openapi2apigeeck2/lib/resource_templates/jsc/Regex.js

A tool that converts openapi yaml file to Apigee API Proxy Bundle

/**
Copyright 2022 Google LLC

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

var checkRegex = function (value, pattern) { // eslint-disable-line
  var result = true
  // print('Original pattern: ' + pattern);

  // strip off any modifiers at the end of the regex, as JS doesn't understand those
  // we assume all strings are lowercase in the testing
  var flags = 'i'
  if (pattern[0] === '/') {
    // if the pattern doesn't end with /, we have flags
    if (pattern[pattern.length - 1] !== '/') {
      flags = pattern.substring(pattern.lastIndexOf('/') + 1, pattern.length)
    }
    // strip the slashes of the regexp string
    pattern = pattern.substring(1, pattern.lastIndexOf('/'))
  }
  // print('Parsed pattern: ' + pattern);
  // print('Parsed flags: ' + flags);

  // try to parse
  try {
    pattern = new RegExp(pattern, flags)
    result = pattern.test(value)
    // print('Regexp test result: ' + result);
  } catch (e) {
    result = false
  }
  return result
}