| 1 | <?php |
| 2 | /* |
| 3 | +--------------------------------------------------------------------+ |
| 4 | | CiviCRM version 4.3 | |
| 5 | +--------------------------------------------------------------------+ |
| 6 | | Copyright CiviCRM LLC (c) 2004-2013 | |
| 7 | +--------------------------------------------------------------------+ |
| 8 | | This file is a part of CiviCRM. | |
| 9 | | | |
| 10 | | CiviCRM is free software; you can copy, modify, and distribute it | |
| 11 | | under the terms of the GNU Affero General Public License | |
| 12 | | Version 3, 19 November 2007 and the CiviCRM Licensing Exception. | |
| 13 | | | |
| 14 | | CiviCRM is distributed in the hope that it will be useful, but | |
| 15 | | WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
| 17 | | See the GNU Affero General Public License for more details. | |
| 18 | | | |
| 19 | | You should have received a copy of the GNU Affero General Public | |
| 20 | | License and the CiviCRM Licensing Exception along | |
| 21 | | with this program; if not, contact CiviCRM LLC | |
| 22 | | at info[AT]civicrm[DOT]org. If you have questions about the | |
| 23 | | GNU Affero General Public License or the licensing of CiviCRM, | |
| 24 | | see the CiviCRM license FAQ at http://civicrm.org/licensing | |
| 25 | +--------------------------------------------------------------------+ |
| 26 | */ |
| 27 | |
| 28 | /** |
| 29 | * |
| 30 | * |
| 31 | * @package CRM |
| 32 | * @copyright CiviCRM LLC (c) 2004-2013 |
| 33 | * $Id$ |
| 34 | * |
| 35 | */ |
| 36 | class CRM_Core_ClassLoader { |
| 37 | |
| 38 | /** |
| 39 | * We only need one instance of this object. So we use the singleton |
| 40 | * pattern and cache the instance in this variable |
| 41 | * @var object |
| 42 | * @static |
| 43 | */ |
| 44 | private static $_singleton = NULL; |
| 45 | |
| 46 | static function &singleton($force = FALSE) { |
| 47 | if ($force || self::$_singleton === NULL) { |
| 48 | self::$_singleton = new CRM_Core_ClassLoader(); |
| 49 | } |
| 50 | return self::$_singleton; |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * @var bool TRUE if previously registered |
| 55 | */ |
| 56 | protected $_registered; |
| 57 | |
| 58 | protected function __construct() { |
| 59 | $this->_registered = FALSE; |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Registers this instance as an autoloader. |
| 64 | * |
| 65 | * @param Boolean $prepend Whether to prepend the autoloader or not |
| 66 | * |
| 67 | * @api |
| 68 | */ |
| 69 | function register($prepend = FALSE) { |
| 70 | if ($this->_registered) { |
| 71 | return; |
| 72 | } |
| 73 | |
| 74 | // we do this to prevent a autoloader errors with joomla / 3rd party packages |
| 75 | // use absolute path since we dont know the content of include_path as yet |
| 76 | // CRM-11304 |
| 77 | |
| 78 | // since HTML Purifier could potentially be loaded / used by other modules / components |
| 79 | // lets check it its already loaded |
| 80 | // we also check if the bootstrap file exists since during install of a drupal distro profile |
| 81 | // the files might not exists, in which case we skip loading the file |
| 82 | // if you change the below, please test on Joomla and also PCP pages |
| 83 | $includeHTMLPurifier = TRUE; |
| 84 | $htmlPurifierPath = dirname(__FILE__) . '/../../packages/IDS/vendors/htmlpurifier/HTMLPurifier/Bootstrap.php'; |
| 85 | if ( |
| 86 | class_exists('HTMLPurifier_Bootstrap') || |
| 87 | !file_exists($htmlPurifierPath) |
| 88 | ) { |
| 89 | $includeHTMLPurifier = FALSE; |
| 90 | } |
| 91 | else { |
| 92 | require_once $htmlPurifierPath; |
| 93 | } |
| 94 | |
| 95 | if (version_compare(PHP_VERSION, '5.3.0') >= 0) { |
| 96 | spl_autoload_register(array($this, 'loadClass'), TRUE, $prepend); |
| 97 | if ($includeHTMLPurifier) { |
| 98 | spl_autoload_register(array('HTMLPurifier_Bootstrap', 'autoload'), TRUE, $prepend); |
| 99 | } |
| 100 | } |
| 101 | else { |
| 102 | // http://www.php.net/manual/de/function.spl-autoload-register.php#107362 |
| 103 | // "when specifying the third parameter (prepend), the function will fail badly in PHP 5.2" |
| 104 | spl_autoload_register(array($this, 'loadClass'), TRUE); |
| 105 | if ($includeHTMLPurifier) { |
| 106 | spl_autoload_register(array('HTMLPurifier_Bootstrap', 'autoload'), TRUE); |
| 107 | } |
| 108 | } |
| 109 | |
| 110 | $this->_registered = TRUE; |
| 111 | } |
| 112 | |
| 113 | function loadClass($class) { |
| 114 | if ( |
| 115 | // Only load classes that clearly belong to CiviCRM. |
| 116 | 0 === strncmp($class, 'CRM_', 4) && |
| 117 | // Do not load PHP 5.3 namespaced classes. |
| 118 | // (in a future version, maybe) |
| 119 | FALSE === strpos($class, '\\') |
| 120 | ) { |
| 121 | $file = strtr($class, '_', '/') . '.php'; |
| 122 | // There is some question about the best way to do this. |
| 123 | // "require_once" is nice because it's simple and throws |
| 124 | // intelligible errors. The down side is that autoloaders |
| 125 | // down the chain cannot try to find the file if we fail. |
| 126 | require_once ($file); |
| 127 | } |
| 128 | } |
| 129 | } |
| 130 | |