includes/Article.php

   1 <?
   2 # Class representing a Wikipedia article and history.
   3 # See design.doc for an overview.
   4
   5 # Note: edit user interface and cache support functions have been
   6 # moved to separate EditPage and CacheManager classes.
   7
   8 /* CHECK MERGE @@@
   9    TEST THIS @@@
  10
  11    * s/\$wgTitle/\$this->mTitle/ performed, many replacements
  12    * mTitle variable added to class
  13 */
  14
  15 include_once( "CacheManager.php" );
  16
  17 class Article {
  18         /* private */ var $mContent, $mContentLoaded;
  19         /* private */ var $mUser, $mTimestamp, $mUserText;
  20         /* private */ var $mCounter, $mComment, $mCountAdjustment;
  21         /* private */ var $mMinorEdit, $mRedirectedFrom;
  22         /* private */ var $mTouched, $mFileCache, $mTitle;
  23
  24         function Article( &$title ) {
  25                 $this->mTitle =& $title;
  26                 $this->clear();
  27         }
  28
  29         /* private */ function clear()
  30         {
  31                 $this->mContentLoaded = false;
  32                 $this->mUser = $this->mCounter = -1; # Not loaded
  33                 $this->mRedirectedFrom = $this->mUserText =
  34                 $this->mTimestamp = $this->mComment = $this->mFileCache = "";
  35                 $this->mCountAdjustment = 0;
  36                 $this->mTouched = "19700101000000";
  37         }
  38
  39         # Note that getContent/loadContent may follow redirects if
  40         # not told otherwise, and so may cause a change to mTitle.
  41
  42         function getContent( $noredir = false )
  43         {
  44                 global $action,$section,$count; # From query string
  45                 $fname =  "Article::getContent";
  46                 wfProfileIn( $fname );
  47
  48                 if ( 0 == $this->getID() ) {
  49                         if ( "edit" == $action ) {
  50                                 wfProfileOut( $fname );
  51                                 return ""; # was "newarticletext", now moved above the box)
  52                         }
  53                         wfProfileOut( $fname );
  54                         return wfMsg( "noarticletext" );
  55                 } else {
  56                         $this->loadContent( $noredir );
  57
  58                         if(
  59                                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
  60                                 ( $this->mTitle->getNamespace() == Namespace::getTalk( Namespace::getUser()) ) &&
  61                                   preg_match("/^\d{1,3}\.\d{1,3}.\d{1,3}\.\d{1,3}$/",$this->mTitle->getText()) &&
  62                                   $action=="view"
  63                                 )
  64                                 {
  65                                 wfProfileOut( $fname );
  66                                 return $this->mContent . "\n" .wfMsg("anontalkpagetext"); }
  67                         else {
  68                                 if($action=="edit") {
  69                                         if($section!="") {
  70                                                 if($section=="new") {
  71                                                         wfProfileOut( $fname );
  72                                                         return "";
  73                                                 }
  74
  75                                                 $secs=preg_split("/(^=+.*?=+|^<h[1-6].*?>.*?<\/h[1-6].*?>)/mi",
  76                                                  $this->mContent, -1,
  77                                                  PREG_SPLIT_DELIM_CAPTURE);
  78                                                 if($section==0) {
  79                                                         wfProfileOut( $fname );
  80                                                         return trim($secs[0]);
  81                                                 } else {
  82                                                         wfProfileOut( $fname );
  83                                                         return trim($secs[$section*2-1] . $secs[$section*2]);
  84                                                 }
  85                                         }
  86                                 }
  87                                 wfProfileOut( $fname );
  88                                 return $this->mContent;
  89                         }
  90                 }
  91         }
  92
  93         function loadContent( $noredir = false )
  94         {
  95                 global $wgOut, $wgMwRedir;
  96                 global $oldid, $redirect; # From query
  97
  98                 if ( $this->mContentLoaded ) return;
  99                 $fname = "Article::loadContent";
 100
 101                 # Pre-fill content with error message so that if something
 102                 # fails we'll have something telling us what we intended.
 103
 104                 $t = $this->mTitle->getPrefixedText();
 105                 if ( isset( $oldid ) ) {
 106                         $oldid = IntVal( $oldid );
 107                         $t .= ",oldid={$oldid}";
 108                 }
 109                 if ( isset( $redirect ) ) {
 110                         $redirect = ($redirect == "no") ? "no" : "yes";
 111                         $t .= ",redirect={$redirect}";
 112                 }
 113                 $this->mContent = wfMsg( "missingarticle", $t );
 114
 115                 if ( ! $oldid ) {       # Retrieve current version
 116                         $id = $this->getID();
 117                         if ( 0 == $id ) return;
 118
 119                         $sql = "SELECT " .
 120                           "cur_text,cur_timestamp,cur_user,cur_counter,cur_restrictions,cur_touched " .
 121                           "FROM cur WHERE cur_id={$id}";
 122                         wfDebug( "$sql\n" );
 123                         $res = wfQuery( $sql, DB_READ, $fname );
 124                         if ( 0 == wfNumRows( $res ) ) {
 125                                 return;
 126                         }
 127
 128                         $s = wfFetchObject( $res );
 129                         # If we got a redirect, follow it (unless we've been told
 130                         # not to by either the function parameter or the query
 131                         if ( ( "no" != $redirect ) && ( false == $noredir ) &&
 132                           ( $wgMwRedir->matchStart( $s->cur_text ) ) ) {
 133                                 if ( preg_match( "/\\[\\[([^\\]\\|]+)[\\]\\|]/",
 134                                   $s->cur_text, $m ) ) {
 135                                         $rt = Title::newFromText( $m[1] );
 136
 137                                         # Gotta hand redirects to special pages differently:
 138                                         # Fill the HTTP response "Location" header and ignore
 139                                         # the rest of the page we're on.
 140
 141                                         if ( $rt->getInterwiki() != "" ) {
 142                                                 $wgOut->redirect( $rt->getFullURL() ) ;
 143                                                 return;
 144                                         }
 145                                         if ( $rt->getNamespace() == Namespace::getSpecial() ) {
 146                                                 $wgOut->redirect( wfLocalUrl(
 147                                                   $rt->getPrefixedURL() ) );
 148                                                 return;
 149                                         }
 150                                         $rid = $rt->getArticleID();
 151                                         if ( 0 != $rid ) {
 152                                                 $sql = "SELECT cur_text,cur_timestamp,cur_user," .
 153                                                   "cur_counter,cur_touched FROM cur WHERE cur_id={$rid}";
 154                                                 $res = wfQuery( $sql, DB_READ, $fname );
 155
 156                                                 if ( 0 != wfNumRows( $res ) ) {
 157                                                         $this->mRedirectedFrom = $this->mTitle->getPrefixedText();
 158                                                         $this->mTitle = $rt;
 159                                                         $s = wfFetchObject( $res );
 160                                                 }
 161                                         }
 162                                 }
 163                         }
 164
 165                         $this->mContent = $s->cur_text;
 166                         $this->mUser = $s->cur_user;
 167                         $this->mCounter = $s->cur_counter;
 168                         $this->mTimestamp = $s->cur_timestamp;
 169                         $this->mTouched = $s->cur_touched;
 170                         $this->mTitle->mRestrictions = explode( ",", trim( $s->cur_restrictions ) );
 171                         $this->mTitle->mRestrictionsLoaded = true;
 172                         wfFreeResult( $res );
 173                 } else { # oldid set, retrieve historical version
 174                         $sql = "SELECT old_text,old_timestamp,old_user FROM old " .
 175                           "WHERE old_id={$oldid}";
 176                         $res = wfQuery( $sql, DB_READ, $fname );
 177                         if ( 0 == wfNumRows( $res ) ) { return; }
 178
 179                         $s = wfFetchObject( $res );
 180                         $this->mContent = $s->old_text;
 181                         $this->mUser = $s->old_user;
 182                         $this->mCounter = 0;
 183                         $this->mTimestamp = $s->old_timestamp;
 184                         wfFreeResult( $res );
 185                 }
 186                 $this->mContentLoaded = true;
 187         }
 188
 189         function getID() { return $this->mTitle->getArticleID(); }
 190
 191         function getCount()
 192         {
 193                 if ( -1 == $this->mCounter ) {
 194                         $id = $this->getID();
 195                         $this->mCounter = wfGetSQL( "cur", "cur_counter", "cur_id={$id}" );
 196                 }
 197                 return $this->mCounter;
 198         }
 199
 200         # Would the given text make this article a "good" article (i.e.,
 201         # suitable for including in the article count)?
