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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 00000000..1db8d9a0 --- /dev/null +++ b/vendor/composer/ClassLoader.php | |||
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1 | <?php | ||
2 | |||
3 | /* | ||
4 | * This file is part of Composer. | ||
5 | * | ||
6 | * (c) Nils Adermann <naderman@naderman.de> | ||
7 | * Jordi Boggiano <j.boggiano@seld.be> | ||
8 | * | ||
9 | * For the full copyright and license information, please view the LICENSE | ||
10 | * file that was distributed with this source code. | ||
11 | */ | ||
12 | |||
13 | namespace Composer\Autoload; | ||
14 | |||
15 | /** | ||
16 | * ClassLoader implements a PSR-0 class loader | ||
17 | * | ||
18 | * See https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-0.md | ||
19 | * | ||
20 | * $loader = new \Composer\Autoload\ClassLoader(); | ||
21 | * | ||
22 | * // register classes with namespaces | ||
23 | * $loader->add('Symfony\Component', __DIR__.'/component'); | ||
24 | * $loader->add('Symfony', __DIR__.'/framework'); | ||
25 | * | ||
26 | * // activate the autoloader | ||
27 | * $loader->register(); | ||
28 | * | ||
29 | * // to enable searching the include path (eg. for PEAR packages) | ||
30 | * $loader->setUseIncludePath(true); | ||
31 | * | ||
32 | * In this example, if you try to use a class in the Symfony\Component | ||
33 | * namespace or one of its children (Symfony\Component\Console for instance), | ||
34 | * the autoloader will first look for the class under the component/ | ||
35 | * directory, and it will then fallback to the framework/ directory if not | ||
36 | * found before giving up. | ||
37 | * | ||
38 | * This class is loosely based on the Symfony UniversalClassLoader. | ||
39 | * | ||
40 | * @author Fabien Potencier <fabien@symfony.com> | ||
41 | * @author Jordi Boggiano <j.boggiano@seld.be> | ||
42 | */ | ||
43 | class ClassLoader | ||
44 | { | ||
45 | private $prefixes = array(); | ||
46 | private $fallbackDirs = array(); | ||
47 | private $useIncludePath = false; | ||
48 | private $classMap = array(); | ||
49 | |||
50 | public function getPrefixes() | ||
51 | { | ||
52 | return call_user_func_array('array_merge', $this->prefixes); | ||
53 | } | ||
54 | |||
55 | public function getFallbackDirs() | ||
56 | { | ||
57 | return $this->fallbackDirs; | ||
58 | } | ||
59 | |||
60 | public function getClassMap() | ||
61 | { | ||
62 | return $this->classMap; | ||
63 | } | ||
64 | |||
65 | /** | ||
66 | * @param array $classMap Class to filename map | ||
67 | */ | ||
68 | public function addClassMap(array $classMap) | ||
69 | { | ||
70 | if ($this->classMap) { | ||
71 | $this->classMap = array_merge($this->classMap, $classMap); | ||
72 | } else { | ||
73 | $this->classMap = $classMap; | ||
74 | } | ||
75 | } | ||
76 | |||
77 | /** | ||
78 | * Registers a set of classes, merging with any others previously set. | ||
79 | * | ||
80 | * @param string $prefix The classes prefix | ||
81 | * @param array|string $paths The location(s) of the classes | ||
82 | * @param bool $prepend Prepend the location(s) | ||
83 | */ | ||
84 | public function add($prefix, $paths, $prepend = false) | ||
85 | { | ||
86 | if (!$prefix) { | ||
87 | if ($prepend) { | ||
88 | $this->fallbackDirs = array_merge( | ||
89 | (array) $paths, | ||
90 | $this->fallbackDirs | ||
91 | ); | ||
92 | } else { | ||
93 | $this->fallbackDirs = array_merge( | ||
94 | $this->fallbackDirs, | ||
95 | (array) $paths | ||
96 | ); | ||
97 | } | ||
98 | |||
99 | return; | ||
100 | } | ||
101 | |||
102 | $first = $prefix[0]; | ||
103 | if (!isset($this->prefixes[$first][$prefix])) { | ||
104 | $this->prefixes[$first][$prefix] = (array) $paths; | ||
105 | |||
106 | return; | ||
107 | } | ||
108 | if ($prepend) { | ||
109 | $this->prefixes[$first][$prefix] = array_merge( | ||
110 | (array) $paths, | ||
111 | $this->prefixes[$first][$prefix] | ||
112 | ); | ||
113 | } else { | ||
114 | $this->prefixes[$first][$prefix] = array_merge( | ||
115 | $this->prefixes[$first][$prefix], | ||
116 | (array) $paths | ||
117 | ); | ||
