1 files changed, 65 insertions, 0 deletions
diff --git a/pkg/crane/push.go b/pkg/crane/push.go
new file mode 100644
index 0000000..6d1fbd6
--- /dev/null
+++ b/pkg/crane/push.go
@@ -0,0 +1,65 @@
+// Copyright 2018 Google LLC All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package crane
+
+import (
+	"fmt"
+
+	"github.com/google/go-containerregistry/pkg/name"
+	v1 "github.com/google/go-containerregistry/pkg/v1"
+	"github.com/google/go-containerregistry/pkg/v1/remote"
+	"github.com/google/go-containerregistry/pkg/v1/tarball"
+)
+
+// Load reads the tarball at path as a v1.Image.
+func Load(path string, opt ...Option) (v1.Image, error) {
+	return LoadTag(path, "")
+}
+
+// LoadTag reads a tag from the tarball at path as a v1.Image.
+// If tag is "", will attempt to read the tarball as a single image.
+func LoadTag(path, tag string, opt ...Option) (v1.Image, error) {
+	if tag == "" {
+		return tarball.ImageFromPath(path, nil)
+	}
+
+	o := makeOptions(opt...)
+	t, err := name.NewTag(tag, o.Name...)
+	if err != nil {
+		return nil, fmt.Errorf("parsing tag %q: %w", tag, err)
+	}
+	return tarball.ImageFromPath(path, &t)
+}
+
+// Push pushes the v1.Image img to a registry as dst.
+func Push(img v1.Image, dst string, opt ...Option) error {
+	o := makeOptions(opt...)
+	tag, err := name.ParseReference(dst, o.Name...)
+	if err != nil {
+		return fmt.Errorf("parsing reference %q: %w", dst, err)
+	}
+	return remote.Write(tag, img, o.Remote...)
+}
+
+// Upload pushes the v1.Layer to a given repo.
+func Upload(layer v1.Layer, repo string, opt ...Option) error {
+	o := makeOptions(opt...)
+	ref, err := name.NewRepository(repo, o.Name...)
+	if err != nil {
+		return fmt.Errorf("parsing repo %q: %w", repo, err)
+	}
+
+	return remote.WriteLayer(ref, layer, o.Remote...)
+}