errors.New(formatErrorDescription( + Locale.MustBeOfType(), + ErrorDetails{"key": STRING_SCHEMA, "type": TYPE_OBJECT}, + )) + } + + // returns the loaded referenced subSchema for the caller to update its current subSchema + newSchemaDocument := refdDocumentNode.(map[string]interface{}) + + newSchema := &subSchema{property: KEY_REF, parent: currentSchema, ref: currentSchema.ref} + d.referencePool.Add(currentSchema.ref.String()+reference, newSchema) + + err = d.parseSchema(newSchemaDocument, newSchema) + if err != nil { + return err + } + + currentSchema.refSchema = newSchema + + return nil + +} + +func (d *Schema) parseProperties(documentNode interface{}, currentSchema *subSchema) error { + + if !isKind(documentNode, reflect.Map) { + return errors.New(formatErrorDescription( + Locale.MustBeOfType(), + ErrorDetails{"key": STRING_PROPERTIES, "type": TYPE_OBJECT}, + )) + } + + m := documentNode.(map[string]interface{}) + for k := range m { + schemaProperty := k + newSchema := &subSchema{property: schemaProperty, parent: currentSchema, ref: currentSchema.ref} + currentSchema.AddPropertiesChild(newSchema) + err := d.parseSchema(m[k], newSchema) + if err != nil { + return err + } + } + + return nil +} + +func (d *Schema) parseDependencies(documentNode interface{}, currentSchema *subSchema) error { + + if !isKind(documentNode, reflect.Map) { + return errors.New(formatErrorDescription( + Locale.MustBeOfType(), + ErrorDetails{"key": KEY_DEPENDENCIES, "type": TYPE_OBJECT}, + )) + } + + m := documentNode.(map[string]interface{}) + currentSchema.dependencies = make(map[string]interface{}) + + for k := range m { + switch reflect.ValueOf(m[k]).Kind() { + + case reflect.Slice: + values := m[k].([]interface{}) + var valuesToRegister []string + + for _, value := range values { + if !isKind(value, reflect.String) { + return errors.New(formatErrorDescription( + Locale.MustBeOfType(), + ErrorDetails{ + "key": STRING_DEPENDENCY, + "type": STRING_SCHEMA_OR_ARRAY_OF_STRINGS, + }, + )) + } else { + valuesToRegister = append(valuesToRegister, value.(string)) + } + currentSchema.dependencies[k] = valuesToRegister + } + + case reflect.Map: + depSchema := &subSchema{property: k, parent: currentSchema, ref: currentSchema.ref} + err := d.parseSchema(m[k], depSchema) + if err != nil { + return err + } + currentSchema.dependencies[k] = depSchema + + default: + return errors.New(formatErrorDescription( + Locale.MustBeOfType(), + ErrorDetails{ + "key": STRING_DEPENDENCY, + "type": STRING_SCHEMA_OR_ARRAY_OF_STRINGS, + }, + )) + } + + } + + return nil +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaPool.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaPool.go new file mode 100644 index 0000000000..79fbb60cb8 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaPool.go @@ -0,0 +1,107 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Defines resources pooling. +// Eases referencing and avoids downloading the same resource twice. +// +// created 26-02-2013 + +package gojsonschema + +import ( + "errors" + + "github.com/xeipuuv/gojsonreference" +) + +type schemaPoolDocument struct { + Document interface{} +} + +type schemaPool struct { + schemaPoolDocuments map[string]*schemaPoolDocument + standaloneDocument interface{} +} + +func newSchemaPool() *schemaPool { + + p := &schemaPool{} + p.schemaPoolDocuments = make(map[string]*schemaPoolDocument) + p.standaloneDocument = nil + + return p +} + +func (p *schemaPool) SetStandaloneDocument(document interface{}) { + p.standaloneDocument = document +} + +func (p *schemaPool) GetStandaloneDocument() (document interface{}) { + return p.standaloneDocument +} + +func (p *schemaPool) GetDocument(reference gojsonreference.JsonReference) (*schemaPoolDocument, error) { + + if internalLogEnabled { + internalLog("Get Document ( %s )", reference.String()) + } + + var err error + + // It is not possible to load anything that is not canonical... + if !reference.IsCanonical() { + return nil, errors.New(formatErrorDescription( + Locale.ReferenceMustBeCanonical(), + ErrorDetails{"reference": reference}, + )) + } + + refToUrl := reference + refToUrl.GetUrl().Fragment = "" + + var spd *schemaPoolDocument + + // Try to find the requested document in the pool + for k := range p.schemaPoolDocuments { + if k == refToUrl.String() { + spd = p.schemaPoolDocuments[k] + } + } + + if spd != nil { + if internalLogEnabled { + internalLog(" From pool") + } + return spd, nil + } + + jsonReferenceLoader := NewReferenceLoader(reference.String()) + document, err := jsonReferenceLoader.loadJSON() + if err != nil { + return nil, err + } + + spd = &schemaPoolDocument{Document: document} + // add the document to the pool for potential later use + p.schemaPoolDocuments[refToUrl.String()] = spd + + return spd, nil +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaReferencePool.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaReferencePool.go new file mode 100644 index 0000000000..294e36a732 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaReferencePool.go @@ -0,0 +1,67 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Pool of referenced schemas. +// +// created 25-06-2013 + +package gojsonschema + +import ( + "fmt" +) + +type schemaReferencePool struct { + documents map[string]*subSchema +} + +func newSchemaReferencePool() *schemaReferencePool { + + p := &schemaReferencePool{} + p.documents = make(map[string]*subSchema) + + return p +} + +func (p *schemaReferencePool) Get(ref string) (r *subSchema, o bool) { + + if internalLogEnabled { + internalLog(fmt.Sprintf("Schema Reference ( %s )", ref)) + } + + if sch, ok := p.documents[ref]; ok { + if internalLogEnabled { + internalLog(fmt.Sprintf(" From pool")) + } + return sch, true + } + + return nil, false +} + +func (p *schemaReferencePool) Add(ref string, sch *subSchema) { + + if internalLogEnabled { + internalLog(fmt.Sprintf("Add Schema Reference %s to pool", ref)) + } + + p.documents[ref] = sch +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaType.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaType.go new file mode 100644 index 0000000000..e13a0fb0cb --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/schemaType.go @@ -0,0 +1,83 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Helper structure to handle schema types, and the combination of them. +// +// created 28-02-2013 + +package gojsonschema + +import ( + "errors" + "fmt" + "strings" +) + +type jsonSchemaType struct { + types []string +} + +// Is the schema typed ? that is containing at least one type +// When not typed, the schema does not need any type validation +func (t *jsonSchemaType) IsTyped() bool { + return len(t.types) > 0 +} + +func (t *jsonSchemaType) Add(etype string) error { + + if !isStringInSlice(JSON_TYPES, etype) { + return errors.New(formatErrorDescription(Locale.NotAValidType(), ErrorDetails{"type": etype})) + } + + if t.Contains(etype) { + return errors.New(formatErrorDescription(Locale.Duplicated(), ErrorDetails{"type": etype})) + } + + t.types = append(t.types, etype) + + return nil +} + +func (t *jsonSchemaType) Contains(etype string) bool { + + for _, v := range t.types { + if v == etype { + return true + } + } + + return false +} + +func (t *jsonSchemaType) String() string { + + if len(t.types) == 0 { + return STRING_UNDEFINED // should never happen + } + + // Displayed as a list [type1,type2,...] + if len(t.types) > 1 { + return fmt.Sprintf("[%s]", strings.Join(t.types, ",")) + } + + // Only one type: name only + return t.types[0] +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/subSchema.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/subSchema.go new file mode 100644 index 0000000000..b249b7e550 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/subSchema.go @@ -0,0 +1,227 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Defines the structure of a sub-subSchema. +// A sub-subSchema can contain other sub-schemas. +// +// created 27-02-2013 + +package gojsonschema + +import ( + "errors" + "regexp" + "strings" + + "github.com/xeipuuv/gojsonreference" +) + +const ( + KEY_SCHEMA = "$subSchema" + KEY_ID = "$id" + KEY_REF = "$ref" + KEY_TITLE = "title" + KEY_DESCRIPTION = "description" + KEY_TYPE = "type" + KEY_ITEMS = "items" + KEY_ADDITIONAL_ITEMS = "additionalItems" + KEY_PROPERTIES = "properties" + KEY_PATTERN_PROPERTIES = "patternProperties" + KEY_ADDITIONAL_PROPERTIES = "additionalProperties" + KEY_DEFINITIONS = "definitions" + KEY_MULTIPLE_OF = "multipleOf" + KEY_MINIMUM = "minimum" + KEY_MAXIMUM = "maximum" + KEY_EXCLUSIVE_MINIMUM = "exclusiveMinimum" + KEY_EXCLUSIVE_MAXIMUM = "exclusiveMaximum" + KEY_MIN_LENGTH = "minLength" + KEY_MAX_LENGTH = "maxLength" + KEY_PATTERN = "pattern" + KEY_FORMAT = "format" + KEY_MIN_PROPERTIES = "minProperties" + KEY_MAX_PROPERTIES = "maxProperties" + KEY_DEPENDENCIES = "dependencies" + KEY_REQUIRED = "required" + KEY_MIN_ITEMS = "minItems" + KEY_MAX_ITEMS = "maxItems" + KEY_UNIQUE_ITEMS = "uniqueItems" + KEY_ENUM = "enum" + KEY_ONE_OF = "oneOf" + KEY_ANY_OF = "anyOf" + KEY_ALL_OF = "allOf" + KEY_NOT = "not" +) + +type subSchema struct { + + // basic subSchema meta properties + id *string + title *string + description *string + + property string + + // Types associated with the subSchema + types jsonSchemaType + + // Reference url + ref *gojsonreference.JsonReference + // Schema referenced + refSchema *subSchema + // Json reference + subSchema *gojsonreference.JsonReference + + // hierarchy + parent *subSchema + definitions map[string]*subSchema + definitionsChildren []*subSchema + itemsChildren []*subSchema + itemsChildrenIsSingleSchema bool + propertiesChildren []*subSchema + + // validation : number / integer + multipleOf *float64 + maximum *float64 + exclusiveMaximum bool + minimum *float64 + exclusiveMinimum bool + + // validation : string + minLength *int + maxLength *int + pattern *regexp.Regexp + format string + + // validation : object + minProperties *int + maxProperties *int + required []string + + dependencies map[string]interface{} + additionalProperties interface{} + patternProperties map[string]*subSchema + + // validation : array + minItems *int + maxItems *int + uniqueItems bool + + additionalItems interface{} + + // validation : all + enum []string + + // validation : subSchema + oneOf []*subSchema + anyOf []*subSchema + allOf []*subSchema + not *subSchema +} + +func (s *subSchema) AddEnum(i interface{}) error { + + is, err := marshalToJsonString(i) + if err != nil { + return err + } + + if isStringInSlice(s.enum, *is) { + return errors.New(formatErrorDescription( + Locale.KeyItemsMustBeUnique(), + ErrorDetails{"key": KEY_ENUM}, + )) + } + + s.enum = append(s.enum, *is) + + return nil +} + +func (s *subSchema) ContainsEnum(i interface{}) (bool, error) { + + is, err := marshalToJsonString(i) + if err != nil { + return false, err + } + + return isStringInSlice(s.enum, *is), nil +} + +func (s *subSchema) AddOneOf(subSchema *subSchema) { + s.oneOf = append(s.oneOf, subSchema) +} + +func (s *subSchema) AddAllOf(subSchema *subSchema) { + s.allOf = append(s.allOf, subSchema) +} + +func (s *subSchema) AddAnyOf(subSchema *subSchema) { + s.anyOf = append(s.anyOf, subSchema) +} + +func (s *subSchema) SetNot(subSchema *subSchema) { + s.not = subSchema +} + +func (s *subSchema) AddRequired(value string) error { + + if isStringInSlice(s.required, value) { + return errors.New(formatErrorDescription( + Locale.KeyItemsMustBeUnique(), + ErrorDetails{"key": KEY_REQUIRED}, + )) + } + + s.required = append(s.required, value) + + return nil +} + +func (s *subSchema) AddDefinitionChild(child *subSchema) { + s.definitionsChildren = append(s.definitionsChildren, child) +} + +func (s *subSchema) AddItemsChild(child *subSchema) { + s.itemsChildren = append(s.itemsChildren, child) +} + +func (s *subSchema) AddPropertiesChild(child *subSchema) { + s.propertiesChildren = append(s.propertiesChildren, child) +} + +func (s *subSchema) PatternPropertiesString() string { + + if s.patternProperties == nil || len(s.patternProperties) == 0 { + return STRING_UNDEFINED // should never happen + } + + patternPropertiesKeySlice := []string{} + for pk, _ := range s.patternProperties { + patternPropertiesKeySlice = append(patternPropertiesKeySlice, `"`+pk+`"`) + } + + if len(patternPropertiesKeySlice) == 1 { + return patternPropertiesKeySlice[0] + } + + return "[" + strings.Join(patternPropertiesKeySlice, ",") + "]" + +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/types.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/types.go new file mode 100644 index 0000000000..952d22ef65 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/types.go @@ -0,0 +1,58 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Contains const types for schema and JSON. +// +// created 28-02-2013 + +package gojsonschema + +const ( + TYPE_ARRAY = `array` + TYPE_BOOLEAN = `boolean` + TYPE_INTEGER = `integer` + TYPE_NUMBER = `number` + TYPE_NULL = `null` + TYPE_OBJECT = `object` + TYPE_STRING = `string` +) + +var JSON_TYPES []string +var SCHEMA_TYPES []string + +func init() { + JSON_TYPES = []string{ + TYPE_ARRAY, + TYPE_BOOLEAN, + TYPE_INTEGER, + TYPE_NUMBER, + TYPE_NULL, + TYPE_OBJECT, + TYPE_STRING} + + SCHEMA_TYPES = []string{ + TYPE_ARRAY, + TYPE_BOOLEAN, + TYPE_INTEGER, + TYPE_NUMBER, + TYPE_OBJECT, + TYPE_STRING} +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/utils.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/utils.go new file mode 100644 index 0000000000..cfeb628eb5 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/utils.go @@ -0,0 +1,202 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Various utility functions. +// +// created 26-02-2013 + +package gojsonschema + +import ( + "encoding/json" + "fmt" + "math" + "reflect" + "strconv" +) + +func isKind(what interface{}, kind reflect.Kind) bool { + return reflect.ValueOf(what).Kind() == kind +} + +func existsMapKey(m map[string]interface{}, k string) bool { + _, ok := m[k] + return ok +} + +func isStringInSlice(s []string, what string) bool { + for i := range s { + if s[i] == what { + return true + } + } + return false +} + +func marshalToJsonString(value interface{}) (*string, error) { + + mBytes, err := json.Marshal(value) + if err != nil { + return nil, err + } + + sBytes := string(mBytes) + return &sBytes, nil +} + +func isJsonNumber(what interface{}) bool { + + switch what.(type) { + + case json.Number: + return true + } + + return false +} + +func checkJsonNumber(what interface{}) (isValidFloat64 bool, isValidInt64 bool, isValidInt32 bool) { + + jsonNumber := what.(json.Number) + + _, errFloat64 := jsonNumber.Float64() + _, errInt64 := jsonNumber.Int64() + + isValidFloat64 = errFloat64 == nil + isValidInt64 = errInt64 == nil + + _, errInt32 := strconv.ParseInt(jsonNumber.String(), 10, 32) + isValidInt32 = isValidInt64 && errInt32 == nil + + return + +} + +// same as ECMA Number.MAX_SAFE_INTEGER and Number.MIN_SAFE_INTEGER +const ( + max_json_float = float64(1<<53 - 1) // 9007199254740991.0 2^53 - 1 + min_json_float = -float64(1<<53 - 1) //-9007199254740991.0 -2^53 - 1 +) + +func isFloat64AnInteger(f float64) bool { + + if math.IsNaN(f) || math.IsInf(f, 0) || f < min_json_float || f > max_json_float { + return false + } + + return f == float64(int64(f)) || f == float64(uint64(f)) +} + +func mustBeInteger(what interface{}) *int { + + if isJsonNumber(what) { + + number := what.(json.Number) + + _, _, isValidInt32 := checkJsonNumber(number) + + if isValidInt32 { + + int64Value, err := number.Int64() + if err != nil { + return nil + } + + int32Value := int(int64Value) + return &int32Value + + } else { + return nil + } + + } + + return nil +} + +func mustBeNumber(what interface{}) *float64 { + + if isJsonNumber(what) { + + number := what.(json.Number) + float64Value, err := number.Float64() + + if err == nil { + return &float64Value + } else { + return nil + } + + } + + return nil + +} + +// formats a number so that it is displayed as the smallest string possible +func resultErrorFormatJsonNumber(n json.Number) string { + + if int64Value, err := n.Int64(); err == nil { + return fmt.Sprintf("%d", int64Value) + } + + float64Value, _ := n.Float64() + + return fmt.Sprintf("%g", float64Value) +} + +// formats a number so that it is displayed as the smallest string possible +func resultErrorFormatNumber(n float64) string { + + if isFloat64AnInteger(n) { + return fmt.Sprintf("%d", int64(n)) + } + + return fmt.Sprintf("%g", n) +} + +func convertDocumentNode(val interface{}) interface{} { + + if lval, ok := val.([]interface{}); ok { + + res := []interface{}{} + for _, v := range lval { + res = append(res, convertDocumentNode(v)) + } + + return res + + } + + if mval, ok := val.(map[interface{}]interface{}); ok { + + res := map[string]interface{}{} + + for k, v := range mval { + res[k.(string)] = convertDocumentNode(v) + } + + return res + + } + + return val +} diff --git a/components/engine/vendor/github.com/xeipuuv/gojsonschema/validation.go b/components/engine/vendor/github.com/xeipuuv/gojsonschema/validation.go new file mode 100644 index 0000000000..2dc0df2275 --- /dev/null +++ b/components/engine/vendor/github.com/xeipuuv/gojsonschema/validation.go @@ -0,0 +1,829 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonschema +// repository-desc An implementation of JSON Schema, based on IETF's draft v4 - Go language. +// +// description Extends Schema and subSchema, implements the validation phase. +// +// created 28-02-2013 + +package gojsonschema + +import ( + "encoding/json" + "reflect" + "regexp" + "strconv" + "strings" + "unicode/utf8" +) + +func Validate(ls JSONLoader, ld JSONLoader) (*Result, error) { + + var err error + + // load schema + + schema, err := NewSchema(ls) + if err != nil { + return nil, err + } + + // begine validation + + return schema.Validate(ld) + +} + +func (v *Schema) Validate(l JSONLoader) (*Result, error) { + + // load document + + root, err := l.loadJSON() + if err != nil { + return nil, err + } + + // begin validation + + result := &Result{} + context := newJsonContext(STRING_CONTEXT_ROOT, nil) + v.rootSchema.validateRecursive(v.rootSchema, root, result, context) + + return result, nil + +} + +func (v *subSchema) subValidateWithContext(document interface{}, context *jsonContext) *Result { + result := &Result{} + v.validateRecursive(v, document, result, context) + return result +} + +// Walker function to validate the json recursively against the subSchema +func (v *subSchema) validateRecursive(currentSubSchema *subSchema, currentNode interface{}, result *Result, context *jsonContext) { + + if internalLogEnabled { + internalLog("validateRecursive %s", context.String()) + internalLog(" %v", currentNode) + } + + // Handle referenced schemas, returns directly when a $ref is found + if currentSubSchema.refSchema != nil { + v.validateRecursive(currentSubSchema.refSchema, currentNode, result, context) + return + } + + // Check for null value + if currentNode == nil { + if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_NULL) { + result.addError( + new(InvalidTypeError), + context, + currentNode, + ErrorDetails{ + "expected": currentSubSchema.types.String(), + "given": TYPE_NULL, + }, + ) + return + } + + currentSubSchema.validateSchema(currentSubSchema, currentNode, result, context) + v.validateCommon(currentSubSchema, currentNode, result, context) + + } else { // Not a null value + + if isJsonNumber(currentNode) { + + value := currentNode.(json.Number) + + _, isValidInt64, _ := checkJsonNumber(value) + + validType := currentSubSchema.types.Contains(TYPE_NUMBER) || (isValidInt64 && currentSubSchema.types.Contains(TYPE_INTEGER)) + + if currentSubSchema.types.IsTyped() && !validType { + + givenType := TYPE_INTEGER + if !isValidInt64 { + givenType = TYPE_NUMBER + } + + result.addError( + new(InvalidTypeError), + context, + currentNode, + ErrorDetails{ + "expected": currentSubSchema.types.String(), + "given": givenType, + }, + ) + return + } + + currentSubSchema.validateSchema(currentSubSchema, value, result, context) + v.validateNumber(currentSubSchema, value, result, context) + v.validateCommon(currentSubSchema, value, result, context) + v.validateString(currentSubSchema, value, result, context) + + } else { + + rValue := reflect.ValueOf(currentNode) + rKind := rValue.Kind() + + switch rKind { + + // Slice => JSON array + + case reflect.Slice: + + if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_ARRAY) { + result.addError( + new(InvalidTypeError), + context, + currentNode, + ErrorDetails{ + "expected": currentSubSchema.types.String(), + "given": TYPE_ARRAY, + }, + ) + return + } + + castCurrentNode := currentNode.([]interface{}) + + currentSubSchema.validateSchema(currentSubSchema, castCurrentNode, result, context) + + v.validateArray(currentSubSchema, castCurrentNode, result, context) + v.validateCommon(currentSubSchema, castCurrentNode, result, context) + + // Map => JSON object + + case reflect.Map: + if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_OBJECT) { + result.addError( + new(InvalidTypeError), + context, + currentNode, + ErrorDetails{ + "expected": currentSubSchema.types.String(), + "given": TYPE_OBJECT, + }, + ) + return + } + + castCurrentNode, ok := currentNode.(map[string]interface{}) + if !ok { + castCurrentNode = convertDocumentNode(currentNode).(map[string]interface{}) + } + + currentSubSchema.validateSchema(currentSubSchema, castCurrentNode, result, context) + + v.validateObject(currentSubSchema, castCurrentNode, result, context) + v.validateCommon(currentSubSchema, castCurrentNode, result, context) + + for _, pSchema := range currentSubSchema.propertiesChildren { + nextNode, ok := castCurrentNode[pSchema.property] + if ok { + subContext := newJsonContext(pSchema.property, context) + v.validateRecursive(pSchema, nextNode, result, subContext) + } + } + + // Simple JSON values : string, number, boolean + + case reflect.Bool: + + if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_BOOLEAN) { + result.addError( + new(InvalidTypeError), + context, + currentNode, + ErrorDetails{ + "expected": currentSubSchema.types.String(), + "given": TYPE_BOOLEAN, + }, + ) + return + } + + value := currentNode.(bool) + + currentSubSchema.validateSchema(currentSubSchema, value, result, context) + v.validateNumber(currentSubSchema, value, result, context) + v.validateCommon(currentSubSchema, value, result, context) + v.validateString(currentSubSchema, value, result, context) + + case reflect.String: + + if currentSubSchema.types.IsTyped() && !currentSubSchema.types.Contains(TYPE_STRING) { + result.addError( + new(InvalidTypeError), + context, + currentNode, + ErrorDetails{ + "expected": currentSubSchema.types.String(), + "given": TYPE_STRING, + }, + ) + return + } + + value := currentNode.(string) + + currentSubSchema.validateSchema(currentSubSchema, value, result, context) + v.validateNumber(currentSubSchema, value, result, context) + v.validateCommon(currentSubSchema, value, result, context) + v.validateString(currentSubSchema, value, result, context) + + } + + } + + } + + result.incrementScore() +} + +// Different kinds of validation there, subSchema / common / array / object / string... +func (v *subSchema) validateSchema(currentSubSchema *subSchema, currentNode interface{}, result *Result, context *jsonContext) { + + if internalLogEnabled { + internalLog("validateSchema %s", context.String()) + internalLog(" %v", currentNode) + } + + if len(currentSubSchema.anyOf) > 0 { + + validatedAnyOf := false + var bestValidationResult *Result + + for _, anyOfSchema := range currentSubSchema.anyOf { + if !validatedAnyOf { + validationResult := anyOfSchema.subValidateWithContext(currentNode, context) + validatedAnyOf = validationResult.Valid() + + if !validatedAnyOf && (bestValidationResult == nil || validationResult.score > bestValidationResult.score) { + bestValidationResult = validationResult + } + } + } + if !validatedAnyOf { + + result.addError(new(NumberAnyOfError), context, currentNode, ErrorDetails{}) + + if bestValidationResult != nil { + // add error messages of closest matching subSchema as + // that's probably the one the user was trying to match + result.mergeErrors(bestValidationResult) + } + } + } + + if len(currentSubSchema.oneOf) > 0 { + + nbValidated := 0 + var bestValidationResult *Result + + for _, oneOfSchema := range currentSubSchema.oneOf { + validationResult := oneOfSchema.subValidateWithContext(currentNode, context) + if validationResult.Valid() { + nbValidated++ + } else if nbValidated == 0 && (bestValidationResult == nil || validationResult.score > bestValidationResult.score) { + bestValidationResult = validationResult + } + } + + if nbValidated != 1 { + + result.addError(new(NumberOneOfError), context, currentNode, ErrorDetails{}) + + if nbValidated == 0 { + // add error messages of closest matching subSchema as + // that's probably the one the user was trying to match + result.mergeErrors(bestValidationResult) + } + } + + } + + if len(currentSubSchema.allOf) > 0 { + nbValidated := 0 + + for _, allOfSchema := range currentSubSchema.allOf { + validationResult := allOfSchema.subValidateWithContext(currentNode, context) + if validationResult.Valid() { + nbValidated++ + } + result.mergeErrors(validationResult) + } + + if nbValidated != len(currentSubSchema.allOf) { + result.addError(new(NumberAllOfError), context, currentNode, ErrorDetails{}) + } + } + + if currentSubSchema.not != nil { + validationResult := currentSubSchema.not.subValidateWithContext(currentNode, context) + if validationResult.Valid() { + result.addError(new(NumberNotError), context, currentNode, ErrorDetails{}) + } + } + + if currentSubSchema.dependencies != nil && len(currentSubSchema.dependencies) > 0 { + if isKind(currentNode, reflect.Map) { + for elementKey := range currentNode.(map[string]interface{}) { + if dependency, ok := currentSubSchema.dependencies[elementKey]; ok { + switch dependency := dependency.(type) { + + case []string: + for _, dependOnKey := range dependency { + if _, dependencyResolved := currentNode.(map[string]interface{})[dependOnKey]; !dependencyResolved { + result.addError( + new(MissingDependencyError), + context, + currentNode, + ErrorDetails{"dependency": dependOnKey}, + ) + } + } + + case *subSchema: + dependency.validateRecursive(dependency, currentNode, result, context) + + } + } + } + } + } + + result.incrementScore() +} + +func (v *subSchema) validateCommon(currentSubSchema *subSchema, value interface{}, result *Result, context *jsonContext) { + + if internalLogEnabled { + internalLog("validateCommon %s", context.String()) + internalLog(" %v", value) + } + + // enum: + if len(currentSubSchema.enum) > 0 { + has, err := currentSubSchema.ContainsEnum(value) + if err != nil { + result.addError(new(InternalError), context, value, ErrorDetails{"error": err}) + } + if !has { + result.addError( + new(EnumError), + context, + value, + ErrorDetails{ + "allowed": strings.Join(currentSubSchema.enum, ", "), + }, + ) + } + } + + result.incrementScore() +} + +func (v *subSchema) validateArray(currentSubSchema *subSchema, value []interface{}, result *Result, context *jsonContext) { + + if internalLogEnabled { + internalLog("validateArray %s", context.String()) + internalLog(" %v", value) + } + + nbItems := len(value) + + // TODO explain + if currentSubSchema.itemsChildrenIsSingleSchema { + for i := range value { + subContext := newJsonContext(strconv.Itoa(i), context) + validationResult := currentSubSchema.itemsChildren[0].subValidateWithContext(value[i], subContext) + result.mergeErrors(validationResult) + } + } else { + if currentSubSchema.itemsChildren != nil && len(currentSubSchema.itemsChildren) > 0 { + + nbItems := len(currentSubSchema.itemsChildren) + nbValues := len(value) + + if nbItems == nbValues { + for i := 0; i != nbItems; i++ { + subContext := newJsonContext(strconv.Itoa(i), context) + validationResult := currentSubSchema.itemsChildren[i].subValidateWithContext(value[i], subContext) + result.mergeErrors(validationResult) + } + } else if nbItems < nbValues { + switch currentSubSchema.additionalItems.(type) { + case bool: + if !currentSubSchema.additionalItems.(bool) { + result.addError(new(ArrayNoAdditionalItemsError), context, value, ErrorDetails{}) + } + case *subSchema: + additionalItemSchema := currentSubSchema.additionalItems.(*subSchema) + for i := nbItems; i != nbValues; i++ { + subContext := newJsonContext(strconv.Itoa(i), context) + validationResult := additionalItemSchema.subValidateWithContext(value[i], subContext) + result.mergeErrors(validationResult) + } + } + } + } + } + + // minItems & maxItems + if currentSubSchema.minItems != nil { + if nbItems < int(*currentSubSchema.minItems) { + result.addError( + new(ArrayMinItemsError), + context, + value, + ErrorDetails{"min": *currentSubSchema.minItems}, + ) + } + } + if currentSubSchema.maxItems != nil { + if nbItems > int(*currentSubSchema.maxItems) { + result.addError( + new(ArrayMaxItemsError), + context, + value, + ErrorDetails{"max": *currentSubSchema.maxItems}, + ) + } + } + + // uniqueItems: + if currentSubSchema.uniqueItems { + var stringifiedItems []string + for _, v := range value { + vString, err := marshalToJsonString(v) + if err != nil { + result.addError(new(InternalError), context, value, ErrorDetails{"err": err}) + } + if isStringInSlice(stringifiedItems, *vString) { + result.addError( + new(ItemsMustBeUniqueError), + context, + value, + ErrorDetails{"type": TYPE_ARRAY}, + ) + } + stringifiedItems = append(stringifiedItems, *vString) + } + } + + result.incrementScore() +} + +func (v *subSchema) validateObject(currentSubSchema *subSchema, value map[string]interface{}, result *Result, context *jsonContext) { + + if internalLogEnabled { + internalLog("validateObject %s", context.String()) + internalLog(" %v", value) + } + + // minProperties & maxProperties: + if currentSubSchema.minProperties != nil { + if len(value) < int(*currentSubSchema.minProperties) { + result.addError( + new(ArrayMinPropertiesError), + context, + value, + ErrorDetails{"min": *currentSubSchema.minProperties}, + ) + } + } + if currentSubSchema.maxProperties != nil { + if len(value) > int(*currentSubSchema.maxProperties) { + result.addError( + new(ArrayMaxPropertiesError), + context, + value, + ErrorDetails{"max": *currentSubSchema.maxProperties}, + ) + } + } + + // required: + for _, requiredProperty := range currentSubSchema.required { + _, ok := value[requiredProperty] + if ok { + result.incrementScore() + } else { + result.addError( + new(RequiredError), + context, + value, + ErrorDetails{"property": requiredProperty}, + ) + } + } + + // additionalProperty & patternProperty: + if currentSubSchema.additionalProperties != nil { + + switch currentSubSchema.additionalProperties.(type) { + case bool: + + if !currentSubSchema.additionalProperties.(bool) { + + for pk := range value { + + found := false + for _, spValue := range currentSubSchema.propertiesChildren { + if pk == spValue.property { + found = true + } + } + + pp_has, pp_match := v.validatePatternProperty(currentSubSchema, pk, value[pk], result, context) + + if found { + + if pp_has && !pp_match { + result.addError( + new(AdditionalPropertyNotAllowedError), + context, + value, + ErrorDetails{"property": pk}, + ) + } + + } else { + + if !pp_has || !pp_match { + result.addError( + new(AdditionalPropertyNotAllowedError), + context, + value, + ErrorDetails{"property": pk}, + ) + } + + } + } + } + + case *subSchema: + + additionalPropertiesSchema := currentSubSchema.additionalProperties.(*subSchema) + for pk := range value { + + found := false + for _, spValue := range currentSubSchema.propertiesChildren { + if pk == spValue.property { + found = true + } + } + + pp_has, pp_match := v.validatePatternProperty(currentSubSchema, pk, value[pk], result, context) + + if found { + + if pp_has && !pp_match { + validationResult := additionalPropertiesSchema.subValidateWithContext(value[pk], context) + result.mergeErrors(validationResult) + } + + } else { + + if !pp_has || !pp_match { + validationResult := additionalPropertiesSchema.subValidateWithContext(value[pk], context) + result.mergeErrors(validationResult) + } + + } + + } + } + } else { + + for pk := range value { + + pp_has, pp_match := v.validatePatternProperty(currentSubSchema, pk, value[pk], result, context) + + if pp_has && !pp_match { + + result.addError( + new(InvalidPropertyPatternError), + context, + value, + ErrorDetails{ + "property": pk, + "pattern": currentSubSchema.PatternPropertiesString(), + }, + ) + } + + } + } + + result.incrementScore() +} + +func (v *subSchema) validatePatternProperty(currentSubSchema *subSchema, key string, value interface{}, result *Result, context *jsonContext) (has bool, matched bool) { + + if internalLogEnabled { + internalLog("validatePatternProperty %s", context.String()) + internalLog(" %s %v", key, value) + } + + has = false + + validatedkey := false + + for pk, pv := range currentSubSchema.patternProperties { + if matches, _ := regexp.MatchString(pk, key); matches { + has = true + subContext := newJsonContext(key, context) + validationResult := pv.subValidateWithContext(value, subContext) + result.mergeErrors(validationResult) + if validationResult.Valid() { + validatedkey = true + } + } + } + + if !validatedkey { + return has, false + } + + result.incrementScore() + + return has, true +} + +func (v *subSchema) validateString(currentSubSchema *subSchema, value interface{}, result *Result, context *jsonContext) { + + // Ignore JSON numbers + if isJsonNumber(value) { + return + } + + // Ignore non strings + if !isKind(value, reflect.String) { + return + } + + if internalLogEnabled { + internalLog("validateString %s", context.String()) + internalLog(" %v", value) + } + + stringValue := value.(string) + + // minLength & maxLength: + if currentSubSchema.minLength != nil { + if utf8.RuneCount([]byte(stringValue)) < int(*currentSubSchema.minLength) { + result.addError( + new(StringLengthGTEError), + context, + value, + ErrorDetails{"min": *currentSubSchema.minLength}, + ) + } + } + if currentSubSchema.maxLength != nil { + if utf8.RuneCount([]byte(stringValue)) > int(*currentSubSchema.maxLength) { + result.addError( + new(StringLengthLTEError), + context, + value, + ErrorDetails{"max": *currentSubSchema.maxLength}, + ) + } + } + + // pattern: + if currentSubSchema.pattern != nil { + if !currentSubSchema.pattern.MatchString(stringValue) { + result.addError( + new(DoesNotMatchPatternError), + context, + value, + ErrorDetails{"pattern": currentSubSchema.pattern}, + ) + + } + } + + // format + if currentSubSchema.format != "" { + if !FormatCheckers.IsFormat(currentSubSchema.format, stringValue) { + result.addError( + new(DoesNotMatchFormatError), + context, + value, + ErrorDetails{"format": currentSubSchema.format}, + ) + } + } + + result.incrementScore() +} + +func (v *subSchema) validateNumber(currentSubSchema *subSchema, value interface{}, result *Result, context *jsonContext) { + + // Ignore non numbers + if !isJsonNumber(value) { + return + } + + if internalLogEnabled { + internalLog("validateNumber %s", context.String()) + internalLog(" %v", value) + } + + number := value.