Refactored parser output handling slightly, and added a hook function, to allow exten...
[lhc/web/wiklou.git] / includes / SpecialExport.php
index 9f23fbb..a402b65 100644 (file)
-<?
+<?php
+# Copyright (C) 2003 Brion Vibber <brion@pobox.com>
+# http://www.mediawiki.org/
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# http://www.gnu.org/copyleft/gpl.html
+/**
+ *
+ * @package MediaWiki
+ * @subpackage SpecialPage
+ */
 
-function wfSpecialExport( $page = "" ) {
-       global $wgOut, $wgLang;
-       
-       if( $_REQUEST['action'] == 'submit') {
-               $page = $_REQUEST['pages'];
-               $curonly = isset($_REQUEST['curonly']) ? true : false;
+/** */
+require_once( 'Export.php' );
+
+/**
+ *
+ */
+function wfSpecialExport( $page = '' ) {
+       global $wgOut, $wgRequest, $wgExportAllowListContributors;
+       global $wgExportAllowHistory, $wgExportMaxHistory;
+       $maxLimit = 200;
+
+       $curonly = true;
+       $fullHistory = array(
+               'dir' => 'asc',
+               'offset' => false,
+               'limit' => $maxLimit,
+       );
+       if( $wgRequest->wasPosted() ) {
+               $page = $wgRequest->getText( 'pages' );
+               $curonly = $wgRequest->getCheck( 'curonly' );
+               $rawOffset = $wgRequest->getVal( 'offset' );
+               if( $rawOffset ) {
+                       $offset = wfTimestamp( TS_MW, $rawOffset );
+               } else {
+                       $offset = null;
+               }
+               $limit = $wgRequest->getInt( 'limit' );
+               $dir = $wgRequest->getVal( 'dir' );
+               $history = array(
+                       'dir' => 'asc',
+                       'offset' => false,
+                       'limit' => $maxLimit,
+               );
+               $historyCheck = $wgRequest->getCheck( 'history' );
+               if ( $curonly ) {
+                       $history = MW_EXPORT_CURRENT;
+               } elseif ( !$historyCheck ) {
+                       if ( $limit > 0 && $limit < $maxLimit ) {
+                               $history['limit'] = $limit;
+                       }
+                       if ( !is_null( $offset ) ) {
+                               $history['offset'] = $offset;
+                       }
+                       if ( strtolower( $dir ) == 'desc' ) {
+                               $history['dir'] = 'desc';
+                       }
+               }
        } else {
-               $curonly = true;
+               // Default to current-only for GET requests
+               $page = $wgRequest->getText( 'pages', $page );
+               $historyCheck = $wgRequest->getCheck( 'history' );
+               if( $historyCheck ) {
+                       $history = MW_EXPORT_FULL;
+               } else {
+                       $history = MW_EXPORT_CURRENT;
+               }
        }
-       
-       if( $page != "" ) {
-               header( "Content-type: application/xml; charset=utf-8" );
-               $pages = explode( "\n", $page );
-               $xml = pages2xml( $pages, $curonly );
-               echo $xml;
-               exit();
+       if( !$wgExportAllowHistory ) {
+               // Override
+               $history = MW_EXPORT_CURRENT;
        }
        
-       $wgOut->addWikiText( wfMsg( "exporttext" ) );
-       $action = wfLocalUrlE( $wgLang->SpecialPage( "Export" ) );
-       $wgOut->addHTML( "
-<form method='post' action=\"$action\">
-<input type='hidden' name='action' value='submit' />
-<textarea name='pages' cols='40' rows='10'></textarea><br />
-<label><input type='checkbox' name='curonly' value='true' checked />
-" . wfMsg( "exportcuronly" ) . "</label><br />
-<input type='submit' />
-</form>
-" );
-}
+       $list_authors = $wgRequest->getCheck( 'listauthors' );
+       if ( !$curonly || !$wgExportAllowListContributors ) $list_authors = false ;
 
