comparison vendor/symfony/class-loader/ClassLoader.php @ 0:4c8ae668cc8c

Initial import (non-working)

+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[e-mail]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ClassLoader;
+
+/**
+ * ClassLoader implements an PSR-0 class loader.
+ *
+ * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md
+ *
+ *     $loader = new ClassLoader();
+ *
+ *     // register classes with namespaces
+ *     $loader->addPrefix('Symfony\Component', __DIR__.'/component');
+ *     $loader->addPrefix('Symfony',           __DIR__.'/framework');
+ *
+ *     // activate the autoloader
+ *     $loader->register();
+ *
+ *     // to enable searching the include path (e.g. for PEAR packages)
+ *     $loader->setUseIncludePath(true);
+ *
+ * In this example, if you try to use a class in the Symfony\Component
+ * namespace or one of its children (Symfony\Component\Console for instance),
+ * the autoloader will first look for the class under the component/
+ * directory, and it will then fallback to the framework/ directory if not
+ * found before giving up.
+ *
+ * @author Fabien Potencier <[e-mail]>
+ * @author Jordi Boggiano <[e-mail]>
+ */
+class ClassLoader
+{
+    private $prefixes = array();
+    private $fallbackDirs = array();
+    private $useIncludePath = false;
+
+    /**
+     * Returns prefixes.
+     *
+     * @return array
+     */
+    public function getPrefixes()
+    {
+        return $this->prefixes;
+    }
+
+    /**
+     * Returns fallback directories.
+     *
+     * @return array
+     */
+    public function getFallbackDirs()
+    {
+        return $this->fallbackDirs;
+    }
+
+    /**
+     * Adds prefixes.
+     *
+     * @param array $prefixes Prefixes to add
+     */
+    public function addPrefixes(array $prefixes)
+    {
+        foreach ($prefixes as $prefix => $path) {
+            $this->addPrefix($prefix, $path);
+        }
+    }
+
+    /**
+     * Registers a set of classes.
+     *
+     * @param string       $prefix The classes prefix
+     * @param array|string $paths  The location(s) of the classes
+     */
+    public function addPrefix($prefix, $paths)
+    {
+        if (!$prefix) {
+            foreach ((array) $paths as $path) {
+                $this->fallbackDirs[] = $path;
+            }
+
+            return;
+        }
+        if (isset($this->prefixes[$prefix])) {
+            if (is_array($paths)) {
+                $this->prefixes[$prefix] = array_unique(array_merge(
+                    $this->prefixes[$prefix],
+                    $paths
+                ));
+            } elseif (!in_array($paths, $this->prefixes[$prefix])) {
+                $this->prefixes[$prefix][] = $paths;
+            }
+        } else {
+            $this->prefixes[$prefix] = array_unique((array) $paths);
+        }
+    }
+
+    /**
+     * Turns on searching the include for class files.
+     *
+     * @param bool $useIncludePath
+     */
+    public function setUseIncludePath($useIncludePath)
+    {
+        $this->useIncludePath = (bool) $useIncludePath;
+    }
+
+    /**
+     * Can be used to check if the autoloader uses the include path to check
+     * for classes.
+     *
+     * @return bool
+     */
+    public function getUseIncludePath()
+    {
+        return $this->useIncludePath;
+    }
+
+    /**
+     * Registers this instance as an autoloader.
+     *
+     * @param bool $prepend Whether to prepend the autoloader or not
+     */
+    public function register($prepend = false)
+    {
+        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+    }
+
+    /**
+     * Unregisters this instance as an autoloader.
+     */
+    public function unregister()
+    {
+        spl_autoload_unregister(array($this, 'loadClass'));
+    }
+
+    /**
+     * Loads the given class or interface.
+     *
+     * @param string $class The name of the class
+     *
+     * @return bool|null True, if loaded
+     */
+    public function loadClass($class)
+    {
+        if ($file = $this->findFile($class)) {
+            require $file;
+
+            return true;
+        }
+    }
+
+    /**
+     * Finds the path to the file where the class is defined.
+     *
+     * @param string $class The name of the class
+     *
+     * @return string|null The path, if found
+     */
+    public function findFile($class)
+    {
+        if (false !== $pos = strrpos($class, '\\')) {
+            // namespaced class name
+            $classPath = str_replace('\\', DIRECTORY_SEPARATOR, substr($class, 0, $pos)).DIRECTORY_SEPARATOR;
+            $className = substr($class, $pos + 1);
+        } else {
+            // PEAR-like class name
+            $classPath = null;
+            $className = $class;
+        }
+
+        $classPath .= str_replace('_', DIRECTORY_SEPARATOR, $className).'.php';
+
+        foreach ($this->prefixes as $prefix => $dirs) {
+            if ($class === strstr($class, $prefix)) {
+                foreach ($dirs as $dir) {
+                    if (file_exists($dir.DIRECTORY_SEPARATOR.$classPath)) {
+                        return $dir.DIRECTORY_SEPARATOR.$classPath;
+                    }
+                }
+            }
+        }
+
+        foreach ($this->fallbackDirs as $dir) {
+            if (file_exists($dir.DIRECTORY_SEPARATOR.$classPath)) {
+                return $dir.DIRECTORY_SEPARATOR.$classPath;
+            }
+        }
+
+        if ($this->useIncludePath && $file = stream_resolve_include_path($classPath)) {
+            return $file;
+        }
+    }
+}