 202
 203         function isCountable( $text )
 204         {
 205                 global $wgUseCommaCount, $wgMwRedir;
 206
 207                 if ( 0 != $this->mTitle->getNamespace() ) { return 0; }
 208                 if ( $wgMwRedir->matchStart( $text ) ) { return 0; }
 209                 $token = ($wgUseCommaCount ? "," : "[[" );
 210                 if ( false === strstr( $text, $token ) ) { return 0; }
 211                 return 1;
 212         }
 213
 214         # Load the field related to the last edit time of the article.
 215         # This isn't necessary for all uses, so it's only done if needed.
 216
 217         /* private */ function loadLastEdit()
 218         {
 219                 global $wgOut;
 220                 if ( -1 != $this->mUser ) return;
 221
 222                 $sql = "SELECT cur_user,cur_user_text,cur_timestamp," .
 223                   "cur_comment,cur_minor_edit FROM cur WHERE " .
 224                   "cur_id=" . $this->getID();
 225                 $res = wfQuery( $sql, DB_READ, "Article::loadLastEdit" );
 226
 227                 if ( wfNumRows( $res ) > 0 ) {
 228                         $s = wfFetchObject( $res );
 229                         $this->mUser = $s->cur_user;
 230                         $this->mUserText = $s->cur_user_text;
 231                         $this->mTimestamp = $s->cur_timestamp;
 232                         $this->mComment = $s->cur_comment;
 233                         $this->mMinorEdit = $s->cur_minor_edit;
 234                 }
 235         }
 236
 237         function getTimestamp()
 238         {
 239                 $this->loadLastEdit();
 240                 return $this->mTimestamp;
 241         }
 242
 243         function getUser()
 244         {
 245                 $this->loadLastEdit();
 246                 return $this->mUser;
 247         }
 248
 249         function getUserText()
 250         {
 251                 $this->loadLastEdit();
 252                 return $this->mUserText;
 253         }
 254
 255         function getComment()
 256         {
 257                 $this->loadLastEdit();
 258                 return $this->mComment;
 259         }
 260
 261         function getMinorEdit()
 262         {
 263                 $this->loadLastEdit();
 264                 return $this->mMinorEdit;
 265         }
 266
 267         # This is the default action of the script: just view the page of
 268         # the given title.
 269
 270         function view()
 271         {
 272                 global $wgUser, $wgOut, $wgLang;
 273                 global $oldid, $diff; # From query
 274                 global $wgLinkCache, $IP;
 275                 $fname = "Article::view";
 276                 wfProfileIn( $fname );
 277
 278                 $wgOut->setArticleFlag( true );
 279                 $wgOut->setRobotpolicy( "index,follow" );
 280
 281                 # If we got diff and oldid in the query, we want to see a
 282                 # diff page instead of the article.
 283
 284                 if ( isset( $diff ) ) {
 285                         include_once( "$IP/DifferenceEngine.php" );
 286                         $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
 287                         $de = new DifferenceEngine( $oldid, $diff );
 288                         $de->showDiffPage();
 289                         wfProfileOut( $fname );
 290                         return;
 291                 }
 292
 293                 if ( !isset( $oldid ) ) {
 294                         if( $this->checkTouched() ) {
 295                                 $wgOut->checkLastModified( $this->mTouched );
 296                                 $this->tryFileCache();
 297                         }
 298                 }
 299
 300                 $text = $this->getContent(); # May change mTitle
 301                 $wgOut->setPageTitle( $this->mTitle->getPrefixedText() );
 302                 $wgOut->setHTMLTitle( $this->mTitle->getPrefixedText() .
 303                   " - " . wfMsg( "wikititlesuffix" ) );
 304
 305                 # We're looking at an old revision
 306
 307                 if ( $oldid ) {
 308                         $this->setOldSubtitle();
 309                         $wgOut->setRobotpolicy( "noindex,follow" );
 310                 }
 311                 if ( "" != $this->mRedirectedFrom ) {
 312                         $sk = $wgUser->getSkin();
 313                         $redir = $sk->makeKnownLink( $this->mRedirectedFrom, "",
 314                           "redirect=no" );
 315                         $s = str_replace( "$1", $redir, wfMsg( "redirectedfrom" ) );
 316                         $wgOut->setSubtitle( $s );
 317                 }
 318                 $wgOut->checkLastModified( $this->mTouched );
 319                 $this->tryFileCache();
 320                 $wgLinkCache->preFill( $this->mTitle );
 321                 $wgOut->addWikiText( $text );
 322
 323                 $this->viewUpdates();
 324                 wfProfileOut( $fname );
 325         }
 326
 327         # This is the function that gets called for "action=edit".
 328
 329         function edit()
 330         {
 331                 global $wgOut, $wgUser;
 332                 global $wpTextbox1, $wpSummary, $wpSave, $wpPreview;
 333                 global $wpMinoredit, $wpEdittime, $wpTextbox2;
 334
 335                 $fields = array( "wpTextbox1", "wpSummary", "wpTextbox2" );
 336                 wfCleanFormFields( $fields );
 337
 338                 if ( ! $this->mTitle->userCanEdit() ) {
 339                         $wgOut->readOnlyPage( $this->getContent(), true );
 340                         return;
 341                 }
 342                 if ( $wgUser->isBlocked() ) {
 343                         $this->blockedIPpage();
 344                         return;
 345                 }
 346                 if ( wfReadOnly() ) {
 347                         if( isset( $wpSave ) or isset( $wpPreview ) ) {
 348                                 $this->editForm( "preview" );
 349                         } else {
 350                                 $wgOut->readOnlyPage( $this->getContent() );
 351                         }
 352                         return;
 353                 }
 354                 if ( $_SERVER['REQUEST_METHOD'] != "POST" ) unset( $wpSave );
 355                 if ( isset( $wpSave ) ) {
 356                         $this->editForm( "save" );
 357                 } else if ( isset( $wpPreview ) ) {
 358                         $this->editForm( "preview" );
 359                 } else { # First time through
 360                         $this->editForm( "initial" );
 361                 }
 362         }
 363
 364         # Since there is only one text field on the edit form,
 365         # pressing <enter> will cause the form to be submitted, but
 366         # the submit button value won't appear in the query, so we
 367         # Fake it here before going back to edit().  This is kind of
 368         # ugly, but it helps some old URLs to still work.
 369
 370         function submit()
 371         {
 372                 global $wpSave, $wpPreview;
 373                 if ( ! isset( $wpPreview ) ) { $wpSave = 1; }
 374
 375                 $this->edit();
 376         }
 377
 378         # The edit form is self-submitting, so that when things like
 379         # preview and edit conflicts occur, we get the same form back
 380         # with the extra stuff added.  Only when the final submission
 381         # is made and all is well do we actually save and redirect to
 382         # the newly-edited page.
 383
 384         function editForm( $formtype )
 385         {
 386                 global $wgOut, $wgUser;
 387                 global $wpTextbox1, $wpSummary, $wpWatchthis;
 388                 global $wpSave, $wpPreview;
 389                 global $wpMinoredit, $wpEdittime, $wpTextbox2, $wpSection;
 390                 global $oldid, $redirect, $section;
 391                 global $wgLang;
 392
 393                 if(isset($wpSection)) { $section=$wpSection; } else { $wpSection=$section; }
 394
 395                 $sk = $wgUser->getSkin();
 396                 $isConflict = false;
 397                 $wpTextbox1 = rtrim ( $wpTextbox1 ) ; # To avoid text getting longer on each preview
 398
 399                 if(!$this->mTitle->getArticleID()) { # new article
 400
 401                         $wgOut->addWikiText(wfmsg("newarticletext"));
 402
 403                 }
 404
 405                 # Attempt submission here.  This will check for edit conflicts,
 406                 # and redundantly check for locked database, blocked IPs, etc.
 407                 # that edit() already checked just in case someone tries to sneak
 408                 # in the back door with a hand-edited submission URL.
 409
 410                 if ( "save" == $formtype ) {
 411                         if ( $wgUser->isBlocked() ) {
 412                                 $this->blockedIPpage();
 413                                 return;
 414                         }
 415                         if ( wfReadOnly() ) {
 416                                 $wgOut->readOnlyPage();
 417                                 return;
 418                         }
 419                         # If article is new, insert it.
