includes/Article.php

   1 <?
   2 # Class representing a Wikipedia article and history.
   3 # See design.doc for an overview.
   4
   5 class Article {
   6         /* private */ var $mContent, $mContentLoaded;
   7         /* private */ var $mUser, $mTimestamp, $mUserText;
   8         /* private */ var $mCounter, $mComment, $mCountAdjustment;
   9         /* private */ var $mMinorEdit, $mRedirectedFrom;
  10         /* private */ var $mTouched, $mFileCache;
  11
  12         function Article() { $this->clear(); }
  13
  14         /* private */ function clear()
  15         {
  16                 $this->mContentLoaded = false;
  17                 $this->mUser = $this->mCounter = -1; # Not loaded
  18                 $this->mRedirectedFrom = $this->mUserText =
  19                 $this->mTimestamp = $this->mComment = $this->mFileCache = "";
  20                 $this->mCountAdjustment = 0;
  21                 $this->mTouched = "19700101000000";
  22         }
  23
  24         /* static */ function newFromID( $newid )
  25         {
  26                 global $wgOut, $wgTitle, $wgArticle;
  27                 $a = new Article();
  28                 $n = Article::nameOf( $newid );
  29
  30                 $wgTitle = Title::newFromDBkey( $n );
  31                 $wgTitle->resetArticleID( $newid );
  32
  33                 return $a;
  34         }
  35
  36         /* static */ function nameOf( $id )
  37         {
  38                 $sql = "SELECT cur_namespace,cur_title FROM cur WHERE " .
  39                   "cur_id={$id}";
  40                 $res = wfQuery( $sql, "Article::nameOf" );
  41                 if ( 0 == wfNumRows( $res ) ) { return NULL; }
  42
  43                 $s = wfFetchObject( $res );
  44                 $n = Title::makeName( $s->cur_namespace, $s->cur_title );
  45                 return $n;
  46         }
  47
  48         # Note that getContent/loadContent may follow redirects if
  49         # not told otherwise, and so may cause a change to wgTitle.
  50
  51         function getContent( $noredir = false )
  52         {
  53                 global $action,$section,$count,$wgTitle; # From query string
  54                 wfProfileIn( "Article::getContent" );
  55
  56                 if ( 0 == $this->getID() ) {
  57                         if ( "edit" == $action ) {
  58
  59                                 global $wgTitle;
  60                                 return ""; # was "newarticletext", now moved above the box)
  61
  62
  63                         }
  64                         wfProfileOut();
  65                         return wfMsg( "noarticletext" );
  66                 } else {
  67                         $this->loadContent( $noredir );
  68                         wfProfileOut();
  69
  70                         if(
  71                                 # check if we're displaying a [[User talk:x.x.x.x]] anonymous talk page
  72                                 ( $wgTitle->getNamespace() == Namespace::getTalk( Namespace::getUser()) ) &&
  73                                   preg_match("/^\d{1,3}\.\d{1,3}.\d{1,3}\.\d{1,3}$/",$wgTitle->getText()) &&
  74                                   $action=="view"
  75                                 )
  76                                 {
  77                                 return $this->mContent . "\n" .wfMsg("anontalkpagetext"); }
  78                         else {
  79                                 if($action=="edit") {
  80                                         if($section!="") {
  81
  82                                                 $secs=preg_split("/(^=+.*?=+)/m",
  83                                                  $this->mContent, -1,
  84                                                  PREG_SPLIT_DELIM_CAPTURE);
  85                                                 if($section==0) {
  86                                                         return trim($secs[0]);
  87                                                 } else {
  88                                                         return trim($secs[$section*2-1] . $secs[$section*2]);
  89                                                 }
  90                                         }
  91                                 }
  92                                 return $this->mContent;
  93                         }
  94                 }
  95         }
  96
  97         function loadContent( $noredir = false )
  98         {
  99                 global $wgOut, $wgTitle;
 100                 global $oldid, $redirect; # From query
 101
 102                 if ( $this->mContentLoaded ) return;
 103                 $fname = "Article::loadContent";
 104
 105                 # Pre-fill content with error message so that if something
 106                 # fails we'll have something telling us what we intended.
 107
 108                 $t = $wgTitle->getPrefixedText();
 109                 if ( $oldid ) { $t .= ",oldid={$oldid}"; }
 110                 if ( $redirect ) { $t .= ",redirect={$redirect}"; }
 111                 $this->mContent = str_replace( "$1", $t, wfMsg( "missingarticle" ) );
 112
 113                 if ( ! $oldid ) {       # Retrieve current version
 114                         $id = $this->getID();
 115                         if ( 0 == $id ) return;
 116
 117                         $sql = "SELECT " .
 118                           "cur_text,cur_timestamp,cur_user,cur_counter,cur_restrictions,cur_touched " .
 119                           "FROM cur WHERE cur_id={$id}";
 120                         $res = wfQuery( $sql, $fname );
 121                         if ( 0 == wfNumRows( $res ) ) { return; }
 122
 123                         $s = wfFetchObject( $res );
 124
 125                         # If we got a redirect, follow it (unless we've been told
 126                         # not to by either the function parameter or the query
 127
 128                         if ( ( "no" != $redirect ) && ( false == $noredir ) &&
 129                           ( preg_match( "/^#redirect/i", $s->cur_text ) ) ) {
 130                                 if ( preg_match( "/\\[\\[([^\\]\\|]+)[\\]\\|]/",
 131                                   $s->cur_text, $m ) ) {
 132                                         $rt = Title::newFromText( $m[1] );
 133
 134                                         # Gotta hand redirects to special pages differently:
 135                                         # Fill the HTTP response "Location" header and ignore
 136                                         # the rest of the page we're on.
 137
 138                                         if ( $rt->getInterwiki() != "" ) {
 139                                                 $wgOut->redirect( $rt->getFullURL() ) ;
 140                                                 return;
 141                                         }
 142                                         if ( $rt->getNamespace() == Namespace::getSpecial() ) {
 143                                                 $wgOut->redirect( wfLocalUrl(
 144                                                   $rt->getPrefixedURL() ) );
 145                                                 return;
 146                                         }
 147                                         $rid = $rt->getArticleID();
 148                                         if ( 0 != $rid ) {
 149                                                 $sql = "SELECT cur_text,cur_timestamp,cur_user," .
 150                                                   "cur_counter,cur_touched FROM cur WHERE cur_id={$rid}";
 151                                                 $res = wfQuery( $sql, $fname );
 152
 153                                                 if ( 0 != wfNumRows( $res ) ) {
 154                                                         $this->mRedirectedFrom = $wgTitle->getPrefixedText();
 155                                                         $wgTitle = $rt;
 156                                                         $s = wfFetchObject( $res );
 157                                                 }
 158                                         }
 159                                 }
 160                         }
 161                         $this->mContent = $s->cur_text;
 162                         $this->mUser = $s->cur_user;
 163                         $this->mCounter = $s->cur_counter;
 164                         $this->mTimestamp = $s->cur_timestamp;
 165                         $this->mTouched = $s->cur_touched;
 166                         $wgTitle->mRestrictions = explode( ",", trim( $s->cur_restrictions ) );
 167                         $wgTitle->mRestrictionsLoaded = true;
 168                         wfFreeResult( $res );
 169                 } else { # oldid set, retrieve historical version
 170                         $sql = "SELECT old_text,old_timestamp,old_user FROM old " .
 171                           "WHERE old_id={$oldid}";
 172                         $res = wfQuery( $sql, $fname );
 173                         if ( 0 == wfNumRows( $res ) ) { return; }
 174
 175                         $s = wfFetchObject( $res );
 176                         $this->mContent = $s->old_text;
 177                         $this->mUser = $s->old_user;
 178                         $this->mCounter = 0;
 179                         $this->mTimestamp = $s->old_timestamp;
 180                         wfFreeResult( $res );
 181                 }
 182                 $this->mContentLoaded = true;
 183         }
 184
 185         function getID() { global $wgTitle; return $wgTitle->getArticleID(); }
 186
 187         function getCount()
 188         {
 189                 if ( -1 == $this->mCounter ) {
 190                         $id = $this->getID();
 191                         $this->mCounter = wfGetSQL( "cur", "cur_counter", "cur_id={$id}" );
 192                 }
 193                 return $this->mCounter;
 194         }
 195
 196         # Would the given text make this article a "good" article (i.e.,
 197         # suitable for including in the article count)?
 198
 199         function isCountable( $text )
 200         {
 201                 global $wgTitle, $wgUseCommaCount;
 202
 203                 if ( 0 != $wgTitle->getNamespace() ) { return 0; }
 204                 if ( preg_match( "/^#redirect/i", $text ) ) { return 0; }
 205                 $token = ($wgUseCommaCount ? "," : "[[" );
 206                 if ( false === strstr( $text, $token ) ) { return 0; }
 207                 return 1;
 208         }
 209
 210         # Load the field related to the last edit time of the article.
 211         # This isn't necessary for all uses, so it's only done if needed.
 212
 213         /* private */ function loadLastEdit()
 214         {
 215                 global $wgOut;
 216                 if ( -1 != $this->mUser ) return;
 217
 218                 $sql = "SELECT cur_user,cur_user_text,cur_timestamp," .
