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($section!="") {
  81                                                 if($section=="new") { return ""; }
  82
  83                                                 $secs=preg_split("/(^=+.*?=+|^<h[1-6].*?>.*?<\/h[1-6].*?>)/mi",
  84                                                  $this->mContent, -1,
  85                                                  PREG_SPLIT_DELIM_CAPTURE);
  86                                                 if($section==0) {
  87                                                         return trim($secs[0]);
  88                                                 } else {
  89                                                         return trim($secs[$section*2-1] . $secs[$section*2]);
  90                                                 }
  91                                         }
  92                                 }
  93                                 return $this->mContent;
  94                         }
  95                 }
  96         }
  97
  98         function loadContent( $noredir = false )
  99         {
 100                 global $wgOut, $wgTitle;
 101                 global $oldid, $redirect; # From query
 102
 103                 if ( $this->mContentLoaded ) return;
 104                 $fname = "Article::loadContent";
 105
 106                 # Pre-fill content with error message so that if something
 107                 # fails we'll have something telling us what we intended.
 108
 109                 $t = $wgTitle->getPrefixedText();
 110                 if ( $oldid ) { $t .= ",oldid={$oldid}"; }
 111                 if ( $redirect ) { $t .= ",redirect={$redirect}"; }
 112                 $this->mContent = str_replace( "$1", $t, wfMsg( "missingarticle" ) );
 113
 114                 if ( ! $oldid ) {       # Retrieve current version
 115                         $id = $this->getID();
 116                         if ( 0 == $id ) return;
 117
 118                         $sql = "SELECT " .
 119                           "cur_text,cur_timestamp,cur_user,cur_counter,cur_restrictions,cur_touched " .
 120                           "FROM cur WHERE cur_id={$id}";
 121                         $res = wfQuery( $sql, $fname );
 122                         if ( 0 == wfNumRows( $res ) ) { return; }
 123
 124                         $s = wfFetchObject( $res );
 125
 126                         # If we got a redirect, follow it (unless we've been told
 127                         # not to by either the function parameter or the query
 128
 129                         if ( ( "no" != $redirect ) && ( false == $noredir ) &&
 130                           ( preg_match( "/^#redirect/i", $s->cur_text ) ) ) {
 131                                 if ( preg_match( "/\\[\\[([^\\]\\|]+)[\\]\\|]/",
 132                                   $s->cur_text, $m ) ) {
 133                                         $rt = Title::newFromText( $m[1] );
 134
 135                                         # Gotta hand redirects to special pages differently:
 136                                         # Fill the HTTP response "Location" header and ignore
 137                                         # the rest of the page we're on.
 138
 139                                         if ( $rt->getInterwiki() != "" ) {
 140                                                 $wgOut->redirect( $rt->getFullURL() ) ;
 141                                                 return;
 142                                         }
 143                                         if ( $rt->getNamespace() == Namespace::getSpecial() ) {
 144                                                 $wgOut->redirect( wfLocalUrl(
 145                                                   $rt->getPrefixedURL() ) );
 146                                                 return;
 147                                         }
 148                                         $rid = $rt->getArticleID();
 149                                         if ( 0 != $rid ) {
 150                                                 $sql = "SELECT cur_text,cur_timestamp,cur_user," .
 151                                                   "cur_counter,cur_touched FROM cur WHERE cur_id={$rid}";
 152                                                 $res = wfQuery( $sql, $fname );
 153
 154                                                 if ( 0 != wfNumRows( $res ) ) {
 155                                                         $this->mRedirectedFrom = $wgTitle->getPrefixedText();
 156                                                         $wgTitle = $rt;
 157                                                         $s = wfFetchObject( $res );
 158                                                 }
 159                                         }
 160                                 }
 161                         }
 162                         $this->mContent = $s->cur_text;
 163                         $this->mUser = $s->cur_user;
 164                         $this->mCounter = $s->cur_counter;
 165                         $this->mTimestamp = $s->cur_timestamp;
 166                         $this->mTouched = $s->cur_touched;
 167                         $wgTitle->mRestrictions = explode( ",", trim( $s->cur_restrictions ) );
 168                         $wgTitle->mRestrictionsLoaded = true;
 169                         wfFreeResult( $res );
 170                 } else { # oldid set, retrieve historical version
 171                         $sql = "SELECT old_text,old_timestamp,old_user FROM old " .
 172                           "WHERE old_id={$oldid}";
 173                         $res = wfQuery( $sql, $fname );
 174                         if ( 0 == wfNumRows( $res ) ) { return; }
 175
 176                         $s = wfFetchObject( $res );
 177                         $this->mContent = $s->old_text;
 178                         $this->mUser = $s->old_user;
 179                         $this->mCounter = 0;
 180                         $this->mTimestamp = $s->old_timestamp;
 181                         wfFreeResult( $res );
 182                 }
 183                 $this->mContentLoaded = true;
 184         }
 185
 186         function getID() { global $wgTitle; return $wgTitle->getArticleID(); }
 187
 188         function getCount()
 189         {
 190                 if ( -1 == $this->mCounter ) {
 191                         $id = $this->getID();
 192                         $this->mCounter = wfGetSQL( "cur", "cur_counter", "cur_id={$id}" );
 193                 }
 194                 return $this->mCounter;
 195         }
 196
 197         # Would the given text make this article a "good" article (i.e.,
 198         # suitable for including in the article count)?