 420
 421                         $aid = $this->mTitle->getArticleID();
 422                         if ( 0 == $aid ) {
 423                                 # we need to strip Windoze linebreaks because some browsers
 424                                 # append them and the string comparison fails
 425                                 if ( ( "" == $wpTextbox1 ) ||
 426                                   ( wfMsg( "newarticletext" ) == rtrim( preg_replace("/\r/","",$wpTextbox1) ) ) ) {
 427                                         $wgOut->redirect(  wfLocalUrl(
 428                                           $this->mTitle->getPrefixedURL() ) );
 429                                         return;
 430                                 }
 431                                 $this->mCountAdjustment = $this->isCountable( $wpTextbox1 );
 432                                 $this->insertNewArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis );
 433                                 return;
 434                         }
 435                         # Article exists. Check for edit conflict.
 436                         # Don't check for conflict when appending a comment - this should always work
 437
 438                         $this->clear(); # Force reload of dates, etc.
 439                         if ( $section!="new" && ( $this->getTimestamp() != $wpEdittime ) ) {
 440                                 $isConflict = true;
 441                         }
 442                         $u = $wgUser->getID();
 443
 444                         # Supress edit conflict with self
 445
 446                         if ( ( 0 != $u ) && ( $this->getUser() == $u ) ) {
 447                                 $isConflict = false;
 448                         } else {
 449                                 # switch from section editing to normal editing in edit conflict
 450                                 if($isConflict) {
 451                                         $section="";$wpSection="";
 452                                 }
 453
 454                         }
 455                         if ( ! $isConflict ) {
 456                                 # All's well: update the article here
 457                                 if($this->updateArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis, $wpSection ))
 458                                         return;
 459                                 else
 460                                         $isConflict = true;
 461                         }
 462                 }
 463                 # First time through: get contents, set time for conflict
 464                 # checking, etc.
 465
 466                 if ( "initial" == $formtype ) {
 467                         $wpEdittime = $this->getTimestamp();
 468                         $wpTextbox1 = $this->getContent(true);
 469                         $wpSummary = "";
 470                 }
 471                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 472                 $wgOut->setArticleFlag( false );
 473
 474                 if ( $isConflict ) {
 475                         $s = str_replace( "$1", $this->mTitle->getPrefixedText(),
 476                           wfMsg( "editconflict" ) );
 477                         $wgOut->setPageTitle( $s );
 478                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 479
 480                         $wpTextbox2 = $wpTextbox1;
 481                         $wpTextbox1 = $this->getContent(true);
 482                         $wpEdittime = $this->getTimestamp();
 483                 } else {
 484                         $s = str_replace( "$1", $this->mTitle->getPrefixedText(),
 485                           wfMsg( "editing" ) );
 486
 487                         if($section!="") {
 488                                 if($section=="new") {
 489                                         $s.=wfMsg("commentedit");
 490                                 } else {
 491                                         $s.=wfMsg("sectionedit");
 492                                 }
 493                         }
 494                         $wgOut->setPageTitle( $s );
 495                         if ( $oldid ) {
 496                                 $this->setOldSubtitle();
 497                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 498                         }
 499                 }
 500
 501                 if( wfReadOnly() ) {
 502                         $wgOut->addHTML( "<strong>" .
 503                                 wfMsg( "readonlywarning" ) .
 504                                 "</strong>" );
 505                 }
 506                 if( $this->mTitle->isProtected() ) {
 507                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 508                           "</strong><br />\n" );
 509                 }
 510
 511                 $kblength = (int)(strlen( $wpTextbox1 ) / 1024);
 512                 if( $kblength > 29 ) {
 513                         $wgOut->addHTML( "<strong>" .
 514                                 str_replace( '$1', $kblength , wfMsg( "longpagewarning" ) )
 515                                 . "</strong>" );
 516                 }
 517
 518                 $rows = $wgUser->getOption( "rows" );
 519                 $cols = $wgUser->getOption( "cols" );
 520
 521                 $ew = $wgUser->getOption( "editwidth" );
 522                 if ( $ew ) $ew = " style=\"width:100%\"";
 523                 else $ew = "" ;
 524
 525                 $q = "action=submit";
 526                 if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 527                 $action = wfEscapeHTML( wfLocalUrl( $this->mTitle->getPrefixedURL(), $q ) );
 528
 529                 $summary = wfMsg( "summary" );
 530                 $subject = wfMsg("subject");
 531                 $minor = wfMsg( "minoredit" );
 532                 $watchthis = wfMsg ("watchthis");
 533                 $save = wfMsg( "savearticle" );
 534                 $prev = wfMsg( "showpreview" );
 535
 536                 $cancel = $sk->makeKnownLink( $this->mTitle->getPrefixedURL(),
 537                   wfMsg( "cancel" ) );
 538                 $edithelp = $sk->makeKnownLink( wfMsg( "edithelppage" ),
 539                   wfMsg( "edithelp" ) );
 540                 $copywarn = str_replace( "$1", $sk->makeKnownLink(
 541                   wfMsg( "copyrightpage" ) ), wfMsg( "copyrightwarning" ) );
 542
 543                 $wpTextbox1 = wfEscapeHTML( $wpTextbox1 );
 544                 $wpTextbox2 = wfEscapeHTML( $wpTextbox2 );
 545                 $wpSummary = wfEscapeHTML( $wpSummary );
 546
 547                 // activate checkboxes if user wants them to be always active
 548                 if (!$wpPreview && $wgUser->getOption("watchdefault")) $wpWatchthis=1;
 549                 if (!$wpPreview && $wgUser->getOption("minordefault")) $wpMinoredit=1;
 550
 551                 // activate checkbox also if user is already watching the page,
 552                 // require wpWatchthis to be unset so that second condition is not
 553                 // checked unnecessarily
 554                 if (!$wpWatchthis && !$wpPreview && $this->mTitle->userIsWatching()) $wpWatchthis=1;
 555
 556                 if ( 0 != $wgUser->getID() ) {
 557                         $checkboxhtml=
 558                         "<input tabindex=3 type=checkbox value=1 name='wpMinoredit'".($wpMinoredit?" checked":"").">{$minor}".
 559                         "<input tabindex=4 type=checkbox name='wpWatchthis'".($wpWatchthis?" checked":"").">{$watchthis}<br>";
 560
 561                 } else {
 562                         $checkboxhtml="";
 563                 }
 564
 565
 566                 if ( "preview" == $formtype) {
 567
 568                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><large><center><font color=\"#cc0000\">" .
 569                         wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></large><P>\n";
 570                         if ( $isConflict ) {
 571                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 572                                   "</h2>\n";
 573                         }
 574                         $previewtext = wfUnescapeHTML( $wpTextbox1 );
 575
 576                         if($wgUser->getOption("previewontop")) {
 577                                 $wgOut->addHTML($previewhead);
 578                                 $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) ."\n\n");
 579                         }
 580                         $wgOut->addHTML( "<br clear=\"all\" />\n" );
 581                 }
 582
 583                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 584                 # Otherwise, show a summary field at the bottom
 585                 if($section=="new") {
 586
 587                         $commentsubject="{$subject}: <input tabindex=1 type=text value=\"{$wpSummary}\" name=\"wpSummary\" maxlength=200 size=60><br>";
 588                 } else {
 589
 590                         $editsummary="{$summary}: <input tabindex=3 type=text value=\"{$wpSummary}\" name=\"wpSummary\" maxlength=200 size=60><br>";
 591                 }
 592
 593                 $wgOut->addHTML( "
 594 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 595 enctype=\"application/x-www-form-urlencoded\">
 596 {$commentsubject}
 597 <textarea tabindex=2 name=\"wpTextbox1\" rows={$rows}
 598 cols={$cols}{$ew} wrap=\"virtual\">" .
 599 $wgLang->recodeForEdit( $wpTextbox1 ) .
 600 "
 601 </textarea>
 602 <br>{$editsummary}
 603 {$checkboxhtml}
 604 <input tabindex=5 type=submit value=\"{$save}\" name=\"wpSave\">
 605 <input tabindex=6 type=submit value=\"{$prev}\" name=\"wpPreview\">
 606 <em>{$cancel}</em> | <em>{$edithelp}</em>
 607 <br><br>{$copywarn}
 608 <input type=hidden value=\"{$section}\" name=\"wpSection\">
 609 <input type=hidden value=\"{$wpEdittime}\" name=\"wpEdittime\">\n" );
 610
 611                 if ( $isConflict ) {
 612                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 613                         DifferenceEngine::showDiff( $wpTextbox2, $wpTextbox1,
 614                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 615
 616                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 617 <textarea tabindex=6 name=\"wpTextbox2\" rows={$rows} cols={$cols} wrap=virtual>"
 618 . $wgLang->recodeForEdit( $wpTextbox2 ) .
