feat: 去掉重复的方法

pkg/str/string.go

@@ -1,57 +1,9 @@
 package str
 
 import (
-	"crypto/md5"
-	"crypto/rand"
 	"fmt"
-	"io"
-	"log"
-	"strings"
-	"text/template"
-	"unicode/utf8"
 )
 
-// FirstElement 返回切片的第一个元素
-func FirstElement[T any](args []T) *T {
-	if len(args) > 0 {
-		return &args[0]
-	}
-	return nil
-}
-
-// RandomNumber 生成长度为 length 随机数字字符串
-func RandomNumber(length int) string {
-	table := [...]byte{'1', '2', '3', '4', '5', '6', '7', '8', '9', '0'}
-	b := make([]byte, length)
-	n, err := io.ReadAtLeast(rand.Reader, b, length)
-	if n != length {
-		log.Panicf("failed to generate random number: %v", err)
-	}
-	for i := 0; i < len(b); i++ {
-		b[i] = table[int(b[i])%len(table)]
-	}
-	return string(b)
-}
-
-// RandomString 生成长度为 length 的随机字符串
-func RandomString(length int) string {
-	b := make([]byte, length)
-	_, err := rand.Read(b)
-	if err != nil {
-		log.Panicf("failed to generate random string: %v", err)
-	}
-	letters := "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
-	for i, v := range b {
-		b[i] = letters[v%byte(len(letters))]
-	}
-	return string(b)
-}
-
-// MD5 生成字符串的 MD5 值
-func MD5(str string) string {
-	return fmt.Sprintf("%x", md5.Sum([]byte(str)))
-}
-
 // FormatBytes 格式化bytes
 func FormatBytes(size float64) string {
 	units := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"}
@@ -63,25 +15,3 @@ func FormatBytes(size float64) string {
 
 	return fmt.Sprintf("%.2f %s", size, units[i])
 }
-
-// Cut 裁剪字符串
-func Cut(str, begin, end string) string {
-	bIndex := strings.Index(str, begin)
-	eIndex := strings.Index(str, end)
-	if bIndex == -1 || eIndex == -1 || bIndex > eIndex {
-		return ""
-	}
-
-	b := utf8.RuneCountInString(str[:bIndex]) + utf8.RuneCountInString(begin)
-	e := utf8.RuneCountInString(str[:eIndex])
-	if b > e {
-		return ""
-	}
-
-	return string([]rune(str)[b:e])
-}
-
-// Escape 转义字符串
-func Escape(str string) string {
-	return template.HTMLEscapeString(str)
-}

pkg/str/string_test.go

@@ -14,22 +14,6 @@ func TestStringHelperTestSuite(t *testing.T) {
 	suite.Run(t, &StringHelperTestSuite{})
 }
 
-func (s *StringHelperTestSuite) TestFirstElement() {
-	s.Equal("HaoZi", *FirstElement([]string{"HaoZi"}))
-}
-
-func (s *StringHelperTestSuite) TestRandomNumber() {
-	s.Len(RandomNumber(10), 10)
-}
-
-func (s *StringHelperTestSuite) TestRandomString() {
-	s.Len(RandomString(10), 10)
-}
-
-func (s *StringHelperTestSuite) TestMD5() {
-	s.Equal("e10adc3949ba59abbe56e057f20f883e", MD5("123456"))
-}
-
 func (s *StringHelperTestSuite) TestFormatBytes() {
 	s.Equal("1.00 B", FormatBytes(1))
 	s.Equal("1.00 KB", FormatBytes(1024))
@@ -41,7 +25,3 @@ func (s *StringHelperTestSuite) TestFormatBytes() {
 	s.Equal("1.00 ZB", FormatBytes(1024*1024*1024*1024*1024*1024*1024))
 	s.Equal("1.00 YB", FormatBytes(1024*1024*1024*1024*1024*1024*1024*1024))
 }
-
-func (s *StringHelperTestSuite) TestCut() {
-	s.Equal("aoZ", Cut("HaoZi", "H", "i"))
-}