 199
 200         function isCountable( $text )
 201         {
 202                 global $wgTitle, $wgUseCommaCount;
 203
 204                 if ( 0 != $wgTitle->getNamespace() ) { return 0; }
 205                 if ( preg_match( "/^#redirect/i", $text ) ) { return 0; }
 206                 $token = ($wgUseCommaCount ? "," : "[[" );
 207                 if ( false === strstr( $text, $token ) ) { return 0; }
 208                 return 1;
 209         }
 210
 211         # Load the field related to the last edit time of the article.
 212         # This isn't necessary for all uses, so it's only done if needed.
 213
 214         /* private */ function loadLastEdit()
 215         {
 216                 global $wgOut;
 217                 if ( -1 != $this->mUser ) return;
 218
 219                 $sql = "SELECT cur_user,cur_user_text,cur_timestamp," .
 220                   "cur_comment,cur_minor_edit FROM cur WHERE " .
 221                   "cur_id=" . $this->getID();
 222                 $res = wfQuery( $sql, "Article::loadLastEdit" );
 223
 224                 if ( wfNumRows( $res ) > 0 ) {
 225                         $s = wfFetchObject( $res );
 226                         $this->mUser = $s->cur_user;
 227                         $this->mUserText = $s->cur_user_text;
 228                         $this->mTimestamp = $s->cur_timestamp;
 229                         $this->mComment = $s->cur_comment;
 230                         $this->mMinorEdit = $s->cur_minor_edit;
 231                 }
 232         }
 233
 234         function getTimestamp()
 235         {
 236                 $this->loadLastEdit();
 237                 return $this->mTimestamp;
 238         }
 239
 240         function getUser()
 241         {
 242                 $this->loadLastEdit();
 243                 return $this->mUser;
 244         }
 245
 246         function getUserText()
 247         {
 248                 $this->loadLastEdit();
 249                 return $this->mUserText;
 250         }
 251
 252         function getComment()
 253         {
 254                 $this->loadLastEdit();
 255                 return $this->mComment;
 256         }
 257
 258         function getMinorEdit()
 259         {
 260                 $this->loadLastEdit();
 261                 return $this->mMinorEdit;
 262         }
 263
 264         # This is the default action of the script: just view the page of
 265         # the given title.
 266
 267         function view()
 268         {
 269                 global $wgUser, $wgOut, $wgTitle, $wgLang;
 270                 global $oldid, $diff; # From query
 271                 global $wgLinkCache;
 272                 wfProfileIn( "Article::view" );
 273
 274                 $wgOut->setArticleFlag( true );
 275                 $wgOut->setRobotpolicy( "index,follow" );
 276
 277                 # If we got diff and oldid in the query, we want to see a
 278                 # diff page instead of the article.
 279
 280                 if ( isset( $diff ) ) {
 281                         $wgOut->setPageTitle( $wgTitle->getPrefixedText() );
 282                         $de = new DifferenceEngine( $oldid, $diff );
 283                         $de->showDiffPage();
 284                         wfProfileOut();
 285                         return;
 286                 }
 287                 $text = $this->getContent(); # May change wgTitle!
 288                 $wgOut->setPageTitle( $wgTitle->getPrefixedText() );
 289                 $wgOut->setHTMLTitle( $wgTitle->getPrefixedText() .
 290                   " - " . wfMsg( "wikititlesuffix" ) );
 291
 292                 # We're looking at an old revision
 293
 294                 if ( $oldid ) {
 295                         $this->setOldSubtitle();
 296                         $wgOut->setRobotpolicy( "noindex,follow" );
 297                 }
 298                 if ( "" != $this->mRedirectedFrom ) {
 299                         $sk = $wgUser->getSkin();
 300                         $redir = $sk->makeKnownLink( $this->mRedirectedFrom, "",
 301                           "redirect=no" );
 302                         $s = str_replace( "$1", $redir, wfMsg( "redirectedfrom" ) );
 303                         $wgOut->setSubtitle( $s );
 304                 }
 305                 $wgOut->checkLastModified( $this->mTouched );
 306                 $this->tryFileCache();
 307                 $wgLinkCache->preFill( $wgTitle );
 308                 $wgOut->addWikiText( $text );
 309
 310                 # If the article we've just shown is in the "Image" namespace,
 311                 # follow it with the history list and link list for the image
 312                 # it describes.
 313
 314                 if ( Namespace::getImage() == $wgTitle->getNamespace() ) {
 315                         $this->imageHistory();
 316                         $this->imageLinks();
 317                 }
 318                 $this->viewUpdates();
 319                 wfProfileOut();
 320         }
 321
 322         # This is the function that gets called for "action=edit".
