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string.go
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string.go
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package gosupport
import (
"math/rand"
"regexp"
"strconv"
"strings"
"time"
"unicode"
"unicode/utf8"
)
/*
url中追加参数
调用示例:gosupport.UrlDeal("nfangbian.com/fangan/index/?xyz=1#ab", "a=1&b=2")
*/
func UrlDeal(reqUrl string, otherGetParam string) string {
if otherGetParam == "" {
return reqUrl
}
ret := ""
suffix := ""
if index := strings.Index(reqUrl, "#"); index >= 0 {
ret = reqUrl[:index]
suffix = reqUrl[index:]
} else {
ret = reqUrl
}
if strings.ContainsRune(reqUrl, '?') {
ret += "&" + otherGetParam + suffix
} else {
ret += "?" + otherGetParam + suffix
}
return ret
}
/*
对特殊字符使用中划线替换
CreateAnchor("abc?你好?中=国123abc") 返回 abc-你好-中-国123abc
CreateAnchor("你好中国123abc")返回 你好中国123abc
CreateAnchor("你好中国 123 abc") 返回 你好中国-123-abc
CreateAnchor("how 你好 中国123a!bc#de") 返回 how-你好-中国123a-bc-de
*/
func CreateAnchor(str string) string {
var anchorName []rune
var futureDash = false
for _, r := range str {
switch {
case unicode.IsLetter(r) || unicode.IsNumber(r):
if futureDash && len(anchorName) > 0 {
anchorName = append(anchorName, '-')
}
futureDash = false
anchorName = append(anchorName, unicode.ToLower(r))
default:
futureDash = true
}
}
return string(anchorName)
}
//转为小驼峰格式: 空格的首字母转大写,如:hello world_abc厉害 转 helloWorld_abc厉害
func ToCamelCase(str string) string {
str = strings.TrimSpace(str)
if utf8.RuneCountInString(str) < 2 {
return str
}
var buff strings.Builder
var temp string
for _, r := range str {
c := string(r)
if c != " " {
if temp == " " {
c = strings.ToUpper(c)
}
_, _ = buff.WriteString(c)
}
temp = c
}
return buff.String()
}
//转为snake格式: 全部转小写,空格转_,如:Abc_Xy z_eLsW中国 转 abc_xy_z_elsw中国
func ToSnakeCase(str string) string {
str = strings.TrimSpace(strings.ToLower(str))
return strings.Replace(str, " ", "_", -1)
}
func TrimSpace(str string) string {
return strings.TrimSpace(str)
}
func TrimSpace4StringSlice(data []string) []string {
ret := make([]string, 0, len(data))
for _, item := range data {
ret = append(ret, strings.TrimSpace(item))
}
return ret
}
func CommaSplitString(str string) []string {
ret := []string{}
if str == "" {
return ret
}
str = strings.ReplaceAll(str, ",", ",")
ret = strings.Split(str, ",")
return ret
}
// 下划线写法转为驼峰写法,如:img_key 转 ImgKey
func Case2Camel(name string) string {
name = strings.Replace(name, "_", " ", -1)
name = strings.Title(name)
return strings.Replace(name, " ", "", -1)
}
// 驼峰转下划线,如:ImgKeyXyz 转 Img_Key_Xyz
func Camel2Case(name string) string {
var wordBarrierRegex = regexp.MustCompile(`(\w)([A-Z])`)
sb := wordBarrierRegex.ReplaceAll(
[]byte(name),
[]byte(`${1}_${2}`),
)
return string(sb)
}
//首字母大写
func Ucfirst(str string) string {
for i, v := range str {
return string(unicode.ToUpper(v)) + str[i+1:]
}
return ""
}
//首字母小写
func Lcfirst(str string) string {
for i, v := range str {
return string(unicode.ToLower(v)) + str[i+1:]
}
return ""
}
// 首字母转大写
func Ucfirst4PHP(s string) string {
if len(s) == 0 {
return ""
}
data := []byte(s)
if data[0] >= 'a' && data[0] <= 'z' {
data[0] -= 32
}
return string(data)
}
// 首字母转小写
func Lcfirst4PHP(s string) string {
if len(s) == 0 {
return ""
}
data := []byte(s)
if data[0] >= 'A' && data[0] <= 'Z' {
data[0] += 32
}
return string(data)
}
//获取指定charset字符集下指定长度length的随机字符串
func GetRandStringWithCharset(length int, charset string) string {
seededRand := rand.New(rand.NewSource(time.Now().UnixNano()))
b := make([]byte, length)
for i := range b {
b[i] = charset[seededRand.Intn(len(charset))]
}
return string(b)
}
//获取指定长度的随机字符串
func GetRandString(length int) string {
return GetRandStringWithCharset(length, CharsetStr1)
}
// 去掉空格后,截取指定长度的字数,并打上...点字符
func GetSummary(s string, length int) string {
summary := strings.TrimSpace(s)
if utf8.RuneCountInString(summary) > length {
summary = Substr(summary, 0, length)
summary += "..."