(json.Number) + float64Value, _ := number.Float64() + + // multipleOf: + if currentSubSchema.multipleOf != nil { + + if !isFloat64AnInteger(float64Value / *currentSubSchema.multipleOf) { + result.addError( + new(MultipleOfError), + context, + resultErrorFormatJsonNumber(number), + ErrorDetails{"multiple": *currentSubSchema.multipleOf}, + ) + } + } + + //maximum & exclusiveMaximum: + if currentSubSchema.maximum != nil { + if currentSubSchema.exclusiveMaximum { + if float64Value >= *currentSubSchema.maximum { + result.addError( + new(NumberLTError), + context, + resultErrorFormatJsonNumber(number), + ErrorDetails{ + "max": resultErrorFormatNumber(*currentSubSchema.maximum), + }, + ) + } + } else { + if float64Value > *currentSubSchema.maximum { + result.addError( + new(NumberLTEError), + context, + resultErrorFormatJsonNumber(number), + ErrorDetails{ + "max": resultErrorFormatNumber(*currentSubSchema.maximum), + }, + ) + } + } + } + + //minimum & exclusiveMinimum: + if currentSubSchema.minimum != nil { + if currentSubSchema.exclusiveMinimum { + if float64Value <= *currentSubSchema.minimum { + result.addError( + new(NumberGTError), + context, + resultErrorFormatJsonNumber(number), + ErrorDetails{ + "min": resultErrorFormatNumber(*currentSubSchema.minimum), + }, + ) + } + } else { + if float64Value < *currentSubSchema.minimum { + result.addError( + new(NumberGTEError), + context, + resultErrorFormatJsonNumber(number), + ErrorDetails{ + "min": resultErrorFormatNumber(*currentSubSchema.minimum), + }, + ) + } + } + } + + result.incrementScore() +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/LICENSE b/components/engine/vendor/gopkg.in/yaml.v2/LICENSE new file mode 100644 index 0000000000..a68e67f01b --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/LICENSE @@ -0,0 +1,188 @@ + +Copyright (c) 2011-2014 - Canonical Inc. + +This software is licensed under the LGPLv3, included below. + +As a special exception to the GNU Lesser General Public License version 3 +("LGPL3"), the copyright holders of this Library give you permission to +convey to a third party a Combined Work that links statically or dynamically +to this Library without providing any Minimal Corresponding Source or +Minimal Application Code as set out in 4d or providing the installation +information set out in section 4e, provided that you comply with the other +provisions of LGPL3 and provided that you meet, for the Application the +terms and conditions of the license(s) which apply to the Application. + +Except as stated in this special exception, the provisions of LGPL3 will +continue to comply in full to this Library. If you modify this Library, you +may apply this exception to your version of this Library, but you are not +obliged to do so. If you do not wish to do so, delete this exception +statement from your version. This exception does not (and cannot) modify any +license terms which apply to the Application, with which you must still +comply. + + + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. The particular version of the Library +with which the Combined Work was made is also called the "Linked +Version". + + The "Minimal Corresponding Source" for a Combined Work means the +Corresponding Source for the Combined Work, excluding any source code +for portions of the Combined Work that, considered in isolation, are +based on the Application, and not on the Linked Version. + + The "Corresponding Application Code" for a Combined Work means the +object code and/or source code for the Application, including any data +and utility programs needed for reproducing the Combined Work from the +Application, but excluding the System Libraries of the Combined Work. + + 1. Exception to Section 3 of the GNU GPL. + + You may convey a covered work under sections 3 and 4 of this License +without being bound by section 3 of the GNU GPL. + + 2. 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Combined Works. + + You may convey a Combined Work under terms of your choice that, +taken together, effectively do not restrict modification of the +portions of the Library contained in the Combined Work and reverse +engineering for debugging such modifications, if you also do each of +the following: + + a) Give prominent notice with each copy of the Combined Work that + the Library is used in it and that the Library and its use are + covered by this License. + + b) Accompany the Combined Work with a copy of the GNU GPL and this license + document. + + c) For a Combined Work that displays copyright notices during + execution, include the copyright notice for the Library among + these notices, as well as a reference directing the user to the + copies of the GNU GPL and this license document. + + d) Do one of the following: + + 0) Convey the Minimal Corresponding Source under the terms of this + License, and the Corresponding Application Code in a form + suitable for, and under terms that permit, the user to + recombine or relink the Application with a modified version of + the Linked Version to produce a modified Combined Work, in the + manner specified by section 6 of the GNU GPL for conveying + Corresponding Source. + + 1) Use a suitable shared library mechanism for linking with the + Library. 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Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/components/engine/vendor/gopkg.in/yaml.v2/apic.go b/components/engine/vendor/gopkg.in/yaml.v2/apic.go new file mode 100644 index 0000000000..95ec014e8c --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/apic.go @@ -0,0 +1,742 @@ +package yaml + +import ( + "io" + "os" +) + +func yaml_insert_token(parser *yaml_parser_t, pos int, token *yaml_token_t) { + //fmt.Println("yaml_insert_token", "pos:", pos, "typ:", token.typ, "head:", parser.tokens_head, "len:", len(parser.tokens)) + + // Check if we can move the queue at the beginning of the buffer. + if parser.tokens_head > 0 && len(parser.tokens) == cap(parser.tokens) { + if parser.tokens_head != len(parser.tokens) { + copy(parser.tokens, parser.tokens[parser.tokens_head:]) + } + parser.tokens = parser.tokens[:len(parser.tokens)-parser.tokens_head] + parser.tokens_head = 0 + } + parser.tokens = append(parser.tokens, *token) + if pos < 0 { + return + } + copy(parser.tokens[parser.tokens_head+pos+1:], parser.tokens[parser.tokens_head+pos:]) + parser.tokens[parser.tokens_head+pos] = *token +} + +// Create a new parser object. +func yaml_parser_initialize(parser *yaml_parser_t) bool { + *parser = yaml_parser_t{ + raw_buffer: make([]byte, 0, input_raw_buffer_size), + buffer: make([]byte, 0, input_buffer_size), + } + return true +} + +// Destroy a parser object. +func yaml_parser_delete(parser *yaml_parser_t) { + *parser = yaml_parser_t{} +} + +// String read handler. +func yaml_string_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) { + if parser.input_pos == len(parser.input) { + return 0, io.EOF + } + n = copy(buffer, parser.input[parser.input_pos:]) + parser.input_pos += n + return n, nil +} + +// File read handler. +func yaml_file_read_handler(parser *yaml_parser_t, buffer []byte) (n int, err error) { + return parser.input_file.Read(buffer) +} + +// Set a string input. +func yaml_parser_set_input_string(parser *yaml_parser_t, input []byte) { + if parser.read_handler != nil { + panic("must set the input source only once") + } + parser.read_handler = yaml_string_read_handler + parser.input = input + parser.input_pos = 0 +} + +// Set a file input. +func yaml_parser_set_input_file(parser *yaml_parser_t, file *os.File) { + if parser.read_handler != nil { + panic("must set the input source only once") + } + parser.read_handler = yaml_file_read_handler + parser.input_file = file +} + +// Set the source encoding. +func yaml_parser_set_encoding(parser *yaml_parser_t, encoding yaml_encoding_t) { + if parser.encoding != yaml_ANY_ENCODING { + panic("must set the encoding only once") + } + parser.encoding = encoding +} + +// Create a new emitter object. +func yaml_emitter_initialize(emitter *yaml_emitter_t) bool { + *emitter = yaml_emitter_t{ + buffer: make([]byte, output_buffer_size), + raw_buffer: make([]byte, 0, output_raw_buffer_size), + states: make([]yaml_emitter_state_t, 0, initial_stack_size), + events: make([]yaml_event_t, 0, initial_queue_size), + } + return true +} + +// Destroy an emitter object. +func yaml_emitter_delete(emitter *yaml_emitter_t) { + *emitter = yaml_emitter_t{} +} + +// String write handler. +func yaml_string_write_handler(emitter *yaml_emitter_t, buffer []byte) error { + *emitter.output_buffer = append(*emitter.output_buffer, buffer...) + return nil +} + +// File write handler. +func yaml_file_write_handler(emitter *yaml_emitter_t, buffer []byte) error { + _, err := emitter.output_file.Write(buffer) + return err +} + +// Set a string output. +func yaml_emitter_set_output_string(emitter *yaml_emitter_t, output_buffer *[]byte) { + if emitter.write_handler != nil { + panic("must set the output target only once") + } + emitter.write_handler = yaml_string_write_handler + emitter.output_buffer = output_buffer +} + +// Set a file output. +func yaml_emitter_set_output_file(emitter *yaml_emitter_t, file io.Writer) { + if emitter.write_handler != nil { + panic("must set the output target only once") + } + emitter.write_handler = yaml_file_write_handler + emitter.output_file = file +} + +// Set the output encoding. +func yaml_emitter_set_encoding(emitter *yaml_emitter_t, encoding yaml_encoding_t) { + if emitter.encoding != yaml_ANY_ENCODING { + panic("must set the output encoding only once") + } + emitter.encoding = encoding +} + +// Set the canonical output style. +func yaml_emitter_set_canonical(emitter *yaml_emitter_t, canonical bool) { + emitter.canonical = canonical +} + +//// Set the indentation increment. +func yaml_emitter_set_indent(emitter *yaml_emitter_t, indent int) { + if indent < 2 || indent > 9 { + indent = 2 + } + emitter.best_indent = indent +} + +// Set the preferred line width. +func yaml_emitter_set_width(emitter *yaml_emitter_t, width int) { + if width < 0 { + width = -1 + } + emitter.best_width = width +} + +// Set if unescaped non-ASCII characters are allowed. +func yaml_emitter_set_unicode(emitter *yaml_emitter_t, unicode bool) { + emitter.unicode = unicode +} + +// Set the preferred line break character. +func yaml_emitter_set_break(emitter *yaml_emitter_t, line_break yaml_break_t) { + emitter.line_break = line_break +} + +///* +// * Destroy a token object. +// */ +// +//YAML_DECLARE(void) +//yaml_token_delete(yaml_token_t *token) +//{ +// assert(token); // Non-NULL token object expected. +// +// switch (token.type) +// { +// case YAML_TAG_DIRECTIVE_TOKEN: +// yaml_free(token.data.tag_directive.handle); +// yaml_free(token.data.tag_directive.prefix); +// break; +// +// case YAML_ALIAS_TOKEN: +// yaml_free(token.data.alias.value); +// break; +// +// case YAML_ANCHOR_TOKEN: +// yaml_free(token.data.anchor.value); +// break; +// +// case YAML_TAG_TOKEN: +// yaml_free(token.data.tag.handle); +// yaml_free(token.data.tag.suffix); +// break; +// +// case YAML_SCALAR_TOKEN: +// yaml_free(token.data.scalar.value); +// break; +// +// default: +// break; +// } +// +// memset(token, 0, sizeof(yaml_token_t)); +//} +// +///* +// * Check if a string is a valid UTF-8 sequence. +// * +// * Check 'reader.c' for more details on UTF-8 encoding. +// */ +// +//static int +//yaml_check_utf8(yaml_char_t *start, size_t length) +//{ +// yaml_char_t *end = start+length; +// yaml_char_t *pointer = start; +// +// while (pointer < end) { +// unsigned char octet; +// unsigned int width; +// unsigned int value; +// size_t k; +// +// octet = pointer[0]; +// width = (octet & 0x80) == 0x00 ? 1 : +// (octet & 0xE0) == 0xC0 ? 2 : +// (octet & 0xF0) == 0xE0 ? 3 : +// (octet & 0xF8) == 0xF0 ? 4 : 0; +// value = (octet & 0x80) == 0x00 ? octet & 0x7F : +// (octet & 0xE0) == 0xC0 ? octet & 0x1F : +// (octet & 0xF0) == 0xE0 ? octet & 0x0F : +// (octet & 0xF8) == 0xF0 ? octet & 0x07 : 0; +// if (!width) return 0; +// if (pointer+width > end) return 0; +// for (k = 1; k < width; k ++) { +// octet = pointer[k]; +// if ((octet & 0xC0) != 0x80) return 0; +// value = (value << 6) + (octet & 0x3F); +// } +// if (!((width == 1) || +// (width == 2 && value >= 0x80) || +// (width == 3 && value >= 0x800) || +// (width == 4 && value >= 0x10000))) return 0; +// +// pointer += width; +// } +// +// return 1; +//} +// + +// Create STREAM-START. +func yaml_stream_start_event_initialize(event *yaml_event_t, encoding yaml_encoding_t) bool { + *event = yaml_event_t{ + typ: yaml_STREAM_START_EVENT, + encoding: encoding, + } + return true +} + +// Create STREAM-END. +func yaml_stream_end_event_initialize(event *yaml_event_t) bool { + *event = yaml_event_t{ + typ: yaml_STREAM_END_EVENT, + } + return true +} + +// Create DOCUMENT-START. +func yaml_document_start_event_initialize(event *yaml_event_t, version_directive *yaml_version_directive_t, + tag_directives []yaml_tag_directive_t, implicit bool) bool { + *event = yaml_event_t{ + typ: yaml_DOCUMENT_START_EVENT, + version_directive: version_directive, + tag_directives: tag_directives, + implicit: implicit, + } + return true +} + +// Create DOCUMENT-END. +func yaml_document_end_event_initialize(event *yaml_event_t, implicit bool) bool { + *event = yaml_event_t{ + typ: yaml_DOCUMENT_END_EVENT, + implicit: implicit, + } + return true +} + +///* +// * Create ALIAS. +// */ +// +//YAML_DECLARE(int) +//yaml_alias_event_initialize(event *yaml_event_t, anchor *yaml_char_t) +//{ +// mark yaml_mark_t = { 0, 0, 0 } +// anchor_copy *yaml_char_t = NULL +// +// assert(event) // Non-NULL event object is expected. +// assert(anchor) // Non-NULL anchor is expected. +// +// if (!yaml_check_utf8(anchor, strlen((char *)anchor))) return 0 +// +// anchor_copy = yaml_strdup(anchor) +// if (!anchor_copy) +// return 0 +// +// ALIAS_EVENT_INIT(*event, anchor_copy, mark, mark) +// +// return 1 +//} + +// Create SCALAR. +func yaml_scalar_event_initialize(event *yaml_event_t, anchor, tag, value []byte, plain_implicit, quoted_implicit bool, style yaml_scalar_style_t) bool { + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + anchor: anchor, + tag: tag, + value: value, + implicit: plain_implicit, + quoted_implicit: quoted_implicit, + style: yaml_style_t(style), + } + return true +} + +// Create SEQUENCE-START. +func yaml_sequence_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_sequence_style_t) bool { + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(style), + } + return true +} + +// Create SEQUENCE-END. +func yaml_sequence_end_event_initialize(event *yaml_event_t) bool { + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + } + return true +} + +// Create MAPPING-START. +func yaml_mapping_start_event_initialize(event *yaml_event_t, anchor, tag []byte, implicit bool, style yaml_mapping_style_t) bool { + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(style), + } + return true +} + +// Create MAPPING-END. +func yaml_mapping_end_event_initialize(event *yaml_event_t) bool { + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + } + return true +} + +// Destroy an event object. +func yaml_event_delete(event *yaml_event_t) { + *event = yaml_event_t{} +} + +///* +// * Create a document object. +// */ +// +//YAML_DECLARE(int) +//yaml_document_initialize(document *yaml_document_t, +// version_directive *yaml_version_directive_t, +// tag_directives_start *yaml_tag_directive_t, +// tag_directives_end *yaml_tag_directive_t, +// start_implicit int, end_implicit int) +//{ +// struct { +// error yaml_error_type_t +// } context +// struct { +// start *yaml_node_t +// end *yaml_node_t +// top *yaml_node_t +// } nodes = { NULL, NULL, NULL } +// version_directive_copy *yaml_version_directive_t = NULL +// struct { +// start *yaml_tag_directive_t +// end *yaml_tag_directive_t +// top *yaml_tag_directive_t +// } tag_directives_copy = { NULL, NULL, NULL } +// value yaml_tag_directive_t = { NULL, NULL } +// mark yaml_mark_t = { 0, 0, 0 } +// +// assert(document) // Non-NULL document object is expected. +// assert((tag_directives_start && tag_directives_end) || +// (tag_directives_start == tag_directives_end)) +// // Valid tag directives are expected. +// +// if (!STACK_INIT(&context, nodes, INITIAL_STACK_SIZE)) goto error +// +// if (version_directive) { +// version_directive_copy = yaml_malloc(sizeof(yaml_version_directive_t)) +// if (!version_directive_copy) goto error +// version_directive_copy.major = version_directive.major +// version_directive_copy.minor = version_directive.minor +// } +// +// if (tag_directives_start != tag_directives_end) { +// tag_directive *yaml_tag_directive_t +// if (!STACK_INIT(&context, tag_directives_copy, INITIAL_STACK_SIZE)) +// goto error +// for (tag_directive = tag_directives_start +// tag_directive != tag_directives_end; tag_directive ++) { +// assert(tag_directive.handle) +// assert(tag_directive.prefix) +// if (!yaml_check_utf8(tag_directive.handle, +// strlen((char *)tag_directive.handle))) +// goto error +// if (!yaml_check_utf8(tag_directive.prefix, +// strlen((char *)tag_directive.prefix))) +// goto error +// value.handle = yaml_strdup(tag_directive.handle) +// value.prefix = yaml_strdup(tag_directive.prefix) +// if (!value.handle || !value.prefix) goto error +// if (!PUSH(&context, tag_directives_copy, value)) +// goto error +// value.handle = NULL +// value.prefix = NULL +// } +// } +// +// DOCUMENT_INIT(*document, nodes.start, nodes.end, version_directive_copy, +// tag_directives_copy.start, tag_directives_copy.top, +// start_implicit, end_implicit, mark, mark) +// +// return 1 +// +//error: +// STACK_DEL(&context, nodes) +// yaml_free(version_directive_copy) +// while (!STACK_EMPTY(&context, tag_directives_copy)) { +// value yaml_tag_directive_t = POP(&context, tag_directives_copy) +// yaml_free(value.handle) +// yaml_free(value.prefix) +// } +// STACK_DEL(&context, tag_directives_copy) +// yaml_free(value.handle) +// yaml_free(value.prefix) +// +// return 0 +//} +// +///* +// * Destroy a document object. +// */ +// +//YAML_DECLARE(void) +//yaml_document_delete(document *yaml_document_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// tag_directive *yaml_tag_directive_t +// +// context.error = YAML_NO_ERROR // Eliminate a compliler warning. +// +// assert(document) // Non-NULL document object is expected. +// +// while (!STACK_EMPTY(&context, document.nodes)) { +// node yaml_node_t = POP(&context, document.nodes) +// yaml_free(node.tag) +// switch (node.type) { +// case YAML_SCALAR_NODE: +// yaml_free(node.data.scalar.value) +// break +// case YAML_SEQUENCE_NODE: +// STACK_DEL(&context, node.data.sequence.items) +// break +// case YAML_MAPPING_NODE: +// STACK_DEL(&context, node.data.mapping.pairs) +// break +// default: +// assert(0) // Should not happen. +// } +// } +// STACK_DEL(&context, document.nodes) +// +// yaml_free(document.version_directive) +// for (tag_directive = document.tag_directives.start +// tag_directive != document.tag_directives.end +// tag_directive++) { +// yaml_free(tag_directive.handle) +// yaml_free(tag_directive.prefix) +// } +// yaml_free(document.tag_directives.start) +// +// memset(document, 0, sizeof(yaml_document_t)) +//} +// +///** +// * Get a document node. +// */ +// +//YAML_DECLARE(yaml_node_t *) +//yaml_document_get_node(document *yaml_document_t, index int) +//{ +// assert(document) // Non-NULL document object is expected. +// +// if (index > 0 && document.nodes.start + index <= document.nodes.top) { +// return document.nodes.start + index - 1 +// } +// return NULL +//} +// +///** +// * Get the root object. +// */ +// +//YAML_DECLARE(yaml_node_t *) +//yaml_document_get_root_node(document *yaml_document_t) +//{ +// assert(document) // Non-NULL document object is expected. +// +// if (document.nodes.top != document.nodes.start) { +// return document.nodes.start +// } +// return NULL +//} +// +///* +// * Add a scalar node to a document. +// */ +// +//YAML_DECLARE(int) +//yaml_document_add_scalar(document *yaml_document_t, +// tag *yaml_char_t, value *yaml_char_t, length int, +// style yaml_scalar_style_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// mark yaml_mark_t = { 0, 0, 0 } +// tag_copy *yaml_char_t = NULL +// value_copy *yaml_char_t = NULL +// node yaml_node_t +// +// assert(document) // Non-NULL document object is expected. +// assert(value) // Non-NULL value is expected. +// +// if (!tag) { +// tag = (yaml_char_t *)YAML_DEFAULT_SCALAR_TAG +// } +// +// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error +// tag_copy = yaml_strdup(tag) +// if (!tag_copy) goto error +// +// if (length < 0) { +// length = strlen((char *)value) +// } +// +// if (!yaml_check_utf8(value, length)) goto error +// value_copy = yaml_malloc(length+1) +// if (!value_copy) goto error +// memcpy(value_copy, value, length) +// value_copy[length] = '\0' +// +// SCALAR_NODE_INIT(node, tag_copy, value_copy, length, style, mark, mark) +// if (!PUSH(&context, document.nodes, node)) goto error +// +// return document.nodes.top - document.nodes.start +// +//error: +// yaml_free(tag_copy) +// yaml_free(value_copy) +// +// return 0 +//} +// +///* +// * Add a sequence node to a document. +// */ +// +//YAML_DECLARE(int) +//yaml_document_add_sequence(document *yaml_document_t, +// tag *yaml_char_t, style yaml_sequence_style_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// mark yaml_mark_t = { 0, 0, 0 } +// tag_copy *yaml_char_t = NULL +// struct { +// start *yaml_node_item_t +// end *yaml_node_item_t +// top *yaml_node_item_t +// } items = { NULL, NULL, NULL } +// node yaml_node_t +// +// assert(document) // Non-NULL document object is expected. +// +// if (!tag) { +// tag = (yaml_char_t *)YAML_DEFAULT_SEQUENCE_TAG +// } +// +// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error +// tag_copy = yaml_strdup(tag) +// if (!tag_copy) goto error +// +// if (!STACK_INIT(&context, items, INITIAL_STACK_SIZE)) goto error +// +// SEQUENCE_NODE_INIT(node, tag_copy, items.start, items.end, +// style, mark, mark) +// if (!PUSH(&context, document.nodes, node)) goto error +// +// return document.nodes.top - document.nodes.start +// +//error: +// STACK_DEL(&context, items) +// yaml_free(tag_copy) +// +// return 0 +//} +// +///* +// * Add a mapping node to a document. +// */ +// +//YAML_DECLARE(int) +//yaml_document_add_mapping(document *yaml_document_t, +// tag *yaml_char_t, style yaml_mapping_style_t) +//{ +// struct { +// error yaml_error_type_t +// } context +// mark yaml_mark_t = { 0, 0, 0 } +// tag_copy *yaml_char_t = NULL +// struct { +// start *yaml_node_pair_t +// end *yaml_node_pair_t +// top *yaml_node_pair_t +// } pairs = { NULL, NULL, NULL } +// node yaml_node_t +// +// assert(document) // Non-NULL document object is expected. +// +// if (!tag) { +// tag = (yaml_char_t *)YAML_DEFAULT_MAPPING_TAG +// } +// +// if (!yaml_check_utf8(tag, strlen((char *)tag))) goto error +// tag_copy = yaml_strdup(tag) +// if (!tag_copy) goto error +// +// if (!STACK_INIT(&context, pairs, INITIAL_STACK_SIZE)) goto error +// +// MAPPING_NODE_INIT(node, tag_copy, pairs.start, pairs.end, +// style, mark, mark) +// if (!PUSH(&context, document.nodes, node)) goto error +// +// return document.nodes.top - document.nodes.start +// +//error: +// STACK_DEL(&context, pairs) +// yaml_free(tag_copy) +// +// return 0 +//} +// +///* +// * Append an item to a sequence node. +// */ +// +//YAML_DECLARE(int) +//yaml_document_append_sequence_item(document *yaml_document_t, +// sequence int, item int) +//{ +// struct { +// error yaml_error_type_t +// } context +// +// assert(document) // Non-NULL document is required. +// assert(sequence > 0 +// && document.nodes.start + sequence <= document.nodes.top) +// // Valid sequence id is required. +// assert(document.nodes.start[sequence-1].type == YAML_SEQUENCE_NODE) +// // A sequence node is required. +// assert(item > 0 && document.nodes.start + item <= document.nodes.top) +// // Valid item id is required. +// +// if (!PUSH(&context, +// document.nodes.start[sequence-1].data.sequence.items, item)) +// return 0 +// +// return 1 +//} +// +///* +// * Append a pair of a key and a value to a mapping node. +// */ +// +//YAML_DECLARE(int) +//yaml_document_append_mapping_pair(document *yaml_document_t, +// mapping int, key int, value int) +//{ +// struct { +// error yaml_error_type_t +// } context +// +// pair yaml_node_pair_t +// +// assert(document) // Non-NULL document is required. +// assert(mapping > 0 +// && document.nodes.start + mapping <= document.nodes.top) +// // Valid mapping id is required. +// assert(document.nodes.start[mapping-1].type == YAML_MAPPING_NODE) +// // A mapping node is required. +// assert(key > 0 && document.nodes.start + key <= document.nodes.top) +// // Valid key id is required. +// assert(value > 0 && document.nodes.start + value <= document.nodes.top) +// // Valid value id is required. +// +// pair.key = key +// pair.value = value +// +// if (!PUSH(&context, +// document.nodes.start[mapping-1].data.mapping.pairs, pair)) +// return 0 +// +// return 1 +//} +// +// diff --git a/components/engine/vendor/gopkg.in/yaml.v2/decode.go b/components/engine/vendor/gopkg.in/yaml.v2/decode.go new file mode 100644 index 0000000000..085cddc44b --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/decode.go @@ -0,0 +1,683 @@ +package yaml + +import ( + "encoding" + "encoding/base64" + "fmt" + "math" + "reflect" + "strconv" + "time" +) + +const ( + documentNode = 1 << iota + mappingNode + sequenceNode + scalarNode + aliasNode +) + +type node struct { + kind int + line, column int + tag string + value string + implicit bool + children []*node + anchors map[string]*node +} + +// ---------------------------------------------------------------------------- +// Parser, produces a node tree out of a libyaml event stream. + +type parser struct { + parser yaml_parser_t + event yaml_event_t + doc *node +} + +func newParser(b []byte) *parser { + p := parser{} + if !yaml_parser_initialize(&p.parser) { + panic("failed to initialize YAML emitter") + } + + if len(b) == 0 { + b = []byte{'\n'} + } + + yaml_parser_set_input_string(&p.parser, b) + + p.skip() + if p.event.typ != yaml_STREAM_START_EVENT { + panic("expected stream start event, got " + strconv.Itoa(int(p.event.typ))) + } + p.skip() + return &p +} + +func (p *parser) destroy() { + if p.event.typ != yaml_NO_EVENT { + yaml_event_delete(&p.event) + } + yaml_parser_delete(&p.parser) +} + +func (p *parser) skip() { + if p.event.typ != yaml_NO_EVENT { + if p.event.typ == yaml_STREAM_END_EVENT { + failf("attempted to go past the end of stream; corrupted value?") + } + yaml_event_delete(&p.event) + } + if !yaml_parser_parse(&p.parser, &p.event) { + p.fail() + } +} + +func (p *parser) fail() { + var where string + var line int + if p.parser.problem_mark.line != 0 { + line = p.parser.problem_mark.line + } else if p.parser.context_mark.line != 0 { + line = p.parser.context_mark.line + } + if line != 0 { + where = "line " + strconv.Itoa(line) + ": " + } + var msg string + if len(p.parser.problem) > 0 { + msg = p.parser.problem + } else { + msg = "unknown problem parsing YAML content" + } + failf("%s%s", where, msg) +} + +func (p *parser) anchor(n *node, anchor []byte) { + if anchor != nil { + p.doc.anchors[string(anchor)] = n + } +} + +func (p *parser) parse() *node { + switch p.event.typ { + case yaml_SCALAR_EVENT: + return p.scalar() + case yaml_ALIAS_EVENT: + return p.alias() + case yaml_MAPPING_START_EVENT: + return p.mapping() + case yaml_SEQUENCE_START_EVENT: + return p.sequence() + case yaml_DOCUMENT_START_EVENT: + return p.document() + case yaml_STREAM_END_EVENT: + // Happens when attempting to decode an empty buffer. + return nil + default: + panic("attempted to parse unknown event: " + strconv.Itoa(int(p.event.typ))) + } + panic("unreachable") +} + +func (p *parser) node(kind int) *node { + return &node{ + kind: kind, + line: p.event.start_mark.line, + column: p.event.start_mark.column, + } +} + +func (p *parser) document() *node { + n := p.node(documentNode) + n.anchors = make(map[string]*node) + p.doc = n + p.skip() + n.children = append(n.children, p.parse()) + if p.event.typ != yaml_DOCUMENT_END_EVENT { + panic("expected end of document event but got " + strconv.Itoa(int(p.event.typ))) + } + p.skip() + return n +} + +func (p *parser) alias() *node { + n := p.node(aliasNode) + n.value = string(p.event.anchor) + p.skip() + return n +} + +func (p *parser) scalar() *node { + n := p.node(scalarNode) + n.value = string(p.event.value) + n.tag = string(p.event.tag) + n.implicit = p.event.implicit + p.anchor(n, p.event.anchor) + p.skip() + return n +} + +func (p *parser) sequence() *node { + n := p.node(sequenceNode) + p.anchor(n, p.event.anchor) + p.skip() + for p.event.typ != yaml_SEQUENCE_END_EVENT { + n.children = append(n.children, p.parse()) + } + p.skip() + return n +} + +func (p *parser) mapping() *node { + n := p.node(mappingNode) + p.anchor(n, p.event.anchor) + p.skip() + for p.event.typ != yaml_MAPPING_END_EVENT { + n.children = append(n.children, p.parse(), p.parse()) + } + p.skip() + return n +} + +// ---------------------------------------------------------------------------- +// Decoder, unmarshals a node into a provided value. + +type decoder struct { + doc *node + aliases map[string]bool + mapType reflect.Type + terrors []string +} + +var ( + mapItemType = reflect.TypeOf(MapItem{}) + durationType = reflect.TypeOf(time.Duration(0)) + defaultMapType = reflect.TypeOf(map[interface{}]interface{}{}) + ifaceType = defaultMapType.Elem() +) + +func newDecoder() *decoder { + d := &decoder{mapType: defaultMapType} + d.aliases = make(map[string]bool) + return d +} + +func (d *decoder) terror(n *node, tag string, out reflect.Value) { + if n.tag != "" { + tag = n.tag + } + value := n.value + if tag != yaml_SEQ_TAG && tag != yaml_MAP_TAG { + if len(value) > 10 { + value = " `" + value[:7] + "...`" + } else { + value = " `" + value + "`" + } + } + d.terrors = append(d.terrors, fmt.Sprintf("line %d: cannot unmarshal %s%s into %s", n.line+1, shortTag(tag), value, out.Type())) +} + +func (d *decoder) callUnmarshaler(n *node, u Unmarshaler) (good bool) { + terrlen := len(d.terrors) + err := u.UnmarshalYAML(func(v interface{}) (err error) { + defer handleErr(&err) + d.unmarshal(n, reflect.ValueOf(v)) + if len(d.terrors) > terrlen { + issues := d.terrors[terrlen:] + d.terrors = d.terrors[:terrlen] + return &TypeError{issues} + } + return nil + }) + if e, ok := err.(*TypeError); ok { + d.terrors = append(d.terrors, e.Errors...) + return false + } + if err != nil { + fail(err) + } + return true +} + +// d.prepare initializes and dereferences pointers and calls UnmarshalYAML +// if a value is found to implement it. +// It returns the initialized and dereferenced out value, whether +// unmarshalling was already done by UnmarshalYAML, and if so whether +// its types unmarshalled appropriately. +// +// If n holds a null value, prepare returns before doing anything. +func (d *decoder) prepare(n *node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) { + if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "") { + return out, false, false + } + again := true + for again { + again = false + if out.Kind() == reflect.Ptr { + if out.IsNil() { + out.Set(reflect.New(out.Type().Elem())) + } + out = out.Elem() + again = true + } + if out.CanAddr() { + if u, ok := out.Addr().Interface().(Unmarshaler); ok { + good = d.callUnmarshaler(n, u) + return out, true, good + } + } + } + return out, false, false +} + +func (d *decoder) unmarshal(n *node, out reflect.Value) (good bool) { + switch n.kind { + case documentNode: + return d.document(n, out) + case aliasNode: + return d.alias(n, out) + } + out, unmarshaled, good := d.prepare(n, out) + if unmarshaled { + return good + } + switch n.kind { + case scalarNode: + good = d.scalar(n, out) + case mappingNode: + good = d.mapping(n, out) + case sequenceNode: + good = d.sequence(n, out) + default: + panic("internal error: unknown node kind: " + strconv.Itoa(n.kind)) + } + return good +} + +func (d *decoder) document(n *node, out reflect.Value) (good bool) { + if len(n.children) == 1 { + d.doc = n + d.unmarshal(n.children[0], out) + return true + } + return false +} + +func (d *decoder) alias(n *node, out reflect.Value) (good bool) { + an, ok := d.doc.anchors[n.value] + if !ok { + failf("unknown anchor '%s' referenced", n.value) + } + if d.aliases[n.value] { + failf("anchor '%s' value contains itself", n.value) + } + d.aliases[n.value] = true + good = d.unmarshal(an, out) + delete(d.aliases, n.value) + return good +} + +var zeroValue reflect.Value + +func resetMap(out reflect.Value) { + for _, k := range out.MapKeys() { + out.SetMapIndex(k, zeroValue) + } +} + +func (d *decoder) scalar(n *node, out reflect.Value) (good bool) { + var tag string + var resolved interface{} + if n.tag == "" && !n.implicit { + tag = yaml_STR_TAG + resolved = n.value + } else { + tag, resolved = resolve(n.tag, n.value) + if tag == yaml_BINARY_TAG { + data, err := base64.StdEncoding.DecodeString(resolved.(string)) + if err != nil { + failf("!!binary value contains invalid base64 data") + } + resolved = string(data) + } + } + if resolved == nil { + if out.Kind() == reflect.Map && !out.CanAddr() { + resetMap(out) + } else { + out.Set(reflect.Zero(out.Type())) + } + return true + } + if s, ok := resolved.(string); ok && out.CanAddr() { + if u, ok := out.Addr().Interface().(encoding.TextUnmarshaler); ok { + err := u.UnmarshalText([]byte(s)) + if err != nil { + fail(err) + } + return true + } + } + switch out.Kind() { + case reflect.String: + if tag == yaml_BINARY_TAG { + out.SetString(resolved.(string)) + good = true + } else if resolved != nil { + out.SetString(n.value) + good = true + } + case reflect.Interface: + if resolved == nil { + out.Set(reflect.Zero(out.Type())) + } else { + out.Set(reflect.ValueOf(resolved)) + } + good = true + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + switch resolved := resolved.(type) { + case int: + if !out.OverflowInt(int64(resolved)) { + out.SetInt(int64(resolved)) + good = true + } + case int64: + if !out.OverflowInt(resolved) { + out.SetInt(resolved) + good = true + } + case uint64: + if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) { + out.SetInt(int64(resolved)) + good = true + } + case float64: + if resolved <= math.MaxInt64 && !out.OverflowInt(int64(resolved)) { + out.SetInt(int64(resolved)) + good = true + } + case string: + if out.Type() == durationType { + d, err := time.ParseDuration(resolved) + if err == nil { + out.SetInt(int64(d)) + good = true + } + } + } + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + switch resolved := resolved.(type) { + case int: + if resolved >= 0 && !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + good = true + } + case int64: + if resolved >= 0 && !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + good = true + } + case uint64: + if !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + good = true + } + case float64: + if resolved <= math.MaxUint64 && !out.OverflowUint(uint64(resolved)) { + out.SetUint(uint64(resolved)) + good = true + } + } + case reflect.Bool: + switch resolved := resolved.(type) { + case bool: + out.SetBool(resolved) + good = true + } + case reflect.Float32, reflect.Float64: + switch resolved := resolved.