 323
 324         function edit()
 325         {
 326                 global $wgOut, $wgUser, $wgTitle;
 327                 global $wpTextbox1, $wpSummary, $wpSave, $wpPreview;
 328                 global $wpMinoredit, $wpEdittime, $wpTextbox2;
 329
 330                 $fields = array( "wpTextbox1", "wpSummary", "wpTextbox2" );
 331                 wfCleanFormFields( $fields );
 332
 333                 if ( ! $wgTitle->userCanEdit() ) {
 334                         $this->view();
 335                         return;
 336                 }
 337                 if ( $wgUser->isBlocked() ) {
 338                         $this->blockedIPpage();
 339                         return;
 340                 }
 341                 if ( wfReadOnly() ) {
 342                         if( isset( $wpSave ) or isset( $wpPreview ) ) {
 343                                 $this->editForm( "preview" );
 344                         } else {
 345                                 $wgOut->readOnlyPage();
 346                         }
 347                         return;
 348                 }
 349                 if ( $_SERVER['REQUEST_METHOD'] != "POST" ) unset( $wpSave );
 350                 if ( isset( $wpSave ) ) {
 351                         $this->editForm( "save" );
 352                 } else if ( isset( $wpPreview ) ) {
 353                         $this->editForm( "preview" );
 354                 } else { # First time through
 355                         $this->editForm( "initial" );
 356                 }
 357         }
 358
 359         # Since there is only one text field on the edit form,
 360         # pressing <enter> will cause the form to be submitted, but
 361         # the submit button value won't appear in the query, so we
 362         # Fake it here before going back to edit().  This is kind of
 363         # ugly, but it helps some old URLs to still work.
 364
 365         function submit()
 366         {
 367                 global $wpSave, $wpPreview;
 368                 if ( ! isset( $wpPreview ) ) { $wpSave = 1; }
 369
 370                 $this->edit();
 371         }
 372
 373         # The edit form is self-submitting, so that when things like
 374         # preview and edit conflicts occur, we get the same form back
 375         # with the extra stuff added.  Only when the final submission
 376         # is made and all is well do we actually save and redirect to
 377         # the newly-edited page.
 378
 379         function editForm( $formtype )
 380         {
 381                 global $wgOut, $wgUser, $wgTitle;
 382                 global $wpTextbox1, $wpSummary, $wpWatchthis;
 383                 global $wpSave, $wpPreview;
 384                 global $wpMinoredit, $wpEdittime, $wpTextbox2, $wpSection;
 385                 global $oldid, $redirect, $section;
 386                 global $wgLang;
 387
 388                 if(isset($wpSection)) { $section=$wpSection; }
 389
 390                 $sk = $wgUser->getSkin();
 391                 $isConflict = false;
 392                 $wpTextbox1 = rtrim ( $wpTextbox1 ) ; # To avoid text getting longer on each preview
 393
 394                 if(!$wgTitle->getArticleID()) { # new article
 395
 396                         $wgOut->addWikiText(wfmsg("newarticletext"));
 397
 398                 }
 399
 400                 # Attempt submission here.  This will check for edit conflicts,
 401                 # and redundantly check for locked database, blocked IPs, etc.
 402                 # that edit() already checked just in case someone tries to sneak
 403                 # in the back door with a hand-edited submission URL.
 404
 405                 if ( "save" == $formtype ) {
 406                         if ( $wgUser->isBlocked() ) {
 407                                 $this->blockedIPpage();
 408                                 return;
 409                         }
 410                         if ( wfReadOnly() ) {
 411                                 $wgOut->readOnlyPage();
 412                                 return;
 413                         }
 414                         # If article is new, insert it.
 415
 416                         $aid = $wgTitle->getArticleID();
 417                         if ( 0 == $aid ) {
 418                                 # we need to strip Windoze linebreaks because some browsers
 419                                 # append them and the string comparison fails
 420                                 if ( ( "" == $wpTextbox1 ) ||
 421                                   ( wfMsg( "newarticletext" ) == rtrim( preg_replace("/\r/","",$wpTextbox1) ) ) ) {
 422                                         $wgOut->redirect(  wfLocalUrl(
 423                                           $wgTitle->getPrefixedURL() ) );
 424                                         return;
 425                                 }
 426                                 $this->mCountAdjustment = $this->isCountable( $wpTextbox1 );
 427                                 $this->insertNewArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis );
 428                                 return;
 429                         }
 430                         # Article exists. Check for edit conflict.
 431                         # Don't check for conflict when appending a comment - this should always work
 432
 433                         $this->clear(); # Force reload of dates, etc.
 434                         if ( $section!="new" && ( $this->getTimestamp() != $wpEdittime ) ) { $isConflict = true; }
 435                         $u = $wgUser->getID();
 436
 437                         # Supress edit conflict with self
 438
 439                         if ( ( 0 != $u ) && ( $this->getUser() == $u ) ) {
 440                                 $isConflict = false;
 441                         }
 442                         if ( ! $isConflict ) {
 443                                 # All's well: update the article here
 444                                 $this->updateArticle( $wpTextbox1, $wpSummary, $wpMinoredit, $wpWatchthis, $wpSection );
 445                                 return;
 446                         }
 447                 }
 448                 # First time through: get contents, set time for conflict
 449                 # checking, etc.
