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'/' . $fileName); } } } } catch (UnexpectedValueException $e) { // Exception will be thrown if the path is not a directory. Ignore it. } } /** * Method to get the list of registered classes and their respective file paths for the autoloader. * * @return array The array of class => path values for the autoloader. * * @since 11.1 */ public static function getClassList() { return self::$classes; } /** * Method to get the list of deprecated class aliases. * * @return array An associative array with deprecated class alias data. * * @since 3.6.3 */ public static function getDeprecatedAliases() { return self::$deprecatedAliases; } /** * Method to get the list of registered namespaces. * * @param string $type Defines the type of namespace, can be prs0 or psr4. * * @return array The array of namespace => path values for the autoloader. * * @since 12.3 */ public static function getNamespaces($type = 'psr0') { if ($type !== 'psr0' && $type !== 'psr4') { throw new InvalidArgumentException('Type needs to be prs0 or psr4!'); } return self::$namespaces[$type]; } /** * Loads a class from specified directories. * * @param string $key The class name to look for (dot notation). * @param string $base Search this directory for the class. * * @return boolean True on success. * * @since 11.1 */ public static function import($key, $base = null) { // Only import the library if not already attempted. if (!isset(self::$imported[$key])) { // Setup some variables. $success = false; $parts = explode('.', $key); $class = array_pop($parts); $base = (!empty($base)) ? $base : __DIR__; $path = str_replace('.', DIRECTORY_SEPARATOR, $key); // Handle special case for helper classes. if ($class === 'helper') { $class = ucfirst(array_pop($parts)) . ucfirst($class); } // Standard class. else { $class = ucfirst($class); } // If we are importing a library from the Joomla namespace set the class to autoload. if (strpos($path, 'joomla') === 0) { // Since we are in the Joomla namespace prepend the classname with J. $class = 'J' . $class; // Only register the class for autoloading if the file exists. if (is_file($base . '/' . $path . '.php')) { self::$classes[strtolower($class)] = $base . '/' . $path . '.php'; $success = true; } } /* * If we are not importing a library from the Joomla namespace directly include the * file since we cannot assert the file/folder naming conventions. */ else { // If the file exists attempt to include it. if (is_file($base . '/' . $path . '.php')) { $success = (bool) include_once $base . '/' . $path . '.php'; } } // Add the import key to the memory cache container. self::$imported[$key] = $success; } return self::$imported[$key]; } /** * Load the file for a class. * * @param string $class The class to be loaded. * * @return boolean True on success * * @since 11.1 */ public static function load($class) { // Sanitize class name. $key = strtolower($class); // If the class already exists do nothing. if (class_exists($class, false)) { return true; } // If the class is registered include the file. if (isset(self::$classes[$key])) { $found = (bool) include_once self::$classes[$key]; if ($found) { self::loadAliasFor($class); } // If the class doesn't exists, we probably have a class alias available if (!class_exists($class, false)) { // Search the alias class, first none namespaced and then namespaced $original = array_search($class, self::$classAliases) ? : array_search('\\' . $class, self::$classAliases); // When we have an original and the class exists an alias should be created if ($original && class_exists($original, false)) { class_alias($original, $class); } } return true; } return false; } /** * Directly register a class to the autoload list. * * @param string $class The class name to register. * @param string $path Full path to the file that holds the class to register. * @param boolean $force True to overwrite the autoload path value for the class if it already exists. * * @return void * * @since 11.1 */ public static function register($class, $path, $force = true) { // When an alias exists, register it as well if (key_exists(strtolower($class), self::$classAliases)) { self::register(self::stripFirstBackslash(self::$classAliases[strtolower($class)]), $path, $force); } // Sanitize class name. $class = strtolower($class); // Only attempt to register the class if the name and file exist. if (!empty($class) && is_file($path)) { // Register the class with the autoloader if not already