lepu-test-platform-web/node_modules/async-validator/es/rule/pattern.js

33 lines
1.2 KiB
JavaScript

import * as util from '../util';
/**
* Rule for validating a regular expression pattern.
*
* @param rule The validation rule.
* @param value The value of the field on the source object.
* @param source The source object being validated.
* @param errors An array of errors that this rule may add
* validation errors to.
* @param options The validation options.
* @param options.messages The validation messages.
*/
function pattern(rule, value, source, errors, options) {
if (rule.pattern) {
if (rule.pattern instanceof RegExp) {
// if a RegExp instance is passed, reset `lastIndex` in case its `global`
// flag is accidentally set to `true`, which in a validation scenario
// is not necessary and the result might be misleading
rule.pattern.lastIndex = 0;
if (!rule.pattern.test(value)) {
errors.push(util.format(options.messages.pattern.mismatch, rule.fullField, value, rule.pattern));
}
} else if (typeof rule.pattern === 'string') {
var _pattern = new RegExp(rule.pattern);
if (!_pattern.test(value)) {
errors.push(util.format(options.messages.pattern.mismatch, rule.fullField, value, rule.pattern));
}
}
}
}
export default pattern;