329 Zeilen
11 KiB
PHP
329 Zeilen
11 KiB
PHP
<?php
|
|
/**
|
|
* Zend Framework
|
|
*
|
|
* LICENSE
|
|
*
|
|
* This source file is subject to the new BSD license that is bundled
|
|
* with this package in the file LICENSE.txt.
|
|
* It is also available through the world-wide-web at this URL:
|
|
* http://framework.zend.com/license/new-bsd
|
|
* If you did not receive a copy of the license and are unable to
|
|
* obtain it through the world-wide-web, please send an email
|
|
* to license@zend.com so we can send you a copy immediately.
|
|
*
|
|
* @category Zend
|
|
* @package Zend_Loader
|
|
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
|
* @version $Id$
|
|
*/
|
|
|
|
/**
|
|
* Static methods for loading classes and files.
|
|
*
|
|
* @category Zend
|
|
* @package Zend_Loader
|
|
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
|
*/
|
|
class Zend_Loader
|
|
{
|
|
/**
|
|
* Loads a class from a PHP file. The filename must be formatted
|
|
* as "$class.php".
|
|
*
|
|
* If $dirs is a string or an array, it will search the directories
|
|
* in the order supplied, and attempt to load the first matching file.
|
|
*
|
|
* If $dirs is null, it will split the class name at underscores to
|
|
* generate a path hierarchy (e.g., "Zend_Example_Class" will map
|
|
* to "Zend/Example/Class.php").
|
|
*
|
|
* If the file was not found in the $dirs, or if no $dirs were specified,
|
|
* it will attempt to load it from PHP's include_path.
|
|
*
|
|
* @param string $class - The full class name of a Zend component.
|
|
* @param string|array $dirs - OPTIONAL Either a path or an array of paths
|
|
* to search.
|
|
* @return void
|
|
* @throws Zend_Exception
|
|
*/
|
|
public static function loadClass($class, $dirs = null)
|
|
{
|
|
if (class_exists($class, false) || interface_exists($class, false)) {
|
|
return;
|
|
}
|
|
|
|
if ((null !== $dirs) && !is_string($dirs) && !is_array($dirs)) {
|
|
require_once 'Zend/Exception.php';
|
|
throw new Zend_Exception('Directory argument must be a string or an array');
|
|
}
|
|
|
|
// Autodiscover the path from the class name
|
|
// Implementation is PHP namespace-aware, and based on
|
|
// Framework Interop Group reference implementation:
|
|
// http://groups.google.com/group/php-standards/web/psr-0-final-proposal
|
|
$className = ltrim($class, '\\');
|
|
$file = '';
|
|
$namespace = '';
|
|
if ($lastNsPos = strripos($className, '\\')) {
|
|
$namespace = substr($className, 0, $lastNsPos);
|
|
$className = substr($className, $lastNsPos + 1);
|
|
$file = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR;
|
|
}
|
|
$file .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php';
|
|
|
|
if (!empty($dirs)) {
|
|
// use the autodiscovered path
|
|
$dirPath = dirname($file);
|
|
if (is_string($dirs)) {
|
|
$dirs = explode(PATH_SEPARATOR, $dirs);
|
|
}
|
|
foreach ($dirs as $key => $dir) {
|
|
if ($dir == '.') {
|
|
$dirs[$key] = $dirPath;
|
|
} else {
|
|
$dir = rtrim($dir, '\\/');
|
|
$dirs[$key] = $dir . DIRECTORY_SEPARATOR . $dirPath;
|
|
}
|
|
}
|
|
$file = basename($file);
|
|
self::loadFile($file, $dirs, true);
|
|
} else {
|
|
self::loadFile($file, null, true);
|
|
}
|
|
|
|
if (!class_exists($class, false) && !interface_exists($class, false)) {
|
|
require_once 'Zend/Exception.php';
|
|
throw new Zend_Exception("File \"$file\" does not exist or class \"$class\" was not found in the file");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Loads a PHP file. This is a wrapper for PHP's include() function.
|
|
*
|
|
* $filename must be the complete filename, including any
|
|
* extension such as ".php". Note that a security check is performed that
|
|
* does not permit extended characters in the filename. This method is
|
|
* intended for loading Zend Framework files.
|
|
*
|
|
* If $dirs is a string or an array, it will search the directories
|
|
* in the order supplied, and attempt to load the first matching file.
|
|
*
|
|
* If the file was not found in the $dirs, or if no $dirs were specified,
|
|
* it will attempt to load it from PHP's include_path.
|
|
*
|
|
* If $once is TRUE, it will use include_once() instead of include().
|
|
*
|
|
* @param string $filename
|
|
* @param string|array $dirs - OPTIONAL either a path or array of paths
|
|
* to search.
|
|
* @param boolean $once
|
|
* @return boolean
|
|
* @throws Zend_Exception
|
|
*/
|
|
public static function loadFile($filename, $dirs = null, $once = false)
|
|
{
|
|
self::_securityCheck($filename);
|
|
|
|
/**
|
|
* Search in provided directories, as well as include_path
|
|
*/
|
|
$incPath = false;
|
|
if (!empty($dirs) && (is_array($dirs) || is_string($dirs))) {
|
|
if (is_array($dirs)) {
|
|
$dirs = implode(PATH_SEPARATOR, $dirs);
|
|
}
|
|
$incPath = get_include_path();
|
|
set_include_path($dirs . PATH_SEPARATOR . $incPath);
|
|
}
|
|
|
|
/**
|
|
* Try finding for the plain filename in the include_path.
