284 lines
8.8 KiB
PHP
284 lines
8.8 KiB
PHP
<?php
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# Copyright (C) 2003 Brion Vibber <brion@pobox.com>
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# http://www.mediawiki.org/
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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# http://www.gnu.org/copyleft/gpl.html
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/**
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*
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* @addtogroup SpecialPage
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*/
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function wfExportGetPagesFromCategory( $title ) {
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global $wgContLang;
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$name = $title->getDBkey();
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$dbr = wfGetDB( DB_SLAVE );
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list( $page, $categorylinks ) = $dbr->tableNamesN( 'page', 'categorylinks' );
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$sql = "SELECT page_namespace, page_title FROM $page " .
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"JOIN $categorylinks ON cl_from = page_id " .
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"WHERE cl_to = " . $dbr->addQuotes( $name );
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$pages = array();
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$res = $dbr->query( $sql, 'wfExportGetPagesFromCategory' );
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while ( $row = $dbr->fetchObject( $res ) ) {
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$n = $row->page_title;
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if ($row->page_namespace) {
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$ns = $wgContLang->getNsText( $row->page_namespace );
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$n = $ns . ':' . $n;
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}
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$pages[] = $n;
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}
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$dbr->freeResult($res);
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return $pages;
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}
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/**
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* Expand a list of pages to include templates used in those pages.
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* @param $inputPages array, list of titles to look up
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* @param $pageSet array, associative array indexed by titles for output
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* @return array associative array index by titles
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*/
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function wfExportGetTemplates( $inputPages, $pageSet ) {
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return wfExportGetLinks( $inputPages, $pageSet,
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'templatelinks',
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array( 'tl_namespace AS namespace', 'tl_title AS title' ),
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array( 'page_id=tl_from' ) );
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}
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/**
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* Expand a list of pages to include images used in those pages.
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* @param $inputPages array, list of titles to look up
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* @param $pageSet array, associative array indexed by titles for output
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* @return array associative array index by titles
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*/
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function wfExportGetImages( $inputPages, $pageSet ) {
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return wfExportGetLinks( $inputPages, $pageSet,
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'imagelinks',
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array( NS_IMAGE . ' AS namespace', 'il_to AS title' ),
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array( 'page_id=il_from' ) );
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}
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/**
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* Expand a list of pages to include items used in those pages.
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* @private
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*/
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function wfExportGetLinks( $inputPages, $pageSet, $table, $fields, $join ) {
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$dbr = wfGetDB( DB_SLAVE );
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foreach( $inputPages as $page ) {
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$title = Title::newFromText( $page );
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if( $title ) {
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$pageSet[$title->getPrefixedText()] = true;
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/// @fixme May or may not be more efficient to batch these
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/// by namespace when given multiple input pages.
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$result = $dbr->select(
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array( 'page', $table ),
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$fields,
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array_merge( $join,
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array(
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'page_namespace' => $title->getNamespace(),
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'page_title' => $title->getDbKey() ) ),
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__METHOD__ );
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foreach( $result as $row ) {
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$template = Title::makeTitle( $row->namespace, $row->title );
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$pageSet[$template->getPrefixedText()] = true;
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}
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}
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}
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return $pageSet;
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}
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/**
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* Callback function to remove empty strings from the pages array.
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*/
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function wfFilterPage( $page ) {
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return $page !== '' && $page !== null;
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}
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/**
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*
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*/
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function wfSpecialExport( $page = '' ) {
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global $wgOut, $wgRequest, $wgSitename, $wgExportAllowListContributors;
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global $wgExportAllowHistory, $wgExportMaxHistory;
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$curonly = true;
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$doexport = false;
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if ( $wgRequest->getCheck( 'addcat' ) ) {
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$page = $wgRequest->getText( 'pages' );
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$catname = $wgRequest->getText( 'catname' );
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if ( $catname !== '' && $catname !== NULL && $catname !== false ) {
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$t = Title::makeTitleSafe( NS_CATEGORY, $catname );
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if ( $t ) {
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/**
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* @fixme This can lead to hitting memory limit for very large
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* categories. Ideally we would do the lookup synchronously
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* during the export in a single query.