 219                   "cur_comment,cur_minor_edit FROM cur WHERE " .
 220                   "cur_id=" . $this->getID();
 221                 $res = wfQuery( $sql, "Article::loadLastEdit" );
 222
 223                 if ( wfNumRows( $res ) > 0 ) {
 224                         $s = wfFetchObject( $res );
 225                         $this->mUser = $s->cur_user;
 226                         $this->mUserText = $s->cur_user_text;
 227                         $this->mTimestamp = $s->cur_timestamp;
 228                         $this->mComment = $s->cur_comment;
 229                         $this->mMinorEdit = $s->cur_minor_edit;
 230                 }
 231         }
 232
 233         function getTimestamp()
 234         {
 235                 $this->loadLastEdit();
 236                 return $this->mTimestamp;
 237         }
 238
 239         function getUser()
 240         {
 241                 $this->loadLastEdit();
 242                 return $this->mUser;
 243         }
 244
 245         function getUserText()
 246         {
 247                 $this->loadLastEdit();
 248                 return $this->mUserText;
 249         }
 250
 251         function getComment()
 252         {
 253                 $this->loadLastEdit();
 254                 return $this->mComment;
 255         }
 256
 257         function getMinorEdit()
 258         {
 259                 $this->loadLastEdit();
 260                 return $this->mMinorEdit;
 261         }
 262
 263         # This is the default action of the script: just view the page of
 264         # the given title.
 265
 266         function view()
 267         {
 268                 global $wgUser, $wgOut, $wgTitle, $wgLang;
 269                 global $oldid, $diff; # From query
 270                 global $wgLinkCache;
 271                 wfProfileIn( "Article::view" );
 272
 273                 $wgOut->setArticleFlag( true );
 274                 $wgOut->setRobotpolicy( "index,follow" );
 275
 276                 # If we got diff and oldid in the query, we want to see a
 277                 # diff page instead of the article.
 278
 279                 if ( isset( $diff ) ) {
 280                         $wgOut->setPageTitle( $wgTitle->getPrefixedText() );
 281                         $de = new DifferenceEngine( $oldid, $diff );
 282                         $de->showDiffPage();
 283                         wfProfileOut();
 284                         return;
 285                 }
 286                 $text = $this->getContent(); # May change wgTitle!
 287                 $wgOut->setPageTitle( $wgTitle->getPrefixedText() );
 288                 $wgOut->setHTMLTitle( $wgTitle->getPrefixedText() .
 289                   " - " . wfMsg( "wikititlesuffix" ) );
 290
 291                 # We're looking at an old revision
 292
 293                 if ( $oldid ) {
 294                         $this->setOldSubtitle();
 295                         $wgOut->setRobotpolicy( "noindex,follow" );
 296                 }
 297                 if ( "" != $this->mRedirectedFrom ) {
 298                         $sk = $wgUser->getSkin();
 299                         $redir = $sk->makeKnownLink( $this->mRedirectedFrom, "",
 300                           "redirect=no" );
 301                         $s = str_replace( "$1", $redir, wfMsg( "redirectedfrom" ) );
 302                         $wgOut->setSubtitle( $s );
 303                 }
 304                 $wgOut->checkLastModified( $this->mTouched );
 305                 $this->tryFileCache();
 306                 $wgLinkCache->preFill( $wgTitle );
 307                 $wgOut->addWikiText( $text );
 308
 309                 # If the article we've just shown is in the "Image" namespace,
 310                 # follow it with the history list and link list for the image
 311                 # it describes.
 312
 313                 if ( Namespace::getImage() == $wgTitle->getNamespace() ) {
 314                         $this->imageHistory();
 315                         $this->imageLinks();
 316                 }
 317                 $this->viewUpdates();
 318                 wfProfileOut();
 319         }
 320
 321         # This is the function that gets called for "action=edit".
 322
 323         function edit()
 324         {
 325                 global $wgOut, $wgUser, $wgTitle;
 326                 global $wpTextbox1, $wpSummary, $wpSave, $wpPreview;
 327                 global $wpMinoredit, $wpEdittime, $wpTextbox2;
 328
 329                 $fields = array( "wpTextbox1", "wpSummary", "wpTextbox2" );
 330                 wfCleanFormFields( $fields );
 331
 332                 if ( ! $wgTitle->userCanEdit() ) {
 333                         $this->view();
 334                         return;
 335                 }
 336                 if ( $wgUser->isBlocked() ) {
 337                         $this->blockedIPpage();
 338                         return;
 339                 }
 340                 if ( wfReadOnly() ) {
 341                         if( isset( $wpSave ) or isset( $wpPreview ) ) {
 342                                 $this->editForm( "preview" );
 343                         } else {
 344                                 $wgOut->readOnlyPage();
 345                         }
 346                         return;
 347                 }
 348                 if ( $_SERVER['REQUEST_METHOD'] != "POST" ) unset( $wpSave );
 349                 if ( isset( $wpSave ) ) {
 350                         $this->editForm( "save" );
 351                 } else if ( isset( $wpPreview ) ) {
 352                         $this->editForm( "preview" );
 353                 } else { # First time through
 354                         $this->editForm( "initial" );
 355                 }
 356         }
 357
 358         # Since there is only one text field on the edit form,
 359         # pressing <enter> will cause the form to be submitted, but
 360         # the submit button value won't appear in the query, so we
 361         # Fake it here before going back to edit().  This is kind of
 362         # ugly, but it helps some old URLs to still work.
 363
 364         function submit()
 365         {
 366                 global $wpSave, $wpPreview;
 367                 if ( ! isset( $wpPreview ) ) { $wpSave = 1; }
 368
 369                 $this->edit();
 370         }
 371
 372         # The edit form is self-submitting, so that when things like
 373         # preview and edit conflicts occur, we get the same form back
 374         # with the extra stuff added.  Only when the final submission
 375         # is made and all is well do we actually save and redirect to
 376         # the newly-edited page.
 377
 378         function editForm( $formtype )
 379         {
 380                 global $wgOut, $wgUser, $wgTitle;
 381                 global $wpTextbox1, $wpSummary, $wpWatchthis;
 382                 global $wpSave, $wpPreview;
 383                 global $wpMinoredit, $wpEdittime, $wpTextbox2, $wpSection;
 384                 global $oldid, $redirect, $section;
 385                 global $wgLang;
 386
 387                 if(isset($wpSection)) { $section=$wpSection; }
 388
 389                 $sk = $wgUser->getSkin();
 390                 $isConflict = false;
 391                 $wpTextbox1 = rtrim ( $wpTextbox1 ) ; # To avoid text getting longer on each preview
 392
 393                 if(!$wgTitle->getArticleID()) { # new article
 394
 395                         $wgOut->addWikiText(wfmsg("newarticletext"));
 396
 397                 }
 398
 399                 # Attempt submission here.  This will check for edit conflicts,
 400                 # and redundantly check for locked database, blocked IPs, etc.
 401                 # that edit() already checked just in case someone tries to sneak
 402                 # in the back door with a hand-edited submission URL.
 403
 404                 if ( "save" == $formtype ) {
 405                         if ( $wgUser->isBlocked() ) {
 406                                 $this->blockedIPpage();
 407                                 return;
 408                         }
 409                         if ( wfReadOnly() ) {
 410                                 $wgOut->readOnlyPage();
 411                                 return;
 412                         }
 413                         # If article is new, insert it.
 414
 415                         $aid = $wgTitle->getArticleID();
 416                         if ( 0 == $aid ) {
 417                                 # we need to strip Windoze linebreaks because some browsers
 418                                 # append them and the string comparison fails
 419                                 if ( ( "" == $wpTextbox1 ) ||
 420                                   ( wfMsg( "newarticletext" ) == rtrim( preg_replace("/\r/","",$wpTextbox1) ) ) ) {
 421                                         $wgOut->redirect(  wfLocalUrl(
 422                                           $wgTitle->getPrefixedURL() ) );
 423                                         return;
 424                                 }
 425                                 $this->mCountAdjustment = $this->isCountable( $wpTextbox1 );
 426                                 $this->insertNewArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis );
 427                                 return;
 428                         }
 429                         # Article exists. Check for edit conflict.
 430
 431                         $this->clear(); # Force reload of dates, etc.
 432                         if ( $this->getTimestamp() != $wpEdittime ) { $isConflict = true; }
 433                         $u = $wgUser->getID();
 434
 435                         # Supress edit conflict with self
 436
 437                         if ( ( 0 != $u ) && ( $this->getUser() == $u ) ) {
 438                                 $isConflict = false;
 439                         }
 440                         if ( ! $isConflict ) {
 441                                 # All's well: update the article here
 442                                 $this->updateArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis, $wpSection );
 443                                 return;
 444                         }
 445                 }
 446                 # First time through: get contents, set time for conflict
 447                 # checking, etc.
