util/string.go

// Package util...
//
// Description : 字符串相关的工具
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2021-03-09 6:00 下午
package util

import (
	"crypto/md5"
	"encoding/hex"
	"math/rand"
	"strings"
	"time"

	"github.com/axgle/mahonia"
)

var (
	// LETTER_LIST 字母列表
	LETTER_LIST = []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",
	}
)

// stringOperate ...
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 15:09 2022/5/14
type stringOperate struct {
}

// GenRandom 获取随机长度的字符串
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 6:01 下午 2021/3/9
func (s *stringOperate) GenRandom(source string, length uint) string {
	if length == 0 {
		return ""
	}
	if len(source) == 0 {
		//字符串为空，默认字符源为如下(去除易混淆的i/l):
		source = "0123456789abcdefghjkmnopqrstuvwxyzABCDEFGHJKMNOPQRSTUVWXYZ"
	}
	strByte := []byte(source)
	var genStrByte = make([]byte, 0)
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for i := 0; i < int(length); i++ {
		genStrByte = append(genStrByte, strByte[r.Intn(len(strByte))])
	}
	return string(genStrByte)
}

// Md5 对字符串进行md5加密
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 6:01 下午 2021/3/9
func (s *stringOperate) Md5(str string) string {
	h := md5.New()
	_, _ = h.Write([]byte(str))
	return hex.EncodeToString(h.Sum(nil))
}

// Md5FromByte 从字节数组计算签名
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 2022/10/21 14:12:16
func (s *stringOperate) Md5FromByte(data []byte) string {
	h := md5.New()
	_, _ = h.Write(data)
	return hex.EncodeToString(h.Sum(nil))
}

// GenRandomMd5 生成随机md5
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 20:11 2022/7/12
func (s *stringOperate) GenRandomMd5() string {
	return s.Md5(s.GenRandom("", 16))
}

// SnakeCaseToCamel 蛇形字符串转换为驼峰
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 4:58 下午 2021/10/25
func (s *stringOperate) SnakeCaseToCamel(str string) string {
	if len(str) == 0 {
		return ""
	}
	builder := strings.Builder{}
	index := 0
	if str[0] >= 'a' && str[0] <= 'z' {
		builder.WriteByte(str[0] - ('a' - 'A'))
		index = 1
	}
	for i := index; i < len(str); i++ {
		if str[i] == '_' && i+1 < len(str) {
			if str[i+1] >= 'a' && str[i+1] <= 'z' {
				builder.WriteByte(str[i+1] - ('a' - 'A'))
				i++
				continue
			}
		}
		// 将ID转为大写
		if str[i] == 'd' && i-1 >= 0 && (str[i-1] == 'i' || str[i-1] == 'I') && (i+1 == len(str) || i+1 < len(str) && str[i+1] == '_') {
			builder.WriteByte('d' - ('a' - 'A'))
			continue
		}
		builder.WriteByte(str[i])
	}
	return builder.String()
}

// Convert 字符串编码转换
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 14:38 2022/7/9
func (s *stringOperate) Convert(str string, sourceCode string, targetCode string) string {
	sourceCoder := mahonia.NewDecoder(sourceCode)
	sourceResult := sourceCoder.ConvertString(str)
	targetCoder := mahonia.NewDecoder(targetCode)
	_, cdata, _ := targetCoder.Translate([]byte(sourceResult), true)
	return string(cdata)
}

// RemoveDuplicates 对列表数据去重
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 21:12 2022/7/23
func (s *stringOperate) RemoveDuplicates(sourceList []string) []string {
	result := make([]string, 0)
	hasDeal := make(map[string]bool)
	if len(sourceList) == 0 {
		return result
	}
	for _, val := range sourceList {
		if _, exist := hasDeal[val]; exist {
			continue
		}
		result = append(result, val)
		hasDeal[val] = true
	}
	return result
}

// Map2Query map参数转换为url query
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 20:51 2022/10/10
func (s *stringOperate) Map2Query(data map[string]string) string {
	list := make([]string, 0)
	for k, v := range data {
		list = append(list, k+"="+v)
	}
	return strings.Join(list, "&")
}

// ClearChar 清理指定字符
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 16:53 2023/1/13
func (s *stringOperate) ClearChar(src string, charList ...string) string {
	if len(charList) == 0 {
		return src
	}
	for _, item := range charList {
		src = strings.ReplaceAll(src, item, "")
	}
	return src
}

// ReplaceChineseChar 替换常见的中文符号
//
// Author : go_developer@163.com<白茶清欢>
//
// Date : 16:59 2023/4/4
func (s *stringOperate) ReplaceChineseChar(str string) string {
	charTable := map[string]string{
		"（": "(",
		"）": ")",
		"：": ":",
		"，": ",",
		"。": ".",
		"【": "]",
		"】": "]",
	}
	for k, v := range charTable {
		str = strings.ReplaceAll(str, k, v)
	}
	return str
}