118 | } | ||
119 | } | ||
120 | |||
121 | /** | ||
122 | * Registers a set of classes, replacing any others previously set. | ||
123 | * | ||
124 | * @param string $prefix The classes prefix | ||
125 | * @param array|string $paths The location(s) of the classes | ||
126 | */ | ||
127 | public function set($prefix, $paths) | ||
128 | { | ||
129 | if (!$prefix) { | ||
130 | $this->fallbackDirs = (array) $paths; | ||
131 | |||
132 | return; | ||
133 | } | ||
134 | $this->prefixes[substr($prefix, 0, 1)][$prefix] = (array) $paths; | ||
135 | } | ||
136 | |||
137 | /** | ||
138 | * Turns on searching the include path for class files. | ||
139 | * | ||
140 | * @param bool $useIncludePath | ||
141 | */ | ||
142 | public function setUseIncludePath($useIncludePath) | ||
143 | { | ||
144 | $this->useIncludePath = $useIncludePath; | ||
145 | } | ||
146 | |||
147 | /** | ||
148 | * Can be used to check if the autoloader uses the include path to check | ||
149 | * for classes. | ||
150 | * | ||
151 | * @return bool | ||
152 | */ | ||
153 | public function getUseIncludePath() | ||
154 | { | ||
155 | return $this->useIncludePath; | ||
156 | } | ||
157 | |||
158 | /** | ||
159 | * Registers this instance as an autoloader. | ||
160 | * | ||
161 | * @param bool $prepend Whether to prepend the autoloader or not | ||
162 | */ | ||
163 | public function register($prepend = false) | ||
164 | { | ||
165 | spl_autoload_register(array($this, 'loadClass'), true, $prepend); | ||
166 | } | ||
167 | |||
168 | /** | ||
169 | * Unregisters this instance as an autoloader. | ||
170 | */ | ||
171 | public function unregister() | ||
172 | { | ||
173 | spl_autoload_unregister(array($this, 'loadClass')); | ||
174 | } | ||
175 | |||
176 | /** | ||
177 | * Loads the given class or interface. | ||
178 | * | ||
179 | * @param string $class The name of the class | ||
180 | * @return bool|null True if loaded, null otherwise | ||
181 | */ | ||
182 | public function loadClass($class) | ||
183 | { | ||
184 | if ($file = $this->findFile($class)) { | ||
185 | include $file; | ||
186 | |||
187 | return true; | ||
188 | } | ||
189 | } | ||
190 | |||
191 | /** | ||
192 | * Finds the path to the file where the class is defined. | ||
193 | * | ||
194 | * @param string $class The name of the class | ||
195 | * | ||
196 | * @return string|false The path if found, false otherwise | ||
197 | */ | ||
198 | public function findFile($class) | ||
199 | { | ||
200 | // work around for PHP 5.3.0 - 5.3.2 https://bugs.php.net/50731 | ||
201 | if ('\\' == $class[0]) { | ||
202 | $class = substr($class, 1); | ||
203 | } | ||
204 | |||
205 | if (isset($this->classMap[$class])) { | ||
206 | return $this->classMap[$class]; | ||
207 | } | ||
208 | |||
209 | if (false !== $pos = strrpos($class, '\\')) { | ||
210 | // namespaced class name | ||
211 | $classPath = strtr(substr($class, 0, $pos), '\\', DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR; | ||
212 | $className = substr($class, $pos + 1); | ||
213 | } else { | ||
214 | // PEAR-like class name | ||
215 | $classPath = null; | ||
216 | $className = $class; | ||
217 | } | ||
218 | |||
219 | $classPath .= strtr($className, '_', DIRECTORY_SEPARATOR) . '.php'; | ||
220 | |||
221 | $first = $class[0]; | ||
222 | if (isset($this->prefixes[$first])) { | ||
223 | foreach ($this->prefixes[$first] as $prefix => $dirs) { | ||
224 | if (0 === strpos($class, $prefix)) { | ||
225 | foreach ($dirs as $dir) { | ||
226 | if (file_exists($dir . DIRECTORY_SEPARATOR . $classPath)) { | ||
227 | return $dir . DIRECTORY_SEPARATOR . $classPath; | ||
228 | } | ||
229 | } | ||
230 | } | ||
231 | } | ||
232 | } | ||
233 | |||
234 | foreach ($this->fallbackDirs as $dir) { | ||
235 | if (file_exists($dir . DIRECTORY_SEPARATOR . $classPath)) { | ||
236 | return $dir . DIRECTORY_SEPARATOR . $classPath; | ||
237 | } | ||
238 | } | ||
239 | |||
240 | if ($this->useIncludePath && $file = stream_resolve_include_path($classPath)) { | ||
241 | return $file; | ||
242 | } | ||
243 | |||
244 | return $this->classMap[$class] = false; | ||
245 | } | ||
246 | } | ||