1 <?php

     2 

     3 /**

     4 * 

     5 * Parses for bold 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: Underline.php,v 1.1 2005/07/10 20:40:20 justinpatrin Exp $

    16 * 

    17 */

    18 

    19 /**

    20 * 

    21 * Parses for bold text.

    22 * 

    23 * This class implements a Text_Wiki_Rule to find source text marked for

    24 * strong emphasis (bold) as defined by text surrounded by three

    25 * single-quotes. On parsing, the text itself is left in place, but the

    26 * starting and ending instances of three single-quotes are replaced with

    27 * tokens.

    28 *

    29 * @category Text

    30 * 

    31 * @package Text_Wiki

    32 * 

    33 * @author Paul M. Jones <pmjones@php.net>

    34 * 

    35 */

    36 

    37 class Text_Wiki_Parse_Underline extends Text_Wiki_Parse {

    38     

    39     

    40     /**

    41     * 

    42     * The regular expression used to parse the source text and find

    43     * matches conforming to this rule.  Used by the parse() method.

    44     * 

    45     * @access public

    46     * 

    47     * @var string

    48     * 

    49     * @see parse()

    50     * 

    51     */

    52     

    53     var $regex =  "/__(()|[^_].*)__/U";

    54     

    55     

    56     /**

    57     * 

    58     * Generates a replacement for the matched text.  Token options are:

    59     * 

    60     * 'type' => ['start'|'end'] The starting or ending point of the

    61     * emphasized text.  The text itself is left in the source.

    62     * 

    63     * @access public

    64     *

    65     * @param array &$matches The array of matches from parse().

    66     *

    67     * @return A pair of delimited tokens to be used as a placeholder in

    68     * the source text surrounding the text to be emphasized.

    69     *

    70     */

    71     

    72     function process(&$matches)

    73     {

    74         $start = $this->wiki->addToken($this->rule, array('type' => 'start'));

    75         $end = $this->wiki->addToken($this->rule, array('type' => 'end'));

    76         return $start . $matches[1] . $end;

    77     }

    78 }

    79 ?>