 619 "
 620 </textarea>" );
 621                 }
 622                 $wgOut->addHTML( "</form>\n" );
 623                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 624                         $wgOut->addHTML($previewhead);
 625                         $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) );
 626                 }
 627         }
 628
 629         # Theoretically we could defer these whole insert and update
 630         # functions for after display, but that's taking a big leap
 631         # of faith, and we want to be able to report database
 632         # errors at some point.
 633
 634         /* private */ function insertNewArticle( $text, $summary, $isminor, $watchthis )
 635         {
 636                 global $wgOut, $wgUser, $wgLinkCache, $wgMwRedir;
 637                 global $wgEnablePersistentLC;
 638
 639                 $fname = "Article::insertNewArticle";
 640
 641                 $ns = $this->mTitle->getNamespace();
 642                 $ttl = $this->mTitle->getDBkey();
 643                 $text = $this->preSaveTransform( $text );
 644                 if ( $wgMwRedir->matchStart( $text ) ) { $redir = 1; }
 645                 else { $redir = 0; }
 646
 647                 $now = wfTimestampNow();
 648                 $won = wfInvertTimestamp( $now );
 649                 wfSeedRandom();
 650                 $rand = number_format( mt_rand() / mt_getrandmax(), 12, ".", "" );
 651                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 652                   "cur_comment,cur_user,cur_timestamp,cur_minor_edit,cur_counter," .
 653                   "cur_restrictions,cur_user_text,cur_is_redirect," .
 654                   "cur_is_new,cur_random,cur_touched,inverse_timestamp) VALUES ({$ns},'" . wfStrencode( $ttl ) . "', '" .
 655                   wfStrencode( $text ) . "', '" .
 656                   wfStrencode( $summary ) . "', '" .
 657                   $wgUser->getID() . "', '{$now}', " .
 658                   ( $isminor ? 1 : 0 ) . ", 0, '', '" .
 659                   wfStrencode( $wgUser->getName() ) . "', $redir, 1, $rand, '{$now}', '{$won}')";
 660                 $res = wfQuery( $sql, DB_WRITE, $fname );
 661
 662                 $newid = wfInsertId();
 663                 $this->mTitle->resetArticleID( $newid );
 664
 665                 if ( $wgEnablePersistentLC ) {
 666                         // Purge related entries in links cache on new page, to heal broken links
 667                         $ptitle = wfStrencode( $ttl );
 668                         wfQuery("DELETE linkscc FROM linkscc,brokenlinks ".
 669                                 "WHERE lcc_pageid=bl_from AND bl_to='{$ptitle}'", DB_WRITE);
 670                 }
 671
 672                 $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 673                   "rc_namespace,rc_title,rc_new,rc_minor,rc_cur_id,rc_user," .
 674                   "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid,rc_bot) VALUES (" .
 675                   "'{$now}','{$now}',{$ns},'" . wfStrencode( $ttl ) . "',1," .
 676                   ( $isminor ? 1 : 0 ) . ",{$newid}," . $wgUser->getID() . ",'" .
 677                   wfStrencode( $wgUser->getName() ) . "','" .
 678                   wfStrencode( $summary ) . "',0,0," .
 679                   ( $wgUser->isBot() ? 1 : 0 ) . ")";
 680                 wfQuery( $sql, DB_WRITE, $fname );
 681                 if ($watchthis) {
 682                         if(!$this->mTitle->userIsWatching()) $this->watch();
 683                 } else {
 684                         if ( $this->mTitle->userIsWatching() ) {
 685                                 $this->unwatch();
 686                         }
 687                 }
 688
 689                 # The talk page isn't in the regular link tables, so we need to update manually:
 690                 $talkns = $ns ^ 1; # talk -> normal; normal -> talk
 691                 $sql = "UPDATE cur set cur_touched='$now' WHERE cur_namespace=$talkns AND cur_title='" . wfStrencode( $ttl ) . "'";
 692                 wfQuery( $sql );
 693
 694                 $this->showArticle( $text, wfMsg( "newarticle" ) );
 695         }
 696
 697         function updateArticle( $text, $summary, $minor, $watchthis, $section = "")
 698         {
 699                 global $wgOut, $wgUser, $wgLinkCache;
 700                 global $wgDBtransactions, $wgMwRedir;
 701                 $fname = "Article::updateArticle";
 702
 703                 $this->loadLastEdit();
 704
 705                 // insert updated section into old text if we have only edited part
 706                 // of the article
 707                 if ($section != "") {
 708                         $oldtext=$this->getContent();
 709                         if($section=="new") {
 710                                 if($summary) $subject="== {$summary} ==\n\n";
 711                                 $text=$oldtext."\n\n".$subject.$text;
 712                         } else {
 713                                 $secs=preg_split("/(^=+.*?=+|^<h[1-6].*?>.*?<\/h[1-6].*?>)/mi",
 714                                   $oldtext,-1,PREG_SPLIT_DELIM_CAPTURE);
 715                                 $secs[$section*2]=$text."\n\n"; // replace with edited
 716                                 if($section) { $secs[$section*2-1]=""; } // erase old headline
 717                                 $text=join("",$secs);
 718                         }
 719                 }
 720                 if ( $this->mMinorEdit ) { $me1 = 1; } else { $me1 = 0; }
 721                 if ( $minor ) { $me2 = 1; } else { $me2 = 0; }
 722                 if ( preg_match( "/^((" . $wgMwRedir->getBaseRegex() . ")[^\\n]+)/i", $text, $m ) ) {
 723                         $redir = 1;
 724                         $text = $m[1] . "\n"; # Remove all content but redirect
 725                 }
 726                 else { $redir = 0; }
 727
 728                 $text = $this->preSaveTransform( $text );
 729
 730                 # Update article, but only if changed.
 731
 732                 if( $wgDBtransactions ) {
 733                         $sql = "BEGIN";
 734                         wfQuery( $sql, DB_WRITE );
 735                 }
 736                 $oldtext = $this->getContent( true );
 737
 738                 if ( 0 != strcmp( $text, $oldtext ) ) {
 739                         $this->mCountAdjustment = $this->isCountable( $text )
 740                           - $this->isCountable( $oldtext );
 741
 742                         $now = wfTimestampNow();
 743                         $won = wfInvertTimestamp( $now );
 744                         $sql = "UPDATE cur SET cur_text='" . wfStrencode( $text ) .
 745                           "',cur_comment='" .  wfStrencode( $summary ) .
 746                           "',cur_minor_edit={$me2}, cur_user=" . $wgUser->getID() .
 747                           ",cur_timestamp='{$now}',cur_user_text='" .
 748                           wfStrencode( $wgUser->getName() ) .
 749                           "',cur_is_redirect={$redir}, cur_is_new=0, cur_touched='{$now}', inverse_timestamp='{$won}' " .
 750                           "WHERE cur_id=" . $this->getID() .
 751                           " AND cur_timestamp='" . $this->getTimestamp() . "'";
 752                         $res = wfQuery( $sql, DB_WRITE, $fname );
 753
 754                         if( wfAffectedRows() == 0 ) {
 755                                 /* Belated edit conflict! Run away!! */
 756                                 return false;
 757                         }
 758
 759                         $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 760                           "old_comment,old_user,old_user_text,old_timestamp," .
 761                           "old_minor_edit,inverse_timestamp) VALUES (" .
 762                           $this->mTitle->getNamespace() . ", '" .
 763                           wfStrencode( $this->mTitle->getDBkey() ) . "', '" .
 764                           wfStrencode( $oldtext ) . "', '" .
 765                           wfStrencode( $this->getComment() ) . "', " .
 766                           $this->getUser() . ", '" .
 767                           wfStrencode( $this->getUserText() ) . "', '" .
 768                           $this->getTimestamp() . "', " . $me1 . ", '" .
 769                           wfInvertTimestamp( $this->getTimestamp() ) . "')";
 770                         $res = wfQuery( $sql, DB_WRITE, $fname );
 771                         $oldid = wfInsertID( $res );
 772
 773                         $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 774                           "rc_namespace,rc_title,rc_new,rc_minor,rc_bot,rc_cur_id,rc_user," .
