309 lines
7.7 KiB
Go
309 lines
7.7 KiB
Go
//
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// str_helper.go
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// Copyright (C) 2022 tiglog <me@tiglog.com>
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//
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// Distributed under terms of the MIT license.
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//
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package helper
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import (
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"math/rand"
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"strings"
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"time"
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"unicode"
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"git.hexq.cn/tiglog/golib/crypto/gmd5"
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"github.com/rs/xid"
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)
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// 是否是字符串
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func IsString(v interface{}) bool {
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_, ok := v.(string)
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return ok
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}
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// 随机字符串
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func RandString(n int) string {
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letterRunes := []rune("1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
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rand.Seed(time.Now().UnixNano())
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b := make([]rune, n)
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for i := range b {
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b[i] = letterRunes[rand.Intn(len(letterRunes))]
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}
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return string(b)
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}
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// 首字母大写
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func UcFirst(str string) string {
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for _, v := range str {
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u := string(unicode.ToUpper(v))
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return u + str[len(u):]
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}
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return ""
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}
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// 首字母小写
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func LcFirst(str string) string {
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for _, v := range str {
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u := string(unicode.ToLower(v))
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return u + str[len(u):]
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}
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return ""
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}
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// 驼峰转蛇形, XxYy => xx_yy
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func SnakeString(str string) string {
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data := make([]byte, 0, len(str)*2)
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j := false
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num := len(str)
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for i := 0; i < num; i++ {
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d := str[i]
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if i > 0 && d >= 'A' && d <= 'Z' && j {
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data = append(data, '_')
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}
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if d != '_' {
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j = true
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}
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data = append(data, d)
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}
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return strings.ToLower(string(data[:]))
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}
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// 蛇形转驼峰, xx_yy => XxYy
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func CamelString(str string) string {
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data := make([]byte, 0, len(str))
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j := false
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k := false
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num := len(str) - 1
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for i := 0; i <= num; i++ {
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d := str[i]
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if k == false && d >= 'A' && d <= 'Z' {
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k = true
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}
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if d >= 'a' && d <= 'z' && (j || k == false) {
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d = d - 32
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j = false
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k = true
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}
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if k && d == '_' && num > i && str[i+1] >= 'a' && str[i+1] <= 'z' {
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j = true
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continue
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}
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data = append(data, d)
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}
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return string(data[:])
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}
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// 乱序字符串
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func Shuffle(str string) string {
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if str == "" {
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return str
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}
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runes := []rune(str)
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index := 0
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for i := len(runes) - 1; i > 0; i-- {
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index = rand.Intn(i + 1)
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if i != index {
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runes[i], runes[index] = runes[index], runes[i]
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}
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}
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return string(runes)
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}
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// 反序字符串
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func Reverse(str string) string {
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n := len(str)
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runes := make([]rune, n)
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for _, r := range str {
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n--
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runes[n] = r
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}
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return string(runes[n:])
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}
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// 唯一字符串
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// 返回字符串长度为 20
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func GenId() string {
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guid := xid.New()
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return guid.String()
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}
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// 可变长度的唯一字符串
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// 长度太短，可能就不唯一了
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// 长度大于等于 16 为最佳
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// 长度小于20时，为 GenId 的值 md5 后的前缀，因此，理论上前6位也能在大多数情况
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// 下唯一
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func Uniq(l int) string {
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if l <= 0 {
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panic("wrong length param")
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}
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ret := GenId()
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hl := len(ret)
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if l < hl {
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t, err := gmd5.EncryptString(ret)
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if err != nil {
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return ret[hl-l:]
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}
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return t[:l]
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}
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mhac_len := 6
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pl := len(ret)
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var hash string
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for l > pl {
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hash = GenId()
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hash = hash[mhac_len:]
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ret += hash
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pl += len(hash)
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}
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// log.Println("ret=", ret, ", pl=", pl, ", l=", l)
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return ret[0:l]
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}
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func GetCjkRange(code int) string {
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var result string
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if code >= 0x4E00 && code <= 0x9FFF {
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result = "CJK"
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} else if code >= 0x3400 && code <= 0x4DBF {
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result = "EXT-A"
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} else if code >= 0x20000 && code <= 0x2A6DF {
