[Sommaire] [Imprimer]

   1  <?php
   2  /* vim: set expandtab tabstop=4 shiftwidth=4: */
   3  // +----------------------------------------------------------------------+
   4  // | PHP version 4                                                        |
   5  // +----------------------------------------------------------------------+
   6  // | Copyright (c) 1997-2003 The PHP Group                                |
   7  // +----------------------------------------------------------------------+
   8  // | This source file is subject to version 2.0 of the PHP license,       |
   9  // | that is bundled with this package in the file LICENSE, and is        |
  10  // | available through the world-wide-web at                              |
  11  // | http://www.php.net/license/2_02.txt.                                 |
  12  // | If you did not receive a copy of the PHP license and are unable to   |
  13  // | obtain it through the world-wide-web, please send a note to          |
  14  // | license@php.net so we can mail you a copy immediately.               |
  15  // +----------------------------------------------------------------------+
  16  // | Authors: Paul M. Jones <pmjones@ciaweb.net>                          |
  17  // +----------------------------------------------------------------------+
  18  //
  19  // $Id: prefilter.php,v 1.3 2004/12/02 10:54:32 nohn Exp $
  20  
  21  
  22  /**
  23  * 
  24  * This class implements a Text_Wiki_Rule to "pre-filter" source text so
  25  * that line endings are consistently \n, lines ending in a backslash \
  26  * are concatenated with the next line, and tabs are converted to spaces.
  27  *
  28  * @author Paul M. Jones <pmjones@ciaweb.net>
  29  *
  30  * @package Text_Wiki
  31  *
  32  */
  33  
  34  class Text_Wiki_Rule_prefilter extends Text_Wiki_Rule {
  35      
  36      
  37      /**
  38      * 
  39      * Simple parsing method to apply the rule directly to the source
  40      * text.
  41      *
  42      * @access public
  43      * 
  44      */
  45      
  46      function parse()
  47      {
  48          // convert DOS line endings
  49          $this->_wiki->_source = str_replace("\r\n", "\n",
  50              $this->_wiki->_source);
  51          
  52          // convert Macintosh line endings
  53          $this->_wiki->_source = str_replace("\r", "\n",
  54              $this->_wiki->_source);
  55          
  56          // concat lines ending in a backslash
  57          $this->_wiki->_source = str_replace("\\\n", "",
  58              $this->_wiki->_source);
  59          
  60          // convert tabs to spaces
  61          $this->_wiki->_source = str_replace("\t", "    ",
  62              $this->_wiki->_source);
  63             
  64          // add extra newlines at the top and end; this
  65          // seems to help many rules.
  66          $this->_wiki->_source = "\n" . $this->_wiki->_source . "\n\n";
  67          
  68          // finally, compress all instances of 3 or more newlines
  69          // down to two newlines.
  70          $find = "/\n{3,}/m";
  71          $replace = "\n\n";
  72          $this->_wiki->_source = preg_replace($find, $replace,
  73              $this->_wiki->_source);
  74      }
  75  
  76  }
  77  ?>