 448
 449                 if ( "initial" == $formtype ) {
 450                         $wpEdittime = $this->getTimestamp();
 451                         $wpTextbox1 = $this->getContent(true);
 452                         $wpSummary = "";
 453                 }
 454                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 455                 $wgOut->setArticleFlag( false );
 456
 457                 if ( $isConflict ) {
 458                         $s = str_replace( "$1", $wgTitle->getPrefixedText(),
 459                           wfMsg( "editconflict" ) );
 460                         $wgOut->setPageTitle( $s );
 461                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 462
 463                         $wpTextbox2 = $wpTextbox1;
 464                         $wpTextbox1 = $this->getContent(true);
 465                         $wpEdittime = $this->getTimestamp();
 466                 } else {
 467                         $s = str_replace( "$1", $wgTitle->getPrefixedText(),
 468                           wfMsg( "editing" ) );
 469
 470                         if($section!="") { $s.=wfMsg("sectionedit");}
 471                         $wgOut->setPageTitle( $s );
 472                         if ( $oldid ) {
 473                                 $this->setOldSubtitle();
 474                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 475                         }
 476                 }
 477
 478                 if( wfReadOnly() ) {
 479                         $wgOut->addHTML( "<strong>" .
 480                                 wfMsg( "readonlywarning" ) .
 481                                 "</strong>" );
 482                 }
 483                 if( $wgTitle->isProtected() ) {
 484                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 485                           "</strong><br />\n" );
 486                 }
 487
 488                 $kblength = (int)(strlen( $wpTextbox1 ) / 1024);
 489                 if( $kblength > 29 ) {
 490                         $wgOut->addHTML( "<strong>" .
 491                                 str_replace( '$1', $kblength , wfMsg( "longpagewarning" ) )
 492                                 . "</strong>" );
 493                 }
 494
 495                 $rows = $wgUser->getOption( "rows" );
 496                 $cols = $wgUser->getOption( "cols" );
 497
 498                 $ew = $wgUser->getOption( "editwidth" );
 499                 if ( $ew ) $ew = " style=\"width:100%\"";
 500                 else $ew = "" ;
 501
 502                 $q = "action=submit";
 503                 if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 504                 $action = wfEscapeHTML( wfLocalUrl( $wgTitle->getPrefixedURL(), $q ) );
 505
 506                 $summary = wfMsg( "summary" );
 507                 $minor = wfMsg( "minoredit" );
 508                 $watchthis = wfMsg ("watchthis");
 509                 $save = wfMsg( "savearticle" );
 510                 $prev = wfMsg( "showpreview" );
 511
 512                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedURL(),
 513                   wfMsg( "cancel" ) );
 514                 $edithelp = $sk->makeKnownLink( wfMsg( "edithelppage" ),
 515                   wfMsg( "edithelp" ) );
 516                 $copywarn = str_replace( "$1", $sk->makeKnownLink(
 517                   wfMsg( "copyrightpage" ) ), wfMsg( "copyrightwarning" ) );
 518
 519                 $wpTextbox1 = wfEscapeHTML( $wpTextbox1 );
 520                 $wpTextbox2 = wfEscapeHTML( $wpTextbox2 );
 521                 $wpSummary = wfEscapeHTML( $wpSummary );
 522
 523                 // activate checkboxes if user wants them to be always active
 524                 if (!$wpPreview && $wgUser->getOption("watchdefault")) $wpWatchthis=1;
 525                 if (!$wpPreview && $wgUser->getOption("minordefault")) $wpMinoredit=1;
 526
 527                 // activate checkbox also if user is already watching the page,
 528                 // require wpWatchthis to be unset so that second condition is not
 529                 // checked unnecessarily
 530                 if (!$wpWatchthis && !$wpPreview && $wgTitle->userIsWatching()) $wpWatchthis=1;
 531
 532                 if ( 0 != $wgUser->getID() ) {
 533                         $checkboxhtml=
 534                         "<input tabindex=3 type=checkbox value=1 name='wpMinoredit'".($wpMinoredit?" checked":"").">{$minor}".
 535                         "<input tabindex=4 type=checkbox name='wpWatchthis'".($wpWatchthis?" checked":"").">{$watchthis}<br>";
 536
 537                 } else {
 538                         $checkboxhtml="";
 539                 }
 540
 541
 542                 if ( "preview" == $formtype) {
 543
 544                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><large><center><font color=\"#cc0000\">" .
 545                         wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></large><P>\n";
 546                         if ( $isConflict ) {
 547                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 548                                   "</h2>\n";
 549                         }
 550                         $previewtext = wfUnescapeHTML( $wpTextbox1 );
 551
 552                         if($wgUser->getOption("previewontop")) {
 553                                 $wgOut->addHTML($previewhead);
 554                                 $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) ."\n\n");
 555                         }
 556                         $wgOut->addHTML( "<br clear=\"all\" />\n" );
 557                 }
 558                 $wgOut->addHTML( "
 559 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 560 enctype=\"application/x-www-form-urlencoded\">
 561 <textarea tabindex=1 name=\"wpTextbox1\" rows={$rows}
 562 cols={$cols}{$ew} wrap=\"virtual\">" .
 563 $wgLang->recodeForEdit( $wpTextbox1 ) .
 564 "
 565 </textarea><br>
 566 {$summary}: <input tabindex=2 type=text value=\"{$wpSummary}\"
 567 name=\"wpSummary\" maxlength=200 size=60><br>
 568 {$checkboxhtml}
 569 <input tabindex=5 type=submit value=\"{$save}\" name=\"wpSave\">
 570 <input tabindex=6 type=submit value=\"{$prev}\" name=\"wpPreview\">
 571 <em>{$cancel}</em> | <em>{$edithelp}</em>
 572 <br><br>{$copywarn}
 573 <input type=hidden value=\"{$section}\" name=\"wpSection\">
 574 <input type=hidden value=\"{$wpEdittime}\" name=\"wpEdittime\">\n" );
 575
 576                 if ( $isConflict ) {
 577                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 578                         DifferenceEngine::showDiff( $wpTextbox2, $wpTextbox1,
 579                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 580
 581                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 582 <textarea tabindex=6 name=\"wpTextbox2\" rows={$rows} cols={$cols} wrap=virtual>"
 583 . $wgLang->recodeForEdit( $wpTextbox2 ) .
 584 "
 585 </textarea>" );
 586                 }
 587                 $wgOut->addHTML( "</form>\n" );
 588                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 589                         $wgOut->addHTML($previewhead);
 590                         $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) );
 591                 }
 592
 593         }
 594
 595         # Theoretically we could defer these whole insert and update
 596         # functions for after display, but that's taking a big leap
 597         # of faith, and we want to be able to report database
 598         # errors at some point.
 599
 600         /* private */ function insertNewArticle( $text, $summary, $isminor, $watchthis )
 601         {
 602                 global $wgOut, $wgUser, $wgTitle, $wgLinkCache;
 603                 $fname = "Article::insertNewArticle";
 604
 605                 $ns = $wgTitle->getNamespace();
 606                 $ttl = $wgTitle->getDBkey();
 607                 $text = $this->preSaveTransform( $text );
 608                 if ( preg_match( "/^#redirect/i", $text ) ) { $redir = 1; }
 609                 else { $redir = 0; }
 610
 611                 $now = wfTimestampNow();
 612                 $won = wfInvertTimestamp( $now );
 613                 wfSeedRandom();
 614                 $rand = number_format( mt_rand() / mt_getrandmax(), 12, ".", "" );
 615                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 616                   "cur_comment,cur_user,cur_timestamp,cur_minor_edit,cur_counter," .
 617                   "cur_restrictions,cur_user_text,cur_is_redirect," .
 618                   "cur_is_new,cur_random,cur_touched,inverse_timestamp) VALUES ({$ns},'" . wfStrencode( $ttl ) . "', '" .
 619                   wfStrencode( $text ) . "', '" .
 620                   wfStrencode( $summary ) . "', '" .
 621                   $wgUser->getID() . "', '{$now}', " .
 622                   ( $isminor ? 1 : 0 ) . ", 0, '', '" .
 623                   wfStrencode( $wgUser->getName() ) . "', $redir, 1, $rand, '{$now}', '{$won}')";
 624                 $res = wfQuery( $sql, $fname );
 625
 626                 $newid = wfInsertId();
 627                 $wgTitle->resetArticleID( $newid );
 628
 629                 $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 630                   "rc_namespace,rc_title,rc_new,rc_minor,rc_cur_id,rc_user," .
 631                   "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid,rc_bot) VALUES (" .
 632                   "'{$now}','{$now}',{$ns},'" . wfStrencode( $ttl ) . "',1," .
 633                   ( $isminor ? 1 : 0 ) . ",{$newid}," . $wgUser->getID() . ",'" .
 634                   wfStrencode( $wgUser->getName() ) . "','" .
 635                   wfStrencode( $summary ) . "',0,0," .
