81 lines
2.0 KiB
PHP
81 lines
2.0 KiB
PHP
<?php namespace Laravel;
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class Autoloader {
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/**
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* The PSR-0 compliant libraries registered with the auto-loader.
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*
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* @var array
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*/
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protected static $libraries = array();
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/**
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* The paths to be searched by the auto-loader.
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*
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* @var array
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*/
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protected static $paths = array(BASE_PATH, MODEL_PATH, LIBRARY_PATH);
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/**
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* Load the file corresponding to a given class.
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*
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* @param string $class
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* @return void
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*/
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public static function load($class)
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{
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// Most of the core classes are aliases for convenient access in spite of
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// the namespace. If an alias is defined for the class, we will load the
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// alias and bail out of the auto-load method.
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if (array_key_exists($class, Config::$items['application']['aliases']))
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{
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return class_alias(Config::$items['application']['aliases'][$class], $class);
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}
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if ( ! is_null($path = static::find($class)))
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{
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require $path;
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}
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}
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/**
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* Find the file associated with a given class name.
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*
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* @param string $class
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* @return string
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*/
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protected static function find($class)
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{
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$file = str_replace('\\', '/', $class);
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$namespace = substr($class, 0, strpos($class, '\\'));
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// If the class namespace exists in the libraries array, it means that the
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// library is PSR-0 compliant, and we will load it following those standards.
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// This allows us to add many third-party libraries to an application and be
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// able to auto-load them automatically.
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if (array_key_exists($namespace, static::$libraries))
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{
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return LIBRARY_PATH.str_replace('_', '/', $file);
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}
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foreach (static::$paths as $path)
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{
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if (file_exists($path = $path.strtolower($file).EXT))
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{
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return $path;
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}
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}
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// If the namespace exists in the libraries directory, we will assume the
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// library is PSR-0 compliant, and will add the namespace to the array of
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// libraries and load the class accordingly.
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if (is_dir(LIBRARY_PATH.$namespace))
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{
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static::$libraries[] = $namespace;
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return LIBRARY_PATH.str_replace('_', '/', $file);
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}
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}
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} |