 450
 451                 if ( "initial" == $formtype ) {
 452                         $wpEdittime = $this->getTimestamp();
 453                         $wpTextbox1 = $this->getContent(true);
 454                         $wpSummary = "";
 455                 }
 456                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 457                 $wgOut->setArticleFlag( false );
 458
 459                 if ( $isConflict ) {
 460                         $s = str_replace( "$1", $wgTitle->getPrefixedText(),
 461                           wfMsg( "editconflict" ) );
 462                         $wgOut->setPageTitle( $s );
 463                         $wgOut->addHTML( wfMsg( "explainconflict" ) );
 464
 465                         $wpTextbox2 = $wpTextbox1;
 466                         $wpTextbox1 = $this->getContent(true);
 467                         $wpEdittime = $this->getTimestamp();
 468                 } else {
 469                         $s = str_replace( "$1", $wgTitle->getPrefixedText(),
 470                           wfMsg( "editing" ) );
 471
 472                         if($section!="") {
 473                                 if($section=="new") {
 474                                         $s.=wfMsg("commentedit");
 475                                 } else {
 476                                         $s.=wfMsg("sectionedit");
 477                                 }
 478                         }
 479                         $wgOut->setPageTitle( $s );
 480                         if ( $oldid ) {
 481                                 $this->setOldSubtitle();
 482                                 $wgOut->addHTML( wfMsg( "editingold" ) );
 483                         }
 484                 }
 485
 486                 if( wfReadOnly() ) {
 487                         $wgOut->addHTML( "<strong>" .
 488                                 wfMsg( "readonlywarning" ) .
 489                                 "</strong>" );
 490                 }
 491                 if( $wgTitle->isProtected() ) {
 492                         $wgOut->addHTML( "<strong>" . wfMsg( "protectedpagewarning" ) .
 493                           "</strong><br />\n" );
 494                 }
 495
 496                 $kblength = (int)(strlen( $wpTextbox1 ) / 1024);
 497                 if( $kblength > 29 ) {
 498                         $wgOut->addHTML( "<strong>" .
 499                                 str_replace( '$1', $kblength , wfMsg( "longpagewarning" ) )
 500                                 . "</strong>" );
 501                 }
 502
 503                 $rows = $wgUser->getOption( "rows" );
 504                 $cols = $wgUser->getOption( "cols" );
 505
 506                 $ew = $wgUser->getOption( "editwidth" );
 507                 if ( $ew ) $ew = " style=\"width:100%\"";
 508                 else $ew = "" ;
 509
 510                 $q = "action=submit";
 511                 if ( "no" == $redirect ) { $q .= "&redirect=no"; }
 512                 $action = wfEscapeHTML( wfLocalUrl( $wgTitle->getPrefixedURL(), $q ) );
 513
 514                 $summary = wfMsg( "summary" );
 515                 $subject = wfMsg("subject");
 516                 $minor = wfMsg( "minoredit" );
 517                 $watchthis = wfMsg ("watchthis");
 518                 $save = wfMsg( "savearticle" );
 519                 $prev = wfMsg( "showpreview" );
 520
 521                 $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedURL(),
 522                   wfMsg( "cancel" ) );
 523                 $edithelp = $sk->makeKnownLink( wfMsg( "edithelppage" ),
 524                   wfMsg( "edithelp" ) );
 525                 $copywarn = str_replace( "$1", $sk->makeKnownLink(
 526                   wfMsg( "copyrightpage" ) ), wfMsg( "copyrightwarning" ) );
 527
 528                 $wpTextbox1 = wfEscapeHTML( $wpTextbox1 );
 529                 $wpTextbox2 = wfEscapeHTML( $wpTextbox2 );
 530                 $wpSummary = wfEscapeHTML( $wpSummary );
 531
 532                 // activate checkboxes if user wants them to be always active
 533                 if (!$wpPreview && $wgUser->getOption("watchdefault")) $wpWatchthis=1;
 534                 if (!$wpPreview && $wgUser->getOption("minordefault")) $wpMinoredit=1;
 535
 536                 // activate checkbox also if user is already watching the page,
 537                 // require wpWatchthis to be unset so that second condition is not
 538                 // checked unnecessarily
 539                 if (!$wpWatchthis && !$wpPreview && $wgTitle->userIsWatching()) $wpWatchthis=1;
 540
 541                 if ( 0 != $wgUser->getID() ) {
 542                         $checkboxhtml=
 543                         "<input tabindex=3 type=checkbox value=1 name='wpMinoredit'".($wpMinoredit?" checked":"").">{$minor}".
 544                         "<input tabindex=4 type=checkbox name='wpWatchthis'".($wpWatchthis?" checked":"").">{$watchthis}<br>";
 545
 546                 } else {
 547                         $checkboxhtml="";
 548                 }
 549
 550
 551                 if ( "preview" == $formtype) {
 552
 553                         $previewhead="<h2>" . wfMsg( "preview" ) . "</h2>\n<p><large><center><font color=\"#cc0000\">" .
 554                         wfMsg( "note" ) . wfMsg( "previewnote" ) . "</font></center></large><P>\n";
 555                         if ( $isConflict ) {
 556                                 $previewhead.="<h2>" . wfMsg( "previewconflict" ) .
