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Copy pathstringutils.go
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203 lines (178 loc) · 3.94 KB
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package stringutils
import (
"crypto/md5"
"crypto/rand"
"encoding/base64"
"fmt"
"io"
"math"
r "math/rand"
"reflect"
"regexp"
"strconv"
"strings"
"time"
"unicode/utf16"
)
func GetAfter(src string, find string) (string, bool) {
index := strings.Index(src, find)
if index > -1 && index+len(find) < len(src) {
return src[(index + len(find)):], true
}
return src, false
}
func GetBefore(src string, find string) (string, bool) {
index := strings.Index(src, find)
if index > -1 && index < len(src) {
return src[:index], true
}
return src, false
}
func UnicodeDecode(text string) string {
regex, err := regexp.Compile(`(\\u[a-fA-F0-9]{4})`)
if err != nil {
return text
}
text = regex.ReplaceAllStringFunc(text, func(match string) string {
_txt := match[2:]
char, err := strconv.ParseInt(_txt, 16, 32)
if err != nil {
return match
}
return string(rune(int(char)))
})
regex, err = regexp.Compile(`(&#[\d]{2,6})`)
if err != nil {
return text
}
text = regex.ReplaceAllStringFunc(text, func(match string) string {
_txt := match[2:]
char, err := strconv.ParseInt(_txt, 10, 32)
if err != nil {
return match
}
return string(rune(int(char)))
})
return text
}
func UnicodeEncode(str string) (js, html string) {
rs := []rune(str)
js = ""
html = ""
for _, r := range rs {
rint := int(r)
if rint < 128 {
js += string(r)
html += string(r)
} else {
js += `\u` + strconv.FormatInt(int64(rint), 16) // json
html += `&#` + strconv.Itoa(int(r)) + ";" // 网页
}
}
fmt.Printf("JSON: %s\n", js)
fmt.Printf("HTML: %s\n", html)
return
}
//比较是否在切片中存在，不区分大小写
func ExistSliceFold(srcSlice []string, elem string) bool {
for _, v := range srcSlice {
if strings.EqualFold(v, elem) {
return true
}
}
return false
}
//比较是否在切片中存在,区分大小写
func ExistSlice(srcSlice []string, elem string) bool {
for _, v := range srcSlice {
if v == elem {
return true
}
}
return false
}
//字符串转换uint16
func StringToUTF16(s string) []uint16 {
return utf16.Encode([]rune(s + "\x00"))
}
func Float64IsZero(s float64) bool {
if math.Abs(s) < 0.0001 {
return true
}
return false
}
//取子串
func Substr(s string, start, length int) string {
bt := []rune(s)
if start < 0 {
start = 0
}
if start > len(bt) {
start = start % len(bt)
}
var end int
if (start + length) > (len(bt) - 1) {
end = len(bt)
} else {
end = start + length
}
return string(bt[start:end])
}
//删除slice中的元素
func RemoveSliceElement(val interface{}, index int) interface{} {
if reflect.TypeOf(val).Kind() != reflect.Slice {
fmt.Println("val类型非slice")
return nil
}
s := reflect.ValueOf(val)
if index < 0 || index >= s.Len() {
fmt.Println("传入参数有误")
return nil
}
prev := s.Index(index)
for i := index + 1; i < s.Len(); i++ {
value := s.Index(i)
prev.Set(value)
prev = value
}
return s.Slice(0, s.Len()-1).Interface()
}
// RandomCreateBytes generate random []byte by specify chars.
func RandomCreateBytes(n int, alphabets ...byte) []byte {
const alphanum = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
var bytes = make([]byte, n)
var randby bool
if num, err := rand.Read(bytes); num != n || err != nil {
r.Seed(time.Now().UnixNano())
randby = true
}
for i, b := range bytes {
if len(alphabets) == 0 {
if randby {
bytes[i] = alphanum[r.Intn(len(alphanum))]
} else {
bytes[i] = alphanum[b%byte(len(alphanum))]
}
} else {
if randby {
bytes[i] = alphabets[r.Intn(len(alphabets))]
} else {
bytes[i] = alphabets[b%byte(len(alphabets))]
}
}
}
return bytes
}
func SumMd5(txtInput string) string {
h := md5.New()
io.WriteString(h, txtInput)
return fmt.Sprintf("%x", h.Sum(nil))
}
//生成Guid字串
func GetGuid() string {
b := make([]byte, 48)
if _, err := io.ReadFull(rand.Reader, b); err != nil {
return ""
}
return SumMd5(base64.URLEncoding.EncodeToString(b))
}