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binary.go
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binary.go
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package kbutils
import (
"encoding/binary"
"io"
"math"
)
const (
MaxVarintLen16 = binary.MaxVarintLen16
MaxVarintLen32 = binary.MaxVarintLen32
MaxVarintLen64 = binary.MaxVarintLen64
)
// GetUint16LE 获取u16 little endian
func GetUint16LE(b []byte) uint16 {
return binary.LittleEndian.Uint16(b)
}
// PutUint16LE 设置u16 little endian
func PutUint16LE(b []byte, v uint16) {
binary.LittleEndian.PutUint16(b, v)
}
// GetUint16BE 设获取u16 big endian
func GetUint16BE(b []byte) uint16 {
return binary.BigEndian.Uint16(b)
}
// PutUint16BE 设置u16 big endian
func PutUint16BE(b []byte, v uint16) {
binary.BigEndian.PutUint16(b, v)
}
// GetUint24LE 获取u24 little endian
func GetUint24LE(b []byte) uint32 {
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16
}
func PutUint24LE(b []byte, v uint32) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
}
func GetUint24BE(b []byte) uint32 {
return uint32(b[2]) | uint32(b[1])<<8 | uint32(b[0])<<16
}
func PutUint24BE(b []byte, v uint32) {
b[0] = byte(v >> 16)
b[1] = byte(v >> 8)
b[2] = byte(v)
}
func GetUint32LE(b []byte) uint32 {
return binary.LittleEndian.Uint32(b)
}
func PutUint32LE(b []byte, v uint32) {
binary.LittleEndian.PutUint32(b, v)
}
func GetUint32BE(b []byte) uint32 {
return binary.BigEndian.Uint32(b)
}
func PutUint32BE(b []byte, v uint32) {
binary.BigEndian.PutUint32(b, v)
}
func GetUint40LE(b []byte) uint64 {
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32
}
func PutUint40LE(b []byte, v uint64) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
b[3] = byte(v >> 24)
b[4] = byte(v >> 32)
}
func GetUint40BE(b []byte) uint64 {
return uint64(b[4]) | uint64(b[3])<<8 | uint64(b[2])<<16 | uint64(b[1])<<24 | uint64(b[0])<<32
}
func PutUint40BE(b []byte, v uint64) {
b[0] = byte(v >> 32)
b[1] = byte(v >> 24)
b[2] = byte(v >> 16)
b[3] = byte(v >> 8)
b[4] = byte(v)
}
func GetUint48LE(b []byte) uint64 {
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40
}
func PutUint48LE(b []byte, v uint64) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
b[3] = byte(v >> 24)
b[4] = byte(v >> 32)
b[5] = byte(v >> 40)
}
func GetUint48BE(b []byte) uint64 {
return uint64(b[5]) | uint64(b[4])<<8 | uint64(b[3])<<16 | uint64(b[2])<<24 | uint64(b[1])<<32 | uint64(b[0])<<40
}
func PutUint48BE(b []byte, v uint64) {
b[0] = byte(v >> 40)
b[1] = byte(v >> 32)
b[2] = byte(v >> 24)
b[3] = byte(v >> 16)
b[4] = byte(v >> 8)
b[5] = byte(v)
}
func GetUint56LE(b []byte) uint64 {
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 | uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48
}
func PutUint56LE(b []byte, v uint64) {
b[0] = byte(v)
b[1] = byte(v >> 8)
b[2] = byte(v >> 16)
b[3] = byte(v >> 24)
b[4] = byte(v >> 32)
b[5] = byte(v >> 40)
b[6] = byte(v >> 48)
}
func GetUint56BE(b []byte) uint64 {
return uint64(b[6]) | uint64(b[5])<<8 | uint64(b[4])<<16 | uint64(b[3])<<24 | uint64(b[2])<<32 | uint64(b[1])<<40 | uint64(b[0])<<48
}
func PutUint56BE(b []byte, v uint64) {
b[0] = byte(v >> 48)
b[1] = byte(v >> 40)
b[2] = byte(v >> 32)
b[3] = byte(v >> 24)
b[4] = byte(v >> 16)
b[5] = byte(v >> 8)
b[6] = byte(v)
}
func GetUint64LE(b []byte) uint64 {
return binary.LittleEndian.Uint64(b)
}
func PutUint64LE(b []byte, v uint64) {
binary.LittleEndian.PutUint64(b, v)
}
func GetUint64BE(b []byte) uint64 {
return binary.BigEndian.Uint64(b)
}
func PutUint64BE(b []byte, v uint64) {
binary.BigEndian.PutUint64(b, v)
}
func GetFloat32BE(b []byte) float32 {
return math.Float32frombits(GetUint32BE(b))
}
func PutFloat32BE(b []byte, v float32) {
PutUint32BE(b, math.Float32bits(v))
}
func GetFloat32LE(b []byte) float32 {
return math.Float32frombits(GetUint32LE(b))
}
func PutFloat32LE(b []byte, v float32) {
PutUint32LE(b, math.Float32bits(v))
}
func GetFloat64BE(b []byte) float64 {
return math.Float64frombits(GetUint64BE(b))
}
func PutFloat64BE(b []byte, v float64) {
PutUint64BE(b, math.Float64bits(v))
}
func GetFloat64LE(b []byte) float64 {
return math.Float64frombits(GetUint64LE(b))
}
func PutFloat64LE(b []byte, v float64) {
PutUint64LE(b, math.Float64bits(v))
}
func UvarintSize(x uint64) int {
i := 0
for x >= 0x80 {
x >>= 7
i++
}
return i + 1
}
func VarintSize(x int64) int {
ux := uint64(x) << 1
if x < 0 {
ux = ^ux
}
return UvarintSize(ux)
}
func GetUvarint(b []byte) (uint64, int) {
return binary.Uvarint(b)
}
func PutUvarint(b []byte, v uint64) int {
return binary.PutUvarint(b, v)
}
func GetVarint(b []byte) (int64, int) {
return binary.Varint(b)
}
func PutVarint(b []byte, v int64) int {
return binary.PutVarint(b, v)
}
func ReadUvarint(r io.ByteReader) (uint64, error) {
return binary.ReadUvarint(r)
}
func ReadVarint(r io.ByteReader) (int64, error) {
return binary.ReadVarint(r)
}