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// stringutil 包含有用于处理字符串的工具函数。
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package tools
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import (
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"crypto/md5"
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"encoding/hex"
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"github.com/gobuffalo/packr/v2"
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"golang.org/x/net/html/charset"
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"golang.org/x/text/encoding"
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"golang.org/x/text/encoding/unicode"
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"golang.org/x/text/transform"
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"io/ioutil"
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"net/http"
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"strings"
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)
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//获取URL的GET参数
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func GetUrlArg(r *http.Request,name string)string{
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var arg string
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values := r.URL.Query()
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arg=values.Get(name)
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return arg
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}
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// Reverse 将其实参字符串以符文为单位左右反转。
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func Reverse(s string) string {
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r := []rune(s)
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for i, j := 0, len(r)-1; i < len(r)/2; i, j = i+1, j-1 {
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r[i], r[j] = r[j], r[i]
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}
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return string(r)
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}
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//转换编码
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func Encoding(html string, ct string) string {
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e, name := DetermineEncoding(html)
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if name != "utf-8" {
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html = ConvertToStr(html, "gbk", "utf-8")
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e = unicode.UTF8
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}
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r := strings.NewReader(html)
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utf8Reader := transform.NewReader(r, e.NewDecoder())
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//将其他编码的reader转换为常用的utf8reader
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all, _ := ioutil.ReadAll(utf8Reader)
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return string(all)
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}
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func DetermineEncoding(html string) (encoding.Encoding, string) {
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e, name, _ := charset.DetermineEncoding([]byte(html), "")
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return e, name
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}
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//获取文件内容，可以打包到二进制
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func FileGetContent(file string) string {
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str := ""
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box := packr.NewBox("../static")
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content, err := box.FindString(file)
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if err != nil {
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return str
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}
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return content
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}
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//md5加密
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func Md5(src string)string{
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m:=md5.New()
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m.Write([]byte(src))
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res:=hex.EncodeToString(m.Sum(nil))
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return res
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}
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