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, $wgUser, $wgLang, $wgContLang;
 180
 181                 $skin = $wgUser->getSkin();
 182
 183                 $this->mPageCount++;
 184
 185                 $localCount = $wgLang->formatNum( $successCount );
 186                 $contentCount = $wgContLang->formatNum( $successCount );
 187
 188                 $wgOut->addHtml( "<li>" . $skin->makeKnownLinkObj( $title ) .
 189                         " " .
 190                         wfMsgExt( 'import-revision-count', array( 'parsemag', 'escape' ), $localCount ) .
 191                         "</li>\n" );
 192
 193                 if( $successCount > 0 ) {
 194                         $log = new LogPage( 'import' );
 195                         if( $this->mIsUpload ) {
 196                                 $detail = wfMsgForContent( 'import-logentry-upload-detail',
 197                                         $contentCount );
 198                                 $log->addEntry( 'upload', $title, $detail );
 199                         } else {
 200                                 $interwiki = '[[:' . $this->mInterwiki . ':' .
 201                                         $origTitle->getPrefixedText() . ']]';
 202                                 $detail = wfMsgForContent( 'import-logentry-interwiki-detail',
 203                                         $contentCount, $interwiki );
 204                                 $log->addEntry( 'interwiki', $title, $detail );
 205                         }
 206
 207                         $comment = $detail; // quick
 208                         $dbw = wfGetDB( DB_MASTER );
 209                         $nullRevision = Revision::newNullRevision(
 210                                 $dbw, $title->getArticleId(), $comment, true );
 211                         $nullRevId = $nullRevision->insertOn( $dbw );
 212                 }
 213         }
 214
 215         function close() {
 216                 global $wgOut;
 217                 if( $this->mPageCount == 0 ) {
 218                         $wgOut->addHtml( "<li>" . wfMsgHtml( 'importnopages' ) . "</li>\n" );
 219                 }
 220                 $wgOut->addHtml( "</ul>\n" );
 221         }
 222 }
 223
 224 /**
 225  *
 226  * @package MediaWiki
 227  * @subpackage SpecialPage
 228  */
 229 class WikiRevision {
 230         var $title = null;
 231         var $id = 0;
 232         var $timestamp = "20010115000000";
 233         var $user = 0;
 234         var $user_text = "";
 235         var $text = "";
 236         var $comment = "";
 237         var $minor = false;
 238
 239         function setTitle( $title ) {
 240                 if( is_object( $title ) ) {
 241                         $this->title = $title;
 242                 } elseif( is_null( $title ) ) {
 243                         throw new MWException( "WikiRevision given a null title in import. You may need to adjust \$wgLegalTitleChars." );
 244                 } else {
 245                         throw new MWException( "WikiRevision given non-object title in import." );
 246                 }
 247         }
 248
 249         function setID( $id ) {
 250                 $this->id = $id;
 251         }
 252
 253         function setTimestamp( $ts ) {
 254                 # 2003-08-05T18:30:02Z
 255                 $this->timestamp = wfTimestamp( TS_MW, $ts );
 256         }
 257
 258         function setUsername( $user ) {
 259                 $this->user_text = $user;
 260         }
 261
 262         function setUserIP( $ip ) {
 263                 $this->user_text = $ip;
 264         }
 265
 266         function setText( $text ) {
 267                 $this->text = $text;
 268         }
 269
 270         function setComment( $text ) {
 271                 $this->comment = $text;
 272         }
 273
 274         function setMinor( $minor ) {
 275                 $this->minor = (bool)$minor;
 276         }
 277
 278         function getTitle() {
 279                 return $this->title;
 280         }
 281
 282         function getID() {
 283                 return $this->id;
 284         }
 285
 286         function getTimestamp() {
 287                 return $this->timestamp;
 288         }
 289
 290         function getUser() {
 291                 return $this->user_text;
 292         }
 293
 294         function getText() {
 295                 return $this->text;
 296         }
 297
 298         function getComment() {
 299                 return $this->comment;
 300         }
 301
 302         function getMinor() {
 303                 return $this->minor;
 304         }
 305
 306         function importOldRevision() {
 307                 $fname = "WikiImporter::importOldRevision";
 308                 $dbw =& wfGetDB( DB_MASTER );
 309
 310                 # Sneak a single revision into place
 311                 $user = User::newFromName( $this->getUser() );
 312                 if( $user ) {
 313                         $userId = intval( $user->getId() );
 314                         $userText = $user->getName();
 315                 } else {
 316                         $userId = 0;
 317                         $userText = $this->getUser();
 318                 }
 319
 320                 // avoid memory leak...?