 636                   ( $wgUser->isBot() ? 1 : 0 ) . ")";
 637                 wfQuery( $sql, $fname );
 638                 if ($watchthis) {
 639                         if(!$wgTitle->userIsWatching()) $this->watch();
 640                 } else {
 641                         if ( $wgTitle->userIsWatching() ) {
 642                                 $this->unwatch();
 643                         }
 644                 }
 645
 646                 $this->showArticle( $text, wfMsg( "newarticle" ) );
 647         }
 648
 649         function updateArticle( $text, $summary, $minor, $watchthis, $section )
 650         {
 651                 global $wgOut, $wgUser, $wgTitle, $wgLinkCache;
 652                 global $wgDBtransactions;
 653                 $fname = "Article::updateArticle";
 654
 655                 // insert updated section into old text if we have only edited part
 656                 // of the article
 657                 if ($section != "") {
 658                         $oldtext=$this->getContent();
 659                         $secs=preg_split("/(^=+.*?=+)/m",$oldtext,-1,PREG_SPLIT_DELIM_CAPTURE);
 660                         $secs[$section*2]=$text."\n\n"; // replace with edited
 661                         if($section) { $secs[$section*2-1]=""; } // erase old headline
 662                         $text=join("",$secs);
 663                 }
 664                 if ( $this->mMinorEdit ) { $me1 = 1; } else { $me1 = 0; }
 665                 if ( $minor ) { $me2 = 1; } else { $me2 = 0; }
 666                 if ( preg_match( "/^(#redirect[^\\n]+)/i", $text, $m ) ) {
 667                         $redir = 1;
 668                         $text = $m[1] . "\n"; # Remove all content but redirect
 669                 }
 670                 else { $redir = 0; }
 671                 $this->loadLastEdit();
 672
 673                 $text = $this->preSaveTransform( $text );
 674
 675                 # Update article, but only if changed.
 676
 677                 if( $wgDBtransactions ) {
 678                         $sql = "BEGIN";
 679                         wfQuery( $sql );
 680                 }
 681                 $oldtext = $this->getContent( true );
 682
 683                 if ( 0 != strcmp( $text, $oldtext ) ) {
 684                         $this->mCountAdjustment = $this->isCountable( $text )
 685                           - $this->isCountable( $oldtext );
 686
 687                         $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 688                           "old_comment,old_user,old_user_text,old_timestamp," .
 689                           "old_minor_edit,inverse_timestamp) VALUES (" .
 690                           $wgTitle->getNamespace() . ", '" .
 691                           wfStrencode( $wgTitle->getDBkey() ) . "', '" .
 692                           wfStrencode( $oldtext ) . "', '" .
 693                           wfStrencode( $this->getComment() ) . "', " .
 694                           $this->getUser() . ", '" .
 695                           wfStrencode( $this->getUserText() ) . "', '" .
 696                           $this->getTimestamp() . "', " . $me1 . ", '" .
 697                           wfInvertTimestamp( $this->getTimestamp() ) . "')";
 698                         $res = wfQuery( $sql, $fname );
 699                         $oldid = wfInsertID( $res );
 700
 701                         $now = wfTimestampNow();
 702                         $won = wfInvertTimestamp( $now );
 703                         $sql = "UPDATE cur SET cur_text='" . wfStrencode( $text ) .
 704                           "',cur_comment='" .  wfStrencode( $summary ) .
 705                           "',cur_minor_edit={$me2}, cur_user=" . $wgUser->getID() .
 706                           ",cur_timestamp='{$now}',cur_user_text='" .
 707                           wfStrencode( $wgUser->getName() ) .
 708                           "',cur_is_redirect={$redir}, cur_is_new=0, cur_touched='{$now}', inverse_timestamp='{$won}' " .
 709                           "WHERE cur_id=" . $this->getID();
 710                         wfQuery( $sql, $fname );
 711
 712                         $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 713                           "rc_namespace,rc_title,rc_new,rc_minor,rc_bot,rc_cur_id,rc_user," .
 714                           "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid) VALUES (" .
 715                           "'{$now}','{$now}'," . $wgTitle->getNamespace() . ",'" .
 716                           wfStrencode( $wgTitle->getDBkey() ) . "',0,{$me2}," .
 717                           ( $wgUser->isBot() ? 1 : 0 ) . "," .
 718                           $this->getID() . "," . $wgUser->getID() . ",'" .
 719                           wfStrencode( $wgUser->getName() ) . "','" .
 720                           wfStrencode( $summary ) . "',0,{$oldid})";
 721                         wfQuery( $sql, $fname );
 722
 723                         $sql = "UPDATE recentchanges SET rc_this_oldid={$oldid} " .
 724                           "WHERE rc_namespace=" . $wgTitle->getNamespace() . " AND " .
 725                           "rc_title='" . wfStrencode( $wgTitle->getDBkey() ) . "' AND " .
 726                           "rc_timestamp='" . $this->getTimestamp() . "'";
 727                         wfQuery( $sql, $fname );
 728
 729                         $sql = "UPDATE recentchanges SET rc_cur_time='{$now}' " .
 730                           "WHERE rc_cur_id=" . $this->getID();
 731                         wfQuery( $sql, $fname );
 732                 }
 733                 if( $wgDBtransactions ) {
 734                         $sql = "COMMIT";
 735                         wfQuery( $sql );
 736                 }
 737
 738                 if ($watchthis) {
 739                         if (!$wgTitle->userIsWatching()) $this->watch();
 740                 } else {
 741                         if ( $wgTitle->userIsWatching() ) {
 742                                 $this->unwatch();
 743                         }
 744                 }
 745
 746                 $this->showArticle( $text, wfMsg( "updated" ) );
 747         }
 748
 749         # After we've either updated or inserted the article, update
 750         # the link tables and redirect to the new page.
 751
 752         function showArticle( $text, $subtitle )
 753         {
 754                 global $wgOut, $wgTitle, $wgUser, $wgLinkCache, $wgUseBetterLinksUpdate;
 755
 756                 $wgLinkCache = new LinkCache();
 757
 758                 # Get old version of link table to allow incremental link updates
 759                 if ( $wgUseBetterLinksUpdate ) {
 760                         $wgLinkCache->preFill( $wgTitle );
 761                         $wgLinkCache->clear();
 762                 }
 763
 764                 # Now update the link cache by parsing the text
 765                 $wgOut->addWikiText( $text );
 766
 767                 $this->editUpdates( $text );
 768                 if( preg_match( "/^#redirect/i", $text ) )
 769                         $r = "redirect=no";
 770                 else
 771                         $r = "";
 772                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL(), $r ) );
 773         }
 774
 775         # If the page we've just displayed is in the "Image" namespace,
 776         # we follow it with an upload history of the image and its usage.
 777
 778         function imageHistory()
 779         {
 780                 global $wgUser, $wgOut, $wgLang, $wgTitle;
 781                 $fname = "Article::imageHistory";
 782
 783                 $sql = "SELECT img_size,img_description,img_user," .
 784                   "img_user_text,img_timestamp FROM image WHERE " .
 785                   "img_name='" . wfStrencode( $wgTitle->getDBkey() ) . "'";
 786                 $res = wfQuery( $sql, $fname );
 787
 788                 if ( 0 == wfNumRows( $res ) ) { return; }
 789
 790                 $sk = $wgUser->getSkin();
 791                 $s = $sk->beginImageHistoryList();
 792
 793                 $line = wfFetchObject( $res );
 794                 $s .= $sk->imageHistoryLine( true, $line->img_timestamp,
 795                   $wgTitle->getText(),  $line->img_user,
 796                   $line->img_user_text, $line->img_size, $line->img_description );
 797
 798                 $sql = "SELECT oi_size,oi_description,oi_user," .
 799                   "oi_user_text,oi_timestamp,oi_archive_name FROM oldimage WHERE " .
 800                   "oi_name='" . wfStrencode( $wgTitle->getDBkey() ) . "' " .
 801                   "ORDER BY oi_timestamp DESC";
 802                 $res = wfQuery( $sql, $fname );
 803
 804                 while ( $line = wfFetchObject( $res ) ) {
 805                         $s .= $sk->imageHistoryLine( false, $line->oi_timestamp,
 806                           $line->oi_archive_name, $line->oi_user,
 807                           $line->oi_user_text, $line->oi_size, $line->oi_description );
 808                 }
 809                 $s .= $sk->endImageHistoryList();
 810                 $wgOut->addHTML( $s );
 811         }
 812
 813         function imageLinks()
 814         {
 815                 global $wgUser, $wgOut, $wgTitle;
 816
 817                 $wgOut->addHTML( "<h2>" . wfMsg( "imagelinks" ) . "</h2>\n" );
 818
 819                 $sql = "SELECT il_from FROM imagelinks WHERE il_to='" .
