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<?php
/**
*
* Parses for definition lists.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
* @license LGPL
*
* @version $Id: Deflist.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $
*
*/
/**
*
* Parses for definition lists.
*
* This class implements a Text_Wiki_Parse to find source text marked as a
* definition list. In short, if a line starts with ':' then it is a
* definition list item; another ':' on the same line indicates the end
* of the definition term and the beginning of the definition narrative.
* The list items must be on sequential lines (no blank lines between
* them) -- a blank line indicates the beginning of a new list.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
*/
class Text_Wiki_Parse_Deflist 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 $regex = '/\n((: ).*\n)(?!(: |\n))/Us';
/**
*
* Generates a replacement for the matched text. Token options are:
*
* 'type' =>
* 'list_start' : the start of a definition list
* 'list_end' : the end of a definition list
* 'term_start' : the start of a definition term
* 'term_end' : the end of a definition term
* 'narr_start' : the start of definition narrative
* 'narr_end' : the end of definition narrative
* 'unknown' : unknown type of definition portion
*
* @access public
*
* @param array &$matches The array of matches from parse().
*
* @return A series of text and delimited tokens marking the different
* list text and list elements.
*
*/
function process(&$matches)
{
// the replacement text we will return to parse()
$return = '';
// the list of post-processing matches
$list = array();
// start the deflist
$options = array('type' => 'list_start');
$return .= $this->wiki->addToken($this->rule, $options);
// $matches[1] is the text matched as a list set by parse();
// create an array called $list that contains a new set of
// matches for the various definition-list elements.
preg_match_all(
'/^(: )(.*)?( : )(.*)?$/Ums',
$matches[1],
$list,
PREG_SET_ORDER
);
// add each term and narrative
foreach ($list as $key => $val) {
$return .= (
$this->wiki->addToken($this->rule, array('type' => 'term_start')) .
trim($val[2]) .
$this->wiki->addToken($this->rule, array('type' => 'term_end')) .
$this->wiki->addToken($this->rule, array('type' => 'narr_start')) .
trim($val[4]) .
$this->wiki->addToken($this->rule, array('type' => 'narr_end'))
);
}
// end the deflist
$options = array('type' => 'list_end');
$return .= $this->wiki->addToken($this->rule, $options);
// done!
return "\n" . $return . "\n\n";
}
}
?>
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