Merge pull request #284 from thinxer/binary

replace util/bytes.go with binary.BigEndian (again)

12 files changed, 123 insertions, 117 deletions

diff --git a/go/operation/sync_volume.go b/go/operation/sync_volume.go
index 54944a64e..626b2a7ba 100644
--- a/go/operation/sync_volume.go
+++ b/go/operation/sync_volume.go
@@ -1,6 +1,7 @@
 package operation
 
 import (
+	"encoding/binary"
 	"encoding/json"
 	"fmt"
 	"net/url"
@@ -42,9 +43,9 @@ func GetVolumeIdxEntries(server string, vid string, eachEntryFn func(key uint64,
 	values.Add("volume", vid)
 	line := make([]byte, 16)
 	err := util.GetBufferStream("http://"+server+"/admin/sync/index", values, line, func(bytes []byte) {
-		key := util.BytesToUint64(bytes[:8])
-		offset := util.BytesToUint32(bytes[8:12])
-		size := util.BytesToUint32(bytes[12:16])
+		key := binary.BigEndian.Uint64(bytes[:8])
+		offset := binary.BigEndian.Uint32(bytes[8:12])
+		size := binary.BigEndian.Uint32(bytes[12:16])
 		eachEntryFn(key, offset, size)
 	})
 	if err != nil {
diff --git a/go/storage/compact_map_perf_test.go b/go/storage/compact_map_perf_test.go
index 1b429f263..7fd4c2dfb 100644
--- a/go/storage/compact_map_perf_test.go
+++ b/go/storage/compact_map_perf_test.go
@@ -1,12 +1,12 @@
 package storage
 
 import (
+	"encoding/binary"
 	"log"
 	"os"
 	"testing"
 
 	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 func TestMemoryUsage(t *testing.T) {
@@ -29,9 +29,9 @@ func LoadNewNeedleMap(file *os.File) CompactMap {
 	}
 	for count > 0 && e == nil {
 		for i := 0; i < count; i += 16 {
-			key := util.BytesToUint64(bytes[i : i+8])
-			offset := util.BytesToUint32(bytes[i+8 : i+12])
-			size := util.BytesToUint32(bytes[i+12 : i+16])
+			key := binary.BigEndian.Uint64(bytes[i : i+8])
+			offset := binary.BigEndian.Uint32(bytes[i+8 : i+12])
+			size := binary.BigEndian.Uint32(bytes[i+12 : i+16])
 			if offset > 0 {
 				m.Set(Key(key), offset, size)
 			} else {
diff --git a/go/storage/crc.go b/go/storage/crc.go
index 21e384854..3150b786c 100644
--- a/go/storage/crc.go
+++ b/go/storage/crc.go
@@ -1,10 +1,10 @@
 package storage
 
 import (
+	"encoding/binary"
 	"fmt"
-	"github.com/klauspost/crc32"
 
-	"github.com/chrislusf/seaweedfs/go/util"
+	"github.com/klauspost/crc32"
 )
 
 var table = crc32.MakeTable(crc32.Castagnoli)
@@ -25,6 +25,6 @@ func (c CRC) Value() uint32 {
 
 func (n *Needle) Etag() string {
 	bits := make([]byte, 4)
-	util.Uint32toBytes(bits, uint32(n.Checksum))
+	binary.BigEndian.PutUint32(bits, uint32(n.Checksum))
 	return fmt.Sprintf("\"%x\"", bits)
 }
diff --git a/go/storage/file_id.go b/go/storage/file_id.go
index 64b61ba89..3d2944403 100644
--- a/go/storage/file_id.go
+++ b/go/storage/file_id.go
@@ -1,12 +1,12 @@
 package storage
 
 import (
+	"encoding/binary"
 	"encoding/hex"
 	"errors"
 	"strings"
 
