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