 321                 $linkCache =& LinkCache::singleton();
 322                 $linkCache->clear();
 323
 324                 $article = new Article( $this->title );
 325                 $pageId = $article->getId();
 326                 if( $pageId == 0 ) {
 327                         # must create the page...
 328                         $pageId = $article->insertOn( $dbw );
 329                         $created = true;
 330                 } else {
 331                         $created = false;
 332
 333                         $prior = Revision::loadFromTimestamp( $dbw, $this->title, $this->timestamp );
 334                         if( !is_null( $prior ) ) {
 335                                 // FIXME: this could fail slightly for multiple matches :P
 336                                 wfDebug( __METHOD__ . ": skipping existing revision for [[" .
 337                                         $this->title->getPrefixedText() . "]], timestamp " .
 338                                         $this->timestamp . "\n" );
 339                                 return false;
 340                         }
 341                 }
 342
 343                 # FIXME: Use original rev_id optionally
 344                 # FIXME: blah blah blah
 345
 346                 #if( $numrows > 0 ) {
 347                 #       return wfMsg( "importhistoryconflict" );
 348                 #}
 349
 350                 # Insert the row
 351                 $revision = new Revision( array(
 352                         'page'       => $pageId,
 353                         'text'       => $this->getText(),
 354                         'comment'    => $this->getComment(),
 355                         'user'       => $userId,
 356                         'user_text'  => $userText,
 357                         'timestamp'  => $this->timestamp,
 358                         'minor_edit' => $this->minor,
 359                         ) );
 360                 $revId = $revision->insertOn( $dbw );
 361                 $changed = $article->updateIfNewerOn( $dbw, $revision );
 362
 363                 if( $created ) {
 364                         wfDebug( __METHOD__ . ": running onArticleCreate\n" );
 365                         Article::onArticleCreate( $this->title );
 366
 367                         wfDebug( __METHOD__ . ": running create updates\n" );
 368                         $article->createUpdates( $revision );
 369
 370                 } elseif( $changed ) {
 371                         wfDebug( __METHOD__ . ": running onArticleEdit\n" );
 372                         Article::onArticleEdit( $this->title );
 373
 374                         wfDebug( __METHOD__ . ": running edit updates\n" );
 375                         $article->editUpdates(
 376                                 $this->getText(),
 377                                 $this->getComment(),
 378                                 $this->minor,
 379                                 $this->timestamp,
 380                                 $revId );
 381                 }
 382
 383                 return true;
 384         }
 385
 386 }
 387
 388 /**
 389  *
 390  * @package MediaWiki
 391  * @subpackage SpecialPage
 392  */
 393 class WikiImporter {
 394         var $mSource = null;
 395         var $mPageCallback = null;
 396         var $mPageOutCallback = null;
 397         var $mRevisionCallback = null;
 398         var $mTargetNamespace = null;
 399         var $lastfield;
 400
 401         function WikiImporter( $source ) {
 402                 $this->setRevisionCallback( array( &$this, "importRevision" ) );
 403                 $this->mSource = $source;
 404         }
 405
 406         function throwXmlError( $err ) {
 407                 $this->debug( "FAILURE: $err" );
 408                 wfDebug( "WikiImporter XML error: $err\n" );
 409         }
 410
 411         # --------------
 412
 413         function doImport() {
 414                 if( empty( $this->mSource ) ) {
 415                         return new WikiErrorMsg( "importnotext" );
 416                 }
 417
 418                 $parser = xml_parser_create( "UTF-8" );
 419
 420                 # case folding violates XML standard, turn it off
 421                 xml_parser_set_option( $parser, XML_OPTION_CASE_FOLDING, false );
 422
 423                 xml_set_object( $parser, $this );
 424                 xml_set_element_handler( $parser, "in_start", "" );
 425
 426                 $offset = 0; // for context extraction on error reporting
 427                 do {
