<?php
/*
 * Copyright 2014 Google Inc.
 *
 * 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
 *
 *     http://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.
 */

spl_autoload_register(
    function ($className) {
      $classPath = explode('_', $className);
      if ($classPath[0] != 'Google') {
        return;
      }
      // Drop 'Google', and maximum class file path depth in this project is 3.
      $classPath = array_slice($classPath, 1, 2);

      $filePath = dirname(__FILE__) . '/' . implode('/', $classPath) . '.php';
      if (file_exists($filePath)) {
        require_once($filePath);
      }
    }
);
