includes/SpecialImport.php

   1 <?php
   2 /**
   3  * MediaWiki page data importer
   4  * Copyright (C) 2003,2005 Brion Vibber <brion@pobox.com>
   5  * http://www.mediawiki.org/
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @package MediaWiki
  23  * @subpackage SpecialPage
  24  */
  25
  26 /**
  27  * Constructor
  28  */
  29 function wfSpecialImport( $page = '' ) {
  30         global $wgUser, $wgOut, $wgRequest, $wgTitle, $wgImportSources;
  31         global $wgImportTargetNamespace;
  32
  33         $interwiki = false;
  34         $namespace = $wgImportTargetNamespace;
  35         $frompage = '';
  36         $history = true;
  37
  38         if( $wgRequest->wasPosted() && $wgRequest->getVal( 'action' ) == 'submit') {
  39                 $isUpload = false;
  40                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  41
  42                 switch( $wgRequest->getVal( "source" ) ) {
  43                 case "upload":
  44                         $isUpload = true;
  45                         if( $wgUser->isAllowed( 'importupload' ) ) {
  46                                 $source = ImportStreamSource::newFromUpload( "xmlimport" );
  47                         } else {
  48                                 return $wgOut->permissionRequired( 'importupload' );
  49                         }
  50                         break;
  51                 case "interwiki":
  52                         $interwiki = $wgRequest->getVal( 'interwiki' );
  53                         $history = $wgRequest->getCheck( 'interwikiHistory' );
  54                         $frompage = $wgRequest->getText( "frompage" );
  55                         $source = ImportStreamSource::newFromInterwiki(
  56                                 $interwiki,
  57                                 $frompage,
  58                                 $history );
  59                         break;
  60                 default:
  61                         $source = new WikiErrorMsg( "importunknownsource" );
  62                 }
  63
  64                 if( WikiError::isError( $source ) ) {
  65                         $wgOut->addWikiText( wfEscapeWikiText( $source->getMessage() ) );
  66                 } else {
  67                         $wgOut->addWikiText( wfMsg( "importstart" ) );
  68
  69                         $importer = new WikiImporter( $source );
  70                         if( !is_null( $namespace ) ) {
  71                                 $importer->setTargetNamespace( $namespace );
  72                         }
  73                         $reporter = new ImportReporter( $importer, $isUpload, $interwiki );
  74
  75                         $reporter->open();
  76                         $result = $importer->doImport();
  77                         $reporter->close();
  78
  79                         if( WikiError::isError( $result ) ) {
  80                                 $wgOut->addWikiText( wfMsg( "importfailed",
  81                                         wfEscapeWikiText( $result->getMessage() ) ) );
  82                         } else {
  83                                 # Success!
  84                                 $wgOut->addWikiText( wfMsg( "importsuccess" ) );
  85                         }
  86                 }
  87         }
  88
  89         $action = $wgTitle->escapeLocalUrl( 'action=submit' );
  90
  91         if( $wgUser->isAllowed( 'importupload' ) ) {
  92                 $wgOut->addWikiText( wfMsg( "importtext" ) );
  93                 $wgOut->addHTML( "
  94 <fieldset>
  95         <legend>" . wfMsgHtml('upload') . "</legend>
  96         <form enctype='multipart/form-data' method='post' action=\"$action\">
  97                 <input type='hidden' name='action' value='submit' />
  98                 <input type='hidden' name='source' value='upload' />
  99                 <input type='hidden' name='MAX_FILE_SIZE' value='2000000' />
 100                 <input type='file' name='xmlimport' value='' size='30' />
 101                 <input type='submit' value=\"" . wfMsgHtml( "uploadbtn" ) . "\" />
 102         </form>
 103 </fieldset>
 104 " );
 105         } else {
 106                 if( empty( $wgImportSources ) ) {
 107                         $wgOut->addWikiText( wfMsg( 'importnosources' ) );
 108                 }
 109         }
 110
 111         if( !empty( $wgImportSources ) ) {
 112                 $wgOut->addHTML( "
 113 <fieldset>
 114         <legend>" . wfMsgHtml('importinterwiki') . "</legend>
 115         <form method='post' action=\"$action\">" .
