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主题必须以字母或数字开头，可以包含连字符 (-)，并且长度不得超过35个字符
144 行
3.2 KiB
144 行
3.2 KiB
package common
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import (
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"bytes"
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"fmt"
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"github.com/makiuchi-d/gozxing"
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"github.com/makiuchi-d/gozxing/qrcode"
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goQrcode "github.com/skip2/go-qrcode"
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"golang.org/x/text/encoding/simplifiedchinese"
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"golang.org/x/text/transform"
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"image"
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"io/ioutil"
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"math/rand"
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"os"
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"os/exec"
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"runtime"
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"strconv"
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"time"
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)
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func Rand(min, max int) int {
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if min > max {
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panic("min: min cannot be greater than max")
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}
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if int31 := 1<<31 - 1; max > int31 {
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panic("max: max can not be greater than " + strconv.Itoa(int31))
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}
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if min == max {
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return min
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}
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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return r.Intn(max+1-min) + min
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}
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func GbkToUtf8(s []byte) ([]byte, error) {
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reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewDecoder())
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d, e := ioutil.ReadAll(reader)
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if e != nil {
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return nil, e
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}
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return d, nil
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}
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func Utf8ToGbk(s []byte) ([]byte, error) {
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reader := transform.NewReader(bytes.NewReader(s), simplifiedchinese.GBK.NewEncoder())
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d, e := ioutil.ReadAll(reader)
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if e != nil {
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return nil, e
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}
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return d, nil
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}
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func NewRandStr(length int) string {
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s := []string{
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"a", "b", "c", "d", "e", "f",
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"g", "h", "i", "j", "k", "l",
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"m", "n", "o", "p", "q", "r",
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"s", "t", "u", "v", "w", "x",
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"y", "z", "A", "B", "C", "D",
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"E", "F", "G", "H", "I", "J",
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"K", "L", "M", "N", "O", "P",
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"Q", "R", "S", "T", "U", "V",
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"W", "X", "Y", "Z",
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}
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str := ""
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for i := 1; i <= length; i++ {
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r := rand.New(rand.NewSource(time.Now().UnixNano()))
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str += s[r.Intn(len(s)-1)]
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}
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return str
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}
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func Substr(s string, start, end int) string {
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strRune := []rune(s)
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if start == -1 {
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return string(strRune[:end])
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}
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if end == -1 {
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return string(strRune[start:])
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}
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return string(strRune[start:end])
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}
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func IsDir(path string) bool {
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s, err := os.Stat(path)
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if err != nil {
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return false
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}
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return s.IsDir()
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}
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func Exists(path string) bool {
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_, err := os.Stat(path)
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if err != nil {
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if os.IsExist(err) {
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return true
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}
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return false
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}
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return true
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}
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func OpenImage(qrPath string) {
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if runtime.GOOS == "windows" { //windows
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cmd := exec.Command("cmd", "/c", "rundll32.exe", "C:\\Windows\\System32\\shimgvw.dll,ImageView_FullscreenA", qrPath)
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_ = cmd.Start()
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//扫码后二维码自动删除，自动关闭照片查看器
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go func() {
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for {
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time.Sleep(time.Duration(1) * time.Second)
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if !Exists(qrPath) {
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_ = exec.Command("taskkill", "/F", "/T", "/PID", fmt.Sprint(cmd.Process.Pid)).Run()
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break
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}
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}
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}()
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} else if runtime.GOOS == "darwin" { //Macos
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cmd := exec.Command("open", qrPath)
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_ = cmd.Start()
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} else {
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//linux或者其他系统
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file, _ := os.Open(qrPath)
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img, _, _ := image.Decode(file)
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bmp, _ := gozxing.NewBinaryBitmapFromImage(img)
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qrReader := qrcode.NewQRCodeReader()
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res, _ := qrReader.Decode(bmp, nil)
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//输出控制台
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qr, _ := goQrcode.New(res.String(), goQrcode.High)
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fmt.Println(qr.ToSmallString(false))
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}
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}
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//指定位数随机数
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func RandomNumber(len int) string {
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var container string
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var str = "0123456789"
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b := bytes.NewBufferString(str)
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length := b.Len()
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rand.Seed(time.Now().UnixNano())
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for i := 0; i < len; i++ {
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container += string(str[rand.Intn(length)])
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}
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return container
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}
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