(type) { + case int: + out.SetFloat(float64(resolved)) + good = true + case int64: + out.SetFloat(float64(resolved)) + good = true + case uint64: + out.SetFloat(float64(resolved)) + good = true + case float64: + out.SetFloat(resolved) + good = true + } + case reflect.Ptr: + if out.Type().Elem() == reflect.TypeOf(resolved) { + // TODO DOes this make sense? When is out a Ptr except when decoding a nil value? + elem := reflect.New(out.Type().Elem()) + elem.Elem().Set(reflect.ValueOf(resolved)) + out.Set(elem) + good = true + } + } + if !good { + d.terror(n, tag, out) + } + return good +} + +func settableValueOf(i interface{}) reflect.Value { + v := reflect.ValueOf(i) + sv := reflect.New(v.Type()).Elem() + sv.Set(v) + return sv +} + +func (d *decoder) sequence(n *node, out reflect.Value) (good bool) { + l := len(n.children) + + var iface reflect.Value + switch out.Kind() { + case reflect.Slice: + out.Set(reflect.MakeSlice(out.Type(), l, l)) + case reflect.Interface: + // No type hints. Will have to use a generic sequence. + iface = out + out = settableValueOf(make([]interface{}, l)) + default: + d.terror(n, yaml_SEQ_TAG, out) + return false + } + et := out.Type().Elem() + + j := 0 + for i := 0; i < l; i++ { + e := reflect.New(et).Elem() + if ok := d.unmarshal(n.children[i], e); ok { + out.Index(j).Set(e) + j++ + } + } + out.Set(out.Slice(0, j)) + if iface.IsValid() { + iface.Set(out) + } + return true +} + +func (d *decoder) mapping(n *node, out reflect.Value) (good bool) { + switch out.Kind() { + case reflect.Struct: + return d.mappingStruct(n, out) + case reflect.Slice: + return d.mappingSlice(n, out) + case reflect.Map: + // okay + case reflect.Interface: + if d.mapType.Kind() == reflect.Map { + iface := out + out = reflect.MakeMap(d.mapType) + iface.Set(out) + } else { + slicev := reflect.New(d.mapType).Elem() + if !d.mappingSlice(n, slicev) { + return false + } + out.Set(slicev) + return true + } + default: + d.terror(n, yaml_MAP_TAG, out) + return false + } + outt := out.Type() + kt := outt.Key() + et := outt.Elem() + + mapType := d.mapType + if outt.Key() == ifaceType && outt.Elem() == ifaceType { + d.mapType = outt + } + + if out.IsNil() { + out.Set(reflect.MakeMap(outt)) + } + l := len(n.children) + for i := 0; i < l; i += 2 { + if isMerge(n.children[i]) { + d.merge(n.children[i+1], out) + continue + } + k := reflect.New(kt).Elem() + if d.unmarshal(n.children[i], k) { + kkind := k.Kind() + if kkind == reflect.Interface { + kkind = k.Elem().Kind() + } + if kkind == reflect.Map || kkind == reflect.Slice { + failf("invalid map key: %#v", k.Interface()) + } + e := reflect.New(et).Elem() + if d.unmarshal(n.children[i+1], e) { + out.SetMapIndex(k, e) + } + } + } + d.mapType = mapType + return true +} + +func (d *decoder) mappingSlice(n *node, out reflect.Value) (good bool) { + outt := out.Type() + if outt.Elem() != mapItemType { + d.terror(n, yaml_MAP_TAG, out) + return false + } + + mapType := d.mapType + d.mapType = outt + + var slice []MapItem + var l = len(n.children) + for i := 0; i < l; i += 2 { + if isMerge(n.children[i]) { + d.merge(n.children[i+1], out) + continue + } + item := MapItem{} + k := reflect.ValueOf(&item.Key).Elem() + if d.unmarshal(n.children[i], k) { + v := reflect.ValueOf(&item.Value).Elem() + if d.unmarshal(n.children[i+1], v) { + slice = append(slice, item) + } + } + } + out.Set(reflect.ValueOf(slice)) + d.mapType = mapType + return true +} + +func (d *decoder) mappingStruct(n *node, out reflect.Value) (good bool) { + sinfo, err := getStructInfo(out.Type()) + if err != nil { + panic(err) + } + name := settableValueOf("") + l := len(n.children) + + var inlineMap reflect.Value + var elemType reflect.Type + if sinfo.InlineMap != -1 { + inlineMap = out.Field(sinfo.InlineMap) + inlineMap.Set(reflect.New(inlineMap.Type()).Elem()) + elemType = inlineMap.Type().Elem() + } + + for i := 0; i < l; i += 2 { + ni := n.children[i] + if isMerge(ni) { + d.merge(n.children[i+1], out) + continue + } + if !d.unmarshal(ni, name) { + continue + } + if info, ok := sinfo.FieldsMap[name.String()]; ok { + var field reflect.Value + if info.Inline == nil { + field = out.Field(info.Num) + } else { + field = out.FieldByIndex(info.Inline) + } + d.unmarshal(n.children[i+1], field) + } else if sinfo.InlineMap != -1 { + if inlineMap.IsNil() { + inlineMap.Set(reflect.MakeMap(inlineMap.Type())) + } + value := reflect.New(elemType).Elem() + d.unmarshal(n.children[i+1], value) + inlineMap.SetMapIndex(name, value) + } + } + return true +} + +func failWantMap() { + failf("map merge requires map or sequence of maps as the value") +} + +func (d *decoder) merge(n *node, out reflect.Value) { + switch n.kind { + case mappingNode: + d.unmarshal(n, out) + case aliasNode: + an, ok := d.doc.anchors[n.value] + if ok && an.kind != mappingNode { + failWantMap() + } + d.unmarshal(n, out) + case sequenceNode: + // Step backwards as earlier nodes take precedence. + for i := len(n.children) - 1; i >= 0; i-- { + ni := n.children[i] + if ni.kind == aliasNode { + an, ok := d.doc.anchors[ni.value] + if ok && an.kind != mappingNode { + failWantMap() + } + } else if ni.kind != mappingNode { + failWantMap() + } + d.unmarshal(ni, out) + } + default: + failWantMap() + } +} + +func isMerge(n *node) bool { + return n.kind == scalarNode && n.value == "<<" && (n.implicit == true || n.tag == yaml_MERGE_TAG) +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/emitterc.go b/components/engine/vendor/gopkg.in/yaml.v2/emitterc.go new file mode 100644 index 0000000000..2befd553ed --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/emitterc.go @@ -0,0 +1,1685 @@ +package yaml + +import ( + "bytes" +) + +// Flush the buffer if needed. +func flush(emitter *yaml_emitter_t) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) { + return yaml_emitter_flush(emitter) + } + return true +} + +// Put a character to the output buffer. +func put(emitter *yaml_emitter_t, value byte) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) { + return false + } + emitter.buffer[emitter.buffer_pos] = value + emitter.buffer_pos++ + emitter.column++ + return true +} + +// Put a line break to the output buffer. +func put_break(emitter *yaml_emitter_t) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) { + return false + } + switch emitter.line_break { + case yaml_CR_BREAK: + emitter.buffer[emitter.buffer_pos] = '\r' + emitter.buffer_pos += 1 + case yaml_LN_BREAK: + emitter.buffer[emitter.buffer_pos] = '\n' + emitter.buffer_pos += 1 + case yaml_CRLN_BREAK: + emitter.buffer[emitter.buffer_pos+0] = '\r' + emitter.buffer[emitter.buffer_pos+1] = '\n' + emitter.buffer_pos += 2 + default: + panic("unknown line break setting") + } + emitter.column = 0 + emitter.line++ + return true +} + +// Copy a character from a string into buffer. +func write(emitter *yaml_emitter_t, s []byte, i *int) bool { + if emitter.buffer_pos+5 >= len(emitter.buffer) && !yaml_emitter_flush(emitter) { + return false + } + p := emitter.buffer_pos + w := width(s[*i]) + switch w { + case 4: + emitter.buffer[p+3] = s[*i+3] + fallthrough + case 3: + emitter.buffer[p+2] = s[*i+2] + fallthrough + case 2: + emitter.buffer[p+1] = s[*i+1] + fallthrough + case 1: + emitter.buffer[p+0] = s[*i+0] + default: + panic("unknown character width") + } + emitter.column++ + emitter.buffer_pos += w + *i += w + return true +} + +// Write a whole string into buffer. +func write_all(emitter *yaml_emitter_t, s []byte) bool { + for i := 0; i < len(s); { + if !write(emitter, s, &i) { + return false + } + } + return true +} + +// Copy a line break character from a string into buffer. +func write_break(emitter *yaml_emitter_t, s []byte, i *int) bool { + if s[*i] == '\n' { + if !put_break(emitter) { + return false + } + *i++ + } else { + if !write(emitter, s, i) { + return false + } + emitter.column = 0 + emitter.line++ + } + return true +} + +// Set an emitter error and return false. +func yaml_emitter_set_emitter_error(emitter *yaml_emitter_t, problem string) bool { + emitter.error = yaml_EMITTER_ERROR + emitter.problem = problem + return false +} + +// Emit an event. +func yaml_emitter_emit(emitter *yaml_emitter_t, event *yaml_event_t) bool { + emitter.events = append(emitter.events, *event) + for !yaml_emitter_need_more_events(emitter) { + event := &emitter.events[emitter.events_head] + if !yaml_emitter_analyze_event(emitter, event) { + return false + } + if !yaml_emitter_state_machine(emitter, event) { + return false + } + yaml_event_delete(event) + emitter.events_head++ + } + return true +} + +// Check if we need to accumulate more events before emitting. +// +// We accumulate extra +// - 1 event for DOCUMENT-START +// - 2 events for SEQUENCE-START +// - 3 events for MAPPING-START +// +func yaml_emitter_need_more_events(emitter *yaml_emitter_t) bool { + if emitter.events_head == len(emitter.events) { + return true + } + var accumulate int + switch emitter.events[emitter.events_head].typ { + case yaml_DOCUMENT_START_EVENT: + accumulate = 1 + break + case yaml_SEQUENCE_START_EVENT: + accumulate = 2 + break + case yaml_MAPPING_START_EVENT: + accumulate = 3 + break + default: + return false + } + if len(emitter.events)-emitter.events_head > accumulate { + return false + } + var level int + for i := emitter.events_head; i < len(emitter.events); i++ { + switch emitter.events[i].typ { + case yaml_STREAM_START_EVENT, yaml_DOCUMENT_START_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT: + level++ + case yaml_STREAM_END_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_END_EVENT, yaml_MAPPING_END_EVENT: + level-- + } + if level == 0 { + return false + } + } + return true +} + +// Append a directive to the directives stack. +func yaml_emitter_append_tag_directive(emitter *yaml_emitter_t, value *yaml_tag_directive_t, allow_duplicates bool) bool { + for i := 0; i < len(emitter.tag_directives); i++ { + if bytes.Equal(value.handle, emitter.tag_directives[i].handle) { + if allow_duplicates { + return true + } + return yaml_emitter_set_emitter_error(emitter, "duplicate %TAG directive") + } + } + + // [Go] Do we actually need to copy this given garbage collection + // and the lack of deallocating destructors? + tag_copy := yaml_tag_directive_t{ + handle: make([]byte, len(value.handle)), + prefix: make([]byte, len(value.prefix)), + } + copy(tag_copy.handle, value.handle) + copy(tag_copy.prefix, value.prefix) + emitter.tag_directives = append(emitter.tag_directives, tag_copy) + return true +} + +// Increase the indentation level. +func yaml_emitter_increase_indent(emitter *yaml_emitter_t, flow, indentless bool) bool { + emitter.indents = append(emitter.indents, emitter.indent) + if emitter.indent < 0 { + if flow { + emitter.indent = emitter.best_indent + } else { + emitter.indent = 0 + } + } else if !indentless { + emitter.indent += emitter.best_indent + } + return true +} + +// State dispatcher. +func yaml_emitter_state_machine(emitter *yaml_emitter_t, event *yaml_event_t) bool { + switch emitter.state { + default: + case yaml_EMIT_STREAM_START_STATE: + return yaml_emitter_emit_stream_start(emitter, event) + + case yaml_EMIT_FIRST_DOCUMENT_START_STATE: + return yaml_emitter_emit_document_start(emitter, event, true) + + case yaml_EMIT_DOCUMENT_START_STATE: + return yaml_emitter_emit_document_start(emitter, event, false) + + case yaml_EMIT_DOCUMENT_CONTENT_STATE: + return yaml_emitter_emit_document_content(emitter, event) + + case yaml_EMIT_DOCUMENT_END_STATE: + return yaml_emitter_emit_document_end(emitter, event) + + case yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE: + return yaml_emitter_emit_flow_sequence_item(emitter, event, true) + + case yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE: + return yaml_emitter_emit_flow_sequence_item(emitter, event, false) + + case yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE: + return yaml_emitter_emit_flow_mapping_key(emitter, event, true) + + case yaml_EMIT_FLOW_MAPPING_KEY_STATE: + return yaml_emitter_emit_flow_mapping_key(emitter, event, false) + + case yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE: + return yaml_emitter_emit_flow_mapping_value(emitter, event, true) + + case yaml_EMIT_FLOW_MAPPING_VALUE_STATE: + return yaml_emitter_emit_flow_mapping_value(emitter, event, false) + + case yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE: + return yaml_emitter_emit_block_sequence_item(emitter, event, true) + + case yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE: + return yaml_emitter_emit_block_sequence_item(emitter, event, false) + + case yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE: + return yaml_emitter_emit_block_mapping_key(emitter, event, true) + + case yaml_EMIT_BLOCK_MAPPING_KEY_STATE: + return yaml_emitter_emit_block_mapping_key(emitter, event, false) + + case yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE: + return yaml_emitter_emit_block_mapping_value(emitter, event, true) + + case yaml_EMIT_BLOCK_MAPPING_VALUE_STATE: + return yaml_emitter_emit_block_mapping_value(emitter, event, false) + + case yaml_EMIT_END_STATE: + return yaml_emitter_set_emitter_error(emitter, "expected nothing after STREAM-END") + } + panic("invalid emitter state") +} + +// Expect STREAM-START. +func yaml_emitter_emit_stream_start(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if event.typ != yaml_STREAM_START_EVENT { + return yaml_emitter_set_emitter_error(emitter, "expected STREAM-START") + } + if emitter.encoding == yaml_ANY_ENCODING { + emitter.encoding = event.encoding + if emitter.encoding == yaml_ANY_ENCODING { + emitter.encoding = yaml_UTF8_ENCODING + } + } + if emitter.best_indent < 2 || emitter.best_indent > 9 { + emitter.best_indent = 2 + } + if emitter.best_width >= 0 && emitter.best_width <= emitter.best_indent*2 { + emitter.best_width = 80 + } + if emitter.best_width < 0 { + emitter.best_width = 1<<31 - 1 + } + if emitter.line_break == yaml_ANY_BREAK { + emitter.line_break = yaml_LN_BREAK + } + + emitter.indent = -1 + emitter.line = 0 + emitter.column = 0 + emitter.whitespace = true + emitter.indention = true + + if emitter.encoding != yaml_UTF8_ENCODING { + if !yaml_emitter_write_bom(emitter) { + return false + } + } + emitter.state = yaml_EMIT_FIRST_DOCUMENT_START_STATE + return true +} + +// Expect DOCUMENT-START or STREAM-END. +func yaml_emitter_emit_document_start(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + + if event.typ == yaml_DOCUMENT_START_EVENT { + + if event.version_directive != nil { + if !yaml_emitter_analyze_version_directive(emitter, event.version_directive) { + return false + } + } + + for i := 0; i < len(event.tag_directives); i++ { + tag_directive := &event.tag_directives[i] + if !yaml_emitter_analyze_tag_directive(emitter, tag_directive) { + return false + } + if !yaml_emitter_append_tag_directive(emitter, tag_directive, false) { + return false + } + } + + for i := 0; i < len(default_tag_directives); i++ { + tag_directive := &default_tag_directives[i] + if !yaml_emitter_append_tag_directive(emitter, tag_directive, true) { + return false + } + } + + implicit := event.implicit + if !first || emitter.canonical { + implicit = false + } + + if emitter.open_ended && (event.version_directive != nil || len(event.tag_directives) > 0) { + if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if event.version_directive != nil { + implicit = false + if !yaml_emitter_write_indicator(emitter, []byte("%YAML"), true, false, false) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte("1.1"), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if len(event.tag_directives) > 0 { + implicit = false + for i := 0; i < len(event.tag_directives); i++ { + tag_directive := &event.tag_directives[i] + if !yaml_emitter_write_indicator(emitter, []byte("%TAG"), true, false, false) { + return false + } + if !yaml_emitter_write_tag_handle(emitter, tag_directive.handle) { + return false + } + if !yaml_emitter_write_tag_content(emitter, tag_directive.prefix, true) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + } + + if yaml_emitter_check_empty_document(emitter) { + implicit = false + } + if !implicit { + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte("---"), true, false, false) { + return false + } + if emitter.canonical { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + } + + emitter.state = yaml_EMIT_DOCUMENT_CONTENT_STATE + return true + } + + if event.typ == yaml_STREAM_END_EVENT { + if emitter.open_ended { + if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_flush(emitter) { + return false + } + emitter.state = yaml_EMIT_END_STATE + return true + } + + return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-START or STREAM-END") +} + +// Expect the root node. +func yaml_emitter_emit_document_content(emitter *yaml_emitter_t, event *yaml_event_t) bool { + emitter.states = append(emitter.states, yaml_EMIT_DOCUMENT_END_STATE) + return yaml_emitter_emit_node(emitter, event, true, false, false, false) +} + +// Expect DOCUMENT-END. +func yaml_emitter_emit_document_end(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if event.typ != yaml_DOCUMENT_END_EVENT { + return yaml_emitter_set_emitter_error(emitter, "expected DOCUMENT-END") + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if !event.implicit { + // [Go] Allocate the slice elsewhere. + if !yaml_emitter_write_indicator(emitter, []byte("..."), true, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_flush(emitter) { + return false + } + emitter.state = yaml_EMIT_DOCUMENT_START_STATE + emitter.tag_directives = emitter.tag_directives[:0] + return true +} + +// Expect a flow item node. +func yaml_emitter_emit_flow_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + if first { + if !yaml_emitter_write_indicator(emitter, []byte{'['}, true, true, false) { + return false + } + if !yaml_emitter_increase_indent(emitter, true, false) { + return false + } + emitter.flow_level++ + } + + if event.typ == yaml_SEQUENCE_END_EVENT { + emitter.flow_level-- + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + if emitter.canonical && !first { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{']'}, false, false, false) { + return false + } + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + + return true + } + + if !first { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + + if emitter.canonical || emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + emitter.states = append(emitter.states, yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE) + return yaml_emitter_emit_node(emitter, event, false, true, false, false) +} + +// Expect a flow key node. +func yaml_emitter_emit_flow_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + if first { + if !yaml_emitter_write_indicator(emitter, []byte{'{'}, true, true, false) { + return false + } + if !yaml_emitter_increase_indent(emitter, true, false) { + return false + } + emitter.flow_level++ + } + + if event.typ == yaml_MAPPING_END_EVENT { + emitter.flow_level-- + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + if emitter.canonical && !first { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{'}'}, false, false, false) { + return false + } + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true + } + + if !first { + if !yaml_emitter_write_indicator(emitter, []byte{','}, false, false, false) { + return false + } + } + if emitter.canonical || emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + + if !emitter.canonical && yaml_emitter_check_simple_key(emitter) { + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, true) + } + if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, false) { + return false + } + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, false) +} + +// Expect a flow value node. +func yaml_emitter_emit_flow_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool { + if simple { + if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) { + return false + } + } else { + if emitter.canonical || emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, false) { + return false + } + } + emitter.states = append(emitter.states, yaml_EMIT_FLOW_MAPPING_KEY_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, false) +} + +// Expect a block item node. +func yaml_emitter_emit_block_sequence_item(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + if first { + if !yaml_emitter_increase_indent(emitter, false, emitter.mapping_context && !emitter.indention) { + return false + } + } + if event.typ == yaml_SEQUENCE_END_EVENT { + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte{'-'}, true, false, true) { + return false + } + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE) + return yaml_emitter_emit_node(emitter, event, false, true, false, false) +} + +// Expect a block key node. +func yaml_emitter_emit_block_mapping_key(emitter *yaml_emitter_t, event *yaml_event_t, first bool) bool { + if first { + if !yaml_emitter_increase_indent(emitter, false, false) { + return false + } + } + if event.typ == yaml_MAPPING_END_EVENT { + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true + } + if !yaml_emitter_write_indent(emitter) { + return false + } + if yaml_emitter_check_simple_key(emitter) { + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, true) + } + if !yaml_emitter_write_indicator(emitter, []byte{'?'}, true, false, true) { + return false + } + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_VALUE_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, false) +} + +// Expect a block value node. +func yaml_emitter_emit_block_mapping_value(emitter *yaml_emitter_t, event *yaml_event_t, simple bool) bool { + if simple { + if !yaml_emitter_write_indicator(emitter, []byte{':'}, false, false, false) { + return false + } + } else { + if !yaml_emitter_write_indent(emitter) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte{':'}, true, false, true) { + return false + } + } + emitter.states = append(emitter.states, yaml_EMIT_BLOCK_MAPPING_KEY_STATE) + return yaml_emitter_emit_node(emitter, event, false, false, true, false) +} + +// Expect a node. +func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t, + root bool, sequence bool, mapping bool, simple_key bool) bool { + + emitter.root_context = root + emitter.sequence_context = sequence + emitter.mapping_context = mapping + emitter.simple_key_context = simple_key + + switch event.typ { + case yaml_ALIAS_EVENT: + return yaml_emitter_emit_alias(emitter, event) + case yaml_SCALAR_EVENT: + return yaml_emitter_emit_scalar(emitter, event) + case yaml_SEQUENCE_START_EVENT: + return yaml_emitter_emit_sequence_start(emitter, event) + case yaml_MAPPING_START_EVENT: + return yaml_emitter_emit_mapping_start(emitter, event) + default: + return yaml_emitter_set_emitter_error(emitter, + "expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS") + } + return false +} + +// Expect ALIAS. +func yaml_emitter_emit_alias(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_process_anchor(emitter) { + return false + } + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true +} + +// Expect SCALAR. +func yaml_emitter_emit_scalar(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_select_scalar_style(emitter, event) { + return false + } + if !yaml_emitter_process_anchor(emitter) { + return false + } + if !yaml_emitter_process_tag(emitter) { + return false + } + if !yaml_emitter_increase_indent(emitter, true, false) { + return false + } + if !yaml_emitter_process_scalar(emitter) { + return false + } + emitter.indent = emitter.indents[len(emitter.indents)-1] + emitter.indents = emitter.indents[:len(emitter.indents)-1] + emitter.state = emitter.states[len(emitter.states)-1] + emitter.states = emitter.states[:len(emitter.states)-1] + return true +} + +// Expect SEQUENCE-START. +func yaml_emitter_emit_sequence_start(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_process_anchor(emitter) { + return false + } + if !yaml_emitter_process_tag(emitter) { + return false + } + if emitter.flow_level > 0 || emitter.canonical || event.sequence_style() == yaml_FLOW_SEQUENCE_STYLE || + yaml_emitter_check_empty_sequence(emitter) { + emitter.state = yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE + } else { + emitter.state = yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE + } + return true +} + +// Expect MAPPING-START. +func yaml_emitter_emit_mapping_start(emitter *yaml_emitter_t, event *yaml_event_t) bool { + if !yaml_emitter_process_anchor(emitter) { + return false + } + if !yaml_emitter_process_tag(emitter) { + return false + } + if emitter.flow_level > 0 || emitter.canonical || event.mapping_style() == yaml_FLOW_MAPPING_STYLE || + yaml_emitter_check_empty_mapping(emitter) { + emitter.state = yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE + } else { + emitter.state = yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE + } + return true +} + +// Check if the document content is an empty scalar. +func yaml_emitter_check_empty_document(emitter *yaml_emitter_t) bool { + return false // [Go] Huh? +} + +// Check if the next events represent an empty sequence. +func yaml_emitter_check_empty_sequence(emitter *yaml_emitter_t) bool { + if len(emitter.events)-emitter.events_head < 2 { + return false + } + return emitter.events[emitter.events_head].typ == yaml_SEQUENCE_START_EVENT && + emitter.events[emitter.events_head+1].typ == yaml_SEQUENCE_END_EVENT +} + +// Check if the next events represent an empty mapping. +func yaml_emitter_check_empty_mapping(emitter *yaml_emitter_t) bool { + if len(emitter.events)-emitter.events_head < 2 { + return false + } + return emitter.events[emitter.events_head].typ == yaml_MAPPING_START_EVENT && + emitter.events[emitter.events_head+1].typ == yaml_MAPPING_END_EVENT +} + +// Check if the next node can be expressed as a simple key. +func yaml_emitter_check_simple_key(emitter *yaml_emitter_t) bool { + length := 0 + switch emitter.events[emitter.events_head].typ { + case yaml_ALIAS_EVENT: + length += len(emitter.anchor_data.anchor) + case yaml_SCALAR_EVENT: + if emitter.scalar_data.multiline { + return false + } + length += len(emitter.anchor_data.anchor) + + len(emitter.tag_data.handle) + + len(emitter.tag_data.suffix) + + len(emitter.scalar_data.value) + case yaml_SEQUENCE_START_EVENT: + if !yaml_emitter_check_empty_sequence(emitter) { + return false + } + length += len(emitter.anchor_data.anchor) + + len(emitter.tag_data.handle) + + len(emitter.tag_data.suffix) + case yaml_MAPPING_START_EVENT: + if !yaml_emitter_check_empty_mapping(emitter) { + return false + } + length += len(emitter.anchor_data.anchor) + + len(emitter.tag_data.handle) + + len(emitter.tag_data.suffix) + default: + return false + } + return length <= 128 +} + +// Determine an acceptable scalar style. +func yaml_emitter_select_scalar_style(emitter *yaml_emitter_t, event *yaml_event_t) bool { + + no_tag := len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 + if no_tag && !event.implicit && !event.quoted_implicit { + return yaml_emitter_set_emitter_error(emitter, "neither tag nor implicit flags are specified") + } + + style := event.scalar_style() + if style == yaml_ANY_SCALAR_STYLE { + style = yaml_PLAIN_SCALAR_STYLE + } + if emitter.canonical { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + if emitter.simple_key_context && emitter.scalar_data.multiline { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + + if style == yaml_PLAIN_SCALAR_STYLE { + if emitter.flow_level > 0 && !emitter.scalar_data.flow_plain_allowed || + emitter.flow_level == 0 && !emitter.scalar_data.block_plain_allowed { + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + } + if len(emitter.scalar_data.value) == 0 && (emitter.flow_level > 0 || emitter.simple_key_context) { + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + } + if no_tag && !event.implicit { + style = yaml_SINGLE_QUOTED_SCALAR_STYLE + } + } + if style == yaml_SINGLE_QUOTED_SCALAR_STYLE { + if !emitter.scalar_data.single_quoted_allowed { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + } + if style == yaml_LITERAL_SCALAR_STYLE || style == yaml_FOLDED_SCALAR_STYLE { + if !emitter.scalar_data.block_allowed || emitter.flow_level > 0 || emitter.simple_key_context { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + } + + if no_tag && !event.quoted_implicit && style != yaml_PLAIN_SCALAR_STYLE { + emitter.tag_data.handle = []byte{'!'} + } + emitter.scalar_data.style = style + return true +} + +// Write an achor. +func yaml_emitter_process_anchor(emitter *yaml_emitter_t) bool { + if emitter.anchor_data.anchor == nil { + return true + } + c := []byte{'&'} + if emitter.anchor_data.alias { + c[0] = '*' + } + if !yaml_emitter_write_indicator(emitter, c, true, false, false) { + return false + } + return yaml_emitter_write_anchor(emitter, emitter.anchor_data.anchor) +} + +// Write a tag. +func yaml_emitter_process_tag(emitter *yaml_emitter_t) bool { + if len(emitter.tag_data.handle) == 0 && len(emitter.tag_data.suffix) == 0 { + return true + } + if len(emitter.tag_data.handle) > 0 { + if !yaml_emitter_write_tag_handle(emitter, emitter.tag_data.handle) { + return false + } + if len(emitter.tag_data.suffix) > 0 { + if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) { + return false + } + } + } else { + // [Go] Allocate these slices elsewhere. + if !yaml_emitter_write_indicator(emitter, []byte("!<"), true, false, false) { + return false + } + if !yaml_emitter_write_tag_content(emitter, emitter.tag_data.suffix, false) { + return false + } + if !yaml_emitter_write_indicator(emitter, []byte{'>'}, false, false, false) { + return false + } + } + return true +} + +// Write a scalar. +func yaml_emitter_process_scalar(emitter *yaml_emitter_t) bool { + switch emitter.scalar_data.style { + case yaml_PLAIN_SCALAR_STYLE: + return yaml_emitter_write_plain_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context) + + case yaml_SINGLE_QUOTED_SCALAR_STYLE: + return yaml_emitter_write_single_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context) + + case yaml_DOUBLE_QUOTED_SCALAR_STYLE: + return yaml_emitter_write_double_quoted_scalar(emitter, emitter.scalar_data.value, !emitter.simple_key_context) + + case yaml_LITERAL_SCALAR_STYLE: + return yaml_emitter_write_literal_scalar(emitter, emitter.scalar_data.value) + + case yaml_FOLDED_SCALAR_STYLE: + return yaml_emitter_write_folded_scalar(emitter, emitter.scalar_data.value) + } + panic("unknown scalar style") +} + +// Check if a %YAML directive is valid. +func yaml_emitter_analyze_version_directive(emitter *yaml_emitter_t, version_directive *yaml_version_directive_t) bool { + if version_directive.major != 1 || version_directive.minor != 1 { + return yaml_emitter_set_emitter_error(emitter, "incompatible %YAML directive") + } + return true +} + +// Check if a %TAG directive is valid. +func yaml_emitter_analyze_tag_directive(emitter *yaml_emitter_t, tag_directive *yaml_tag_directive_t) bool { + handle := tag_directive.handle + prefix := tag_directive.prefix + if len(handle) == 0 { + return yaml_emitter_set_emitter_error(emitter, "tag handle must not be empty") + } + if handle[0] != '!' { + return yaml_emitter_set_emitter_error(emitter, "tag handle must start with '!'") + } + if handle[len(handle)-1] != '!' { + return yaml_emitter_set_emitter_error(emitter, "tag handle must end with '!'") + } + for i := 1; i < len(handle)-1; i += width(handle[i]) { + if !is_alpha(handle, i) { + return yaml_emitter_set_emitter_error(emitter, "tag handle must contain alphanumerical characters only") + } + } + if len(prefix) == 0 { + return yaml_emitter_set_emitter_error(emitter, "tag prefix must not be empty") + } + return true +} + +// Check if an anchor is valid. +func yaml_emitter_analyze_anchor(emitter *yaml_emitter_t, anchor []byte, alias bool) bool { + if len(anchor) == 0 { + problem := "anchor value must not be empty" + if alias { + problem = "alias value must not be empty" + } + return yaml_emitter_set_emitter_error(emitter, problem) + } + for i := 0; i < len(anchor); i += width(anchor[i]) { + if !is_alpha(anchor, i) { + problem := "anchor value must contain alphanumerical characters only" + if alias { + problem = "alias value must contain alphanumerical characters only" + } + return yaml_emitter_set_emitter_error(emitter, problem) + } + } + emitter.anchor_data.anchor = anchor + emitter.anchor_data.alias = alias + return true +} + +// Check if a tag is valid. +func yaml_emitter_analyze_tag(emitter *yaml_emitter_t, tag []byte) bool { + if len(tag) == 0 { + return yaml_emitter_set_emitter_error(emitter, "tag value must not be empty") + } + for i := 0; i < len(emitter.tag_directives); i++ { + tag_directive := &emitter.tag_directives[i] + if bytes.HasPrefix(tag, tag_directive.prefix) { + emitter.tag_data.handle = tag_directive.handle + emitter.tag_data.suffix = tag[len(tag_directive.prefix):] + return true + } + } + emitter.tag_data.suffix = tag + return true +} + +// Check if a scalar is valid. +func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool { + var ( + block_indicators = false + flow_indicators = false + line_breaks = false + special_characters = false + + leading_space = false + leading_break = false + trailing_space = false + trailing_break = false + break_space = false + space_break = false + + preceeded_by_whitespace = false + followed_by_whitespace = false + previous_space = false + previous_break = false + ) + + emitter.scalar_data.value = value + + if len(value) == 0 { + emitter.scalar_data.multiline = false + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = true + emitter.scalar_data.single_quoted_allowed = true + emitter.scalar_data.block_allowed = false + return true + } + + if len(value) >= 3 && ((value[0] == '-' && value[1] == '-' && value[2] == '-') || (value[0] == '.' && value[1] == '.' && value[2] == '.')) { + block_indicators = true + flow_indicators = true + } + + preceeded_by_whitespace = true + for i, w := 0, 0; i < len(value); i += w { + w = width(value[i]) + followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w) + + if i == 0 { + switch value[i] { + case '#', ',', '[', ']', '{', '}', '&', '*', '!', '|', '>', '\'', '"', '%', '@', '`': + flow_indicators = true + block_indicators = true + case '?', ':': + flow_indicators = true + if followed_by_whitespace { + block_indicators = true + } + case '-': + if followed_by_whitespace { + flow_indicators = true + block_indicators = true + } + } + } else { + switch value[i] { + case ',', '?', '[', ']', '{', '}': + flow_indicators = true + case ':': + flow_indicators = true + if followed_by_whitespace { + block_indicators = true + } + case '#': + if preceeded_by_whitespace { + flow_indicators = true + block_indicators = true + } + } + } + + if !is_printable(value, i) || !is_ascii(value, i) && !emitter.unicode { + special_characters = true + } + if is_space(value, i) { + if i == 0 { + leading_space = true + } + if i+width(value[i]) == len(value) { + trailing_space = true + } + if previous_break { + break_space = true + } + previous_space = true + previous_break = false + } else if is_break(value, i) { + line_breaks = true + if i == 0 { + leading_break = true + } + if i+width(value[i]) == len(value) { + trailing_break = true + } + if previous_space { + space_break = true + } + previous_space = false + previous_break = true + } else { + previous_space = false + previous_break = false + } + + // [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition. + preceeded_by_whitespace = is_blankz(value, i) + } + + emitter.scalar_data.multiline = line_breaks + emitter.scalar_data.flow_plain_allowed = true + emitter.scalar_data.block_plain_allowed = true + emitter.scalar_data.single_quoted_allowed = true + emitter.scalar_data.block_allowed = true + + if leading_space || leading_break || trailing_space || trailing_break { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + } + if trailing_space { + emitter.scalar_data.block_allowed = false + } + if break_space { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + emitter.scalar_data.single_quoted_allowed = false + } + if space_break || special_characters { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + emitter.scalar_data.single_quoted_allowed = false + emitter.scalar_data.block_allowed = false + } + if line_breaks { + emitter.scalar_data.flow_plain_allowed = false + emitter.scalar_data.block_plain_allowed = false + } + if flow_indicators { + emitter.scalar_data.flow_plain_allowed = false + } + if block_indicators { + emitter.scalar_data.block_plain_allowed = false + } + return true +} + +// Check if the event data is valid. +func yaml_emitter_analyze_event(emitter *yaml_emitter_t, event *yaml_event_t) bool { + + emitter.anchor_data.anchor = nil + emitter.tag_data.handle = nil + emitter.tag_data.suffix = nil + emitter.scalar_data.value = nil + + switch event.typ { + case yaml_ALIAS_EVENT: + if !yaml_emitter_analyze_anchor(emitter, event.anchor, true) { + return false + } + + case yaml_SCALAR_EVENT: + if len(event.anchor) > 0 { + if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) { + return false + } + } + if len(event.tag) > 0 && (emitter.canonical || (!event.implicit && !event.quoted_implicit)) { + if !yaml_emitter_analyze_tag(emitter, event.tag) { + return false + } + } + if !yaml_emitter_analyze_scalar(emitter, event.value) { + return false + } + + case yaml_SEQUENCE_START_EVENT: + if len(event.anchor) > 0 { + if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) { + return false + } + } + if len(event.tag) > 0 && (emitter.canonical || !event.implicit) { + if !yaml_emitter_analyze_tag(emitter, event.tag) { + return false + } + } + + case yaml_MAPPING_START_EVENT: + if len(event.anchor) > 0 { + if !yaml_emitter_analyze_anchor(emitter, event.anchor, false) { + return false + } + } + if len(event.tag) > 0 && (emitter.canonical || !event.implicit) { + if !yaml_emitter_analyze_tag(emitter, event.tag) { + return false + } + } + } + return true +} + +// Write the BOM character. +func yaml_emitter_write_bom(emitter *yaml_emitter_t) bool { + if !flush(emitter) { + return false + } + pos := emitter.buffer_pos + emitter.buffer[pos+0] = '\xEF' + emitter.buffer[pos+1] = '\xBB' + emitter.buffer[pos+2] = '\xBF' + emitter.buffer_pos += 3 + return true +} + +func yaml_emitter_write_indent(emitter *yaml_emitter_t) bool { + indent := emitter.indent + if indent < 0 { + indent = 0 + } + if !emitter.indention || emitter.column > indent || (emitter.column == indent && !emitter.whitespace) { + if !put_break(emitter) { + return false + } + } + for emitter.column < indent { + if !put(emitter, ' ') { + return false + } + } + emitter.whitespace = true + emitter.indention = true + return true +} + +func yaml_emitter_write_indicator(emitter *yaml_emitter_t, indicator []byte, need_whitespace, is_whitespace, is_indention bool) bool { + if need_whitespace && !