 557                                   "</h2>\n";
 558                         }
 559                         $previewtext = wfUnescapeHTML( $wpTextbox1 );
 560
 561                         if($wgUser->getOption("previewontop")) {
 562                                 $wgOut->addHTML($previewhead);
 563                                 $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) ."\n\n");
 564                         }
 565                         $wgOut->addHTML( "<br clear=\"all\" />\n" );
 566                 }
 567
 568                 # if this is a comment, show a subject line at the top, which is also the edit summary.
 569                 # Otherwise, show a summary field at the bottom
 570                 if($section=="new") {
 571
 572                         $commentsubject="{$subject}: <input tabindex=1 type=text value=\"{$wpSummary}\" name=\"wpSummary\" maxlength=200 size=60><br>";
 573                 } else {
 574
 575                         $editsummary="{$summary}: <input tabindex=3 type=text value=\"{$wpSummary}\" name=\"wpSummary\" maxlength=200 size=60><br>";
 576                 }
 577
 578                 $wgOut->addHTML( "
 579 <form id=\"editform\" name=\"editform\" method=\"post\" action=\"$action\"
 580 enctype=\"application/x-www-form-urlencoded\">
 581 {$commentsubject}
 582 <textarea tabindex=2 name=\"wpTextbox1\" rows={$rows}
 583 cols={$cols}{$ew} wrap=\"virtual\">" .
 584 $wgLang->recodeForEdit( $wpTextbox1 ) .
 585 "
 586 </textarea>
 587 <br>{$editsummary}
 588 {$checkboxhtml}
 589 <input tabindex=5 type=submit value=\"{$save}\" name=\"wpSave\">
 590 <input tabindex=6 type=submit value=\"{$prev}\" name=\"wpPreview\">
 591 <em>{$cancel}</em> | <em>{$edithelp}</em>
 592 <br><br>{$copywarn}
 593 <input type=hidden value=\"{$section}\" name=\"wpSection\">
 594 <input type=hidden value=\"{$wpEdittime}\" name=\"wpEdittime\">\n" );
 595
 596                 if ( $isConflict ) {
 597                         $wgOut->addHTML( "<h2>" . wfMsg( "yourdiff" ) . "</h2>\n" );
 598                         DifferenceEngine::showDiff( $wpTextbox2, $wpTextbox1,
 599                           wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 600
 601                         $wgOut->addHTML( "<h2>" . wfMsg( "yourtext" ) . "</h2>
 602 <textarea tabindex=6 name=\"wpTextbox2\" rows={$rows} cols={$cols} wrap=virtual>"
 603 . $wgLang->recodeForEdit( $wpTextbox2 ) .
 604 "
 605 </textarea>" );
 606                 }
 607                 $wgOut->addHTML( "</form>\n" );
 608                 if($formtype =="preview" && !$wgUser->getOption("previewontop")) {
 609                         $wgOut->addHTML($previewhead);
 610                         $wgOut->addWikiText( $this->preSaveTransform( $previewtext ) );
 611                 }
 612
 613         }
 614
 615         # Theoretically we could defer these whole insert and update
 616         # functions for after display, but that's taking a big leap
 617         # of faith, and we want to be able to report database
 618         # errors at some point.
 619
 620         /* private */ function insertNewArticle( $text, $summary, $isminor, $watchthis )
 621         {
 622                 global $wgOut, $wgUser, $wgTitle, $wgLinkCache;
 623                 $fname = "Article::insertNewArticle";
 624
 625                 $ns = $wgTitle->getNamespace();
 626                 $ttl = $wgTitle->getDBkey();
 627                 $text = $this->preSaveTransform( $text );
 628                 if ( preg_match( "/^#redirect/i", $text ) ) { $redir = 1; }
 629                 else { $redir = 0; }
 630
 631                 $now = wfTimestampNow();
 632                 $won = wfInvertTimestamp( $now );
 633                 wfSeedRandom();
 634                 $rand = number_format( mt_rand() / mt_getrandmax(), 12, ".", "" );
 635                 $sql = "INSERT INTO cur (cur_namespace,cur_title,cur_text," .
 636                   "cur_comment,cur_user,cur_timestamp,cur_minor_edit,cur_counter," .
 637                   "cur_restrictions,cur_user_text,cur_is_redirect," .
 638                   "cur_is_new,cur_random,cur_touched,inverse_timestamp) VALUES ({$ns},'" . wfStrencode( $ttl ) . "', '" .
 639                   wfStrencode( $text ) . "', '" .
 640                   wfStrencode( $summary ) . "', '" .
 641                   $wgUser->getID() . "', '{$now}', " .
 642                   ( $isminor ? 1 : 0 ) . ", 0, '', '" .
 643                   wfStrencode( $wgUser->getName() ) . "', $redir, 1, $rand, '{$now}', '{$won}')";
 644                 $res = wfQuery( $sql, $fname );
 645
 646                 $newid = wfInsertId();
 647                 $wgTitle->resetArticleID( $newid );
 648
 649                 $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 650                   "rc_namespace,rc_title,rc_new,rc_minor,rc_cur_id,rc_user," .
 651                   "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid,rc_bot) VALUES (" .
 652                   "'{$now}','{$now}',{$ns},'" . wfStrencode( $ttl ) . "',1," .
