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<?php
/**
*
* Parses for text marked as revised (insert/delete).
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
* @license LGPL
*
* @version $Id: Revise.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $
*
*/
/**
*
* Parses for text marked as revised (insert/delete).
*
* @category Text
*
* @package Text_Wiki
*
* @author Paul M. Jones <pmjones@php.net>
*
*/
class Text_Wiki_Parse_Revise 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 = "/\@\@({*?.*}*?)\@\@/U";
/**
*
* Config options.
*
* @access public
*
* @var array
*
*/
var $conf = array(
'delmark' => '---',
'insmark' => '+++'
);
/**
*
* Generates a replacement for the matched text. Token options are:
*
* 'type' => ['start'|'end'] The starting or ending point of the
* inserted text. The text itself is left in the source.
*
* @access public
*
* @param array &$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 teletype text.
*
*/
function process(&$matches)
{
$output = '';
$src = $matches[1];
$delmark = $this->getConf('delmark'); // ---
$insmark = $this->getConf('insmark'); // +++
// '---' must be before '+++' (if they both appear)
$del = strpos($src, $delmark);
$ins = strpos($src, $insmark);
// if neither is found, return right away
if ($del === false && $ins === false) {
return $matches[0];
}
// handle text to be deleted
if ($del !== false) {
// move forward to the end of the deletion mark
$del += strlen($delmark);
if ($ins === false) {
// there is no insertion text following
$text = substr($src, $del);
} else {
// there is insertion text following,
// mitigate the length
$text = substr($src, $del, $ins - $del);
}
$output .= $this->wiki->addToken(
$this->rule, array('type' => 'del_start')
);
$output .= $text;
$output .= $this->wiki->addToken(
$this->rule, array('type' => 'del_end')
);
}
// handle text to be inserted
if ($ins !== false) {
// move forward to the end of the insert mark
$ins += strlen($insmark);
$text = substr($src, $ins);
$output .= $this->wiki->addToken(
$this->rule, array('type' => 'ins_start')
);
$output .= $text;
$output .= $this->wiki->addToken(
$this->rule, array('type' => 'ins_end')
);
}
return $output;
}
}
?>
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