 116                 $wgOut->parse( wfMsg( 'import-interwiki-text' ) ) . "
 117                 <input type='hidden' name='action' value='submit' />
 118                 <input type='hidden' name='source' value='interwiki' />
 119                 <table>
 120                         <tr>
 121                                 <td>
 122                                         <select name='interwiki'>" );
 123                 foreach( $wgImportSources as $prefix ) {
 124                         $iw = htmlspecialchars( $prefix );
 125                         $selected = ($interwiki === $prefix) ? ' selected="selected"' : '';
 126                         $wgOut->addHTML( "<option value=\"$iw\"$selected>$iw</option>\n" );
 127                 }
 128                 $wgOut->addHTML( "
 129                                         </select>
 130                                 </td>
 131                                 <td>" .
 132                                         wfInput( 'frompage', 50, $frompage ) .
 133                                 "</td>
 134                         </tr>
 135                         <tr>
 136                                 <td></td>
 137                                 <td>" .
 138                                         wfCheckLabel( wfMsg( 'import-interwiki-history' ),
 139                                                 'interwikiHistory', 'interwikiHistory', $history ) .
 140                                 "</td>
 141                         </tr>
 142                         <tr>
 143                                 <td></td>
 144                                 <td>
 145                                         " . wfMsgHtml( 'import-interwiki-namespace' ) . " " .
 146                                                 HTMLnamespaceselector( $namespace, '' ) . "
 147                                 </td>
 148                         </tr>
 149                         <tr>
 150                                 <td></td>
 151                                 <td>" .
 152                                         wfSubmitButton( wfMsg( 'import-interwiki-submit' ) ) .
 153                                 "</td>
 154                         </tr>
 155                 </table>
 156         </form>
 157 </fieldset>
 158 " );
 159         }
 160 }
 161
 162 /**
 163  * Reporting callback
 164  */
 165 class ImportReporter {
 166         function __construct( $importer, $upload, $interwiki ) {
 167                 $importer->setPageOutCallback( array( $this, 'reportPage' ) );
 168                 $this->mPageCount = 0;
 169                 $this->mIsUpload = $upload;
 170                 $this->mInterwiki = $interwiki;
 171         }
 172
 173         function open() {
 174                 global $wgOut;
 175                 $wgOut->addHtml( "<ul>\n" );
 176         }
 177
 178         function reportPage( $title, $origTitle, $revisionCount, $successCount ) {
 179                 global $wgOut, $wgLang, $wgContLang;
 180
 181                 $this->mPageCount++;
 182
 183                 $localCount = $wgLang->formatNum( $successCount );
 184                 $contentCount = $wgContLang->formatNum( $successCount );
 185
 186                 $wgOut->addHtml( "<li>" . Linker::makeKnownLinkObj( $title ) .
 187                         " " .
 188                         wfMsgExt( 'import-revision-count', array( 'parsemag', 'escape' ), $localCount ) .
 189                         "</li>\n" );
 190
 191                 if( $successCount > 0 ) {
 192                         $log = new LogPage( 'import' );
 193                         if( $this->mIsUpload ) {
 194                                 $detail = wfMsgForContent( 'import-logentry-upload-detail',
 195                                         $contentCount );
 196                                 $log->addEntry( 'upload', $title, $detail );
 197                         } else {
 198                                 $interwiki = '[[:' . $this->mInterwiki . ':' .