 653                   ( $isminor ? 1 : 0 ) . ",{$newid}," . $wgUser->getID() . ",'" .
 654                   wfStrencode( $wgUser->getName() ) . "','" .
 655                   wfStrencode( $summary ) . "',0,0," .
 656                   ( $wgUser->isBot() ? 1 : 0 ) . ")";
 657                 wfQuery( $sql, $fname );
 658                 if ($watchthis) {
 659                         if(!$wgTitle->userIsWatching()) $this->watch();
 660                 } else {
 661                         if ( $wgTitle->userIsWatching() ) {
 662                                 $this->unwatch();
 663                         }
 664                 }
 665
 666                 $this->showArticle( $text, wfMsg( "newarticle" ) );
 667         }
 668
 669         function updateArticle( $text, $summary, $minor, $watchthis, $section )
 670         {
 671                 global $wgOut, $wgUser, $wgTitle, $wgLinkCache;
 672                 global $wgDBtransactions;
 673                 $fname = "Article::updateArticle";
 674
 675                 // insert updated section into old text if we have only edited part
 676                 // of the article
 677                 if ($section != "") {
 678                         $oldtext=$this->getContent();
 679                         if($section=="new") {
 680                                 if($summary) $summary="== {$summary} ==\n\n";
 681                                 $text=$oldtext."\n\n".$summary.$text;
 682                         } else {
 683                                 $secs=preg_split("/(^=+.*?=+|^<h[1-6].*?>.*?<\/h[1-6].*?>)/mi",
 684                                   $oldtext,-1,PREG_SPLIT_DELIM_CAPTURE);
 685                                 $secs[$section*2]=$text."\n\n"; // replace with edited
 686                                 if($section) { $secs[$section*2-1]=""; } // erase old headline
 687                                 $text=join("",$secs);
 688                         }
 689                 }
 690                 if ( $this->mMinorEdit ) { $me1 = 1; } else { $me1 = 0; }
 691                 if ( $minor ) { $me2 = 1; } else { $me2 = 0; }
 692                 if ( preg_match( "/^(#redirect[^\\n]+)/i", $text, $m ) ) {
 693                         $redir = 1;
 694                         $text = $m[1] . "\n"; # Remove all content but redirect
 695                 }
 696                 else { $redir = 0; }
 697                 $this->loadLastEdit();
 698
 699                 $text = $this->preSaveTransform( $text );
 700
 701                 # Update article, but only if changed.
 702
 703                 if( $wgDBtransactions ) {
 704                         $sql = "BEGIN";
 705                         wfQuery( $sql );
 706                 }
 707                 $oldtext = $this->getContent( true );
 708
 709                 if ( 0 != strcmp( $text, $oldtext ) ) {
 710                         $this->mCountAdjustment = $this->isCountable( $text )
 711                           - $this->isCountable( $oldtext );
 712
 713                         $sql = "INSERT INTO old (old_namespace,old_title,old_text," .
 714                           "old_comment,old_user,old_user_text,old_timestamp," .
 715                           "old_minor_edit,inverse_timestamp) VALUES (" .
 716                           $wgTitle->getNamespace() . ", '" .
 717                           wfStrencode( $wgTitle->getDBkey() ) . "', '" .
 718                           wfStrencode( $oldtext ) . "', '" .
 719                           wfStrencode( $this->getComment() ) . "', " .
 720                           $this->getUser() . ", '" .
 721                           wfStrencode( $this->getUserText() ) . "', '" .
 722                           $this->getTimestamp() . "', " . $me1 . ", '" .
 723                           wfInvertTimestamp( $this->getTimestamp() ) . "')";
 724                         $res = wfQuery( $sql, $fname );
 725                         $oldid = wfInsertID( $res );
 726
 727                         $now = wfTimestampNow();
 728                         $won = wfInvertTimestamp( $now );
 729                         $sql = "UPDATE cur SET cur_text='" . wfStrencode( $text ) .
 730                           "',cur_comment='" .  wfStrencode( $summary ) .
 731                           "',cur_minor_edit={$me2}, cur_user=" . $wgUser->getID() .
 732                           ",cur_timestamp='{$now}',cur_user_text='" .
 733                           wfStrencode( $wgUser->getName() ) .
 734                           "',cur_is_redirect={$redir}, cur_is_new=0, cur_touched='{$now}', inverse_timestamp='{$won}' " .
 735                           "WHERE cur_id=" . $this->getID();
 736                         wfQuery( $sql, $fname );
 737
 738                         $sql = "INSERT INTO recentchanges (rc_timestamp,rc_cur_time," .
 739                           "rc_namespace,rc_title,rc_new,rc_minor,rc_bot,rc_cur_id,rc_user," .
 740                           "rc_user_text,rc_comment,rc_this_oldid,rc_last_oldid) VALUES (" .
 741                           "'{$now}','{$now}'," . $wgTitle->getNamespace() . ",'" .
 742                           wfStrencode( $wgTitle->getDBkey() ) . "',0,{$me2}," .
 743                           ( $wgUser->isBot() ? 1 : 0 ) . "," .
 744                           $this->getID() . "," . $wgUser->getID() . ",'" .