 775                           "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid) VALUES (" .
 776                           "'{$now}','{$now}'," . $this->mTitle->getNamespace() . ",'" .
 777                           wfStrencode( $this->mTitle->getDBkey() ) . "',0,{$me2}," .
 778                           ( $wgUser->isBot() ? 1 : 0 ) . "," .
 779                           $this->getID() . "," . $wgUser->getID() . ",'" .
 780                           wfStrencode( $wgUser->getName() ) . "','" .
 781                           wfStrencode( $summary ) . "',0,{$oldid})";
 782                         wfQuery( $sql, DB_WRITE, $fname );
 783
 784                         $sql = "UPDATE recentchanges SET rc_this_oldid={$oldid} " .
 785                           "WHERE rc_namespace=" . $this->mTitle->getNamespace() . " AND " .
 786                           "rc_title='" . wfStrencode( $this->mTitle->getDBkey() ) . "' AND " .
 787                           "rc_timestamp='" . $this->getTimestamp() . "'";
 788                         wfQuery( $sql, DB_WRITE, $fname );
 789
 790                         $sql = "UPDATE recentchanges SET rc_cur_time='{$now}' " .
 791                           "WHERE rc_cur_id=" . $this->getID();
 792                         wfQuery( $sql, DB_WRITE, $fname );
 793
 794                         if ( $wgEnablePersistentLC ) {
 795
 796                                 // Purge link cache for this page
 797                                 $pageid=$this->getID();
 798                                 wfQuery("DELETE FROM linkscc WHERE lcc_pageid='{$pageid}'", DB_WRITE);
 799
 800                                 // This next query just makes sure stub colored links to this page
 801                                 // are updated correctly (I think). If performance is more important
 802                                 // than real-time updating of stub links, we really should skip
 803                                 // this query.
 804                                 wfQuery("DELETE linkscc FROM linkscc,links ".
 805                                         "WHERE lcc_title=links.l_from AND l_to={$pageid}", DB_WRITE);
 806                         }
 807
 808                 }
 809                 if( $wgDBtransactions ) {
 810                         $sql = "COMMIT";
 811                         wfQuery( $sql, DB_WRITE );
 812                 }
 813
 814                 if ($watchthis) {
 815                         if (!$this->mTitle->userIsWatching()) $this->watch();
 816                 } else {
 817                         if ( $this->mTitle->userIsWatching() ) {
 818                                 $this->unwatch();
 819                         }
 820                 }
 821
 822                 $this->showArticle( $text, wfMsg( "updated" ) );
 823                 return true;
 824         }
 825
 826         # After we've either updated or inserted the article, update
 827         # the link tables and redirect to the new page.
 828
 829         function showArticle( $text, $subtitle )
 830         {
 831                 global $wgOut, $wgUser, $wgLinkCache, $wgUseBetterLinksUpdate;
 832                 global $wgMwRedir;
 833
 834                 $wgLinkCache = new LinkCache();
 835
 836                 # Get old version of link table to allow incremental link updates
 837                 if ( $wgUseBetterLinksUpdate ) {
 838                         $wgLinkCache->preFill( $this->mTitle );
 839                         $wgLinkCache->clear();
 840                 }
 841
 842                 # Now update the link cache by parsing the text
 843                 $wgOut = new OutputPage();
 844                 $wgOut->addWikiText( $text );
 845
 846                 $this->editUpdates( $text );
 847                 if( $wgMwRedir->matchStart( $text ) )
 848                         $r = "redirect=no";
 849                 else
 850                         $r = "";
 851                 $wgOut->redirect( wfLocalUrl( $this->mTitle->getPrefixedURL(), $r ) );
 852         }
 853
 854         # Add this page to my watchlist
 855
 856         function watch( $add = true )
 857         {
 858                 global $wgUser, $wgOut, $wgLang;
 859                 global $wgDeferredUpdateList;
 860
 861                 if ( 0 == $wgUser->getID() ) {
 862                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 863                         return;
 864                 }
 865                 if ( wfReadOnly() ) {
 866                         $wgOut->readOnlyPage();
 867                         return;
 868                 }
 869                 if( $add )
 870                         $wgUser->addWatch( $this->mTitle );
 871                 else
 872                         $wgUser->removeWatch( $this->mTitle );
 873
 874                 $wgOut->setPagetitle( wfMsg( $add ? "addedwatch" : "removedwatch" ) );
 875                 $wgOut->setRobotpolicy( "noindex,follow" );
 876
 877                 $sk = $wgUser->getSkin() ;
 878                 $link = $sk->makeKnownLink ( $this->mTitle->getPrefixedText() ) ;
 879
 880                 if($add)
 881                         $text = wfMsg( "addedwatchtext", $link );
 882                 else
 883                         $text = wfMsg( "removedwatchtext", $link );
 884                 $wgOut->addHTML( $text );
 885
 886                 $up = new UserUpdate();
 887                 array_push( $wgDeferredUpdateList, $up );
 888
 889                 $wgOut->returnToMain( false );
 890         }
 891
 892         function unwatch()
 893         {
 894                 $this->watch( false );
 895         }
 896
 897         # This shares a lot of issues (and code) with Recent Changes
 898
 899         function history()
 900         {
 901                 global $wgUser, $wgOut, $wgLang, $offset, $limit;
 902
 903                 # If page hasn't changed, client can cache this
 904
 905                 $wgOut->checkLastModified( $this->getTimestamp() );
 906                 $fname = "Article::history";
 907                 wfProfileIn( $fname );
 908
 909                 $wgOut->setPageTitle( $this->mTitle->getPRefixedText() );
 910                 $wgOut->setSubtitle( wfMsg( "revhistory" ) );
 911                 $wgOut->setArticleFlag( false );
 912                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 913
 914                 if( $this->mTitle->getArticleID() == 0 ) {
 915                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 916                         wfProfileOut( $fname );
 917                         return;
 918                 }
 919
 920                 $offset = (int)$offset;
 921                 $limit = (int)$limit;
 922                 if( $limit == 0 ) $limit = 50;
 923                 $namespace = $this->mTitle->getNamespace();
 924                 $title = $this->mTitle->getText();
 925                 $sql = "SELECT old_id,old_user," .
 926                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
 927                   "FROM old USE INDEX (name_title_timestamp) " .
 928                   "WHERE old_namespace={$namespace} AND " .
 929                   "old_title='" . wfStrencode( $this->mTitle->getDBkey() ) . "' " .
 930                   "ORDER BY inverse_timestamp LIMIT $offset, $limit";
 931                 $res = wfQuery( $sql, DB_READ, "Article::history" );
 932
 933                 $revs = wfNumRows( $res );
 934                 if( $this->mTitle->getArticleID() == 0 ) {
 935                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 936                         wfProfileOut( $fname );
 937                         return;
 938                 }
 939
 940                 $sk = $wgUser->getSkin();
 941                 $numbar = wfViewPrevNext(
 942                         $offset, $limit,
 943                         $this->mTitle->getPrefixedText(),
 944                         "action=history" );
 945                 $s = $numbar;
 946                 $s .= $sk->beginHistoryList();
 947
 948                 if($offset == 0 )
 949                 $s .= $sk->historyLine( $this->getTimestamp(), $this->getUser(),
 950                   $this->getUserText(), $namespace,
 951                   $title, 0, $this->getComment(),
 952                   ( $this->getMinorEdit() > 0 ) );
 953
 954                 $revs = wfNumRows( $res );
 955                 while ( $line = wfFetchObject( $res ) ) {
 956                         $s .= $sk->historyLine( $line->old_timestamp, $line->old_user,
 957                           $line->old_user_text, $namespace,
 958                           $title, $line->old_id,
 959                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
 960                 }
 961                 $s .= $sk->endHistoryList();
 962                 $s .= $numbar;
 963                 $wgOut->addHTML( $s );
 964                 wfProfileOut( $fname );
 965         }
 966
 967         function protect( $limit = "sysop" )
 968         {
 969                 global $wgUser, $wgOut;
 970
 971                 if ( ! $wgUser->isSysop() ) {
 972                         $wgOut->sysopRequired();
 973                         return;
 974                 }
 975                 if ( wfReadOnly() ) {
 976                         $wgOut->readOnlyPage();
 977                         return;
 978                 }
 979                 $id = $this->mTitle->getArticleID();
 980                 if ( 0 == $id ) {
 981                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
 982                         return;
 983                 }
 984         $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
 985                         "cur_restrictions='{$limit}' WHERE cur_id={$id}";
 986                 wfQuery( $sql, DB_WRITE, "Article::protect" );
 987
 988                 $log = new LogPage( wfMsg( "protectlogpage" ), wfMsg( "protectlogtext" ) );
 989                 if ( $limit === "" ) {
 990                         $log->addEntry( wfMsg( "unprotectedarticle", $wgTitle->getPrefixedText() ), "" );
 991                 } else {
 992                         $log->addEntry( wfMsg( "protectedarticle", $wgTitle->getPrefixedText() ), "" );
 993                 }
 994                 $wgOut->redirect( wfLocalUrl( $this->mTitle->getPrefixedURL() ) );
 995         }
 996
 997         function unprotect()
 998         {
 999                 return $this->protect( "" );
1000         }
1001
1002         function delete()
1003         {
1004                 global $wgUser, $wgOut;
1005                 global $wpConfirm, $wpReason, $image, $oldimage;
1006
1007                 # This code desperately needs to be totally rewritten
1008
1009                 if ( ( ! $wgUser->isSysop() ) ) {
1010                         $wgOut->sysopRequired();
1011                         return;
1012                 }
1013                 if ( wfReadOnly() ) {
1014                         $wgOut->readOnlyPage();
1015                         return;
1016                 }
1017
1018                 # Better double-check that it hasn't been deleted yet!
