CRM/Utils/JS.php

   1 <?php
   2
   3 /*
   4 +--------------------------------------------------------------------+
   5 | CiviCRM version 4.5                                                |
   6 +--------------------------------------------------------------------+
   7 | Copyright CiviCRM LLC (c) 2004-2014                                |
   8 +--------------------------------------------------------------------+
   9 | This file is a part of CiviCRM.                                    |
  10 |                                                                    |
  11 | CiviCRM is free software; you can copy, modify, and distribute it  |
  12 | under the terms of the GNU Affero General Public License           |
  13 | Version 3, 19 November 2007 and the CiviCRM Licensing Exception.   |
  14 |                                                                    |
  15 | CiviCRM is distributed in the hope that it will be useful, but     |
  16 | WITHOUT ANY WARRANTY; without even the implied warranty of         |
  17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
  18 | See the GNU Affero General Public License for more details.        |
  19 |                                                                    |
  20 | You should have received a copy of the GNU Affero General Public   |
  21 | License and the CiviCRM Licensing Exception along                  |
  22 | with this program; if not, contact CiviCRM LLC                     |
  23 | at info[AT]civicrm[DOT]org. If you have questions about the        |
  24 | GNU Affero General Public License or the licensing of CiviCRM,     |
  25 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
  26 +--------------------------------------------------------------------+
  27 */
  28
  29 /**
  30  * Parse Javascript content and extract translatable strings.
  31  *
  32  * @package CRM
  33  * @copyright CiviCRM LLC (c) 2004-2014
  34  * $Id$
  35  *
  36  */
  37 class CRM_Utils_JS {
  38   /**
  39    * Parse a javascript file for translatable strings
  40    *
  41    * @param string $jsCode raw Javascript code
  42    * @return array of translatable strings
  43    */
  44   public static function parseStrings($jsCode) {
  45     $strings = array();
  46     // Match all calls to ts() in an array.
  47     // Note: \s also matches newlines with the 's' modifier.
  48     preg_match_all('~
  49       [^\w]ts\s*                                    # match "ts" with whitespace
  50       \(\s*                                         # match "(" argument list start
  51       ((?:(?:\'(?:\\\\\'|[^\'])*\'|"(?:\\\\"|[^"])*")(?:\s*\+\s*)?)+)\s*
  52       [,\)]                                         # match ")" or "," to finish
  53       ~sx', $jsCode, $matches);
  54     foreach ($matches[1] as $text) {
  55       $quote = $text[0];
  56       // Remove newlines
  57       $text = str_replace("\\\n", '', $text);
  58       // Unescape escaped quotes
  59       $text = str_replace('\\' . $quote, $quote, $text);
  60       // Remove end quotes
  61       $text = substr(ltrim($text, $quote), 0, -1);
  62       $strings[$text] = $text;
  63     }
  64     return array_values($strings);
  65   }
  66 }