 	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 type FileId struct {
@@ -34,8 +34,8 @@ func ParseFileId(fid string) (*FileId, error) {
 }
 func (n *FileId) String() string {
 	bytes := make([]byte, 12)
-	util.Uint64toBytes(bytes[0:8], n.Key)
-	util.Uint32toBytes(bytes[8:12], n.Hashcode)
+	binary.BigEndian.PutUint64(bytes[0:8], n.Key)
+	binary.BigEndian.PutUint32(bytes[8:12], n.Hashcode)
 	nonzero_index := 0
 	for ; bytes[nonzero_index] == 0; nonzero_index++ {
 	}
diff --git a/go/storage/needle.go b/go/storage/needle.go
index e49368820..66cf5b22a 100644
--- a/go/storage/needle.go
+++ b/go/storage/needle.go
@@ -1,7 +1,6 @@
 package storage
 
 import (
-	"encoding/hex"
 	"errors"
 	"fmt"
 	"io/ioutil"
@@ -15,7 +14,6 @@ import (
 	"github.com/chrislusf/seaweedfs/go/glog"
 	"github.com/chrislusf/seaweedfs/go/images"
 	"github.com/chrislusf/seaweedfs/go/operation"
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 const (
@@ -213,16 +211,25 @@ func (n *Needle) ParsePath(fid string) (err error) {
 }
 
 func ParseKeyHash(key_hash_string string) (uint64, uint32, error) {
-	if len(key_hash_string)%2 == 1 {
-		key_hash_string = "0" + key_hash_string
-	}
-	key_hash_bytes, khe := hex.DecodeString(key_hash_string)
-	key_hash_len := len(key_hash_bytes)
-	if khe != nil || key_hash_len <= 4 {
-		glog.V(0).Infoln("Invalid key_hash", key_hash_string, "length:", key_hash_len, "error", khe)
+	key, hash, ok := parseKeyHash(key_hash_string)
+	if !ok {
 		return 0, 0, errors.New("Invalid key and hash:" + key_hash_string)
 	}
-	key := util.BytesToUint64(key_hash_bytes[0 : key_hash_len-4])
-	hash := util.BytesToUint32(key_hash_bytes[key_hash_len-4 : key_hash_len])
 	return key, hash, nil
 }
+
+func parseKeyHash(keyhash string) (uint64, uint32, bool) {
+	if len(keyhash) <= 8 || len(keyhash) > 24 {
+		return 0, 0, false
+	}
+	split := len(keyhash) - 8
+	key, err := strconv.ParseUint(keyhash[:split], 16, 64)
+	if err != nil {
+		return 0, 0, false
+	}
+	hash, err := strconv.ParseUint(keyhash[split:], 16, 32)
+	if err != nil {
+		return 0, 0, false
+	}
+	return key, uint32(hash), true
+}
diff --git a/go/storage/needle_map.go b/go/storage/needle_map.go
index 814789616..41f53b90b 100644
--- a/go/storage/needle_map.go
+++ b/go/storage/needle_map.go
@@ -1,12 +1,11 @@
 package storage
 
 import (
+	"encoding/binary"
 	"fmt"
 	"io/ioutil"
 	"os"
 	"sync"
-
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 type NeedleMapType int
@@ -53,16 +52,16 @@ func (nm baseNeedleMapper) IndexFileName() string {
 }
 
 func idxFileEntry(bytes []byte) (key uint64, offset uint32, size uint32) {
-	key = util.BytesToUint64(bytes[:8])
-	offset = util.BytesToUint32(bytes[8:12])
-	size = util.BytesToUint32(bytes[12:16])
+	key = binary.BigEndian.Uint64(bytes[:8])
+	offset = binary.BigEndian.Uint32(bytes[8:12])
+	size = binary.BigEndian.Uint32(bytes[12:16])
 	return
 }
 func (nm baseNeedleMapper) appendToIndexFile(key uint64, offset uint32, size uint32) error {
 	bytes := make([]byte, 16)
-	util.Uint64toBytes(bytes[0:8], key)
-	util.Uint32toBytes(bytes[8:12], offset)
-	util.Uint32toBytes(bytes[12:16], size)
+	binary.BigEndian.PutUint64(bytes[0:8], key)
+	binary.BigEndian.PutUint32(bytes[8:12], offset)
+	binary.BigEndian.PutUint32(bytes[12:16], size)
 
 	nm.indexFileAccessLock.Lock()
 	defer nm.indexFileAccessLock.Unlock()
diff --git a/go/storage/needle_map_boltdb.go b/go/storage/needle_map_boltdb.go
index e95c016bb..a17e6ccf6 100644
--- a/go/storage/needle_map_boltdb.go
+++ b/go/storage/needle_map_boltdb.go
@@ -1,13 +1,12 @@
 package storage
 
 import (
+	"encoding/binary"
 	"fmt"
 	"os"
 
