62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
package validator
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import (
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"regexp"
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)
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// Declare a regular expression for sanity checking the format of email addresses (we'll
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// use this later in the book). If you're interested, this regular expression pattern is
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// taken from https://html.spec.whatwg.org/#valid-e-mail-address. Note: if you're
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// reading this in PDF or EPUB format and cannot see the full pattern, please see the
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// note further down the page.
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var (
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EmailRX = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
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)
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type Validator struct {
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Errors map[string]string
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}
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func New() *Validator {
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return &Validator{Errors: make(map[string]string)}
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}
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func (v *Validator) Valid() bool {
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return len(v.Errors) == 0
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}
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func (v *Validator) AddError(key, message string) {
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if _, exists := v.Errors[key]; !exists {
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v.Errors[key] = message
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}
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}
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func (v *Validator) Check(ok bool, key, message string) {
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if !ok {
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v.AddError(key, message)
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}
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}
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func In(value string, list ...string) bool {
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for i := range list {
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if value == list[i] {
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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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func Matches(value string, rx *regexp.Regexp) bool {
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return rx.MatchString(value)
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}
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func Unique(values []string) bool {
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uniqueValues := make(map[string]bool)
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for _, value := range values {
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uniqueValues[value] = true
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}
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return len(values) == len(uniqueValues)
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}
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