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Diffstat (limited to 'vendor/composer/ClassLoader.php')
| -rw-r--r-- | vendor/composer/ClassLoader.php | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/vendor/composer/ClassLoader.php b/vendor/composer/ClassLoader.php new file mode 100644 index 000000000..1db8d9a0b --- /dev/null +++ b/vendor/composer/ClassLoader.php @@ -0,0 +1,246 @@ +<?php + +/* + * This file is part of Composer. + * + * (c) Nils Adermann <naderman@naderman.de> + * Jordi Boggiano <j.boggiano@seld.be> + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +namespace Composer\Autoload; + +/** + * ClassLoader implements a PSR-0 class loader + * + * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md + * + * $loader = new \Composer\Autoload\ClassLoader(); + * + * // register classes with namespaces + * $loader->add('Symfony\Component', __DIR__.'/component'); + * $loader->add('Symfony', __DIR__.'/framework'); + * + * // activate the autoloader + * $loader->register(); + * + * // to enable searching the include path (eg. 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. + * + * This class is loosely based on the Symfony UniversalClassLoader. + * + * @author Fabien Potencier <fabien@symfony.com> + * @author Jordi Boggiano <j.boggiano@seld.be> + */ +class ClassLoader +{ + private $prefixes = array(); + private $fallbackDirs = array(); + private $useIncludePath = false; + private $classMap = array(); + + public function getPrefixes() + { + return call_user_func_array('array_merge', $this->prefixes); + } + + public function getFallbackDirs() + { + return $this->fallbackDirs; + } + + public function getClassMap() + { + return $this->classMap; + } + + /** + * @param array $classMap Class to filename map + */ + public function addClassMap(array $classMap) + { + if ($this->classMap) { + $this->classMap = array_merge($this->classMap, $classMap); + } else { + $this->classMap = $classMap; + } + } + + /** + * Registers a set of classes, merging with any others previously set. + * + * @param string $prefix The classes prefix + * @param array|string $paths The location(s) of the classes + * @param bool $prepend Prepend the location(s) + */ + public function add($prefix, $paths, $prepend = false) + { + if (!$prefix) { + if ($prepend) { + $this->fallbackDirs = array_merge( + (array) $paths, + $this->fallbackDirs + ); + } else { + $this->fallbackDirs = array_merge( + $this->fallbackDirs, + (array) $paths + ); + } + + return; + } + + $first = $prefix[0]; + if (!isset($this->prefixes[$first][$prefix])) { + $this->prefixes[$first][$prefix] = (array) $paths; + + return; + } + if ($prepend) { + $this->prefixes[$first][$prefix] = array_merge( + (array) $paths, + $this->prefixes[$first][$prefix] + ); + } else { + $this->prefixes[$first][$prefix] = array_merge( + $this->prefixes[$first][$prefix], + (array) $paths + ); + } + } + + /** + * Registers a set of classes, replacing any others previously set. + * + * @param string $prefix The classes prefix + * @param array|string $paths The location(s) of the classes + */ + public function set($prefix, $paths) + { + if (!$prefix) { + $this->fallbackDirs = (array) $paths; + + return; + } + $this->prefixes[substr($prefix, 0, 1)][$prefix] = (array) $paths; + } + + /** + * Turns on searching the include path for class files. + * + * @param bool $useIncludePath + */ + public function setUseIncludePath($useIncludePath) + { + $this->useIncludePath = $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 $class The name of the class + * @return bool|null True if loaded, null otherwise + */ + public function loadClass($class) + { + if ($file = $this->findFile($class)) { + include $file; + + return true; + } + } + + /** + * Finds the path to the file where the class is defined. + * + * @param string $class The name of the class + * + * @return string|false The path if found, false otherwise + */ + public function findFile($class) + { + // work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731 + if ('\\' == $class[0]) { + $class = substr($class, 1); + } + + if (isset($this->classMap[$class])) { + return $this->classMap[$class]; + } + + if (false !== $pos = strrpos($class, '\\')) { + // namespaced class name + $classPath = strtr(substr($class, 0, $pos), '\\', DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR; + $className = substr($class, $pos + 1); + } else { + // PEAR-like class name + $classPath = null; + $className = $class; + } + + $classPath .= strtr($className, '_', DIRECTORY_SEPARATOR) . '.php'; + + $first = $class[0]; + if (isset($this->prefixes[$first])) { + foreach ($this->prefixes[$first] as $prefix => $dirs) { + if (0 === strpos($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; + } + + return $this->classMap[$class] = false; + } +} |