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<?php
/**
*
* Looks through parsed text and builds a table of contents.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
* @license LGPL
*
* @version $Id: Toc.php,v 1.4 2005/05/28 21:33:02 pmjones Exp $
*
*/
/**
*
* Looks through parsed text and builds a table of contents.
*
* This class implements a Text_Wiki_Parse to find all heading tokens and
* build a table of contents. The [[toc]] tag gets replaced with a list
* of all the level-2 through level-6 headings.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
*/
class Text_Wiki_Parse_Toc 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\[\[toc( .*)?\]\]\n/m";
/**
*
* Generates a replacement for the matched text.
*
* Token options are:
*
* 'type' => ['list_start'|'list_end'|'item_start'|'item_end'|'target']
*
* 'level' => The heading level (1-6).
*
* 'count' => Which entry number this is in the list.
*
* @access public
*
* @param array &$matches The array of matches from parse().
*
* @return string A token indicating the TOC collection point.
*
*/
function process(&$matches)
{
$count = 0;
if (isset($matches[1])) {
$attr = $this->getAttrs(trim($matches[1]));
} else {
$attr = array();
}
$output = $this->wiki->addToken(
$this->rule,
array(
'type' => 'list_start',
'level' => 0,
'attr' => $attr
)
);
foreach ($this->wiki->getTokens('Heading') as $key => $val) {
if ($val[1]['type'] != 'start') {
continue;
}
$options = array(
'type' => 'item_start',
'id' => $val[1]['id'],
'level' => $val[1]['level'],
'count' => $count ++
);
$output .= $this->wiki->addToken($this->rule, $options);
$output .= $val[1]['text'];
$output .= $this->wiki->addToken(
$this->rule,
array(
'type' => 'item_end',
'level' => $val[1]['level']
)
);
}
$output .= $this->wiki->addToken(
$this->rule, array(
'type' => 'list_end',
'level' => 0
)
);
return "\n$output\n";
}
}
?>
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