 199                                         $origTitle->getPrefixedText() . ']]';
 200                                 $detail = wfMsgForContent( 'import-logentry-interwiki-detail',
 201                                         $contentCount, $interwiki );
 202                                 $log->addEntry( 'interwiki', $title, $detail );
 203                         }
 204
 205                         $comment = $detail; // quick
 206                         $dbw = wfGetDB( DB_MASTER );
 207                         $nullRevision = Revision::newNullRevision(
 208                                 $dbw, $title->getArticleId(), $comment, true );
 209                         $nullRevId = $nullRevision->insertOn( $dbw );
 210                 }
 211         }
 212
 213         function close() {
 214                 global $wgOut;
 215                 if( $this->mPageCount == 0 ) {
 216                         $wgOut->addHtml( "<li>" . wfMsgHtml( 'importnopages' ) . "</li>\n" );
 217                 }
 218                 $wgOut->addHtml( "</ul>\n" );
 219         }
 220 }
 221
 222 /**
 223  *
 224  * @package MediaWiki
 225  * @subpackage SpecialPage
 226  */
 227 class WikiRevision {
 228         var $title = null;
 229         var $id = 0;
 230         var $timestamp = "20010115000000";
 231         var $user = 0;
 232         var $user_text = "";
 233         var $text = "";
 234         var $comment = "";
 235         var $minor = false;
 236
 237         function setTitle( $title ) {
 238                 if( is_object( $title ) ) {
 239                         $this->title = $title;
 240                 } elseif( is_null( $title ) ) {
 241                         throw new MWException( "WikiRevision given a null title in import. You may need to adjust \$wgLegalTitleChars." );
 242                 } else {
 243                         throw new MWException( "WikiRevision given non-object title in import." );
 244                 }
 245         }
 246
 247         function setID( $id ) {
 248                 $this->id = $id;
 249         }
 250
 251         function setTimestamp( $ts ) {
 252                 # 2003-08-05T18:30:02Z
 253                 $this->timestamp = wfTimestamp( TS_MW, $ts );
 254         }
 255
 256         function setUsername( $user ) {
 257                 $this->user_text = $user;
 258         }
 259
 260         function setUserIP( $ip ) {
 261                 $this->user_text = $ip;
 262         }
 263
 264         function setText( $text ) {
 265                 $this->text = $text;
 266         }
 267
 268         function setComment( $text ) {
 269                 $this->comment = $text;
 270         }
 271
 272         function setMinor( $minor ) {
 273                 $this->minor = (bool)$minor;
 274         }
 275
 276         function getTitle() {
 277                 return $this->title;
 278         }
 279
 280         function getID() {
 281                 return $this->id;
 282         }
 283
 284         function getTimestamp() {
 285                 return $this->timestamp;
 286         }
 287
 288         function getUser() {
 289                 return $this->user_text;
 290         }
 291
 292         function getText() {
 293                 return $this->text;
 294         }
 295
 296         function getComment() {
 297                 return $this->comment;
 298         }
 299
 300         function getMinor() {
 301                 return $this->minor;
 302         }
 303
 304         function importOldRevision() {
 305                 $fname = "WikiImporter::importOldRevision";
 306                 $dbw =& wfGetDB( DB_MASTER );
 307
 308                 # Sneak a single revision into place
 309                 $user = User::newFromName( $this->getUser() );
 310                 if( $user ) {
 311                         $userId = intval( $user->getId() );
 312                         $userText = $user->getName();
 313                 } else {
 314                         $userId = 0;
 315                         $userText = $this->getUser();
 316                 }
 317
 318                 // avoid memory leak...?
 319                 $linkCache =& LinkCache::singleton();
 320                 $linkCache->clear();
 321
 322                 $article = new Article( $this->title );
 323                 $pageId = $article->getId();
 324                 if( $pageId == 0 ) {
 325                         # must create the page...
 326                         $pageId = $article->insertOn( $dbw );
 327                         $created = true;
 328                 } else {
 329                         $created = false;
 330
 331                         $prior = Revision::loadFromTimestamp( $dbw, $this->title, $this->timestamp );
 332                         if( !is_null( $prior ) ) {
 333                                 // FIXME: this could fail slightly for multiple matches :P
 334                                 wfDebug( __METHOD__ . ": skipping existing revision for [[" .
 335                                         $this->title->getPrefixedText() . "]], timestamp " .
