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refactor: 把 GenId 和 Uniq 抽离到 uniq_helper 里面

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This commit is contained in:
tiglog 2023-10-18 11:25:39 +08:00
parent 9d7fea4d82
commit 3e5a9b3244
4 changed files with 142 additions and 116 deletions
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45
helper/str_helper.go
View File

@ -12,9 +12,6 @@ import (
"strings"
"time"
"unicode"
"git.hexq.cn/tiglog/golib/crypto/gmd5"
"github.com/rs/xid"
)
// 是否是字符串
@ -26,10 +23,10 @@ func IsString(v interface{}) bool {
// 随机字符串
func RandString(n int) string {
letterRunes := []rune("1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
rand.Seed(time.Now().UnixNano())
rd := rand.New(rand.NewSource(time.Now().UnixNano()))
b := make([]rune, n)
for i := range b {
b[i] = letterRunes[rand.Intn(len(letterRunes))]
b[i] = letterRunes[rd.Intn(len(letterRunes))]
}
return string(b)
}
@ -125,44 +122,6 @@ func Reverse(str string) string {
return string(runes[n:])
}
// 唯一字符串
// 返回字符串长度为 20
func GenId() string {
guid := xid.New()
return guid.String()
}
// 可变长度的唯一字符串
// 长度太短，可能就不唯一了
// 长度大于等于 16 为最佳
// 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
// 下唯一
func Uniq(l int) string {
if l <= 0 {
panic("wrong length param")
}
ret := GenId()
hl := len(ret)
if l < hl {
t, err := gmd5.EncryptString(ret)
if err != nil {
return ret[hl-l:]
}
return t[:l]
}
mhac_len := 6
pl := len(ret)
var hash string
for l > pl {
hash = GenId()
hash = hash[mhac_len:]
ret += hash
pl += len(hash)
}
// log.Println("ret=", ret, ", pl=", pl, ", l=", l)
return ret[0:l]
}
func GetCjkRange(code int) string {
var result string
if code >= 0x4E00 && code <= 0x9FFF {

73
helper/str_helper_test.go
View File

@ -46,79 +46,6 @@ func TestUcFirst(t *testing.T) {
gtest.Equal(t, "HelloWorld", r3)
}
func TestGenId(t *testing.T) {
s1 := helper.GenId()
s2 := helper.GenId()
s3 := helper.GenId()
s4 := helper.GenId()
fmt.Println("gen id: ", s4)
gtest.NotNil(t, s1)
gtest.NotNil(t, s2)
gtest.NotNil(t, s3)
gtest.NotNil(t, s4)
gtest.NotEqual(t, s1, s2)
gtest.NotEqual(t, s1, s3)
gtest.NotEqual(t, s1, s4)
// fmt.Println(s1)
// fmt.Println(s2)
// fmt.Println(s3)
// fmt.Println(s4)
}
func TestUniq(t *testing.T) {
s1 := helper.Uniq(1)
fmt.Println("s1=", s1)
gtest.True(t, 1 == len(s1))
s12 := helper.Uniq(6)
s13 := helper.Uniq(6)
s14 := helper.Uniq(6)
s15 := helper.Uniq(6)
fmt.Println("s12..15", s12, s13, s14, s15)
gtest.NotNil(t, s12)
gtest.NotNil(t, s13)
gtest.NotNil(t, s14)
gtest.NotNil(t, s15)
gtest.NotEqual(t, s12, s13)
gtest.NotEqual(t, s12, s14)
gtest.NotEqual(t, s12, s15)
s2 := helper.Uniq(16)
s3 := helper.Uniq(16)
s4 := helper.Uniq(16)
s5 := helper.Uniq(16)
gtest.NotNil(t, s2)
gtest.NotNil(t, s3)
gtest.NotNil(t, s4)
gtest.NotNil(t, s5)
gtest.NotEqual(t, s2, s3)
gtest.NotEqual(t, s2, s4)
gtest.NotEqual(t, s2, s5)
s6 := helper.Uniq(32)
fmt.Println("s6=", s6)
s7 := helper.Uniq(32)
s8 := helper.Uniq(32)
s9 := helper.Uniq(32)
gtest.NotNil(t, s6)
gtest.NotNil(t, s7)
gtest.NotNil(t, s8)
gtest.NotNil(t, s9)
// fmt.Println("s6789=", s6, s7, s8, s9)
s60 := helper.Uniq(64)
fmt.Println("s60=", s60)
s70 := helper.Uniq(64)
s80 := helper.Uniq(64)
s90 := helper.Uniq(64)
gtest.NotNil(t, s60)
gtest.NotNil(t, s70)
gtest.NotNil(t, s80)
gtest.NotNil(t, s90)
// fmt.Println(s60, s70, s80, s90)
}
func TestSnake(t *testing.T) {
s1 := "XxYy"
r1 := helper.SnakeString(s1)