1019                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
1020                 if ( ( "" == trim( $this->mTitle->getText() ) )
1021                   or ( $this->mTitle->getArticleId() == 0 ) ) {
1022                         $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1023                         return;
1024                 }
1025
1026                 # determine whether this page has earlier revisions
1027                 # and insert a warning if it does
1028                 # we select the text because it might be useful below
1029                 $sql="SELECT old_text FROM old WHERE old_namespace=0 and old_title='" . wfStrencode($this->mTitle->getPrefixedDBkey())."' ORDER BY inverse_timestamp LIMIT 1";
1030                 $res=wfQuery($sql, DB_READ, $fname);
1031                 if( ($old=wfFetchObject($res)) && !$wpConfirm ) {
1032                         $skin=$wgUser->getSkin();
1033                         $wgOut->addHTML("<B>".wfMsg("historywarning"));
1034                         $wgOut->addHTML( $skin->historyLink() ."</B><P>");
1035                 }
1036
1037                 $sql="SELECT cur_text FROM cur WHERE cur_namespace=0 and cur_title='" . wfStrencode($this->mTitle->getPrefixedDBkey())."'";
1038                 $res=wfQuery($sql, DB_READ, $fname);
1039                 if( ($s=wfFetchObject($res))) {
1040
1041                         # if this is a mini-text, we can paste part of it into the deletion reason
1042
1043                         #if this is empty, an earlier revision may contain "useful" text
1044                         if($s->cur_text!="") {
1045                                 $text=$s->cur_text;
1046                         } else {
1047                                 if($old) {
1048                                         $text=$old->old_text;
1049                                         $blanked=1;
1050                                 }
1051
1052                         }
1053
1054                         $length=strlen($text);
1055
1056                         # this should not happen, since it is not possible to store an empty, new
1057                         # page. Let's insert a standard text in case it does, though
1058                         if($length==0 && !$wpReason) { $wpReason=wfmsg("exblank");}
1059
1060
1061                         if($length < 500 && !$wpReason) {
1062
1063                                 # comment field=255, let's grep the first 150 to have some user
1064                                 # space left
1065                                 $text=substr($text,0,150);
1066                                 # let's strip out newlines and HTML tags
1067                                 $text=preg_replace("/\"/","'",$text);
1068                                 $text=preg_replace("/\</","&lt;",$text);
1069                                 $text=preg_replace("/\>/","&gt;",$text);
1070                                 $text=preg_replace("/[\n\r]/","",$text);
1071                                 if(!$blanked) {
1072                                         $wpReason=wfMsg("excontent"). " '".$text;
1073                                 } else {
1074                                         $wpReason=wfMsg("exbeforeblank") . " '".$text;
1075                                 }
1076                                 if($length>150) { $wpReason .= "..."; } # we've only pasted part of the text
1077                                 $wpReason.="'";
1078                         }
1079                 }
1080
1081                 return $this->confirmDelete();
1082         }
1083
1084         function confirmDelete( $par = "" )
1085         {
1086                 global $wgOut;
1087
1088                 $sub = htmlspecialchars( $this->mTitle->getPrefixedText() );
1089                 $wgOut->setSubtitle( wfMsg( "deletesub", $sub ) );
1090                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1091                 $wgOut->addWikiText( wfMsg( "confirmdeletetext" ) );
1092
1093                 $t = $this->mTitle->getPrefixedURL();
1094
1095                 $formaction = wfEscapeHTML( wfLocalUrl( $t, "action=delete" . $par ) );
1096                 $confirm = wfMsg( "confirm" );
1097                 $check = wfMsg( "confirmcheck" );
1098                 $delcom = wfMsg( "deletecomment" );
1099
1100                 $wgOut->addHTML( "
1101 <form id=\"deleteconfirm\" method=\"post\" action=\"{$formaction}\">
1102 <table border=0><tr><td align=right>
1103 {$delcom}:</td><td align=left>
1104 <input type=text size=60 name=\"wpReason\" value=\"{$wpReason}\">
1105 </td></tr><tr><td>&nbsp;</td></tr>
1106 <tr><td align=right>
1107 <input type=checkbox name=\"wpConfirm\" value='1' id=\"wpConfirm\">
1108 </td><td><label for=\"wpConfirm\">{$check}</label></td>
1109 </tr><tr><td>&nbsp;</td><td>
1110 <input type=submit name=\"wpConfirmB\" value=\"{$confirm}\">
1111 </td></tr></table></form>\n" );
1112
1113                 $wgOut->returnToMain( false );
1114         }
1115
1116         function doDelete()
1117         {
1118                 global $wgOut, $wgUser, $wgLang;
1119                 global $wpReason;
1120                 $fname = "Article::doDelete";
1121
1122                 $this->doDeleteArticle( $this->mTitle );
1123                 $deleted = $this->mTitle->getPrefixedText();
1124
1125                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1126                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1127
1128                 $sk = $wgUser->getSkin();
1129                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
1130                   Namespace::getWikipedia() ) .
1131                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
1132
1133                 $text = str_replace( "$1" , $deleted, wfMsg( "deletedtext" ) );
1134                 $text = str_replace( "$2", $loglink, $text );
1135
1136                 $wgOut->addHTML( "<p>" . $text );
1137                 $wgOut->returnToMain( false );
1138         }
1139
1140         function doDeleteArticle( $title )
1141         {
1142                 global $wgUser, $wgOut, $wgLang, $wpReason, $wgDeferredUpdateList;
1143
1144                 $fname = "Article::doDeleteArticle";
1145                 $ns = $title->getNamespace();
1146                 $t = wfStrencode( $title->getDBkey() );
1147                 $id = $title->getArticleID();
1148
1149                 if ( "" == $t ) {
1150                         $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1151                         return;
1152                 }
1153
1154                 $u = new SiteStatsUpdate( 0, 1, -$this->isCountable( $this->getContent( true ) ) );
1155                 array_push( $wgDeferredUpdateList, $u );
1156
1157                 # Move article and history to the "archive" table
1158                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1159                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1160                   "ar_flags) SELECT cur_namespace,cur_title,cur_text,cur_comment," .
1161                   "cur_user,cur_user_text,cur_timestamp,cur_minor_edit,0 FROM cur " .
1162                   "WHERE cur_namespace={$ns} AND cur_title='{$t}'";
1163                 wfQuery( $sql, DB_WRITE, $fname );
1164
1165                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1166                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1167                   "ar_flags) SELECT old_namespace,old_title,old_text,old_comment," .
1168                   "old_user,old_user_text,old_timestamp,old_minor_edit,old_flags " .
1169                   "FROM old WHERE old_namespace={$ns} AND old_title='{$t}'";
1170                 wfQuery( $sql, DB_WRITE, $fname );
1171
1172                 # Now that it's safely backed up, delete it
1173
1174                 $sql = "DELETE FROM cur WHERE cur_namespace={$ns} AND " .
1175                   "cur_title='{$t}'";
1176                 wfQuery( $sql, DB_WRITE, $fname );
1177
1178                 $sql = "DELETE FROM old WHERE old_namespace={$ns} AND " .
