distribution/vendor/github.com/opencontainers/go-digest/digester.go
Stephen J Day 72150bef10 vendor: add opencontainers/go-digest to vendor.conf
Signed-off-by: Stephen J Day <stephen.day@docker.com>
2017-01-06 15:42:12 -08:00

25 lines
586 B
Go

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)
}