 820                   wfStrencode( $wgTitle->getDBkey() ) . "'";
 821                 $res = wfQuery( $sql, "Article::imageLinks" );
 822
 823                 if ( 0 == wfNumRows( $res ) ) {
 824                         $wgOut->addHtml( "<p>" . wfMsg( "nolinkstoimage" ) . "\n" );
 825                         return;
 826                 }
 827                 $wgOut->addHTML( "<p>" . wfMsg( "linkstoimage" ) .  "\n<ul>" );
 828
 829                 $sk = $wgUser->getSkin();
 830                 while ( $s = wfFetchObject( $res ) ) {
 831                         $name = $s->il_from;
 832                         $link = $sk->makeKnownLink( $name, "" );
 833                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 834                 }
 835                 $wgOut->addHTML( "</ul>\n" );
 836         }
 837
 838         # Add this page to my watchlist
 839
 840         function watch()
 841         {
 842                 global $wgUser, $wgTitle, $wgOut, $wgLang;
 843                 global $wgDeferredUpdateList;
 844
 845                 if ( 0 == $wgUser->getID() ) {
 846                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 847                         return;
 848                 }
 849                 if ( wfReadOnly() ) {
 850                         $wgOut->readOnlyPage();
 851                         return;
 852                 }
 853                 $wgUser->addWatch( $wgTitle );
 854
 855                 $wgOut->setPagetitle( wfMsg( "addedwatch" ) );
 856                 $wgOut->setRobotpolicy( "noindex,follow" );
 857
 858                 $sk = $wgUser->getSkin() ;
 859                 $link = $sk->makeKnownLink ( $wgTitle->getPrefixedText() ) ;
 860
 861                 $text = str_replace( "$1", $link ,
 862                   wfMsg( "addedwatchtext" ) );
 863                 $wgOut->addHTML( $text );
 864
 865                 $up = new UserUpdate();
 866                 array_push( $wgDeferredUpdateList, $up );
 867
 868                 $wgOut->returnToMain( false );
 869         }
 870
 871         function unwatch()
 872         {
 873                 global $wgUser, $wgTitle, $wgOut, $wgLang;
 874                 global $wgDeferredUpdateList;
 875
 876                 if ( 0 == $wgUser->getID() ) {
 877                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 878                         return;
 879                 }
 880                 if ( wfReadOnly() ) {
 881                         $wgOut->readOnlyPage();
 882                         return;
 883                 }
 884                 $wgUser->removeWatch( $wgTitle );
 885
 886                 $wgOut->setPagetitle( wfMsg( "removedwatch" ) );
 887                 $wgOut->setRobotpolicy( "noindex,follow" );
 888
 889                 $sk = $wgUser->getSkin() ;
 890                 $link = $sk->makeKnownLink ( $wgTitle->getPrefixedText() ) ;
 891
 892                 $text = str_replace( "$1", $link ,
 893                   wfMsg( "removedwatchtext" ) );
 894                 $wgOut->addHTML( $text );
 895
 896                 $up = new UserUpdate();
 897                 array_push( $wgDeferredUpdateList, $up );
 898
 899                 $wgOut->returnToMain( false );
 900         }
 901
 902         # This shares a lot of issues (and code) with Recent Changes
 903
 904         function history()
 905         {
 906                 global $wgUser, $wgOut, $wgLang, $wgTitle, $offset, $limit;
 907
 908                 # If page hasn't changed, client can cache this
 909
 910                 $wgOut->checkLastModified( $this->getTimestamp() );
 911                 wfProfileIn( "Article::history" );
 912
 913                 $wgOut->setPageTitle( $wgTitle->getPRefixedText() );
 914                 $wgOut->setSubtitle( wfMsg( "revhistory" ) );
 915                 $wgOut->setArticleFlag( false );
 916                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 917
 918                 if( $wgTitle->getArticleID() == 0 ) {
 919                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 920                         wfProfileOut();
 921                         return;
 922                 }
 923
 924                 $offset = (int)$offset;
 925                 $limit = (int)$limit;
 926                 if( $limit == 0 ) $limit = 50;
 927                 $namespace = $wgTitle->getNamespace();
 928                 $title = $wgTitle->getText();
 929                 $sql = "SELECT old_id,old_user," .
 930                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
 931                   "FROM old USE INDEX (name_title_timestamp) " .
 932                   "WHERE old_namespace={$namespace} AND " .
 933                   "old_title='" . wfStrencode( $wgTitle->getDBkey() ) . "' " .
 934                   "ORDER BY inverse_timestamp LIMIT $offset, $limit";
 935                 $res = wfQuery( $sql, "Article::history" );
 936
 937                 $revs = wfNumRows( $res );
 938                 if( $wgTitle->getArticleID() == 0 ) {
 939                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 940                         wfProfileOut();
 941                         return;
 942                 }
 943
 944                 $sk = $wgUser->getSkin();
 945                 $numbar = wfViewPrevNext(
 946                         $offset, $limit,
 947                         $wgTitle->getPrefixedText(),
 948                         "action=history" );
 949                 $s = $numbar;
 950                 $s .= $sk->beginHistoryList();
 951
 952                 if($offset == 0 )
 953                 $s .= $sk->historyLine( $this->getTimestamp(), $this->getUser(),
 954                   $this->getUserText(), $namespace,
 955                   $title, 0, $this->getComment(),
 956                   ( $this->getMinorEdit() > 0 ) );
 957
 958                 $revs = wfNumRows( $res );
 959                 while ( $line = wfFetchObject( $res ) ) {
 960                         $s .= $sk->historyLine( $line->old_timestamp, $line->old_user,
 961                           $line->old_user_text, $namespace,
 962                           $title, $line->old_id,
 963                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
 964                 }
 965                 $s .= $sk->endHistoryList();
 966                 $s .= $numbar;
 967                 $wgOut->addHTML( $s );
 968                 wfProfileOut();
 969         }
 970
 971         function protect()
 972         {
 973                 global $wgUser, $wgOut, $wgTitle;
 974
 975                 if ( ! $wgUser->isSysop() ) {
 976                         $wgOut->sysopRequired();
 977                         return;
 978                 }
 979                 if ( wfReadOnly() ) {
 980                         $wgOut->readOnlyPage();
 981                         return;
 982                 }
 983                 $id = $wgTitle->getArticleID();
 984                 if ( 0 == $id ) {
 985                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
 986                         return;
 987                 }
 988         $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
 989                   "cur_restrictions='sysop' WHERE cur_id={$id}";
 990                 wfQuery( $sql, "Article::protect" );
 991
 992                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL() ) );
 993         }
 994
 995         function unprotect()
 996         {
 997                 global $wgUser, $wgOut, $wgTitle;
 998
 999                 if ( ! $wgUser->isSysop() ) {
1000                         $wgOut->sysopRequired();
1001                         return;
1002                 }
1003                 if ( wfReadOnly() ) {
1004                         $wgOut->readOnlyPage();
1005                         return;
1006                 }
1007                 $id = $wgTitle->getArticleID();
1008                 if ( 0 == $id ) {
1009                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
1010                         return;
1011                 }
1012                 $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
1013                   "cur_restrictions='' WHERE cur_id={$id}";
1014                 wfQuery( $sql, "Article::unprotect" );
1015
1016                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL() ) );
1017         }
1018
1019         function delete()
1020         {
1021                 global $wgUser, $wgOut, $wgTitle;
1022                 global $wpConfirm, $wpReason, $image, $oldimage;
1023
1024                 # Anybody can delete old revisions of images; only sysops
1025                 # can delete articles and current images
1026
1027                 if ( ( ! $oldimage ) && ( ! $wgUser->isSysop() ) ) {
1028                         $wgOut->sysopRequired();
1029                         return;
1030                 }
1031                 if ( wfReadOnly() ) {
1032                         $wgOut->readOnlyPage();
1033                         return;
1034                 }
1035
1036                 # Better double-check that it hasn't been deleted yet!
