github.com/ncdc/docker@v0.10.1-0.20160129113957-6c6729ef5b74/api/client/load.go (about)

     1  package client
     2  
     3  import (
     4  	"io"
     5  	"os"
     6  
     7  	Cli "github.com/docker/docker/cli"
     8  	"github.com/docker/docker/pkg/jsonmessage"
     9  	flag "github.com/docker/docker/pkg/mflag"
    10  )
    11  
    12  // CmdLoad loads an image from a tar archive.
    13  //
    14  // The tar archive is read from STDIN by default, or from a tar archive file.
    15  //
    16  // Usage: docker load [OPTIONS]
    17  func (cli *DockerCli) CmdLoad(args ...string) error {
    18  	cmd := Cli.Subcmd("load", nil, Cli.DockerCommands["load"].Description, true)
    19  	infile := cmd.String([]string{"i", "-input"}, "", "Read from a tar archive file, instead of STDIN")
    20  	cmd.Require(flag.Exact, 0)
    21  	cmd.ParseFlags(args, true)
    22  
    23  	var input io.Reader = cli.in
    24  	if *infile != "" {
    25  		file, err := os.Open(*infile)
    26  		if err != nil {
    27  			return err
    28  		}
    29  		defer file.Close()
    30  		input = file
    31  	}
    32  
    33  	response, err := cli.client.ImageLoad(input)
    34  	if err != nil {
    35  		return err
    36  	}
    37  	defer response.Body.Close()
    38  
    39  	if response.JSON {
    40  		return jsonmessage.DisplayJSONMessagesStream(response.Body, cli.out, cli.outFd, cli.isTerminalOut, nil)
    41  	}
    42  
    43  	_, err = io.Copy(cli.out, response.Body)
    44  	return err
    45  }