 336                                         $this->timestamp . "\n" );
 337                                 return false;
 338                         }
 339                 }
 340
 341                 # FIXME: Use original rev_id optionally
 342                 # FIXME: blah blah blah
 343
 344                 #if( $numrows > 0 ) {
 345                 #       return wfMsg( "importhistoryconflict" );
 346                 #}
 347
 348                 # Insert the row
 349                 $revision = new Revision( array(
 350                         'page'       => $pageId,
 351                         'text'       => $this->getText(),
 352                         'comment'    => $this->getComment(),
 353                         'user'       => $userId,
 354                         'user_text'  => $userText,
 355                         'timestamp'  => $this->timestamp,
 356                         'minor_edit' => $this->minor,
 357                         ) );
 358                 $revId = $revision->insertOn( $dbw );
 359                 $changed = $article->updateIfNewerOn( $dbw, $revision );
 360
 361                 if( $created ) {
 362                         wfDebug( __METHOD__ . ": running onArticleCreate\n" );
 363                         Article::onArticleCreate( $this->title );
 364
 365                         wfDebug( __METHOD__ . ": running create updates\n" );
 366                         $article->createUpdates( $revision );
 367
 368                 } elseif( $changed ) {
 369                         wfDebug( __METHOD__ . ": running onArticleEdit\n" );
 370                         Article::onArticleEdit( $this->title );
 371
 372                         wfDebug( __METHOD__ . ": running edit updates\n" );
 373                         $article->editUpdates(
 374                                 $this->getText(),
 375                                 $this->getComment(),
 376                                 $this->minor,
 377                                 $this->timestamp,
 378                                 $revId );
 379                 }
 380
 381                 return true;
 382         }
 383
 384 }
 385
 386 /**
 387  *
 388  * @package MediaWiki
 389  * @subpackage SpecialPage
 390  */
 391 class WikiImporter {
 392         var $mSource = null;
 393         var $mPageCallback = null;
 394         var $mPageOutCallback = null;
 395         var $mRevisionCallback = null;
 396         var $mTargetNamespace = null;
 397         var $lastfield;
 398
 399         function WikiImporter( $source ) {
 400                 $this->setRevisionCallback( array( &$this, "importRevision" ) );
 401                 $this->mSource = $source;
 402         }
 403
 404         function throwXmlError( $err ) {
 405                 $this->debug( "FAILURE: $err" );
 406                 wfDebug( "WikiImporter XML error: $err\n" );
 407         }
 408
 409         # --------------
 410
 411         function doImport() {
 412                 if( empty( $this->mSource ) ) {
 413                         return new WikiErrorMsg( "importnotext" );
 414                 }
 415
 416                 $parser = xml_parser_create( "UTF-8" );
 417
 418                 # case folding violates XML standard, turn it off
 419                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 420
 421                 xml_set_object( $parser, $this );
 422                 xml_set_element_handler( $parser, "in_start", "" );
 423
 424                 $offset = 0; // for context extraction on error reporting
 425                 do {
 426                         $chunk = $this->mSource->readChunk();
 427                         if( !xml_parse( $parser, $chunk, $this->mSource->atEnd() ) ) {
 428                                 wfDebug( "WikiImporter::doImport encountered XML parsing error\n" );
 429                                 return new WikiXmlError( $parser, 'XML import parse failure', $chunk, $offset );
 430                         }
 431                         $offset += strlen( $chunk );
 432                 } while( $chunk !== false && !$this->mSource->atEnd() );
 433                 xml_parser_free( $parser );
 434
 435                 return true;
 436         }
 437
 438         function debug( $data ) {
 439                 #wfDebug( "IMPORT: $data\n" );
 440         }
 441
 442         function notice( $data ) {
 443                 global $wgCommandLineMode;
 444                 if( $wgCommandLineMode ) {
 445                         print "$data\n";
 446                 } else {
 447                         global $wgOut;
 448                         $wgOut->addHTML( "<li>$data</li>\n" );
 449                 }
 450         }
 451
 452         /**
 453          * Sets the action to perform as each new page in the stream is reached.
 454          * @param callable $callback
 455          * @return callable
 456          */
 457         function setPageCallback( $callback ) {
 458                 $previous = $this->mPageCallback;
 459                 $this->mPageCallback = $callback;
 460                 return $previous;
 461         }
 462
 463         /**
 464          * Sets the action to perform as each page in the stream is completed.
 465          * Callback accepts the page title (as a Title object), a second object
 466          * with the original title form (in case it's been overridden into a
 467          * local namespace), and a count of revisions.
 468          *
 469          * @param callable $callback
 470          * @return callable
 471          */
 472         function setPageOutCallback( $callback ) {
 473                 $previous = $this->mPageOutCallback;
 474                 $this->mPageOutCallback = $callback;
 475                 return $previous;
 476         }
 477
 478         /**
 479          * Sets the action to perform as each page revision is reached.
 480          * @param callable $callback
 481          * @return callable
 482          */
 483         function setRevisionCallback( $callback ) {
 484                 $previous = $this->mRevisionCallback;
 485                 $this->mRevisionCallback = $callback;
 486                 return $previous;
 487         }
 488
 489         /**
 490          * Set a target namespace to override the defaults
 491          */
 492         function setTargetNamespace( $namespace ) {
 493                 if( is_null( $namespace ) ) {
 494                         // Don't override namespaces
 495                         $this->mTargetNamespace = null;
 496                 } elseif( $namespace >= 0 ) {
 497                         // FIXME: Check for validity
 498                         $this->mTargetNamespace = intval( $namespace );
 499                 } else {
 500                         return false;
 501                 }
 502         }
 503
 504         /**
 505          * Default per-revision callback, performs the import.
