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Merge pull request #4778 from vbatts/vbatts-save_to_output

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`docker save --output` flags
This commit is contained in:
Michael Crosby
2014-03-24 16:52:08 -07:00
parent c3ff1f41bb 78a0105eaf
commit a258d048a2
2 changed files with 34 additions and 5 deletions
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api/client.go
+14 -2
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@@ -2044,7 +2044,9 @@ func (cli *DockerCli) CmdCp(args ...string) error {
}
func (cli *DockerCli) CmdSave(args ...string) error {
cmd := cli.Subcmd("save", "IMAGE", "Save an image to a tar archive (streamed to stdout)")
cmd := cli.Subcmd("save", "IMAGE", "Save an image to a tar archive (streamed to stdout by default)")
outfile := cmd.String([]string{"o", "-output"}, "", "Write to an file, instead of STDOUT")
if err := cmd.Parse(args); err != nil {
return err
}
@@ -2054,8 +2056,18 @@ func (cli *DockerCli) CmdSave(args ...string) error {
return nil
}
var (
output io.Writer = cli.out
err error
)
if *outfile != "" {
output, err = os.Create(*outfile)
if err != nil {
return err
}
}
image := cmd.Arg(0)
if err := cli.stream("GET", "/images/"+image+"/get", nil, cli.out, nil); err != nil {
if err := cli.stream("GET", "/images/"+image+"/get", nil, output, nil); err != nil {
return err
}
return nil