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moby--moby/api/client/diff.go

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package client
import (
"fmt"
"github.com/docker/docker/engine"
"github.com/docker/docker/pkg/archive"
flag "github.com/docker/docker/pkg/mflag"
"github.com/docker/docker/utils"
)
// CmdDiff shows changes on a container's filesystem.
//
// Each changed file is printed on a separate line, prefixed with a single character that indicates the status of the file: C (modified), A (added), or D (deleted).
//
// Usage: docker diff CONTAINER
func (cli *DockerCli) CmdDiff(args ...string) error {
cmd := cli.Subcmd("diff", "CONTAINER", "Inspect changes on a container's filesystem", true)
cmd.Require(flag.Exact, 1)
utils.ParseFlags(cmd, args, true)
body, _, err := readBody(cli.call("GET", "/containers/"+cmd.Arg(0)+"/changes", nil, false))
if err != nil {
return err
}
outs := engine.NewTable("", 0)
if _, err := outs.ReadListFrom(body); err != nil {
return err
}
for _, change := range outs.Data {
var kind string
switch change.GetInt("Kind") {
case archive.ChangeModify:
kind = "C"
case archive.ChangeAdd:
kind = "A"
case archive.ChangeDelete:
kind = "D"
}
fmt.Fprintf(cli.out, "%s %s\n", kind, change.Get("Path"))
}
return nil
}