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + if !write_all(emitter, indicator) { + return false + } + emitter.whitespace = is_whitespace + emitter.indention = (emitter.indention && is_indention) + emitter.open_ended = false + return true +} + +func yaml_emitter_write_anchor(emitter *yaml_emitter_t, value []byte) bool { + if !write_all(emitter, value) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_tag_handle(emitter *yaml_emitter_t, value []byte) bool { + if !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + if !write_all(emitter, value) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_tag_content(emitter *yaml_emitter_t, value []byte, need_whitespace bool) bool { + if need_whitespace && !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + for i := 0; i < len(value); { + var must_write bool + switch value[i] { + case ';', '/', '?', ':', '@', '&', '=', '+', '$', ',', '_', '.', '~', '*', '\'', '(', ')', '[', ']': + must_write = true + default: + must_write = is_alpha(value, i) + } + if must_write { + if !write(emitter, value, &i) { + return false + } + } else { + w := width(value[i]) + for k := 0; k < w; k++ { + octet := value[i] + i++ + if !put(emitter, '%') { + return false + } + + c := octet >> 4 + if c < 10 { + c += '0' + } else { + c += 'A' - 10 + } + if !put(emitter, c) { + return false + } + + c = octet & 0x0f + if c < 10 { + c += '0' + } else { + c += 'A' - 10 + } + if !put(emitter, c) { + return false + } + } + } + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_plain_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool { + if !emitter.whitespace { + if !put(emitter, ' ') { + return false + } + } + + spaces := false + breaks := false + for i := 0; i < len(value); { + if is_space(value, i) { + if allow_breaks && !spaces && emitter.column > emitter.best_width && !is_space(value, i+1) { + if !yaml_emitter_write_indent(emitter) { + return false + } + i += width(value[i]) + } else { + if !write(emitter, value, &i) { + return false + } + } + spaces = true + } else if is_break(value, i) { + if !breaks && value[i] == '\n' { + if !put_break(emitter) { + return false + } + } + if !write_break(emitter, value, &i) { + return false + } + emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !write(emitter, value, &i) { + return false + } + emitter.indention = false + spaces = false + breaks = false + } + } + + emitter.whitespace = false + emitter.indention = false + if emitter.root_context { + emitter.open_ended = true + } + + return true +} + +func yaml_emitter_write_single_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool { + + if !yaml_emitter_write_indicator(emitter, []byte{'\''}, true, false, false) { + return false + } + + spaces := false + breaks := false + for i := 0; i < len(value); { + if is_space(value, i) { + if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 && !is_space(value, i+1) { + if !yaml_emitter_write_indent(emitter) { + return false + } + i += width(value[i]) + } else { + if !write(emitter, value, &i) { + return false + } + } + spaces = true + } else if is_break(value, i) { + if !breaks && value[i] == '\n' { + if !put_break(emitter) { + return false + } + } + if !write_break(emitter, value, &i) { + return false + } + emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if value[i] == '\'' { + if !put(emitter, '\'') { + return false + } + } + if !write(emitter, value, &i) { + return false + } + emitter.indention = false + spaces = false + breaks = false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{'\''}, false, false, false) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_double_quoted_scalar(emitter *yaml_emitter_t, value []byte, allow_breaks bool) bool { + spaces := false + if !yaml_emitter_write_indicator(emitter, []byte{'"'}, true, false, false) { + return false + } + + for i := 0; i < len(value); { + if !is_printable(value, i) || (!emitter.unicode && !is_ascii(value, i)) || + is_bom(value, i) || is_break(value, i) || + value[i] == '"' || value[i] == '\\' { + + octet := value[i] + + var w int + var v rune + switch { + case octet&0x80 == 0x00: + w, v = 1, rune(octet&0x7F) + case octet&0xE0 == 0xC0: + w, v = 2, rune(octet&0x1F) + case octet&0xF0 == 0xE0: + w, v = 3, rune(octet&0x0F) + case octet&0xF8 == 0xF0: + w, v = 4, rune(octet&0x07) + } + for k := 1; k < w; k++ { + octet = value[i+k] + v = (v << 6) + (rune(octet) & 0x3F) + } + i += w + + if !put(emitter, '\\') { + return false + } + + var ok bool + switch v { + case 0x00: + ok = put(emitter, '0') + case 0x07: + ok = put(emitter, 'a') + case 0x08: + ok = put(emitter, 'b') + case 0x09: + ok = put(emitter, 't') + case 0x0A: + ok = put(emitter, 'n') + case 0x0b: + ok = put(emitter, 'v') + case 0x0c: + ok = put(emitter, 'f') + case 0x0d: + ok = put(emitter, 'r') + case 0x1b: + ok = put(emitter, 'e') + case 0x22: + ok = put(emitter, '"') + case 0x5c: + ok = put(emitter, '\\') + case 0x85: + ok = put(emitter, 'N') + case 0xA0: + ok = put(emitter, '_') + case 0x2028: + ok = put(emitter, 'L') + case 0x2029: + ok = put(emitter, 'P') + default: + if v <= 0xFF { + ok = put(emitter, 'x') + w = 2 + } else if v <= 0xFFFF { + ok = put(emitter, 'u') + w = 4 + } else { + ok = put(emitter, 'U') + w = 8 + } + for k := (w - 1) * 4; ok && k >= 0; k -= 4 { + digit := byte((v >> uint(k)) & 0x0F) + if digit < 10 { + ok = put(emitter, digit+'0') + } else { + ok = put(emitter, digit+'A'-10) + } + } + } + if !ok { + return false + } + spaces = false + } else if is_space(value, i) { + if allow_breaks && !spaces && emitter.column > emitter.best_width && i > 0 && i < len(value)-1 { + if !yaml_emitter_write_indent(emitter) { + return false + } + if is_space(value, i+1) { + if !put(emitter, '\\') { + return false + } + } + i += width(value[i]) + } else if !write(emitter, value, &i) { + return false + } + spaces = true + } else { + if !write(emitter, value, &i) { + return false + } + spaces = false + } + } + if !yaml_emitter_write_indicator(emitter, []byte{'"'}, false, false, false) { + return false + } + emitter.whitespace = false + emitter.indention = false + return true +} + +func yaml_emitter_write_block_scalar_hints(emitter *yaml_emitter_t, value []byte) bool { + if is_space(value, 0) || is_break(value, 0) { + indent_hint := []byte{'0' + byte(emitter.best_indent)} + if !yaml_emitter_write_indicator(emitter, indent_hint, false, false, false) { + return false + } + } + + emitter.open_ended = false + + var chomp_hint [1]byte + if len(value) == 0 { + chomp_hint[0] = '-' + } else { + i := len(value) - 1 + for value[i]&0xC0 == 0x80 { + i-- + } + if !is_break(value, i) { + chomp_hint[0] = '-' + } else if i == 0 { + chomp_hint[0] = '+' + emitter.open_ended = true + } else { + i-- + for value[i]&0xC0 == 0x80 { + i-- + } + if is_break(value, i) { + chomp_hint[0] = '+' + emitter.open_ended = true + } + } + } + if chomp_hint[0] != 0 { + if !yaml_emitter_write_indicator(emitter, chomp_hint[:], false, false, false) { + return false + } + } + return true +} + +func yaml_emitter_write_literal_scalar(emitter *yaml_emitter_t, value []byte) bool { + if !yaml_emitter_write_indicator(emitter, []byte{'|'}, true, false, false) { + return false + } + if !yaml_emitter_write_block_scalar_hints(emitter, value) { + return false + } + if !put_break(emitter) { + return false + } + emitter.indention = true + emitter.whitespace = true + breaks := true + for i := 0; i < len(value); { + if is_break(value, i) { + if !write_break(emitter, value, &i) { + return false + } + emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + } + if !write(emitter, value, &i) { + return false + } + emitter.indention = false + breaks = false + } + } + + return true +} + +func yaml_emitter_write_folded_scalar(emitter *yaml_emitter_t, value []byte) bool { + if !yaml_emitter_write_indicator(emitter, []byte{'>'}, true, false, false) { + return false + } + if !yaml_emitter_write_block_scalar_hints(emitter, value) { + return false + } + + if !put_break(emitter) { + return false + } + emitter.indention = true + emitter.whitespace = true + + breaks := true + leading_spaces := true + for i := 0; i < len(value); { + if is_break(value, i) { + if !breaks && !leading_spaces && value[i] == '\n' { + k := 0 + for is_break(value, k) { + k += width(value[k]) + } + if !is_blankz(value, k) { + if !put_break(emitter) { + return false + } + } + } + if !write_break(emitter, value, &i) { + return false + } + emitter.indention = true + breaks = true + } else { + if breaks { + if !yaml_emitter_write_indent(emitter) { + return false + } + leading_spaces = is_blank(value, i) + } + if !breaks && is_space(value, i) && !is_space(value, i+1) && emitter.column > emitter.best_width { + if !yaml_emitter_write_indent(emitter) { + return false + } + i += width(value[i]) + } else { + if !write(emitter, value, &i) { + return false + } + } + emitter.indention = false + breaks = false + } + } + return true +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/encode.go b/components/engine/vendor/gopkg.in/yaml.v2/encode.go new file mode 100644 index 0000000000..84f8499551 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/encode.go @@ -0,0 +1,306 @@ +package yaml + +import ( + "encoding" + "fmt" + "reflect" + "regexp" + "sort" + "strconv" + "strings" + "time" +) + +type encoder struct { + emitter yaml_emitter_t + event yaml_event_t + out []byte + flow bool +} + +func newEncoder() (e *encoder) { + e = &encoder{} + e.must(yaml_emitter_initialize(&e.emitter)) + yaml_emitter_set_output_string(&e.emitter, &e.out) + yaml_emitter_set_unicode(&e.emitter, true) + e.must(yaml_stream_start_event_initialize(&e.event, yaml_UTF8_ENCODING)) + e.emit() + e.must(yaml_document_start_event_initialize(&e.event, nil, nil, true)) + e.emit() + return e +} + +func (e *encoder) finish() { + e.must(yaml_document_end_event_initialize(&e.event, true)) + e.emit() + e.emitter.open_ended = false + e.must(yaml_stream_end_event_initialize(&e.event)) + e.emit() +} + +func (e *encoder) destroy() { + yaml_emitter_delete(&e.emitter) +} + +func (e *encoder) emit() { + // This will internally delete the e.event value. + if !yaml_emitter_emit(&e.emitter, &e.event) && e.event.typ != yaml_DOCUMENT_END_EVENT && e.event.typ != yaml_STREAM_END_EVENT { + e.must(false) + } +} + +func (e *encoder) must(ok bool) { + if !ok { + msg := e.emitter.problem + if msg == "" { + msg = "unknown problem generating YAML content" + } + failf("%s", msg) + } +} + +func (e *encoder) marshal(tag string, in reflect.Value) { + if !in.IsValid() { + e.nilv() + return + } + iface := in.Interface() + if m, ok := iface.(Marshaler); ok { + v, err := m.MarshalYAML() + if err != nil { + fail(err) + } + if v == nil { + e.nilv() + return + } + in = reflect.ValueOf(v) + } else if m, ok := iface.(encoding.TextMarshaler); ok { + text, err := m.MarshalText() + if err != nil { + fail(err) + } + in = reflect.ValueOf(string(text)) + } + switch in.Kind() { + case reflect.Interface: + if in.IsNil() { + e.nilv() + } else { + e.marshal(tag, in.Elem()) + } + case reflect.Map: + e.mapv(tag, in) + case reflect.Ptr: + if in.IsNil() { + e.nilv() + } else { + e.marshal(tag, in.Elem()) + } + case reflect.Struct: + e.structv(tag, in) + case reflect.Slice: + if in.Type().Elem() == mapItemType { + e.itemsv(tag, in) + } else { + e.slicev(tag, in) + } + case reflect.String: + e.stringv(tag, in) + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + if in.Type() == durationType { + e.stringv(tag, reflect.ValueOf(iface.(time.Duration).String())) + } else { + e.intv(tag, in) + } + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + e.uintv(tag, in) + case reflect.Float32, reflect.Float64: + e.floatv(tag, in) + case reflect.Bool: + e.boolv(tag, in) + default: + panic("cannot marshal type: " + in.Type().String()) + } +} + +func (e *encoder) mapv(tag string, in reflect.Value) { + e.mappingv(tag, func() { + keys := keyList(in.MapKeys()) + sort.Sort(keys) + for _, k := range keys { + e.marshal("", k) + e.marshal("", in.MapIndex(k)) + } + }) +} + +func (e *encoder) itemsv(tag string, in reflect.Value) { + e.mappingv(tag, func() { + slice := in.Convert(reflect.TypeOf([]MapItem{})).Interface().([]MapItem) + for _, item := range slice { + e.marshal("", reflect.ValueOf(item.Key)) + e.marshal("", reflect.ValueOf(item.Value)) + } + }) +} + +func (e *encoder) structv(tag string, in reflect.Value) { + sinfo, err := getStructInfo(in.Type()) + if err != nil { + panic(err) + } + e.mappingv(tag, func() { + for _, info := range sinfo.FieldsList { + var value reflect.Value + if info.Inline == nil { + value = in.Field(info.Num) + } else { + value = in.FieldByIndex(info.Inline) + } + if info.OmitEmpty && isZero(value) { + continue + } + e.marshal("", reflect.ValueOf(info.Key)) + e.flow = info.Flow + e.marshal("", value) + } + if sinfo.InlineMap >= 0 { + m := in.Field(sinfo.InlineMap) + if m.Len() > 0 { + e.flow = false + keys := keyList(m.MapKeys()) + sort.Sort(keys) + for _, k := range keys { + if _, found := sinfo.FieldsMap[k.String()]; found { + panic(fmt.Sprintf("Can't have key %q in inlined map; conflicts with struct field", k.String())) + } + e.marshal("", k) + e.flow = false + e.marshal("", m.MapIndex(k)) + } + } + } + }) +} + +func (e *encoder) mappingv(tag string, f func()) { + implicit := tag == "" + style := yaml_BLOCK_MAPPING_STYLE + if e.flow { + e.flow = false + style = yaml_FLOW_MAPPING_STYLE + } + e.must(yaml_mapping_start_event_initialize(&e.event, nil, []byte(tag), implicit, style)) + e.emit() + f() + e.must(yaml_mapping_end_event_initialize(&e.event)) + e.emit() +} + +func (e *encoder) slicev(tag string, in reflect.Value) { + implicit := tag == "" + style := yaml_BLOCK_SEQUENCE_STYLE + if e.flow { + e.flow = false + style = yaml_FLOW_SEQUENCE_STYLE + } + e.must(yaml_sequence_start_event_initialize(&e.event, nil, []byte(tag), implicit, style)) + e.emit() + n := in.Len() + for i := 0; i < n; i++ { + e.marshal("", in.Index(i)) + } + e.must(yaml_sequence_end_event_initialize(&e.event)) + e.emit() +} + +// isBase60 returns whether s is in base 60 notation as defined in YAML 1.1. +// +// The base 60 float notation in YAML 1.1 is a terrible idea and is unsupported +// in YAML 1.2 and by this package, but these should be marshalled quoted for +// the time being for compatibility with other parsers. +func isBase60Float(s string) (result bool) { + // Fast path. + if s == "" { + return false + } + c := s[0] + if !(c == '+' || c == '-' || c >= '0' && c <= '9') || strings.IndexByte(s, ':') < 0 { + return false + } + // Do the full match. + return base60float.MatchString(s) +} + +// From http://yaml.org/type/float.html, except the regular expression there +// is bogus. In practice parsers do not enforce the "\.[0-9_]*" suffix. +var base60float = regexp.MustCompile(`^[-+]?[0-9][0-9_]*(?::[0-5]?[0-9])+(?:\.[0-9_]*)?$`) + +func (e *encoder) stringv(tag string, in reflect.Value) { + var style yaml_scalar_style_t + s := in.String() + rtag, rs := resolve("", s) + if rtag == yaml_BINARY_TAG { + if tag == "" || tag == yaml_STR_TAG { + tag = rtag + s = rs.(string) + } else if tag == yaml_BINARY_TAG { + failf("explicitly tagged !!binary data must be base64-encoded") + } else { + failf("cannot marshal invalid UTF-8 data as %s", shortTag(tag)) + } + } + if tag == "" && (rtag != yaml_STR_TAG || isBase60Float(s)) { + style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } else if strings.Contains(s, "\n") { + style = yaml_LITERAL_SCALAR_STYLE + } else { + style = yaml_PLAIN_SCALAR_STYLE + } + e.emitScalar(s, "", tag, style) +} + +func (e *encoder) boolv(tag string, in reflect.Value) { + var s string + if in.Bool() { + s = "true" + } else { + s = "false" + } + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE) +} + +func (e *encoder) intv(tag string, in reflect.Value) { + s := strconv.FormatInt(in.Int(), 10) + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE) +} + +func (e *encoder) uintv(tag string, in reflect.Value) { + s := strconv.FormatUint(in.Uint(), 10) + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE) +} + +func (e *encoder) floatv(tag string, in reflect.Value) { + // FIXME: Handle 64 bits here. + s := strconv.FormatFloat(float64(in.Float()), 'g', -1, 32) + switch s { + case "+Inf": + s = ".inf" + case "-Inf": + s = "-.inf" + case "NaN": + s = ".nan" + } + e.emitScalar(s, "", tag, yaml_PLAIN_SCALAR_STYLE) +} + +func (e *encoder) nilv() { + e.emitScalar("null", "", "", yaml_PLAIN_SCALAR_STYLE) +} + +func (e *encoder) emitScalar(value, anchor, tag string, style yaml_scalar_style_t) { + implicit := tag == "" + e.must(yaml_scalar_event_initialize(&e.event, []byte(anchor), []byte(tag), []byte(value), implicit, implicit, style)) + e.emit() +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/parserc.go b/components/engine/vendor/gopkg.in/yaml.v2/parserc.go new file mode 100644 index 0000000000..0a7037ad1b --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/parserc.go @@ -0,0 +1,1096 @@ +package yaml + +import ( + "bytes" +) + +// The parser implements the following grammar: +// +// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END +// implicit_document ::= block_node DOCUMENT-END* +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// block_node_or_indentless_sequence ::= +// ALIAS +// | properties (block_content | indentless_block_sequence)? +// | block_content +// | indentless_block_sequence +// block_node ::= ALIAS +// | properties block_content? +// | block_content +// flow_node ::= ALIAS +// | properties flow_content? +// | flow_content +// properties ::= TAG ANCHOR? | ANCHOR TAG? +// block_content ::= block_collection | flow_collection | SCALAR +// flow_content ::= flow_collection | SCALAR +// block_collection ::= block_sequence | block_mapping +// flow_collection ::= flow_sequence | flow_mapping +// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END +// indentless_sequence ::= (BLOCK-ENTRY block_node?)+ +// block_mapping ::= BLOCK-MAPPING_START +// ((KEY block_node_or_indentless_sequence?)? +// (VALUE block_node_or_indentless_sequence?)?)* +// BLOCK-END +// flow_sequence ::= FLOW-SEQUENCE-START +// (flow_sequence_entry FLOW-ENTRY)* +// flow_sequence_entry? +// FLOW-SEQUENCE-END +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// flow_mapping ::= FLOW-MAPPING-START +// (flow_mapping_entry FLOW-ENTRY)* +// flow_mapping_entry? +// FLOW-MAPPING-END +// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? + +// Peek the next token in the token queue. +func peek_token(parser *yaml_parser_t) *yaml_token_t { + if parser.token_available || yaml_parser_fetch_more_tokens(parser) { + return &parser.tokens[parser.tokens_head] + } + return nil +} + +// Remove the next token from the queue (must be called after peek_token). +func skip_token(parser *yaml_parser_t) { + parser.token_available = false + parser.tokens_parsed++ + parser.stream_end_produced = parser.tokens[parser.tokens_head].typ == yaml_STREAM_END_TOKEN + parser.tokens_head++ +} + +// Get the next event. +func yaml_parser_parse(parser *yaml_parser_t, event *yaml_event_t) bool { + // Erase the event object. + *event = yaml_event_t{} + + // No events after the end of the stream or error. + if parser.stream_end_produced || parser.error != yaml_NO_ERROR || parser.state == yaml_PARSE_END_STATE { + return true + } + + // Generate the next event. + return yaml_parser_state_machine(parser, event) +} + +// Set parser error. +func yaml_parser_set_parser_error(parser *yaml_parser_t, problem string, problem_mark yaml_mark_t) bool { + parser.error = yaml_PARSER_ERROR + parser.problem = problem + parser.problem_mark = problem_mark + return false +} + +func yaml_parser_set_parser_error_context(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string, problem_mark yaml_mark_t) bool { + parser.error = yaml_PARSER_ERROR + parser.context = context + parser.context_mark = context_mark + parser.problem = problem + parser.problem_mark = problem_mark + return false +} + +// State dispatcher. +func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool { + //trace("yaml_parser_state_machine", "state:", parser.state.String()) + + switch parser.state { + case yaml_PARSE_STREAM_START_STATE: + return yaml_parser_parse_stream_start(parser, event) + + case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE: + return yaml_parser_parse_document_start(parser, event, true) + + case yaml_PARSE_DOCUMENT_START_STATE: + return yaml_parser_parse_document_start(parser, event, false) + + case yaml_PARSE_DOCUMENT_CONTENT_STATE: + return yaml_parser_parse_document_content(parser, event) + + case yaml_PARSE_DOCUMENT_END_STATE: + return yaml_parser_parse_document_end(parser, event) + + case yaml_PARSE_BLOCK_NODE_STATE: + return yaml_parser_parse_node(parser, event, true, false) + + case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: + return yaml_parser_parse_node(parser, event, true, true) + + case yaml_PARSE_FLOW_NODE_STATE: + return yaml_parser_parse_node(parser, event, false, false) + + case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: + return yaml_parser_parse_block_sequence_entry(parser, event, true) + + case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: + return yaml_parser_parse_block_sequence_entry(parser, event, false) + + case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: + return yaml_parser_parse_indentless_sequence_entry(parser, event) + + case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: + return yaml_parser_parse_block_mapping_key(parser, event, true) + + case yaml_PARSE_BLOCK_MAPPING_KEY_STATE: + return yaml_parser_parse_block_mapping_key(parser, event, false) + + case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE: + return yaml_parser_parse_block_mapping_value(parser, event) + + case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: + return yaml_parser_parse_flow_sequence_entry(parser, event, true) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE: + return yaml_parser_parse_flow_sequence_entry(parser, event, false) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: + return yaml_parser_parse_flow_sequence_entry_mapping_key(parser, event) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: + return yaml_parser_parse_flow_sequence_entry_mapping_value(parser, event) + + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: + return yaml_parser_parse_flow_sequence_entry_mapping_end(parser, event) + + case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: + return yaml_parser_parse_flow_mapping_key(parser, event, true) + + case yaml_PARSE_FLOW_MAPPING_KEY_STATE: + return yaml_parser_parse_flow_mapping_key(parser, event, false) + + case yaml_PARSE_FLOW_MAPPING_VALUE_STATE: + return yaml_parser_parse_flow_mapping_value(parser, event, false) + + case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: + return yaml_parser_parse_flow_mapping_value(parser, event, true) + + default: + panic("invalid parser state") + } + return false +} + +// Parse the production: +// stream ::= STREAM-START implicit_document? explicit_document* STREAM-END +// ************ +func yaml_parser_parse_stream_start(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_STREAM_START_TOKEN { + return yaml_parser_set_parser_error(parser, "did not find expected ", token.start_mark) + } + parser.state = yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE + *event = yaml_event_t{ + typ: yaml_STREAM_START_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + encoding: token.encoding, + } + skip_token(parser) + return true +} + +// Parse the productions: +// implicit_document ::= block_node DOCUMENT-END* +// * +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// ************************* +func yaml_parser_parse_document_start(parser *yaml_parser_t, event *yaml_event_t, implicit bool) bool { + + token := peek_token(parser) + if token == nil { + return false + } + + // Parse extra document end indicators. + if !implicit { + for token.typ == yaml_DOCUMENT_END_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + } + + if implicit && token.typ != yaml_VERSION_DIRECTIVE_TOKEN && + token.typ != yaml_TAG_DIRECTIVE_TOKEN && + token.typ != yaml_DOCUMENT_START_TOKEN && + token.typ != yaml_STREAM_END_TOKEN { + // Parse an implicit document. + if !yaml_parser_process_directives(parser, nil, nil) { + return false + } + parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE) + parser.state = yaml_PARSE_BLOCK_NODE_STATE + + *event = yaml_event_t{ + typ: yaml_DOCUMENT_START_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + + } else if token.typ != yaml_STREAM_END_TOKEN { + // Parse an explicit document. + var version_directive *yaml_version_directive_t + var tag_directives []yaml_tag_directive_t + start_mark := token.start_mark + if !yaml_parser_process_directives(parser, &version_directive, &tag_directives) { + return false + } + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_DOCUMENT_START_TOKEN { + yaml_parser_set_parser_error(parser, + "did not find expected ", token.start_mark) + return false + } + parser.states = append(parser.states, yaml_PARSE_DOCUMENT_END_STATE) + parser.state = yaml_PARSE_DOCUMENT_CONTENT_STATE + end_mark := token.end_mark + + *event = yaml_event_t{ + typ: yaml_DOCUMENT_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + version_directive: version_directive, + tag_directives: tag_directives, + implicit: false, + } + skip_token(parser) + + } else { + // Parse the stream end. + parser.state = yaml_PARSE_END_STATE + *event = yaml_event_t{ + typ: yaml_STREAM_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + skip_token(parser) + } + + return true +} + +// Parse the productions: +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// *********** +// +func yaml_parser_parse_document_content(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_VERSION_DIRECTIVE_TOKEN || + token.typ == yaml_TAG_DIRECTIVE_TOKEN || + token.typ == yaml_DOCUMENT_START_TOKEN || + token.typ == yaml_DOCUMENT_END_TOKEN || + token.typ == yaml_STREAM_END_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + return yaml_parser_process_empty_scalar(parser, event, + token.start_mark) + } + return yaml_parser_parse_node(parser, event, true, false) +} + +// Parse the productions: +// implicit_document ::= block_node DOCUMENT-END* +// ************* +// explicit_document ::= DIRECTIVE* DOCUMENT-START block_node? DOCUMENT-END* +// +func yaml_parser_parse_document_end(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + + start_mark := token.start_mark + end_mark := token.start_mark + + implicit := true + if token.typ == yaml_DOCUMENT_END_TOKEN { + end_mark = token.end_mark + skip_token(parser) + implicit = false + } + + parser.tag_directives = parser.tag_directives[:0] + + parser.state = yaml_PARSE_DOCUMENT_START_STATE + *event = yaml_event_t{ + typ: yaml_DOCUMENT_END_EVENT, + start_mark: start_mark, + end_mark: end_mark, + implicit: implicit, + } + return true +} + +// Parse the productions: +// block_node_or_indentless_sequence ::= +// ALIAS +// ***** +// | properties (block_content | indentless_block_sequence)? +// ********** * +// | block_content | indentless_block_sequence +// * +// block_node ::= ALIAS +// ***** +// | properties block_content? +// ********** * +// | block_content +// * +// flow_node ::= ALIAS +// ***** +// | properties flow_content? +// ********** * +// | flow_content +// * +// properties ::= TAG ANCHOR? | ANCHOR TAG? +// ************************* +// block_content ::= block_collection | flow_collection | SCALAR +// ****** +// flow_content ::= flow_collection | SCALAR +// ****** +func yaml_parser_parse_node(parser *yaml_parser_t, event *yaml_event_t, block, indentless_sequence bool) bool { + //defer trace("yaml_parser_parse_node", "block:", block, "indentless_sequence:", indentless_sequence)() + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_ALIAS_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + *event = yaml_event_t{ + typ: yaml_ALIAS_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + anchor: token.value, + } + skip_token(parser) + return true + } + + start_mark := token.start_mark + end_mark := token.start_mark + + var tag_token bool + var tag_handle, tag_suffix, anchor []byte + var tag_mark yaml_mark_t + if token.typ == yaml_ANCHOR_TOKEN { + anchor = token.value + start_mark = token.start_mark + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_TAG_TOKEN { + tag_token = true + tag_handle = token.value + tag_suffix = token.suffix + tag_mark = token.start_mark + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + } else if token.typ == yaml_TAG_TOKEN { + tag_token = true + tag_handle = token.value + tag_suffix = token.suffix + start_mark = token.start_mark + tag_mark = token.start_mark + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_ANCHOR_TOKEN { + anchor = token.value + end_mark = token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + } + + var tag []byte + if tag_token { + if len(tag_handle) == 0 { + tag = tag_suffix + tag_suffix = nil + } else { + for i := range parser.tag_directives { + if bytes.Equal(parser.tag_directives[i].handle, tag_handle) { + tag = append([]byte(nil), parser.tag_directives[i].prefix...) + tag = append(tag, tag_suffix...) + break + } + } + if len(tag) == 0 { + yaml_parser_set_parser_error_context(parser, + "while parsing a node", start_mark, + "found undefined tag handle", tag_mark) + return false + } + } + } + + implicit := len(tag) == 0 + if indentless_sequence && token.typ == yaml_BLOCK_ENTRY_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE), + } + return true + } + if token.typ == yaml_SCALAR_TOKEN { + var plain_implicit, quoted_implicit bool + end_mark = token.end_mark + if (len(tag) == 0 && token.style == yaml_PLAIN_SCALAR_STYLE) || (len(tag) == 1 && tag[0] == '!') { + plain_implicit = true + } else if len(tag) == 0 { + quoted_implicit = true + } + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + value: token.value, + implicit: plain_implicit, + quoted_implicit: quoted_implicit, + style: yaml_style_t(token.style), + } + skip_token(parser) + return true + } + if token.typ == yaml_FLOW_SEQUENCE_START_TOKEN { + // [Go] Some of the events below can be merged as they differ only on style. + end_mark = token.end_mark + parser.state = yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_FLOW_SEQUENCE_STYLE), + } + return true + } + if token.typ == yaml_FLOW_MAPPING_START_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_FLOW_MAPPING_STYLE), + } + return true + } + if block && token.typ == yaml_BLOCK_SEQUENCE_START_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_SEQUENCE_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_BLOCK_SEQUENCE_STYLE), + } + return true + } + if block && token.typ == yaml_BLOCK_MAPPING_START_TOKEN { + end_mark = token.end_mark + parser.state = yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + style: yaml_style_t(yaml_BLOCK_MAPPING_STYLE), + } + return true + } + if len(anchor) > 0 || len(tag) > 0 { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + start_mark: start_mark, + end_mark: end_mark, + anchor: anchor, + tag: tag, + implicit: implicit, + quoted_implicit: false, + style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE), + } + return true + } + + context := "while parsing a flow node" + if block { + context = "while parsing a block node" + } + yaml_parser_set_parser_error_context(parser, context, start_mark, + "did not find expected node content", token.start_mark) + return false +} + +// Parse the productions: +// block_sequence ::= BLOCK-SEQUENCE-START (BLOCK-ENTRY block_node?)