<?php

/**

 * Licensed to the Apache Software Foundation (ASF) under one or more

 * contributor license agreements. See the NOTICE file distributed with

 * this work for additional information regarding copyright ownership.

 * The ASF licenses this file to You 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.

 *

 * @package log4php

 */

/**

 * Converts PHP configuration files to a PHP array.

 *

 * The file should only hold the PHP config array preceded by "return".

 *

 * Example PHP config file:

 * <code>

 * <?php

 * return array(

 *   'rootLogger' => array(

 *     'level' => 'info',

 *     'appenders' => array('default')

 *   ),

 *   'appenders' => array(

 *     'default' => array(

 *       'class' => 'LoggerAppenderEcho',

 *       'layout' => array(

 *        'class' => 'LoggerLayoutSimple'

 *        )

 *     )

 *   )

 * )

 * ?>

 * </code>

 *

 * @package log4php

 * @subpackage configurators

 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0

 * @version $Revision: 1343601 $

 * @since 2.2

 */

class LoggerConfigurationAdapterPHP implements LoggerConfigurationAdapter {

    public function convert($url) {

        if (!file_exists($url)) {

            throw new LoggerException("File [$url] does not exist.");

        }

        // Load the config file

        $data = @file_get_contents($url);

        if ($data === false) {

            $error = error_get_last();

            throw new LoggerException("Error loading config file: {$error['message']}");

        }

        $config = @eval('?>' . $data);

        if ($config === false) {

            $error = error_get_last();

            throw new LoggerException("Error parsing configuration: " . $error['message']);

        }

        if (empty($config)) {

            throw new LoggerException("Invalid configuration: empty configuration array.");

        }

        if (!is_array($config)) {

            throw new LoggerException("Invalid configuration: not an array.");

        }

        return $config;

    }

}