1037                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
1038                 if ( $image ) {
1039                         if ( "" == trim( $image ) ) {
1040                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1041                                 return;
1042                         }
1043                         $sub = str_replace( "$1", $image, wfMsg( "deletesub" ) );
1044                 } else {
1045
1046                         if ( ( "" == trim( $wgTitle->getText() ) )
1047                           or ( $wgTitle->getArticleId() == 0 ) ) {
1048                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1049                                 return;
1050                         }
1051                         $sub = str_replace( "$1", $wgTitle->getPrefixedText(),
1052                           wfMsg( "deletesub" ) );
1053
1054                         # determine whether this page has earlier revisions
1055                         # and insert a warning if it does
1056                         # we select the text because it might be useful below
1057                         $sql="SELECT old_text FROM old WHERE old_namespace=0 and old_title='" . wfStrencode($wgTitle->getPrefixedDBkey())."' ORDER BY inverse_timestamp LIMIT 1";
1058                         $res=wfQuery($sql,$fname);
1059                         if( ($old=wfFetchObject($res)) && !$wpConfirm ) {
1060                                 $skin=$wgUser->getSkin();
1061                                 $wgOut->addHTML("<B>".wfMsg("historywarning"));
1062                                 $wgOut->addHTML( $skin->historyLink() ."</B><P>");
1063                         }
1064
1065                         $sql="SELECT cur_text FROM cur WHERE cur_namespace=0 and cur_title='" . wfStrencode($wgTitle->getPrefixedDBkey())."'";
1066                         $res=wfQuery($sql,$fname);
1067                         if( ($s=wfFetchObject($res))) {
1068
1069                                 # if this is a mini-text, we can paste part of it into the deletion reason
1070
1071                                 #if this is empty, an earlier revision may contain "useful" text
1072                                 if($s->cur_text!="") {
1073                                         $text=$s->cur_text;
1074                                 } else {
1075                                         if($old) {
1076                                                 $text=$old->old_text;
1077                                                 $blanked=1;
1078                                         }
1079
1080                                 }
1081
1082                                 $length=strlen($text);
1083
1084                                 # this should not happen, since it is not possible to store an empty, new
1085                                 # page. Let's insert a standard text in case it does, though
1086                                 if($length==0 && !$wpReason) { $wpReason=wfmsg("exblank");}
1087
1088
1089                                 if($length < 500 && !$wpReason) {
1090
1091                                         # comment field=255, let's grep the first 150 to have some user
1092                                         # space left
1093                                         $text=substr($text,0,150);
1094                                         # let's strip out newlines and HTML tags
1095                                         $text=preg_replace("/\"/","'",$text);
1096                                         $text=preg_replace("/\</","&lt;",$text);
1097                                         $text=preg_replace("/\>/","&gt;",$text);
1098                                         $text=preg_replace("/[\n\r]/","",$text);
1099                                         if(!$blanked) {
1100                                                 $wpReason=wfMsg("excontent"). " '".$text;
1101                                         } else {
1102                                                 $wpReason=wfMsg("exbeforeblank") . " '".$text;
1103                                         }
1104                                         if($length>150) { $wpReason .= "..."; } # we've only pasted part of the text
1105                                         $wpReason.="'";
1106                                 }
1107                         }
1108
1109                 }
1110
1111                 # Likewise, deleting old images doesn't require confirmation
1112                 if ( $oldimage || 1 == $wpConfirm ) {
1113                         $this->doDelete();
1114                         return;
1115                 }
1116
1117                 $wgOut->setSubtitle( $sub );
1118                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1119                 $wgOut->addWikiText( wfMsg( "confirmdeletetext" ) );
1120
1121                 $t = $wgTitle->getPrefixedURL();
1122                 $q = "action=delete";
1123
1124                 if ( $image ) {
1125                         $q .= "&image={$image}";
1126                 } else if ( $oldimage ) {
1127                         $q .= "&oldimage={$oldimage}";
1128                 } else {
1129                         $q .= "&title={$t}";
1130                 }
1131                 $formaction = wfEscapeHTML( wfLocalUrl( "", $q ) );
1132                 $confirm = wfMsg( "confirm" );
1133                 $check = wfMsg( "confirmcheck" );
1134                 $delcom = wfMsg( "deletecomment" );
1135
1136                 $wgOut->addHTML( "
1137 <form id=\"deleteconfirm\" method=\"post\" action=\"{$formaction}\">
1138 <table border=0><tr><td align=right>
1139 {$delcom}:</td><td align=left>
1140 <input type=text size=60 name=\"wpReason\" value=\"{$wpReason}\">
1141 </td></tr><tr><td>&nbsp;</td></tr>
1142 <tr><td align=right>
1143 <input type=checkbox name=\"wpConfirm\" value='1'>
1144 </td><td>{$check}</td>
1145 </tr><tr><td>&nbsp;</td><td>
1146 <input type=submit name=\"wpConfirmB\" value=\"{$confirm}\">
1147 </td></tr></table></form>\n" );
1148
1149                 $wgOut->returnToMain( false );
1150         }
1151
1152         function doDelete()
1153         {
1154                 global $wgOut, $wgTitle, $wgUser, $wgLang;
1155                 global $image, $oldimage, $wpReason;
1156                 $fname = "Article::doDelete";
1157
1158                 if ( $image ) {
1159                         $dest = wfImageDir( $image );
1160                         $archive = wfImageDir( $image );
1161                         if ( ! unlink( "{$dest}/{$image}" ) ) {
1162                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
1163                                 return;
1164                         }
1165                         $sql = "DELETE FROM image WHERE img_name='" .
1166                           wfStrencode( $image ) . "'";
1167                         wfQuery( $sql, $fname );
1168
1169                         $sql = "SELECT oi_archive_name FROM oldimage WHERE oi_name='" .
1170                           wfStrencode( $image ) . "'";
1171                         $res = wfQuery( $sql, $fname );
1172
1173                         while ( $s = wfFetchObject( $res ) ) {
1174                                 $this->doDeleteOldImage( $s->oi_archive_name );
1175                         }
1176                         $sql = "DELETE FROM oldimage WHERE oi_name='" .
1177                           wfStrencode( $image ) . "'";
1178                         wfQuery( $sql, $fname );
1179
1180                         # Image itself is now gone, and database is cleaned.
1181                         # Now we remove the image description page.
1182
1183                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
1184                         $this->doDeleteArticle( $nt );
1185
1186                         $deleted = $image;
1187                 } else if ( $oldimage ) {
1188                         $this->doDeleteOldImage( $oldimage );
1189                         $sql = "DELETE FROM oldimage WHERE oi_archive_name='" .
1190                           wfStrencode( $oldimage ) . "'";
1191                         wfQuery( $sql, $fname );
1192
1193                         $deleted = $oldimage;
1194                 } else {
1195                         $this->doDeleteArticle( $wgTitle );
1196                         $deleted = $wgTitle->getPrefixedText();
1197                 }
1198                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1199                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1200
1201                 $sk = $wgUser->getSkin();
1202                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
1203                   Namespace::getWikipedia() ) .
1204                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
1205
1206                 $text = str_replace( "$1" , $deleted, wfMsg( "deletedtext" ) );
1207                 $text = str_replace( "$2", $loglink, $text );
1208
1209                 $wgOut->addHTML( "<p>" . $text );
1210                 $wgOut->returnToMain( false );
1211         }
1212
1213         function doDeleteOldImage( $oldimage )
1214         {
1215                 global $wgOut;
1216
1217                 $name = substr( $oldimage, 15 );
1218                 $archive = wfImageArchiveDir( $name );
1219                 if ( ! unlink( "{$archive}/{$oldimage}" ) ) {
1220                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
1221                 }
1222         }
1223
1224         function doDeleteArticle( $title )
1225         {
1226                 global $wgUser, $wgOut, $wgLang, $wpReason, $wgTitle, $wgDeferredUpdateList;
1227
1228                 $fname = "Article::doDeleteArticle";
1229                 $ns = $title->getNamespace();
1230                 $t = wfStrencode( $title->getDBkey() );
1231                 $id = $title->getArticleID();
1232
1233                 if ( "" == $t ) {
1234                         $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1235                         return;
1236                 }
1237
1238                 $u = new SiteStatsUpdate( 0, 1, -$this->isCountable( $this->getContent( true ) ) );
1239                 array_push( $wgDeferredUpdateList, $u );
1240
1241                 # Move article and history to the "archive" table
1242                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1243                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1244                   "ar_flags) SELECT cur_namespace,cur_title,cur_text,cur_comment," .
1245                   "cur_user,cur_user_text,cur_timestamp,cur_minor_edit,0 FROM cur " .
1246                   "WHERE cur_namespace={$ns} AND cur_title='{$t}'";
1247                 wfQuery( $sql, $fname );
1248
1249                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1250                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1251                   "ar_flags) SELECT old_namespace,old_title,old_text,old_comment," .
1252                   "old_user,old_user_text,old_timestamp,old_minor_edit,old_flags " .
1253                   "FROM old WHERE old_namespace={$ns} AND old_title='{$t}'";
1254                 wfQuery( $sql, $fname );
1255
1256                 # Now that it's safely backed up, delete it
1257
1258                 $sql = "DELETE FROM cur WHERE cur_namespace={$ns} AND " .
1259                   "cur_title='{$t}'";
1260                 wfQuery( $sql, $fname );
1261
1262                 $sql = "DELETE FROM old WHERE old_namespace={$ns} AND " .
1263                   "old_title='{$t}'";
1264                 wfQuery( $sql, $fname );
1265
1266                 $sql = "DELETE FROM recentchanges WHERE rc_namespace={$ns} AND " .
1267                   "rc_title='{$t}'";
1268         wfQuery( $sql, $fname );
1269
1270                 # Finally, clean up the link tables
1271
1272                 if ( 0 != $id ) {
1273                         $t = wfStrencode( $title->getPrefixedDBkey() );
1274                         $sql = "SELECT l_from FROM links WHERE l_to={$id}";
1275                         $res = wfQuery( $sql, $fname );
1276
1277                         $sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
1278             $now = wfTimestampNow();
1279                         $sql2 = "UPDATE cur SET cur_touched='{$now}' WHERE cur_id IN (";
1280                         $first = true;
1281
1282                         while ( $s = wfFetchObject( $res ) ) {
1283                                 $nt = Title::newFromDBkey( $s->l_from );
1284                                 $lid = $nt->getArticleID();
1285
1286                                 if ( ! $first ) { $sql .= ","; $sql2 .= ","; }
1287                                 $first = false;
1288                                 $sql .= "({$lid},'{$t}')";
1289                                 $sql2 .= "{$lid}";
1290                         }
1291                         $sql2 .= ")";
1292                         if ( ! $first ) {
1293                                 wfQuery( $sql, $fname );
1294                                 wfQuery( $sql2, $fname );
1295                         }
1296                         wfFreeResult( $res );
1297
1298                         $sql = "DELETE FROM links WHERE l_to={$id}";
1299                         wfQuery( $sql, $fname );
1300
1301                         $sql = "DELETE FROM links WHERE l_from='{$t}'";
1302                         wfQuery( $sql, $fname );
1303
1304                         $sql = "DELETE FROM imagelinks WHERE il_from='{$t}'";
1305                         wfQuery( $sql, $fname );
1306
1307                         $sql = "DELETE FROM brokenlinks WHERE bl_from={$id}";
1308                         wfQuery( $sql, $fname );
1309                 }
1310
1311                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
1312                 $art = $title->getPrefixedText();
1313                 $wpReason = wfCleanQueryVar( $wpReason );
1314                 $log->addEntry( str_replace( "$1", $art, wfMsg( "deletedarticle" ) ), $wpReason );
1315
1316                 # Clear the cached article id so the interface doesn't act like we exist
1317                 $wgTitle->resetArticleID( 0 );
1318                 $wgTitle->mArticleID = 0;
1319         }
1320
1321         function revert()
1322         {
1323                 global $wgOut;
1324                 global $oldimage;
1325
1326                 if ( strlen( $oldimage ) < 16 ) {
1327                         $wgOut->unexpectedValueError( "oldimage", $oldimage );
1328                         return;
1329                 }
1330                 if ( wfReadOnly() ) {
1331                         $wgOut->readOnlyPage();
1332                         return;
1333                 }
1334                 $name = substr( $oldimage, 15 );
1335
1336                 $dest = wfImageDir( $name );
1337                 $archive = wfImageArchiveDir( $name );
1338                 $curfile = "{$dest}/{$name}";
1339
1340                 if ( ! is_file( $curfile ) ) {
1341                         $wgOut->fileNotFoundError( $curfile );
1342                         return;
1343                 }
1344                 $oldver = wfTimestampNow() . "!{$name}";
1345                 $size = wfGetSQL( "oldimage", "oi_size", "oi_archive_name='" .
