api/client - The code for all cli commands are in one file #11610

Signed-off-by: Joey Gibson <joey@joeygibson.com>

api/client/save.go

@@ -0,0 +1,48 @@
+package client
+
+import (
+	"errors"
+	"io"
+	"net/url"
+	"os"
+
+	flag "github.com/docker/docker/pkg/mflag"
+	"github.com/docker/docker/utils"
+)
+
+func (cli *DockerCli) CmdSave(args ...string) error {
+	cmd := cli.Subcmd("save", "IMAGE [IMAGE...]", "Save an image(s) to a tar archive (streamed to STDOUT by default)", true)
+	outfile := cmd.String([]string{"o", "-output"}, "", "Write to an file, instead of STDOUT")
+	cmd.Require(flag.Min, 1)
+
+	utils.ParseFlags(cmd, args, true)
+
+	var (
+		output io.Writer = cli.out
+		err    error
+	)
+	if *outfile != "" {
+		output, err = os.Create(*outfile)
+		if err != nil {
+			return err
+		}
+	} else if cli.isTerminalOut {
+		return errors.New("Cowardly refusing to save to a terminal. Use the -o flag or redirect.")
+	}
+
+	if len(cmd.Args()) == 1 {
+		image := cmd.Arg(0)
+		if err := cli.stream("GET", "/images/"+image+"/get", nil, output, nil); err != nil {
+			return err
+		}
+	} else {
+		v := url.Values{}
+		for _, arg := range cmd.Args() {
+			v.Add("names", arg)
+		}
+		if err := cli.stream("GET", "/images/get?"+v.Encode(), nil, output, nil); err != nil {
+			return err
+		}
+	}
+	return nil
+}