--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Loader/PluginLoader.php Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,484 @@
+<?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
+ * @subpackage PluginLoader
+ * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id: PluginLoader.php 22603 2010-07-17 00:02:10Z ramon $
+ */
+
+/** Zend_Loader_PluginLoader_Interface */
+require_once 'Zend/Loader/PluginLoader/Interface.php';
+
+/** Zend_Loader */
+require_once 'Zend/Loader.php';
+
+/**
+ * Generic plugin class loader
+ *
+ * @category Zend
+ * @package Zend_Loader
+ * @subpackage PluginLoader
+ * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Loader_PluginLoader implements Zend_Loader_PluginLoader_Interface
+{
+ /**
+ * Class map cache file
+ * @var string
+ */
+ protected static $_includeFileCache;
+
+ /**
+ * Instance loaded plugin paths
+ *
+ * @var array
+ */
+ protected $_loadedPluginPaths = array();
+
+ /**
+ * Instance loaded plugins
+ *
+ * @var array
+ */
+ protected $_loadedPlugins = array();
+
+ /**
+ * Instance registry property
+ *
+ * @var array
+ */
+ protected $_prefixToPaths = array();
+
+ /**
+ * Statically loaded plugin path mappings
+ *
+ * @var array
+ */
+ protected static $_staticLoadedPluginPaths = array();
+
+ /**
+ * Statically loaded plugins
+ *
+ * @var array
+ */
+ protected static $_staticLoadedPlugins = array();
+
+ /**
+ * Static registry property
+ *
+ * @var array
+ */
+ protected static $_staticPrefixToPaths = array();
+
+ /**
+ * Whether to use a statically named registry for loading plugins
+ *
+ * @var string|null
+ */
+ protected $_useStaticRegistry = null;
+
+ /**
+ * Constructor
+ *
+ * @param array $prefixToPaths
+ * @param string $staticRegistryName OPTIONAL
+ */
+ public function __construct(Array $prefixToPaths = array(), $staticRegistryName = null)
+ {
+ if (is_string($staticRegistryName) && !empty($staticRegistryName)) {
+ $this->_useStaticRegistry = $staticRegistryName;
+ if(!isset(self::$_staticPrefixToPaths[$staticRegistryName])) {
+ self::$_staticPrefixToPaths[$staticRegistryName] = array();
+ }
+ if(!isset(self::$_staticLoadedPlugins[$staticRegistryName])) {
+ self::$_staticLoadedPlugins[$staticRegistryName] = array();
+ }
+ }
+
+ foreach ($prefixToPaths as $prefix => $path) {
+ $this->addPrefixPath($prefix, $path);
+ }
+ }
+
+ /**
+ * Format prefix for internal use
+ *
+ * @param string $prefix
+ * @return string
+ */
+ protected function _formatPrefix($prefix)
+ {
+ if($prefix == "") {
+ return $prefix;
+ }
+
+ $last = strlen($prefix) - 1;
+ if ($prefix{$last} == '\\') {
+ return $prefix;
+ }
+
+ return rtrim($prefix, '_') . '_';
+ }
+
+ /**
+ * Add prefixed paths to the registry of paths
+ *
+ * @param string $prefix
+ * @param string $path
+ * @return Zend_Loader_PluginLoader
+ */
+ public function addPrefixPath($prefix, $path)
+ {
+ if (!is_string($prefix) || !is_string($path)) {
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception('Zend_Loader_PluginLoader::addPrefixPath() method only takes strings for prefix and path.');
+ }
+
+ $prefix = $this->_formatPrefix($prefix);
+ $path = rtrim($path, '/\\') . '/';
+
+ if ($this->_useStaticRegistry) {
+ self::$_staticPrefixToPaths[$this->_useStaticRegistry][$prefix][] = $path;
+ } else {
+ if (!isset($this->_prefixToPaths[$prefix])) {
+ $this->_prefixToPaths[$prefix] = array();
+ }
+ if (!in_array($path, $this->_prefixToPaths[$prefix])) {
+ $this->_prefixToPaths[$prefix][] = $path;
+ }
+ }
+ return $this;
+ }
+
+ /**
+ * Get path stack
+ *
+ * @param string $prefix
+ * @return false|array False if prefix does not exist, array otherwise
+ */
+ public function getPaths($prefix = null)
+ {
+ if ((null !== $prefix) && is_string($prefix)) {
+ $prefix = $this->_formatPrefix($prefix);
+ if ($this->_useStaticRegistry) {
+ if (isset(self::$_staticPrefixToPaths[$this->_useStaticRegistry][$prefix])) {
