GO Utils

GO 常用工具函数

// 求两个时间戳(单位 秒)之间间隔的自然天数
//
// 2022-07-04 00:00 2022-07-05 xx:xx => 1
// 2022-07-04 00:00 2022-07-04 xx:xx => 0
func DiffIntervalNatureDays(t1, t2 int64) int64 {

	var (
		diffDays     int64
		SecondsOfDay int64 = 60 * 60 * 24
	)

	if t1 == t2 {
		return 0
	}

	if t1 > t2 {
		t1, t2 = t2, t1
	}

	secDiff := t2 - t1
	if secDiff > SecondsOfDay {
		tmpDays := secDiff / SecondsOfDay // int计算会舍去小数位
		t1 += tmpDays * SecondsOfDay
		diffDays += tmpDays
	}

	st := time.Unix(t1, 0)
	et := time.Unix(t2, 0)
	dateFormatTpl := "20060102"
	if st.Format(dateFormatTpl) != et.Format(dateFormatTpl) {
		diffDays += 1
	}

	return diffDays
}

// 求两个时间戳(单位 秒)之间的自然天数
//
// 2022-07-04 00:00 2022-07-05 xx:xx => 2
// 2022-07-04 00:00 2022-07-04 xx:xx => 1
func DiffNatureDays(t1, t2 int64) int64 {

	var (
		diffDays     int64 = 1
		SecondsOfDay int64 = 60 * 60 * 24
	)

	if t1 == t2 {
		return diffDays
	}

	if t1 > t2 {
		t1, t2 = t2, t1
	}

	secDiff := t2 - t1
	if secDiff >= SecondsOfDay {
		tmpDays := secDiff / SecondsOfDay // int计算会舍去小数位
		diffDays += tmpDays
	}

	return diffDays
}

import (
	"bytes"
	"golang.org/x/text/encoding/simplifiedchinese"
	"golang.org/x/text/transform"
	"io/ioutil"

)

//UTF82GBK : transform UTF8 rune into GBK byte array
func UTF82GBK(src string) ([]byte, error) {
	GB18030 := simplifiedchinese.All[0]
	return ioutil.ReadAll(transform.NewReader(bytes.NewReader([]byte(src)), GB18030.NewEncoder()))
}

//GBK2UTF8 : transform  GBK byte array into UTF8 string
func GBK2UTF8(src []byte) (string, error) {
	GB18030 := simplifiedchinese.All[0]
	bytes, err := ioutil.ReadAll(transform.NewReader(bytes.NewReader(src), GB18030.NewDecoder()))
	return string(bytes), err
}