 	"github.com/boltdb/bolt"
-
 	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 type BoltDbNeedleMap struct {
@@ -75,7 +74,7 @@ func generateBoltDbFile(dbFileName string, indexFile *os.File) error {
 func (m *BoltDbNeedleMap) Get(key uint64) (element *NeedleValue, ok bool) {
 	bytes := make([]byte, 8)
 	var data []byte
-	util.Uint64toBytes(bytes, key)
+	binary.BigEndian.PutUint64(bytes, key)
 	err := m.db.View(func(tx *bolt.Tx) error {
 		bucket := tx.Bucket(boltdbBucket)
 		if bucket == nil {
@@ -89,8 +88,8 @@ func (m *BoltDbNeedleMap) Get(key uint64) (element *NeedleValue, ok bool) {
 	if err != nil || len(data) != 8 {
 		return nil, false
 	}
-	offset := util.BytesToUint32(data[0:4])
-	size := util.BytesToUint32(data[4:8])
+	offset := binary.BigEndian.Uint32(data[0:4])
+	size := binary.BigEndian.Uint32(data[4:8])
 	return &NeedleValue{Key: Key(key), Offset: offset, Size: size}, true
 }
 
@@ -110,9 +109,9 @@ func (m *BoltDbNeedleMap) Put(key uint64, offset uint32, size uint32) error {
 func boltDbWrite(db *bolt.DB,
 	key uint64, offset uint32, size uint32) error {
 	bytes := make([]byte, 16)
-	util.Uint64toBytes(bytes[0:8], key)
-	util.Uint32toBytes(bytes[8:12], offset)
-	util.Uint32toBytes(bytes[12:16], size)
+	binary.BigEndian.PutUint64(bytes[0:8], key)
+	binary.BigEndian.PutUint32(bytes[8:12], offset)
+	binary.BigEndian.PutUint32(bytes[12:16], size)
 	return db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists(boltdbBucket)
 		if err != nil {
@@ -128,7 +127,7 @@ func boltDbWrite(db *bolt.DB,
 }
 func boltDbDelete(db *bolt.DB, key uint64) error {
 	bytes := make([]byte, 8)
-	util.Uint64toBytes(bytes, key)
+	binary.BigEndian.PutUint64(bytes, key)
 	return db.Update(func(tx *bolt.Tx) error {
 		bucket, err := tx.CreateBucketIfNotExists(boltdbBucket)
 		if err != nil {
diff --git a/go/storage/needle_map_leveldb.go b/go/storage/needle_map_leveldb.go
index 47f63e3ae..f9e580f6a 100644
--- a/go/storage/needle_map_leveldb.go
+++ b/go/storage/needle_map_leveldb.go
@@ -1,12 +1,12 @@
 package storage
 
 import (
+	"encoding/binary"
 	"fmt"
 	"os"
 	"path/filepath"
 
 	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
 	"github.com/syndtr/goleveldb/leveldb"
 )
 
@@ -72,13 +72,13 @@ func generateLevelDbFile(dbFileName string, indexFile *os.File) error {
 
 func (m *LevelDbNeedleMap) Get(key uint64) (element *NeedleValue, ok bool) {
 	bytes := make([]byte, 8)
-	util.Uint64toBytes(bytes, key)
+	binary.BigEndian.PutUint64(bytes, key)
 	data, err := m.db.Get(bytes, nil)
 	if err != nil || len(data) != 8 {
 		return nil, false
 	}
-	offset := util.BytesToUint32(data[0:4])
-	size := util.BytesToUint32(data[4:8])
+	offset := binary.BigEndian.Uint32(data[0:4])
+	size := binary.BigEndian.Uint32(data[4:8])
 	return &NeedleValue{Key: Key(key), Offset: offset, Size: size}, true
 }
 
