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<?php
/**
*
* Parses for heading text.
*
* This class implements a Text_Wiki_Parse to find source text marked to
* be a heading element, as defined by text on a line by itself prefixed
* with a number of equasl signs (=), determining the heading level.
* Equal signs at the end of the line are silently removed.
* The heading text itself is left in the source, but is prefixed and
* suffixed with delimited tokens marking the start and end of the heading.
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
* @author Tomaiuolo Michele <tomamic@yahoo.it>
*
* @license LGPL
*
* @version $Id: Heading.php 228641 2007-02-01 09:57:36Z mic $
*
*/
class Text_Wiki_Parse_Heading 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 $regex = '/^(={1,6}) *(.*?) *=*$/m';
var $conf = array(
'id_prefix' => 'toc'
);
/**
*
* Generates a replacement for the matched text. Token options are:
*
* 'type' => ['start'|'end'] The starting or ending point of the
* heading text. The text itself is left in the source.
*
* @access public
*
* @param array &$matches The array of matches from parse().
*
* @return string A pair of delimited tokens to be used as a
* placeholder in the source text surrounding the heading text.
*
*/
function process(&$matches)
{
// keep a running count for header IDs. we use this later
// when constructing TOC entries, etc.
static $id;
if (! isset($id)) {
$id = 0;
}
$prefix = htmlspecialchars($this->getConf('id_prefix'));
$start = $this->wiki->addToken(
$this->rule,
array(
'type' => 'start',
'level' => strlen($matches[1]),
'text' => trim($matches[2]),
'id' => $prefix . $id ++
)
);
$end = $this->wiki->addToken(
$this->rule,
array(
'type' => 'end',
'level' => strlen($matches[1])
)
);
return $start . trim($matches[2]) . $end . "\n\n";
}
}
?>
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