//随机数生成要用到的
const letterBytes = "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
const (
letterIdxBits = 6
letterIdxMask = 1<<letterIdxBits - 1
letterIdxMax = 63 / letterIdxBits
)
//domain check
func DomainCheck(domain string) bool {
var match bool
//支持以http://或者https://开头并且域名中间有/的情况
IsLine := "^((http://)|(https://))?([a-zA-Z0-9]([a-zA-Z0-9\\-]{0,61}[a-zA-Z0-9])?\\.)+[a-zA-Z]{2,6}(/)"
//支持以http://或者https://开头并且域名中间没有/的情况
NotLine := "^((http://)|(https://))?([a-zA-Z0-9]([a-zA-Z0-9\\-]{0,61}[a-zA-Z0-9])?\\.)+[a-zA-Z]{2,6}"
match, _ = regexp.MatchString(IsLine, domain)
if !match {
match, _ = regexp.MatchString(NotLine, domain)
}
return match
}
//推广id随机生成()
func RandStringBytesMaskImprSrc(n int) string {
var src = rand.NewSource(time.Now().UnixNano())
b := make([]byte, n)
for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
if remain == 0 {
cache, remain = src.Int63(), letterIdxMax
}
if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
b[i] = letterBytes[idx]
i--
}
cache >>= letterIdxBits
remain--
}
return string(b)
}
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