 428                         $chunk = $this->mSource->readChunk();
 429                         if( !xml_parse( $parser, $chunk, $this->mSource->atEnd() ) ) {
 430                                 wfDebug( "WikiImporter::doImport encountered XML parsing error\n" );
 431                                 return new WikiXmlError( $parser, 'XML import parse failure', $chunk, $offset );
 432                         }
 433                         $offset += strlen( $chunk );
 434                 } while( $chunk !== false && !$this->mSource->atEnd() );
 435                 xml_parser_free( $parser );
 436
 437                 return true;
 438         }
 439
 440         function debug( $data ) {
 441                 #wfDebug( "IMPORT: $data\n" );
 442         }
 443
 444         function notice( $data ) {
 445                 global $wgCommandLineMode;
 446                 if( $wgCommandLineMode ) {
 447                         print "$data\n";
 448                 } else {
 449                         global $wgOut;
 450                         $wgOut->addHTML( "<li>$data</li>\n" );
 451                 }
 452         }
 453
 454         /**
 455          * Sets the action to perform as each new page in the stream is reached.
 456          * @param callable $callback
 457          * @return callable
 458          */
 459         function setPageCallback( $callback ) {
 460                 $previous = $this->mPageCallback;
 461                 $this->mPageCallback = $callback;
 462                 return $previous;
 463         }
 464
 465         /**
 466          * Sets the action to perform as each page in the stream is completed.
 467          * Callback accepts the page title (as a Title object), a second object
 468          * with the original title form (in case it's been overridden into a
 469          * local namespace), and a count of revisions.
 470          *
 471          * @param callable $callback
 472          * @return callable
 473          */
 474         function setPageOutCallback( $callback ) {
 475                 $previous = $this->mPageOutCallback;
 476                 $this->mPageOutCallback = $callback;
 477                 return $previous;
 478         }
 479
 480         /**
 481          * Sets the action to perform as each page revision is reached.
 482          * @param callable $callback
 483          * @return callable
 484          */
 485         function setRevisionCallback( $callback ) {
 486                 $previous = $this->mRevisionCallback;
 487                 $this->mRevisionCallback = $callback;
 488                 return $previous;
 489         }
 490
 491         /**
 492          * Set a target namespace to override the defaults
 493          */
 494         function setTargetNamespace( $namespace ) {
 495                 if( is_null( $namespace ) ) {
 496                         // Don't override namespaces
 497                         $this->mTargetNamespace = null;
 498                 } elseif( $namespace >= 0 ) {
 499                         // FIXME: Check for validity
 500                         $this->mTargetNamespace = intval( $namespace );
 501                 } else {
 502                         return false;
 503                 }
 504         }
 505
 506         /**
 507          * Default per-revision callback, performs the import.
 508          * @param WikiRevision $revision
 509          * @private
 510          */
 511         function importRevision( &$revision ) {
 512                 $dbw =& wfGetDB( DB_MASTER );
 513                 return $dbw->deadlockLoop( array( &$revision, 'importOldRevision' ) );
 514         }
 515
 516         /**
 517          * Alternate per-revision callback, for debugging.
 518          * @param WikiRevision $revision
 519          * @private
 520          */
 521         function debugRevisionHandler( &$revision ) {
 522                 $this->debug( "Got revision:" );
 523                 if( is_object( $revision->title ) ) {
 524                         $this->debug( "-- Title: " . $revision->title->getPrefixedText() );
 525                 } else {
 526                         $this->debug( "-- Title: <invalid>" );
 527                 }
 528                 $this->debug( "-- User: " . $revision->user_text );
 529                 $this->debug( "-- Timestamp: " . $revision->timestamp );
 530                 $this->debug( "-- Comment: " . $revision->comment );
 531                 $this->debug( "-- Text: " . $revision->text );
 532         }
 533
 534         /**
 535          * Notify the callback function when a new <page> is reached.
