86 lines
1.6 KiB
Go
86 lines
1.6 KiB
Go
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package x
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import (
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"math"
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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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// IsEmail determine whether it is email address
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func IsEmail(email string) (ok bool, err error) {
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p := `^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$`
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ok, err = regexp.MatchString(p, email)
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return
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}
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// IsBankCard determine whether it is bankcard number
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func IsBankCard(n int64) (ok bool, err error) {
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s := strconv.FormatInt(n, 10)
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var sum int
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var i int
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for i = 1; i < len(s); i++ {
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var now int
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now, _ = strconv.Atoi(string(s[len(s)-1-i]))
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if i%2 == 0 {
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sum += now
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continue
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}
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var _i int
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_i = now * 2
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sum += _i / 10
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sum += _i % 10
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}
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var v int
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v, _ = strconv.Atoi(string(s[len(s)-1]))
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if (sum+v)%10 == 0 {
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ok = true
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}
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return
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}
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// IsChineseID determine whether it is Chinese ID Card Number
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func IsChineseID(s string) (ok bool, err error) {
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if len(s) != 18 {
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return
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}
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var sum int
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var i int
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for i = 1; i < len(s); i++ {
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var now int
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now, err = strconv.Atoi(string(s[len(s)-1-i]))
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if err != nil {
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return
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}
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var w int
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w = int(math.Pow(2, float64(i+1-1))) % 11
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sum += now * w
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}
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v := (12 - (sum % 11)) % 11
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if v == 10 {
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if strings.ToLower(string(s[len(s)-1])) != "x" {
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return
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}
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ok = true
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return
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}
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if string(s[len(s)-1]) != strconv.Itoa(v) {
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return
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}
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ok = true
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return
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}
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// IsChineseWords determine whether it is Chinese words
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// Notice: NOT ALL
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func IsChineseWords(words string) (ok bool, err error) {
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// every rune is chinese
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for _, c := range words {
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if !unicode.Is(unicode.Scripts["Han"], c) {
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return false, nil
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}
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}
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return true, nil
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}
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