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go-fly/tools/stringutil.go

40 lines
983 B

5 years ago
// stringutil 包含有用于处理字符串的工具函数。
package tools
import (
"golang.org/x/net/html/charset"
"golang.org/x/text/encoding"
"golang.org/x/text/encoding/unicode"
"golang.org/x/text/transform"
"io/ioutil"
"strings"
)
5 years ago
// Reverse 将其实参字符串以符文为单位左右反转。
func Reverse(s string) string {
r := []rune(s)
for i, j := 0, len(r)-1; i < len(r)/2; i, j = i+1, j-1 {
r[i], r[j] = r[j], r[i]
}
return string(r)
}
//转换编码
func Encoding(html string,ct string) string {
e,name:=DetermineEncoding(html)
if name!="utf-8"{
html=ConvertToStr(html,"gbk","utf-8")
e=unicode.UTF8
}
r := strings.NewReader(html)
utf8Reader := transform.NewReader(r, e.NewDecoder())
//将其他编码的reader转换为常用的utf8reader
all, _ := ioutil.ReadAll(utf8Reader)
return string(all)
}
func DetermineEncoding(html string) (encoding.Encoding,string) {
e, name, _ := charset.DetermineEncoding([]byte(html), "")
return e,name
}