1346                   wfStrencode( $oldimage ) . "'" );
1347
1348                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
1349                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
1350                         return;
1351                 }
1352                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
1353                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
1354                 }
1355                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
1356
1357                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1358                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1359                 $wgOut->addHTML( wfMsg( "imagereverted" ) );
1360                 $wgOut->returnToMain( false );
1361         }
1362
1363         function rollback()
1364         {
1365                 global $wgUser, $wgTitle, $wgLang, $wgOut, $from;
1366
1367                 if ( ! $wgUser->isSysop() ) {
1368                         $wgOut->sysopRequired();
1369                         return;
1370                 }
1371
1372                 # Replace all this user's current edits with the next one down
1373                 $tt = wfStrencode( $wgTitle->getDBKey() );
1374                 $n = $wgTitle->getNamespace();
1375
1376                 # Get the last editor
1377                 $sql = "SELECT cur_id,cur_user,cur_user_text,cur_comment FROM cur WHERE cur_title='{$tt}' AND cur_namespace={$n}";
1378                 $res = wfQuery( $sql );
1379                 if( ($x = wfNumRows( $res )) != 1 ) {
1380                         # Something wrong
1381                         $wgOut->addHTML( wfMsg( "notanarticle" ) );
1382                         return;
1383                 }
1384                 $s = wfFetchObject( $res );
1385                 $ut = wfStrencode( $s->cur_user_text );
1386                 $uid = $s->cur_user;
1387                 $pid = $s->cur_id;
1388
1389                 $from = str_replace( '_', ' ', wfCleanQueryVar( $from ) );
1390                 if( $from != $s->cur_user_text ) {
1391                         $wgOut->setPageTitle(wfmsg("rollbackfailed"));
1392                         $wgOut->addWikiText( wfMsg( "alreadyrolled",
1393                                 htmlspecialchars( $wgTitle->getPrefixedText()),
1394                                 htmlspecialchars( $from ),
1395                                 htmlspecialchars( $s->cur_user_text ) ) );
1396                         if($s->cur_comment != "") {
1397                                 $wgOut->addHTML(
1398                                         wfMsg("editcomment",
1399                                         htmlspecialchars( $s->cur_comment ) ) );
1400                                 }
1401                         return;
1402                 }
1403
1404                 # Get the last edit not by this guy
1405                 $sql = "SELECT old_text,old_user,old_user_text
1406                 FROM old USE INDEX (name_title_timestamp)
1407                 WHERE old_namespace={$n} AND old_title='{$tt}'
1408                 AND (old_user <> {$uid} OR old_user_text <> '{$ut}')
1409                 ORDER BY inverse_timestamp LIMIT 1";
1410                 $res = wfQuery( $sql );
1411                 if( wfNumRows( $res ) != 1 ) {
1412                         # Something wrong
1413                         $wgOut->setPageTitle(wfMsg("rollbackfailed"));
1414                         $wgOut->addHTML( wfMsg( "cantrollback" ) );
1415                         return;
1416                 }
1417                 $s = wfFetchObject( $res );
1418
1419                 # Save it!
1420                 $newcomment = str_replace( "$1", $s->old_user_text, wfMsg( "revertpage" ) );
1421                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1422                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1423                 $wgOut->addHTML( "<h2>" . $newcomment . "</h2>\n<hr>\n" );
1424                 $this->updateArticle( $s->old_text, $newcomment, 1, $wgTitle->userIsWatching() );
1425
1426                 $wgOut->returnToMain( false );
1427         }
1428
1429
1430         # Do standard deferred updates after page view
1431
1432         /* private */ function viewUpdates()
1433         {
1434                 global $wgDeferredUpdateList, $wgTitle;
1435
1436                 if ( 0 != $this->getID() ) {
1437                         $u = new ViewCountUpdate( $this->getID() );
1438                         array_push( $wgDeferredUpdateList, $u );
1439                         $u = new SiteStatsUpdate( 1, 0, 0 );
1440                         array_push( $wgDeferredUpdateList, $u );
1441
1442                         $u = new UserTalkUpdate( 0, $wgTitle->getNamespace(),
1443                           $wgTitle->getDBkey() );
1444                         array_push( $wgDeferredUpdateList, $u );
1445                 }
1446         }
1447
1448         # Do standard deferred updates after page edit.
1449         # Every 1000th edit, prune the recent changes table.
1450
1451         /* private */ function editUpdates( $text )
1452         {
1453                 global $wgDeferredUpdateList, $wgTitle;
1454
1455                 wfSeedRandom();
1456                 if ( 0 == mt_rand( 0, 999 ) ) {
1457                         $cutoff = wfUnix2Timestamp( time() - ( 7 * 86400 ) );
1458                         $sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$cutoff}'";
1459                         wfQuery( $sql );
1460                 }
1461                 $id = $this->getID();
1462                 $title = $wgTitle->getPrefixedDBkey();
1463                 $adj = $this->mCountAdjustment;
1464
1465                 if ( 0 != $id ) {
1466                         $u = new LinksUpdate( $id, $title );
1467                         array_push( $wgDeferredUpdateList, $u );
1468                         $u = new SiteStatsUpdate( 0, 1, $adj );
1469                         array_push( $wgDeferredUpdateList, $u );
1470                         $u = new SearchUpdate( $id, $title, $text );
1471                         array_push( $wgDeferredUpdateList, $u );
1472
1473                         $u = new UserTalkUpdate( 1, $wgTitle->getNamespace(),
1474                           $wgTitle->getDBkey() );
1475                         array_push( $wgDeferredUpdateList, $u );
1476                 }
1477         }
1478
1479         /* private */ function setOldSubtitle()
1480         {
1481                 global $wgLang, $wgOut;
1482
1483                 $td = $wgLang->timeanddate( $this->mTimestamp, true );
1484                 $r = str_replace( "$1", "{$td}", wfMsg( "revisionasof" ) );
1485                 $wgOut->setSubtitle( "({$r})" );
1486         }
1487
1488         function blockedIPpage()
1489         {
1490                 global $wgOut, $wgUser, $wgLang;
1491
1492                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
1493                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1494                 $wgOut->setArticleFlag( false );
1495
1496                 $id = $wgUser->blockedBy();
1497                 $reason = $wgUser->blockedFor();
1498
1499                 $name = User::whoIs( $id );
1500                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
1501                   ":{$name}|{$name}]]";
1502
1503                 $text = str_replace( "$1", $link, wfMsg( "blockedtext" ) );
1504                 $text = str_replace( "$2", $reason, $text );
1505                 $wgOut->addWikiText( $text );
1506                 $wgOut->returnToMain( false );
1507         }
1508
1509         # This function is called right before saving the wikitext,
1510         # so we can do things like signatures and links-in-context.
1511
1512         function preSaveTransform( $text )
1513         {
1514                 $s = "";
1515                 while ( "" != $text ) {
1516                         $p = preg_split( "/<\\s*nowiki\\s*>/i", $text, 2 );
1517                         $s .= $this->pstPass2( $p[0] );
1518
1519                         if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $text = ""; }
1520                         else {
1521                                 $q = preg_split( "/<\\/\\s*nowiki\\s*>/i", $p[1], 2 );
1522                                 $s .= "<nowiki>{$q[0]}</nowiki>";
1523                                 $text = $q[1];
1524                         }
1525                 }
1526                 return rtrim( $s );
1527         }
1528
1529         /* private */ function pstPass2( $text )
1530         {
1531                 global $wgUser, $wgLang, $wgTitle, $wgLocaltimezone;
1532
1533                 # Signatures
1534                 #
1535                 $n = $wgUser->getName();
1536                 $k = $wgUser->getOption( "nickname" );
1537                 if ( "" == $k ) { $k = $n; }
1538                 if(isset($wgLocaltimezone)) {
1539                         $oldtz = getenv("TZ"); putenv("TZ=$wgLocaltimezone");
1540                 }
1541                 /* Note: this is an ugly timezone hack for the European wikis */
1542                 $d = $wgLang->timeanddate( date( "YmdHis" ), false ) .