@@ -98,9 +98,9 @@ func (m *LevelDbNeedleMap) Put(key uint64, offset uint32, size uint32) error {
 func levelDbWrite(db *leveldb.DB,
 	key uint64, offset uint32, size uint32) error {
 	bytes := make([]byte, 16)
-	util.Uint64toBytes(bytes[0:8], key)
-	util.Uint32toBytes(bytes[8:12], offset)
-	util.Uint32toBytes(bytes[12:16], size)
+	binary.BigEndian.PutUint64(bytes[0:8], key)
+	binary.BigEndian.PutUint32(bytes[8:12], offset)
+	binary.BigEndian.PutUint32(bytes[12:16], size)
 	if err := db.Put(bytes[0:8], bytes[8:16], nil); err != nil {
 		return fmt.Errorf("failed to write leveldb: %v", err)
 	}
@@ -108,7 +108,7 @@ func levelDbWrite(db *leveldb.DB,
 }
 func levelDbDelete(db *leveldb.DB, key uint64) error {
 	bytes := make([]byte, 8)
-	util.Uint64toBytes(bytes, key)
+	binary.BigEndian.PutUint64(bytes, key)
 	return db.Delete(bytes, nil)
 }
 
diff --git a/go/storage/needle_read_write.go b/go/storage/needle_read_write.go
index ccfe1d498..67adaa65f 100644
--- a/go/storage/needle_read_write.go
+++ b/go/storage/needle_read_write.go
@@ -1,13 +1,13 @@
 package storage
 
 import (
+	"encoding/binary"
 	"errors"
 	"fmt"
 	"io"
 	"os"
 
