1 <?php

     2 

     3 /**

     4 * 

     5 * Parses for italic 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: Italic.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $

    16 * 

    17 */

    18 

    19 /**

    20 * 

    21 * Parses for italic text.

    22 * 

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

    24 * emphasis (italics) as defined by text surrounded by two single-quotes.

    25 * On parsing, the text itself is left in place, but the starting and ending

    26 * instances of two single-quotes are replaced with tokens.

    27 *

    28 * @category Text

    29 * 

    30 * @package Text_Wiki

    31 * 

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

    33 * 

    34 */

    35 

    36 class Text_Wiki_Parse_Italic extends Text_Wiki_Parse {

    37     

    38     

    39     /**

    40     * 

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

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

    43     * 

    44     * @access public

    45     * 

    46     * @var string

    47     * 

    48     * @see parse()

    49     * 

    50     */

    51     

    52     var $regex = "/''(()|[^'].*)''/U";

    53     

    54     

    55     /**

    56     * 

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

    58     * 

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

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

    61     * 

    62     * @access public

    63     *

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

    65     *

    66     * @return string A pair of delimited tokens to be used as a

    67     * placeholder in the source text surrounding the text to be

    68     * emphasized.

    69     *

    70     */

    71     

    72     function process(&$matches)

    73     {

    74         $start = $this->wiki->addToken(

    75             $this->rule, array('type' => 'start')

    76         );

    77         

    78         $end = $this->wiki->addToken(

    79             $this->rule, array('type' => 'end')

    80         );

    81         

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

    83     }

    84 }

    85 ?>