+
+ static function normalizeSubpageLink( $contextTitle, $target, &$text ) {
+ # Valid link forms:
+ # Foobar -- normal
+ # :Foobar -- override special treatment of prefix (images, language links)
+ # /Foobar -- convert to CurrentPage/Foobar
+ # /Foobar/ -- convert to CurrentPage/Foobar, strip the initial / from text
+ # ../ -- convert to CurrentPage, from CurrentPage/CurrentSubPage
+ # ../Foobar -- convert to CurrentPage/Foobar, from CurrentPage/CurrentSubPage
+
+ wfProfileIn( __METHOD__ );
+ $ret = $target; # default return value is no change
+
+ # Some namespaces don't allow subpages,
+ # so only perform processing if subpages are allowed
+ if( $contextTitle && MWNamespace::hasSubpages( $contextTitle->getNamespace() ) ) {
+ $hash = strpos( $target, '#' );
+ if( $hash !== false ) {
+ $suffix = substr( $target, $hash );
+ $target = substr( $target, 0, $hash );
+ } else {
+ $suffix = '';
+ }
+ # bug 7425
+ $target = trim( $target );
+ # Look at the first character
+ if( $target != '' && $target{0} === '/' ) {
+ # / at end means we don't want the slash to be shown
+ $m = array();
+ $trailingSlashes = preg_match_all( '%(/+)$%', $target, $m );
+ if( $trailingSlashes ) {
+ $noslash = $target = substr( $target, 1, -strlen($m[0][0]) );
+ } else {
+ $noslash = substr( $target, 1 );
+ }
+
+ $ret = $contextTitle->getPrefixedText(). '/' . trim($noslash) . $suffix;
+ if( '' === $text ) {
+ $text = $target . $suffix;
+ } # this might be changed for ugliness reasons
+ } else {
+ # check for .. subpage backlinks
+ $dotdotcount = 0;
+ $nodotdot = $target;
+ while( strncmp( $nodotdot, "../", 3 ) == 0 ) {
+ ++$dotdotcount;
+ $nodotdot = substr( $nodotdot, 3 );
+ }
+ if($dotdotcount > 0) {
+ $exploded = explode( '/', $contextTitle->GetPrefixedText() );
+ if( count( $exploded ) > $dotdotcount ) { # not allowed to go below top level page
+ $ret = implode( '/', array_slice( $exploded, 0, -$dotdotcount ) );
+ # / at the end means don't show full path
+ if( substr( $nodotdot, -1, 1 ) === '/' ) {
+ $nodotdot = substr( $nodotdot, 0, -1 );
+ if( '' === $text ) {
+ $text = $nodotdot . $suffix;
+ }
+ }
+ $nodotdot = trim( $nodotdot );
+ if( $nodotdot != '' ) {
+ $ret .= '/' . $nodotdot;
+ }
+ $ret .= $suffix;
+ }
+ }
+ }
+ }
+
+ wfProfileOut( __METHOD__ );
+ return $ret;
+ }