List images: support filtering

dockerclient.go

@@ -539,12 +539,39 @@ func (client *DockerClient) RemoveContainer(id string, force, volumes bool) erro
 	return err
 }
 
-func (client *DockerClient) ListImages(all bool) ([]*Image, error) {
+func (client *DockerClient) ListImages(all bool, filter *ListFilter) ([]*Image, error) {
 	argAll := 0
 	if all {
 		argAll = 1
 	}
+
+	filters := make(map[string][]string)
+
+	if filter.Dangling {
+		filters["dangling"] = []string{"true"}
+	}
+
+	if len(filter.Keys) > 0 {
+		for _, key := range filter.Keys {
+			filters["key"] = append(filters["key"], key)
+		}
+	}
+
+	if len(filter.Labels) > 0 {
+		for _, label := range filter.Labels {
+			filters["label"] = append(filters["label"], label)
+		}
+	}
+
 	uri := fmt.Sprintf("/%s/images/json?all=%d", APIVersion, argAll)
+	if len(filters) > 0 {
+		mf, err := json.Marshal(filters)
+		if err != nil {
+			return nil, err
+		}
+		uri += fmt.Sprintf("&filters=%s", url.QueryEscape(string(mf)))
+	}
+
 	data, err := client.doRequest("GET", uri, nil, nil)
 	if err != nil {
 		return nil, err

interface.go

@@ -35,7 +35,7 @@ type Client interface {
 	PullImage(name string, auth *AuthConfig) error
 	LoadImage(reader io.Reader) error
 	RemoveContainer(id string, force, volumes bool) error
-	ListImages(all bool) ([]*Image, error)
+	ListImages(all bool, filter *ListFilter) ([]*Image, error)
 	RemoveImage(name string) ([]*ImageDelete, error)
 	PauseContainer(name string) error
 	UnpauseContainer(name string) error

mockclient/mock.go

@@ -116,8 +116,8 @@ func (client *MockClient) RemoveContainer(id string, force, volumes bool) error
 	return args.Error(0)
 }
 
-func (client *MockClient) ListImages(all bool) ([]*dockerclient.Image, error) {
-	args := client.Mock.Called(all)
+func (client *MockClient) ListImages(all bool, filter *ListFilter) ([]*dockerclient.Image, error) {
+	args := client.Mock.Called(all, filter)
 	return args.Get(0).([]*dockerclient.Image), args.Error(1)
 }
 

types.go

@@ -437,3 +437,9 @@ type BuildImage struct {
 	CpuSetMems     string
 	CgroupParent   string
 }
+
+type ListFilter struct {
+	Dangling bool
+	Labels   []string
+	Keys     []string
+}