mirror of
https://codeberg.org/streams/streams.git
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745515b11f
We use composer already to install SabreDAV. Include config composer.(json|lock) to install and manage more dependencies in future. Also provide PSR-4 autoloading for our namespaced classes, e.g. "Zotlabs\". To regenerate autoloader maps use: $ composer install --optimize-autoloader --no-dev We could also remove the whole vendor/ folder from our repository, but that would need changes in deployment and how to install hubs and needs more discussion first.
415 lines
12 KiB
PHP
415 lines
12 KiB
PHP
<?php
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/*
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* This file is part of Composer.
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*
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* (c) Nils Adermann <naderman@naderman.de>
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* Jordi Boggiano <j.boggiano@seld.be>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Composer\Autoload;
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/**
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* ClassLoader implements a PSR-0, PSR-4 and classmap class loader.
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*
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* $loader = new \Composer\Autoload\ClassLoader();
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*
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* // register classes with namespaces
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* $loader->add('Symfony\Component', __DIR__.'/component');
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* $loader->add('Symfony', __DIR__.'/framework');
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*
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* // activate the autoloader
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* $loader->register();
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*
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* // to enable searching the include path (eg. for PEAR packages)
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* $loader->setUseIncludePath(true);
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*
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* In this example, if you try to use a class in the Symfony\Component
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* namespace or one of its children (Symfony\Component\Console for instance),
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* the autoloader will first look for the class under the component/
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* directory, and it will then fallback to the framework/ directory if not
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* found before giving up.
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*
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* This class is loosely based on the Symfony UniversalClassLoader.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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* @author Jordi Boggiano <j.boggiano@seld.be>
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* @see http://www.php-fig.org/psr/psr-0/
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* @see http://www.php-fig.org/psr/psr-4/
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*/
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class ClassLoader
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{
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// PSR-4
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private $prefixLengthsPsr4 = array();
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private $prefixDirsPsr4 = array();
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private $fallbackDirsPsr4 = array();
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// PSR-0
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private $prefixesPsr0 = array();
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private $fallbackDirsPsr0 = array();
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private $useIncludePath = false;
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private $classMap = array();
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private $classMapAuthoritative = false;
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private $missingClasses = array();
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public function getPrefixes()
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{
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if (!empty($this->prefixesPsr0)) {
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return call_user_func_array('array_merge', $this->prefixesPsr0);
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}
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return array();
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}
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public function getPrefixesPsr4()
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{
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return $this->prefixDirsPsr4;
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}
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public function getFallbackDirs()
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{
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return $this->fallbackDirsPsr0;
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}
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public function getFallbackDirsPsr4()
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{
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return $this->fallbackDirsPsr4;
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}
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public function getClassMap()
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{
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return $this->classMap;
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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 $classMap)
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{
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if ($this->classMap) {
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$this->classMap = array_merge($this->classMap, $classMap);
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} else {
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$this->classMap = $classMap;
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}
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}
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/**
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* Registers a set of PSR-0 directories for a given prefix, either
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* appending or prepending to the ones previously set for this prefix.
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*
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* @param string $prefix The prefix
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* @param array|string $paths The PSR-0 root directories
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* @param bool $prepend Whether to prepend the directories
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*/
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public function add($prefix, $paths, $prepend = false)
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{
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if (!$prefix) {
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if ($prepend) {
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$this->fallbackDirsPsr0 = array_merge(
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(array) $paths,
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$this->fallbackDirsPsr0
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);
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} else {
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$this->fallbackDirsPsr0 = array_merge(
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$this->fallbackDirsPsr0,
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(array) $paths
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);
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}
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return;
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}
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$first = $prefix[0];
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if (!isset($this->prefixesPsr0[$first][$prefix])) {
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$this->prefixesPsr0[$first][$prefix] = (array) $paths;
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return;
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}
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if ($prepend) {
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$this->prefixesPsr0[$first][$prefix] = array_merge(
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(array) $paths,
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$this->prefixesPsr0[$first][$prefix]
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);
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} else {
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$this->prefixesPsr0[$first][$prefix] = array_merge(
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$this->prefixesPsr0[$first][$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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* Registers a set of PSR-4 directories for a given namespace, either
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* appending or prepending to the ones previously set for this namespace.
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*
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* @param string $prefix The prefix/namespace, with trailing '\\'
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* @param array|string $paths The PSR-4 base directories
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* @param bool $prepend Whether to prepend the directories
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*
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* @throws \InvalidArgumentException
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*/
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public function addPsr4($prefix, $paths, $prepend = false)
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{
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if (!$prefix) {
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// Register directories for the root namespace.
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if ($prepend) {
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$this->fallbackDirsPsr4 = array_merge(
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(array) $paths,
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$this->fallbackDirsPsr4
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);
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} else {
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$this->fallbackDirsPsr4 = array_merge(
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$this->fallbackDirsPsr4,
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(array) $paths
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);
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}
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} elseif (!isset($this->prefixDirsPsr4[$prefix])) {
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// Register directories for a new namespace.
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$length = strlen($prefix);
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if ('\\' !== $prefix[$length - 1]) {
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throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
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}
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$this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
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$this->prefixDirsPsr4[$prefix] = (array) $paths;
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} elseif ($prepend) {
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// Prepend directories for an already registered namespace.
