1 <?php
  2 
  3 namespace Docolight\Support;
  4 
  5 /**
  6  * Class loader.
  7  *
  8  * @author Krisan Alfa Timur <krisanalfa@docotel.co.id>
  9  */
 10 class ClassLoader
 11 {
 12     /**
 13      * The registered directories.
 14      *
 15      * @var array
 16      */
 17     protected static $directories = array();
 18 
 19     /**
 20      * Indicates if a ClassLoader has been registered.
 21      *
 22      * @var bool
 23      */
 24     protected static $registered = false;
 25 
 26     /**
 27      * Load the given class file.
 28      *
 29      * @param string $class
 30      *
 31      * @return bool
 32      */
 33     public static function load($class)
 34     {
 35         $class = static::normalizeClass($class);
 36 
 37         foreach (static::$directories as $directory) {
 38             if (file_exists($path = $directory.DIRECTORY_SEPARATOR.$class)) {
 39                 require_once $path;
 40 
 41                 return true;
 42             }
 43         }
 44 
 45         return false;
 46     }
 47 
 48     /**
 49      * Get the normal file name for a class.
 50      *
 51      * @param string $class
 52      *
 53      * @return string
 54      */
 55     public static function normalizeClass($class)
 56     {
 57         if ($class[0] == '\\') {
 58             $class = substr($class, 1);
 59         }
 60 
 61         return str_replace(array('\\', '_'), DIRECTORY_SEPARATOR, $class).'.php';
 62     }
 63 
 64     /**
 65      * Register the given class loader on the auto-loader stack.
 66      */
 67     public static function register()
 68     {
 69         if (!static::$registered) {
 70             static::$registered = spl_autoload_register(array('\Docolight\Support\ClassLoader', 'load'));
 71         }
 72     }
 73 
 74     /**
 75      * Add directories to the class loader.
 76      *
 77      * @param string|array $directories
 78      */
 79     public static function addDirectories($directories)
 80     {
 81         static::$directories = array_unique(array_merge(static::$directories, (array) $directories));
 82     }
 83 
 84     /**
 85      * Remove directories from the class loader.
 86      *
 87      * @param string|array $directories
 88      */
 89     public static function removeDirectories($directories = null)
 90     {
 91         if (is_null($directories)) {
 92             static::$directories = array();
 93         } else {
 94             static::$directories = array_diff(static::$directories, (array) $directories);
 95         }
 96     }
 97 
 98     /**
 99      * Gets all the directories registered with the loader.
100      *
101      * @return array
102      */
103     public static function getDirectories()
104     {
105         return static::$directories;
106     }
107 }
108