 	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 const (
@@ -43,11 +43,11 @@ func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
 	switch version {
 	case Version1:
 		header := make([]byte, NeedleHeaderSize)
-		util.Uint32toBytes(header[0:4], n.Cookie)
-		util.Uint64toBytes(header[4:12], n.Id)
+		binary.BigEndian.PutUint32(header[0:4], n.Cookie)
+		binary.BigEndian.PutUint64(header[4:12], n.Id)
 		n.Size = uint32(len(n.Data))
 		size = n.Size
-		util.Uint32toBytes(header[12:16], n.Size)
+		binary.BigEndian.PutUint32(header[12:16], n.Size)
 		if _, err = w.Write(header); err != nil {
 			return
 		}
@@ -55,13 +55,13 @@ func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
 			return
 		}
 		padding := NeedlePaddingSize - ((NeedleHeaderSize + n.Size + NeedleChecksumSize) % NeedlePaddingSize)
-		util.Uint32toBytes(header[0:NeedleChecksumSize], n.Checksum.Value())
+		binary.BigEndian.PutUint32(header[0:NeedleChecksumSize], n.Checksum.Value())
 		_, err = w.Write(header[0 : NeedleChecksumSize+padding])
 		return
 	case Version2:
 		header := make([]byte, NeedleHeaderSize)
-		util.Uint32toBytes(header[0:4], n.Cookie)
-		util.Uint64toBytes(header[4:12], n.Id)
+		binary.BigEndian.PutUint32(header[0:4], n.Cookie)
+		binary.BigEndian.PutUint64(header[4:12], n.Id)
 		n.DataSize, n.NameSize, n.MimeSize = uint32(len(n.Data)), uint8(len(n.Name)), uint8(len(n.Mime))
 		if n.DataSize > 0 {
 			n.Size = 4 + n.DataSize + 1
@@ -81,24 +81,24 @@ func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
 			n.Size = 0
 		}
 		size = n.DataSize
-		util.Uint32toBytes(header[12:16], n.Size)
+		binary.BigEndian.PutUint32(header[12:16], n.Size)
 		if _, err = w.Write(header); err != nil {
 			return
 		}
 		if n.DataSize > 0 {
-			util.Uint32toBytes(header[0:4], n.DataSize)
+			binary.BigEndian.PutUint32(header[0:4], n.DataSize)
 			if _, err = w.Write(header[0:4]); err != nil {
 				return
 			}
 			if _, err = w.Write(n.Data); err != nil {
 				return
 			}
-			util.Uint8toBytes(header[0:1], n.Flags)
+			header[0] = n.Flags
 			if _, err = w.Write(header[0:1]); err != nil {
 				return
 			}
 			if n.HasName() {
-				util.Uint8toBytes(header[0:1], n.NameSize)
+				header[0] = n.NameSize
 				if _, err = w.Write(header[0:1]); err != nil {
 					return
 				}
@@ -107,7 +107,7 @@ func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
 				}
 			}
 			if n.HasMime() {
-				util.Uint8toBytes(header[0:1], n.MimeSize)
+				header[0] = n.MimeSize
 				if _, err = w.Write(header[0:1]); err != nil {
 					return
 				}
@@ -116,7 +116,7 @@ func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
 				}
 			}
 			if n.HasLastModifiedDate() {
-				util.Uint64toBytes(header[0:8], n.LastModified)
+				binary.BigEndian.PutUint64(header[0:8], n.LastModified)
 				if _, err = w.Write(header[8-LastModifiedBytesLength : 8]); err != nil {
 					return
 				}
@@ -129,7 +129,7 @@ func (n *Needle) Append(w io.Writer, version Version) (size uint32, err error) {
 			}
 		}
 		padding := NeedlePaddingSize - ((NeedleHeaderSize + n.Size + NeedleChecksumSize) % NeedlePaddingSize)
-		util.Uint32toBytes(header[0:NeedleChecksumSize], n.Checksum.Value())
+		binary.BigEndian.PutUint32(header[0:NeedleChecksumSize], n.Checksum.Value())
 		_, err = w.Write(header[0 : NeedleChecksumSize+padding])
 		return n.DataSize, err
 	}
@@ -158,7 +158,7 @@ func (n *Needle) ReadData(r *os.File, offset int64, size uint32, version Version
 	case Version2:
 		n.readNeedleDataVersion2(bytes[NeedleHeaderSize : NeedleHeaderSize+int(n.Size)])
 	}
-	checksum := util.BytesToUint32(bytes[NeedleHeaderSize+size : NeedleHeaderSize+size+NeedleChecksumSize])
+	checksum := binary.BigEndian.Uint32(bytes[NeedleHeaderSize+size : NeedleHeaderSize+size+NeedleChecksumSize])
 	newChecksum := NewCRC(n.Data)
 	if checksum != newChecksum.Value() {
 		return errors.New("CRC error! Data On Disk Corrupted")
@@ -167,14 +167,14 @@ func (n *Needle) ReadData(r *os.File, offset int64, size uint32, version Version
 	return nil
 }
 func (n *Needle) ParseNeedleHeader(bytes []byte) {
-	n.Cookie = util.BytesToUint32(bytes[0:4])
-	n.Id = util.BytesToUint64(bytes[4:12])
-	n.Size = util.BytesToUint32(bytes[12:NeedleHeaderSize])
+	n.Cookie = binary.BigEndian.Uint32(bytes[0:4])
+	n.Id = binary.BigEndian.Uint64(bytes[4:12])
+	n.Size = binary.BigEndian.Uint32(bytes[12:NeedleHeaderSize])
 }
 func (n *Needle) readNeedleDataVersion2(bytes []byte) {
 	index, lenBytes := 0, len(bytes)
 	if index < lenBytes {
-		n.DataSize = util.BytesToUint32(bytes[index : index+4])
+		n.DataSize = binary.BigEndian.Uint32(bytes[index : index+4])
 		index = index + 4
 		if int(n.DataSize)+index > lenBytes {
 			// this if clause is due to bug #87 and #93, fixed in v0.69
@@ -199,7 +199,7 @@ func (n *Needle) readNeedleDataVersion2(bytes []byte) {
 		index = index + int(n.MimeSize)
 	}
 	if index < lenBytes && n.HasLastModifiedDate() {
-		n.LastModified = util.BytesToUint64(bytes[index : index+LastModifiedBytesLength])
+		n.LastModified = uint64(bytes[index])<<32 | uint64(binary.BigEndian.Uint32(bytes[index+1:index+LastModifiedBytesLength]))
 		index = index + LastModifiedBytesLength
 	}
 	if index < lenBytes && n.HasTtl() {
diff --git a/go/storage/needle_test.go b/go/storage/needle_test.go
new file mode 100644
index 000000000..c05afda2f
--- /dev/null
+++ b/go/storage/needle_test.go
@@ -0,0 +1,45 @@
+package storage
+
+import "testing"
+
+func TestParseKeyHash(t *testing.T) {
+	testcases := []struct {
+		KeyHash string
+		ID      uint64
+		Cookie  uint32
+		Err     bool
+	}{
+		// normal
+		{"4ed4c8116e41", 0x4ed4, 0xc8116e41, false},
+		// cookie with leading zeros
+		{"4ed401116e41", 0x4ed4, 0x01116e41, false},
+		// odd length
+		{"ed400116e41", 0xed4, 0x00116e41, false},
+		// uint
+		{"fed4c8114ed4c811f0116e41", 0xfed4c8114ed4c811, 0xf0116e41, false},
+		// err: too short
+		{"4ed4c811", 0, 0, true},
+		// err: too long
+		{"4ed4c8114ed4c8114ed4c8111", 0, 0, true},
+		// err: invalid character
+		{"helloworld", 0, 0, true},
+	}
+
+	for _, tc := range testcases {
+		if id, cookie, err := ParseKeyHash(tc.KeyHash); err != nil && !tc.Err {
+			t.Fatalf("Parse %s error: %v", tc.KeyHash, err)
+		} else if err == nil && tc.Err {
+			t.Fatalf("Parse %s expected error got nil", tc.KeyHash)
+		} else if id != tc.ID || cookie != tc.Cookie {
+			t.Fatalf("Parse %s wrong result. Expected: (%d, %d) got: (%d, %d)", tc.KeyHash, tc.ID, tc.Cookie, id, cookie)
+		}
+	}
+}
+
+func BenchmarkParseKeyHash(b *testing.B) {
+	b.ReportAllocs()
+
+	for i := 0; i < b.N; i++ {
+		ParseKeyHash("4ed44ed44ed44ed4c8116e41")
+	}
+}
diff --git a/go/storage/volume_super_block.go b/go/storage/volume_super_block.go
index e37360075..76116090d 100644
--- a/go/storage/volume_super_block.go
+++ b/go/storage/volume_super_block.go
@@ -1,11 +1,11 @@
 package storage
 
