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str.go
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str.go
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package str
import (
"encoding/base64"
"regexp"
"strconv"
"strings"
"unicode"
)
var (
camelRe = regexp.MustCompile("(_)([a-zA-Z]+)")
snakeRe = regexp.MustCompile("([a-z0-9])([A-Z])")
)
func CamelCase(str string) string {
camel := camelRe.ReplaceAllString(str, " $2")
camel = strings.Title(camel)
camel = strings.Replace(camel, " ", "", -1)
return camel
}
func CamelCaseLowerFirst(str string) string {
camel := CamelCase(str)
for i, v := range camel {
return strings.Join([]string{string(unicode.ToLower(v)), camel[i+1:]}, "")
}
return camel
}
func SnakeCase(str string) string {
snake := snakeRe.ReplaceAllString(str, "${1}_${2}")
return strings.ToLower(snake)
}
func RemoveRepeat(arr []string) []string {
newArr := make([]string, 0, len(arr))
temp := map[string]struct{}{}
for _, item := range arr {
if _, ok := temp[item]; !ok {
// struct{}{} no memory usage
temp[item] = struct{}{}
newArr = append(newArr, item)
}
}
return newArr
}
func Str2Uint64(str string) (rp uint64) {
rp, _ = strconv.ParseUint(str, 10, 64)
return
}
func Str2Uint64Arr(str string) (rp []uint64) {
rp = make([]uint64, 0)
s := strings.TrimSpace(str)
if s == "" {
return
}
idArr := strings.Split(s, ",")
for _, v := range idArr {
rp = append(rp, Str2Uint64(v))
}
return
}
func Str2Int64(str string) (rp int64) {
rp, _ = strconv.ParseInt(str, 10, 64)
return
}
func Str2Int64Arr(str string) (rp []int64) {
rp = make([]int64, 0)
s := strings.TrimSpace(str)
if s == "" {
return
}
idArr := strings.Split(s, ",")
for _, v := range idArr {
rp = append(rp, Str2Int64(v))
}
return
}
func EncodeStr2Base64(str string) string {
return base64.StdEncoding.EncodeToString([]byte(str))
}
func DecodeStrFromBase64(str string) string {
decodeBytes, _ := base64.StdEncoding.DecodeString(str)
return string(decodeBytes)
}
func RuneIsChinese(r rune) bool {
if unicode.Is(unicode.Han, r) || (regexp.MustCompile("[\u3002\uff1b\uff0c\uff1a\u201c\u201d\uff08\uff09\u3001\uff1f\u300a\u300b]").MatchString(string(r))) {
return true
}
return false
}
func StrContainsChinese(str string) (exists bool) {
rs := []rune(str)
for _, r := range rs {
if RuneIsChinese(r) {
exists = true
return
}
}
return
}