+ return self::$_staticPrefixToPaths[$this->_useStaticRegistry][$prefix];
+ }
+
+ return false;
+ }
+
+ if (isset($this->_prefixToPaths[$prefix])) {
+ return $this->_prefixToPaths[$prefix];
+ }
+
+ return false;
+ }
+
+ if ($this->_useStaticRegistry) {
+ return self::$_staticPrefixToPaths[$this->_useStaticRegistry];
+ }
+
+ return $this->_prefixToPaths;
+ }
+
+ /**
+ * Clear path stack
+ *
+ * @param string $prefix
+ * @return bool False only if $prefix does not exist
+ */
+ public function clearPaths($prefix = null)
+ {
+ if ((null !== $prefix) && is_string($prefix)) {
+ $prefix = $this->_formatPrefix($prefix);
+ if ($this->_useStaticRegistry) {
+ if (isset(self::$_staticPrefixToPaths[$this->_useStaticRegistry][$prefix])) {
+ unset(self::$_staticPrefixToPaths[$this->_useStaticRegistry][$prefix]);
+ return true;
+ }
+
+ return false;
+ }
+
+ if (isset($this->_prefixToPaths[$prefix])) {
+ unset($this->_prefixToPaths[$prefix]);
+ return true;
+ }
+
+ return false;
+ }
+
+ if ($this->_useStaticRegistry) {
+ self::$_staticPrefixToPaths[$this->_useStaticRegistry] = array();
+ } else {
+ $this->_prefixToPaths = array();
+ }
+
+ return true;
+ }
+
+ /**
+ * Remove a prefix (or prefixed-path) from the registry
+ *
+ * @param string $prefix
+ * @param string $path OPTIONAL
+ * @return Zend_Loader_PluginLoader
+ */
+ public function removePrefixPath($prefix, $path = null)
+ {
+ $prefix = $this->_formatPrefix($prefix);
+ if ($this->_useStaticRegistry) {
+ $registry =& self::$_staticPrefixToPaths[$this->_useStaticRegistry];
+ } else {
+ $registry =& $this->_prefixToPaths;
+ }
+
+ if (!isset($registry[$prefix])) {
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception('Prefix ' . $prefix . ' was not found in the PluginLoader.');
+ }
+
+ if ($path != null) {
+ $pos = array_search($path, $registry[$prefix]);
+ if (false === $pos) {
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception('Prefix ' . $prefix . ' / Path ' . $path . ' was not found in the PluginLoader.');
+ }
+ unset($registry[$prefix][$pos]);
+ } else {
+ unset($registry[$prefix]);
+ }
+
+ return $this;
+ }
+
+ /**
+ * Normalize plugin name
+ *
+ * @param string $name
+ * @return string
+ */
+ protected function _formatName($name)
+ {
+ return ucfirst((string) $name);
+ }
+
+ /**
+ * Whether or not a Plugin by a specific name is loaded
+ *
+ * @param string $name
+ * @return Zend_Loader_PluginLoader
+ */
+ public function isLoaded($name)
+ {
+ $name = $this->_formatName($name);
+ if ($this->_useStaticRegistry) {
+ return isset(self::$_staticLoadedPlugins[$this->_useStaticRegistry][$name]);
+ }
+
+ return isset($this->_loadedPlugins[$name]);
+ }
+
+ /**
+ * Return full class name for a named plugin
+ *
+ * @param string $name
+ * @return string|false False if class not found, class name otherwise
+ */
+ public function getClassName($name)
+ {
+ $name = $this->_formatName($name);
+ if ($this->_useStaticRegistry
+ && isset(self::$_staticLoadedPlugins[$this->_useStaticRegistry][$name])
+ ) {
+ return self::$_staticLoadedPlugins[$this->_useStaticRegistry][$name];
+ } elseif (isset($this->_loadedPlugins[$name])) {
+ return $this->_loadedPlugins[$name];
+ }
+
+ return false;
+ }
+
+ /**
+ * Get path to plugin class
+ *
+ * @param mixed $name
+ * @return string|false False if not found
+ */
+ public function getClassPath($name)
+ {
+ $name = $this->_formatName($name);
+ if ($this->_useStaticRegistry
+ && !empty(self::$_staticLoadedPluginPaths[$this->_useStaticRegistry][$name])
+ ) {
+ return self::$_staticLoadedPluginPaths[$this->_useStaticRegistry][$name];
+ } elseif (!empty($this->_loadedPluginPaths[$name])) {
+ return $this->_loadedPluginPaths[$name];
+ }
+
+ if ($this->isLoaded($name)) {
+ $class = $this->getClassName($name);
+ $r = new ReflectionClass($class);
+ $path = $r->getFileName();