}
return summary
}
func ToBool(s string) bool {
s = strings.ToLower(s)
return s == "true" || s == "yes" || s == "on" || s == "1"
}
func ToBoolOr(s string, defaultValue bool) bool {
b, err := strconv.ParseBool(s)
if err != nil {
return defaultValue
}
return b
}
//忽略大小写比较字符串
func EqualsIgnoreCase(a, b string) bool {
return a == b || strings.ToUpper(a) == strings.ToUpper(b)
}
// 隐藏手机号中间4位
func ReplaceStar4Phone(phone string) string {
return ReplaceStar4String(phone, 3, 4)
}
// 从开始位置替换为*号 start开始位置-从0开始计算,maxLen最多打星个数
func ReplaceStar4String(str string, start int, maxLen int) string {
b := []rune(str)
l := len(b)
if l == 0 || maxLen == 0 {
return str
}
if start == 0 {
if maxLen >= l {
return strings.Repeat("*", l)
} else {
return strings.Repeat("*", maxLen) + string(b[maxLen:])
}
}
if start >= l { // 开始位置超出长度
return str
}
var realMax = maxLen
if l-start < maxLen {
realMax = l - start
}
return string(b[:start]) + strings.Repeat("*", realMax) + string(b[realMax+start:])
}
// column列从1开始
func GetExcelLetter(column int) string {
result := ""
if column < 1 {
return result
}
var Letters = []string{"A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K",
"L", "M", "N", "O", "P", "Q", "R", "S", "T", "U",
"V", "W", "X", "Y", "Z"}
column = column - 1
result = Letters[column%26]
column = column / 26
for column > 0 {
column = column - 1
result = Letters[column%26] + result
column = column / 26
}
return result
}
// 反转字符串
func Strrev(str string) string {
runes := []rune(str)
for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
runes[i], runes[j] = runes[j], runes[i]
}
return string(runes)
}
// 获取字符串长度,类似php的strlen()函数
func Strlen(str string) int {
return len(str)
}
// 获取字符串长度,类似php的mb_strlen()函数
func MbStrlen(str string) int {
return utf8.RuneCountInString(str)
}
// 是否空串 或者 全是 空格
func IsBlank(str string) bool {
strLen := len(str)
if str == "" || strLen == 0 {
return true
}
for i := 0; i < strLen; i++ {
if unicode.IsSpace(rune(str[i])) == false {
return false
}
}
return true
}
func IsNotBlank(str string) bool {
return !IsBlank(str)
}
func IsString(v interface{}) bool {
if v == nil {
return false
}
switch v.(type) {
case string:
return true
default:
return false
}
}
func GetBigLetter() []string {
ret := make([]string, 0)
for i := 0; i < 26; i++ {
ret = append(ret, string(rune(65+i)))
}
return ret
}
func GetSmallLetter() []string {
ret := make([]string, 0)
for i := 0; i < 26; i++ {
ret = append(ret, string(rune(97+i)))
}
return ret
}
// GetExcelNo 下标从0开始,A-Z,AA-AZ,AAA-AAZ
func GetExcelNo(column int) string {
ret := ""
start := 65
i := column % 26
column = column / 26
if column >= 1 {
ret += GetExcelNo(column - 1)
}
return ret + string(rune(start+i))
}