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<?php
/**
*
* Parses for italic text.
*
* This class implements a Text_Wiki_Parse to find source text marked for
* superscript as defined by text surrounded by two '^'.
* On parsing, the text itself is left in place, but the starting and ending
* instances of two '^' are replaced with tokens.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
* @author Michele Tomaiuolo <tomamic@yahoo.it>
*
*/
class Text_Wiki_Parse_Superscript extends Text_Wiki_Parse {
/**
*
* The regular expression used to parse the source text and find
* matches conforming to this rule. Used by the parse() method.
*
* @access public
*
* @var string
*
* @see parse()
*
*/
var $regex = "/(\^\^(.*?)\^\^|(?<=\d)(st|nd|rd|th|er|e|re|ers|res|nds|de|des|ère|ème|ères|èmes|o|a)(?!\w))/";
/**
*
* Generates a replacement for the matched text. Token options are:
*
* 'type' => ['start'|'end'] The starting or ending point of the
* superscript text. The text itself is left in the source.
*
* @access public
*
* @param array &$matches The array of matches from parse().
*
* @return string A pair of delimited tokens to be used as a
* placeholder in the source text surrounding the text to be
* superscripted.
*
*/
function process(&$matches)
{
if (! $this->wiki->checkInnerTags($matches[0])) {
return $matches[0];
}
$start = $this->wiki->addToken(
$this->rule,
array('type' => 'start')
);
$end = $this->wiki->addToken(
$this->rule,
array('type' => 'end')
);
return $start . trim($matches[0], '^') . $end;
}
}
?>
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