add git.iim.gay/grufwub/go-store for storage backend, replacing blob.Storage

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

vendor/git.iim.gay/grufwub/go-hashenc/README.md

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+HashEncoder provides a means of quickly hash-summing and encoding data

vendor/git.iim.gay/grufwub/go-hashenc/enc.go

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+package hashenc
+
+import (
+	"encoding/base32"
+	"encoding/base64"
+	"encoding/hex"
+)
+
+// Encoder defines an interface for encoding binary data
+type Encoder interface {
+	// Encode encodes the data at src into dst
+	Encode(dst []byte, src []byte)
+
+	// EncodedLen returns the encoded length for input data of supplied length
+	EncodedLen(int) int
+}
+
+// Base32 returns a new base32 Encoder
+func Base32() Encoder {
+	return base32.StdEncoding.WithPadding(base64.NoPadding)
+}
+
+// Base64 returns a new base64 Encoder
+func Base64() Encoder {
+	return base64.URLEncoding.WithPadding(base64.NoPadding)
+}
+
+// Hex returns a new hex Encoder
+func Hex() Encoder {
+	return &hexEncoder{}
+}
+
+// hexEncoder simply provides an empty receiver to satisfy Encoder
+type hexEncoder struct{}
+
+func (*hexEncoder) Encode(dst []byte, src []byte) {
+	hex.Encode(dst, src)
+}
+
+func (*hexEncoder) EncodedLen(len int) int {
+	return hex.EncodedLen(len)
+}

vendor/git.iim.gay/grufwub/go-hashenc/hash.go

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+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)
+}

vendor/git.iim.gay/grufwub/go-hashenc/hashenc.go

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+package hashenc
+
+import (
+	"hash"
+
+	"git.iim.gay/grufwub/go-bytes"
+)
+
+// HashEncoder defines an interface for calculating encoded hash sums of binary data
+type HashEncoder interface {
+	// EncodeSum calculates the hash sum of src and encodes (at most) Size() into dst
+	EncodeSum(dst []byte, src []byte)
+
+	// EncodedSum calculates the encoded hash sum of src and returns data in a newly allocated bytes.Bytes
+	EncodedSum(src []byte) bytes.Bytes
+
+	// Size returns the expected length of encoded hashes
+	Size() int
+}
+
+// New returns a new HashEncoder instance based on supplied hash.Hash and Encoder supplying functions
+func New(hash hash.Hash, enc Encoder) HashEncoder {
+	hashSize := hash.Size()
+	return &henc{
+		hash: hash,
+		hbuf: make([]byte, hashSize),
+		enc:  enc,
+		size: enc.EncodedLen(hashSize),
+	}
+}
+
+// henc is the HashEncoder implementation
+type henc struct {
+	hash hash.Hash
+	hbuf []byte
+	enc  Encoder
+	size int
+}
+
+func (henc *henc) EncodeSum(dst []byte, src []byte) {
+	// Hash supplied bytes
+	henc.hash.Reset()
+	henc.hash.Write(src)
+	henc.hbuf = henc.hash.Sum(henc.hbuf[:0])
+
+	// Encode the hashsum and return a copy
+	henc.enc.Encode(dst, henc.hbuf)
+}
+
+func (henc *henc) EncodedSum(src []byte) bytes.Bytes {
+	dst := make([]byte, henc.size)
+	henc.EncodeSum(dst, src)
+	return bytes.ToBytes(dst)
+}
+
+func (henc *henc) Size() int {
+	return henc.size
+}