<?php
+/**
+ * Holder for stripped items when parsing wiki markup.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Parser
+ */
/**
* @todo document, briefly.
protected $regex;
protected $tempType, $tempMergePrefix;
+ protected $circularRefGuard;
+ protected $recursionLevel = 0;
+
+ const UNSTRIP_RECURSION_LIMIT = 20;
+ /**
+ * @param $prefix string
+ */
function __construct( $prefix ) {
$this->prefix = $prefix;
$this->data = array(
'general' => array()
);
$this->regex = "/{$this->prefix}([^\x7f]+)" . Parser::MARKER_SUFFIX . '/';
+ $this->circularRefGuard = array();
}
/**
}
wfProfileIn( __METHOD__ );
+ $oldType = $this->tempType;
$this->tempType = $type;
- do {
- $oldText = $text;
- $text = preg_replace_callback( $this->regex, array( $this, 'unstripCallback' ), $text );
- } while ( $text !== $oldText );
- $this->tempType = null;
+ $text = preg_replace_callback( $this->regex, array( $this, 'unstripCallback' ), $text );
+ $this->tempType = $oldType;
wfProfileOut( __METHOD__ );
return $text;
}
* @return array
*/
protected function unstripCallback( $m ) {
- if ( isset( $this->data[$this->tempType][$m[1]] ) ) {
- return $this->data[$this->tempType][$m[1]];
+ $marker = $m[1];
+ if ( isset( $this->data[$this->tempType][$marker] ) ) {
+ if ( isset( $this->circularRefGuard[$marker] ) ) {
+ return '<span class="error">'
+ . wfMessage( 'parser-unstrip-loop-warning' )->inContentLanguage()->text()
+ . '</span>';
+ }
+ if ( $this->recursionLevel >= self::UNSTRIP_RECURSION_LIMIT ) {
+ return '<span class="error">' .
+ wfMessage( 'parser-unstrip-recursion-limit' )
+ ->numParams( self::UNSTRIP_RECURSION_LIMIT )->inContentLanguage()->text() .
+ '</span>';
+ }
+ $this->circularRefGuard[$marker] = true;
+ $this->recursionLevel++;
+ $ret = $this->unstripType( $this->tempType, $this->data[$this->tempType][$marker] );
+ $this->recursionLevel--;
+ unset( $this->circularRefGuard[$marker] );
+ return $ret;
} else {
return $m[0];
}
return $texts;
}
+ /**
+ * @param $m
+ * @return string
+ */
protected function mergeCallback( $m ) {
$key = $m[1];
return "{$this->prefix}{$this->tempMergePrefix}-$key" . Parser::MARKER_SUFFIX;
}
+
+ /**
+ * Remove any strip markers found in the given text.
+ *
+ * @param $text Input string
+ * @return string
+ */
+ function killMarkers( $text ) {
+ return preg_replace( $this->regex, '', $text );
+ }
}