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<?php
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// $Id: Center.php,v 1.1 2005-01-20 19:43:20 jpm Exp $
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/**
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*
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* This class implements a Text_Wiki_Parse to find lines marked for centering.
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* The line must start with "= " (i.e., an equal-sign followed by a space).
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*
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* @author Paul M. Jones <pmjones@ciaweb.net>
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*
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* @package Text_Wiki
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*
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*/
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class Text_Wiki_Parse_Center extends Text_Wiki_Parse {
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    /**
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    *
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    * The regular expression used to find source text matching this
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    * rule.
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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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    */
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    var $regex = '/\n\= (.*?)\n/';
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    /**
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    *
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    * Generates a token entry for the matched text.
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    *
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    * @access public
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    *
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    * @param array &$matches The array of matches from parse().
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    *
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    * @return A delimited token number to be used as a placeholder in
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    * the source text.
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    *
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    */
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    function process(&$matches)
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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 "\n" . $start . $matches[1] . $end . "\n";
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    }
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}
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?>