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<?php |
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/* |
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* Copyright (c) 2013, Christoph Mewes, http://www.xrstf.de |
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* |
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* This file is released under the terms of the MIT license. You can find the |
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* complete text in the attached LICENSE file or online at: |
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* |
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* http://www.opensource.org/licenses/mit-license.php |
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* |
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* -------------------------------------------------------------------------- |
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* |
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* 99% of this is copied as-is from the original Composer source code and is |
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* released under MIT license as well. Copyright goes to: |
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* |
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* - Fabien Potencier <fabien@symfony.com> |
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* - Jordi Boggiano <j.boggiano@seld.be> |
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*/ |
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|
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class xrstf_Composer52_ClassLoader { |
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private $prefixes = array(); |
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private $fallbackDirs = array(); |
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private $useIncludePath = false; |
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private $classMap = array(); |
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private $classMapAuthoratative = false; |
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private $allowUnderscore = false; |
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|
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/** |
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* @param boolean $flag true to allow class names with a leading underscore, false to disable |
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*/ |
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public function setAllowUnderscore($flag) { |
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$this->allowUnderscore = (boolean) $flag; |
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} |
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|
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/** |
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* @return array |
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*/ |
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public function getPrefixes() { |
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return $this->prefixes; |
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} |
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|
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/** |
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* Turns off searching the prefix and fallback directories for classes |
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* that have not been registered with the class map. |
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* |
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* @param bool $classMapAuthoratative |
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*/ |
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public function setClassMapAuthoritative($classMapAuthoratative) { |
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$this->classMapAuthoratative = $classMapAuthoratative; |
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} |
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|
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/** |
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* Should class lookup fail if not found in the current class map? |
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* |
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* @return bool |
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*/ |
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public function getClassMapAuthoratative() { |
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return $this->classMapAuthoratative; |
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} |
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|
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/** |
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* @return array |
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*/ |
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public function getFallbackDirs() { |
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return $this->fallbackDirs; |
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} |
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|
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/** |
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* @return array |
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*/ |
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public function getClassMap() { |
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return $this->classMap; |
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} |
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|
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/** |
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* @param array $classMap class to filename map |
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*/ |
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public function addClassMap(array $classMap) { |
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if ($this->classMap) { |
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$this->classMap = array_merge($this->classMap, $classMap); |
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} |
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else { |
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$this->classMap = $classMap; |
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} |
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} |
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|
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/** |
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* Registers a set of classes, merging with any others previously set. |
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* |
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* @param string $prefix the classes prefix |
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* @param array|string $paths the location(s) of the classes |
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* @param bool $prepend prepend the location(s) |
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*/ |
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public function add($prefix, $paths, $prepend = false) { |
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if (!$prefix) { |
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if ($prepend) { |
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$this->fallbackDirs = array_merge( |
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(array) $paths, |
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$this->fallbackDirs |
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); |
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} |
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else { |
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$this->fallbackDirs = array_merge( |
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$this->fallbackDirs, |
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(array) $paths |
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); |
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} |
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|
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return; |
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} |
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|
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if (!isset($this->prefixes[$prefix])) { |
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$this->prefixes[$prefix] = (array) $paths; |
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return; |
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} |
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|
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if ($prepend) { |
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$this->prefixes[$prefix] = array_merge( |
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(array) $paths, |
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$this->prefixes[$prefix] |
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); |
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} |
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else { |
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$this->prefixes[$prefix] = array_merge( |
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$this->prefixes[$prefix], |
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(array) $paths |
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); |
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} |
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} |
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|
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/** |
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* Registers a set of classes, replacing any others previously set. |
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* |
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* @param string $prefix the classes prefix |
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* @param array|string $paths the location(s) of the classes |
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*/ |
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public function set($prefix, $paths) { |
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if (!$prefix) { |
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$this->fallbackDirs = (array) $paths; |
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return; |
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} |
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|
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$this->prefixes[$prefix] = (array) $paths; |
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} |
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|
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/** |
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* Turns on searching the include path for class files. |
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* |
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* @param bool $useIncludePath |
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*/ |
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public function setUseIncludePath($useIncludePath) { |
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$this->useIncludePath = $useIncludePath; |
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} |
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|
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/** |
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* Can be used to check if the autoloader uses the include path to check |
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* for classes. |
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* |
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* @return bool |
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*/ |
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public function getUseIncludePath() { |
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return $this->useIncludePath; |
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} |
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|
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/** |
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* Registers this instance as an autoloader. |
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*/ |
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public function register() { |
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spl_autoload_register(array($this, 'loadClass'), true); |
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} |
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|
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/** |
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* Unregisters this instance as an autoloader. |
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*/ |
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public function unregister() { |
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spl_autoload_unregister(array($this, 'loadClass')); |
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} |
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|
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/** |
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* Loads the given class or interface. |
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* |
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* @param string $class the name of the class |
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* @return bool|null true, if loaded |
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*/ |
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public function loadClass($class) { |
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if ($file = $this->findFile($class)) { |
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include $file; |
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return true; |
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} |
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} |
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|
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/** |
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* Finds the path to the file where the class is defined. |
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* |
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* @param string $class the name of the class |
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* @return string|null the path, if found |
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*/ |
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public function findFile($class) { |
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if ('\\' === $class[0]) { |
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$class = substr($class, 1); |
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} |
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|
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if (isset($this->classMap[$class])) { |
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return $this->classMap[$class]; |
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} |
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elseif ($this->classMapAuthoratative) { |
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return false; |
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} |
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|
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$classPath = $this->getClassPath($class); |
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|
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foreach ($this->prefixes as $prefix => $dirs) { |
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if (0 === strpos($class, $prefix)) { |
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foreach ($dirs as $dir) { |
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if (file_exists($dir.DIRECTORY_SEPARATOR.$classPath)) { |
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return $dir.DIRECTORY_SEPARATOR.$classPath; |
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} |
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} |
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} |
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} |
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|
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foreach ($this->fallbackDirs as $dir) { |
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if (file_exists($dir.DIRECTORY_SEPARATOR.$classPath)) { |
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return $dir.DIRECTORY_SEPARATOR.$classPath; |
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} |
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} |
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|
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if ($this->useIncludePath && $file = self::resolveIncludePath($classPath)) { |
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return $file; |
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} |
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|
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return $this->classMap[$class] = false; |
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} |
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|
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private function getClassPath($class) { |
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if (false !== $pos = strrpos($class, '\\')) { |
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// namespaced class name |
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$classPath = str_replace('\\', DIRECTORY_SEPARATOR, substr($class, 0, $pos)).DIRECTORY_SEPARATOR; |
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$className = substr($class, $pos + 1); |
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} |
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else { |
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// PEAR-like class name |
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$classPath = null; |
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$className = $class; |
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} |
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|
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$className = str_replace('_', DIRECTORY_SEPARATOR, $className); |
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|
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// restore the prefix |
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if ($this->allowUnderscore && DIRECTORY_SEPARATOR === $className[0]) { |
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$className[0] = '_'; |
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} |
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|
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$classPath .= $className.'.php'; |
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|
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return $classPath; |
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} |
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|
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public static function resolveIncludePath($classPath) { |
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$paths = explode(PATH_SEPARATOR, get_include_path()); |
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|
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foreach ($paths as $path) { |
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$path = rtrim($path, '/\\'); |
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|
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if ($file = file_exists($path.DIRECTORY_SEPARATOR.$file)) { |
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return $file; |
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} |
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} |
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|
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return false; |
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} |
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} |
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|