|
|
*/
|
|
if ($once) {
|
|
include_once $filename;
|
|
} else {
|
|
include $filename;
|
|
}
|
|
|
|
/**
|
|
* If searching in directories, reset include_path
|
|
*/
|
|
if ($incPath) {
|
|
set_include_path($incPath);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns TRUE if the $filename is readable, or FALSE otherwise.
|
|
* This function uses the PHP include_path, where PHP's is_readable()
|
|
* does not.
|
|
*
|
|
* Note from ZF-2900:
|
|
* If you use custom error handler, please check whether return value
|
|
* from error_reporting() is zero or not.
|
|
* At mark of fopen() can not suppress warning if the handler is used.
|
|
*
|
|
* @param string $filename
|
|
* @return boolean
|
|
*/
|
|
public static function isReadable($filename)
|
|
{
|
|
if (is_readable($filename)) {
|
|
// Return early if the filename is readable without needing the
|
|
// include_path
|
|
return true;
|
|
}
|
|
|
|
if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN'
|
|
&& preg_match('/^[a-z]:/i', $filename)
|
|
) {
|
|
// If on windows, and path provided is clearly an absolute path,
|
|
// return false immediately
|
|
return false;
|
|
}
|
|
|
|
foreach (self::explodeIncludePath() as $path) {
|
|
if ($path == '.') {
|
|
if (is_readable($filename)) {
|
|
return true;
|
|
}
|
|
continue;
|
|
}
|
|
$file = $path . '/' . $filename;
|
|
if (is_readable($file)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Explode an include path into an array
|
|
*
|
|
* If no path provided, uses current include_path. Works around issues that
|
|
* occur when the path includes stream schemas.
|
|
*
|
|
* @param string|null $path
|
|
* @return array
|
|
*/
|
|
public static function explodeIncludePath($path = null)
|
|
{
|
|
if (null === $path) {
|
|
$path = get_include_path();
|
|
}
|
|
|
|
if (PATH_SEPARATOR == ':') {
|
|
// On *nix systems, include_paths which include paths with a stream
|
|
// schema cannot be safely explode'd, so we have to be a bit more
|
|
// intelligent in the approach.
|
|
$paths = preg_split('#:(?!//)#', $path);
|
|
} else {
|
|
$paths = explode(PATH_SEPARATOR, $path);
|
|
}
|
|
return $paths;
|
|
}
|
|
|
|
/**
|
|
* spl_autoload() suitable implementation for supporting class autoloading.
|
|
*
|
|
* Attach to spl_autoload() using the following:
|
|
* <code>
|
|
* spl_autoload_register(array('Zend_Loader', 'autoload'));
|
|
* </code>
|
|
*
|
|
* @deprecated Since 1.8.0
|
|
* @param string $class
|
|
* @return string|false Class name on success; false on failure
|
|
*/
|
|
public static function autoload($class)
|
|
{
|
|
trigger_error(__CLASS__ . '::' . __METHOD__ . ' is deprecated as of 1.8.0 and will be removed with 2.0.0; use Zend_Loader_Autoloader instead', E_USER_NOTICE);
|
|
try {
|
|
@self::loadClass($class);
|
|
return $class;
|
|
} catch (Exception $e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Register {@link autoload()} with spl_autoload()
|
|
*
|
|
* @deprecated Since 1.8.0
|
|
* @param string $class (optional)
|
|
* @param boolean $enabled (optional)
|
|
* @return void
|
|
* @throws Zend_Exception if spl_autoload() is not found
|
|
* or if the specified class does not have an autoload() method.
|
|
*/
|
|
public static function registerAutoload($class = 'Zend_Loader', $enabled = true)
|
|
{
|
|
trigger_error(__CLASS__ . '::' . __METHOD__ . ' is deprecated as of 1.8.0 and will be removed with 2.0.0; use Zend_Loader_Autoloader instead', E_USER_NOTICE);
|
|
require_once 'Zend/Loader/Autoloader.php';
|
|
$autoloader = Zend_Loader_Autoloader::getInstance();
|
|
$autoloader->setFallbackAutoloader(true);
|
|
|
|
if ('Zend_Loader' != $class) {
|
|
self::loadClass($class);
|
|
$methods = get_class_methods($class);
|
|
if (!in_array('autoload', (array) $methods)) {
|
|
require_once 'Zend/Exception.php';
|
|
throw new Zend_Exception("The class \"$class\" does not have an autoload() method");
|
|
}
|
|
|
|
$callback = array($class, 'autoload');
|
|
|
|
if ($enabled) {
|
|
$autoloader->pushAutoloader($callback);
|
|
} else {
|
|
$autoloader->removeAutoloader($callback);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Ensure that filename does not contain exploits
|
|
*
|
|
* @param string $filename
|
|
* @return void
|
|
* @throws Zend_Exception
|
|
*/
|
|
protected static function _securityCheck($filename)
|
|
{
|
|
/**
|
|
* Security check
|
|
*/
|
|
if (preg_match('/[^a-z0-9\\/\\\\_.:-]/i', $filename)) {
|
|
require_once 'Zend/Exception.php';
|
|
throw new Zend_Exception('Security check: Illegal character in filename');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Attempt to include() the file.
|
|
*
|
|
* include() is not prefixed with the @ operator because if
|
|
* the file is loaded and contains a parse error, execution
|
|
* will halt silently and this is difficult to debug.
|
|
*
|
|
* Always set display_errors = Off on production servers!
|
|
*
|
|
* @param string $filespec
|
|
* @param boolean $once
|
|
* @return boolean
|
|
* @deprecated Since 1.5.0; use loadFile() instead
|
|
*/
|
|
protected static function _includeFile($filespec, $once = false)
|
|
{
|
|
if ($once) {
|
|
return include_once $filespec;
|
|
} else {
|
|
return include $filespec ;
|
|
}
|
|
}
|
|
}
|