golang hex sample

golang hex

package main

import (
  "encoding/hex"
  "fmt"
)

func main() {
	bs := make([]byte, 7)
	copy(bs[:], "0000003")
	fmt.Println("END : " + hex.EncodeToString(bs))
}

func GetString(data []byte) string {
	return string(data)
}

func GetHexString(data []byte) string {
	return hex.EncodeToString(data)
}

func IntegertoBytes(value int, lenth int) []byte {
	result := make([]byte, lenth)
	if lenth > 4 {
		binary.BigEndian.PutUint64(result, uint64(value))
	} else if lenth > 2 {
		binary.BigEndian.PutUint32(result, uint32(value))
	} else {
		binary.BigEndian.PutUint16(result, uint16(value))
	}
	return result
}

func StringtoBytes(value string, lenth int) []byte {
	result := make([]byte, lenth)
	copy(result[:], value)
	return result
}

func appendBytes(datas ...[]byte) []byte {
	result := datas[0]
	i := 1
	for i < len(datas) {
		result = append(result, datas[i]...)
		i++
	}
	return result
}