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$this->prefixDirsPsr4[$prefix] = array_merge(
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(array) $paths,
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$this->prefixDirsPsr4[$prefix]
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);
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} else {
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// Append directories for an already registered namespace.
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$this->prefixDirsPsr4[$prefix] = array_merge(
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$this->prefixDirsPsr4[$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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* Registers a set of PSR-0 directories for a given prefix,
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* replacing any others previously set for this prefix.
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*
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* @param string $prefix The prefix
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* @param array|string $paths The PSR-0 base directories
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*/
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public function set($prefix, $paths)
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{
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if (!$prefix) {
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$this->fallbackDirsPsr0 = (array) $paths;
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} else {
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$this->prefixesPsr0[$prefix[0]][$prefix] = (array) $paths;
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}
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}
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/**
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* Registers a set of PSR-4 directories for a given namespace,
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* replacing any others previously set for this namespace.
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*
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* @param string $prefix The prefix/namespace, with trailing '\\'
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* @param array|string $paths The PSR-4 base directories
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*
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* @throws \InvalidArgumentException
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*/
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public function setPsr4($prefix, $paths)
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{
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if (!$prefix) {
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$this->fallbackDirsPsr4 = (array) $paths;
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} else {
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$length = strlen($prefix);
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if ('\\' !== $prefix[$length - 1]) {
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throw new \InvalidArgumentException("A non-empty PSR-4 prefix must end with a namespace separator.");
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}
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$this->prefixLengthsPsr4[$prefix[0]][$prefix] = $length;
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$this->prefixDirsPsr4[$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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{
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$this->useIncludePath = $useIncludePath;
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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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{
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return $this->useIncludePath;
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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 $classMapAuthoritative
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*/
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public function setClassMapAuthoritative($classMapAuthoritative)
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{
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$this->classMapAuthoritative = $classMapAuthoritative;
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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 isClassMapAuthoritative()
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{
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return $this->classMapAuthoritative;
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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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* @param bool $prepend Whether to prepend the autoloader or not
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*/
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public function register($prepend = false)
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{
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spl_autoload_register(array($this, 'loadClass'), true, $prepend);
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}
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/**
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* Unregisters this instance as an autoloader.
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*/
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public function unregister()
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{
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spl_autoload_unregister(array($this, 'loadClass'));
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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 $class The name of the class
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* @return bool|null True if loaded, null otherwise
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*/
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public function loadClass($class)
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{
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if ($file = $this->findFile($class)) {
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includeFile($file);
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return true;
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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 $class The name of the class
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*
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* @return string|false The path if found, false otherwise
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*/
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public function findFile($class)
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{
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// work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731
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if ('\\' == $class[0]) {
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$class = substr($class, 1);
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}
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// class map lookup
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if (isset($this->classMap[$class])) {
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return $this->classMap[$class];
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}
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if ($this->classMapAuthoritative || isset($this->missingClasses[$class])) {
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return false;
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}
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$file = $this->findFileWithExtension($class, '.php');
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// Search for Hack files if we are running on HHVM
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if (false === $file && defined('HHVM_VERSION')) {
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$file = $this->findFileWithExtension($class, '.hh');
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}
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if (false === $file) {
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// Remember that this class does not exist.
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$this->missingClasses[$class] = true;
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}
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return $file;
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}
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private function findFileWithExtension($class, $ext)
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{
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// PSR-4 lookup
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$logicalPathPsr4 = strtr($class, '\\', DIRECTORY_SEPARATOR) . $ext;
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$first = $class[0];
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if (isset($this->prefixLengthsPsr4[$first])) {
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foreach ($this->prefixLengthsPsr4[$first] as $prefix => $length) {
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if (0 === strpos($class, $prefix)) {
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foreach ($this->prefixDirsPsr4[$prefix] as $dir) {
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if (file_exists($file = $dir . DIRECTORY_SEPARATOR . substr($logicalPathPsr4, $length))) {
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return $file;
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}
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}
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}
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}
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}
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// PSR-4 fallback dirs
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foreach ($this->fallbackDirsPsr4 as $dir) {
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if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr4)) {
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return $file;
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}
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}
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// PSR-0 lookup
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if (false !== $pos = strrpos($class, '\\')) {
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// namespaced class name
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$logicalPathPsr0 = substr($logicalPathPsr4, 0, $pos + 1)
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. strtr(substr($logicalPathPsr4, $pos + 1), '_', DIRECTORY_SEPARATOR);
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} else {
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// PEAR-like class name
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$logicalPathPsr0 = strtr($class, '_', DIRECTORY_SEPARATOR) . $ext;
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}
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if (isset($this->prefixesPsr0[$first])) {
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foreach ($this->prefixesPsr0[$first] as $prefix => $dirs) {
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if (0 === strpos($class, $prefix)) {
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foreach ($dirs as $dir) {
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if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
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return $file;
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}
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}
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}
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}
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}
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// PSR-0 fallback dirs
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foreach ($this->fallbackDirsPsr0 as $dir) {
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if (file_exists($file = $dir . DIRECTORY_SEPARATOR . $logicalPathPsr0)) {
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return $file;
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}
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}
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// PSR-0 include paths.
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if ($this->useIncludePath && $file = stream_resolve_include_path($logicalPathPsr0)) {
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return $file;
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}
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return false;
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}
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}
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/**
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* Scope isolated include.
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*
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* Prevents access to $this/self from included files.
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*/
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function includeFile($file)
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{
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include $file;
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}
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