registered or the force flag is set. if ($force || empty(self::$classes[$class])) { self::$classes[$class] = $path; } } } /** * Register a class prefix with lookup path. This will allow developers to register library * packages with different class prefixes to the system autoloader. More than one lookup path * may be registered for the same class prefix, but if this method is called with the reset flag * set to true then any registered lookups for the given prefix will be overwritten with the current * lookup path. When loaded, prefix paths are searched in a "last in, first out" order. * * @param string $prefix The class prefix to register. * @param string $path Absolute file path to the library root where classes with the given prefix can be found. * @param boolean $reset True to reset the prefix with only the given lookup path. * @param boolean $prepend If true, push the path to the beginning of the prefix lookup paths array. * * @return void * * @throws RuntimeException * * @since 12.1 */ public static function registerPrefix($prefix, $path, $reset = false, $prepend = false) { // Verify the library path exists. if (!file_exists($path)) { $path = (str_replace(JPATH_ROOT, '', $path) == $path) ? basename($path) : str_replace(JPATH_ROOT, '', $path); throw new RuntimeException('Library path ' . $path . ' cannot be found.', 500); } // If the prefix is not yet registered or we have an explicit reset flag then set set the path. if ($reset || !isset(self::$prefixes[$prefix])) { self::$prefixes[$prefix] = array($path); } // Otherwise we want to simply add the path to the prefix. else { if ($prepend) { array_unshift(self::$prefixes[$prefix], $path); } else { self::$prefixes[$prefix][] = $path; } } } /** * Offers the ability for "just in time" usage of `class_alias()`. * You cannot overwrite an existing alias. * * @param string $alias The alias name to register. * @param string $original The original class to alias. * @param string|boolean $version The version in which the alias will no longer be present. * * @return boolean True if registration was successful. False if the alias already exists. * * @since 3.2 */ public static function registerAlias($alias, $original, $version = false) { // PHP is case insensitive so support all kind of alias combination $lowercasedAlias = strtolower($alias); if (!isset(self::$classAliases[$lowercasedAlias])) { self::$classAliases[$lowercasedAlias] = $original; $original = self::stripFirstBackslash($original); if (!isset(self::$classAliasesInverse[$original])) { self::$classAliasesInverse[$original] = array($lowercasedAlias); } else { self::$classAliasesInverse[$original][] = $lowercasedAlias; } // If given a version, log this alias as deprecated if ($version) { self::$deprecatedAliases[] = array('old' => $alias, 'new' => $original, 'version' => $version); } return true; } return false; } /** * Register a namespace to the autoloader. When loaded, namespace paths are searched in a "last in, first out" order. * * @param string $namespace A case sensitive Namespace to register. * @param string $path A case sensitive absolute file path to the library root where classes of the given namespace can be found. * @param boolean $reset True to reset the namespace with only the given lookup path. * @param boolean $prepend If true, push the path to the beginning of the namespace lookup paths array. * @param string $type Defines the type of namespace, can be prs0 or psr4. * * @return void * * @throws RuntimeException * * @note The default argument of $type will be changed in J4 to be 'psr4' * @since 12.3 */ public static function registerNamespace($namespace, $path, $reset = false, $prepend = false, $type = 'psr0') { if ($type !== 'psr0' && $type !== 'psr4') { throw new InvalidArgumentException('Type needs to be prs0 or psr4!'); } // Verify the library path exists. if (!file_exists($path)) { $path = (str_replace(JPATH_ROOT, '', $path) == $path) ? basename($path) : str_replace(JPATH_ROOT, '', $path); throw new RuntimeException('Library path ' . $path . ' cannot be found.', 500); } // Trim leading and trailing backslashes from namespace, allowing "\Parent\Child", "Parent\Child\" and "\Parent\Child\" to be treated the same way. $namespace = trim($namespace, '\\'); // If the namespace is not yet registered or we have an explicit reset flag then set the path. if ($reset || !isset(self::$namespaces[$type][$namespace])) { self::$namespaces[$type][$namespace] = array($path); } // Otherwise we want to simply add the