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*/
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$catpages = wfExportGetPagesFromCategory( $t );
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if ( $catpages ) $page .= "\n" . implode( "\n", $catpages );
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}
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}
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}
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else if( $wgRequest->wasPosted() && $page == '' ) {
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$page = $wgRequest->getText( 'pages' );
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$curonly = $wgRequest->getCheck( 'curonly' );
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$rawOffset = $wgRequest->getVal( 'offset' );
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if( $rawOffset ) {
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$offset = wfTimestamp( TS_MW, $rawOffset );
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} else {
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$offset = null;
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}
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$limit = $wgRequest->getInt( 'limit' );
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$dir = $wgRequest->getVal( 'dir' );
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$history = array(
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'dir' => 'asc',
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'offset' => false,
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'limit' => $wgExportMaxHistory,
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);
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$historyCheck = $wgRequest->getCheck( 'history' );
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if ( $curonly ) {
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$history = WikiExporter::CURRENT;
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} elseif ( !$historyCheck ) {
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if ( $limit > 0 && $limit < $wgExportMaxHistory ) {
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$history['limit'] = $limit;
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}
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if ( !is_null( $offset ) ) {
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$history['offset'] = $offset;
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}
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if ( strtolower( $dir ) == 'desc' ) {
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$history['dir'] = 'desc';
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}
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}
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if( $page != '' ) $doexport = true;
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} else {
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// Default to current-only for GET requests
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$page = $wgRequest->getText( 'pages', $page );
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$historyCheck = $wgRequest->getCheck( 'history' );
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if( $historyCheck ) {
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$history = WikiExporter::FULL;
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} else {
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$history = WikiExporter::CURRENT;
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}
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if( $page != '' ) $doexport = true;
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}
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if( !$wgExportAllowHistory ) {
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// Override
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$history = WikiExporter::CURRENT;
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}
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$list_authors = $wgRequest->getCheck( 'listauthors' );
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if ( !$curonly || !$wgExportAllowListContributors ) $list_authors = false ;
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if ( $doexport ) {
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$wgOut->disable();
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// Cancel output buffering and gzipping if set
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// This should provide safer streaming for pages with history
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wfResetOutputBuffers();
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header( "Content-type: application/xml; charset=utf-8" );
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if( $wgRequest->getCheck( 'wpDownload' ) ) {
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// Provide a sane filename suggestion
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$filename = urlencode( $wgSitename . '-' . wfTimestampNow() . '.xml' );
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$wgRequest->response()->header( "Content-disposition: attachment;filename={$filename}" );
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}
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/* Split up the input and look up linked pages */
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$inputPages = array_filter( explode( "\n", $page ), 'wfFilterPage' );
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$pageSet = array_flip( $inputPages );
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if( $wgRequest->getCheck( 'templates' ) ) {
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$pageSet = wfExportGetTemplates( $inputPages, $pageSet );
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}
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/*
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// Enable this when we can do something useful exporting/importing image information. :)
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if( $wgRequest->getCheck( 'images' ) ) {
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$pageSet = wfExportGetImages( $inputPages, $pageSet );
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}
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*/
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$pages = array_keys( $pageSet );
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/* Ok, let's get to it... */
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$db = wfGetDB( DB_SLAVE );
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$exporter = new WikiExporter( $db, $history );
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$exporter->list_authors = $list_authors ;
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$exporter->openStream();
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foreach( $pages as $page ) {
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/*
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if( $wgExportMaxHistory && !$curonly ) {
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$title = Title::newFromText( $page );
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if( $title ) {
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$count = Revision::countByTitle( $db, $title );
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if( $count > $wgExportMaxHistory ) {
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wfDebug( __FUNCTION__ .
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": Skipped $page, $count revisions too big\n" );
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continue;
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}
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}
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}*/
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#Bug 8824: Only export pages the user can read
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$title = Title::newFromText( $page );
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if( is_null( $title ) ) continue; #TODO: perhaps output an <error> tag or something.
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if( !$title->userCanRead() ) continue; #TODO: perhaps output an <error> tag or something.
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$exporter->pageByTitle( $title );
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}
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$exporter->closeStream();
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return;
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}
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$self = SpecialPage::getTitleFor( 'Export' );
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$wgOut->addHtml( wfMsgExt( 'exporttext', 'parse' ) );
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$form = Xml::openElement( 'form', array( 'method' => 'post',
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'action' => $self->getLocalUrl( 'action=submit' ) ) );
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$form .= Xml::inputLabel( wfMsg( 'export-addcattext' ) , 'catname', 'catname', 40 ) . ' ';
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$form .= Xml::submitButton( wfMsg( 'export-addcat' ), array( 'name' => 'addcat' ) ) . '<br />';
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$form .= Xml::openElement( 'textarea', array( 'name' => 'pages', 'cols' => 40, 'rows' => 10 ) );
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$form .= htmlspecialchars( $page );
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$form .= Xml::closeElement( 'textarea' );
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$form .= '<br />';
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if( $wgExportAllowHistory ) {
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$form .= Xml::checkLabel( wfMsg( 'exportcuronly' ), 'curonly', 'curonly', true ) . '<br />';
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} else {
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$wgOut->addHtml( wfMsgExt( 'exportnohistory', 'parse' ) );
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}
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$form .= Xml::checkLabel( wfMsg( 'export-templates' ), 'templates', 'wpExportTemplates', false ) . '<br />';
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// Enable this when we can do something useful exporting/importing image information. :)
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//$form .= Xml::checkLabel( wfMsg( 'export-images' ), 'images', 'wpExportImages', false ) . '<br />';
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$form .= Xml::checkLabel( wfMsg( 'export-download' ), 'wpDownload', 'wpDownload', true ) . '<br />';
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$form .= Xml::submitButton( wfMsg( 'export-submit' ) );
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$form .= Xml::closeElement( 'form' );
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$wgOut->addHtml( $form );
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}
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