 import (
+	"encoding/binary"
 	"fmt"
 	"os"
 
 	"github.com/chrislusf/seaweedfs/go/glog"
-	"github.com/chrislusf/seaweedfs/go/util"
 )
 
 const (
@@ -35,7 +35,7 @@ func (s *SuperBlock) Bytes() []byte {
 	header[0] = byte(s.version)
 	header[1] = s.ReplicaPlacement.Byte()
 	s.Ttl.ToBytes(header[2:4])
-	util.Uint16toBytes(header[4:6], s.CompactRevision)
+	binary.BigEndian.PutUint16(header[4:6], s.CompactRevision)
 	return header
 }
 
@@ -76,6 +76,6 @@ func ParseSuperBlock(header []byte) (superBlock SuperBlock, err error) {
 		err = fmt.Errorf("cannot read replica type: %s", err.Error())
 	}
 	superBlock.Ttl = LoadTTLFromBytes(header[2:4])
-	superBlock.CompactRevision = util.BytesToUint16(header[4:6])
+	superBlock.CompactRevision = binary.BigEndian.Uint16(header[4:6])
 	return
 }
diff --git a/go/util/bytes.go b/go/util/bytes.go
deleted file mode 100644
index dfa4ae665..000000000
--- a/go/util/bytes.go
+++ /dev/null
@@ -1,45 +0,0 @@
-package util
-
-// big endian
-
-func BytesToUint64(b []byte) (v uint64) {
-	length := uint(len(b))
-	for i := uint(0); i < length-1; i++ {
-		v += uint64(b[i])
-		v <<= 8
-	}
-	v += uint64(b[length-1])
-	return
-}
-func BytesToUint32(b []byte) (v uint32) {
-	length := uint(len(b))
-	for i := uint(0); i < length-1; i++ {
-		v += uint32(b[i])
-		v <<= 8
-	}
-	v += uint32(b[length-1])
-	return
-}
-func BytesToUint16(b []byte) (v uint16) {
-	v += uint16(b[0])
-	v <<= 8
-	v += uint16(b[1])
-	return
-}
-func Uint64toBytes(b []byte, v uint64) {
-	for i := uint(0); i < 8; i++ {
-		b[7-i] = byte(v >> (i * 8))
-	}
-}
-func Uint32toBytes(b []byte, v uint32) {
-	for i := uint(0); i < 4; i++ {
-		b[3-i] = byte(v >> (i * 8))
-	}
-}
-func Uint16toBytes(b []byte, v uint16) {
-	b[0] = byte(v >> 8)
-	b[1] = byte(v)
-}
-func Uint8toBytes(b []byte, v uint8) {
-	b[0] = byte(v)
-}