path to the namespace. else { if ($prepend) { array_unshift(self::$namespaces[$type][$namespace], $path); } else { self::$namespaces[$type][$namespace][] = $path; } } } /** * Method to setup the autoloaders for the Joomla Platform. * Since the SPL autoloaders are called in a queue we will add our explicit * class-registration based loader first, then fall back on the autoloader based on conventions. * This will allow people to register a class in a specific location and override platform libraries * as was previously possible. * * @param boolean $enablePsr True to enable autoloading based on PSR-0. * @param boolean $enablePrefixes True to enable prefix based class loading (needed to auto load the Joomla core). * @param boolean $enableClasses True to enable class map based class loading (needed to auto load the Joomla core). * * @return void * * @since 12.3 */ public static function setup($enablePsr = true, $enablePrefixes = true, $enableClasses = true) { if ($enableClasses) { // Register the class map based autoloader. spl_autoload_register(array('JLoader', 'load')); } if ($enablePrefixes) { // Register the J prefix and base path for Joomla platform libraries. self::registerPrefix('J', JPATH_PLATFORM . '/joomla'); // Register the prefix autoloader. spl_autoload_register(array('JLoader', '_autoload')); } if ($enablePsr) { // Register the PSR based autoloader. spl_autoload_register(array('JLoader', 'loadByPsr0')); spl_autoload_register(array('JLoader', 'loadByPsr4')); spl_autoload_register(array('JLoader', 'loadByAlias')); } } /** * Method to autoload classes that are namespaced to the PSR-4 standard. * * @param string $class The fully qualified class name to autoload. * * @return boolean True on success, false otherwise. * * @since 3.7.0 */ public static function loadByPsr4($class) { $class = self::stripFirstBackslash($class); // Find the location of the last NS separator. $pos = strrpos($class, '\\'); // If one is found, we're dealing with a NS'd class. if ($pos !== false) { $classPath = str_replace('\\', DIRECTORY_SEPARATOR, substr($class, 0, $pos)) . DIRECTORY_SEPARATOR; $className = substr($class, $pos + 1); } // If not, no need to parse path. else { $classPath = null; $className = $class; } $classPath .= $className . '.php'; // Loop through registered namespaces until we find a match. foreach (self::$namespaces['psr4'] as $ns => $paths) { if (strpos($class, "{$ns}\\") === 0) { $nsPath = trim(str_replace('\\', DIRECTORY_SEPARATOR, $ns), DIRECTORY_SEPARATOR); // Loop through paths registered to this namespace until we find a match. foreach ($paths as $path) { $classFilePath = realpath($path . DIRECTORY_SEPARATOR . substr_replace($classPath, '', 0, strlen($nsPath) + 1)); // We do not allow files outside the namespace root to be loaded if (strpos($classFilePath, realpath($path)) !== 0) { continue; } // We check for class_exists to handle case-sensitive file systems if (file_exists($classFilePath) && !class_exists($class, false)) { $found = (bool) include_once $classFilePath; if ($found) { self::loadAliasFor($class); } return $found; } } } } return false; } /** * Method to autoload classes that are namespaced to the PSR-0 standard. * * @param string $class The fully qualified class name to autoload. * * @return boolean True on success, false otherwise. * * @since 13.1 * * @deprecated 4.0 this method will be removed */ public static function loadByPsr0($class) { $class = self::stripFirstBackslash($class); // Find the location of the last NS separator. $pos = strrpos($class, '\\'); // If one is found, we're dealing with a NS'd class. if ($pos !== false) { $classPath = str_replace('\\', DIRECTORY_SEPARATOR, substr($class, 0, $pos)) . DIRECTORY_SEPARATOR; $className = substr($class, $pos + 1); } // If not, no need to parse path. else { $classPath = null; $className = $class; } $classPath .= str_replace('_', DIRECTORY_SEPARATOR, $className) . '.php'; // Loop through registered namespaces until we find a match. foreach (self::$namespaces['psr0'] as $ns => $paths) { if (strpos($class, $ns) === 0) { // Loop through paths registered to this namespace until we find a match. foreach ($paths as $path) { $classFilePath = realpath($path . DIRECTORY_SEPARATOR . $classPath); // We do not allow files outside the namespace root to be loaded if (strpos($classFilePath, realpath($path)) !