* BLOCK-END +// ******************** *********** * ********* +// +func yaml_parser_parse_block_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_BLOCK_ENTRY_TOKEN { + mark := token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_BLOCK_ENTRY_TOKEN && token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE) + return yaml_parser_parse_node(parser, event, true, false) + } else { + parser.state = yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + } + if token.typ == yaml_BLOCK_END_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + + skip_token(parser) + return true + } + + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a block collection", context_mark, + "did not find expected '-' indicator", token.start_mark) +} + +// Parse the productions: +// indentless_sequence ::= (BLOCK-ENTRY block_node?)+ +// *********** * +func yaml_parser_parse_indentless_sequence_entry(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_BLOCK_ENTRY_TOKEN { + mark := token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_BLOCK_ENTRY_TOKEN && + token.typ != yaml_KEY_TOKEN && + token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE) + return yaml_parser_parse_node(parser, event, true, false) + } + parser.state = yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + start_mark: token.start_mark, + end_mark: token.start_mark, // [Go] Shouldn't this be token.end_mark? + } + return true +} + +// Parse the productions: +// block_mapping ::= BLOCK-MAPPING_START +// ******************* +// ((KEY block_node_or_indentless_sequence?)? +// *** * +// (VALUE block_node_or_indentless_sequence?)?)* +// +// BLOCK-END +// ********* +// +func yaml_parser_parse_block_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ == yaml_KEY_TOKEN { + mark := token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_KEY_TOKEN && + token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_VALUE_STATE) + return yaml_parser_parse_node(parser, event, true, true) + } else { + parser.state = yaml_PARSE_BLOCK_MAPPING_VALUE_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + } else if token.typ == yaml_BLOCK_END_TOKEN { + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + skip_token(parser) + return true + } + + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a block mapping", context_mark, + "did not find expected key", token.start_mark) +} + +// Parse the productions: +// block_mapping ::= BLOCK-MAPPING_START +// +// ((KEY block_node_or_indentless_sequence?)? +// +// (VALUE block_node_or_indentless_sequence?)?)* +// ***** * +// BLOCK-END +// +// +func yaml_parser_parse_block_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_VALUE_TOKEN { + mark := token.end_mark + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_KEY_TOKEN && + token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_BLOCK_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_BLOCK_MAPPING_KEY_STATE) + return yaml_parser_parse_node(parser, event, true, true) + } + parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) + } + parser.state = yaml_PARSE_BLOCK_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) +} + +// Parse the productions: +// flow_sequence ::= FLOW-SEQUENCE-START +// ******************* +// (flow_sequence_entry FLOW-ENTRY)* +// * ********** +// flow_sequence_entry? +// * +// FLOW-SEQUENCE-END +// ***************** +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * +// +func yaml_parser_parse_flow_sequence_entry(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + if !first { + if token.typ == yaml_FLOW_ENTRY_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } else { + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a flow sequence", context_mark, + "did not find expected ',' or ']'", token.start_mark) + } + } + + if token.typ == yaml_KEY_TOKEN { + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_START_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + implicit: true, + style: yaml_style_t(yaml_FLOW_MAPPING_STYLE), + } + skip_token(parser) + return true + } else if token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + + *event = yaml_event_t{ + typ: yaml_SEQUENCE_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + + skip_token(parser) + return true +} + +// +// Parse the productions: +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// *** * +// +func yaml_parser_parse_flow_sequence_entry_mapping_key(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_FLOW_ENTRY_TOKEN && + token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + mark := token.end_mark + skip_token(parser) + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE + return yaml_parser_process_empty_scalar(parser, event, mark) +} + +// Parse the productions: +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// ***** * +// +func yaml_parser_parse_flow_sequence_entry_mapping_value(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + if token.typ == yaml_VALUE_TOKEN { + skip_token(parser) + token := peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_SEQUENCE_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) +} + +// Parse the productions: +// flow_sequence_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * +// +func yaml_parser_parse_flow_sequence_entry_mapping_end(parser *yaml_parser_t, event *yaml_event_t) bool { + token := peek_token(parser) + if token == nil { + return false + } + parser.state = yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + start_mark: token.start_mark, + end_mark: token.start_mark, // [Go] Shouldn't this be end_mark? + } + return true +} + +// Parse the productions: +// flow_mapping ::= FLOW-MAPPING-START +// ****************** +// (flow_mapping_entry FLOW-ENTRY)* +// * ********** +// flow_mapping_entry? +// ****************** +// FLOW-MAPPING-END +// **************** +// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * *** * +// +func yaml_parser_parse_flow_mapping_key(parser *yaml_parser_t, event *yaml_event_t, first bool) bool { + if first { + token := peek_token(parser) + parser.marks = append(parser.marks, token.start_mark) + skip_token(parser) + } + + token := peek_token(parser) + if token == nil { + return false + } + + if token.typ != yaml_FLOW_MAPPING_END_TOKEN { + if !first { + if token.typ == yaml_FLOW_ENTRY_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } else { + context_mark := parser.marks[len(parser.marks)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + return yaml_parser_set_parser_error_context(parser, + "while parsing a flow mapping", context_mark, + "did not find expected ',' or '}'", token.start_mark) + } + } + + if token.typ == yaml_KEY_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_VALUE_TOKEN && + token.typ != yaml_FLOW_ENTRY_TOKEN && + token.typ != yaml_FLOW_MAPPING_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_VALUE_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } else { + parser.state = yaml_PARSE_FLOW_MAPPING_VALUE_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) + } + } else if token.typ != yaml_FLOW_MAPPING_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + + parser.state = parser.states[len(parser.states)-1] + parser.states = parser.states[:len(parser.states)-1] + parser.marks = parser.marks[:len(parser.marks)-1] + *event = yaml_event_t{ + typ: yaml_MAPPING_END_EVENT, + start_mark: token.start_mark, + end_mark: token.end_mark, + } + skip_token(parser) + return true +} + +// Parse the productions: +// flow_mapping_entry ::= flow_node | KEY flow_node? (VALUE flow_node?)? +// * ***** * +// +func yaml_parser_parse_flow_mapping_value(parser *yaml_parser_t, event *yaml_event_t, empty bool) bool { + token := peek_token(parser) + if token == nil { + return false + } + if empty { + parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) + } + if token.typ == yaml_VALUE_TOKEN { + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + if token.typ != yaml_FLOW_ENTRY_TOKEN && token.typ != yaml_FLOW_MAPPING_END_TOKEN { + parser.states = append(parser.states, yaml_PARSE_FLOW_MAPPING_KEY_STATE) + return yaml_parser_parse_node(parser, event, false, false) + } + } + parser.state = yaml_PARSE_FLOW_MAPPING_KEY_STATE + return yaml_parser_process_empty_scalar(parser, event, token.start_mark) +} + +// Generate an empty scalar event. +func yaml_parser_process_empty_scalar(parser *yaml_parser_t, event *yaml_event_t, mark yaml_mark_t) bool { + *event = yaml_event_t{ + typ: yaml_SCALAR_EVENT, + start_mark: mark, + end_mark: mark, + value: nil, // Empty + implicit: true, + style: yaml_style_t(yaml_PLAIN_SCALAR_STYLE), + } + return true +} + +var default_tag_directives = []yaml_tag_directive_t{ + {[]byte("!"), []byte("!")}, + {[]byte("!!"), []byte("tag:yaml.org,2002:")}, +} + +// Parse directives. +func yaml_parser_process_directives(parser *yaml_parser_t, + version_directive_ref **yaml_version_directive_t, + tag_directives_ref *[]yaml_tag_directive_t) bool { + + var version_directive *yaml_version_directive_t + var tag_directives []yaml_tag_directive_t + + token := peek_token(parser) + if token == nil { + return false + } + + for token.typ == yaml_VERSION_DIRECTIVE_TOKEN || token.typ == yaml_TAG_DIRECTIVE_TOKEN { + if token.typ == yaml_VERSION_DIRECTIVE_TOKEN { + if version_directive != nil { + yaml_parser_set_parser_error(parser, + "found duplicate %YAML directive", token.start_mark) + return false + } + if token.major != 1 || token.minor != 1 { + yaml_parser_set_parser_error(parser, + "found incompatible YAML document", token.start_mark) + return false + } + version_directive = &yaml_version_directive_t{ + major: token.major, + minor: token.minor, + } + } else if token.typ == yaml_TAG_DIRECTIVE_TOKEN { + value := yaml_tag_directive_t{ + handle: token.value, + prefix: token.prefix, + } + if !yaml_parser_append_tag_directive(parser, value, false, token.start_mark) { + return false + } + tag_directives = append(tag_directives, value) + } + + skip_token(parser) + token = peek_token(parser) + if token == nil { + return false + } + } + + for i := range default_tag_directives { + if !yaml_parser_append_tag_directive(parser, default_tag_directives[i], true, token.start_mark) { + return false + } + } + + if version_directive_ref != nil { + *version_directive_ref = version_directive + } + if tag_directives_ref != nil { + *tag_directives_ref = tag_directives + } + return true +} + +// Append a tag directive to the directives stack. +func yaml_parser_append_tag_directive(parser *yaml_parser_t, value yaml_tag_directive_t, allow_duplicates bool, mark yaml_mark_t) bool { + for i := range parser.tag_directives { + if bytes.Equal(value.handle, parser.tag_directives[i].handle) { + if allow_duplicates { + return true + } + return yaml_parser_set_parser_error(parser, "found duplicate %TAG directive", mark) + } + } + + // [Go] I suspect the copy is unnecessary. This was likely done + // because there was no way to track ownership of the data. + value_copy := yaml_tag_directive_t{ + handle: make([]byte, len(value.handle)), + prefix: make([]byte, len(value.prefix)), + } + copy(value_copy.handle, value.handle) + copy(value_copy.prefix, value.prefix) + parser.tag_directives = append(parser.tag_directives, value_copy) + return true +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/readerc.go b/components/engine/vendor/gopkg.in/yaml.v2/readerc.go new file mode 100644 index 0000000000..f450791717 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/readerc.go @@ -0,0 +1,394 @@ +package yaml + +import ( + "io" +) + +// Set the reader error and return 0. +func yaml_parser_set_reader_error(parser *yaml_parser_t, problem string, offset int, value int) bool { + parser.error = yaml_READER_ERROR + parser.problem = problem + parser.problem_offset = offset + parser.problem_value = value + return false +} + +// Byte order marks. +const ( + bom_UTF8 = "\xef\xbb\xbf" + bom_UTF16LE = "\xff\xfe" + bom_UTF16BE = "\xfe\xff" +) + +// Determine the input stream encoding by checking the BOM symbol. If no BOM is +// found, the UTF-8 encoding is assumed. Return 1 on success, 0 on failure. +func yaml_parser_determine_encoding(parser *yaml_parser_t) bool { + // Ensure that we had enough bytes in the raw buffer. + for !parser.eof && len(parser.raw_buffer)-parser.raw_buffer_pos < 3 { + if !yaml_parser_update_raw_buffer(parser) { + return false + } + } + + // Determine the encoding. + buf := parser.raw_buffer + pos := parser.raw_buffer_pos + avail := len(buf) - pos + if avail >= 2 && buf[pos] == bom_UTF16LE[0] && buf[pos+1] == bom_UTF16LE[1] { + parser.encoding = yaml_UTF16LE_ENCODING + parser.raw_buffer_pos += 2 + parser.offset += 2 + } else if avail >= 2 && buf[pos] == bom_UTF16BE[0] && buf[pos+1] == bom_UTF16BE[1] { + parser.encoding = yaml_UTF16BE_ENCODING + parser.raw_buffer_pos += 2 + parser.offset += 2 + } else if avail >= 3 && buf[pos] == bom_UTF8[0] && buf[pos+1] == bom_UTF8[1] && buf[pos+2] == bom_UTF8[2] { + parser.encoding = yaml_UTF8_ENCODING + parser.raw_buffer_pos += 3 + parser.offset += 3 + } else { + parser.encoding = yaml_UTF8_ENCODING + } + return true +} + +// Update the raw buffer. +func yaml_parser_update_raw_buffer(parser *yaml_parser_t) bool { + size_read := 0 + + // Return if the raw buffer is full. + if parser.raw_buffer_pos == 0 && len(parser.raw_buffer) == cap(parser.raw_buffer) { + return true + } + + // Return on EOF. + if parser.eof { + return true + } + + // Move the remaining bytes in the raw buffer to the beginning. + if parser.raw_buffer_pos > 0 && parser.raw_buffer_pos < len(parser.raw_buffer) { + copy(parser.raw_buffer, parser.raw_buffer[parser.raw_buffer_pos:]) + } + parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)-parser.raw_buffer_pos] + parser.raw_buffer_pos = 0 + + // Call the read handler to fill the buffer. + size_read, err := parser.read_handler(parser, parser.raw_buffer[len(parser.raw_buffer):cap(parser.raw_buffer)]) + parser.raw_buffer = parser.raw_buffer[:len(parser.raw_buffer)+size_read] + if err == io.EOF { + parser.eof = true + } else if err != nil { + return yaml_parser_set_reader_error(parser, "input error: "+err.Error(), parser.offset, -1) + } + return true +} + +// Ensure that the buffer contains at least `length` characters. +// Return true on success, false on failure. +// +// The length is supposed to be significantly less that the buffer size. +func yaml_parser_update_buffer(parser *yaml_parser_t, length int) bool { + if parser.read_handler == nil { + panic("read handler must be set") + } + + // If the EOF flag is set and the raw buffer is empty, do nothing. + if parser.eof && parser.raw_buffer_pos == len(parser.raw_buffer) { + return true + } + + // Return if the buffer contains enough characters. + if parser.unread >= length { + return true + } + + // Determine the input encoding if it is not known yet. + if parser.encoding == yaml_ANY_ENCODING { + if !yaml_parser_determine_encoding(parser) { + return false + } + } + + // Move the unread characters to the beginning of the buffer. + buffer_len := len(parser.buffer) + if parser.buffer_pos > 0 && parser.buffer_pos < buffer_len { + copy(parser.buffer, parser.buffer[parser.buffer_pos:]) + buffer_len -= parser.buffer_pos + parser.buffer_pos = 0 + } else if parser.buffer_pos == buffer_len { + buffer_len = 0 + parser.buffer_pos = 0 + } + + // Open the whole buffer for writing, and cut it before returning. + parser.buffer = parser.buffer[:cap(parser.buffer)] + + // Fill the buffer until it has enough characters. + first := true + for parser.unread < length { + + // Fill the raw buffer if necessary. + if !first || parser.raw_buffer_pos == len(parser.raw_buffer) { + if !yaml_parser_update_raw_buffer(parser) { + parser.buffer = parser.buffer[:buffer_len] + return false + } + } + first = false + + // Decode the raw buffer. + inner: + for parser.raw_buffer_pos != len(parser.raw_buffer) { + var value rune + var width int + + raw_unread := len(parser.raw_buffer) - parser.raw_buffer_pos + + // Decode the next character. + switch parser.encoding { + case yaml_UTF8_ENCODING: + // Decode a UTF-8 character. Check RFC 3629 + // (http://www.ietf.org/rfc/rfc3629.txt) for more details. + // + // The following table (taken from the RFC) is used for + // decoding. + // + // Char. number range | UTF-8 octet sequence + // (hexadecimal) | (binary) + // --------------------+------------------------------------ + // 0000 0000-0000 007F | 0xxxxxxx + // 0000 0080-0000 07FF | 110xxxxx 10xxxxxx + // 0000 0800-0000 FFFF | 1110xxxx 10xxxxxx 10xxxxxx + // 0001 0000-0010 FFFF | 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx + // + // Additionally, the characters in the range 0xD800-0xDFFF + // are prohibited as they are reserved for use with UTF-16 + // surrogate pairs. + + // Determine the length of the UTF-8 sequence. + octet := parser.raw_buffer[parser.raw_buffer_pos] + switch { + case octet&0x80 == 0x00: + width = 1 + case octet&0xE0 == 0xC0: + width = 2 + case octet&0xF0 == 0xE0: + width = 3 + case octet&0xF8 == 0xF0: + width = 4 + default: + // The leading octet is invalid. + return yaml_parser_set_reader_error(parser, + "invalid leading UTF-8 octet", + parser.offset, int(octet)) + } + + // Check if the raw buffer contains an incomplete character. + if width > raw_unread { + if parser.eof { + return yaml_parser_set_reader_error(parser, + "incomplete UTF-8 octet sequence", + parser.offset, -1) + } + break inner + } + + // Decode the leading octet. + switch { + case octet&0x80 == 0x00: + value = rune(octet & 0x7F) + case octet&0xE0 == 0xC0: + value = rune(octet & 0x1F) + case octet&0xF0 == 0xE0: + value = rune(octet & 0x0F) + case octet&0xF8 == 0xF0: + value = rune(octet & 0x07) + default: + value = 0 + } + + // Check and decode the trailing octets. + for k := 1; k < width; k++ { + octet = parser.raw_buffer[parser.raw_buffer_pos+k] + + // Check if the octet is valid. + if (octet & 0xC0) != 0x80 { + return yaml_parser_set_reader_error(parser, + "invalid trailing UTF-8 octet", + parser.offset+k, int(octet)) + } + + // Decode the octet. + value = (value << 6) + rune(octet&0x3F) + } + + // Check the length of the sequence against the value. + switch { + case width == 1: + case width == 2 && value >= 0x80: + case width == 3 && value >= 0x800: + case width == 4 && value >= 0x10000: + default: + return yaml_parser_set_reader_error(parser, + "invalid length of a UTF-8 sequence", + parser.offset, -1) + } + + // Check the range of the value. + if value >= 0xD800 && value <= 0xDFFF || value > 0x10FFFF { + return yaml_parser_set_reader_error(parser, + "invalid Unicode character", + parser.offset, int(value)) + } + + case yaml_UTF16LE_ENCODING, yaml_UTF16BE_ENCODING: + var low, high int + if parser.encoding == yaml_UTF16LE_ENCODING { + low, high = 0, 1 + } else { + low, high = 1, 0 + } + + // The UTF-16 encoding is not as simple as one might + // naively think. Check RFC 2781 + // (http://www.ietf.org/rfc/rfc2781.txt). + // + // Normally, two subsequent bytes describe a Unicode + // character. However a special technique (called a + // surrogate pair) is used for specifying character + // values larger than 0xFFFF. + // + // A surrogate pair consists of two pseudo-characters: + // high surrogate area (0xD800-0xDBFF) + // low surrogate area (0xDC00-0xDFFF) + // + // The following formulas are used for decoding + // and encoding characters using surrogate pairs: + // + // U = U' + 0x10000 (0x01 00 00 <= U <= 0x10 FF FF) + // U' = yyyyyyyyyyxxxxxxxxxx (0 <= U' <= 0x0F FF FF) + // W1 = 110110yyyyyyyyyy + // W2 = 110111xxxxxxxxxx + // + // where U is the character value, W1 is the high surrogate + // area, W2 is the low surrogate area. + + // Check for incomplete UTF-16 character. + if raw_unread < 2 { + if parser.eof { + return yaml_parser_set_reader_error(parser, + "incomplete UTF-16 character", + parser.offset, -1) + } + break inner + } + + // Get the character. + value = rune(parser.raw_buffer[parser.raw_buffer_pos+low]) + + (rune(parser.raw_buffer[parser.raw_buffer_pos+high]) << 8) + + // Check for unexpected low surrogate area. + if value&0xFC00 == 0xDC00 { + return yaml_parser_set_reader_error(parser, + "unexpected low surrogate area", + parser.offset, int(value)) + } + + // Check for a high surrogate area. + if value&0xFC00 == 0xD800 { + width = 4 + + // Check for incomplete surrogate pair. + if raw_unread < 4 { + if parser.eof { + return yaml_parser_set_reader_error(parser, + "incomplete UTF-16 surrogate pair", + parser.offset, -1) + } + break inner + } + + // Get the next character. + value2 := rune(parser.raw_buffer[parser.raw_buffer_pos+low+2]) + + (rune(parser.raw_buffer[parser.raw_buffer_pos+high+2]) << 8) + + // Check for a low surrogate area. + if value2&0xFC00 != 0xDC00 { + return yaml_parser_set_reader_error(parser, + "expected low surrogate area", + parser.offset+2, int(value2)) + } + + // Generate the value of the surrogate pair. + value = 0x10000 + ((value & 0x3FF) << 10) + (value2 & 0x3FF) + } else { + width = 2 + } + + default: + panic("impossible") + } + + // Check if the character is in the allowed range: + // #x9 | #xA | #xD | [#x20-#x7E] (8 bit) + // | #x85 | [#xA0-#xD7FF] | [#xE000-#xFFFD] (16 bit) + // | [#x10000-#x10FFFF] (32 bit) + switch { + case value == 0x09: + case value == 0x0A: + case value == 0x0D: + case value >= 0x20 && value <= 0x7E: + case value == 0x85: + case value >= 0xA0 && value <= 0xD7FF: + case value >= 0xE000 && value <= 0xFFFD: + case value >= 0x10000 && value <= 0x10FFFF: + default: + return yaml_parser_set_reader_error(parser, + "control characters are not allowed", + parser.offset, int(value)) + } + + // Move the raw pointers. + parser.raw_buffer_pos += width + parser.offset += width + + // Finally put the character into the buffer. + if value <= 0x7F { + // 0000 0000-0000 007F . 0xxxxxxx + parser.buffer[buffer_len+0] = byte(value) + buffer_len += 1 + } else if value <= 0x7FF { + // 0000 0080-0000 07FF . 110xxxxx 10xxxxxx + parser.buffer[buffer_len+0] = byte(0xC0 + (value >> 6)) + parser.buffer[buffer_len+1] = byte(0x80 + (value & 0x3F)) + buffer_len += 2 + } else if value <= 0xFFFF { + // 0000 0800-0000 FFFF . 1110xxxx 10xxxxxx 10xxxxxx + parser.buffer[buffer_len+0] = byte(0xE0 + (value >> 12)) + parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 6) & 0x3F)) + parser.buffer[buffer_len+2] = byte(0x80 + (value & 0x3F)) + buffer_len += 3 + } else { + // 0001 0000-0010 FFFF . 11110xxx 10xxxxxx 10xxxxxx 10xxxxxx + parser.buffer[buffer_len+0] = byte(0xF0 + (value >> 18)) + parser.buffer[buffer_len+1] = byte(0x80 + ((value >> 12) & 0x3F)) + parser.buffer[buffer_len+2] = byte(0x80 + ((value >> 6) & 0x3F)) + parser.buffer[buffer_len+3] = byte(0x80 + (value & 0x3F)) + buffer_len += 4 + } + + parser.unread++ + } + + // On EOF, put NUL into the buffer and return. + if parser.eof { + parser.buffer[buffer_len] = 0 + buffer_len++ + parser.unread++ + break + } + } + parser.buffer = parser.buffer[:buffer_len] + return true +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/resolve.go b/components/engine/vendor/gopkg.in/yaml.v2/resolve.go new file mode 100644 index 0000000000..93a8632743 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/resolve.go @@ -0,0 +1,203 @@ +package yaml + +import ( + "encoding/base64" + "math" + "strconv" + "strings" + "unicode/utf8" +) + +type resolveMapItem struct { + value interface{} + tag string +} + +var resolveTable = make([]byte, 256) +var resolveMap = make(map[string]resolveMapItem) + +func init() { + t := resolveTable + t[int('+')] = 'S' // Sign + t[int('-')] = 'S' + for _, c := range "0123456789" { + t[int(c)] = 'D' // Digit + } + for _, c := range "yYnNtTfFoO~" { + t[int(c)] = 'M' // In map + } + t[int('.')] = '.' // Float (potentially in map) + + var resolveMapList = []struct { + v interface{} + tag string + l []string + }{ + {true, yaml_BOOL_TAG, []string{"y", "Y", "yes", "Yes", "YES"}}, + {true, yaml_BOOL_TAG, []string{"true", "True", "TRUE"}}, + {true, yaml_BOOL_TAG, []string{"on", "On", "ON"}}, + {false, yaml_BOOL_TAG, []string{"n", "N", "no", "No", "NO"}}, + {false, yaml_BOOL_TAG, []string{"false", "False", "FALSE"}}, + {false, yaml_BOOL_TAG, []string{"off", "Off", "OFF"}}, + {nil, yaml_NULL_TAG, []string{"", "~", "null", "Null", "NULL"}}, + {math.NaN(), yaml_FLOAT_TAG, []string{".nan", ".NaN", ".NAN"}}, + {math.Inf(+1), yaml_FLOAT_TAG, []string{".inf", ".Inf", ".INF"}}, + {math.Inf(+1), yaml_FLOAT_TAG, []string{"+.inf", "+.Inf", "+.INF"}}, + {math.Inf(-1), yaml_FLOAT_TAG, []string{"-.inf", "-.Inf", "-.INF"}}, + {"<<", yaml_MERGE_TAG, []string{"<<"}}, + } + + m := resolveMap + for _, item := range resolveMapList { + for _, s := range item.l { + m[s] = resolveMapItem{item.v, item.tag} + } + } +} + +const longTagPrefix = "tag:yaml.org,2002:" + +func shortTag(tag string) string { + // TODO This can easily be made faster and produce less garbage. + if strings.HasPrefix(tag, longTagPrefix) { + return "!!" + tag[len(longTagPrefix):] + } + return tag +} + +func longTag(tag string) string { + if strings.HasPrefix(tag, "!!") { + return longTagPrefix + tag[2:] + } + return tag +} + +func resolvableTag(tag string) bool { + switch tag { + case "", yaml_STR_TAG, yaml_BOOL_TAG, yaml_INT_TAG, yaml_FLOAT_TAG, yaml_NULL_TAG: + return true + } + return false +} + +func resolve(tag string, in string) (rtag string, out interface{}) { + if !resolvableTag(tag) { + return tag, in + } + + defer func() { + switch tag { + case "", rtag, yaml_STR_TAG, yaml_BINARY_TAG: + return + } + failf("cannot decode %s `%s` as a %s", shortTag(rtag), in, shortTag(tag)) + }() + + // Any data is accepted as a !!str or !!binary. + // Otherwise, the prefix is enough of a hint about what it might be. + hint := byte('N') + if in != "" { + hint = resolveTable[in[0]] + } + if hint != 0 && tag != yaml_STR_TAG && tag != yaml_BINARY_TAG { + // Handle things we can lookup in a map. + if item, ok := resolveMap[in]; ok { + return item.tag, item.value + } + + // Base 60 floats are a bad idea, were dropped in YAML 1.2, and + // are purposefully unsupported here. They're still quoted on + // the way out for compatibility with other parser, though. + + switch hint { + case 'M': + // We've already checked the map above. + + case '.': + // Not in the map, so maybe a normal float. + floatv, err := strconv.ParseFloat(in, 64) + if err == nil { + return yaml_FLOAT_TAG, floatv + } + + case 'D', 'S': + // Int, float, or timestamp. + plain := strings.Replace(in, "_", "", -1) + intv, err := strconv.ParseInt(plain, 0, 64) + if err == nil { + if intv == int64(int(intv)) { + return yaml_INT_TAG, int(intv) + } else { + return yaml_INT_TAG, intv + } + } + uintv, err := strconv.ParseUint(plain, 0, 64) + if err == nil { + return yaml_INT_TAG, uintv + } + floatv, err := strconv.ParseFloat(plain, 64) + if err == nil { + return yaml_FLOAT_TAG, floatv + } + if strings.HasPrefix(plain, "0b") { + intv, err := strconv.ParseInt(plain[2:], 2, 64) + if err == nil { + if intv == int64(int(intv)) { + return yaml_INT_TAG, int(intv) + } else { + return yaml_INT_TAG, intv + } + } + uintv, err := strconv.ParseUint(plain[2:], 2, 64) + if err == nil { + return yaml_INT_TAG, uintv + } + } else if strings.HasPrefix(plain, "-0b") { + intv, err := strconv.ParseInt(plain[3:], 2, 64) + if err == nil { + if intv == int64(int(intv)) { + return yaml_INT_TAG, -int(intv) + } else { + return yaml_INT_TAG, -intv + } + } + } + // XXX Handle timestamps here. + + default: + panic("resolveTable item not yet handled: " + string(rune(hint)) + " (with " + in + ")") + } + } + if tag == yaml_BINARY_TAG { + return yaml_BINARY_TAG, in + } + if utf8.ValidString(in) { + return yaml_STR_TAG, in + } + return yaml_BINARY_TAG, encodeBase64(in) +} + +// encodeBase64 encodes s as base64 that is broken up into multiple lines +// as appropriate for the resulting length. +func encodeBase64(s string) string { + const lineLen = 70 + encLen := base64.StdEncoding.EncodedLen(len(s)) + lines := encLen/lineLen + 1 + buf := make([]byte, encLen*2+lines) + in := buf[0:encLen] + out := buf[encLen:] + base64.StdEncoding.Encode(in, []byte(s)) + k := 0 + for i := 0; i < len(in); i += lineLen { + j := i + lineLen + if j > len(in) { + j = len(in) + } + k += copy(out[k:], in[i:j]) + if lines > 1 { + out[k] = '\n' + k++ + } + } + return string(out[:k]) +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/scannerc.go b/components/engine/vendor/gopkg.in/yaml.v2/scannerc.go new file mode 100644 index 0000000000..25808000f2 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/scannerc.go @@ -0,0 +1,2710 @@ +package yaml + +import ( + "bytes" + "fmt" +) + +// Introduction +// ************ +// +// The following notes assume that you are familiar with the YAML specification +// (http://yaml.org/spec/cvs/current.html). We mostly follow it, although in +// some cases we are less restrictive that it requires. +// +// The process of transforming a YAML stream into a sequence of events is +// divided on two steps: Scanning and Parsing. +// +// The Scanner transforms the input stream into a sequence of tokens, while the +// parser transform the sequence of tokens produced by the Scanner into a +// sequence of parsing events. +// +// The Scanner is rather clever and complicated. The Parser, on the contrary, +// is a straightforward implementation of a recursive-descendant parser (or, +// LL(1) parser, as it is usually called). +// +// Actually there are two issues of Scanning that might be called "clever", the +// rest is quite straightforward. The issues are "block collection start" and +// "simple keys". Both issues are explained below in details. +// +// Here the Scanning step is explained and implemented. We start with the list +// of all the tokens produced by the Scanner together with short descriptions. +// +// Now, tokens: +// +// STREAM-START(encoding) # The stream start. +// STREAM-END # The stream end. +// VERSION-DIRECTIVE(major,minor) # The '%YAML' directive. +// TAG-DIRECTIVE(handle,prefix) # The '%TAG' directive. +// DOCUMENT-START # '---' +// DOCUMENT-END # '...' +// BLOCK-SEQUENCE-START # Indentation increase denoting a block +// BLOCK-MAPPING-START # sequence or a block mapping. +// BLOCK-END # Indentation decrease. +// FLOW-SEQUENCE-START # '[' +// FLOW-SEQUENCE-END # ']' +// BLOCK-SEQUENCE-START # '{' +// BLOCK-SEQUENCE-END # '}' +// BLOCK-ENTRY # '-' +// FLOW-ENTRY # ',' +// KEY # '?' or nothing (simple keys). +// VALUE # ':' +// ALIAS(anchor) # '*anchor' +// ANCHOR(anchor) # '&anchor' +// TAG(handle,suffix) # '!handle!suffix' +// SCALAR(value,style) # A scalar. +// +// The following two tokens are "virtual" tokens denoting the beginning and the +// end of the stream: +// +// STREAM-START(encoding) +// STREAM-END +// +// We pass the information about the input stream encoding with the +// STREAM-START token. +// +// The next two tokens are responsible for tags: +// +// VERSION-DIRECTIVE(major,minor) +// TAG-DIRECTIVE(handle,prefix) +// +// Example: +// +// %YAML 1.1 +// %TAG ! !foo +// %TAG !yaml! tag:yaml.org,2002: +// --- +// +// The correspoding sequence of tokens: +// +// STREAM-START(utf-8) +// VERSION-DIRECTIVE(1,1) +// TAG-DIRECTIVE("!","!foo") +// TAG-DIRECTIVE("!yaml","tag:yaml.org,2002:") +// DOCUMENT-START +// STREAM-END +// +// Note that the VERSION-DIRECTIVE and TAG-DIRECTIVE tokens occupy a whole +// line. +// +// The document start and end indicators are represented by: +// +// DOCUMENT-START +// DOCUMENT-END +// +// Note that if a YAML stream contains an implicit document (without '---' +// and '...' indicators), no DOCUMENT-START and DOCUMENT-END tokens will be +// produced. +// +// In the following examples, we present whole documents together with the +// produced tokens. +// +// 1. An implicit document: +// +// 'a scalar' +// +// Tokens: +// +// STREAM-START(utf-8) +// SCALAR("a scalar",single-quoted) +// STREAM-END +// +// 2. An explicit document: +// +// --- +// 'a scalar' +// ... +// +// Tokens: +// +// STREAM-START(utf-8) +// DOCUMENT-START +// SCALAR("a scalar",single-quoted) +// DOCUMENT-END +// STREAM-END +// +// 3. Several documents in a stream: +// +// 'a scalar' +// --- +// 'another scalar' +// --- +// 'yet another scalar' +// +// Tokens: +// +// STREAM-START(utf-8) +// SCALAR("a scalar",single-quoted) +// DOCUMENT-START +// SCALAR("another scalar",single-quoted) +// DOCUMENT-START +// SCALAR("yet another scalar",single-quoted) +// STREAM-END +// +// We have already introduced the SCALAR token above. The following tokens are +// used to describe aliases, anchors, tag, and scalars: +// +// ALIAS(anchor) +// ANCHOR(anchor) +// TAG(handle,suffix) +// SCALAR(value,style) +// +// The following series of examples illustrate the usage of these tokens: +// +// 1. A recursive sequence: +// +// &A [ *A ] +// +// Tokens: +// +// STREAM-START(utf-8) +// ANCHOR("A") +// FLOW-SEQUENCE-START +// ALIAS("A") +// FLOW-SEQUENCE-END +// STREAM-END +// +// 2. A tagged scalar: +// +// !!float "3.14" # A good approximation. +// +// Tokens: +// +// STREAM-START(utf-8) +// TAG("!!","float") +// SCALAR("3.14",double-quoted) +// STREAM-END +// +// 3. Various scalar styles: +// +// --- # Implicit empty plain scalars do not produce tokens. +// --- a plain scalar +// --- 'a single-quoted scalar' +// --- "a double-quoted scalar" +// --- |- +// a literal scalar +// --- >- +// a folded +// scalar +// +// Tokens: +// +// STREAM-START(utf-8) +// DOCUMENT-START +// DOCUMENT-START +// SCALAR("a plain scalar",plain) +// DOCUMENT-START +// SCALAR("a single-quoted scalar",single-quoted) +// DOCUMENT-START +// SCALAR("a double-quoted scalar",double-quoted) +// DOCUMENT-START +// SCALAR("a literal scalar",literal) +// DOCUMENT-START +// SCALAR("a folded scalar",folded) +// STREAM-END +// +// Now it's time to review collection-related tokens. We will start with +// flow collections: +// +// FLOW-SEQUENCE-START +// FLOW-SEQUENCE-END +// FLOW-MAPPING-START +// FLOW-MAPPING-END +// FLOW-ENTRY +// KEY +// VALUE +// +// The tokens FLOW-SEQUENCE-START, FLOW-SEQUENCE-END, FLOW-MAPPING-START, and +// FLOW-MAPPING-END represent the indicators '[', ']', '{', and '}' +// correspondingly. FLOW-ENTRY represent the ',' indicator. Finally the +// indicators '?' and ':', which are used for denoting mapping keys and values, +// are represented by the KEY and VALUE tokens. +// +// The following examples show flow collections: +// +// 1. A flow sequence: +// +// [item 1, item 2, item 3] +// +// Tokens: +// +// STREAM-START(utf-8) +// FLOW-SEQUENCE-START +// SCALAR("item 1",plain) +// FLOW-ENTRY +// SCALAR("item 2",plain) +// FLOW-ENTRY +// SCALAR("item 3",plain) +// FLOW-SEQUENCE-END +// STREAM-END +// +// 2. A flow mapping: +// +// { +// a simple key: a value, # Note that the KEY token is produced. +// ? a complex key: another value, +// } +// +// Tokens: +// +// STREAM-START(utf-8) +// FLOW-MAPPING-START +// KEY +// SCALAR("a simple key",plain) +// VALUE +// SCALAR("a value",plain) +// FLOW-ENTRY +// KEY +// SCALAR("a complex key",plain) +// VALUE +// SCALAR("another value",plain) +// FLOW-ENTRY +// FLOW-MAPPING-END +// STREAM-END +// +// A simple key is a key which is not denoted by the '?' indicator. Note that +// the Scanner still produce the KEY token whenever it encounters a simple key. +// +// For scanning block collections, the following tokens are used (note that we +// repeat KEY and VALUE here): +// +// BLOCK-SEQUENCE-START +// BLOCK-MAPPING-START +// BLOCK-END +// BLOCK-ENTRY +// KEY +// VALUE +// +// The tokens BLOCK-SEQUENCE-START and BLOCK-MAPPING-START denote indentation +// increase that precedes a block collection (cf. the INDENT token in