(bug 13718) Return the proper continue parameter for cmsort=timestamp

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

diff --git a/includes/SpecialExport.php b/includes/SpecialExport.php
index 71eb122..1fe2e44 100644 (file)
--- a/includes/SpecialExport.php
+++ b/includes/SpecialExport.php
@@ -49,6 +49,68 @@ function wfExportGetPagesFromCategory( $title ) {
        return $pages;
 }
 
+/**
+ * Expand a list of pages to include templates used in those pages.
+ * @param $inputPages array, list of titles to look up
+ * @param $pageSet array, associative array indexed by titles for output
+ * @return array associative array index by titles
+ */
+function wfExportGetTemplates( $inputPages, $pageSet ) {
+       return wfExportGetLinks( $inputPages, $pageSet,
+               'templatelinks', 
+               array( 'tl_namespace AS namespace', 'tl_title AS title' ),
+               array( 'page_id=tl_from' ) );
+}
+
+/**
+ * Expand a list of pages to include images used in those pages.
+ * @param $inputPages array, list of titles to look up
+ * @param $pageSet array, associative array indexed by titles for output
+ * @return array associative array index by titles
+ */
+function wfExportGetImages( $inputPages, $pageSet ) {
+       return wfExportGetLinks( $inputPages, $pageSet,
+               'imagelinks',
+               array( NS_IMAGE . ' AS namespace', 'il_to AS title' ),
+               array( 'page_id=il_from' ) );
+}
+
+/**
+ * Expand a list of pages to include items used in those pages.
+ * @private
+ */
+function wfExportGetLinks( $inputPages, $pageSet, $table, $fields, $join ) {
+       $dbr = wfGetDB( DB_SLAVE );
+       foreach( $inputPages as $page ) {
+               $title = Title::newFromText( $page );
+               if( $title ) {
+                       $pageSet[$title->getPrefixedText()] = true;
+                       /// @fixme May or may not be more efficient to batch these
+                       ///        by namespace when given multiple input pages.
+                       $result = $dbr->select(
+                               array( 'page', $table ),
+                               $fields,
+                               array_merge( $join,
+                                       array(
+                                               'page_namespace' => $title->getNamespace(),
+                                               'page_title' => $title->getDbKey() ) ),
+                               __METHOD__ );
+                       foreach( $result as $row ) {
+                               $template = Title::makeTitle( $row->namespace, $row->title );
+                               $pageSet[$template->getPrefixedText()] = true;
+                       }
+               }
+       }
+       return $pageSet;
+}
+
+/**
+ * Callback function to remove empty strings from the pages array.
+ */
+function wfFilterPage( $page ) {
+       return $page !== '' && $page !== null;
+}
+
 /**
  *
  */
@@ -66,6 +128,11 @@ function wfSpecialExport( $page = '' ) {
                if ( $catname !== '' && $catname !== NULL && $catname !== false ) {
                        $t = Title::makeTitleSafe( NS_CATEGORY, $catname );
                        if ( $t ) {
+                               /**
+                                * @fixme This can lead to hitting memory limit for very large
+                                * categories. Ideally we would do the lookup synchronously
+                                * during the export in a single query.
+                                */
                                $catpages = wfExportGetPagesFromCategory( $t );
                                if ( $catpages ) $page .= "\n" . implode( "\n", $catpages );
                        }
@@ -123,7 +190,7 @@ function wfSpecialExport( $page = '' ) {
        
        $list_authors = $wgRequest->getCheck( 'listauthors' );
        if ( !$curonly || !$wgExportAllowListContributors ) $list_authors = false ;
-
+       
        if ( $doexport ) {
                $wgOut->disable();
                
@@ -136,7 +203,25 @@ function wfSpecialExport( $page = '' ) {
                        $filename = urlencode( $wgSitename . '-' . wfTimestampNow() . '.xml' );
                        $wgRequest->response()->header( "Content-disposition: attachment;filename={$filename}" );
                }
-               $pages = explode( "\n", $page );
+               
+               /* Split up the input and look up linked pages */
+               $inputPages = array_filter( explode( "\n", $page ), 'wfFilterPage' );
+               $pageSet = array_flip( $inputPages );
+
+               if( $wgRequest->getCheck( 'templates' ) ) {
+                       $pageSet = wfExportGetTemplates( $inputPages, $pageSet );
+               }
+
+               /*
+               // Enable this when we can do something useful exporting/importing image information. :)
+               if( $wgRequest->getCheck( 'images' ) ) {
+                       $pageSet = wfExportGetImages( $inputPages, $pageSet );
+               }
+               */
+               
+               $pages = array_keys( $pageSet );
+               
+               /* Ok, let's get to it... */
 
                $db = wfGetDB( DB_SLAVE );
                $exporter = new WikiExporter( $db, $history );
@@ -160,7 +245,7 @@ function wfSpecialExport( $page = '' ) {
                        #Bug 8824: Only export pages the user can read
                        $title = Title::newFromText( $page );
                        if( is_null( $title ) ) continue; #TODO: perhaps output an <error> tag or something.
-                       if( !$title->userCan( 'read' ) ) continue; #TODO: perhaps output an <error> tag or something.
+                       if( !$title->userCanRead() ) continue; #TODO: perhaps output an <error> tag or something.
 
                        $exporter->pageByTitle( $title );
                }
@@ -188,6 +273,9 @@ function wfSpecialExport( $page = '' ) {
        } else {
                $wgOut->addHtml( wfMsgExt( 'exportnohistory', 'parse' ) );
        }
+       $form .= Xml::checkLabel( wfMsg( 'export-templates' ), 'templates', 'wpExportTemplates', false ) . '<br />';
+       // Enable this when we can do something useful exporting/importing image information. :)
+       //$form .= Xml::checkLabel( wfMsg( 'export-images' ), 'images', 'wpExportImages', false ) . '<br />';
        $form .= Xml::checkLabel( wfMsg( 'export-download' ), 'wpDownload', 'wpDownload', true ) . '<br />';
        
        $form .= Xml::submitButton( wfMsg( 'export-submit' ) );