API bug 10046: incorrect action produces invalid response format

[lhc/web/wiklou.git] / includes / SpecialWantedpages.php

diff --git a/includes/SpecialWantedpages.php b/includes/SpecialWantedpages.php
index b3f5f9a..8b70020 100644 (file)
--- a/includes/SpecialWantedpages.php
+++ b/includes/SpecialWantedpages.php
@@ -1,44 +1,131 @@
 <?php
+/**
+ *
+ * @addtogroup SpecialPage
+ */
 
-require_once ( "QueryPage.php" ) ;
-
+/**
+ * implements Special:Wantedpages
+ * @addtogroup SpecialPage
+ */
 class WantedPagesPage extends QueryPage {
+       var $nlinks;
+
+       function WantedPagesPage( $inc = false, $nlinks = true ) {
+               $this->setListoutput( $inc );
+               $this->nlinks = $nlinks;
+       }
 
        function getName() {
-               return "Wantedpages";
+               return 'Wantedpages';
        }
 
        function isExpensive() {
-               return 1;
+               return true;
        }
+       function isSyndicated() { return false; }
+
+       function getSQL() {
+               global $wgWantedPagesThreshold;
+               $count = $wgWantedPagesThreshold - 1;
+               $dbr = wfGetDB( DB_SLAVE );
+               $pagelinks = $dbr->tableName( 'pagelinks' );
+               $page      = $dbr->tableName( 'page' );
+               return
+                       "SELECT 'Wantedpages' AS type,
+                               pl_namespace AS namespace,
+                               pl_title AS title,
+                               COUNT(*) AS value
+                        FROM $pagelinks
+                        LEFT JOIN $page AS pg1
+                        ON pl_namespace = pg1.page_namespace AND pl_title = pg1.page_title
+                        LEFT JOIN $page AS pg2
+                        ON pl_from = pg2.page_id
+                        WHERE pg1.page_namespace IS NULL
+                        AND pl_namespace NOT IN ( 2, 3 )
+                        AND pg2.page_namespace != 8
+                        GROUP BY 1,2,3
+                        HAVING COUNT(*) > $count";
+       }
+
+       /**
+        * Cache page existence for performance
+        */
+       function preprocessResults( &$db, &$res ) {
+               $batch = new LinkBatch;
+               while ( $row = $db->fetchObject( $res ) )
+                       $batch->addObj( Title::makeTitleSafe( $row->namespace, $row->title ) );
+               $batch->execute();
 
-       function getSQL( $offset, $limit ) {
-               return "SELECT bl_to, COUNT( DISTINCT bl_from ) as nlinks " .
-                 "FROM brokenlinks GROUP BY bl_to HAVING nlinks > 1 " .
-                 "ORDER BY nlinks DESC LIMIT {$offset}, {$limit}";
+               // Back to start for display
+               if ( $db->numRows( $res ) > 0 )
+                       // If there are no rows we get an error seeking.
+                       $db->dataSeek( $res, 0 );
        }
 
+
        function formatResult( $skin, $result ) {
                global $wgLang;
 
-               $nt = Title::newFromDBkey( $result->bl_to );
-
-               $plink = $skin->makeBrokenLink( $nt->getPrefixedText(), "" );
-               $nl = wfMsg( "nlinks", $result->nlinks );
-               $nlink = $skin->makeKnownLink( $wgLang->specialPage( "Whatlinkshere" ), $nl,
-                 "target=" . $nt->getPrefixedURL() );
+               $title = Title::makeTitleSafe( $result->namespace, $result->title );
 
-               return "{$plink} ({$nlink})";
+               if( $this->isCached() ) {
+                       # Check existence; which is stored in the link cache
+                       if( !$title->exists() ) {
+                               # Make a redlink
+                               $pageLink = $skin->makeBrokenLinkObj( $title );
+                       } else {
+                               # Make a a struck-out normal link
+                               $pageLink = "<s>" . $skin->makeLinkObj( $title ) . "</s>";
+                       }               
+               } else {
+                       # Not cached? Don't bother checking existence; it can't
+                       $pageLink = $skin->makeBrokenLinkObj( $title );
+               }
+               
+               # Make a link to "what links here" if it's required
+               $wlhLink = $this->nlinks
+                                       ? $this->makeWlhLink( $title, $skin,
+                                                       wfMsgExt( 'nlinks', array( 'parsemag', 'escape'),
+                                                               $wgLang->formatNum( $result->value ) ) )
+                                       : null;
+                                       
+               return wfSpecialList($pageLink, $wlhLink);
+       }
+       
+       /**
+        * Make a "what links here" link for a specified title
+        * @param $title Title to make the link for
+        * @param $skin Skin to use
+        * @param $text Link text
+        * @return string
+        */
+       function makeWlhLink( &$title, &$skin, $text ) {
+               $wlhTitle = SpecialPage::getTitleFor( 'Whatlinkshere' );
+               return $skin->makeKnownLinkObj( $wlhTitle, $text, 'target=' . $title->getPrefixedUrl() );
        }
+       
 }
 
-function wfSpecialWantedpages()
-{
-       list( $limit, $offset ) = wfCheckLimits();
+/**
+ * constructor
+ */
+function wfSpecialWantedpages( $par = null, $specialPage ) {
+       $inc = $specialPage->including();
+
+       if ( $inc ) {
+               @list( $limit, $nlinks ) = explode( '/', $par, 2 );
+               $limit = (int)$limit;
+               $nlinks = $nlinks === 'nlinks';
+               $offset = 0;
+       } else {
+               list( $limit, $offset ) = wfCheckLimits();
+               $nlinks = true;
+       }
 
-       $wpp = new WantedPagesPage();
+       $wpp = new WantedPagesPage( $inc, $nlinks );
 
-       $wpp->doQuery( $offset, $limit );
+       $wpp->doQuery( $offset, $limit, !$inc );
 }
 
 ?>