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result = "EXT-B"
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} else if code >= 0x2A700 && code <= 0x2B739 {
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result = "EXT-C"
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} else if code >= 0x2B740 && code <= 0x2B81D {
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result = "EXT-D"
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} else if code >= 0x2B820 && code <= 0x2CEA1 {
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result = "EXT-E"
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} else if code >= 0x2CEB0 && code <= 0x2EBE0 {
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result = "EXT-F"
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} else if code >= 0x30000 && code <= 0x3134A {
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result = "EXT-G"
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} else if code >= 0x31350 && code <= 0x323AF {
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result = "EXT-H"
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} else if code >= 0x2EBF0 && code <= 0x2EE5D {
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result = "EXT-I"
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} else if code == 0x3007 {
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result = "零"
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} else if code >= 0x31C0 && code <= 0x31EF {
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result = "笔画"
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} else if code >= 0x2E80 && code <= 0x2EFF {
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result = "部首补充"
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} else if code >= 0xE000 && code <= 0xF8FF {
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result = "PUA"
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} else if code >= 0x2F00 && code <= 0x2FDF {
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result = "康熙部首"
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} else if code >= 0xF900 && code <= 0xFAD9 {
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result = "兼容区"
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} else if code >= 0xFE30 && code <= 0xFE4F {
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result = "兼容形式"
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} else if code >= 0x2F800 && code <= 0x2FA1D {
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result = "兼容表意文字增补"
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} else if code >= 0x3100 && code <= 0x312F {
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result = "注音"
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} else if code >= 0x17000 && code <= 0x187F7 {
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result = "西夏文"
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} else if code >= 0x18800 && code <= 0x18AFF {
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result = "西夏文部首"
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} else if code >= 0x18D00 && code <= 0x18D08 {
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result = "西夏文增补"
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} else if code >= 0x18B00 && code <= 0x18CFF {
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result = "契丹文"
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} else if code >= 0x0900 && code <= 0x097F {
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result = "梵文"
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} else if code >= 0x1B170 && code <= 0x1B2FF {
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result = "女书"
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} else if code >= 0x0F00 && code <= 0x0FFF {
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result = "藏文"
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} else if code >= 0x1800 && code <= 0x18AF {
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result = "蒙古语"
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} else if code >= 0x30A0 && code <= 0x30FF {
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result = "日文片假名"
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} else if code >= 0x31F0 && code <= 0x31FF {
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result = "片假名扩展"
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} else if code >= 0x3040 && code <= 0x309F {
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result = "日文平假名"
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} else if code >= 0x3000 && code <= 0x303F {
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result = "符号和标点符号"
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} else if code >= 0x2E00 && code <= 0x2E7F {
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result = "补充标点符号"
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} else if code >= 0x2200 && code <= 0x22FF {
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result = "数学运算符号"
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} else if code >= 0x2A00 && code <= 0x2AFF {
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result = "补充数学运算符"
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} else if code >= 0x2150 && code <= 0x218F {
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result = "数字形式符号"
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} else if code >= 0x2300 && code <= 0x23FF {
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result = "杂项技术符号"
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} else if code >= 0x27C0 && code <= 0x27EF {
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result = "杂项数学符号-A"
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} else if code >= 0x2980 && code <= 0x29FF {
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result = "杂项数学符号-B"
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} else if code >= 0x2190 && code <= 0x21FF {
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result = "箭头符号"
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} else if code >= 0x3190 && code <= 0x319F {
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result = "汉文训读"
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} else if code >= 0x3200 && code <= 0x32FF {
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result = "带圈字符及月份"
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} else if code >= 0x1F100 && code <= 0x1F1FF {
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result = "带圈字母数字补充"
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} else if code >= 0x1F200 && code <= 0x1F2FF {
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result = "带圈表意文字补充"
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} else if code >= 0x1D100 && code <= 0x1D1FF {
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result = "音乐符号"
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} else if code >= 0x1D360 && code <= 0x1D37F {
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result = "算筹"
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} else if code >= 0x1D300 && code <= 0x1D35F {
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result = "太玄经符号"
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} else if code >= 0x1F600 && code <= 0x1F64F {
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result = "表情符号"
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} else if code >= 0x2070 && code <= 0x209F {
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result = "上下标"
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} else if code >= 0x1D400 && code <= 0x1D7FF {
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result = "字母和数字符号"
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} else if code >= 0x25A0 && code <= 0x25FF {
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result = "几何形状"
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} else if code >= 0x1F780 && code <= 0x1F7FF {
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result = "几何图形扩展"
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} else if code >= 0x2630 && code <= 0x2637 {
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result = "八卦"
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} else if code >= 0x19904 && code <= 0x19967 {
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result = "易经六十四卦符号"
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} else if code >= 0x1FA00 && code <= 0x1FA6F {
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result = "象棋符号"
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} else if code >= 0x0370 && code <= 0x03FF {
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result = "希腊语和科普特语"
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} else if code >= 0x1F000 && code <= 0x1F02F {
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result = "麻将牌"
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} else if code >= 0x1F0A0 && code <= 0x1F0FF {
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result = "扑克牌"
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} else if code >= 0x20A0 && code <= 0x20CF {
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result = "货币符号"
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} else if code >= 0x1F680 && code <= 0x1F6FF {
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result = "交通和地图符号"
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} else if code >= 0x1F030 && code <= 0x1F09F {
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result = "多米诺骨牌"
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} else if code >= 0x1F300 && code <= 0x1F5FF {
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result = "杂项符号和象形文字"
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} else if code >= 0x2500 && code <= 0x257F {
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result = "方框绘制字符"
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} else if code >= 0x1F700 && code <= 0x1F77F {
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result = "炼金术符号"
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}
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return result
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}
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// 获取某个字的 unicode 值
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func Ord(in string) int {
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s := []rune(in)
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return int(s[0])
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}
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// 把 unicode 值转成字符串
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func Chr(code int) string {
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return string(rune(code))
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}
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