Python). +// The token BLOCK-END denote indentation decrease that ends a block collection +// (cf. the DEDENT token in Python). However YAML has some syntax pecularities +// that makes detections of these tokens more complex. +// +// The tokens BLOCK-ENTRY, KEY, and VALUE are used to represent the indicators +// '-', '?', and ':' correspondingly. +// +// The following examples show how the tokens BLOCK-SEQUENCE-START, +// BLOCK-MAPPING-START, and BLOCK-END are emitted by the Scanner: +// +// 1. Block sequences: +// +// - item 1 +// - item 2 +// - +// - item 3.1 +// - item 3.2 +// - +// key 1: value 1 +// key 2: value 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-ENTRY +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 3.1",plain) +// BLOCK-ENTRY +// SCALAR("item 3.2",plain) +// BLOCK-END +// BLOCK-ENTRY +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// 2. Block mappings: +// +// a simple key: a value # The KEY token is produced here. +// ? a complex key +// : another value +// a mapping: +// key 1: value 1 +// key 2: value 2 +// a sequence: +// - item 1 +// - item 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-MAPPING-START +// KEY +// SCALAR("a simple key",plain) +// VALUE +// SCALAR("a value",plain) +// KEY +// SCALAR("a complex key",plain) +// VALUE +// SCALAR("another value",plain) +// KEY +// SCALAR("a mapping",plain) +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// KEY +// SCALAR("a sequence",plain) +// VALUE +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// YAML does not always require to start a new block collection from a new +// line. If the current line contains only '-', '?', and ':' indicators, a new +// block collection may start at the current line. The following examples +// illustrate this case: +// +// 1. Collections in a sequence: +// +// - - item 1 +// - item 2 +// - key 1: value 1 +// key 2: value 2 +// - ? complex key +// : complex value +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// BLOCK-ENTRY +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// BLOCK-ENTRY +// BLOCK-MAPPING-START +// KEY +// SCALAR("complex key") +// VALUE +// SCALAR("complex value") +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// 2. Collections in a mapping: +// +// ? a sequence +// : - item 1 +// - item 2 +// ? a mapping +// : key 1: value 1 +// key 2: value 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-MAPPING-START +// KEY +// SCALAR("a sequence",plain) +// VALUE +// BLOCK-SEQUENCE-START +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// KEY +// SCALAR("a mapping",plain) +// VALUE +// BLOCK-MAPPING-START +// KEY +// SCALAR("key 1",plain) +// VALUE +// SCALAR("value 1",plain) +// KEY +// SCALAR("key 2",plain) +// VALUE +// SCALAR("value 2",plain) +// BLOCK-END +// BLOCK-END +// STREAM-END +// +// YAML also permits non-indented sequences if they are included into a block +// mapping. In this case, the token BLOCK-SEQUENCE-START is not produced: +// +// key: +// - item 1 # BLOCK-SEQUENCE-START is NOT produced here. +// - item 2 +// +// Tokens: +// +// STREAM-START(utf-8) +// BLOCK-MAPPING-START +// KEY +// SCALAR("key",plain) +// VALUE +// BLOCK-ENTRY +// SCALAR("item 1",plain) +// BLOCK-ENTRY +// SCALAR("item 2",plain) +// BLOCK-END +// + +// Ensure that the buffer contains the required number of characters. +// Return true on success, false on failure (reader error or memory error). +func cache(parser *yaml_parser_t, length int) bool { + // [Go] This was inlined: !cache(A, B) -> unread < B && !update(A, B) + return parser.unread >= length || yaml_parser_update_buffer(parser, length) +} + +// Advance the buffer pointer. +func skip(parser *yaml_parser_t) { + parser.mark.index++ + parser.mark.column++ + parser.unread-- + parser.buffer_pos += width(parser.buffer[parser.buffer_pos]) +} + +func skip_line(parser *yaml_parser_t) { + if is_crlf(parser.buffer, parser.buffer_pos) { + parser.mark.index += 2 + parser.mark.column = 0 + parser.mark.line++ + parser.unread -= 2 + parser.buffer_pos += 2 + } else if is_break(parser.buffer, parser.buffer_pos) { + parser.mark.index++ + parser.mark.column = 0 + parser.mark.line++ + parser.unread-- + parser.buffer_pos += width(parser.buffer[parser.buffer_pos]) + } +} + +// Copy a character to a string buffer and advance pointers. +func read(parser *yaml_parser_t, s []byte) []byte { + w := width(parser.buffer[parser.buffer_pos]) + if w == 0 { + panic("invalid character sequence") + } + if len(s) == 0 { + s = make([]byte, 0, 32) + } + if w == 1 && len(s)+w <= cap(s) { + s = s[:len(s)+1] + s[len(s)-1] = parser.buffer[parser.buffer_pos] + parser.buffer_pos++ + } else { + s = append(s, parser.buffer[parser.buffer_pos:parser.buffer_pos+w]...) + parser.buffer_pos += w + } + parser.mark.index++ + parser.mark.column++ + parser.unread-- + return s +} + +// Copy a line break character to a string buffer and advance pointers. +func read_line(parser *yaml_parser_t, s []byte) []byte { + buf := parser.buffer + pos := parser.buffer_pos + switch { + case buf[pos] == '\r' && buf[pos+1] == '\n': + // CR LF . LF + s = append(s, '\n') + parser.buffer_pos += 2 + parser.mark.index++ + parser.unread-- + case buf[pos] == '\r' || buf[pos] == '\n': + // CR|LF . LF + s = append(s, '\n') + parser.buffer_pos += 1 + case buf[pos] == '\xC2' && buf[pos+1] == '\x85': + // NEL . LF + s = append(s, '\n') + parser.buffer_pos += 2 + case buf[pos] == '\xE2' && buf[pos+1] == '\x80' && (buf[pos+2] == '\xA8' || buf[pos+2] == '\xA9'): + // LS|PS . LS|PS + s = append(s, buf[parser.buffer_pos:pos+3]...) + parser.buffer_pos += 3 + default: + return s + } + parser.mark.index++ + parser.mark.column = 0 + parser.mark.line++ + parser.unread-- + return s +} + +// Get the next token. +func yaml_parser_scan(parser *yaml_parser_t, token *yaml_token_t) bool { + // Erase the token object. + *token = yaml_token_t{} // [Go] Is this necessary? + + // No tokens after STREAM-END or error. + if parser.stream_end_produced || parser.error != yaml_NO_ERROR { + return true + } + + // Ensure that the tokens queue contains enough tokens. + if !parser.token_available { + if !yaml_parser_fetch_more_tokens(parser) { + return false + } + } + + // Fetch the next token from the queue. + *token = parser.tokens[parser.tokens_head] + parser.tokens_head++ + parser.tokens_parsed++ + parser.token_available = false + + if token.typ == yaml_STREAM_END_TOKEN { + parser.stream_end_produced = true + } + return true +} + +// Set the scanner error and return false. +func yaml_parser_set_scanner_error(parser *yaml_parser_t, context string, context_mark yaml_mark_t, problem string) bool { + parser.error = yaml_SCANNER_ERROR + parser.context = context + parser.context_mark = context_mark + parser.problem = problem + parser.problem_mark = parser.mark + return false +} + +func yaml_parser_set_scanner_tag_error(parser *yaml_parser_t, directive bool, context_mark yaml_mark_t, problem string) bool { + context := "while parsing a tag" + if directive { + context = "while parsing a %TAG directive" + } + return yaml_parser_set_scanner_error(parser, context, context_mark, "did not find URI escaped octet") +} + +func trace(args ...interface{}) func() { + pargs := append([]interface{}{"+++"}, args...) + fmt.Println(pargs...) + pargs = append([]interface{}{"---"}, args...) + return func() { fmt.Println(pargs...) } +} + +// Ensure that the tokens queue contains at least one token which can be +// returned to the Parser. +func yaml_parser_fetch_more_tokens(parser *yaml_parser_t) bool { + // While we need more tokens to fetch, do it. + for { + // Check if we really need to fetch more tokens. + need_more_tokens := false + + if parser.tokens_head == len(parser.tokens) { + // Queue is empty. + need_more_tokens = true + } else { + // Check if any potential simple key may occupy the head position. + if !yaml_parser_stale_simple_keys(parser) { + return false + } + + for i := range parser.simple_keys { + simple_key := &parser.simple_keys[i] + if simple_key.possible && simple_key.token_number == parser.tokens_parsed { + need_more_tokens = true + break + } + } + } + + // We are finished. + if !need_more_tokens { + break + } + // Fetch the next token. + if !yaml_parser_fetch_next_token(parser) { + return false + } + } + + parser.token_available = true + return true +} + +// The dispatcher for token fetchers. +func yaml_parser_fetch_next_token(parser *yaml_parser_t) bool { + // Ensure that the buffer is initialized. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // Check if we just started scanning. Fetch STREAM-START then. + if !parser.stream_start_produced { + return yaml_parser_fetch_stream_start(parser) + } + + // Eat whitespaces and comments until we reach the next token. + if !yaml_parser_scan_to_next_token(parser) { + return false + } + + // Remove obsolete potential simple keys. + if !yaml_parser_stale_simple_keys(parser) { + return false + } + + // Check the indentation level against the current column. + if !yaml_parser_unroll_indent(parser, parser.mark.column) { + return false + } + + // Ensure that the buffer contains at least 4 characters. 4 is the length + // of the longest indicators ('--- ' and '... '). + if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) { + return false + } + + // Is it the end of the stream? + if is_z(parser.buffer, parser.buffer_pos) { + return yaml_parser_fetch_stream_end(parser) + } + + // Is it a directive? + if parser.mark.column == 0 && parser.buffer[parser.buffer_pos] == '%' { + return yaml_parser_fetch_directive(parser) + } + + buf := parser.buffer + pos := parser.buffer_pos + + // Is it the document start indicator? + if parser.mark.column == 0 && buf[pos] == '-' && buf[pos+1] == '-' && buf[pos+2] == '-' && is_blankz(buf, pos+3) { + return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_START_TOKEN) + } + + // Is it the document end indicator? + if parser.mark.column == 0 && buf[pos] == '.' && buf[pos+1] == '.' && buf[pos+2] == '.' && is_blankz(buf, pos+3) { + return yaml_parser_fetch_document_indicator(parser, yaml_DOCUMENT_END_TOKEN) + } + + // Is it the flow sequence start indicator? + if buf[pos] == '[' { + return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_SEQUENCE_START_TOKEN) + } + + // Is it the flow mapping start indicator? + if parser.buffer[parser.buffer_pos] == '{' { + return yaml_parser_fetch_flow_collection_start(parser, yaml_FLOW_MAPPING_START_TOKEN) + } + + // Is it the flow sequence end indicator? + if parser.buffer[parser.buffer_pos] == ']' { + return yaml_parser_fetch_flow_collection_end(parser, + yaml_FLOW_SEQUENCE_END_TOKEN) + } + + // Is it the flow mapping end indicator? + if parser.buffer[parser.buffer_pos] == '}' { + return yaml_parser_fetch_flow_collection_end(parser, + yaml_FLOW_MAPPING_END_TOKEN) + } + + // Is it the flow entry indicator? + if parser.buffer[parser.buffer_pos] == ',' { + return yaml_parser_fetch_flow_entry(parser) + } + + // Is it the block entry indicator? + if parser.buffer[parser.buffer_pos] == '-' && is_blankz(parser.buffer, parser.buffer_pos+1) { + return yaml_parser_fetch_block_entry(parser) + } + + // Is it the key indicator? + if parser.buffer[parser.buffer_pos] == '?' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) { + return yaml_parser_fetch_key(parser) + } + + // Is it the value indicator? + if parser.buffer[parser.buffer_pos] == ':' && (parser.flow_level > 0 || is_blankz(parser.buffer, parser.buffer_pos+1)) { + return yaml_parser_fetch_value(parser) + } + + // Is it an alias? + if parser.buffer[parser.buffer_pos] == '*' { + return yaml_parser_fetch_anchor(parser, yaml_ALIAS_TOKEN) + } + + // Is it an anchor? + if parser.buffer[parser.buffer_pos] == '&' { + return yaml_parser_fetch_anchor(parser, yaml_ANCHOR_TOKEN) + } + + // Is it a tag? + if parser.buffer[parser.buffer_pos] == '!' { + return yaml_parser_fetch_tag(parser) + } + + // Is it a literal scalar? + if parser.buffer[parser.buffer_pos] == '|' && parser.flow_level == 0 { + return yaml_parser_fetch_block_scalar(parser, true) + } + + // Is it a folded scalar? + if parser.buffer[parser.buffer_pos] == '>' && parser.flow_level == 0 { + return yaml_parser_fetch_block_scalar(parser, false) + } + + // Is it a single-quoted scalar? + if parser.buffer[parser.buffer_pos] == '\'' { + return yaml_parser_fetch_flow_scalar(parser, true) + } + + // Is it a double-quoted scalar? + if parser.buffer[parser.buffer_pos] == '"' { + return yaml_parser_fetch_flow_scalar(parser, false) + } + + // Is it a plain scalar? + // + // A plain scalar may start with any non-blank characters except + // + // '-', '?', ':', ',', '[', ']', '{', '}', + // '#', '&', '*', '!', '|', '>', '\'', '\"', + // '%', '@', '`'. + // + // In the block context (and, for the '-' indicator, in the flow context + // too), it may also start with the characters + // + // '-', '?', ':' + // + // if it is followed by a non-space character. + // + // The last rule is more restrictive than the specification requires. + // [Go] Make this logic more reasonable. + //switch parser.buffer[parser.buffer_pos] { + //case '-', '?', ':', ',', '?', '-', ',', ':', ']', '[', '}', '{', '&', '#', '!', '*', '>', '|', '"', '\'', '@', '%', '-', '`': + //} + if !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '-' || + parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':' || + parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '[' || + parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' || + parser.buffer[parser.buffer_pos] == '}' || parser.buffer[parser.buffer_pos] == '#' || + parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '*' || + parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '|' || + parser.buffer[parser.buffer_pos] == '>' || parser.buffer[parser.buffer_pos] == '\'' || + parser.buffer[parser.buffer_pos] == '"' || parser.buffer[parser.buffer_pos] == '%' || + parser.buffer[parser.buffer_pos] == '@' || parser.buffer[parser.buffer_pos] == '`') || + (parser.buffer[parser.buffer_pos] == '-' && !is_blank(parser.buffer, parser.buffer_pos+1)) || + (parser.flow_level == 0 && + (parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == ':') && + !is_blankz(parser.buffer, parser.buffer_pos+1)) { + return yaml_parser_fetch_plain_scalar(parser) + } + + // If we don't determine the token type so far, it is an error. + return yaml_parser_set_scanner_error(parser, + "while scanning for the next token", parser.mark, + "found character that cannot start any token") +} + +// Check the list of potential simple keys and remove the positions that +// cannot contain simple keys anymore. +func yaml_parser_stale_simple_keys(parser *yaml_parser_t) bool { + // Check for a potential simple key for each flow level. + for i := range parser.simple_keys { + simple_key := &parser.simple_keys[i] + + // The specification requires that a simple key + // + // - is limited to a single line, + // - is shorter than 1024 characters. + if simple_key.possible && (simple_key.mark.line < parser.mark.line || simple_key.mark.index+1024 < parser.mark.index) { + + // Check if the potential simple key to be removed is required. + if simple_key.required { + return yaml_parser_set_scanner_error(parser, + "while scanning a simple key", simple_key.mark, + "could not find expected ':'") + } + simple_key.possible = false + } + } + return true +} + +// Check if a simple key may start at the current position and add it if +// needed. +func yaml_parser_save_simple_key(parser *yaml_parser_t) bool { + // A simple key is required at the current position if the scanner is in + // the block context and the current column coincides with the indentation + // level. + + required := parser.flow_level == 0 && parser.indent == parser.mark.column + + // A simple key is required only when it is the first token in the current + // line. Therefore it is always allowed. But we add a check anyway. + if required && !parser.simple_key_allowed { + panic("should not happen") + } + + // + // If the current position may start a simple key, save it. + // + if parser.simple_key_allowed { + simple_key := yaml_simple_key_t{ + possible: true, + required: required, + token_number: parser.tokens_parsed + (len(parser.tokens) - parser.tokens_head), + } + simple_key.mark = parser.mark + + if !yaml_parser_remove_simple_key(parser) { + return false + } + parser.simple_keys[len(parser.simple_keys)-1] = simple_key + } + return true +} + +// Remove a potential simple key at the current flow level. +func yaml_parser_remove_simple_key(parser *yaml_parser_t) bool { + i := len(parser.simple_keys) - 1 + if parser.simple_keys[i].possible { + // If the key is required, it is an error. + if parser.simple_keys[i].required { + return yaml_parser_set_scanner_error(parser, + "while scanning a simple key", parser.simple_keys[i].mark, + "could not find expected ':'") + } + } + // Remove the key from the stack. + parser.simple_keys[i].possible = false + return true +} + +// Increase the flow level and resize the simple key list if needed. +func yaml_parser_increase_flow_level(parser *yaml_parser_t) bool { + // Reset the simple key on the next level. + parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{}) + + // Increase the flow level. + parser.flow_level++ + return true +} + +// Decrease the flow level. +func yaml_parser_decrease_flow_level(parser *yaml_parser_t) bool { + if parser.flow_level > 0 { + parser.flow_level-- + parser.simple_keys = parser.simple_keys[:len(parser.simple_keys)-1] + } + return true +} + +// Push the current indentation level to the stack and set the new level +// the current column is greater than the indentation level. In this case, +// append or insert the specified token into the token queue. +func yaml_parser_roll_indent(parser *yaml_parser_t, column, number int, typ yaml_token_type_t, mark yaml_mark_t) bool { + // In the flow context, do nothing. + if parser.flow_level > 0 { + return true + } + + if parser.indent < column { + // Push the current indentation level to the stack and set the new + // indentation level. + parser.indents = append(parser.indents, parser.indent) + parser.indent = column + + // Create a token and insert it into the queue. + token := yaml_token_t{ + typ: typ, + start_mark: mark, + end_mark: mark, + } + if number > -1 { + number -= parser.tokens_parsed + } + yaml_insert_token(parser, number, &token) + } + return true +} + +// Pop indentation levels from the indents stack until the current level +// becomes less or equal to the column. For each indentation level, append +// the BLOCK-END token. +func yaml_parser_unroll_indent(parser *yaml_parser_t, column int) bool { + // In the flow context, do nothing. + if parser.flow_level > 0 { + return true + } + + // Loop through the indentation levels in the stack. + for parser.indent > column { + // Create a token and append it to the queue. + token := yaml_token_t{ + typ: yaml_BLOCK_END_TOKEN, + start_mark: parser.mark, + end_mark: parser.mark, + } + yaml_insert_token(parser, -1, &token) + + // Pop the indentation level. + parser.indent = parser.indents[len(parser.indents)-1] + parser.indents = parser.indents[:len(parser.indents)-1] + } + return true +} + +// Initialize the scanner and produce the STREAM-START token. +func yaml_parser_fetch_stream_start(parser *yaml_parser_t) bool { + + // Set the initial indentation. + parser.indent = -1 + + // Initialize the simple key stack. + parser.simple_keys = append(parser.simple_keys, yaml_simple_key_t{}) + + // A simple key is allowed at the beginning of the stream. + parser.simple_key_allowed = true + + // We have started. + parser.stream_start_produced = true + + // Create the STREAM-START token and append it to the queue. + token := yaml_token_t{ + typ: yaml_STREAM_START_TOKEN, + start_mark: parser.mark, + end_mark: parser.mark, + encoding: parser.encoding, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the STREAM-END token and shut down the scanner. +func yaml_parser_fetch_stream_end(parser *yaml_parser_t) bool { + + // Force new line. + if parser.mark.column != 0 { + parser.mark.column = 0 + parser.mark.line++ + } + + // Reset the indentation level. + if !yaml_parser_unroll_indent(parser, -1) { + return false + } + + // Reset simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + parser.simple_key_allowed = false + + // Create the STREAM-END token and append it to the queue. + token := yaml_token_t{ + typ: yaml_STREAM_END_TOKEN, + start_mark: parser.mark, + end_mark: parser.mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce a VERSION-DIRECTIVE or TAG-DIRECTIVE token. +func yaml_parser_fetch_directive(parser *yaml_parser_t) bool { + // Reset the indentation level. + if !yaml_parser_unroll_indent(parser, -1) { + return false + } + + // Reset simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + parser.simple_key_allowed = false + + // Create the YAML-DIRECTIVE or TAG-DIRECTIVE token. + token := yaml_token_t{} + if !yaml_parser_scan_directive(parser, &token) { + return false + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the DOCUMENT-START or DOCUMENT-END token. +func yaml_parser_fetch_document_indicator(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // Reset the indentation level. + if !yaml_parser_unroll_indent(parser, -1) { + return false + } + + // Reset simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + parser.simple_key_allowed = false + + // Consume the token. + start_mark := parser.mark + + skip(parser) + skip(parser) + skip(parser) + + end_mark := parser.mark + + // Create the DOCUMENT-START or DOCUMENT-END token. + token := yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the FLOW-SEQUENCE-START or FLOW-MAPPING-START token. +func yaml_parser_fetch_flow_collection_start(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // The indicators '[' and '{' may start a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // Increase the flow level. + if !yaml_parser_increase_flow_level(parser) { + return false + } + + // A simple key may follow the indicators '[' and '{'. + parser.simple_key_allowed = true + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the FLOW-SEQUENCE-START of FLOW-MAPPING-START token. + token := yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the FLOW-SEQUENCE-END or FLOW-MAPPING-END token. +func yaml_parser_fetch_flow_collection_end(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // Reset any potential simple key on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Decrease the flow level. + if !yaml_parser_decrease_flow_level(parser) { + return false + } + + // No simple keys after the indicators ']' and '}'. + parser.simple_key_allowed = false + + // Consume the token. + + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the FLOW-SEQUENCE-END of FLOW-MAPPING-END token. + token := yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + } + // Append the token to the queue. + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the FLOW-ENTRY token. +func yaml_parser_fetch_flow_entry(parser *yaml_parser_t) bool { + // Reset any potential simple keys on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Simple keys are allowed after ','. + parser.simple_key_allowed = true + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the FLOW-ENTRY token and append it to the queue. + token := yaml_token_t{ + typ: yaml_FLOW_ENTRY_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the BLOCK-ENTRY token. +func yaml_parser_fetch_block_entry(parser *yaml_parser_t) bool { + // Check if the scanner is in the block context. + if parser.flow_level == 0 { + // Check if we are allowed to start a new entry. + if !parser.simple_key_allowed { + return yaml_parser_set_scanner_error(parser, "", parser.mark, + "block sequence entries are not allowed in this context") + } + // Add the BLOCK-SEQUENCE-START token if needed. + if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_SEQUENCE_START_TOKEN, parser.mark) { + return false + } + } else { + // It is an error for the '-' indicator to occur in the flow context, + // but we let the Parser detect and report about it because the Parser + // is able to point to the context. + } + + // Reset any potential simple keys on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Simple keys are allowed after '-'. + parser.simple_key_allowed = true + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the BLOCK-ENTRY token and append it to the queue. + token := yaml_token_t{ + typ: yaml_BLOCK_ENTRY_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the KEY token. +func yaml_parser_fetch_key(parser *yaml_parser_t) bool { + + // In the block context, additional checks are required. + if parser.flow_level == 0 { + // Check if we are allowed to start a new key (not nessesary simple). + if !parser.simple_key_allowed { + return yaml_parser_set_scanner_error(parser, "", parser.mark, + "mapping keys are not allowed in this context") + } + // Add the BLOCK-MAPPING-START token if needed. + if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) { + return false + } + } + + // Reset any potential simple keys on the current flow level. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // Simple keys are allowed after '?' in the block context. + parser.simple_key_allowed = parser.flow_level == 0 + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the KEY token and append it to the queue. + token := yaml_token_t{ + typ: yaml_KEY_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the VALUE token. +func yaml_parser_fetch_value(parser *yaml_parser_t) bool { + + simple_key := &parser.simple_keys[len(parser.simple_keys)-1] + + // Have we found a simple key? + if simple_key.possible { + // Create the KEY token and insert it into the queue. + token := yaml_token_t{ + typ: yaml_KEY_TOKEN, + start_mark: simple_key.mark, + end_mark: simple_key.mark, + } + yaml_insert_token(parser, simple_key.token_number-parser.tokens_parsed, &token) + + // In the block context, we may need to add the BLOCK-MAPPING-START token. + if !yaml_parser_roll_indent(parser, simple_key.mark.column, + simple_key.token_number, + yaml_BLOCK_MAPPING_START_TOKEN, simple_key.mark) { + return false + } + + // Remove the simple key. + simple_key.possible = false + + // A simple key cannot follow another simple key. + parser.simple_key_allowed = false + + } else { + // The ':' indicator follows a complex key. + + // In the block context, extra checks are required. + if parser.flow_level == 0 { + + // Check if we are allowed to start a complex value. + if !parser.simple_key_allowed { + return yaml_parser_set_scanner_error(parser, "", parser.mark, + "mapping values are not allowed in this context") + } + + // Add the BLOCK-MAPPING-START token if needed. + if !yaml_parser_roll_indent(parser, parser.mark.column, -1, yaml_BLOCK_MAPPING_START_TOKEN, parser.mark) { + return false + } + } + + // Simple keys after ':' are allowed in the block context. + parser.simple_key_allowed = parser.flow_level == 0 + } + + // Consume the token. + start_mark := parser.mark + skip(parser) + end_mark := parser.mark + + // Create the VALUE token and append it to the queue. + token := yaml_token_t{ + typ: yaml_VALUE_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the ALIAS or ANCHOR token. +func yaml_parser_fetch_anchor(parser *yaml_parser_t, typ yaml_token_type_t) bool { + // An anchor or an alias could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow an anchor or an alias. + parser.simple_key_allowed = false + + // Create the ALIAS or ANCHOR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_anchor(parser, &token, typ) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the TAG token. +func yaml_parser_fetch_tag(parser *yaml_parser_t) bool { + // A tag could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow a tag. + parser.simple_key_allowed = false + + // Create the TAG token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_tag(parser, &token) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the SCALAR(...,literal) or SCALAR(...,folded) tokens. +func yaml_parser_fetch_block_scalar(parser *yaml_parser_t, literal bool) bool { + // Remove any potential simple keys. + if !yaml_parser_remove_simple_key(parser) { + return false + } + + // A simple key may follow a block scalar. + parser.simple_key_allowed = true + + // Create the SCALAR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_block_scalar(parser, &token, literal) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the SCALAR(...,single-quoted) or SCALAR(...,double-quoted) tokens. +func yaml_parser_fetch_flow_scalar(parser *yaml_parser_t, single bool) bool { + // A plain scalar could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow a flow scalar. + parser.simple_key_allowed = false + + // Create the SCALAR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_flow_scalar(parser, &token, single) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Produce the SCALAR(...,plain) token. +func yaml_parser_fetch_plain_scalar(parser *yaml_parser_t) bool { + // A plain scalar could be a simple key. + if !yaml_parser_save_simple_key(parser) { + return false + } + + // A simple key cannot follow a flow scalar. + parser.simple_key_allowed = false + + // Create the SCALAR token and append it to the queue. + var token yaml_token_t + if !yaml_parser_scan_plain_scalar(parser, &token) { + return false + } + yaml_insert_token(parser, -1, &token) + return true +} + +// Eat whitespaces and comments until the next token is found. +func yaml_parser_scan_to_next_token(parser *yaml_parser_t) bool { + + // Until the next token is not found. + for { + // Allow the BOM mark to start a line. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if parser.mark.column == 0 && is_bom(parser.buffer, parser.buffer_pos) { + skip(parser) + } + + // Eat whitespaces. + // Tabs are allowed: + // - in the flow context + // - in the block context, but not at the beginning of the line or + // after '-', '?', or ':' (complex value). + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for parser.buffer[parser.buffer_pos] == ' ' || ((parser.flow_level > 0 || !parser.simple_key_allowed) && parser.buffer[parser.buffer_pos] == '\t') { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Eat a comment until a line break. + if parser.buffer[parser.buffer_pos] == '#' { + for !is_breakz(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + } + + // If it is a line break, eat it. + if is_break(parser.buffer, parser.buffer_pos) { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + + // In the block context, a new line may start a simple key. + if parser.flow_level == 0 { + parser.simple_key_allowed = true + } + } else { + break // We have found a token. + } + } + + return true +} + +// Scan a YAML-DIRECTIVE or TAG-DIRECTIVE token. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +// %TAG !yaml! tag:yaml.org,2002: \n +// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +// +func yaml_parser_scan_directive(parser *yaml_parser_t, token *yaml_token_t) bool { + // Eat '%'. + start_mark := parser.mark + skip(parser) + + // Scan the directive name. + var name []byte + if !yaml_parser_scan_directive_name(parser, start_mark, &name) { + return false + } + + // Is it a YAML directive? + if bytes.Equal(name, []byte("YAML")) { + // Scan the VERSION directive value. + var major, minor int8 + if !yaml_parser_scan_version_directive_value(parser, start_mark, &major, &minor) { + return false + } + end_mark := parser.mark + + // Create a VERSION-DIRECTIVE token. + *token = yaml_token_t{ + typ: yaml_VERSION_DIRECTIVE_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + major: major, + minor: minor, + } + + // Is it a TAG directive? + } else if bytes.Equal(name, []byte("TAG")) { + // Scan the TAG directive value. + var handle, prefix []byte + if !yaml_parser_scan_tag_directive_value(parser, start_mark, &handle, &prefix) { + return false + } + end_mark := parser.mark + + // Create a TAG-DIRECTIVE token. + *token = yaml_token_t{ + typ: yaml_TAG_DIRECTIVE_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: handle, + prefix: prefix, + } + + // Unknown directive. + } else { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "found unknown directive name") + return false + } + + // Eat the rest of the line including any comments. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + if parser.buffer[parser.buffer_pos] == '#' { + for !is_breakz(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + } + + // Check if we are at the end of the line. + if !is_breakz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "did not find expected comment or line break") + return false + } + + // Eat a line break. + if is_break(parser.buffer, parser.buffer_pos) { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + } + + return true +} + +// Scan the directive name. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^^^^ +// %TAG !yaml! tag:yaml.org,2002: \n +// ^^^ +// +func yaml_parser_scan_directive_name(parser *yaml_parser_t, start_mark yaml_mark_t, name *[]byte) bool { + // Consume the directive name. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + var s []byte + for is_alpha(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the name is empty. + if len(s) == 0 { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "could not find expected directive name") + return false + } + + // Check for an blank character after the name. + if !is_blankz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a directive", + start_mark, "found unexpected non-alphabetical character") + return false + } + *name = s + return true +} + +// Scan the value of VERSION-DIRECTIVE. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^^^^^^ +func yaml_parser_scan_version_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, major, minor *int8) bool { + // Eat whitespaces. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Consume the major version number. + if !yaml_parser_scan_version_directive_number(parser, start_mark, major) { + return false + } + + // Eat '.'. + if parser.buffer[parser.buffer_pos] != '.' { + return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", + start_mark, "did not find expected digit or '.' character") + } + + skip(parser) + + // Consume the minor version number. + if !yaml_parser_scan_version_directive_number(parser, start_mark, minor) { + return false + } + return true +} + +const max_number_length = 2 + +// Scan the version number of VERSION-DIRECTIVE. +// +// Scope: +// %YAML 1.1 # a comment \n +// ^ +// %YAML 1.1 # a comment \n +// ^ +func yaml_parser_scan_version_directive_number(parser *yaml_parser_t, start_mark yaml_mark_t, number *int8) bool { + + // Repeat while the next character is digit. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + var value, length int8 + for is_digit(parser.buffer, parser.buffer_pos) { + // Check if the number is too long. + length++ + if length > max_number_length { + return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", + start_mark, "found extremely long version number") + } + value = value*10 + int8(as_digit(parser.buffer, parser.buffer_pos)) + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the number was present. + if length == 0 { + return yaml_parser_set_scanner_error(parser, "while scanning a %YAML directive", + start_mark, "did not find expected version number") + } + *number = value + return true +} + +// Scan the value of a TAG-DIRECTIVE token. +// +// Scope: +// %TAG !yaml! tag:yaml.org,2002: \n +// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +// +func yaml_parser_scan_tag_directive_value(parser *yaml_parser_t, start_mark yaml_mark_t, handle, prefix *[]byte) bool { + var handle_value, prefix_value []byte + + // Eat whitespaces. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Scan a handle. + if !yaml_parser_scan_tag_handle(parser, true, start_mark, &handle_value) { + return false + } + + // Expect a whitespace. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if !is_blank(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive", + start_mark, "did not find expected whitespace") + return false + } + + // Eat whitespaces. + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Scan a prefix. + if !yaml_parser_scan_tag_uri(parser, true, nil, start_mark, &prefix_value) { + return false + } + + // Expect a whitespace or line break. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if !is_blankz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a %TAG directive", + start_mark, "did not find expected whitespace or line break") + return false + } + + *handle = handle_value + *prefix = prefix_value + return true +} + +func yaml_parser_scan_anchor(parser *yaml_parser_t, token *yaml_token_t, typ yaml_token_type_t) bool { + var s []byte + + // Eat the indicator character. + start_mark := parser.mark + skip(parser) + + // Consume the value. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_alpha(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + end_mark := parser.mark + + /* + * Check if length of the anchor is greater than 0 and it is followed by + * a whitespace character or one of the indicators: + * + * '?', ':', ',', ']', '}', '%', '@', '`'. + */ + + if len(s) == 0 || + !(is_blankz(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == '?' || + parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == ',' || + parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '}' || + parser.buffer[parser.buffer_pos] == '%' || parser.buffer[parser.buffer_pos] == '@' || + parser.buffer[parser.buffer_pos] == '`') { + context := "while scanning an alias" + if typ == yaml_ANCHOR_TOKEN { + context = "while scanning an anchor" + } + yaml_parser_set_scanner_error(parser, context, start_mark, + "did not find expected alphabetic or numeric character") + return false + } + + // Create a token. + *token = yaml_token_t{ + typ: typ, + start_mark: start_mark, + end_mark: end_mark, + value: s, + } + + return true +} + +/* + * Scan a TAG token. + */ + +func yaml_parser_scan_tag(parser *yaml_parser_t, token *yaml_token_t) bool { + var handle, suffix []byte + + start_mark := parser.mark + + // Check if the tag is in the canonical form. + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + if parser.buffer[parser.buffer_pos+1] == '<' { + // Keep the handle as '' + + // Eat '!<' + skip(parser) + skip(parser) + + // Consume the tag value. + if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) { + return false + } + + // Check for '>' and eat it. + if parser.buffer[parser.buffer_pos] != '>' { + yaml_parser_set_scanner_error(parser, "while scanning a tag", + start_mark, "did not find the expected '>'") + return false + } + + skip(parser) + } else { + // The tag has either the '!suffix' or the '!handle!suffix' form. + + // First, try to scan a handle. + if !yaml_parser_scan_tag_handle(parser, false, start_mark, &handle) { + return false + } + + // Check if it is, indeed, handle. + if handle[0] == '!' && len(handle) > 1 && handle[len(handle)-1] == '!' { + // Scan the suffix now. + if !yaml_parser_scan_tag_uri(parser, false, nil, start_mark, &suffix) { + return false + } + } else { + // It wasn't a handle after all. Scan the rest of the tag. + if !yaml_parser_scan_tag_uri(parser, false, handle, start_mark, &suffix) { + return false + } + + // Set the handle to '!'. + handle = []byte{'!'} + + // A special case: the '!' tag. Set the handle to '' and the + // suffix to '!'. + if len(suffix) == 0 { + handle, suffix = suffix, handle + } + } + } + + // Check the character which ends the tag. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if !is_blankz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a tag", + start_mark, "did not find expected whitespace or line break") + return false + } + + end_mark := parser.mark + + // Create a token. + *token = yaml_token_t{ + typ: yaml_TAG_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: handle, + suffix: suffix, + } + return true +} + +// Scan a tag handle. +func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, handle *[]byte) bool { + // Check the initial '!' character. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if parser.buffer[parser.buffer_pos] != '!' { + yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find expected '!'") + return false + } + + var s []byte + + // Copy the '!' character. + s = read(parser, s) + + // Copy all subsequent alphabetical and numerical characters. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for is_alpha(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the trailing character is '!' and copy it. + if parser.buffer[parser.buffer_pos] == '!' { + s = read(parser, s) + } else { + // It's either the '!' tag or not really a tag handle. If it's a %TAG + // directive, it's an error. If it's a tag token, it must be a part of URI. + if directive && !(s[0] == '!' && s[1] == 0) { + yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find expected '!'") + return false + } + } + + *handle = s + return true +} + +// Scan a tag. +func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte, start_mark yaml_mark_t, uri *[]byte) bool { + //size_t length = head ? strlen((char *)head) : 0 + var s []byte + + // Copy the head if needed. + // + // Note that we don't copy the leading '!' character. + if len(head) > 1 { + s = append(s, head[1:]...) + } + + // Scan the tag. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // The set of characters that may appear in URI is as follows: + // + // '0'-'9', 'A'-'Z', 'a'-'z', '_', '-', ';', '/', '?', ':', '@', '&', + // '=', '+', '$', ',', '.', '!', '~', '*', '\'', '(', ')', '[', ']', + // '%'. + // [Go] Convert this into more reasonable logic. + for is_alpha(parser.buffer, parser.buffer_pos) || parser.buffer[parser.buffer_pos] == ';' || + parser.buffer[parser.buffer_pos] == '/' || parser.buffer[parser.buffer_pos] == '?' || + parser.buffer[parser.buffer_pos] == ':' || parser.buffer[parser.buffer_pos] == '@' || + parser.buffer[parser.buffer_pos] == '&' || parser.buffer[parser.buffer_pos] == '=' || + parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '$' || + parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == '.' || + parser.buffer[parser.buffer_pos] == '!' || parser.buffer[parser.buffer_pos] == '~' || + parser.buffer[parser.buffer_pos] == '*' || parser.buffer[parser.buffer_pos] == '\'' || + parser.buffer[parser.buffer_pos] == '(' || parser.buffer[parser.buffer_pos] == ')' || + parser.buffer[parser.buffer_pos] == '[' || parser.buffer[parser.buffer_pos] == ']' || + parser.buffer[parser.buffer_pos] == '%' { + // Check if it is a URI-escape sequence. + if parser.buffer[parser.buffer_pos] == '%' { + if !yaml_parser_scan_uri_escapes(parser, directive, start_mark, &s) { + return false + } + } else { + s = read(parser, s) + } + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check if the tag is non-empty. + if len(s) == 0 { + yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find expected tag URI") + return false + } + *uri = s + return true +} + +// Decode an URI-escape sequence corresponding to a single UTF-8 character. +func yaml_parser_scan_uri_escapes(parser *yaml_parser_t, directive bool, start_mark yaml_mark_t, s *[]byte) bool { + + // Decode the required number of characters. + w := 1024 + for w > 0 { + // Check for a URI-escaped octet. + if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) { + return false + } + + if !(parser.buffer[parser.buffer_pos] == '%' && + is_hex(parser.buffer, parser.buffer_pos+1) && + is_hex(parser.buffer, parser.buffer_pos+2)) { + return yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "did not find URI escaped octet") + } + + // Get the octet. + octet := byte((as_hex(parser.buffer, parser.buffer_pos+1) << 4) + as_hex(parser.buffer, parser.buffer_pos+2)) + + // If it is the leading octet, determine the length of the UTF-8 sequence. + if w == 1024 { + w = width(octet) + if w == 0 { + return yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "found an incorrect leading UTF-8 octet") + } + } else { + // Check if the trailing octet is correct. + if octet&0xC0 != 0x80 { + return yaml_parser_set_scanner_tag_error(parser, directive, + start_mark, "found an incorrect trailing UTF-8 octet") + } + } + + // Copy the octet and move the pointers. + *s = append(*s, octet) + skip(parser) + skip(parser) + skip(parser) + w-- + } + return true +} + +// Scan a block scalar. +func yaml_parser_scan_block_scalar(parser *yaml_parser_t, token *yaml_token_t, literal bool) bool { + // Eat the indicator '|' or '>'. + start_mark := parser.mark + skip(parser) + + // Scan the additional block scalar indicators. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + // Check for a chomping indicator. + var chomping, increment int + if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' { + // Set the chomping method and eat the indicator. + if parser.buffer[parser.buffer_pos] == '+' { + chomping = +1 + } else { + chomping = -1 + } + skip(parser) + + // Check for an indentation indicator. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if is_digit(parser.buffer, parser.buffer_pos) { + // Check that the indentation is greater than 0. + if parser.buffer[parser.buffer_pos] == '0' { + yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "found an indentation indicator equal to 0") + return false + } + + // Get the indentation level and eat the indicator. + increment = as_digit(parser.buffer, parser.buffer_pos) + skip(parser) + } + + } else if is_digit(parser.buffer, parser.buffer_pos) { + // Do the same as above, but in the opposite order. + + if parser.buffer[parser.buffer_pos] == '0' { + yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "found an indentation indicator equal to 0") + return false + } + increment = as_digit(parser.buffer, parser.buffer_pos) + skip(parser) + + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + if parser.buffer[parser.buffer_pos] == '+' || parser.buffer[parser.buffer_pos] == '-' { + if parser.buffer[parser.buffer_pos] == '+' { + chomping = +1 + } else { + chomping = -1 + } + skip(parser) + } + } + + // Eat whitespaces and comments to the end of the line. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for is_blank(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + if parser.buffer[parser.buffer_pos] == '#' { + for !is_breakz(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + } + + // Check if we are at the end of the line. + if !is_breakz(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "did not find expected comment or line break") + return false + } + + // Eat a line break. + if is_break(parser.buffer, parser.buffer_pos) { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + skip_line(parser) + } + + end_mark := parser.mark + + // Set the indentation level if it was specified. + var indent int + if increment > 0 { + if parser.indent >= 0 { + indent = parser.indent + increment + } else { + indent = increment + } + } + + // Scan the leading line breaks and determine the indentation level if needed. + var s, leading_break, trailing_breaks []byte + if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) { + return false + } + + // Scan the block scalar content. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + var leading_blank, trailing_blank bool + for parser.mark.column == indent && !is_z(parser.buffer, parser.buffer_pos) { + // We are at the beginning of a non-empty line. + + // Is it a trailing whitespace? + trailing_blank = is_blank(parser.buffer, parser.buffer_pos) + + // Check if we need to fold the leading line break. + if !literal && !leading_blank && !trailing_blank && len(leading_break) > 0 && leading_break[0] == '\n' { + // Do we need to join the lines by space? + if len(trailing_breaks) == 0 { + s = append(s, ' ') + } + } else { + s = append(s, leading_break...) + } + leading_break = leading_break[:0] + + // Append the remaining line breaks. + s = append(s, trailing_breaks...) + trailing_breaks = trailing_breaks[:0] + + // Is it a leading whitespace? + leading_blank = is_blank(parser.buffer, parser.buffer_pos) + + // Consume the current line. + for !is_breakz(parser.buffer, parser.buffer_pos) { + s = read(parser, s) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Consume the line break. + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + leading_break = read_line(parser, leading_break) + + // Eat the following indentation spaces and line breaks. + if !yaml_parser_scan_block_scalar_breaks(parser, &indent, &trailing_breaks, start_mark, &end_mark) { + return false + } + } + + // Chomp the tail. + if chomping != -1 { + s = append(s, leading_break...) + } + if chomping == 1 { + s = append(s, trailing_breaks...) + } + + // Create a token. + *token = yaml_token_t{ + typ: yaml_SCALAR_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: s, + style: yaml_LITERAL_SCALAR_STYLE, + } + if !literal { + token.style = yaml_FOLDED_SCALAR_STYLE + } + return true +} + +// Scan indentation spaces and line breaks for a block scalar. Determine the +// indentation level if needed. +func yaml_parser_scan_block_scalar_breaks(parser *yaml_parser_t, indent *int, breaks *[]byte, start_mark yaml_mark_t, end_mark *yaml_mark_t) bool { + *end_mark = parser.mark + + // Eat the indentation spaces and line breaks. + max_indent := 0 + for { + // Eat the indentation spaces. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + for (*indent == 0 || parser.mark.column < *indent) && is_space(parser.buffer, parser.buffer_pos) { + skip(parser) + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + if parser.mark.column > max_indent { + max_indent = parser.mark.column + } + + // Check for a tab character messing the indentation. + if (*indent == 0 || parser.mark.column < *indent) && is_tab(parser.buffer, parser.buffer_pos) { + return yaml_parser_set_scanner_error(parser, "while scanning a block scalar", + start_mark, "found a tab character where an indentation space is expected") + } + + // Have we found a non-empty line? + if !is_break(parser.buffer, parser.buffer_pos) { + break + } + + // Consume the line break. + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + // [Go] Should really be returning breaks instead. + *breaks = read_line(parser, *breaks) + *end_mark = parser.mark + } + + // Determine the indentation level if needed. + if *indent == 0 { + *indent = max_indent + if *indent < parser.indent+1 { + *indent = parser.indent + 1 + } + if *indent < 1 { + *indent = 1 + } + } + return true +} + +// Scan a quoted scalar. +func yaml_parser_scan_flow_scalar(parser *yaml_parser_t, token *yaml_token_t, single bool) bool { + // Eat the left quote. + start_mark := parser.mark + skip(parser) + + // Consume the content of the quoted scalar. + var s, leading_break, trailing_breaks, whitespaces []byte + for { + // Check that there are no document indicators at the beginning of the line. + if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) { + return false + } + + if parser.mark.column == 0 && + ((parser.buffer[parser.buffer_pos+0] == '-' && + parser.buffer[parser.buffer_pos+1] == '-' && + parser.buffer[parser.buffer_pos+2] == '-') || + (parser.buffer[parser.buffer_pos+0] == '.' && + parser.buffer[parser.buffer_pos+1] == '.' && + parser.buffer[parser.buffer_pos+2] == '.')) && + is_blankz(parser.buffer, parser.buffer_pos+3) { + yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar", + start_mark, "found unexpected document indicator") + return false + } + + // Check for EOF. + if is_z(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a quoted scalar", + start_mark, "found unexpected end of stream") + return false + } + + // Consume non-blank characters. + leading_blanks := false + for !is_blankz(parser.buffer, parser.buffer_pos) { + if single && parser.buffer[parser.buffer_pos] == '\'' && parser.buffer[parser.buffer_pos+1] == '\'' { + // Is is an escaped single quote. + s = append(s, '\'') + skip(parser) + skip(parser) + + } else if single && parser.buffer[parser.buffer_pos] == '\'' { + // It is a right single quote. + break + } else if !single && parser.buffer[parser.buffer_pos] == '"' { + // It is a right double quote. + break + + } else if !single && parser.buffer[parser.buffer_pos] == '\\' && is_break(parser.buffer, parser.buffer_pos+1) { + // It is an escaped line break. + if parser.unread < 3 && !yaml_parser_update_buffer(parser, 3) { + return false + } + skip(parser) + skip_line(parser) + leading_blanks = true + break + + } else if !single && parser.buffer[parser.buffer_pos] == '\\' { + // It is an escape sequence. + code_length := 0 + + // Check the escape character. + switch parser.buffer[parser.buffer_pos+1] { + case '0': + s = append(s, 0) + case 'a': + s = append(s, '\x07') + case 'b': + s = append(s, '\x08') + case 't', '\t': + s = append(s, '\x09') + case 'n': + s = append(s, '\x0A') + case 'v': + s = append(s, '\x0B') + case 'f': + s = append(s, '\x0C') + case 'r': + s = append(s, '\x0D') + case 'e': + s = append(s, '\x1B') + case ' ': + s = append(s, '\x20') + case '"': + s = append(s, '"') + case '\'': + s = append(s, '\'') + case '\\': + s = append(s, '\\') + case 'N': // NEL (#x85) + s = append(s, '\xC2') + s = append(s, '\x85') + case '_': // #xA0 + s = append(s, '\xC2') + s = append(s, '\xA0') + case 'L': // LS (#x2028) + s = append(s, '\xE2') + s = append(s, '\x80') + s = append(s, '\xA8') + case 'P': // PS (#x2029) + s = append(s, '\xE2') + s = append(s, '\x80') + s = append(s, '\xA9') + case 'x': + code_length = 2 + case 'u': + code_length = 4 + case 'U': + code_length = 8 + default: + yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", + start_mark, "found unknown escape character") + return false + } + + skip(parser) + skip(parser) + + // Consume an arbitrary escape code. + if code_length > 0 { + var value int + + // Scan the character value. + if parser.unread < code_length && !yaml_parser_update_buffer(parser, code_length) { + return false + } + for k := 0; k < code_length; k++ { + if !is_hex(parser.buffer, parser.buffer_pos+k) { + yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", + start_mark, "did not find expected hexdecimal number") + return false + } + value = (value << 4) + as_hex(parser.buffer, parser.buffer_pos+k) + } + + // Check the value and write the character. + if (value >= 0xD800 && value <= 0xDFFF) || value > 0x10FFFF { + yaml_parser_set_scanner_error(parser, "while parsing a quoted scalar", + start_mark, "found invalid Unicode character escape code") + return false + } + if value <= 0x7F { + s = append(s, byte(value)) + } else if value <= 0x7FF { + s = append(s, byte(0xC0+(value>>6))) + s = append(s, byte(0x80+(value&0x3F))) + } else if value <= 0xFFFF { + s = append(s, byte(0xE0+(value>>12))) + s = append(s, byte(0x80+((value>>6)&0x3F))) + s = append(s, byte(0x80+(value&0x3F))) + } else { + s = append(s, byte(0xF0+(value>>18))) + s = append(s, byte(0x80+((value>>12)&0x3F))) + s = append(s, byte(0x80+((value>>6)&0x3F))) + s = append(s, byte(0x80+(value&0x3F))) + } + + // Advance the pointer. + for k := 0; k < code_length; k++ { + skip(parser) + } + } + } else { + // It is a non-escaped non-blank character. + s = read(parser, s) + } + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + } + + // Check if we are at the end of the scalar. + if single { + if parser.buffer[parser.buffer_pos] == '\'' { + break + } + } else { + if parser.buffer[parser.buffer_pos] == '"' { + break + } + } + + // Consume blank characters. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) { + if is_blank(parser.buffer, parser.buffer_pos) { + // Consume a space or a tab character. + if !leading_blanks { + whitespaces = read(parser, whitespaces) + } else { + skip(parser) + } + } else { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + // Check if it is a first line break. + if !leading_blanks { + whitespaces = whitespaces[:0] + leading_break = read_line(parser, leading_break) + leading_blanks = true + } else { + trailing_breaks = read_line(parser, trailing_breaks) + } + } + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Join the whitespaces or fold line breaks. + if leading_blanks { + // Do we need to fold line breaks? + if len(leading_break) > 0 && leading_break[0] == '\n' { + if len(trailing_breaks) == 0 { + s = append(s, ' ') + } else { + s = append(s, trailing_breaks...) + } + } else { + s = append(s, leading_break...) + s = append(s, trailing_breaks...) + } + trailing_breaks = trailing_breaks[:0] + leading_break = leading_break[:0] + } else { + s = append(s, whitespaces...) + whitespaces = whitespaces[:0] + } + } + + // Eat the right quote. + skip(parser) + end_mark := parser.mark + + // Create a token. + *token = yaml_token_t{ + typ: yaml_SCALAR_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: s, + style: yaml_SINGLE_QUOTED_SCALAR_STYLE, + } + if !single { + token.style = yaml_DOUBLE_QUOTED_SCALAR_STYLE + } + return true +} + +// Scan a plain scalar. +func yaml_parser_scan_plain_scalar(parser *yaml_parser_t, token *yaml_token_t) bool { + + var s, leading_break, trailing_breaks, whitespaces []byte + var leading_blanks bool + var indent = parser.indent + 1 + + start_mark := parser.mark + end_mark := parser.mark + + // Consume the content of the plain scalar. + for { + // Check for a document indicator. + if parser.unread < 4 && !yaml_parser_update_buffer(parser, 4) { + return false + } + if parser.mark.column == 0 && + ((parser.buffer[parser.buffer_pos+0] == '-' && + parser.buffer[parser.buffer_pos+1] == '-' && + parser.buffer[parser.buffer_pos+2] == '-') || + (parser.buffer[parser.buffer_pos+0] == '.' && + parser.buffer[parser.buffer_pos+1] == '.' && + parser.buffer[parser.buffer_pos+2] == '.')) && + is_blankz(parser.buffer, parser.buffer_pos+3) { + break + } + + // Check for a comment. + if parser.buffer[parser.buffer_pos] == '#' { + break + } + + // Consume non-blank characters. + for !is_blankz(parser.buffer, parser.buffer_pos) { + + // Check for 'x:x' in the flow context. TODO: Fix the test "spec-08-13". + if parser.flow_level > 0 && + parser.buffer[parser.buffer_pos] == ':' && + !is_blankz(parser.buffer, parser.buffer_pos+1) { + yaml_parser_set_scanner_error(parser, "while scanning a plain scalar", + start_mark, "found unexpected ':'") + return false + } + + // Check for indicators that may end a plain scalar. + if (parser.buffer[parser.buffer_pos] == ':' && is_blankz(parser.buffer, parser.buffer_pos+1)) || + (parser.flow_level > 0 && + (parser.buffer[parser.buffer_pos] == ',' || parser.buffer[parser.buffer_pos] == ':' || + parser.buffer[parser.buffer_pos] == '?' || parser.buffer[parser.buffer_pos] == '[' || + parser.buffer[parser.buffer_pos] == ']' || parser.buffer[parser.buffer_pos] == '{' || + parser.buffer[parser.buffer_pos] == '}')) { + break + } + + // Check if we need to join whitespaces and breaks. + if leading_blanks || len(whitespaces) > 0 { + if leading_blanks { + // Do we need to fold line breaks? + if leading_break[0] == '\n' { + if len(trailing_breaks) == 0 { + s = append(s, ' ') + } else { + s = append(s, trailing_breaks...) + } + } else { + s = append(s, leading_break...) + s = append(s, trailing_breaks...) + } + trailing_breaks = trailing_breaks[:0] + leading_break = leading_break[:0] + leading_blanks = false + } else { + s = append(s, whitespaces...) + whitespaces = whitespaces[:0] + } + } + + // Copy the character. + s = read(parser, s) + + end_mark = parser.mark + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + } + + // Is it the end? + if !(is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos)) { + break + } + + // Consume blank characters. + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + + for is_blank(parser.buffer, parser.buffer_pos) || is_break(parser.buffer, parser.buffer_pos) { + if is_blank(parser.buffer, parser.buffer_pos) { + + // Check for tab character that abuse indentation. + if leading_blanks && parser.mark.column < indent && is_tab(parser.buffer, parser.buffer_pos) { + yaml_parser_set_scanner_error(parser, "while scanning a plain scalar", + start_mark, "found a tab character that violate indentation") + return false + } + + // Consume a space or a tab character. + if !leading_blanks { + whitespaces = read(parser, whitespaces) + } else { + skip(parser) + } + } else { + if parser.unread < 2 && !yaml_parser_update_buffer(parser, 2) { + return false + } + + // Check if it is a first line break. + if !leading_blanks { + whitespaces = whitespaces[:0] + leading_break = read_line(parser, leading_break) + leading_blanks = true + } else { + trailing_breaks = read_line(parser, trailing_breaks) + } + } + if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) { + return false + } + } + + // Check indentation level. + if parser.flow_level == 0 && parser.mark.column < indent { + break + } + } + + // Create a token. + *token = yaml_token_t{ + typ: yaml_SCALAR_TOKEN, + start_mark: start_mark, + end_mark: end_mark, + value: s, + style: yaml_PLAIN_SCALAR_STYLE, + } + + // Note that we change the 'simple_key_allowed' flag. + if leading_blanks { + parser.simple_key_allowed = true + } + return true +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/sorter.go b/components/engine/vendor/gopkg.in/yaml.v2/sorter.go new file mode 100644 index 0000000000..5958822f9c --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/sorter.go @@ -0,0 +1,104 @@ +package yaml + +import ( + "reflect" + "unicode" +) + +type keyList []reflect.Value + +func (l keyList) Len() int { return len(l) } +func (l keyList) Swap(i, j int) { l[i], l[j] = l[j], l[i] } +func (l keyList) Less(i, j int) bool { + a := l[i] + b := l[j] + ak := a.Kind() + bk := b.Kind() + for (ak == reflect.Interface || ak == reflect.Ptr) && !a.IsNil() { + a = a.Elem() + ak = a.Kind() + } + for (bk == reflect.Interface || bk == reflect.Ptr) && !b.IsNil() { + b = b.Elem() + bk = b.Kind() + } + af, aok := keyFloat(a) + bf, bok := keyFloat(b) + if aok && bok { + if af != bf { + return af < bf + } + if ak != bk { + return ak < bk + } + return numLess(a, b) + } + if ak != reflect.String || bk != reflect.String { + return ak < bk + } + ar, br := []rune(a.String()), []rune(b.String()) + for i := 0; i < len(ar) && i < len(br); i++ { + if ar[i] == br[i] { + continue + } + al := unicode.IsLetter(ar[i]) + bl := unicode.IsLetter(br[i]) + if al && bl { + return ar[i] < br[i] + } + if al || bl { + return bl + } + var ai, bi int + var an, bn int64 + for ai = i; ai < len(ar) && unicode.IsDigit(ar[ai]); ai++ { + an = an*10 + int64(ar[ai]-'0') + } + for bi = i; bi < len(br) && unicode.IsDigit(br[bi]); bi++ { + bn = bn*10 + int64(br[bi]-'0') + } + if an != bn { + return an < bn + } + if ai != bi { + return ai < bi + } + return ar[i] < br[i] + } + return len(ar) < len(br) +} + +// keyFloat returns a float value for v if it is a number/bool +// and whether it is a number/bool or not. +func keyFloat(v reflect.Value) (f float64, ok bool) { + switch v.Kind() { + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return float64(v.Int()), true + case reflect.Float32, reflect.Float64: + return v.Float(), true + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + return float64(v.Uint()), true + case reflect.Bool: + if v.Bool() { + return 1, true + } + return 0, true + } + return 0, false +} + +// numLess returns whether a < b. +// a and b must necessarily have the same kind. +func numLess(a, b reflect.Value) bool { + switch a.Kind() { + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return a.Int() < b.Int() + case reflect.Float32, reflect.Float64: + return a.Float() < b.Float() + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + return a.Uint() < b.Uint() + case reflect.Bool: + return !a.Bool() && b.Bool() + } + panic("not a number") +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/writerc.go b/components/engine/vendor/gopkg.in/yaml.v2/writerc.go new file mode 100644 index 0000000000..190362f25d --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/writerc.go @@ -0,0 +1,89 @@ +package yaml + +// Set the writer error and return false. +func yaml_emitter_set_writer_error(emitter *yaml_emitter_t, problem string) bool { + emitter.error = yaml_WRITER_ERROR + emitter.problem = problem + return false +} + +// Flush the output buffer. +func yaml_emitter_flush(emitter *yaml_emitter_t) bool { + if emitter.write_handler == nil { + panic("write handler not set") + } + + // Check if the buffer is empty. + if emitter.buffer_pos == 0 { + return true + } + + // If the output encoding is UTF-8, we don't need to recode the buffer. + if emitter.encoding == yaml_UTF8_ENCODING { + if err := emitter.write_handler(emitter, emitter.buffer[:emitter.buffer_pos]); err != nil { + return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error()) + } + emitter.buffer_pos = 0 + return true + } + + // Recode the buffer into the raw buffer. + var low, high int + if emitter.encoding == yaml_UTF16LE_ENCODING { + low, high = 0, 1 + } else { + high, low = 1, 0 + } + + pos := 0 + for pos < emitter.buffer_pos { + // See the "reader.c" code for more details on UTF-8 encoding. Note + // that we assume that the buffer contains a valid UTF-8 sequence. + + // Read the next UTF-8 character. + octet := emitter.buffer[pos] + + var w int + var value rune + switch { + case octet&0x80 == 0x00: + w, value = 1, rune(octet&0x7F) + case octet&0xE0 == 0xC0: + w, value = 2, rune(octet&0x1F) + case octet&0xF0 == 0xE0: + w, value = 3, rune(octet&0x0F) + case octet&0xF8 == 0xF0: + w, value = 4, rune(octet&0x07) + } + for k := 1; k < w; k++ { + octet = emitter.buffer[pos+k] + value = (value << 6) + (rune(octet) & 0x3F) + } + pos += w + + // Write the character. + if value < 0x10000 { + var b [2]byte + b[high] = byte(value >> 8) + b[low] = byte(value & 0xFF) + emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1]) + } else { + // Write the character using a surrogate pair (check "reader.c"). + var b [4]byte + value -= 0x10000 + b[high] = byte(0xD8 + (value >> 18)) + b[low] = byte((value >> 10) & 0xFF) + b[high+2] = byte(0xDC + ((value >> 8) & 0xFF)) + b[low+2] = byte(value & 0xFF) + emitter.raw_buffer = append(emitter.raw_buffer, b[0], b[1], b[2], b[3]) + } + } + + // Write the raw buffer. + if err := emitter.write_handler(emitter, emitter.raw_buffer); err != nil { + return yaml_emitter_set_writer_error(emitter, "write error: "+err.Error()) + } + emitter.buffer_pos = 0 + emitter.raw_buffer = emitter.raw_buffer[:0] + return true +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/yaml.go b/components/engine/vendor/gopkg.in/yaml.v2/yaml.go new file mode 100644 index 0000000000..36d6b883a6 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/yaml.go @@ -0,0 +1,346 @@ +// Package yaml implements YAML support for the Go language. +// +// Source code and other details for the project are available at GitHub: +// +// https://github.com/go-yaml/yaml +// +package yaml + +import ( + "errors" + "fmt" + "reflect" + "strings" + "sync" +) + +// MapSlice encodes and decodes as a YAML map. +// The order of keys is preserved when encoding and decoding. +type MapSlice []MapItem + +// MapItem is an item in a MapSlice. +type MapItem struct { + Key, Value interface{} +} + +// The Unmarshaler interface may be implemented by types to customize their +// behavior when being unmarshaled from a YAML document. The UnmarshalYAML +// method receives a function that may be called to unmarshal the original +// YAML value into a field or variable. It is safe to call the unmarshal +// function parameter more than once if necessary. +type Unmarshaler interface { + UnmarshalYAML(unmarshal func(interface{}) error) error +} + +// The Marshaler interface may be implemented by types to customize their +// behavior when being marshaled into a YAML document. The returned value +// is marshaled in place of the original value implementing Marshaler. +// +// If an error is returned by MarshalYAML, the marshaling procedure stops +// and returns with the provided error. +type Marshaler interface { + MarshalYAML() (interface{}, error) +} + +// Unmarshal decodes the first document found within the in byte slice +// and assigns decoded values into the out value. +// +// Maps and pointers (to a struct, string, int, etc) are accepted as out +// values. If an internal pointer within a struct is not initialized, +// the yaml package will initialize it if necessary for unmarshalling +// the provided data. The out parameter must not be nil. +// +// The type of the decoded values should be compatible with the respective +// values in out. If one or more values cannot be decoded due to a type +// mismatches, decoding continues partially until the end of the YAML +// content, and a *yaml.TypeError is returned with details for all +// missed values. +// +// Struct fields are only unmarshalled if they are exported (have an +// upper case first letter), and are unmarshalled using the field name +// lowercased as the default key. Custom keys may be defined via the +// "yaml" name in the field tag: the content preceding the first comma +// is used as the key, and the following comma-separated options are +// used to tweak the marshalling process (see Marshal). +// Conflicting names result in a runtime error. +// +// For example: +// +// type T struct { +// F int `yaml:"a,omitempty"` +// B int +// } +// var t T +// yaml.Unmarshal([]byte("a: 1\nb: 2"), &t) +// +// See the documentation of Marshal for the format of tags and a list of +// supported tag options. +// +func Unmarshal(in []byte, out interface{}) (err error) { + defer handleErr(&err) + d := newDecoder() + p := newParser(in) + defer p.destroy() + node := p.parse() + if node != nil { + v := reflect.ValueOf(out) + if v.Kind() == reflect.Ptr && !v.IsNil() { + v = v.Elem() + } + d.unmarshal(node, v) + } + if len(d.terrors) > 0 { + return &TypeError{d.terrors} + } + return nil +} + +// Marshal serializes the value provided into a YAML document. The structure +// of the generated document will reflect the structure of the value itself. +// Maps and pointers (to struct, string, int, etc) are accepted as the in value. +// +// Struct fields are only unmarshalled if they are exported (have an upper case +// first letter), and are unmarshalled using the field name lowercased as the +// default key. Custom keys may be defined via the "yaml" name in the field +// tag: the content preceding the first comma is used as the key, and the +// following comma-separated options are used to tweak the marshalling process. +// Conflicting names result in a runtime error. +// +// The field tag format accepted is: +// +// `(...) yaml:"[][,[,]]" (...)