 745                           wfStrencode( $wgUser->getName() ) . "','" .
 746                           wfStrencode( $summary ) . "',0,{$oldid})";
 747                         wfQuery( $sql, $fname );
 748
 749                         $sql = "UPDATE recentchanges SET rc_this_oldid={$oldid} " .
 750                           "WHERE rc_namespace=" . $wgTitle->getNamespace() . " AND " .
 751                           "rc_title='" . wfStrencode( $wgTitle->getDBkey() ) . "' AND " .
 752                           "rc_timestamp='" . $this->getTimestamp() . "'";
 753                         wfQuery( $sql, $fname );
 754
 755                         $sql = "UPDATE recentchanges SET rc_cur_time='{$now}' " .
 756                           "WHERE rc_cur_id=" . $this->getID();
 757                         wfQuery( $sql, $fname );
 758                 }
 759                 if( $wgDBtransactions ) {
 760                         $sql = "COMMIT";
 761                         wfQuery( $sql );
 762                 }
 763
 764                 if ($watchthis) {
 765                         if (!$wgTitle->userIsWatching()) $this->watch();
 766                 } else {
 767                         if ( $wgTitle->userIsWatching() ) {
 768                                 $this->unwatch();
 769                         }
 770                 }
 771
 772                 $this->showArticle( $text, wfMsg( "updated" ) );
 773         }
 774
 775         # After we've either updated or inserted the article, update
 776         # the link tables and redirect to the new page.
 777
 778         function showArticle( $text, $subtitle )
 779         {
 780                 global $wgOut, $wgTitle, $wgUser, $wgLinkCache, $wgUseBetterLinksUpdate;
 781
 782                 $wgLinkCache = new LinkCache();
 783
 784                 # Get old version of link table to allow incremental link updates
 785                 if ( $wgUseBetterLinksUpdate ) {
 786                         $wgLinkCache->preFill( $wgTitle );
 787                         $wgLinkCache->clear();
 788                 }
 789
 790                 # Now update the link cache by parsing the text
 791                 $wgOut->addWikiText( $text );
 792
 793                 $this->editUpdates( $text );
 794                 if( preg_match( "/^#redirect/i", $text ) )
 795                         $r = "redirect=no";
 796                 else
 797                         $r = "";
 798                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL(), $r ) );
 799         }
 800
 801         # If the page we've just displayed is in the "Image" namespace,
 802         # we follow it with an upload history of the image and its usage.
 803
 804         function imageHistory()
 805         {
 806                 global $wgUser, $wgOut, $wgLang, $wgTitle;
 807                 $fname = "Article::imageHistory";
 808
 809                 $sql = "SELECT img_size,img_description,img_user," .
 810                   "img_user_text,img_timestamp FROM image WHERE " .
 811                   "img_name='" . wfStrencode( $wgTitle->getDBkey() ) . "'";
 812                 $res = wfQuery( $sql, $fname );
 813
 814                 if ( 0 == wfNumRows( $res ) ) { return; }
 815
 816                 $sk = $wgUser->getSkin();
 817                 $s = $sk->beginImageHistoryList();
 818
 819                 $line = wfFetchObject( $res );
 820                 $s .= $sk->imageHistoryLine( true, $line->img_timestamp,
 821                   $wgTitle->getText(),  $line->img_user,
 822                   $line->img_user_text, $line->img_size, $line->img_description );
 823
 824                 $sql = "SELECT oi_size,oi_description,oi_user," .
 825                   "oi_user_text,oi_timestamp,oi_archive_name FROM oldimage WHERE " .
 826                   "oi_name='" . wfStrencode( $wgTitle->getDBkey() ) . "' " .
 827                   "ORDER BY oi_timestamp DESC";
 828                 $res = wfQuery( $sql, $fname );
 829
 830                 while ( $line = wfFetchObject( $res ) ) {
 831                         $s .= $sk->imageHistoryLine( false, $line->oi_timestamp,
 832                           $line->oi_archive_name, $line->oi_user,
 833                           $line->oi_user_text, $line->oi_size, $line->oi_description );
 834                 }
 835                 $s .= $sk->endImageHistoryList();
 836                 $wgOut->addHTML( $s );
 837         }
 838
 839         function imageLinks()
 840         {
 841                 global $wgUser, $wgOut, $wgTitle;
 842
 843                 $wgOut->addHTML( "<h2>" . wfMsg( "imagelinks" ) . "</h2>\n" );
 844
 845                 $sql = "SELECT il_from FROM imagelinks WHERE il_to='" .
