readme

golang utils

import

go get github.com/farmer-simon/go-utils

String

• UUID: generate unique id

id := utils.UUID()

• DefaultString: return default value when string is empty

var s string
s = utils.DefaultString(s, "defaultValue")

• RandomString return random string

s:=utils.RandomString(15)

• Convert character encoding

s := "GBK 与 UTF-8 编码转换测试"
gbk, err := utils.Utf8ToGbk([]byte(s))
if err != nil {
    fmt.Println(err)
} else {
    fmt.Println(string(gbk))
}

utf8, err := utils.GbkToUtf8(gbk)
if err != nil {
    fmt.Println(err)
} else {
    fmt.Println(string(utf8))
}

Number

• Max: compare two number and return the max number

max := utils.Max(1, 2) // max is 2

• Min: compare two number and return the min number

min := utils.Min(1, 2) // min is 1

Json

s, err := utils.JsonEncode(map[string]interface{}{"name":"test"})
fmt.Println(s, err)
m := make(map[string]interface{})
decodeErr = utils.JsonDecode(s, &m)
fmt.Println(decodeErr, m)

Date

• GetTimeStr: return current time, eg:2019-12-30 22:00:00

now := utils.GetTimeStr()

• GetDateStr(): return current date, eg: 2019-12-30

day := utils.GetDateStr()

Encrypt

• Md5: return md5 encrypt string

s := utils.Md5("123456")

• Sha1: return hash encrypt string

s := utils.Sha1("123456")

Convert

• Str2Byte: convert string to byte

b := utils.Str2Byte("123")

• Byte2Str: convert byte to string

s := utils.Byte2Str([]byte("123"))

Array

• Implode: concat array with separator

arr := []int{1,2,3}
s := utils.Implode(arr, "-") // s is 1-2-3

• Explode: split string with separator

arr := utils.Explode("1-2-3", "-")
fmt.Println(arr.Items())

File

• PathExist: check file or directory exist

if utils.PathExist("/home") {
  fmt.Println("exist")
}

• Mkdir: create directory if not exist

utils.Mkdir("/var/log/app", true)

• RuntimeCaller: return code invoke trace, always use in panic/recover

fmt.Println(utils.RuntimeCaller())