-function pages2xml( $pages, $curonly = false ) {
-       global $wgLanguageCode, $wgInputEncoding, $wgLang;
-       $xml = "<mediawiki version=\"0.1\" xml:ns=\"$wgLanguageCode\">\n";
-       foreach( $pages as $page ) {
-               $xml .= page2xml( $page, $curonly );
-       }
-       $xml .= "</mediawiki>\n";
-       if($wgInputEncoding != "utf-8")
-               $xml = $wgLang->iconv( $wgInputEncoding, "utf-8", $xml );
-       return $xml;
-}
-
-function page2xml( $page, $curonly, $full = false ) {
-       global $wgInputCharset, $wgLang;
-       $title = Title::NewFromText( $page );
-       $t = wfStrencode( $title->getDBKey() );
-       $ns = $title->getNamespace();
-       $sql = "SELECT cur_id as id,cur_timestamp as timestamp,cur_user as user,cur_user_text as user_text," .
-               "cur_restrictions as restrictions,cur_comment as comment,cur_text as text FROM cur " .
-               "WHERE cur_namespace=$ns AND cur_title='$t'";
-       $res = wfQuery( $sql, DB_READ );
-       if( $s = wfFetchObject( $res ) ) {
-               $tl = htmlspecialchars( $title->getPrefixedText() );
-               $xml = "  <page>\n";
-               $xml .= "    <title>$tl</title>\n";
-               if( $full ) {
-                       $xml .= "    <id>$s->id</id>\n";
-               }
-               if( $s->restrictions ) {
-                       $xml .= "    <restrictions>$s->restrictions</restrictions>\n";
+       if( $page != '' ) {
+               $wgOut->disable();
+               
+               // Cancel output buffering and gzipping if set
+               // This should provide safer streaming for pages with history
+               while( $status = ob_get_status() ) {
+                       ob_end_clean();
+                       if( $status['name'] == 'ob_gzhandler' ) {
+                               header( 'Content-Encoding:' );
+                       }
                }
-               if( !$curonly ) {
-                       $sql = "SELECT old_id as id,old_timestamp as timestamp, old_user as user, old_user_text as user_text," .
-                               "old_comment as comment, old_text as text FROM old " .
-                               "WHERE old_namespace=$ns AND old_title='$t' ORDER BY old_timestamp";
-                       $res = wfQuery( $sql, DB_READ );
+               header( "Content-type: application/xml; charset=utf-8" );
+               $pages = explode( "\n", $page );
 
-                       while( $s = wfFetchObject( $res ) ) {
-                               $xml .= revision2xml( $s, $full, false );
+               $db =& wfGetDB( DB_SLAVE );
+               $exporter = new WikiExporter( $db, $history );
+               $exporter->list_authors = $list_authors ;
+               $exporter->openStream();
+               
+               foreach( $pages as $page ) {
+                       if( $wgExportMaxHistory && !$curonly ) {
+                               $title = Title::newFromText( $page );
+                               if( $title ) {
+                                       $count = Revision::countByTitle( $db, $title );
+                                       if( $count > $wgExportMaxHistory ) {
+                                               wfDebug( __FUNCTION__ .
+                                                       ": Skipped $page, $count revisions too big\n" );
+                                               continue;
+                                       }
+                               }
                        }
+                       $exporter->pageByName( $page );
                }
-               $xml .= revision2xml( $s, $full, true );
-               $xml .= "  </page>\n";
-               return $xml;
-       } else {
-               return "";
+               
+               $exporter->closeStream();
+               return;
        }
-}
 
-function revision2xml( $s, $full, $cur ) {
-       $ts = wfTimestamp2ISO8601( $s->timestamp );
-       $xml = "    <revision>\n";
-       if($full && !$cur)
-               $xml .= "    <id>$s->id</id>\n";
-       $xml .= "      <timestamp>$ts</timestamp>\n";
-       if($s->user) {
-               $u = "<username>" . htmlspecialchars( $s->user_text ) . "</username>";
-               if($full)
-                       $u .= "<id>$s->user</id>";
+       $wgOut->addWikiText( wfMsg( "exporttext" ) );
+       $titleObj = Title::makeTitle( NS_SPECIAL, "Export" );
+       
+       $form = wfOpenElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalUrl() ) );
+       $form .= wfOpenElement( 'textarea', array( 'name' => 'pages', 'cols' => 40, 'rows' => 10 ) ) . '</textarea><br />';
+       if( $wgExportAllowHistory ) {
+               $form .= wfCheck( 'curonly', true, array( 'value' => 'true', 'id' => 'curonly' ) );
+               $form .= wfLabel( wfMsg( 'exportcuronly' ), 'curonly' ) . '<br />';
        } else {
-               $u = "<ip>" . htmlspecialchars( $s->user_text ) . "</ip>";
-       }
-       $xml .= "      <contributor>$u</contributor>\n";
-       if($s->minor) {
-               $xml .= "      <minor/>\n";
+               $wgOut->addWikiText( wfMsg( 'exportnohistory' ) );
        }
-       if($s->comment != "") {
-               $c = htmlspecialchars( $s->comment );
-               $xml .= "      <comment>$c</comment>\n";
-       }
-       $t = htmlspecialchars( $s->text );
-       $xml .= "      <text>$t</text>\n";
-       $xml .= "    </revision>\n";
-       return $xml;
-}
-
-function wfTimestamp2ISO8601( $ts ) {
-       #2003-08-05T18:30:02Z
-       return preg_replace( '/^(....)(..)(..)(..)(..)(..)$/', '$1-$2-$3T$4:$5:$6Z', $ts );
+       $form .= wfHidden( 'action', 'submit' );
+       $form .= wfSubmitButton( wfMsg( 'export-submit' ) ) . '</form>';
+       $wgOut->addHtml( $form );
 }
 
 ?>