@@ -1,10 +1,8 @@

 package client

 import (

-	"encoding/json"

 	"fmt"

-	"github.com/docker/docker/api/types"

 	Cli "github.com/docker/docker/cli"

 	"github.com/docker/docker/pkg/archive"

 	flag "github.com/docker/docker/pkg/mflag"

@@ -27,18 +25,11 @@ func (cli *DockerCli) CmdDiff(args ...string) error {

 		return fmt.Errorf("Container name cannot be empty")

 	}

-	serverResp, err := cli.call("GET", "/containers/"+cmd.Arg(0)+"/changes", nil, nil)

+	changes, err := cli.client.ContainerDiff(cmd.Arg(0))

 	if err != nil {

 		return err

 	}

-	defer serverResp.body.Close()

-

-	changes := []types.ContainerChange{}

-	if err := json.NewDecoder(serverResp.body).Decode(&changes); err != nil {

-		return err

-	}

-

 	for _, change := range changes {

 		var kind string

 		switch change.Kind {

new file mode 100644

@@ -0,0 +1,25 @@

+package lib

+

+import (

+	"encoding/json"

+	"net/url"

+

+	"github.com/docker/docker/api/types"

+)

+

+// ContainerDiff shows differences in a container filesystem since it was started.

+func (cli *Client) ContainerDiff(containerID string) ([]types.ContainerChange, error) {

+	var changes []types.ContainerChange

+

+	serverResp, err := cli.GET("/containers/"+containerID+"/changes", url.Values{}, nil)

+	if err != nil {

+		return changes, err

+	}

+	defer serverResp.body.Close()

+

+	if err := json.NewDecoder(serverResp.body).Decode(&changes); err != nil {

+		return changes, err

+	}

+

+	return changes, nil

+}