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-rw-r--r--pkg/v1/layout/blob.go37
1 files changed, 37 insertions, 0 deletions
diff --git a/pkg/v1/layout/blob.go b/pkg/v1/layout/blob.go
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+++ b/pkg/v1/layout/blob.go
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+// 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 layout
+
+import (
+ "io"
+ "os"
+
+ v1 "github.com/google/go-containerregistry/pkg/v1"
+)
+
+// Blob returns a blob with the given hash from the Path.
+func (l Path) Blob(h v1.Hash) (io.ReadCloser, error) {
+ return os.Open(l.blobPath(h))
+}
+
+// Bytes is a convenience function to return a blob from the Path as
+// a byte slice.
+func (l Path) Bytes(h v1.Hash) ([]byte, error) {
+ return os.ReadFile(l.blobPath(h))
+}
+
+func (l Path) blobPath(h v1.Hash) string {
+ return l.path("blobs", h.Algorithm, h.Hex)
+}