 506          * @param WikiRevision $revision
 507          * @private
 508          */
 509         function importRevision( &$revision ) {
 510                 $dbw =& wfGetDB( DB_MASTER );
 511                 return $dbw->deadlockLoop( array( &$revision, 'importOldRevision' ) );
 512         }
 513
 514         /**
 515          * Alternate per-revision callback, for debugging.
 516          * @param WikiRevision $revision
 517          * @private
 518          */
 519         function debugRevisionHandler( &$revision ) {
 520                 $this->debug( "Got revision:" );
 521                 if( is_object( $revision->title ) ) {
 522                         $this->debug( "-- Title: " . $revision->title->getPrefixedText() );
 523                 } else {
 524                         $this->debug( "-- Title: <invalid>" );
 525                 }
 526                 $this->debug( "-- User: " . $revision->user_text );
 527                 $this->debug( "-- Timestamp: " . $revision->timestamp );
 528                 $this->debug( "-- Comment: " . $revision->comment );
 529                 $this->debug( "-- Text: " . $revision->text );
 530         }
 531
 532         /**
 533          * Notify the callback function when a new <page> is reached.
 534          * @param Title $title
 535          * @private
 536          */
 537         function pageCallback( $title ) {
 538                 if( is_callable( $this->mPageCallback ) ) {
 539                         call_user_func( $this->mPageCallback, $title );
 540                 }
 541         }
 542
 543         /**
 544          * Notify the callback function when a </page> is closed.
 545          * @param Title $title
 546          * @param Title $origTitle
 547          * @param int $revisionCount
 548          * @param int $successCount number of revisions for which callback returned true
 549          * @private
 550          */
 551         function pageOutCallback( $title, $origTitle, $revisionCount, $successCount ) {
 552                 if( is_callable( $this->mPageOutCallback ) ) {
 553                         call_user_func( $this->mPageOutCallback, $title, $origTitle,
 554                                 $revisionCount, $successCount );
 555                 }
 556         }
 557
 558
 559         # XML parser callbacks from here out -- beware!
 560         function donothing( $parser, $x, $y="" ) {
 561                 #$this->debug( "donothing" );
 562         }
 563
 564         function in_start( $parser, $name, $attribs ) {
 565                 $this->debug( "in_start $name" );
 566                 if( $name != "mediawiki" ) {
 567                         return $this->throwXMLerror( "Expected <mediawiki>, got <$name>" );
 568                 }
 569                 xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 570         }
 571
 572         function in_mediawiki( $parser, $name, $attribs ) {
 573                 $this->debug( "in_mediawiki $name" );
 574                 if( $name == 'siteinfo' ) {
 575                         xml_set_element_handler( $parser, "in_siteinfo", "out_siteinfo" );
 576                 } elseif( $name == 'page' ) {
 577                         $this->workRevisionCount = 0;
 578                         $this->workSuccessCount = 0;
 579                         xml_set_element_handler( $parser, "in_page", "out_page" );
 580                 } else {
 581                         return $this->throwXMLerror( "Expected <page>, got <$name>" );
 582                 }
 583         }
 584         function out_mediawiki( $parser, $name ) {
 585                 $this->debug( "out_mediawiki $name" );
 586                 if( $name != "mediawiki" ) {
 587                         return $this->throwXMLerror( "Expected </mediawiki>, got </$name>" );
 588                 }
 589                 xml_set_element_handler( $parser, "donothing", "donothing" );
 590         }
 591
 592
 593         function in_siteinfo( $parser, $name, $attribs ) {
 594                 // no-ops for now
 595                 $this->debug( "in_siteinfo $name" );
 596                 switch( $name ) {
 597                 case "sitename":
 598                 case "base":
 599                 case "generator":
 600                 case "case":
 601                 case "namespaces":
 602                 case "namespace":
 603                         break;
 604                 default:
 605                         return $this->throwXMLerror( "Element <$name> not allowed in <siteinfo>." );
 606                 }
 607         }
 608
 609         function out_siteinfo( $parser, $name ) {
 610                 if( $name == "siteinfo" ) {
 611                         xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 612                 }
 613         }
 614
 615
 616         function in_page( $parser, $name, $attribs ) {
 617                 $this->debug( "in_page $name" );
 618                 switch( $name ) {
 619                 case "id":
 620                 case "title":
 621                 case "restrictions":
 622                         $this->appendfield = $name;
 623                         $this->appenddata = "";
 624                         $this->parenttag = "page";
