gohessian/util.go at master · MenInBack/gohessian · GitHub

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package gohessian

import (
	"bytes"
	"encoding/binary"
	"fmt"
	"strings"
)

func PackInt8(v int8) (r []byte, err error) {
	buf := new(bytes.Buffer)
	err = binary.Write(buf, binary.BigEndian, v)
	if err != nil {
		return
	}
	r = buf.Bytes()
	return
}

//[10].pack('n').bytes => [0, 10]
func PackInt16(v int16) (r []byte, err error) {
	buf := new(bytes.Buffer)
	err = binary.Write(buf, binary.BigEndian, v)
	if err != nil {
		return
	}
	r = buf.Bytes()
	return
}

//[10].pack('n').bytes => [0, 10]
func PackUint16(v uint16) (r []byte, err error) {
	buf := new(bytes.Buffer)
	err = binary.Write(buf, binary.BigEndian, v)
	if err != nil {
		return
	}
	r = buf.Bytes()
	return
}

//[10].pack('N').bytes => [0, 0, 0, 10]
func PackInt32(v int32) (r []byte, err error) {
	buf := new(bytes.Buffer)
	err = binary.Write(buf, binary.BigEndian, v)
	if err != nil {
		return
	}
	r = buf.Bytes()
	return
}

//[10].pack('q>').bytes => [0, 0, 0, 0, 0, 0, 0, 10]
func PackInt64(v int64) (r []byte, err error) {
	buf := new(bytes.Buffer)
	err = binary.Write(buf, binary.BigEndian, v)
	if err != nil {
		return
	}
	r = buf.Bytes()
	return
}

//[10].pack('G').bytes => [64, 36, 0, 0, 0, 0, 0, 0]
func PackFloat64(v float64) (r []byte, err error) {
	buf := new(bytes.Buffer)
	err = binary.Write(buf, binary.BigEndian, v)
	if err != nil {
		return
	}
	r = buf.Bytes()
	return
}

//(0,2).unpack('n')
func UnpackInt16(b []byte) (pi int16, err error) {
	err = binary.Read(bytes.NewReader(b), binary.BigEndian, &pi)
	if err != nil {
		return
	}
	return
}

//(0,4).unpack('N')
func UnpackInt32(b []byte) (pi int32, err error) {
	err = binary.Read(bytes.NewReader(b), binary.BigEndian, &pi)
	if err != nil {
		return
	}
	return
}

//long (0,8).unpack('q>')
func UnpackInt64(b []byte) (pi int64, err error) {
	err = binary.Read(bytes.NewReader(b), binary.BigEndian, &pi)
	if err != nil {
		return
	}
	return
}

//Double (0,8).unpack('G)
func UnpackFloat64(b []byte) (rs float64, err error) {
	err = binary.Read(bytes.NewReader(b), binary.BigEndian, &rs)
	if err != nil {
		return
	}
	return
}

//将字节数组格式化成 hex
func SprintHex(b []byte) (rs string) {
	rs = fmt.Sprintf("[]byte{")
	for _, v := range b {
		rs += fmt.Sprintf("0x%02x,", v)
	}
	rs = strings.TrimSpace(rs)
	rs += fmt.Sprintf("}\n")
	return
}

// HostCheck make host conforms the HTTP request
func HostCheck(host string) string {
	index := strings.Index(host, "http://")
	if index != -1 {
		return host
	}
	return "http://" + host
}