paulgoughbooks_old
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<?php /** * CodeIgniter * * An open source application development framework for PHP * * This content is released under the MIT License (MIT) * * Copyright (c) 2014-2019 British Columbia Institute of Technology * Copyright (c) 2019-2020 CodeIgniter Foundation * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. * * @package CodeIgniter * @author CodeIgniter Dev Team * @copyright 2019-2020 CodeIgniter Foundation * @license https://opensource.org/licenses/MIT MIT License * @link https://codeigniter.com * @since Version 4.0.0 * @filesource */ namespace CodeIgniter\Autoloader; /** * CodeIgniter Autoloader * * An autoloader that uses both PSR4 autoloading, and traditional classmaps. * * Given a foo-bar package of classes in the file system at the following paths: * * /path/to/packages/foo-bar/ * /src * Baz.php # Foo\Bar\Baz * Qux/ * Quux.php # Foo\Bar\Qux\Quux * * you can add the path to the configuration array that is passed in the constructor. * The Config array consists of 2 primary keys, both of which are associative arrays: * 'psr4', and 'classmap'. * * $Config = [ * 'psr4' => [ * 'Foo\Bar' => '/path/to/packages/foo-bar' * ], * 'classmap' => [ * 'MyClass' => '/path/to/class/file.php' * ] * ]; * * Example: * * <?php * // our configuration array * $Config = [ ... ]; * $loader = new \CodeIgniter\Autoloader\Autoloader($Config); * * // register the autoloader * $loader->register(); * * @package CodeIgniter\Autoloader */ class Autoloader { /** * Stores namespaces as key, and path as values. * * @var array */ protected $prefixes = []; /** * Stores class name as key, and path as values. * * @var array */ protected $classmap = []; //-------------------------------------------------------------------- /** * Reads in the configuration array (described above) and stores * the valid parts that we'll need. * * @param \Config\Autoload $config * @param \Config\Modules $moduleConfig * * @return $this */ public function initialize(\Config\Autoload $config, \Config\Modules $moduleConfig) { // We have to have one or the other, though we don't enforce the need // to have both present in order to work. if (empty($config->psr4) && empty($config->classmap)) { throw new \InvalidArgumentException('Config array must contain either the \'psr4\' key or the \'classmap\' key.'); } if (isset($config->psr4)) { $this->addNamespace($config->psr4); } if (isset($config->classmap)) { $this->classmap = $config->classmap; } // Should we load through Composer's namespaces, also? if ($moduleConfig->discoverInComposer) { $this->discoverComposerNamespaces(); } return $this; } //-------------------------------------------------------------------- /** * Register the loader with the SPL autoloader stack. */ public function register() { // Since the default file extensions are searched // in order of .inc then .php, but we always use .php, // put the .php extension first to eek out a bit // better performance. // http://php.net/manual/en/function.spl-autoload.php#78053 spl_autoload_extensions('.php,.inc'); // Prepend the PSR4 autoloader for maximum performance. spl_autoload_register([$this, 'loadClass'], true, true); // Now prepend another loader for the files in our class map. $config = is_array($this->classmap) ? $this->classmap : []; spl_autoload_register(function ($class) use ($config) { if (empty($config[$class])) { return false; } include_once $config[$class]; }, true, // Throw exception true // Prepend ); } //-------------------------------------------------------------------- /** * Registers namespaces with the autoloader. * * @param array|string $namespace * @param string $path * * @return Autoloader */ public function addNamespace($namespace, string $path = null) { if (is_array($namespace)) { foreach ($namespace as $prefix => $path) { $prefix = trim($prefix, '\\'); if (is_array($path)) { foreach ($path as $dir) { $this->prefixes[$prefix][] = rtrim($dir, '/') . '/'; } continue; } $this->prefixes[$prefix][] = rtrim($path, '/') . '/'; } } else { $this->prefixes[trim($namespace, '\\')][] = rtrim($path, '/') . '/'; } return $this; } //-------------------------------------------------------------------- /** * Get namespaces with prefixes as keys and paths as values. * * If a prefix param is set, returns only paths to the given prefix. * * @var string|null $prefix * * @return array */ public function getNamespace(string $prefix = null) { if ($prefix === null) { return $this->prefixes; } return $this->prefixes[trim($prefix, '\\')] ?? []; } //-------------------------------------------------------------------- /** * Removes a single namespace from the psr4 settings. * * @param string $namespace * * @return Autoloader */ public function removeNamespace(string $namespace) { unset($this->prefixes[trim($namespace, '\\')]); return $this; } //-------------------------------------------------------------------- /** * Loads the class file for a given class name. * * @param string $class The fully qualified class name. * * @return string|false The mapped file on success, or boolean false * on failure. */ public function loadClass(string $class) { $class = trim($class, '\\'); $class = str_ireplace('.php', '', $class); $mapped_file = $this->loadInNamespace($class); // Nothing? One last chance by looking // in common CodeIgniter folders. if (! $mapped_file) { $mapped_file = $this->loadLegacy($class); } return $mapped_file; } //-------------------------------------------------------------------- /** * Loads the class file for a given class name. * * @param string $class The fully-qualified class name * * @return string|false The mapped file name on success, or boolean false on fail */ protected function loadInNamespace(string $class) { if (strpos($class, '\\') === false) { return false; } foreach ($this->prefixes as $namespace => $directories) { foreach ($directories as $directory) { $directory = rtrim($directory, '/'); if (strpos($class, $namespace) === 0) { $filePath = $directory . str_replace('\\', '/', substr($class, strlen($namespace))) . '.php'; $filename = $this->requireFile($filePath); if ($filename) { return $filename; } } } } // never found a mapped file return false; } //-------------------------------------------------------------------- /** * Attempts to load the class from common locations in previous * version of CodeIgniter, namely 'app/Libraries', and * 'app/Models'. * * @param string $class The class name. This typically should NOT have a namespace. * * @return mixed The mapped file name on success, or boolean false on failure */ protected function loadLegacy(string $class) { // If there is a namespace on this class, then // we cannot load it from traditional locations. if (strpos($class, '\\') !== false) { return false; } $paths = [ APPPATH . 'Controllers/', APPPATH . 'Libraries/', APPPATH . 'Models/', ]; $class = str_replace('\\', '/', $class) . '.php'; foreach ($paths as $path) { if ($file = $this->requireFile($path . $class)) { return $file; } } return false; } //-------------------------------------------------------------------- /** * A central way to require a file is loaded. Split out primarily * for testing purposes. * * @param string $file * * @return string|false The filename on success, false if the file is not loaded */ protected function requireFile(string $file) { $file = $this->sanitizeFilename($file); if (is_file($file)) { require_once $file; return $file; } return false; } //-------------------------------------------------------------------- /** * Sanitizes a filename, replacing spaces with dashes. * * Removes special characters that are illegal in filenames on certain * operating systems and special characters requiring special escaping * to manipulate at the command line. Replaces spaces and consecutive * dashes with a single dash. Trim period, dash and underscore from beginning * and end of filename. * * @param string $filename * * @return string The sanitized filename */ public function sanitizeFilename(string $filename): string { // Only allow characters deemed safe for POSIX portable filenames. // Plus the forward slash for directory separators since this might // be a path. // http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap03.html#tag_03_278 // Modified to allow backslash and colons for on Windows machines. $filename = preg_replace('/[^0-9\p{L}\s\/\-\_\.\:\\\\]/u', '', $filename); // Clean up our filename edges. $filename = trim($filename, '.-_'); return $filename; } //-------------------------------------------------------------------- /** * Locates all PSR4 compatible namespaces from Composer. */ protected function discoverComposerNamespaces() { if (! is_file(COMPOSER_PATH)) { return false; } $composer = include COMPOSER_PATH; $paths = $composer->getPrefixesPsr4(); unset($composer); // Get rid of CodeIgniter so we don't have duplicates if (isset($paths['CodeIgniter\\'])) { unset($paths['CodeIgniter\\']); } // Composer stores namespaces with trailing slash. We don't. $newPaths = []; foreach ($paths as $key => $value) { $newPaths[rtrim($key, '\\ ')] = $value; } $this->prefixes = array_merge($this->prefixes, $newPaths); } } |
Commits for paulgoughbooks_old/trunk/system/Autoloader/Autoloader.php
Revision | Author | Commited | Message |
---|---|---|---|
2 | tporter | Tue 03 Nov, 2020 08:50:21 +0000 | Migration of Paul Goughs Books site to Codeignitor 4 |