chushihua

node_modules/async-validator/es/rule/pattern.js

@@ -0,0 +1,33 @@
+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;