1179                   "old_title='{$t}'";
1180                 wfQuery( $sql, DB_WRITE, $fname );
1181
1182                 $sql = "DELETE FROM recentchanges WHERE rc_namespace={$ns} AND " .
1183                   "rc_title='{$t}'";
1184                 wfQuery( $sql, DB_WRITE, $fname );
1185
1186                 # Finally, clean up the link tables
1187
1188                 if ( 0 != $id ) {
1189
1190                         $t = wfStrencode( $title->getPrefixedDBkey() );
1191
1192                         if ( $wgEnablePersistentLC ) {
1193                                 // Purge related entries in links cache on delete,
1194                                 wfQuery("DELETE linkscc FROM linkscc,links ".
1195                                         "WHERE lcc_title=links.l_from AND l_to={$id}", DB_WRITE);
1196                                 wfQuery("DELETE FROM linkscc WHERE lcc_title='{$t}'", DB_WRITE);
1197                         }
1198
1199                         $sql = "SELECT l_from FROM links WHERE l_to={$id}";
1200                         $res = wfQuery( $sql, DB_READ, $fname );
1201
1202                         $sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
1203                         $now = wfTimestampNow();
1204                         $sql2 = "UPDATE cur SET cur_touched='{$now}' WHERE cur_id IN (";
1205                         $first = true;
1206
1207                         while ( $s = wfFetchObject( $res ) ) {
1208                                 $nt = Title::newFromDBkey( $s->l_from );
1209                                 $lid = $nt->getArticleID();
1210
1211                                 if ( ! $first ) { $sql .= ","; $sql2 .= ","; }
1212                                 $first = false;
1213                                 $sql .= "({$lid},'{$t}')";
1214                                 $sql2 .= "{$lid}";
1215                         }
1216                         $sql2 .= ")";
1217                         if ( ! $first ) {
1218                                 wfQuery( $sql, DB_WRITE, $fname );
1219                                 wfQuery( $sql2, DB_WRITE, $fname );
1220                         }
1221                         wfFreeResult( $res );
1222
1223                         $sql = "DELETE FROM links WHERE l_to={$id}";
1224                         wfQuery( $sql, DB_WRITE, $fname );
1225
1226                         $sql = "DELETE FROM links WHERE l_from='{$t}'";
1227                         wfQuery( $sql, DB_WRITE, $fname );
1228
1229                         $sql = "DELETE FROM imagelinks WHERE il_from='{$t}'";
1230                         wfQuery( $sql, DB_WRITE, $fname );
1231
1232                         $sql = "DELETE FROM brokenlinks WHERE bl_from={$id}";
1233                         wfQuery( $sql, DB_WRITE, $fname );
1234                 }
1235
1236                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
1237                 $art = $title->getPrefixedText();
1238                 $wpReason = wfCleanQueryVar( $wpReason );
1239                 $log->addEntry( str_replace( "$1", $art, wfMsg( "deletedarticle" ) ), $wpReason );
1240
1241                 # Clear the cached article id so the interface doesn't act like we exist
1242                 $this->mTitle->resetArticleID( 0 );
1243                 $this->mTitle->mArticleID = 0;
1244         }
1245
1246         function rollback()
1247         {
1248                 global $wgUser, $wgLang, $wgOut, $from;
1249
1250                 if ( ! $wgUser->isSysop() ) {
1251                         $wgOut->sysopRequired();
1252                         return;
1253                 }
1254
1255                 # Replace all this user's current edits with the next one down
1256                 $tt = wfStrencode( $this->mTitle->getDBKey() );
1257                 $n = $this->mTitle->getNamespace();
1258
1259                 # Get the last editor
1260                 $sql = "SELECT cur_id,cur_user,cur_user_text,cur_comment FROM cur WHERE cur_title='{$tt}' AND cur_namespace={$n}";
1261                 $res = wfQuery( $sql, DB_READ );
1262                 if( ($x = wfNumRows( $res )) != 1 ) {
1263                         # Something wrong
1264                         $wgOut->addHTML( wfMsg( "notanarticle" ) );
1265                         return;
1266                 }
1267                 $s = wfFetchObject( $res );
1268                 $ut = wfStrencode( $s->cur_user_text );
1269                 $uid = $s->cur_user;
1270                 $pid = $s->cur_id;
1271
1272                 $from = str_replace( '_', ' ', wfCleanQueryVar( $from ) );
1273                 if( $from != $s->cur_user_text ) {
1274                         $wgOut->setPageTitle(wfmsg("rollbackfailed"));
1275                         $wgOut->addWikiText( wfMsg( "alreadyrolled",
1276                                 htmlspecialchars( $this->mTitle->getPrefixedText()),
1277                                 htmlspecialchars( $from ),
1278                                 htmlspecialchars( $s->cur_user_text ) ) );
1279                         if($s->cur_comment != "") {
1280                                 $wgOut->addHTML(
1281                                         wfMsg("editcomment",
1282                                         htmlspecialchars( $s->cur_comment ) ) );
1283                                 }
1284                         return;
1285                 }
1286
1287                 # Get the last edit not by this guy
1288                 $sql = "SELECT old_text,old_user,old_user_text
1289                 FROM old USE INDEX (name_title_timestamp)
1290                 WHERE old_namespace={$n} AND old_title='{$tt}'
1291                 AND (old_user <> {$uid} OR old_user_text <> '{$ut}')
1292                 ORDER BY inverse_timestamp LIMIT 1";
1293                 $res = wfQuery( $sql, DB_READ );
1294                 if( wfNumRows( $res ) != 1 ) {
1295                         # Something wrong
1296                         $wgOut->setPageTitle(wfMsg("rollbackfailed"));
1297                         $wgOut->addHTML( wfMsg( "cantrollback" ) );
1298                         return;
1299                 }
1300                 $s = wfFetchObject( $res );
1301
1302                 # Save it!
1303                 $newcomment = str_replace( "$1", $s->old_user_text, wfMsg( "revertpage" ) );
1304                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1305                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1306                 $wgOut->addHTML( "<h2>" . $newcomment . "</h2>\n<hr>\n" );
1307                 $this->updateArticle( $s->old_text, $newcomment, 1, $this->mTitle->userIsWatching() );
1308
1309                 $wgOut->returnToMain( false );
1310         }
1311
1312
1313         # Do standard deferred updates after page view
1314
1315         /* private */ function viewUpdates()
1316         {
1317                 global $wgDeferredUpdateList;
1318
1319                 if ( 0 != $this->getID() ) {
1320                         global $wgDisableCounters;
1321                         if( !$wgDisableCounters ) {
1322                                 $u = new ViewCountUpdate( $this->getID() );
1323                                 array_push( $wgDeferredUpdateList, $u );
1324                                 $u = new SiteStatsUpdate( 1, 0, 0 );
1325                                 array_push( $wgDeferredUpdateList, $u );
1326                         }
1327                         $u = new UserTalkUpdate( 0, $this->mTitle->getNamespace(),
1328                           $this->mTitle->getDBkey() );
1329                         array_push( $wgDeferredUpdateList, $u );
1330                 }
1331         }
1332
1333         # Do standard deferred updates after page edit.
1334         # Every 1000th edit, prune the recent changes table.
