mirror of
https://github.com/duke-git/lancet.git
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343 lines
10 KiB
Go
343 lines
10 KiB
Go
// Copyright 2021 dudaodong@gmail.com. All rights reserved.
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// Use of this source code is governed by MIT license
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// Package validator implements some validate function for string.
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package validator
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import (
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"encoding/json"
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"net"
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"net/url"
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"reflect"
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"regexp"
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"strconv"
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"strings"
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"unicode"
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)
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var (
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alphaMatcher *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z]+$`)
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letterRegexMatcher *regexp.Regexp = regexp.MustCompile(`[a-zA-Z]`)
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intStrMatcher *regexp.Regexp = regexp.MustCompile(`^[\+-]?\d+$`)
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urlMatcher *regexp.Regexp = regexp.MustCompile(`^((ftp|http|https?):\/\/)?(\S+(:\S*)?@)?((([1-9]\d?|1\d\d|2[01]\d|22[0-3])(\.(1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.([0-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(([a-zA-Z0-9]+([-\.][a-zA-Z0-9]+)*)|((www\.)?))?(([a-z\x{00a1}-\x{ffff}0-9]+-?-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.([a-z\x{00a1}-\x{ffff}]{2,}))?))(:(\d{1,5}))?((\/|\?|#)[^\s]*)?$`)
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dnsMatcher *regexp.Regexp = regexp.MustCompile(`^[a-zA-Z]([a-zA-Z0-9\-]+[\.]?)*[a-zA-Z0-9]$`)
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emailMatcher *regexp.Regexp = regexp.MustCompile(`\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*`)
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chineseMobileMatcher *regexp.Regexp = regexp.MustCompile(`^1(?:3\d|4[4-9]|5[0-35-9]|6[67]|7[013-8]|8\d|9\d)\d{8}$`)
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chineseIdMatcher *regexp.Regexp = regexp.MustCompile(`^[1-9]\d{5}(18|19|20|21|22)\d{2}((0[1-9])|(1[0-2]))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$`)
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chineseMatcher *regexp.Regexp = regexp.MustCompile("[\u4e00-\u9fa5]")
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chinesePhoneMatcher *regexp.Regexp = regexp.MustCompile(`\d{3}-\d{8}|\d{4}-\d{7}`)
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creditCardMatcher *regexp.Regexp = regexp.MustCompile(`^(?:4[0-9]{12}(?:[0-9]{3})?|5[1-5][0-9]{14}|(222[1-9]|22[3-9][0-9]|2[3-6][0-9]{2}|27[01][0-9]|2720)[0-9]{12}|6(?:011|5[0-9][0-9])[0-9]{12}|3[47][0-9]{13}|3(?:0[0-5]|[68][0-9])[0-9]{11}|(?:2131|1800|35\\d{3})\\d{11}|6[27][0-9]{14})$`)
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base64Matcher *regexp.Regexp = regexp.MustCompile(`^(?:[A-Za-z0-9+\\/]{4})*(?:[A-Za-z0-9+\\/]{2}==|[A-Za-z0-9+\\/]{3}=|[A-Za-z0-9+\\/]{4})$`)
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)
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// IsAlpha checks if the string contains only letters (a-zA-Z).
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// Play: https://go.dev/play/p/7Q5sGOz2izQ
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func IsAlpha(str string) bool {
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return alphaMatcher.MatchString(str)
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}
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// IsAllUpper check if the string is all upper case letters A-Z.
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// Play: https://go.dev/play/p/ZHctgeK1n4Z
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func IsAllUpper(str string) bool {
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for _, r := range str {
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if !unicode.IsUpper(r) {
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return false
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}
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}
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return str != ""
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}
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// IsAllLower check if the string is all lower case letters a-z.
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// Play: https://go.dev/play/p/GjqCnOfV6cM
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func IsAllLower(str string) bool {
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for _, r := range str {
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if !unicode.IsLower(r) {
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return false
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}
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}
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return str != ""
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}
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// ContainUpper check if the string contain at least one upper case letter A-Z.
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// Play: https://go.dev/play/p/CmWeBEk27-z
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func ContainUpper(str string) bool {
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for _, r := range str {
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if unicode.IsUpper(r) && unicode.IsLetter(r) {
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return true
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}
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}
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return false
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}
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// ContainLower check if the string contain at least one lower case letter a-z.
