| 1 | <?php |
| 2 | /* |
| 3 | +--------------------------------------------------------------------+ |
| 4 | | CiviCRM version 4.5 | |
| 5 | +--------------------------------------------------------------------+ |
| 6 | | Copyright CiviCRM LLC (c) 2004-2014 | |
| 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) 2004-2014 |
| 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 | /** |
| 47 | * @param bool $force |
| 48 | * |
| 49 | * @return object |
| 50 | */ |
| 51 | static function &singleton($force = FALSE) { |
| 52 | if ($force || self::$_singleton === NULL) { |
| 53 | self::$_singleton = new CRM_Core_ClassLoader(); |
| 54 | } |
| 55 | return self::$_singleton; |
| 56 | } |
| 57 | |
| 58 | /** |
| 59 | * @var bool TRUE if previously registered |
| 60 | */ |
| 61 | protected $_registered; |
| 62 | |
| 63 | /** |
| 64 | * |
| 65 | */ |
| 66 | protected function __construct() { |
| 67 | $this->_registered = FALSE; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Registers this instance as an autoloader. |
| 72 | * |
| 73 | * @param Boolean $prepend Whether to prepend the autoloader or not |
| 74 | * |
| 75 | * @api |
| 76 | */ |
| 77 | function register($prepend = FALSE) { |
| 78 | if ($this->_registered) { |
| 79 | return; |
| 80 | } |
| 81 | $civicrm_base_path = dirname(dirname(__DIR__)); |
| 82 | |
| 83 | require_once dirname(dirname(__DIR__)) . '/packages/vendor/autoload.php'; |
| 84 | |
| 85 | // we do this to prevent a autoloader errors with joomla / 3rd party packages |
| 86 | // use absolute path since we dont know the content of include_path as yet |
| 87 | // CRM-11304 |
| 88 | // TODO Remove this autoloader. For civicrm-core and civicrm-packages, the composer autoloader works fine. |
| 89 | // Extensions rely on include_path-based autoloading |
| 90 | spl_autoload_register(array($this, 'loadClass'), TRUE, $prepend); |
| 91 | $this->initHtmlPurifier($prepend); |
| 92 | |
| 93 | $this->_registered = TRUE; |
| 94 | $packages_path = implode(DIRECTORY_SEPARATOR, array($civicrm_base_path, 'packages')); |
| 95 | $include_paths = array( |
| 96 | '.', |
| 97 | $civicrm_base_path, |
| 98 | $packages_path |
| 99 | ); |
| 100 | $include_paths = implode(PATH_SEPARATOR, $include_paths); |
| 101 | set_include_path($include_paths . PATH_SEPARATOR . get_include_path()); |
| 102 | require_once "$civicrm_base_path/packages/vendor/autoload.php"; |
| 103 | } |
| 104 | |
| 105 | function initHtmlPurifier($prepend) { |
| 106 | if (class_exists('HTMLPurifier_Bootstrap')) { |
| 107 | // HTMLPurifier is already initialized, e.g. by the Drupal module. |
| 108 | return; |
| 109 | } |
| 110 | |
| 111 | $htmlPurifierPath = $this->getHtmlPurifierPath(); |
| 112 | |
| 113 | if (FALSE === $htmlPurifierPath) { |
| 114 | // No HTMLPurifier available, e.g. during installation. |
| 115 | return; |
| 116 | } |
| 117 | require_once $htmlPurifierPath; |
| 118 | spl_autoload_register(array('HTMLPurifier_Bootstrap', 'autoload'), TRUE, $prepend); |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * @return string|false |
| 123 | * Path to the file where the class HTMLPurifier_Bootstrap is defined, or |
| 124 | * FALSE, if such a file does not exist. |
| 125 | */ |
| 126 | private function getHtmlPurifierPath() { |
| 127 | if (function_exists('libraries_get_path') |
| 128 | && ($path = libraries_get_path('htmlpurifier')) |
| 129 | && file_exists($file = $path . '/library/HTMLPurifier/Bootstrap.php') |
| 130 | ) { |
| 131 | // We are in Drupal 7, and the HTMLPurifier module is installed. |
| 132 | // Use Drupal's HTMLPurifier path, to avoid conflicts. |
| 133 | // @todo Verify that we are really in Drupal 7, and not in some other |
| 134 | // environment that happens to provide a 'libraries_get_path()' function. |
| 135 | return $file; |
| 136 | } |
| 137 | |
| 138 | // we do this to prevent a autoloader errors with joomla / 3rd party packages |
| 139 | // Use absolute path, since we don't know the content of include_path yet. |
| 140 | // CRM-11304 |
| 141 | $file = dirname(__FILE__) . '/../../packages/IDS/vendors/htmlpurifier/HTMLPurifier/Bootstrap.php'; |
| 142 | if (file_exists($file)) { |
| 143 | return $file; |
| 144 | } |
| 145 | |
| 146 | return FALSE; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * @param $class |
| 151 | */ |
| 152 | function loadClass($class) { |
| 153 | if ( |
| 154 | // Only load classes that clearly belong to CiviCRM. |
| 155 | 0 === strncmp($class, 'CRM_', 4) && |
| 156 | // Do not load PHP 5.3 namespaced classes. |
| 157 | // (in a future version, maybe) |
| 158 | FALSE === strpos($class, '\\') |
| 159 | ) { |
| 160 | $file = strtr($class, '_', '/') . '.php'; |
| 161 | // There is some question about the best way to do this. |
| 162 | // "require_once" is nice because it's simple and throws |
| 163 | // intelligible errors. The down side is that autoloaders |
| 164 | // down the chain cannot try to find the file if we fail. |
| 165 | require_once ($file); |
| 166 | } |
| 167 | } |
| 168 | } |