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authorMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
committerMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
commita031b83a09a8628435317a03f199cdc18b78262f (patch)
treebc017a96769ce6de33745b8b0b1304ccf38e9df0 /vendor/github.com/opencontainers/go-digest/digester.go
parent2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff)
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Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'vendor/github.com/opencontainers/go-digest/digester.go')
-rw-r--r--vendor/github.com/opencontainers/go-digest/digester.go39
1 files changed, 39 insertions, 0 deletions
diff --git a/vendor/github.com/opencontainers/go-digest/digester.go b/vendor/github.com/opencontainers/go-digest/digester.go
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+// Copyright 2017 Docker, Inc.
+//
+// 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
+//
+// https://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 digest
+
+import "hash"
+
+// Digester calculates the digest of written data. Writes should go directly
+// to the return value of Hash, while calling Digest will return the current
+// value of the digest.
+type Digester interface {
+ Hash() hash.Hash // provides direct access to underlying hash instance.
+ Digest() Digest
+}
+
+// digester provides a simple digester definition that embeds a hasher.
+type digester struct {
+ alg Algorithm
+ hash hash.Hash
+}
+
+func (d *digester) Hash() hash.Hash {
+ return d.hash
+}
+
+func (d *digester) Digest() Digest {
+ return NewDigest(d.alg, d.hash)
+}