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docker save: --output flag

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for those that do not care to redirect stdout

Docker-DCO-1.1-Signed-off-by: Vincent Batts <vbatts@redhat.com> (github: vbatts)
This commit is contained in:
Vincent Batts 2014-03-19 14:30:13 -04:00
parent 47470d299d
commit 5127732c79
1 changed files with 11 additions and 1 deletions
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12
api/client.go
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@ -2044,6 +2044,8 @@ 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)")
outfile := cmd.String([]string{"o", "-output"}, "", "Write to an file, instead of STDOUT")
if err := cmd.Parse(args); err != nil {
return err
}
@ -2053,8 +2055,16 @@ func (cli *DockerCli) CmdSave(args ...string) error {
return nil
}
var output io.Writer = cli.out
var 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