<?php

namespace {
    /**
     * Class with static methods for loading classes and files 
     *
     * PHP version 5
     *
     * LICENSE:
     *
     * Copyright (c) 2006-2010, Alexey Borzov <avb@php.net>,
     *                          Bertrand Mansion <golgote@mamasam.com>
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     *
     *    * Redistributions of source code must retain the above copyright
     *      notice, this list of conditions and the following disclaimer.
     *    * Redistributions in binary form must reproduce the above copyright
     *      notice, this list of conditions and the following disclaimer in the
     *      documentation and/or other materials provided with the distribution.
     *    * The names of the authors may not be used to endorse or promote products
     *      derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
     * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     * @category   HTML
     * @package    HTML_QuickForm2
     * @author     Alexey Borzov <avb@php.net>
     * @author     Bertrand Mansion <golgote@mamasam.com>
     * @license    http://opensource.org/licenses/bsd-license.php New BSD License
     * @version    SVN: $Id: Loader.php 294057 2010-01-26 21:10:28Z avb $
     * @link       http://pear.php.net/package/HTML_QuickForm2
     */
    /**
     * Exception classes for HTML_QuickForm2
     */
    // require_once 'HTML/QuickForm2/Exception.php';
    require_once \dirname(__FILE__) . '/Exception.php';
    /**
     * Class with static methods for loading classes and files 
     *
     * @category   HTML
     * @package    HTML_QuickForm2
     * @author     Alexey Borzov <avb@php.net>
     * @author     Bertrand Mansion <golgote@mamasam.com>
     * @version    Release: @package_version@
     */
    class HTML_QuickForm2_Loader
    {
        /**
         * Tries to load a given class
         *
         * If no $includeFile was provided, $className will be used with underscores
         * replaced with path separators and '.php' extension appended
         *
         * @param    string  Class name to load
         * @param    string  Name of the file (supposedly) containing the given class
         * @throws   HTML_QuickForm2_NotFoundException   If the file either can't be
         *               loaded or doesn't contain the given class
         */
        public static function loadClass($className, $includeFile = null)
        {
            if (\class_exists($className, \false) || \interface_exists($className, \false)) {
                return \true;
            }
            if (empty($includeFile)) {
                $includeFile = \str_replace('_', \DIRECTORY_SEPARATOR, $className) . '.php';
            }
            // Do not silence the errors with @, parse errors will not be seen
            include $includeFile;
            // Still no class?
            if (!\class_exists($className, \false) && !\interface_exists($className, \false)) {
                if (!self::fileExists($includeFile)) {
                    throw new \HTML_QuickForm2_NotFoundException("File '{$includeFile}' was not found");
                } else {
                    throw new \HTML_QuickForm2_NotFoundException("Class '{$className}' was not found within file '{$includeFile}'");
                }
            }
        }
        /**
         * Checks whether the file exists in the include path
         *
         * @param    string  file name
         * @return   bool
         */
        public static function fileExists($fileName)
        {
            $fp = @\fopen($fileName, 'r', \true);
            if (\is_resource($fp)) {
                \fclose($fp);
                return \true;
            }
            return \false;
        }
        /**
         * Loading of HTML_QuickForm2_* classes suitable for SPL autoload mechanism
         *
         * This method will only try to load a class if its name starts with
         * HTML_QuickForm2. Register with the following:
         * <code>
         * spl_autoload_register(array('HTML_QuickForm2_Loader', 'autoload'));
         * </code>
         *
         * @param    string  Class name
         * @return   bool    Whether class loaded successfully
         */
        public static function autoload($class)
        {
            if (0 !== \strpos($class, 'HTML_QuickForm2')) {
                return \false;
            }
            try {
                @self::loadClass($class);
                return \true;
            } catch (\Exception $e) {
                return \false;
            }
        }
    }
}
