58 lines
1.4 KiB
Go
58 lines
1.4 KiB
Go
package client
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import (
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"fmt"
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"io"
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"strings"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/pkg/archive"
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flag "github.com/docker/docker/pkg/mflag"
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)
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// CmdCp copies files/folders from a path on the container to a directory on the host running the command.
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//
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// If HOSTDIR is '-', the data is written as a tar file to STDOUT.
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//
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// Usage: docker cp CONTAINER:PATH HOSTDIR
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func (cli *DockerCli) CmdCp(args ...string) error {
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cmd := cli.Subcmd("cp", "CONTAINER:PATH HOSTDIR|-", "Copy files/folders from a PATH on the container to a HOSTDIR on the host\nrunning the command. Use '-' to write the data as a tar file to STDOUT.", true)
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cmd.Require(flag.Exact, 2)
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cmd.ParseFlags(args, true)
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// deal with path name with `:`
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info := strings.SplitN(cmd.Arg(0), ":", 2)
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if len(info) != 2 {
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return fmt.Errorf("Error: Path not specified")
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}
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cfg := &types.CopyConfig{
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Resource: info[1],
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}
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stream, statusCode, err := cli.call("POST", "/containers/"+info[0]+"/copy", cfg, nil)
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if stream != nil {
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defer stream.Close()
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}
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if statusCode == 404 {
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return fmt.Errorf("No such container: %v", info[0])
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}
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if err != nil {
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return err
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}
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hostPath := cmd.Arg(1)
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if statusCode == 200 {
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if hostPath == "-" {
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_, err = io.Copy(cli.out, stream)
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} else {
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err = archive.Untar(stream, hostPath, &archive.TarOptions{NoLchown: true})
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}
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if err != nil {
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return err
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}
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}
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return nil
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}
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