Import docker/docker/cli

Signed-off-by: Daniel Nephin <dnephin@gmail.com>

cli/command/formatter/diff.go

@@ -0,0 +1,72 @@
+package formatter
+
+import (
+	"github.com/docker/docker/api/types/container"
+	"github.com/docker/docker/pkg/archive"
+)
+
+const (
+	defaultDiffTableFormat = "table {{.Type}}\t{{.Path}}"
+
+	changeTypeHeader = "CHANGE TYPE"
+	pathHeader       = "PATH"
+)
+
+// NewDiffFormat returns a format for use with a diff Context
+func NewDiffFormat(source string) Format {
+	switch source {
+	case TableFormatKey:
+		return defaultDiffTableFormat
+	}
+	return Format(source)
+}
+
+// DiffWrite writes formatted diff using the Context
+func DiffWrite(ctx Context, changes []container.ContainerChangeResponseItem) error {
+
+	render := func(format func(subContext subContext) error) error {
+		for _, change := range changes {
+			if err := format(&diffContext{c: change}); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+	return ctx.Write(newDiffContext(), render)
+}
+
+type diffContext struct {
+	HeaderContext
+	c container.ContainerChangeResponseItem
+}
+
+func newDiffContext() *diffContext {
+	diffCtx := diffContext{}
+	diffCtx.header = map[string]string{
+		"Type": changeTypeHeader,
+		"Path": pathHeader,
+	}
+	return &diffCtx
+}
+
+func (d *diffContext) MarshalJSON() ([]byte, error) {
+	return marshalJSON(d)
+}
+
+func (d *diffContext) Type() string {
+	var kind string
+	switch d.c.Kind {
+	case archive.ChangeModify:
+		kind = "C"
+	case archive.ChangeAdd:
+		kind = "A"
+	case archive.ChangeDelete:
+		kind = "D"
+	}
+	return kind
+
+}
+
+func (d *diffContext) Path() string {
+	return d.c.Path
+}