<?php
/**
* Class with static methods for loading classes and files
*
* PHP version 5
*
* LICENSE
*
* This source file is subject to BSD 3-Clause License that is bundled
* with this package in the file LICENSE and available at the URL
* https://raw.githubusercontent.com/pear/HTML_QuickForm2/trunk/docs/LICENSE
*
* @category HTML
* @package HTML_QuickForm2
* @author Alexey Borzov <avb@php.net>
* @author Bertrand Mansion <golgote@mamasam.com>
* @copyright 2006-2019 Alexey Borzov <avb@php.net>, Bertrand Mansion <golgote@mamasam.com>
* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
* @link https://pear.php.net/package/HTML_QuickForm2
*/
/**
* Exception classes for HTML_QuickForm2
*/
require_once 'HTML/QuickForm2/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>
* @license https://opensource.org/licenses/BSD-3-Clause BSD 3-Clause License
* @version Release: 2.1.0
* @link https://pear.php.net/package/HTML_QuickForm2
*/
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 $className Class name to load
* @param string $includeFile Name of the file (supposedly) containing the given class
* @param bool $autoload Whether we should try autoloading
*
* @throws HTML_QuickForm2_NotFoundException If the file either can't be
* loaded or doesn't contain the given class
*/
public static function loadClass($className, $includeFile = null, $autoload = false)
{
if (class_exists($className, $autoload) || interface_exists($className, $autoload)) {
return;
}
if (empty($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 $fileName file name
*
* @return bool
*/
public static function fileExists($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 $class Class name
*
* @return bool Whether class loaded successfully
*/
public static function autoload($class)
{
if (0 !== strpos($class, 'HTML_QuickForm2')) {
return false;
}
try {
@self::loadClass($class);
return true;
} catch (Exception $e) {
return false;
}
}
}
?>
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