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<?php
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// vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:
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/**
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* Mediawiki: Parses for emphazised text.
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*
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* Text_Wiki rule parser to find source text emphazised
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* as defined by text surrounded by repeated single quotes ''...'' and more
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* Translated are ''emphasis'' , '''strong''' or '''''both''''' ...
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*
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* PHP versions 4 and 5
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*
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* @category Text
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* @package Text_Wiki
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* @author Bertrand Gugger <bertrand@toggg.com>
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* @author Paul M. Jones <pmjones@php.net>
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* @copyright 2005 bertrand Gugger
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Emphasis.php,v 1.4 2006/02/15 12:27:40 toggg Exp $
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* @link http://pear.php.net/package/Text_Wiki
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*/
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/**
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* Emphazised text rule parser class for Mediawiki. Makes Emphasis, Strong or both
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* This class implements a Text_Wiki_Parse to find source text marked for
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* emphasis, stronger and very as defined by text surrounded by 2,3 or 5 single-quotes.
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* On parsing, the text itself is left in place, but the starting and ending
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* instances of the single-quotes are replaced with tokens.
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*
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* @category Text
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* @package Text_Wiki
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* @author Bertrand Gugger <bertrand@toggg.com>
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* @copyright 2005 bertrand Gugger
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Text_Wiki
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* @see Text_Wiki_Parse::Text_Wiki_Parse()
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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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* 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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* We match '' , ''' or ''''' embeded texts
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*
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* @access public
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* @var string
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* @see Text_Wiki_Parse::parse()
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*/
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var $regex = "/(?<!')'('{1,4})(.*?)\\1'(?!')/";
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/**
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* Generates a replacement for the matched text. Token options are:
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* - 'type' => ['start'|'end'] The starting or ending point of the emphasized text.
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* Generated tokens are Emphasis (this rule), Strong or Emphasis / Strong
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* The text itself is left in the source but may content bested blocks
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*
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* @access public
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* @param array &$matches The array of matches from parse().
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* @return string Delimited by start/end tokens to be used as
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* placeholder in the source text surrounding the text to be emphasized.
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*/
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function process(&$matches)
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{
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$embeded = $matches[2];
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switch (strlen($matches[1])) {
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case 1:
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$start = $this->wiki->addToken($this->rule, array('type' => 'start'));
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$end = $this->wiki->addToken($this->rule, array('type' => 'end'));
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break;
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case 3:
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$embeded = "'" . $embeded . "'";
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case 2:
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$start = $this->wiki->addToken('Strong', array('type' => 'start'));
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$end = $this->wiki->addToken('Strong', array('type' => 'end'));
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break;
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case 4:
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$start = $this->wiki->addToken($this->rule, array('type' => 'start'))
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. $this->wiki->addToken('Strong', array('type' => 'start'));
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$end = $this->wiki->addToken('Strong', array('type' => 'end'))
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. $this->wiki->addToken($this->rule, array('type' => 'end'));
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break;
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}
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return $start . $embeded . $end;
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}
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}
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?>
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