== 0) { continue; } // We check for class_exists to handle case-sensitive file systems if (file_exists($classFilePath) && !class_exists($class, false)) { $found = (bool) include_once $classFilePath; if ($found) { self::loadAliasFor($class); } return $found; } } } } return false; } /** * Method to autoload classes that have been aliased using the registerAlias method. * * @param string $class The fully qualified class name to autoload. * * @return boolean True on success, false otherwise. * * @since 3.2 */ public static function loadByAlias($class) { $class = strtolower(self::stripFirstBackslash($class)); if (isset(self::$classAliases[$class])) { // Force auto-load of the regular class class_exists(self::$classAliases[$class], true); // Normally this shouldn't execute as the autoloader will execute applyAliasFor when the regular class is // auto-loaded above. if (!class_exists($class, false) && !interface_exists($class, false)) { class_alias(self::$classAliases[$class], $class); } } } /** * Applies a class alias for an already loaded class, if a class alias was created for it. * * @param string $class We'll look for and register aliases for this (real) class name * * @return void * * @since 3.4 */ public static function applyAliasFor($class) { $class = self::stripFirstBackslash($class); if (isset(self::$classAliasesInverse[$class])) { foreach (self::$classAliasesInverse[$class] as $alias) { class_alias($class, $alias); } } } /** * Autoload a class based on name. * * @param string $class The class to be loaded. * * @return boolean True if the class was loaded, false otherwise. * * @since 11.3 */ public static function _autoload($class) { foreach (self::$prefixes as $prefix => $lookup) { $chr = strlen($prefix) < strlen($class) ? $class[strlen($prefix)] : 0; if (strpos($class, $prefix) === 0 && ($chr === strtoupper($chr))) { return self::_load(substr($class, strlen($prefix)), $lookup); } } return false; } /** * Load a class based on name and lookup array. * * @param string $class The class to be loaded (without prefix). * @param array $lookup The array of base paths to use for finding the class file. * * @return boolean True if the class was loaded, false otherwise. * * @since 12.1 */ private static function _load($class, $lookup) { // Split the class name into parts separated by camelCase. $parts = preg_split('/(?<=[a-z0-9])(?=[A-Z])/x', $class); $partsCount = count($parts); foreach ($lookup as $base) { // Generate the path based on the class name parts. $path = realpath($base . '/' . implode('/', array_map('strtolower', $parts)) . '.php'); // Load the file if it exists and is in the lookup path. if (strpos($path, realpath($base)) === 0 && file_exists($path)) { $found = (bool) include_once $path; if ($found) { self::loadAliasFor($class); } return $found; } // Backwards compatibility patch // If there is only one part we want to duplicate that part for generating the path. if ($partsCount === 1) { // Generate the path based on the class name parts. $path = realpath($base . '/' . implode('/', array_map('strtolower', array($parts[0], $parts[0]))) . '.php'); // Load the file if it exists and is in the lookup path. if (strpos($path, realpath($base)) === 0 && file_exists($path)) { $found = (bool) include_once $path; if ($found) { self::loadAliasFor($class); } return $found; } } } return false; } /** * Loads the aliases for the given class. * * @param string $class The class. * * @return void * * @since 3.8.0 */ private static function loadAliasFor($class) { if (!key_exists($class, self::$classAliasesInverse)) { return; } foreach (self::$classAliasesInverse[$class] as $alias) { // Force auto-load of the alias class class_exists($alias, true); } } /** * Strips the first backslash from the given class if present. * * @param string $class The class to strip the first prefix from. * * @return string The striped class name. * * @since 3.8.0 */ private static function stripFirstBackslash($class) { return $class && $class[0] === '\\' ? substr($class, 1) : $class; } } // Check if jexit is defined first (our unit tests mock this) if (!function_exists('jexit')) { /** * Global application exit. * * This function provides a single exit point for the platform. * * @param mixed $message Exit code or string. Defaults to zero. * * @return void * * @codeCoverageIgnore * @since 11.1 */ function jexit($message = 0) { exit($message); } } /** * Intelligent file importer. * * @param string $path A dot syntax path. * @param string $base Search this directory for the class. * * @return boolean True on success. * * @since 11.1 */ function jimport($path, $base = null) { return JLoader::import($path, $base); }