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78 lines
1.9 KiB
PHP
78 lines
1.9 KiB
PHP
<?php
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/**
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*
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* Parses for italic text.
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*
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* This class implements a Text_Wiki_Parse to find source text marked for
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* emphasis (italics) as defined by text surrounded by two slashes.
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* On parsing, the text itself is left in place, but the starting and ending
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* instances of two single-quotes are replaced with tokens.
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*
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* @category Text
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*
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* @package Text_Wiki
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*
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* @author Paul M. Jones <pmjones@php.net>
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* @author Michele Tomaiuolo <tomamic@yahoo.it>
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*
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*/
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class Text_Wiki_Parse_Emphasis extends Text_Wiki_Parse {
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/**
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*
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* The regular expression used to parse the source text and find
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* matches conforming to this rule. Used by the parse() method.
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*
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* @access public
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*
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* @var string
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*
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* @see parse()
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*
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*/
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//var $regex = "/\/\/(.*?)\/\//";
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var $regex = "/(?:\/\/(.+?)\/\/|(?:(?<=[\W_\xFF])\/(?![ \/]))(.+?)(?:(?<![ \/])\/(?=[\W_\xFF])))/";
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/**
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*
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* Generates a replacement for the matched text. Token options are:
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*
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* 'type' => ['start'|'end'] The starting or ending point of the
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* emphasized text. The text itself is left in the source.
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*
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* @access public
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*
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* @param array &$matches The array of matches from parse().
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*
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* @return string A pair of delimited tokens to be used as a
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* placeholder in the source text surrounding the text to be
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* emphasized.
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*
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*/
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function process(&$matches)
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{
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$text = $matches[1] ? $matches[1] : $matches[2];
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if (! $this->wiki->checkInnerTags($text)) {
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return $matches[0];
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}
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$start = $this->wiki->addToken(
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$this->rule,
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array('type' => 'start')
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);
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$end = $this->wiki->addToken(
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$this->rule,
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array('type' => 'end')
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);
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return $start . $text . $end;
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}
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}
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?>
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