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