+ if ($this->_useStaticRegistry) {
+ self::$_staticLoadedPluginPaths[$this->_useStaticRegistry][$name] = $path;
+ } else {
+ $this->_loadedPluginPaths[$name] = $path;
+ }
+ return $path;
+ }
+
+ return false;
+ }
+
+ /**
+ * Load a plugin via the name provided
+ *
+ * @param string $name
+ * @param bool $throwExceptions Whether or not to throw exceptions if the
+ * class is not resolved
+ * @return string|false Class name of loaded class; false if $throwExceptions
+ * if false and no class found
+ * @throws Zend_Loader_Exception if class not found
+ */
+ public function load($name, $throwExceptions = true)
+ {
+ $name = $this->_formatName($name);
+ if ($this->isLoaded($name)) {
+ return $this->getClassName($name);
+ }
+
+ if ($this->_useStaticRegistry) {
+ $registry = self::$_staticPrefixToPaths[$this->_useStaticRegistry];
+ } else {
+ $registry = $this->_prefixToPaths;
+ }
+
+ $registry = array_reverse($registry, true);
+ $found = false;
+ $classFile = str_replace('_', DIRECTORY_SEPARATOR, $name) . '.php';
+ $incFile = self::getIncludeFileCache();
+ foreach ($registry as $prefix => $paths) {
+ $className = $prefix . $name;
+
+ if (class_exists($className, false)) {
+ $found = true;
+ break;
+ }
+
+ $paths = array_reverse($paths, true);
+
+ foreach ($paths as $path) {
+ $loadFile = $path . $classFile;
+ if (Zend_Loader::isReadable($loadFile)) {
+ include_once $loadFile;
+ if (class_exists($className, false)) {
+ if (null !== $incFile) {
+ self::_appendIncFile($loadFile);
+ }
+ $found = true;
+ break 2;
+ }
+ }
+ }
+ }
+
+ if (!$found) {
+ if (!$throwExceptions) {
+ return false;
+ }
+
+ $message = "Plugin by name '$name' was not found in the registry; used paths:";
+ foreach ($registry as $prefix => $paths) {
+ $message .= "\n$prefix: " . implode(PATH_SEPARATOR, $paths);
+ }
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception($message);
+ }
+
+ if ($this->_useStaticRegistry) {
+ self::$_staticLoadedPlugins[$this->_useStaticRegistry][$name] = $className;
+ } else {
+ $this->_loadedPlugins[$name] = $className;
+ }
+ return $className;
+ }
+
+ /**
+ * Set path to class file cache
+ *
+ * Specify a path to a file that will add include_once statements for each
+ * plugin class loaded. This is an opt-in feature for performance purposes.
+ *
+ * @param string $file
+ * @return void
+ * @throws Zend_Loader_PluginLoader_Exception if file is not writeable or path does not exist
+ */
+ public static function setIncludeFileCache($file)
+ {
+ if (null === $file) {
+ self::$_includeFileCache = null;
+ return;
+ }
+
+ if (!file_exists($file) && !file_exists(dirname($file))) {
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception('Specified file does not exist and/or directory does not exist (' . $file . ')');
+ }
+ if (file_exists($file) && !is_writable($file)) {
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception('Specified file is not writeable (' . $file . ')');
+ }
+ if (!file_exists($file) && file_exists(dirname($file)) && !is_writable(dirname($file))) {
+ require_once 'Zend/Loader/PluginLoader/Exception.php';
+ throw new Zend_Loader_PluginLoader_Exception('Specified file is not writeable (' . $file . ')');
+ }
+
+ self::$_includeFileCache = $file;
+ }
+
+ /**
+ * Retrieve class file cache path
+ *
+ * @return string|null
+ */
+ public static function getIncludeFileCache()
+ {
+ return self::$_includeFileCache;
+ }
+
+ /**
+ * Append an include_once statement to the class file cache
+ *
+ * @param string $incFile
+ * @return void
+ */
+ protected static function _appendIncFile($incFile)
+ {
+ if (!file_exists(self::$_includeFileCache)) {
+ $file = '<?php';
+ } else {
+ $file = file_get_contents(self::$_includeFileCache);
+ }
+ if (!strstr($file, $incFile)) {
+ $file .= "\ninclude_once '$incFile';";
+ file_put_contents(self::$_includeFileCache, $file);
+ }
+ }
+}