Move api/client -> cli/command

Using
  gomvpkg
     -from github.com/docker/docker/api/client
     -to github.com/docker/docker/cli/command
     -vcs_mv_cmd 'git mv {{.Src}} {{.Dst}}'

Signed-off-by: Daniel Nephin <dnephin@docker.com>
Upstream-commit: 0640a14b4fcba3715f7cc3bc9444f3c7f4827edd
Component: engine

components/engine/cli/command/container/tty.go

@@ -0,0 +1,103 @@
+package container
+
+import (
+	"fmt"
+	"os"
+	gosignal "os/signal"
+	"runtime"
+	"time"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/docker/docker/cli/command"
+	"github.com/docker/docker/api/types"
+	"github.com/docker/docker/client"
+	"github.com/docker/docker/pkg/signal"
+	"golang.org/x/net/context"
+)
+
+// resizeTtyTo resizes tty to specific height and width
+func resizeTtyTo(ctx context.Context, client client.ContainerAPIClient, id string, height, width int, isExec bool) {
+	if height == 0 && width == 0 {
+		return
+	}
+
+	options := types.ResizeOptions{
+		Height: height,
+		Width:  width,
+	}
+
+	var err error
+	if isExec {
+		err = client.ContainerExecResize(ctx, id, options)
+	} else {
+		err = client.ContainerResize(ctx, id, options)
+	}
+
+	if err != nil {
+		logrus.Debugf("Error resize: %s", err)
+	}
+}
+
+// MonitorTtySize updates the container tty size when the terminal tty changes size
+func MonitorTtySize(ctx context.Context, cli *command.DockerCli, id string, isExec bool) error {
+	resizeTty := func() {
+		height, width := cli.Out().GetTtySize()
+		resizeTtyTo(ctx, cli.Client(), id, height, width, isExec)
+	}
+
+	resizeTty()
+
+	if runtime.GOOS == "windows" {
+		go func() {
+			prevH, prevW := cli.Out().GetTtySize()
+			for {
+				time.Sleep(time.Millisecond * 250)
+				h, w := cli.Out().GetTtySize()
+
+				if prevW != w || prevH != h {
+					resizeTty()
+				}
+				prevH = h
+				prevW = w
+			}
+		}()
+	} else {
+		sigchan := make(chan os.Signal, 1)
+		gosignal.Notify(sigchan, signal.SIGWINCH)
+		go func() {
+			for range sigchan {
+				resizeTty()
+			}
+		}()
+	}
+	return nil
+}
+
+// ForwardAllSignals forwards signals to the container
+func ForwardAllSignals(ctx context.Context, cli *command.DockerCli, cid string) chan os.Signal {
+	sigc := make(chan os.Signal, 128)
+	signal.CatchAll(sigc)
+	go func() {
+		for s := range sigc {
+			if s == signal.SIGCHLD || s == signal.SIGPIPE {
+				continue
+			}
+			var sig string
+			for sigStr, sigN := range signal.SignalMap {
+				if sigN == s {
+					sig = sigStr
+					break
+				}
+			}
+			if sig == "" {
+				fmt.Fprintf(cli.Err(), "Unsupported signal: %v. Discarding.\n", s)
+				continue
+			}
+
+			if err := cli.Client().ContainerKill(ctx, cid, sig); err != nil {
+				logrus.Debugf("Error sending signal: %s", err)
+			}
+		}
+	}()
+	return sigc
+}