1335
1336         /* private */ function editUpdates( $text )
1337         {
1338                 global $wgDeferredUpdateList, $wgDBname, $wgMemc;
1339
1340                 wfSeedRandom();
1341                 if ( 0 == mt_rand( 0, 999 ) ) {
1342                         $cutoff = wfUnix2Timestamp( time() - ( 7 * 86400 ) );
1343                         $sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$cutoff}'";
1344                         wfQuery( $sql, DB_WRITE );
1345                 }
1346                 $id = $this->getID();
1347                 $title = $this->mTitle->getPrefixedDBkey();
1348                 $adj = $this->mCountAdjustment;
1349
1350                 if ( 0 != $id ) {
1351                         $u = new LinksUpdate( $id, $title );
1352                         array_push( $wgDeferredUpdateList, $u );
1353                         $u = new SiteStatsUpdate( 0, 1, $adj );
1354                         array_push( $wgDeferredUpdateList, $u );
1355                         $u = new SearchUpdate( $id, $title, $text );
1356                         array_push( $wgDeferredUpdateList, $u );
1357
1358                         $u = new UserTalkUpdate( 1, $this->mTitle->getNamespace(),
1359                           $this->mTitle->getDBkey() );
1360                         array_push( $wgDeferredUpdateList, $u );
1361
1362                         if ( $this->getNamespace == NS_MEDIAWIKI ) {
1363                                 $messageCache = $wgMemc->get( "$wgDBname:messages" );
1364                                 if (!$messageCache) {
1365                                         $messageCache = wfLoadAllMessages();
1366                                 }
1367                                 $messageCache[$title] = $text;
1368                                 $wgMemc->set( "$wgDBname:messages" );
1369                         }
1370                 }
1371         }
1372
1373         /* private */ function setOldSubtitle()
1374         {
1375                 global $wgLang, $wgOut;
1376
1377                 $td = $wgLang->timeanddate( $this->mTimestamp, true );
1378                 $r = str_replace( "$1", "{$td}", wfMsg( "revisionasof" ) );
1379                 $wgOut->setSubtitle( "({$r})" );
1380         }
1381
1382         function blockedIPpage()
1383         {
1384                 global $wgOut, $wgUser, $wgLang;
1385
1386                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
1387                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1388                 $wgOut->setArticleFlag( false );
1389
1390                 $id = $wgUser->blockedBy();
1391                 $reason = $wgUser->blockedFor();
1392
1393                 $name = User::whoIs( $id );
1394                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
1395                   ":{$name}|{$name}]]";
1396
1397                 $text = str_replace( "$1", $link, wfMsg( "blockedtext" ) );
1398                 $text = str_replace( "$2", $reason, $text );
1399                 $text = str_replace( "$3", getenv( "REMOTE_ADDR" ), $text );
1400                 $wgOut->addWikiText( $text );
1401                 $wgOut->returnToMain( false );
1402         }
1403
1404         # This function is called right before saving the wikitext,
1405         # so we can do things like signatures and links-in-context.
1406
1407         function preSaveTransform( $text )
1408         {
1409                 $s = "";
1410                 while ( "" != $text ) {
1411                         $p = preg_split( "/<\\s*nowiki\\s*>/i", $text, 2 );
1412                         $s .= $this->pstPass2( $p[0] );
1413
1414                         if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $text = ""; }
1415                         else {
1416                                 $q = preg_split( "/<\\/\\s*nowiki\\s*>/i", $p[1], 2 );
1417                                 $s .= "<nowiki>{$q[0]}</nowiki>";
1418                                 $text = $q[1];
1419                         }
1420                 }
1421                 return rtrim( $s );
1422         }
1423
1424         /* private */ function pstPass2( $text )
1425         {
1426                 global $wgUser, $wgLang, $wgLocaltimezone;
1427
1428                 # Signatures
1429                 #
1430                 $n = $wgUser->getName();
1431                 $k = $wgUser->getOption( "nickname" );
1432                 if ( "" == $k ) { $k = $n; }
1433                 if(isset($wgLocaltimezone)) {
1434                         $oldtz = getenv("TZ"); putenv("TZ=$wgLocaltimezone");
1435                 }
1436                 /* Note: this is an ugly timezone hack for the European wikis */
1437                 $d = $wgLang->timeanddate( date( "YmdHis" ), false ) .
1438                   " (" . date( "T" ) . ")";
1439                 if(isset($wgLocaltimezone)) putenv("TZ=$oldtz");
1440
1441                 $text = preg_replace( "/~~~~/", "[[" . $wgLang->getNsText(
1442                   Namespace::getUser() ) . ":$n|$k]] $d", $text );
1443                 $text = preg_replace( "/~~~/", "[[" . $wgLang->getNsText(
1444                   Namespace::getUser() ) . ":$n|$k]]", $text );
1445
1446                 # Context links: [[|name]] and [[name (context)|]]
1447                 #
1448                 $tc = "[&;%\\-,.\\(\\)' _0-9A-Za-z\\/:\\x80-\\xff]";
1449                 $np = "[&;%\\-,.' _0-9A-Za-z\\/:\\x80-\\xff]"; # No parens
1450                 $namespacechar = '[ _0-9A-Za-z\x80-\xff]'; # Namespaces can use non-ascii!
1451                 $conpat = "/^({$np}+) \\(({$tc}+)\\)$/";
1452
1453                 $p1 = "/\[\[({$np}+) \\(({$np}+)\\)\\|]]/";             # [[page (context)|]]
1454                 $p2 = "/\[\[\\|({$tc}+)]]/";                                    # [[|page]]
1455                 $p3 = "/\[\[($namespacechar+):({$np}+)\\|]]/";          # [[namespace:page|]]
1456                 $p4 = "/\[\[($namespacechar+):({$np}+) \\(({$np}+)\\)\\|]]/";
1457                                                                                                                 # [[ns:page (cont)|]]
1458                 $context = "";
1459                 $t = $this->mTitle->getText();
1460                 if ( preg_match( $conpat, $t, $m ) ) {
1461                         $context = $m[2];
1462                 }
1463                 $text = preg_replace( $p4, "[[\\1:\\2 (\\3)|\\2]]", $text );
1464                 $text = preg_replace( $p1, "[[\\1 (\\2)|\\1]]", $text );
1465                 $text = preg_replace( $p3, "[[\\1:\\2|\\2]]", $text );
1466
1467                 if ( "" == $context ) {
1468                         $text = preg_replace( $p2, "[[\\1]]", $text );
1469                 } else {
1470                         $text = preg_replace( $p2, "[[\\1 ({$context})|\\1]]", $text );
1471                 }
1472
1473                 # {{SUBST:xxx}} variables
1474                 #
1475                 $mw =& MagicWord::get( MAG_SUBST );
1476                 $text = $mw->substituteCallback( $text, "wfReplaceSubstVar" );
1477
1478                 return $text;
1479         }
1480
1481         /* Caching functions */
1482
1483         function tryFileCache() {
1484                 if($this->isFileCacheable()) {
1485                         $touched = $this->mTouched;
1486                         if( strpos( $this->mContent, "{{" ) !== false ) {
1487                                 # Expire pages with variable replacements in an hour
1488                                 $expire = wfUnix2Timestamp( time() - 3600 );
1489                                 $touched = max( $expire, $touched );
1490                         }
1491                         $cache = new CacheManager( $this->mTitle );
1492                         if($cache->isFileCacheGood( $touched )) {
1493                                 global $wgOut;
1494                                 wfDebug( " tryFileCache() - about to load\n" );
1495                                 $cache->loadFromFileCache();
1496                                 $wgOut->reportTime(); # For profiling
1497                                 exit;
1498                         } else {
1499                                 wfDebug( " tryFileCache() - starting buffer\n" );
1500                                 if($cache->useGzip() && wfClientAcceptsGzip()) {
1501                                         /* For some reason, adding this header line over in
1502                                            CacheManager::saveToFileCache() fails on my test
1503                                            setup at home, though it works on the live install.
1504                                            Make double-sure...  --brion */
1505                                         header( "Content-Encoding: gzip" );
1506                                 }
1507                                 ob_start( array(&$cache, 'saveToFileCache' ) );
1508                         }
1509                 } else {
1510                         wfDebug( " tryFileCache() - not cacheable\n" );
1511                 }
1512         }
1513
1514         function isFileCacheable() {
1515                 global $wgUser, $wgUseFileCache, $wgShowIPinHeader;
1516                 global $action, $oldid, $diff, $redirect, $printable;
1517                 return $wgUseFileCache
1518                         and (!$wgShowIPinHeader)
1519                         and ($this->getID() != 0)
1520                         and ($wgUser->getId() == 0)
1521                         and (!$wgUser->getNewtalk())
1522                         and ($this->mTitle->getNamespace != Namespace::getSpecial())
1523                         and ($action == "view")
1524                         and (!isset($oldid))
1525                         and (!isset($diff))
1526                         and (!isset($redirect))
1527                         and (!isset($printable))
1528                         and (!$this->mRedirectedFrom);
1529         }
1530
1531         function checkTouched() {
1532                 $id = $this->getID();
1533                 $sql = "SELECT cur_touched,cur_is_redirect FROM cur WHERE cur_id=$id";
1534                 $res = wfQuery( $sql, DB_READ, "Article::checkTouched" );
1535                 if( $s = wfFetchObject( $res ) ) {
1536                         $this->mTouched = $s->cur_touched;
1537                         return !$s->cur_is_redirect;
1538                 } else {
1539                         return false;
1540                 }
1541         }
1542 }
1543
1544 function wfReplaceSubstVar( $matches ) {
1545         return wfMsg( $matches[1] );
1546 }
1547
1548 ?>