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// Play: https://go.dev/play/p/Srqi1ItvnAA
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func ContainLower(str string) bool {
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for _, r := range str {
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if unicode.IsLower(r) && unicode.IsLetter(r) {
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return true
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}
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}
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return false
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}
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// ContainLetter check if the string contain at least one letter.
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// Play: https://go.dev/play/p/lqFD04Yyewp
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func ContainLetter(str string) bool {
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return letterRegexMatcher.MatchString(str)
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}
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// IsJSON checks if the string is valid JSON.
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// Play: https://go.dev/play/p/sRS6c4K8jGk
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func IsJSON(str string) bool {
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var js json.RawMessage
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return json.Unmarshal([]byte(str), &js) == nil
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}
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// IsNumberStr check if the string can convert to a number.
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// Play: https://go.dev/play/p/LzaKocSV79u
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func IsNumberStr(s string) bool {
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return IsIntStr(s) || IsFloatStr(s)
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}
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// IsFloatStr check if the string can convert to a float.
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// Play: https://go.dev/play/p/LOYwS_Oyl7U
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func IsFloatStr(str string) bool {
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_, e := strconv.ParseFloat(str, 64)
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return e == nil
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}
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// IsIntStr check if the string can convert to a integer.
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// Play: https://go.dev/play/p/jQRtFv-a0Rk
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func IsIntStr(str string) bool {
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return intStrMatcher.MatchString(str)
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}
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// IsIp check if the string is a ip address.
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// Play: https://go.dev/play/p/FgcplDvmxoD
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func IsIp(ipstr string) bool {
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ip := net.ParseIP(ipstr)
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return ip != nil
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}
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// IsIpV4 check if the string is a ipv4 address.
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// Play: https://go.dev/play/p/zBGT99EjaIu
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func IsIpV4(ipstr string) bool {
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ip := net.ParseIP(ipstr)
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if ip == nil {
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return false
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}
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return strings.Contains(ipstr, ".")
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}
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// IsIpV6 check if the string is a ipv6 address.
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// Play: https://go.dev/play/p/AHA0r0AzIdC
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func IsIpV6(ipstr string) bool {
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ip := net.ParseIP(ipstr)
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if ip == nil {
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return false
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}
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return strings.Contains(ipstr, ":")
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}
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// IsPort check if the string is a valid net port.
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// Play:
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func IsPort(str string) bool {
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if i, err := strconv.ParseInt(str, 10, 64); err == nil && i > 0 && i < 65536 {
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return true
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}
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return false
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}
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// IsUrl check if the string is url.
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// Play: https://go.dev/play/p/pbJGa7F98Ka
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func IsUrl(str string) bool {
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if str == "" || len(str) >= 2083 || len(str) <= 3 || strings.HasPrefix(str, ".") {
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return false
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}
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u, err := url.Parse(str)
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if err != nil {
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return false
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}
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if strings.HasPrefix(u.Host, ".") {
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return false
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}
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if u.Host == "" && (u.Path != "" && !strings.Contains(u.Path, ".")) {
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return false
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}
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return urlMatcher.MatchString(str)
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}
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// IsDns check if the string is dns.
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// Play: https://go.dev/play/p/jlYApVLLGTZ
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func IsDns(dns string) bool {
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return dnsMatcher.MatchString(dns)
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}
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// IsEmail check if the string is a email address.
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// Play: https://go.dev/play/p/Os9VaFlT33G
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func IsEmail(email string) bool {
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return emailMatcher.MatchString(email)
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}
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// IsChineseMobile check if the string is chinese mobile number.
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// Play: https://go.dev/play/p/GPYUlGTOqe3
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func IsChineseMobile(mobileNum string) bool {
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return chineseMobileMatcher.MatchString(mobileNum)
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}
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// IsChineseIdNum check if the string is chinese id card.
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// Play: https://go.dev/play/p/d8EWhl2UGDF
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func IsChineseIdNum(id string) bool {
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return chineseIdMatcher.MatchString(id)
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}
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// ContainChinese check if the string contain mandarin chinese.
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// Play: https://go.dev/play/p/7DpU0uElYeM
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func ContainChinese(s string) bool {
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return chineseMatcher.MatchString(s)
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}
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// IsChinesePhone check if the string is chinese phone number.
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// Valid chinese phone is xxx-xxxxxxxx or xxxx-xxxxxxx.
