1 files changed, 136 insertions, 0 deletions
diff --git a/vendor/git.iim.gay/grufwub/go-hashenc/hash.go b/vendor/git.iim.gay/grufwub/go-hashenc/hash.go
new file mode 100644
index 000000000..d291fa2f2
--- /dev/null
+++ b/vendor/git.iim.gay/grufwub/go-hashenc/hash.go
@@ -0,0 +1,136 @@
+package hashenc
+
+import (
+	"crypto/md5"
+	"crypto/sha1"
+	"crypto/sha256"
+	"crypto/sha512"
+	"hash"
+	"sync"
+)
+
+// Hash defines a pooled hash.Hash implementation
+type Hash interface {
+	// Hash ensures we implement the base hash.Hash implementation
+	hash.Hash
+
+	// Release resets the Hash and places it back in the pool
+	Release()
+}
+
+// poolHash is our Hash implementation, providing a hash.Hash and a pool to return to
+type poolHash struct {
+	hash.Hash
+	pool *sync.Pool
+}
+
+func (h *poolHash) Release() {
+	h.Reset()
+	h.pool.Put(h)
+}
+
+// SHA512Pool defines a pool of SHA512 hashes
+type SHA512Pool interface {
+	// SHA512 returns a Hash implementing the SHA512 hashing algorithm
+	SHA512() Hash
+}
+
+// NewSHA512Pool returns a new SHA512Pool implementation
+func NewSHA512Pool() SHA512Pool {
+	p := &sha512Pool{}
+	p.New = func() interface{} {
+		return &poolHash{
+			Hash: sha512.New(),
+			pool: &p.Pool,
+		}
+	}
+	return p
+}
+
+// sha512Pool is our SHA512Pool implementation, simply wrapping sync.Pool
+type sha512Pool struct {
+	sync.Pool
+}
+
+func (p *sha512Pool) SHA512() Hash {
+	return p.Get().(Hash)
+}
+
+// SHA256Pool defines a pool of SHA256 hashes
+type SHA256Pool interface {
+	// SHA256 returns a Hash implementing the SHA256 hashing algorithm
+	SHA256() Hash
+}
+
+// NewSHA256Pool returns a new SHA256Pool implementation
+func NewSHA256Pool() SHA256Pool {
+	p := &sha256Pool{}
+	p.New = func() interface{} {
+		return &poolHash{
+			Hash: sha256.New(),
+			pool: &p.Pool,
+		}
+	}
+	return p
+}
+
+// sha256Pool is our SHA256Pool implementation, simply wrapping sync.Pool
+type sha256Pool struct {
+	sync.Pool
+}
+
+func (p *sha256Pool) SHA256() Hash {
+	return p.Get().(Hash)
+}
+
+// SHA1Pool defines a pool of SHA1 hashes
+type SHA1Pool interface {
+	SHA1() Hash
+}
+
+// NewSHA1Pool returns a new SHA1Pool implementation
+func NewSHA1Pool() SHA1Pool {
+	p := &sha1Pool{}
+	p.New = func() interface{} {
+		return &poolHash{
+			Hash: sha1.New(),
+			pool: &p.Pool,
+		}
+	}
+	return p
+}
+
+// sha1Pool is our SHA1Pool implementation, simply wrapping sync.Pool
+type sha1Pool struct {
+	sync.Pool
+}
+
+func (p *sha1Pool) SHA1() Hash {
+	return p.Get().(Hash)
+}
+
+// MD5Pool defines a pool of MD5 hashes
+type MD5Pool interface {
+	MD5() Hash
+}
+
+// NewMD5Pool returns a new MD5 implementation
+func NewMD5Pool() MD5Pool {
+	p := &md5Pool{}
+	p.New = func() interface{} {
+		return &poolHash{
+			Hash: md5.New(),
+			pool: &p.Pool,
+		}
+	}
+	return p
+}
+
+// md5Pool is our MD5Pool implementation, simply wrapping sync.Pool
+type md5Pool struct {
+	sync.Pool
+}
+
+func (p *md5Pool) MD5() Hash {
+	return p.Get().(Hash)
+}