 536          * @param Title $title
 537          * @private
 538          */
 539         function pageCallback( $title ) {
 540                 if( is_callable( $this->mPageCallback ) ) {
 541                         call_user_func( $this->mPageCallback, $title );
 542                 }
 543         }
 544
 545         /**
 546          * Notify the callback function when a </page> is closed.
 547          * @param Title $title
 548          * @param Title $origTitle
 549          * @param int $revisionCount
 550          * @param int $successCount number of revisions for which callback returned true
 551          * @private
 552          */
 553         function pageOutCallback( $title, $origTitle, $revisionCount, $successCount ) {
 554                 if( is_callable( $this->mPageOutCallback ) ) {
 555                         call_user_func( $this->mPageOutCallback, $title, $origTitle,
 556                                 $revisionCount, $successCount );
 557                 }
 558         }
 559
 560
 561         # XML parser callbacks from here out -- beware!
 562         function donothing( $parser, $x, $y="" ) {
 563                 #$this->debug( "donothing" );
 564         }
 565
 566         function in_start( $parser, $name, $attribs ) {
 567                 $this->debug( "in_start $name" );
 568                 if( $name != "mediawiki" ) {
 569                         return $this->throwXMLerror( "Expected <mediawiki>, got <$name>" );
 570                 }
 571                 xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 572         }
 573
 574         function in_mediawiki( $parser, $name, $attribs ) {
 575                 $this->debug( "in_mediawiki $name" );
 576                 if( $name == 'siteinfo' ) {
 577                         xml_set_element_handler( $parser, "in_siteinfo", "out_siteinfo" );
 578                 } elseif( $name == 'page' ) {
 579                         $this->workRevisionCount = 0;
 580                         $this->workSuccessCount = 0;
 581                         xml_set_element_handler( $parser, "in_page", "out_page" );
 582                 } else {
 583                         return $this->throwXMLerror( "Expected <page>, got <$name>" );
 584                 }
 585         }
 586         function out_mediawiki( $parser, $name ) {
 587                 $this->debug( "out_mediawiki $name" );
 588                 if( $name != "mediawiki" ) {
 589                         return $this->throwXMLerror( "Expected </mediawiki>, got </$name>" );
 590                 }
 591                 xml_set_element_handler( $parser, "donothing", "donothing" );
 592         }
 593
 594
 595         function in_siteinfo( $parser, $name, $attribs ) {
 596                 // no-ops for now
 597                 $this->debug( "in_siteinfo $name" );
 598                 switch( $name ) {
 599                 case "sitename":
 600                 case "base":
 601                 case "generator":
 602                 case "case":
 603                 case "namespaces":
 604                 case "namespace":
 605                         break;
 606                 default:
 607                         return $this->throwXMLerror( "Element <$name> not allowed in <siteinfo>." );
 608                 }
 609         }
 610
 611         function out_siteinfo( $parser, $name ) {
 612                 if( $name == "siteinfo" ) {
 613                         xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 614                 }
 615         }
 616
 617
 618         function in_page( $parser, $name, $attribs ) {
 619                 $this->debug( "in_page $name" );
 620                 switch( $name ) {
 621                 case "id":
 622                 case "title":
 623                 case "restrictions":
 624                         $this->appendfield = $name;
 625                         $this->appenddata = "";
 626                         $this->parenttag = "page";
 627                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 628                         xml_set_character_data_handler( $parser, "char_append" );
 629                         break;
 630                 case "revision":
 631                         $this->workRevision = new WikiRevision;
 632                         $this->workRevision->setTitle( $this->pageTitle );
 633                         $this->workRevisionCount++;
 634                         xml_set_element_handler( $parser, "in_revision", "out_revision" );
 635                         break;
 636                 default:
 637                         return $this->throwXMLerror( "Element <$name> not allowed in a <page>." );
 638                 }
 639         }
 640
 641         function out_page( $parser, $name ) {
 642                 $this->debug( "out_page $name" );
 643                 if( $name != "page" ) {
