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<?php
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// $Id: Code.php,v 1.1 2004-11-24 19:43:09 jpm Exp $
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/**
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*
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* This class implements a Text_Wiki_Parse to find sections marked as code
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* examples.  Blocks are marked as the string <code> on a line by itself,
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* followed by the inline code example, and terminated with the string
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* </code> on a line by itself.  The code example is run through the
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* native PHP highlight_string() function to colorize it, then surrounded
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* with <pre>...</pre> tags when rendered as XHTML.
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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_Code 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 = '/^(%%\((\w*?)\))(.+?)(%%)(\s|$)/Umsi';
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    /**
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    *
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    * Generates a token entry for the matched text.  Token options are:
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    *
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    * 'text' => The full matched text, not including the <code></code> tags.
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    *
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    * @access public
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    *
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    * @param array &$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(&$matches)
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    {
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        if ($matches[2] == '') {
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            $code = $this->wiki->addToken(
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                    $this->rule,
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                    array(
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                        'text' => $matches[3],
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                        'attr' => array('type' => '')
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                    )
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                );
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        } else {
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            $code = $this->wiki->addToken(
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                    $this->rule,
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                    array(
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                        'text' => $matches[3],
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                        'attr' => array('type' => $matches[2])
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                    )
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                );
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        }
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        return $code . $matches[5];
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    }
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}
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?>