51
helper/uniq_helper.go Normal file
View File

@ -0,0 +1,51 @@
//
// uniq_helper.go
// Copyright (C) 2023 tiglog <me@tiglog.com>
//
// Distributed under terms of the MIT license.
//
package helper
import (
"git.hexq.cn/tiglog/golib/crypto/gmd5"
"github.com/rs/xid"
)
// 唯一字符串
// 返回字符串长度为 20
func GenId() string {
guid := xid.New()
return guid.String()
}
// 可变长度的唯一字符串
// 长度太短，可能就不唯一了
// 长度大于等于 16 为最佳
// 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
// 下唯一
func Uniq(l int) string {
if l <= 0 {
panic("wrong length param")
}
ret := GenId()
hl := len(ret)
if l < hl {
t, err := gmd5.EncryptString(ret)
if err != nil {
return ret[hl-l:]
}
return t[:l]
}
mhac_len := 6
pl := len(ret)
var hash string
for l > pl {
hash = GenId()
hash = hash[mhac_len:]
ret += hash
pl += len(hash)
}
// log.Println("ret=", ret, ", pl=", pl, ", l=", l)
return ret[0:l]
}

89
helper/uniq_helper_test.go Normal file
View File

@ -0,0 +1,89 @@
//
// uniq_helper_test.go
// Copyright (C) 2023 tiglog <me@tiglog.com>
//
// Distributed under terms of the MIT license.
//
package helper_test
import (
"fmt"
"testing"
"git.hexq.cn/tiglog/golib/gtest"
"git.hexq.cn/tiglog/golib/helper"
)
func TestGenId(t *testing.T) {
s1 := helper.GenId()
s2 := helper.GenId()
s3 := helper.GenId()
s4 := helper.GenId()
fmt.Println("gen id: ", s4)
gtest.NotNil(t, s1)
gtest.NotNil(t, s2)
gtest.NotNil(t, s3)
gtest.NotNil(t, s4)
gtest.NotEqual(t, s1, s2)
gtest.NotEqual(t, s1, s3)
gtest.NotEqual(t, s1, s4)
// fmt.Println(s1)
// fmt.Println(s2)
// fmt.Println(s3)
// fmt.Println(s4)
}
func TestUniq(t *testing.T) {
s1 := helper.Uniq(1)
fmt.Println("s1=", s1)
gtest.True(t, 1 == len(s1))
s12 := helper.Uniq(6)
s13 := helper.Uniq(6)
s14 := helper.Uniq(6)
s15 := helper.Uniq(6)
fmt.Println("s12..15", s12, s13, s14, s15)
gtest.NotNil(t, s12)
gtest.NotNil(t, s13)
gtest.NotNil(t, s14)
gtest.NotNil(t, s15)
gtest.NotEqual(t, s12, s13)
gtest.NotEqual(t, s12, s14)
gtest.NotEqual(t, s12, s15)
s2 := helper.Uniq(16)
s3 := helper.Uniq(16)
s4 := helper.Uniq(16)
s5 := helper.Uniq(16)
gtest.NotNil(t, s2)
gtest.NotNil(t, s3)
gtest.NotNil(t, s4)
gtest.NotNil(t, s5)
gtest.NotEqual(t, s2, s3)
gtest.NotEqual(t, s2, s4)
gtest.NotEqual(t, s2, s5)
s6 := helper.Uniq(32)
fmt.Println("s6=", s6)
s7 := helper.Uniq(32)
s8 := helper.Uniq(32)
s9 := helper.Uniq(32)
gtest.NotNil(t, s6)
gtest.NotNil(t, s7)
gtest.NotNil(t, s8)
gtest.NotNil(t, s9)
// fmt.Println("s6789=", s6, s7, s8, s9)
s60 := helper.Uniq(64)
fmt.Println("s60=", s60)
s70 := helper.Uniq(64)
s80 := helper.Uniq(64)
s90 := helper.Uniq(64)
gtest.NotNil(t, s60)
gtest.NotNil(t, s70)
gtest.NotNil(t, s80)
gtest.NotNil(t, s90)
// fmt.Println(s60, s70, s80, s90)
}