 644                         return $this->throwXMLerror( "Expected </page>, got </$name>" );
 645                 }
 646                 xml_set_element_handler( $parser, "in_mediawiki", "out_mediawiki" );
 647
 648                 $this->pageOutCallback( $this->pageTitle, $this->origTitle,
 649                         $this->workRevisionCount, $this->workSuccessCount );
 650
 651                 $this->workTitle = null;
 652                 $this->workRevision = null;
 653                 $this->workRevisionCount = 0;
 654                 $this->workSuccessCount = 0;
 655                 $this->pageTitle = null;
 656                 $this->origTitle = null;
 657         }
 658
 659         function in_nothing( $parser, $name, $attribs ) {
 660                 $this->debug( "in_nothing $name" );
 661                 return $this->throwXMLerror( "No child elements allowed here; got <$name>" );
 662         }
 663         function char_append( $parser, $data ) {
 664                 $this->debug( "char_append '$data'" );
 665                 $this->appenddata .= $data;
 666         }
 667         function out_append( $parser, $name ) {
 668                 $this->debug( "out_append $name" );
 669                 if( $name != $this->appendfield ) {
 670                         return $this->throwXMLerror( "Expected </{$this->appendfield}>, got </$name>" );
 671                 }
 672                 xml_set_element_handler( $parser, "in_$this->parenttag", "out_$this->parenttag" );
 673                 xml_set_character_data_handler( $parser, "donothing" );
 674
 675                 switch( $this->appendfield ) {
 676                 case "title":
 677                         $this->workTitle = $this->appenddata;
 678                         $this->origTitle = Title::newFromText( $this->workTitle );
 679                         if( !is_null( $this->mTargetNamespace ) && !is_null( $this->origTitle ) ) {
 680                                 $this->pageTitle = Title::makeTitle( $this->mTargetNamespace,
 681                                         $this->origTitle->getDbKey() );
 682                         } else {
 683                                 $this->pageTitle = Title::newFromText( $this->workTitle );
 684                         }
 685                         $this->pageCallback( $this->workTitle );
 686                         break;
 687                 case "id":
 688                         if ( $this->parenttag == 'revision' ) {
 689                                 $this->workRevision->setID( $this->appenddata );
 690                         }
 691                         break;
 692                 case "text":
 693                         $this->workRevision->setText( $this->appenddata );
 694                         break;
 695                 case "username":
 696                         $this->workRevision->setUsername( $this->appenddata );
 697                         break;
 698                 case "ip":
 699                         $this->workRevision->setUserIP( $this->appenddata );
 700                         break;
 701                 case "timestamp":
 702                         $this->workRevision->setTimestamp( $this->appenddata );
 703                         break;
 704                 case "comment":
 705                         $this->workRevision->setComment( $this->appenddata );
 706                         break;
 707                 case "minor":
 708                         $this->workRevision->setMinor( true );
 709                         break;
 710                 default:
 711                         $this->debug( "Bad append: {$this->appendfield}" );
 712                 }
 713                 $this->appendfield = "";
 714                 $this->appenddata = "";
 715         }
 716
 717         function in_revision( $parser, $name, $attribs ) {
 718                 $this->debug( "in_revision $name" );
 719                 switch( $name ) {
 720                 case "id":
 721                 case "timestamp":
 722                 case "comment":
 723                 case "minor":
 724                 case "text":
 725                         $this->parenttag = "revision";
 726                         $this->appendfield = $name;
 727                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 728                         xml_set_character_data_handler( $parser, "char_append" );
 729                         break;
 730                 case "contributor":
 731                         xml_set_element_handler( $parser, "in_contributor", "out_contributor" );
 732                         break;
 733                 default:
 734                         return $this->throwXMLerror( "Element <$name> not allowed in a <revision>." );
 735                 }
 736         }
 737
 738         function out_revision( $parser, $name ) {
 739                 $this->debug( "out_revision $name" );
 740                 if( $name != "revision" ) {
