include/Text/Wiki/Parse/Default/Strong.php

   1 <?php
   2
   3 /**
   4 *
   5 * Parses for strongly-emphasized text.
   6 *
   7 * @category Text
   8 *
   9 * @package Text_Wiki
  10 *
  11 * @author Paul M. Jones <pmjones@php.net>
  12 *
  13 * @license LGPL
  14 *
  15 * @version $Id: Strong.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $
  16 *
  17 */
  18
  19
  20 /**
  21 *
  22 * Parses for strongly-emphasized text.
  23 *
  24 * This class implements a Text_Wiki_Parse to find source text marked for
  25 * strong emphasis (bold) as defined by text surrounded by three
  26 * single-quotes. On parsing, the text itself is left in place, but the
  27 * starting and ending instances of three single-quotes are replaced with
  28 * tokens.
  29 *
  30 * @category Text
  31 *
  32 * @package Text_Wiki
  33 *
  34 * @author Paul M. Jones <pmjones@php.net>
  35 *
  36 */
  37
  38 class Text_Wiki_Parse_Strong extends Text_Wiki_Parse {
  39
  40
  41     /**
  42     *
  43     * The regular expression used to parse the source text and find
  44     * matches conforming to this rule.  Used by the parse() method.
  45     *
  46     * @access public
  47     *
  48     * @var string
  49     *
  50     * @see parse()
  51     *
  52     */
  53
  54     // original
  55     // var $regex =  "/\*\*(.*?)\*\*/";
  56
  57     // alternatives:
  58     // var $regex = "/\*\*(()|[^\n]*)\*\*/U";
  59     var $regex = "/\*\*(()|.*)\*\*/U";
  60
  61     /**
  62     *
  63     * Generates a replacement for the matched text.  Token options are:
  64     *
  65     * 'type' => ['start'|'end'] The starting or ending point of the
  66     * emphasized text.  The text itself is left in the source.
  67     *
  68     * @access public
  69     *
  70     * @param array &$matches The array of matches from parse().
  71     *
  72     * @return A pair of delimited tokens to be used as a placeholder in
  73     * the source text surrounding the text to be emphasized.
  74     *
  75     */
  76
  77     function process(&$matches)
  78     {
  79         $start = $this->wiki->addToken(
  80             $this->rule, array('type' => 'start')
  81         );
  82
  83         $end = $this->wiki->addToken(
  84             $this->rule, array('type' => 'end')
  85         );
  86
  87         return $start . $matches[1] . $end;
  88     }
  89 }
  90 ?>