smart-provincial/utils/utils.go

// Copyright 2019 autocareai.com. All rights reserved.
// Use of this source code is governed by autocareai.com.

package utils

import (
	"math/rand"
	"regexp"
	"time"
	"unsafe"
)

// VerifyMobileFormat 手机号验证
func VerifyMobileFormat(phone string) bool {
	regular := "^((13[0-9])|(14[5,7])|(15[0-3,5-9])|(17[0,3,5-8])|(18[0-9])|166|198|199|(147))\\d{8}$"

	reg := regexp.MustCompile(regular)
	return reg.MatchString(phone)
}

// RankVCode 最小到最大值之间生成随机数
func RankVCode(min int, max int) int {
	rand.Seed(time.Now().UnixNano())
	return rand.Intn(max-min) + min
}

// StrToBytes 快读的string转byte
func StrToBytes(s string) []byte {
	x := (*[2]uintptr)(unsafe.Pointer(&s))
	h := [3]uintptr{x[0], x[1], x[1]}
	return *(*[]byte)(unsafe.Pointer(&h))
}

// StrToBytes 快速的byte转string
func BytesToStr(b []byte) string {
	return *(*string)(unsafe.Pointer(&b))
}

//根据length获取随机字符串
func RandomString(length int) string {
	str := "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
	bytes := []byte(str)
	result := []byte{}
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for i := 0; i < length; i++ {
		result = append(result, bytes[r.Intn(len(bytes))])
	}
	return string(result)
}