 741                         return $this->throwXMLerror( "Expected </revision>, got </$name>" );
 742                 }
 743                 xml_set_element_handler( $parser, "in_page", "out_page" );
 744
 745                 $ok = call_user_func_array( $this->mRevisionCallback,
 746                         array( &$this->workRevision, &$this ) );
 747                 if( $ok ) {
 748                         $this->workSuccessCount++;
 749                 }
 750         }
 751
 752         function in_contributor( $parser, $name, $attribs ) {
 753                 $this->debug( "in_contributor $name" );
 754                 switch( $name ) {
 755                 case "username":
 756                 case "ip":
 757                 case "id":
 758                         $this->parenttag = "contributor";
 759                         $this->appendfield = $name;
 760                         xml_set_element_handler( $parser, "in_nothing", "out_append" );
 761                         xml_set_character_data_handler( $parser, "char_append" );
 762                         break;
 763                 default:
 764                         $this->throwXMLerror( "Invalid tag <$name> in <contributor>" );
 765                 }
 766         }
 767
 768         function out_contributor( $parser, $name ) {
 769                 $this->debug( "out_contributor $name" );
 770                 if( $name != "contributor" ) {
 771                         return $this->throwXMLerror( "Expected </contributor>, got </$name>" );
 772                 }
 773                 xml_set_element_handler( $parser, "in_revision", "out_revision" );
 774         }
 775
 776 }
 777
 778 /** @package MediaWiki */
 779 class ImportStringSource {
 780         function ImportStringSource( $string ) {
 781                 $this->mString = $string;
 782                 $this->mRead = false;
 783         }
 784
 785         function atEnd() {
 786                 return $this->mRead;
 787         }
 788
 789         function readChunk() {
 790                 if( $this->atEnd() ) {
 791                         return false;
 792                 } else {
 793                         $this->mRead = true;
 794                         return $this->mString;
 795                 }
 796         }
 797 }
 798
 799 /** @package MediaWiki */
 800 class ImportStreamSource {
 801         function ImportStreamSource( $handle ) {
 802                 $this->mHandle = $handle;
 803         }
 804
 805         function atEnd() {
 806                 return feof( $this->mHandle );
 807         }
 808
 809         function readChunk() {
 810                 return fread( $this->mHandle, 32768 );
 811         }
 812
 813         function newFromFile( $filename ) {
 814                 $file = @fopen( $filename, 'rt' );
 815                 if( !$file ) {
 816                         return new WikiErrorMsg( "importcantopen" );
 817                 }
 818                 return new ImportStreamSource( $file );
 819         }
 820
 821         function newFromUpload( $fieldname = "xmlimport" ) {
 822                 $upload =& $_FILES[$fieldname];
 823
 824                 if( !isset( $upload ) || !$upload['name'] ) {
 825                         return new WikiErrorMsg( 'importnofile' );
 826                 }
 827                 if( !empty( $upload['error'] ) ) {
 828                         return new WikiErrorMsg( 'importuploaderror', $upload['error'] );
 829                 }
 830                 $fname = $upload['tmp_name'];
 831                 if( is_uploaded_file( $fname ) ) {
 832                         return ImportStreamSource::newFromFile( $fname );
 833                 } else {
 834                         return new WikiErrorMsg( 'importnofile' );
 835                 }
 836         }
 837
 838         function newFromURL( $url ) {
 839                 wfDebug( __METHOD__ . ": opening $url\n" );
 840                 # fopen-wrappers are normally turned off for security.
 841                 ini_set( "allow_url_fopen", true );
 842                 $ret = ImportStreamSource::newFromFile( $url );
 843                 ini_set( "allow_url_fopen", false );
 844                 return $ret;
 845         }
 846
 847         function newFromInterwiki( $interwiki, $page, $history=false ) {
 848                 $base = Title::getInterwikiLink( $interwiki );
 849                 $link = Title::newFromText( "$interwiki:Special:Export/$page" );
 850                 if( empty( $base ) || empty( $link ) ) {
 851                         return new WikiErrorMsg( 'importbadinterwiki' );
 852                 } else {
 853                         $params = $history ? 'history=1' : '';
 854                         $url = $link->getFullUrl( $params );
 855                         return ImportStreamSource::newFromURL( $url );
 856                 }
 857         }
 858 }
 859
 860
 861 ?>