 625                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 626                         xml_set_character_data_handler( $parser, "char_append" );
 627                         break;
 628                 case "revision":
 629                         $this->workRevision = new WikiRevision;
 630                         $this->workRevision->setTitle( $this->pageTitle );
 631                         $this->workRevisionCount++;
 632                         xml_set_element_handler( $parser, "in_revision", "out_revision" );
 633                         break;
 634                 default:
 635                         return $this->throwXMLerror( "Element <$name> not allowed in a <page>." );
 636                 }
 637         }
 638
 639         function out_page( $parser, $name ) {
 640                 $this->debug( "out_page $name" );
 641                 if( $name != "page" ) {
 642                         return $this->throwXMLerror( "Expected </page>, got </$name>" );
 643                 }
 644                 xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 645
 646                 $this->pageOutCallback( $this->pageTitle, $this->origTitle,
 647                         $this->workRevisionCount, $this->workSuccessCount );
 648
 649                 $this->workTitle = null;
 650                 $this->workRevision = null;
 651                 $this->workRevisionCount = 0;
 652                 $this->workSuccessCount = 0;
 653                 $this->pageTitle = null;
 654                 $this->origTitle = null;
 655         }
 656
 657         function in_nothing( $parser, $name, $attribs ) {
 658                 $this->debug( "in_nothing $name" );
 659                 return $this->throwXMLerror( "No child elements allowed here; got <$name>" );
 660         }
 661         function char_append( $parser, $data ) {
 662                 $this->debug( "char_append '$data'" );
 663                 $this->appenddata .= $data;
 664         }
 665         function out_append( $parser, $name ) {
 666                 $this->debug( "out_append $name" );
 667                 if( $name != $this->appendfield ) {
 668                         return $this->throwXMLerror( "Expected </{$this->appendfield}>, got </$name>" );
 669                 }
 670                 xml_set_element_handler( $parser, "in_$this->parenttag", "out_$this->parenttag" );
 671                 xml_set_character_data_handler( $parser, "donothing" );
 672
 673                 switch( $this->appendfield ) {
 674                 case "title":
 675                         $this->workTitle = $this->appenddata;
 676                         $this->origTitle = Title::newFromText( $this->workTitle );
 677                         if( !is_null( $this->mTargetNamespace ) && !is_null( $this->origTitle ) ) {
 678                                 $this->pageTitle = Title::makeTitle( $this->mTargetNamespace,
 679                                         $this->origTitle->getDbKey() );
 680                         } else {
 681                                 $this->pageTitle = Title::newFromText( $this->workTitle );
 682                         }
 683                         $this->pageCallback( $this->workTitle );
 684                         break;
 685                 case "id":
 686                         if ( $this->parenttag == 'revision' ) {
 687                                 $this->workRevision->setID( $this->appenddata );
 688                         }
 689                         break;
 690                 case "text":
 691                         $this->workRevision->setText( $this->appenddata );
 692                         break;
 693                 case "username":
 694                         $this->workRevision->setUsername( $this->appenddata );
 695                         break;
 696                 case "ip":
 697                         $this->workRevision->setUserIP( $this->appenddata );
 698                         break;
 699                 case "timestamp":
 700                         $this->workRevision->setTimestamp( $this->appenddata );
 701                         break;
 702                 case "comment":
 703                         $this->workRevision->setComment( $this->appenddata );
 704                         break;
 705                 case "minor":
 706                         $this->workRevision->setMinor( true );
 707                         break;
 708                 default:
 709                         $this->debug( "Bad append: {$this->appendfield}" );
 710                 }
 711                 $this->appendfield = "";
 712                 $this->appenddata = "";
 713         }
 714
 715         function in_revision( $parser, $name, $attribs ) {
 716                 $this->debug( "in_revision $name" );
 717                 switch( $name ) {
 718                 case "id":
 719                 case "timestamp":
 720                 case "comment":
 721                 case "minor":
 722                 case "text":
 723                         $this->parenttag = "revision";
 724                         $this->appendfield = $name;
 725                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 726                         xml_set_character_data_handler( $parser, "char_append" );
 727                         break;
 728                 case "contributor":