1543                   " (" . date( "T" ) . ")";
1544                 if(isset($wgLocaltimezone)) putenv("TZ=$oldtz");
1545
1546                 $text = preg_replace( "/~~~~/", "[[" . $wgLang->getNsText(
1547                   Namespace::getUser() ) . ":$n|$k]] $d", $text );
1548                 $text = preg_replace( "/~~~/", "[[" . $wgLang->getNsText(
1549                   Namespace::getUser() ) . ":$n|$k]]", $text );
1550
1551                 # Context links: [[|name]] and [[name (context)|]]
1552                 #
1553                 $tc = "[&;%\\-,.\\(\\)' _0-9A-Za-z\\/:\\x80-\\xff]";
1554                 $np = "[&;%\\-,.' _0-9A-Za-z\\/:\\x80-\\xff]"; # No parens
1555                 $conpat = "/^({$np}+) \\(({$tc}+)\\)$/";
1556
1557                 $p1 = "/\[\[({$np}+) \\(({$np}+)\\)\\|]]/";             # [[page (context)|]]
1558                 $p2 = "/\[\[\\|({$tc}+)]]/";                                    # [[|page]]
1559                 $p3 = "/\[\[([A-Za-z _]+):({$np}+)\\|]]/";              # [[namespace:page|]]
1560                 $p4 = "/\[\[([A-Aa-z _]+):({$np}+) \\(({$np}+)\\)\\|]]/";
1561                                                                                                                 # [[ns:page (cont)|]]
1562                 $context = "";
1563                 $t = $wgTitle->getText();
1564                 if ( preg_match( $conpat, $t, $m ) ) {
1565                         $context = $m[2];
1566                 }
1567                 $text = preg_replace( $p4, "[[\\1:\\2 (\\3)|\\2]]", $text );
1568                 $text = preg_replace( $p1, "[[\\1 (\\2)|\\1]]", $text );
1569                 $text = preg_replace( $p3, "[[\\1:\\2|\\2]]", $text );
1570
1571                 if ( "" == $context ) {
1572                         $text = preg_replace( $p2, "[[\\1]]", $text );
1573                 } else {
1574                         $text = preg_replace( $p2, "[[\\1 ({$context})|\\1]]", $text );
1575                 }
1576                 # Replace local image links with new [[image:]] style
1577
1578                 $text = preg_replace(
1579                   "/(^|[^[])http:\/\/(www.|)wikipedia.com\/upload\/" .
1580                   "([a-zA-Z0-9_:.~\%\-]+)\.(png|PNG|jpg|JPG|jpeg|JPEG|gif|GIF)/",
1581                   "\\1[[image:\\3.\\4]]", $text );
1582                 $text = preg_replace(
1583                   "/(^|[^[])http:\/\/(www.|)wikipedia.com\/images\/uploads\/" .
1584                   "([a-zA-Z0-9_:.~\%\-]+)\.(png|PNG|jpg|JPG|jpeg|JPEG|gif|GIF)/",
1585                   "\\1[[image:\\3.\\4]]", $text );
1586
1587                 return $text;
1588         }
1589
1590
1591         /* Caching functions */
1592
1593     function tryFileCache() {
1594                 if($this->isFileCacheable()) {
1595                         if($this->isFileCacheGood()) {
1596                 wfDebug( " tryFileCache() - about to load\n" );
1597                                 $this->loadFromFileCache();
1598                                 exit;
1599                         } else {
1600                     wfDebug( " tryFileCache() - starting buffer\n" );
1601                         ob_start( array(&$this, 'saveToFileCache' ) );
1602                         }
1603                 } else {
1604                         wfDebug( " tryFileCache() - not cacheable\n" );
1605                 }
1606         }
1607
1608         function isFileCacheable() {
1609                 global $wgUser, $wgTitle, $wgUseFileCache, $wgShowIPinHeader;
1610                 global $action, $oldid, $diff, $redirect, $printable;
1611                 return $wgUseFileCache
1612                         and (!$wgShowIPinHeader)
1613                         and ($wgUser->getId() == 0)
1614                         and (!$wgUser->getNewtalk())
1615                         and ($wgTitle->getNamespace != Namespace::getSpecial())
1616                         and ($action == "view")
1617                         and (!isset($oldid))
1618                         and (!isset($diff))
1619                         and (!isset($redirect))
1620                         and (!isset($printable))
1621                         and (!$this->mRedirectedFrom);
1622
1623         }
1624
1625         function fileCacheName() {
1626                 global $wgTitle, $wgFileCacheDirectory, $wgLang;
1627                 if( !$this->mFileCache ) {
1628                         $hash = md5( $key = $wgTitle->getDbkey() );
1629                         if( $wgTitle->getNamespace() )
1630                                 $key = $wgLang->getNsText( $wgTitle->getNamespace() ) . ":" . $key;
1631                         $key = str_replace( ".", "%2E", urlencode( $key ) );
1632                         $hash1 = substr( $hash, 0, 1 );
1633                         $hash2 = substr( $hash, 0, 2 );
1634                         $this->mFileCache = "{$wgFileCacheDirectory}/{$hash1}/{$hash2}/{$key}.html";
1635                         wfDebug( " fileCacheName() - {$this->mFileCache}\n" );
1636                 }
1637                 return $this->mFileCache;
1638         }
1639
1640         function isFileCacheGood() {
1641                 global $wgUser, $wgCacheEpoch;
1642                 if(!file_exists( $fn = $this->fileCacheName() ) ) return false;
1643                 $cachetime = wfUnix2Timestamp( filemtime( $fn ) );
1644                 $good = (( $this->mTouched <= $cachetime ) &&
1645                         ($wgCacheEpoch <= $cachetime ));
1646         wfDebug(" isFileCacheGood() - cachetime $cachetime, touched {$this->mTouched} epoch {$wgCacheEpoch}, good $good\n");
1647                 return $good;
1648         }
1649
1650         function loadFromFileCache() {
1651                 global $wgUseGzip, $wgOut;
1652                 wfDebug(" loadFromFileCache()\n");
1653                 $filename=$this->fileCacheName();
1654                 $filenamegz = "{$filename}.gz";
1655                 $wgOut->sendCacheControl();
1656                 if( $wgUseGzip
1657                         && wfClientAcceptsGzip()
1658                         && file_exists( $filenamegz)
1659                         && ( filemtime( $filenamegz ) >= filemtime( $filename ) ) ) {
1660                         wfDebug("  sending gzip\n");
1661                         header( "Content-Encoding: gzip" );
1662                         header( "Vary: Accept-Encoding" );
1663                         $filename = $filenamegz;
1664                 }
1665                 readfile( $filename );
1666         }
1667
1668         function saveToFileCache( $text ) {
1669                 global $wgUseGzip, $wgCompressByDefault;
1670
1671         wfDebug(" saveToFileCache()\n", false);
1672                 $filename=$this->fileCacheName();
1673                 $mydir2=substr($filename,0,strrpos($filename,"/")); # subdirectory level 2
1674                 $mydir1=substr($mydir2,0,strrpos($mydir2,"/")); # subdirectory level 1
1675                 if(!file_exists($mydir1)) { mkdir($mydir1,0775); } # create if necessary
1676                 if(!file_exists($mydir2)) { mkdir($mydir2,0775); }
1677
1678                 $f = fopen( $filename, "w" );
1679                 if($f) {
1680                         $now = wfTimestampNow();
1681                         fwrite( $f, str_replace( "</html>",
1682                                 "<!-- Cached $now -->\n</html>",
1683                                 $text ) );
1684                         fclose( $f );
1685                         if( $wgUseGzip and $wgCompressByDefault ) {
1686                                 $start = microtime();
1687                                 wfDebug("  saving gzip\n");
1688                                 $gzout = gzencode( str_replace( "</html>",
1689                                                 "<!-- Cached/compressed $now -->\n</html>",
1690                                                 $text ) );
1691                                 if( $gzout === false ) {
1692                                         wfDebug("  failed to gzip compress, sending plaintext\n");
1693                                         return $text;
1694                                 }
1695                                 if( $f = fopen( "{$filename}.gz", "w" ) ) {
1696                                         fwrite( $f, $gzout );
1697                                         fclose( $f );
1698                                         $end = microtime();
1699
1700                                         list($usec1, $sec1) = explode(" ",$start);
1701                                         list($usec2, $sec2) = explode(" ",$end);
1702                                         $interval = ((float)$usec2 + (float)$sec2) -
1703                                                                 ((float)$usec1 + (float)$sec1);
1704                                         wfDebug("  saved gzip in $interval\n");
1705                                 } else {
1706                                         wfDebug("  failed to write gzip, still sending\n" );
1707                                 }
1708                                 if(wfClientAcceptsGzip()) {
1709                                         header( "Content-Encoding: gzip" );
1710                                         header( "Vary: Accept-Encoding" );
1711                                         wfDebug("  sending NEW gzip now...\n" );
1712                                         return $gzout;
1713                                 }
1714                         }
1715                 }
1716                 return $text;
1717         }
1718
1719 }
1720
1721 ?>