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// Play: https://go.dev/play/p/RUD_-7YZJ3I
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func IsChinesePhone(phone string) bool {
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return chinesePhoneMatcher.MatchString(phone)
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}
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// IsCreditCard check if the string is credit card.
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// Play: https://go.dev/play/p/sNwwL6B0-v4
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func IsCreditCard(creditCart string) bool {
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return creditCardMatcher.MatchString(creditCart)
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}
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// IsBase64 check if the string is base64 string.
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// Play: https://go.dev/play/p/sWHEySAt6hl
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func IsBase64(base64 string) bool {
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return base64Matcher.MatchString(base64)
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}
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// IsEmptyString check if the string is empty.
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// Play: https://go.dev/play/p/dpzgUjFnBCX
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func IsEmptyString(str string) bool {
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return len(str) == 0
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}
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// IsRegexMatch check if the string match the regexp.
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// Play: https://go.dev/play/p/z_XeZo_litG
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func IsRegexMatch(str, regex string) bool {
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reg := regexp.MustCompile(regex)
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return reg.MatchString(str)
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}
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// IsStrongPassword check if the string is strong password, if len(password) is less than the length param, return false
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// Strong password: alpha(lower+upper) + number + special chars(!@#$%^&*()?><).
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// Play: https://go.dev/play/p/QHdVcSQ3uDg
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func IsStrongPassword(password string, length int) bool {
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if len(password) < length {
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return false
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}
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var num, lower, upper, special bool
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for _, r := range password {
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switch {
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case unicode.IsDigit(r):
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num = true
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case unicode.IsUpper(r):
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upper = true
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case unicode.IsLower(r):
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lower = true
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case unicode.IsSymbol(r), unicode.IsPunct(r):
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special = true
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}
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}
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return num && lower && upper && special
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}
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// IsWeakPassword check if the string is weak password
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// Weak password: only letter or only number or letter + number.
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// Play: https://go.dev/play/p/wqakscZH5gH
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func IsWeakPassword(password string) bool {
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var num, letter, special bool
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for _, r := range password {
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switch {
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case unicode.IsDigit(r):
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num = true
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case unicode.IsLetter(r):
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letter = true
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case unicode.IsSymbol(r), unicode.IsPunct(r):
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special = true
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}
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}
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return (num || letter) && !special
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}
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// IsZeroValue checks if value is a zero value.
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// Play: https://go.dev/play/p/UMrwaDCi_t4
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func IsZeroValue(value any) bool {
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if value == nil {
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return true
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}
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rv := reflect.ValueOf(value)
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if !rv.IsValid() {
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return true
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}
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switch rv.Kind() {
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case reflect.String:
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return rv.Len() == 0
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case reflect.Bool:
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return !rv.Bool()
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case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
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return rv.Int() == 0
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case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
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return rv.Uint() == 0
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case reflect.Float32, reflect.Float64:
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return rv.Float() == 0
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case reflect.Ptr, reflect.Chan, reflect.Func, reflect.Interface, reflect.Slice, reflect.Map:
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return rv.IsNil()
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}
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return reflect.DeepEqual(rv.Interface(), reflect.Zero(rv.Type()).Interface())
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}
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// IsGBK check if data encoding is gbk
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// Note: this function is implemented by whether double bytes fall within the encoding range of gbk,
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// while each byte of utf-8 encoding format falls within the encoding range of gbk.
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// Therefore, utf8.valid() should be called first to check whether it is not utf-8 encoding,
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// and then call IsGBK() to check gbk encoding. like below
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/**
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data := []byte("你好")
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if utf8.Valid(data) {
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fmt.Println("data encoding is utf-8")
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}else if(IsGBK(data)) {
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fmt.Println("data encoding is GBK")
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}
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fmt.Println("data encoding is unknown")
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**/
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// Play: https://go.dev/play/p/E2nt3unlmzP
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func IsGBK(data []byte) bool {
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i := 0
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for i < len(data) {
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if data[i] <= 0xff {
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i++
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continue
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} else {
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if data[i] >= 0x81 &&
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data[i] <= 0xfe &&
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data[i+1] >= 0x40 &&
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data[i+1] <= 0xfe &&
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data[i+1] != 0xf7 {
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i += 2
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continue
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} else {
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return false
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}
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}
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}
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return true
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}
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