 729                         xml_set_element_handler( $parser, "in_contributor", "out_contributor" );
 730                         break;
 731                 default:
 732                         return $this->throwXMLerror( "Element <$name> not allowed in a <revision>." );
 733                 }
 734         }
 735
 736         function out_revision( $parser, $name ) {
 737                 $this->debug( "out_revision $name" );
 738                 if( $name != "revision" ) {
 739                         return $this->throwXMLerror( "Expected </revision>, got </$name>" );
 740                 }
 741                 xml_set_element_handler( $parser, "in_page", "out_page" );
 742
 743                 $ok = call_user_func_array( $this->mRevisionCallback,
 744                         array( &$this->workRevision, &$this ) );
 745                 if( $ok ) {
 746                         $this->workSuccessCount++;
 747                 }
 748         }
 749
 750         function in_contributor( $parser, $name, $attribs ) {
 751                 $this->debug( "in_contributor $name" );
 752                 switch( $name ) {
 753                 case "username":
 754                 case "ip":
 755                 case "id":
 756                         $this->parenttag = "contributor";
 757                         $this->appendfield = $name;
 758                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 759                         xml_set_character_data_handler( $parser, "char_append" );
 760                         break;
 761                 default:
 762                         $this->throwXMLerror( "Invalid tag <$name> in <contributor>" );
 763                 }
 764         }
 765
 766         function out_contributor( $parser, $name ) {
 767                 $this->debug( "out_contributor $name" );
 768                 if( $name != "contributor" ) {
 769                         return $this->throwXMLerror( "Expected </contributor>, got </$name>" );
 770                 }
 771                 xml_set_element_handler( $parser, "in_revision", "out_revision" );
 772         }
 773
 774 }
 775
 776 /** @package MediaWiki */
 777 class ImportStringSource {
 778         function ImportStringSource( $string ) {
 779                 $this->mString = $string;
 780                 $this->mRead = false;
 781         }
 782
 783         function atEnd() {
 784                 return $this->mRead;
 785         }
 786
 787         function readChunk() {
 788                 if( $this->atEnd() ) {
 789                         return false;
 790                 } else {
 791                         $this->mRead = true;
 792                         return $this->mString;
 793                 }
 794         }
 795 }
 796
 797 /** @package MediaWiki */
 798 class ImportStreamSource {
 799         function ImportStreamSource( $handle ) {
 800                 $this->mHandle = $handle;
 801         }
 802
 803         function atEnd() {
 804                 return feof( $this->mHandle );
 805         }
 806
 807         function readChunk() {
 808                 return fread( $this->mHandle, 32768 );
 809         }
 810
 811         function newFromFile( $filename ) {
 812                 $file = @fopen( $filename, 'rt' );
 813                 if( !$file ) {
 814                         return new WikiErrorMsg( "importcantopen" );
 815                 }
 816                 return new ImportStreamSource( $file );
 817         }
 818
 819         function newFromUpload( $fieldname = "xmlimport" ) {
 820                 $upload =& $_FILES[$fieldname];
 821
 822                 if( !isset( $upload ) || !$upload['name'] ) {
 823                         return new WikiErrorMsg( 'importnofile' );
 824                 }
 825                 if( !empty( $upload['error'] ) ) {
 826                         return new WikiErrorMsg( 'importuploaderror', $upload['error'] );
 827                 }
 828                 $fname = $upload['tmp_name'];
 829                 if( is_uploaded_file( $fname ) ) {
 830                         return ImportStreamSource::newFromFile( $fname );
 831                 } else {
 832                         return new WikiErrorMsg( 'importnofile' );
 833                 }
 834         }
 835
 836         function newFromURL( $url ) {
 837                 wfDebug( __METHOD__ . ": opening $url\n" );
 838                 # fopen-wrappers are normally turned off for security.
 839                 ini_set( "allow_url_fopen", true );
 840                 $ret = ImportStreamSource::newFromFile( $url );
 841                 ini_set( "allow_url_fopen", false );
 842                 return $ret;
 843         }
 844
 845         function newFromInterwiki( $interwiki, $page, $history=false ) {
 846                 $link = Title::newFromText( "$interwiki:Special:Export/$page" );
 847                 if( is_null( $link ) || $link->getInterwiki() == '' ) {
 848                         return new WikiErrorMsg( 'importbadinterwiki' );
 849                 } else {
 850                         $params = $history ? 'history=1' : '';
 851                         $url = $link->getFullUrl( $params );
 852                         return ImportStreamSource::newFromURL( $url );
 853                 }
 854         }
 855 }
 856
 857
 858 ?>