includes/SpecialExport.php

   1 <?php
   2 # Copyright (C) 2003 Brion Vibber <brion@pobox.com>
   3 # http://www.mediawiki.org/
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19 /**
  20  *
  21  * @package MediaWiki
  22  * @subpackage SpecialPage
  23  */
  24
  25 /** */
  26 require_once( 'Export.php' );
  27
  28 /**
  29  *
  30  */
  31 function wfSpecialExport( $page = '' ) {
  32         global $wgOut, $wgRequest, $wgExportAllowListContributors;
  33         global $wgExportAllowHistory, $wgExportMaxHistory;
  34         $maxLimit = 200;
  35
  36         $curonly = true;
  37         $fullHistory = array(
  38                 'dir' => 'asc',
  39                 'offset' => false,
  40                 'limit' => $maxLimit,
  41         );
  42         if( $wgRequest->wasPosted() ) {
  43                 $page = $wgRequest->getText( 'pages' );
  44                 $curonly = $wgRequest->getCheck( 'curonly' );
  45                 $rawOffset = $wgRequest->getVal( 'offset' );
  46                 if( $rawOffset ) {
  47                         $offset = wfTimestamp( TS_MW, $rawOffset );
  48                 } else {
  49                         $offset = null;
  50                 }
  51                 $limit = $wgRequest->getInt( 'limit' );
  52                 $dir = $wgRequest->getVal( 'dir' );
  53                 $history = array(
  54                         'dir' => 'asc',
  55                         'offset' => false,
  56                         'limit' => $maxLimit,
  57                 );
  58                 $historyCheck = $wgRequest->getCheck( 'history' );
  59                 if ( $curonly ) {
  60                         $history = MW_EXPORT_CURRENT;
  61                 } elseif ( !$historyCheck ) {
  62                         if ( $limit > 0 && $limit < $maxLimit ) {
  63                                 $history['limit'] = $limit;
  64                         }
  65                         if ( !is_null( $offset ) ) {
  66                                 $history['offset'] = $offset;
  67                         }
  68                         if ( strtolower( $dir ) == 'desc' ) {
  69                                 $history['dir'] = 'desc';
  70                         }
  71                 }
  72         } else {
  73                 // Default to current-only for GET requests
  74                 $page = $wgRequest->getText( 'pages', $page );
  75                 $historyCheck = $wgRequest->getCheck( 'history' );
  76                 if( $historyCheck ) {
  77                         $history = MW_EXPORT_FULL;
  78                 } else {
  79                         $history = MW_EXPORT_CURRENT;
  80                 }
  81         }
  82         if( !$wgExportAllowHistory ) {
  83                 // Override
  84                 $history = MW_EXPORT_CURRENT;
  85         }
  86
  87         $list_authors = $wgRequest->getCheck( 'listauthors' );
  88         if ( !$curonly || !$wgExportAllowListContributors ) $list_authors = false ;
  89
  90         if( $page != '' ) {
  91                 $wgOut->disable();
  92
  93                 // Cancel output buffering and gzipping if set
  94                 // This should provide safer streaming for pages with history
  95                 while( $status = ob_get_status() ) {
  96                         ob_end_clean();
  97                         if( $status['name'] == 'ob_gzhandler' ) {
  98                                 header( 'Content-Encoding:' );
  99                         }
 100                 }
 101                 header( "Content-type: application/xml; charset=utf-8" );
 102                 $pages = explode( "\n", $page );
 103
 104                 $db =& wfGetDB( DB_SLAVE );
 105                 $exporter = new WikiExporter( $db, $history );
 106                 $exporter->list_authors = $list_authors ;
 107                 $exporter->openStream();
 108
 109                 foreach( $pages as $page ) {
 110                         if( $wgExportMaxHistory && !$curonly ) {
 111                                 $title = Title::newFromText( $page );
 112                                 if( $title ) {
 113                                         $count = Revision::countByTitle( $db, $title );
 114                                         if( $count > $wgExportMaxHistory ) {
 115                                                 wfDebug( __FUNCTION__ .
 116                                                         ": Skipped $page, $count revisions too big\n" );
 117                                                 continue;
 118                                         }
 119                                 }
 120                         }
 121                         $exporter->pageByName( $page );
 122                 }
 123
 124                 $exporter->closeStream();
 125                 return;
 126         }
 127
 128         $wgOut->addWikiText( wfMsg( "exporttext" ) );
 129         $titleObj = Title::makeTitle( NS_SPECIAL, "Export" );
 130
 131         $form = wfOpenElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalUrl() ) );
 132         $form .= wfOpenElement( 'textarea', array( 'name' => 'pages', 'cols' => 40, 'rows' => 10 ) ) . '</textarea><br />';
 133         if( $wgExportAllowHistory ) {
 134                 $form .= wfCheck( 'curonly', true, array( 'value' => 'true', 'id' => 'curonly' ) );
 135                 $form .= wfLabel( wfMsg( 'exportcuronly' ), 'curonly' ) . '<br />';
 136         } else {
 137                 $wgOut->addWikiText( wfMsg( 'exportnohistory' ) );
 138         }
 139         $form .= wfHidden( 'action', 'submit' );
 140         $form .= wfSubmitButton( wfMsg( 'export-submit' ) ) . '</form>';
 141         $wgOut->addHtml( $form );
 142 }
 143
 144 ?>