` +// +// The following flags are currently supported: +// +// omitempty Only include the field if it's not set to the zero +// value for the type or to empty slices or maps. +// Does not apply to zero valued structs. +// +// flow Marshal using a flow style (useful for structs, +// sequences and maps). +// +// inline Inline the field, which must be a struct or a map, +// causing all of its fields or keys to be processed as if +// they were part of the outer struct. For maps, keys must +// not conflict with the yaml keys of other struct fields. +// +// In addition, if the key is "-", the field is ignored. +// +// For example: +// +// type T struct { +// F int "a,omitempty" +// B int +// } +// yaml.Marshal(&T{B: 2}) // Returns "b: 2\n" +// yaml.Marshal(&T{F: 1}} // Returns "a: 1\nb: 0\n" +// +func Marshal(in interface{}) (out []byte, err error) { + defer handleErr(&err) + e := newEncoder() + defer e.destroy() + e.marshal("", reflect.ValueOf(in)) + e.finish() + out = e.out + return +} + +func handleErr(err *error) { + if v := recover(); v != nil { + if e, ok := v.(yamlError); ok { + *err = e.err + } else { + panic(v) + } + } +} + +type yamlError struct { + err error +} + +func fail(err error) { + panic(yamlError{err}) +} + +func failf(format string, args ...interface{}) { + panic(yamlError{fmt.Errorf("yaml: "+format, args...)}) +} + +// A TypeError is returned by Unmarshal when one or more fields in +// the YAML document cannot be properly decoded into the requested +// types. When this error is returned, the value is still +// unmarshaled partially. +type TypeError struct { + Errors []string +} + +func (e *TypeError) Error() string { + return fmt.Sprintf("yaml: unmarshal errors:\n %s", strings.Join(e.Errors, "\n ")) +} + +// -------------------------------------------------------------------------- +// Maintain a mapping of keys to structure field indexes + +// The code in this section was copied from mgo/bson. + +// structInfo holds details for the serialization of fields of +// a given struct. +type structInfo struct { + FieldsMap map[string]fieldInfo + FieldsList []fieldInfo + + // InlineMap is the number of the field in the struct that + // contains an ,inline map, or -1 if there's none. + InlineMap int +} + +type fieldInfo struct { + Key string + Num int + OmitEmpty bool + Flow bool + + // Inline holds the field index if the field is part of an inlined struct. + Inline []int +} + +var structMap = make(map[reflect.Type]*structInfo) +var fieldMapMutex sync.RWMutex + +func getStructInfo(st reflect.Type) (*structInfo, error) { + fieldMapMutex.RLock() + sinfo, found := structMap[st] + fieldMapMutex.RUnlock() + if found { + return sinfo, nil + } + + n := st.NumField() + fieldsMap := make(map[string]fieldInfo) + fieldsList := make([]fieldInfo, 0, n) + inlineMap := -1 + for i := 0; i != n; i++ { + field := st.Field(i) + if field.PkgPath != "" && !field.Anonymous { + continue // Private field + } + + info := fieldInfo{Num: i} + + tag := field.Tag.Get("yaml") + if tag == "" && strings.Index(string(field.Tag), ":") < 0 { + tag = string(field.Tag) + } + if tag == "-" { + continue + } + + inline := false + fields := strings.Split(tag, ",") + if len(fields) > 1 { + for _, flag := range fields[1:] { + switch flag { + case "omitempty": + info.OmitEmpty = true + case "flow": + info.Flow = true + case "inline": + inline = true + default: + return nil, errors.New(fmt.Sprintf("Unsupported flag %q in tag %q of type %s", flag, tag, st)) + } + } + tag = fields[0] + } + + if inline { + switch field.Type.Kind() { + case reflect.Map: + if inlineMap >= 0 { + return nil, errors.New("Multiple ,inline maps in struct " + st.String()) + } + if field.Type.Key() != reflect.TypeOf("") { + return nil, errors.New("Option ,inline needs a map with string keys in struct " + st.String()) + } + inlineMap = info.Num + case reflect.Struct: + sinfo, err := getStructInfo(field.Type) + if err != nil { + return nil, err + } + for _, finfo := range sinfo.FieldsList { + if _, found := fieldsMap[finfo.Key]; found { + msg := "Duplicated key '" + finfo.Key + "' in struct " + st.String() + return nil, errors.New(msg) + } + if finfo.Inline == nil { + finfo.Inline = []int{i, finfo.Num} + } else { + finfo.Inline = append([]int{i}, finfo.Inline...) + } + fieldsMap[finfo.Key] = finfo + fieldsList = append(fieldsList, finfo) + } + default: + //return nil, errors.New("Option ,inline needs a struct value or map field") + return nil, errors.New("Option ,inline needs a struct value field") + } + continue + } + + if tag != "" { + info.Key = tag + } else { + info.Key = strings.ToLower(field.Name) + } + + if _, found = fieldsMap[info.Key]; found { + msg := "Duplicated key '" + info.Key + "' in struct " + st.String() + return nil, errors.New(msg) + } + + fieldsList = append(fieldsList, info) + fieldsMap[info.Key] = info + } + + sinfo = &structInfo{fieldsMap, fieldsList, inlineMap} + + fieldMapMutex.Lock() + structMap[st] = sinfo + fieldMapMutex.Unlock() + return sinfo, nil +} + +func isZero(v reflect.Value) bool { + switch v.Kind() { + case reflect.String: + return len(v.String()) == 0 + case reflect.Interface, reflect.Ptr: + return v.IsNil() + case reflect.Slice: + return v.Len() == 0 + case reflect.Map: + return v.Len() == 0 + case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: + return v.Int() == 0 + case reflect.Float32, reflect.Float64: + return v.Float() == 0 + case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr: + return v.Uint() == 0 + case reflect.Bool: + return !v.Bool() + case reflect.Struct: + vt := v.Type() + for i := v.NumField() - 1; i >= 0; i-- { + if vt.Field(i).PkgPath != "" { + continue // Private field + } + if !isZero(v.Field(i)) { + return false + } + } + return true + } + return false +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/yamlh.go b/components/engine/vendor/gopkg.in/yaml.v2/yamlh.go new file mode 100644 index 0000000000..d60a6b6b00 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/yamlh.go @@ -0,0 +1,716 @@ +package yaml + +import ( + "io" +) + +// The version directive data. +type yaml_version_directive_t struct { + major int8 // The major version number. + minor int8 // The minor version number. +} + +// The tag directive data. +type yaml_tag_directive_t struct { + handle []byte // The tag handle. + prefix []byte // The tag prefix. +} + +type yaml_encoding_t int + +// The stream encoding. +const ( + // Let the parser choose the encoding. + yaml_ANY_ENCODING yaml_encoding_t = iota + + yaml_UTF8_ENCODING // The default UTF-8 encoding. + yaml_UTF16LE_ENCODING // The UTF-16-LE encoding with BOM. + yaml_UTF16BE_ENCODING // The UTF-16-BE encoding with BOM. +) + +type yaml_break_t int + +// Line break types. +const ( + // Let the parser choose the break type. + yaml_ANY_BREAK yaml_break_t = iota + + yaml_CR_BREAK // Use CR for line breaks (Mac style). + yaml_LN_BREAK // Use LN for line breaks (Unix style). + yaml_CRLN_BREAK // Use CR LN for line breaks (DOS style). +) + +type yaml_error_type_t int + +// Many bad things could happen with the parser and emitter. +const ( + // No error is produced. + yaml_NO_ERROR yaml_error_type_t = iota + + yaml_MEMORY_ERROR // Cannot allocate or reallocate a block of memory. + yaml_READER_ERROR // Cannot read or decode the input stream. + yaml_SCANNER_ERROR // Cannot scan the input stream. + yaml_PARSER_ERROR // Cannot parse the input stream. + yaml_COMPOSER_ERROR // Cannot compose a YAML document. + yaml_WRITER_ERROR // Cannot write to the output stream. + yaml_EMITTER_ERROR // Cannot emit a YAML stream. +) + +// The pointer position. +type yaml_mark_t struct { + index int // The position index. + line int // The position line. + column int // The position column. +} + +// Node Styles + +type yaml_style_t int8 + +type yaml_scalar_style_t yaml_style_t + +// Scalar styles. +const ( + // Let the emitter choose the style. + yaml_ANY_SCALAR_STYLE yaml_scalar_style_t = iota + + yaml_PLAIN_SCALAR_STYLE // The plain scalar style. + yaml_SINGLE_QUOTED_SCALAR_STYLE // The single-quoted scalar style. + yaml_DOUBLE_QUOTED_SCALAR_STYLE // The double-quoted scalar style. + yaml_LITERAL_SCALAR_STYLE // The literal scalar style. + yaml_FOLDED_SCALAR_STYLE // The folded scalar style. +) + +type yaml_sequence_style_t yaml_style_t + +// Sequence styles. +const ( + // Let the emitter choose the style. + yaml_ANY_SEQUENCE_STYLE yaml_sequence_style_t = iota + + yaml_BLOCK_SEQUENCE_STYLE // The block sequence style. + yaml_FLOW_SEQUENCE_STYLE // The flow sequence style. +) + +type yaml_mapping_style_t yaml_style_t + +// Mapping styles. +const ( + // Let the emitter choose the style. + yaml_ANY_MAPPING_STYLE yaml_mapping_style_t = iota + + yaml_BLOCK_MAPPING_STYLE // The block mapping style. + yaml_FLOW_MAPPING_STYLE // The flow mapping style. +) + +// Tokens + +type yaml_token_type_t int + +// Token types. +const ( + // An empty token. + yaml_NO_TOKEN yaml_token_type_t = iota + + yaml_STREAM_START_TOKEN // A STREAM-START token. + yaml_STREAM_END_TOKEN // A STREAM-END token. + + yaml_VERSION_DIRECTIVE_TOKEN // A VERSION-DIRECTIVE token. + yaml_TAG_DIRECTIVE_TOKEN // A TAG-DIRECTIVE token. + yaml_DOCUMENT_START_TOKEN // A DOCUMENT-START token. + yaml_DOCUMENT_END_TOKEN // A DOCUMENT-END token. + + yaml_BLOCK_SEQUENCE_START_TOKEN // A BLOCK-SEQUENCE-START token. + yaml_BLOCK_MAPPING_START_TOKEN // A BLOCK-SEQUENCE-END token. + yaml_BLOCK_END_TOKEN // A BLOCK-END token. + + yaml_FLOW_SEQUENCE_START_TOKEN // A FLOW-SEQUENCE-START token. + yaml_FLOW_SEQUENCE_END_TOKEN // A FLOW-SEQUENCE-END token. + yaml_FLOW_MAPPING_START_TOKEN // A FLOW-MAPPING-START token. + yaml_FLOW_MAPPING_END_TOKEN // A FLOW-MAPPING-END token. + + yaml_BLOCK_ENTRY_TOKEN // A BLOCK-ENTRY token. + yaml_FLOW_ENTRY_TOKEN // A FLOW-ENTRY token. + yaml_KEY_TOKEN // A KEY token. + yaml_VALUE_TOKEN // A VALUE token. + + yaml_ALIAS_TOKEN // An ALIAS token. + yaml_ANCHOR_TOKEN // An ANCHOR token. + yaml_TAG_TOKEN // A TAG token. + yaml_SCALAR_TOKEN // A SCALAR token. +) + +func (tt yaml_token_type_t) String() string { + switch tt { + case yaml_NO_TOKEN: + return "yaml_NO_TOKEN" + case yaml_STREAM_START_TOKEN: + return "yaml_STREAM_START_TOKEN" + case yaml_STREAM_END_TOKEN: + return "yaml_STREAM_END_TOKEN" + case yaml_VERSION_DIRECTIVE_TOKEN: + return "yaml_VERSION_DIRECTIVE_TOKEN" + case yaml_TAG_DIRECTIVE_TOKEN: + return "yaml_TAG_DIRECTIVE_TOKEN" + case yaml_DOCUMENT_START_TOKEN: + return "yaml_DOCUMENT_START_TOKEN" + case yaml_DOCUMENT_END_TOKEN: + return "yaml_DOCUMENT_END_TOKEN" + case yaml_BLOCK_SEQUENCE_START_TOKEN: + return "yaml_BLOCK_SEQUENCE_START_TOKEN" + case yaml_BLOCK_MAPPING_START_TOKEN: + return "yaml_BLOCK_MAPPING_START_TOKEN" + case yaml_BLOCK_END_TOKEN: + return "yaml_BLOCK_END_TOKEN" + case yaml_FLOW_SEQUENCE_START_TOKEN: + return "yaml_FLOW_SEQUENCE_START_TOKEN" + case yaml_FLOW_SEQUENCE_END_TOKEN: + return "yaml_FLOW_SEQUENCE_END_TOKEN" + case yaml_FLOW_MAPPING_START_TOKEN: + return "yaml_FLOW_MAPPING_START_TOKEN" + case yaml_FLOW_MAPPING_END_TOKEN: + return "yaml_FLOW_MAPPING_END_TOKEN" + case yaml_BLOCK_ENTRY_TOKEN: + return "yaml_BLOCK_ENTRY_TOKEN" + case yaml_FLOW_ENTRY_TOKEN: + return "yaml_FLOW_ENTRY_TOKEN" + case yaml_KEY_TOKEN: + return "yaml_KEY_TOKEN" + case yaml_VALUE_TOKEN: + return "yaml_VALUE_TOKEN" + case yaml_ALIAS_TOKEN: + return "yaml_ALIAS_TOKEN" + case yaml_ANCHOR_TOKEN: + return "yaml_ANCHOR_TOKEN" + case yaml_TAG_TOKEN: + return "yaml_TAG_TOKEN" + case yaml_SCALAR_TOKEN: + return "yaml_SCALAR_TOKEN" + } + return "" +} + +// The token structure. +type yaml_token_t struct { + // The token type. + typ yaml_token_type_t + + // The start/end of the token. + start_mark, end_mark yaml_mark_t + + // The stream encoding (for yaml_STREAM_START_TOKEN). + encoding yaml_encoding_t + + // The alias/anchor/scalar value or tag/tag directive handle + // (for yaml_ALIAS_TOKEN, yaml_ANCHOR_TOKEN, yaml_SCALAR_TOKEN, yaml_TAG_TOKEN, yaml_TAG_DIRECTIVE_TOKEN). + value []byte + + // The tag suffix (for yaml_TAG_TOKEN). + suffix []byte + + // The tag directive prefix (for yaml_TAG_DIRECTIVE_TOKEN). + prefix []byte + + // The scalar style (for yaml_SCALAR_TOKEN). + style yaml_scalar_style_t + + // The version directive major/minor (for yaml_VERSION_DIRECTIVE_TOKEN). + major, minor int8 +} + +// Events + +type yaml_event_type_t int8 + +// Event types. +const ( + // An empty event. + yaml_NO_EVENT yaml_event_type_t = iota + + yaml_STREAM_START_EVENT // A STREAM-START event. + yaml_STREAM_END_EVENT // A STREAM-END event. + yaml_DOCUMENT_START_EVENT // A DOCUMENT-START event. + yaml_DOCUMENT_END_EVENT // A DOCUMENT-END event. + yaml_ALIAS_EVENT // An ALIAS event. + yaml_SCALAR_EVENT // A SCALAR event. + yaml_SEQUENCE_START_EVENT // A SEQUENCE-START event. + yaml_SEQUENCE_END_EVENT // A SEQUENCE-END event. + yaml_MAPPING_START_EVENT // A MAPPING-START event. + yaml_MAPPING_END_EVENT // A MAPPING-END event. +) + +// The event structure. +type yaml_event_t struct { + + // The event type. + typ yaml_event_type_t + + // The start and end of the event. + start_mark, end_mark yaml_mark_t + + // The document encoding (for yaml_STREAM_START_EVENT). + encoding yaml_encoding_t + + // The version directive (for yaml_DOCUMENT_START_EVENT). + version_directive *yaml_version_directive_t + + // The list of tag directives (for yaml_DOCUMENT_START_EVENT). + tag_directives []yaml_tag_directive_t + + // The anchor (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_ALIAS_EVENT). + anchor []byte + + // The tag (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). + tag []byte + + // The scalar value (for yaml_SCALAR_EVENT). + value []byte + + // Is the document start/end indicator implicit, or the tag optional? + // (for yaml_DOCUMENT_START_EVENT, yaml_DOCUMENT_END_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT, yaml_SCALAR_EVENT). + implicit bool + + // Is the tag optional for any non-plain style? (for yaml_SCALAR_EVENT). + quoted_implicit bool + + // The style (for yaml_SCALAR_EVENT, yaml_SEQUENCE_START_EVENT, yaml_MAPPING_START_EVENT). + style yaml_style_t +} + +func (e *yaml_event_t) scalar_style() yaml_scalar_style_t { return yaml_scalar_style_t(e.style) } +func (e *yaml_event_t) sequence_style() yaml_sequence_style_t { return yaml_sequence_style_t(e.style) } +func (e *yaml_event_t) mapping_style() yaml_mapping_style_t { return yaml_mapping_style_t(e.style) } + +// Nodes + +const ( + yaml_NULL_TAG = "tag:yaml.org,2002:null" // The tag !!null with the only possible value: null. + yaml_BOOL_TAG = "tag:yaml.org,2002:bool" // The tag !!bool with the values: true and false. + yaml_STR_TAG = "tag:yaml.org,2002:str" // The tag !!str for string values. + yaml_INT_TAG = "tag:yaml.org,2002:int" // The tag !!int for integer values. + yaml_FLOAT_TAG = "tag:yaml.org,2002:float" // The tag !!float for float values. + yaml_TIMESTAMP_TAG = "tag:yaml.org,2002:timestamp" // The tag !!timestamp for date and time values. + + yaml_SEQ_TAG = "tag:yaml.org,2002:seq" // The tag !!seq is used to denote sequences. + yaml_MAP_TAG = "tag:yaml.org,2002:map" // The tag !!map is used to denote mapping. + + // Not in original libyaml. + yaml_BINARY_TAG = "tag:yaml.org,2002:binary" + yaml_MERGE_TAG = "tag:yaml.org,2002:merge" + + yaml_DEFAULT_SCALAR_TAG = yaml_STR_TAG // The default scalar tag is !!str. + yaml_DEFAULT_SEQUENCE_TAG = yaml_SEQ_TAG // The default sequence tag is !!seq. + yaml_DEFAULT_MAPPING_TAG = yaml_MAP_TAG // The default mapping tag is !!map. +) + +type yaml_node_type_t int + +// Node types. +const ( + // An empty node. + yaml_NO_NODE yaml_node_type_t = iota + + yaml_SCALAR_NODE // A scalar node. + yaml_SEQUENCE_NODE // A sequence node. + yaml_MAPPING_NODE // A mapping node. +) + +// An element of a sequence node. +type yaml_node_item_t int + +// An element of a mapping node. +type yaml_node_pair_t struct { + key int // The key of the element. + value int // The value of the element. +} + +// The node structure. +type yaml_node_t struct { + typ yaml_node_type_t // The node type. + tag []byte // The node tag. + + // The node data. + + // The scalar parameters (for yaml_SCALAR_NODE). + scalar struct { + value []byte // The scalar value. + length int // The length of the scalar value. + style yaml_scalar_style_t // The scalar style. + } + + // The sequence parameters (for YAML_SEQUENCE_NODE). + sequence struct { + items_data []yaml_node_item_t // The stack of sequence items. + style yaml_sequence_style_t // The sequence style. + } + + // The mapping parameters (for yaml_MAPPING_NODE). + mapping struct { + pairs_data []yaml_node_pair_t // The stack of mapping pairs (key, value). + pairs_start *yaml_node_pair_t // The beginning of the stack. + pairs_end *yaml_node_pair_t // The end of the stack. + pairs_top *yaml_node_pair_t // The top of the stack. + style yaml_mapping_style_t // The mapping style. + } + + start_mark yaml_mark_t // The beginning of the node. + end_mark yaml_mark_t // The end of the node. + +} + +// The document structure. +type yaml_document_t struct { + + // The document nodes. + nodes []yaml_node_t + + // The version directive. + version_directive *yaml_version_directive_t + + // The list of tag directives. + tag_directives_data []yaml_tag_directive_t + tag_directives_start int // The beginning of the tag directives list. + tag_directives_end int // The end of the tag directives list. + + start_implicit int // Is the document start indicator implicit? + end_implicit int // Is the document end indicator implicit? + + // The start/end of the document. + start_mark, end_mark yaml_mark_t +} + +// The prototype of a read handler. +// +// The read handler is called when the parser needs to read more bytes from the +// source. The handler should write not more than size bytes to the buffer. +// The number of written bytes should be set to the size_read variable. +// +// [in,out] data A pointer to an application data specified by +// yaml_parser_set_input(). +// [out] buffer The buffer to write the data from the source. +// [in] size The size of the buffer. +// [out] size_read The actual number of bytes read from the source. +// +// On success, the handler should return 1. If the handler failed, +// the returned value should be 0. On EOF, the handler should set the +// size_read to 0 and return 1. +type yaml_read_handler_t func(parser *yaml_parser_t, buffer []byte) (n int, err error) + +// This structure holds information about a potential simple key. +type yaml_simple_key_t struct { + possible bool // Is a simple key possible? + required bool // Is a simple key required? + token_number int // The number of the token. + mark yaml_mark_t // The position mark. +} + +// The states of the parser. +type yaml_parser_state_t int + +const ( + yaml_PARSE_STREAM_START_STATE yaml_parser_state_t = iota + + yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE // Expect the beginning of an implicit document. + yaml_PARSE_DOCUMENT_START_STATE // Expect DOCUMENT-START. + yaml_PARSE_DOCUMENT_CONTENT_STATE // Expect the content of a document. + yaml_PARSE_DOCUMENT_END_STATE // Expect DOCUMENT-END. + yaml_PARSE_BLOCK_NODE_STATE // Expect a block node. + yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE // Expect a block node or indentless sequence. + yaml_PARSE_FLOW_NODE_STATE // Expect a flow node. + yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a block sequence. + yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE // Expect an entry of a block sequence. + yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE // Expect an entry of an indentless sequence. + yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping. + yaml_PARSE_BLOCK_MAPPING_KEY_STATE // Expect a block mapping key. + yaml_PARSE_BLOCK_MAPPING_VALUE_STATE // Expect a block mapping value. + yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE // Expect the first entry of a flow sequence. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE // Expect an entry of a flow sequence. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE // Expect a key of an ordered mapping. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE // Expect a value of an ordered mapping. + yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE // Expect the and of an ordered mapping entry. + yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping. + yaml_PARSE_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping. + yaml_PARSE_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping. + yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE // Expect an empty value of a flow mapping. + yaml_PARSE_END_STATE // Expect nothing. +) + +func (ps yaml_parser_state_t) String() string { + switch ps { + case yaml_PARSE_STREAM_START_STATE: + return "yaml_PARSE_STREAM_START_STATE" + case yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE: + return "yaml_PARSE_IMPLICIT_DOCUMENT_START_STATE" + case yaml_PARSE_DOCUMENT_START_STATE: + return "yaml_PARSE_DOCUMENT_START_STATE" + case yaml_PARSE_DOCUMENT_CONTENT_STATE: + return "yaml_PARSE_DOCUMENT_CONTENT_STATE" + case yaml_PARSE_DOCUMENT_END_STATE: + return "yaml_PARSE_DOCUMENT_END_STATE" + case yaml_PARSE_BLOCK_NODE_STATE: + return "yaml_PARSE_BLOCK_NODE_STATE" + case yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE: + return "yaml_PARSE_BLOCK_NODE_OR_INDENTLESS_SEQUENCE_STATE" + case yaml_PARSE_FLOW_NODE_STATE: + return "yaml_PARSE_FLOW_NODE_STATE" + case yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE: + return "yaml_PARSE_BLOCK_SEQUENCE_FIRST_ENTRY_STATE" + case yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE: + return "yaml_PARSE_BLOCK_SEQUENCE_ENTRY_STATE" + case yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE: + return "yaml_PARSE_INDENTLESS_SEQUENCE_ENTRY_STATE" + case yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE: + return "yaml_PARSE_BLOCK_MAPPING_FIRST_KEY_STATE" + case yaml_PARSE_BLOCK_MAPPING_KEY_STATE: + return "yaml_PARSE_BLOCK_MAPPING_KEY_STATE" + case yaml_PARSE_BLOCK_MAPPING_VALUE_STATE: + return "yaml_PARSE_BLOCK_MAPPING_VALUE_STATE" + case yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_FIRST_ENTRY_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_KEY_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_VALUE_STATE" + case yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE: + return "yaml_PARSE_FLOW_SEQUENCE_ENTRY_MAPPING_END_STATE" + case yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE: + return "yaml_PARSE_FLOW_MAPPING_FIRST_KEY_STATE" + case yaml_PARSE_FLOW_MAPPING_KEY_STATE: + return "yaml_PARSE_FLOW_MAPPING_KEY_STATE" + case yaml_PARSE_FLOW_MAPPING_VALUE_STATE: + return "yaml_PARSE_FLOW_MAPPING_VALUE_STATE" + case yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE: + return "yaml_PARSE_FLOW_MAPPING_EMPTY_VALUE_STATE" + case yaml_PARSE_END_STATE: + return "yaml_PARSE_END_STATE" + } + return "" +} + +// This structure holds aliases data. +type yaml_alias_data_t struct { + anchor []byte // The anchor. + index int // The node id. + mark yaml_mark_t // The anchor mark. +} + +// The parser structure. +// +// All members are internal. Manage the structure using the +// yaml_parser_ family of functions. +type yaml_parser_t struct { + + // Error handling + + error yaml_error_type_t // Error type. + + problem string // Error description. + + // The byte about which the problem occured. + problem_offset int + problem_value int + problem_mark yaml_mark_t + + // The error context. + context string + context_mark yaml_mark_t + + // Reader stuff + + read_handler yaml_read_handler_t // Read handler. + + input_file io.Reader // File input data. + input []byte // String input data. + input_pos int + + eof bool // EOF flag + + buffer []byte // The working buffer. + buffer_pos int // The current position of the buffer. + + unread int // The number of unread characters in the buffer. + + raw_buffer []byte // The raw buffer. + raw_buffer_pos int // The current position of the buffer. + + encoding yaml_encoding_t // The input encoding. + + offset int // The offset of the current position (in bytes). + mark yaml_mark_t // The mark of the current position. + + // Scanner stuff + + stream_start_produced bool // Have we started to scan the input stream? + stream_end_produced bool // Have we reached the end of the input stream? + + flow_level int // The number of unclosed '[' and '{' indicators. + + tokens []yaml_token_t // The tokens queue. + tokens_head int // The head of the tokens queue. + tokens_parsed int // The number of tokens fetched from the queue. + token_available bool // Does the tokens queue contain a token ready for dequeueing. + + indent int // The current indentation level. + indents []int // The indentation levels stack. + + simple_key_allowed bool // May a simple key occur at the current position? + simple_keys []yaml_simple_key_t // The stack of simple keys. + + // Parser stuff + + state yaml_parser_state_t // The current parser state. + states []yaml_parser_state_t // The parser states stack. + marks []yaml_mark_t // The stack of marks. + tag_directives []yaml_tag_directive_t // The list of TAG directives. + + // Dumper stuff + + aliases []yaml_alias_data_t // The alias data. + + document *yaml_document_t // The currently parsed document. +} + +// Emitter Definitions + +// The prototype of a write handler. +// +// The write handler is called when the emitter needs to flush the accumulated +// characters to the output. The handler should write @a size bytes of the +// @a buffer to the output. +// +// @param[in,out] data A pointer to an application data specified by +// yaml_emitter_set_output(). +// @param[in] buffer The buffer with bytes to be written. +// @param[in] size The size of the buffer. +// +// @returns On success, the handler should return @c 1. If the handler failed, +// the returned value should be @c 0. +// +type yaml_write_handler_t func(emitter *yaml_emitter_t, buffer []byte) error + +type yaml_emitter_state_t int + +// The emitter states. +const ( + // Expect STREAM-START. + yaml_EMIT_STREAM_START_STATE yaml_emitter_state_t = iota + + yaml_EMIT_FIRST_DOCUMENT_START_STATE // Expect the first DOCUMENT-START or STREAM-END. + yaml_EMIT_DOCUMENT_START_STATE // Expect DOCUMENT-START or STREAM-END. + yaml_EMIT_DOCUMENT_CONTENT_STATE // Expect the content of a document. + yaml_EMIT_DOCUMENT_END_STATE // Expect DOCUMENT-END. + yaml_EMIT_FLOW_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a flow sequence. + yaml_EMIT_FLOW_SEQUENCE_ITEM_STATE // Expect an item of a flow sequence. + yaml_EMIT_FLOW_MAPPING_FIRST_KEY_STATE // Expect the first key of a flow mapping. + yaml_EMIT_FLOW_MAPPING_KEY_STATE // Expect a key of a flow mapping. + yaml_EMIT_FLOW_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a flow mapping. + yaml_EMIT_FLOW_MAPPING_VALUE_STATE // Expect a value of a flow mapping. + yaml_EMIT_BLOCK_SEQUENCE_FIRST_ITEM_STATE // Expect the first item of a block sequence. + yaml_EMIT_BLOCK_SEQUENCE_ITEM_STATE // Expect an item of a block sequence. + yaml_EMIT_BLOCK_MAPPING_FIRST_KEY_STATE // Expect the first key of a block mapping. + yaml_EMIT_BLOCK_MAPPING_KEY_STATE // Expect the key of a block mapping. + yaml_EMIT_BLOCK_MAPPING_SIMPLE_VALUE_STATE // Expect a value for a simple key of a block mapping. + yaml_EMIT_BLOCK_MAPPING_VALUE_STATE // Expect a value of a block mapping. + yaml_EMIT_END_STATE // Expect nothing. +) + +// The emitter structure. +// +// All members are internal. Manage the structure using the @c yaml_emitter_ +// family of functions. +type yaml_emitter_t struct { + + // Error handling + + error yaml_error_type_t // Error type. + problem string // Error description. + + // Writer stuff + + write_handler yaml_write_handler_t // Write handler. + + output_buffer *[]byte // String output data. + output_file io.Writer // File output data. + + buffer []byte // The working buffer. + buffer_pos int // The current position of the buffer. + + raw_buffer []byte // The raw buffer. + raw_buffer_pos int // The current position of the buffer. + + encoding yaml_encoding_t // The stream encoding. + + // Emitter stuff + + canonical bool // If the output is in the canonical style? + best_indent int // The number of indentation spaces. + best_width int // The preferred width of the output lines. + unicode bool // Allow unescaped non-ASCII characters? + line_break yaml_break_t // The preferred line break. + + state yaml_emitter_state_t // The current emitter state. + states []yaml_emitter_state_t // The stack of states. + + events []yaml_event_t // The event queue. + events_head int // The head of the event queue. + + indents []int // The stack of indentation levels. + + tag_directives []yaml_tag_directive_t // The list of tag directives. + + indent int // The current indentation level. + + flow_level int // The current flow level. + + root_context bool // Is it the document root context? + sequence_context bool // Is it a sequence context? + mapping_context bool // Is it a mapping context? + simple_key_context bool // Is it a simple mapping key context? + + line int // The current line. + column int // The current column. + whitespace bool // If the last character was a whitespace? + indention bool // If the last character was an indentation character (' ', '-', '?', ':')? + open_ended bool // If an explicit document end is required? + + // Anchor analysis. + anchor_data struct { + anchor []byte // The anchor value. + alias bool // Is it an alias? + } + + // Tag analysis. + tag_data struct { + handle []byte // The tag handle. + suffix []byte // The tag suffix. + } + + // Scalar analysis. + scalar_data struct { + value []byte // The scalar value. + multiline bool // Does the scalar contain line breaks? + flow_plain_allowed bool // Can the scalar be expessed in the flow plain style? + block_plain_allowed bool // Can the scalar be expressed in the block plain style? + single_quoted_allowed bool // Can the scalar be expressed in the single quoted style? + block_allowed bool // Can the scalar be expressed in the literal or folded styles? + style yaml_scalar_style_t // The output style. + } + + // Dumper stuff + + opened bool // If the stream was already opened? + closed bool // If the stream was already closed? + + // The information associated with the document nodes. + anchors *struct { + references int // The number of references. + anchor int // The anchor id. + serialized bool // If the node has been emitted? + } + + last_anchor_id int // The last assigned anchor id. + + document *yaml_document_t // The currently emitted document. +} diff --git a/components/engine/vendor/gopkg.in/yaml.v2/yamlprivateh.go b/components/engine/vendor/gopkg.in/yaml.v2/yamlprivateh.go new file mode 100644 index 0000000000..8110ce3c37 --- /dev/null +++ b/components/engine/vendor/gopkg.in/yaml.v2/yamlprivateh.go @@ -0,0 +1,173 @@ +package yaml + +const ( + // The size of the input raw buffer. + input_raw_buffer_size = 512 + + // The size of the input buffer. + // It should be possible to decode the whole raw buffer. + input_buffer_size = input_raw_buffer_size * 3 + + // The size of the output buffer. + output_buffer_size = 128 + + // The size of the output raw buffer. + // It should be possible to encode the whole output buffer. + output_raw_buffer_size = (output_buffer_size*2 + 2) + + // The size of other stacks and queues. + initial_stack_size = 16 + initial_queue_size = 16 + initial_string_size = 16 +) + +// Check if the character at the specified position is an alphabetical +// character, a digit, '_', or '-'. +func is_alpha(b []byte, i int) bool { + return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'Z' || b[i] >= 'a' && b[i] <= 'z' || b[i] == '_' || b[i] == '-' +} + +// Check if the character at the specified position is a digit. +func is_digit(b []byte, i int) bool { + return b[i] >= '0' && b[i] <= '9' +} + +// Get the value of a digit. +func as_digit(b []byte, i int) int { + return int(b[i]) - '0' +} + +// Check if the character at the specified position is a hex-digit. +func is_hex(b []byte, i int) bool { + return b[i] >= '0' && b[i] <= '9' || b[i] >= 'A' && b[i] <= 'F' || b[i] >= 'a' && b[i] <= 'f' +} + +// Get the value of a hex-digit. +func as_hex(b []byte, i int) int { + bi := b[i] + if bi >= 'A' && bi <= 'F' { + return int(bi) - 'A' + 10 + } + if bi >= 'a' && bi <= 'f' { + return int(bi) - 'a' + 10 + } + return int(bi) - '0' +} + +// Check if the character is ASCII. +func is_ascii(b []byte, i int) bool { + return b[i] <= 0x7F +} + +// Check if the character at the start of the buffer can be printed unescaped. +func is_printable(b []byte, i int) bool { + return ((b[i] == 0x0A) || // . == #x0A + (b[i] >= 0x20 && b[i] <= 0x7E) || // #x20 <= . <= #x7E + (b[i] == 0xC2 && b[i+1] >= 0xA0) || // #0xA0 <= . <= #xD7FF + (b[i] > 0xC2 && b[i] < 0xED) || + (b[i] == 0xED && b[i+1] < 0xA0) || + (b[i] == 0xEE) || + (b[i] == 0xEF && // #xE000 <= . <= #xFFFD + !(b[i+1] == 0xBB && b[i+2] == 0xBF) && // && . != #xFEFF + !(b[i+1] == 0xBF && (b[i+2] == 0xBE || b[i+2] == 0xBF)))) +} + +// Check if the character at the specified position is NUL. +func is_z(b []byte, i int) bool { + return b[i] == 0x00 +} + +// Check if the beginning of the buffer is a BOM. +func is_bom(b []byte, i int) bool { + return b[0] == 0xEF && b[1] == 0xBB && b[2] == 0xBF +} + +// Check if the character at the specified position is space. +func is_space(b []byte, i int) bool { + return b[i] == ' ' +} + +// Check if the character at the specified position is tab. +func is_tab(b []byte, i int) bool { + return b[i] == '\t' +} + +// Check if the character at the specified position is blank (space or tab). +func is_blank(b []byte, i int) bool { + //return is_space(b, i) || is_tab(b, i) + return b[i] == ' ' || b[i] == '\t' +} + +// Check if the character at the specified position is a line break. +func is_break(b []byte, i int) bool { + return (b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9) // PS (#x2029) +} + +func is_crlf(b []byte, i int) bool { + return b[i] == '\r' && b[i+1] == '\n' +} + +// Check if the character is a line break or NUL. +func is_breakz(b []byte, i int) bool { + //return is_break(b, i) || is_z(b, i) + return ( // is_break: + b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029) + // is_z: + b[i] == 0) +} + +// Check if the character is a line break, space, or NUL. +func is_spacez(b []byte, i int) bool { + //return is_space(b, i) || is_breakz(b, i) + return ( // is_space: + b[i] == ' ' || + // is_breakz: + b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029) + b[i] == 0) +} + +// Check if the character is a line break, space, tab, or NUL. +func is_blankz(b []byte, i int) bool { + //return is_blank(b, i) || is_breakz(b, i) + return ( // is_blank: + b[i] == ' ' || b[i] == '\t' || + // is_breakz: + b[i] == '\r' || // CR (#xD) + b[i] == '\n' || // LF (#xA) + b[i] == 0xC2 && b[i+1] == 0x85 || // NEL (#x85) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA8 || // LS (#x2028) + b[i] == 0xE2 && b[i+1] == 0x80 && b[i+2] == 0xA9 || // PS (#x2029) + b[i] == 0) +} + +// Determine the width of the character. +func width(b byte) int { + // Don't replace these by a switch without first + // confirming that it is being inlined. + if b&0x80 == 0x00 { + return 1 + } + if b&0xE0 == 0xC0 { + return 2 + } + if b&0xF0 == 0xE0 { + return 3 + } + if b&0xF8 == 0xF0 { + return 4 + } + return 0 + +}