 846                   wfStrencode( $wgTitle->getDBkey() ) . "'";
 847                 $res = wfQuery( $sql, "Article::imageLinks" );
 848
 849                 if ( 0 == wfNumRows( $res ) ) {
 850                         $wgOut->addHtml( "<p>" . wfMsg( "nolinkstoimage" ) . "\n" );
 851                         return;
 852                 }
 853                 $wgOut->addHTML( "<p>" . wfMsg( "linkstoimage" ) .  "\n<ul>" );
 854
 855                 $sk = $wgUser->getSkin();
 856                 while ( $s = wfFetchObject( $res ) ) {
 857                         $name = $s->il_from;
 858                         $link = $sk->makeKnownLink( $name, "" );
 859                         $wgOut->addHTML( "<li>{$link}</li>\n" );
 860                 }
 861                 $wgOut->addHTML( "</ul>\n" );
 862         }
 863
 864         # Add this page to my watchlist
 865
 866         function watch()
 867         {
 868                 global $wgUser, $wgTitle, $wgOut, $wgLang;
 869                 global $wgDeferredUpdateList;
 870
 871                 if ( 0 == $wgUser->getID() ) {
 872                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 873                         return;
 874                 }
 875                 if ( wfReadOnly() ) {
 876                         $wgOut->readOnlyPage();
 877                         return;
 878                 }
 879                 $wgUser->addWatch( $wgTitle );
 880
 881                 $wgOut->setPagetitle( wfMsg( "addedwatch" ) );
 882                 $wgOut->setRobotpolicy( "noindex,follow" );
 883
 884                 $sk = $wgUser->getSkin() ;
 885                 $link = $sk->makeKnownLink ( $wgTitle->getPrefixedText() ) ;
 886
 887                 $text = str_replace( "$1", $link ,
 888                   wfMsg( "addedwatchtext" ) );
 889                 $wgOut->addHTML( $text );
 890
 891                 $up = new UserUpdate();
 892                 array_push( $wgDeferredUpdateList, $up );
 893
 894                 $wgOut->returnToMain( false );
 895         }
 896
 897         function unwatch()
 898         {
 899                 global $wgUser, $wgTitle, $wgOut, $wgLang;
 900                 global $wgDeferredUpdateList;
 901
 902                 if ( 0 == $wgUser->getID() ) {
 903                         $wgOut->errorpage( "watchnologin", "watchnologintext" );
 904                         return;
 905                 }
 906                 if ( wfReadOnly() ) {
 907                         $wgOut->readOnlyPage();
 908                         return;
 909                 }
 910                 $wgUser->removeWatch( $wgTitle );
 911
 912                 $wgOut->setPagetitle( wfMsg( "removedwatch" ) );
 913                 $wgOut->setRobotpolicy( "noindex,follow" );
 914
 915                 $sk = $wgUser->getSkin() ;
 916                 $link = $sk->makeKnownLink ( $wgTitle->getPrefixedText() ) ;
 917
 918                 $text = str_replace( "$1", $link ,
 919                   wfMsg( "removedwatchtext" ) );
 920                 $wgOut->addHTML( $text );
 921
 922                 $up = new UserUpdate();
 923                 array_push( $wgDeferredUpdateList, $up );
 924
 925                 $wgOut->returnToMain( false );
 926         }
 927
 928         # This shares a lot of issues (and code) with Recent Changes
 929
 930         function history()
 931         {
 932                 global $wgUser, $wgOut, $wgLang, $wgTitle, $offset, $limit;
 933
 934                 # If page hasn't changed, client can cache this
 935
 936                 $wgOut->checkLastModified( $this->getTimestamp() );
 937                 wfProfileIn( "Article::history" );
 938
 939                 $wgOut->setPageTitle( $wgTitle->getPRefixedText() );
 940                 $wgOut->setSubtitle( wfMsg( "revhistory" ) );
 941                 $wgOut->setArticleFlag( false );
 942                 $wgOut->setRobotpolicy( "noindex,nofollow" );
 943
 944                 if( $wgTitle->getArticleID() == 0 ) {
 945                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 946                         wfProfileOut();
 947                         return;
 948                 }
 949
 950                 $offset = (int)$offset;
 951                 $limit = (int)$limit;
 952                 if( $limit == 0 ) $limit = 50;
 953                 $namespace = $wgTitle->getNamespace();
 954                 $title = $wgTitle->getText();
 955                 $sql = "SELECT old_id,old_user," .
 956                   "old_comment,old_user_text,old_timestamp,old_minor_edit ".
 957                   "FROM old USE INDEX (name_title_timestamp) " .
 958                   "WHERE old_namespace={$namespace} AND " .
 959                   "old_title='" . wfStrencode( $wgTitle->getDBkey() ) . "' " .
 960                   "ORDER BY inverse_timestamp LIMIT $offset, $limit";
 961                 $res = wfQuery( $sql, "Article::history" );
 962
 963                 $revs = wfNumRows( $res );
 964                 if( $wgTitle->getArticleID() == 0 ) {
 965                         $wgOut->addHTML( wfMsg( "nohistory" ) );
 966                         wfProfileOut();
 967                         return;
 968                 }
 969
 970                 $sk = $wgUser->getSkin();
 971                 $numbar = wfViewPrevNext(
 972                         $offset, $limit,
 973                         $wgTitle->getPrefixedText(),
 974                         "action=history" );
 975                 $s = $numbar;
 976                 $s .= $sk->beginHistoryList();
 977
 978                 if($offset == 0 )
 979                 $s .= $sk->historyLine( $this->getTimestamp(), $this->getUser(),
 980                   $this->getUserText(), $namespace,
 981                   $title, 0, $this->getComment(),
 982                   ( $this->getMinorEdit() > 0 ) );
 983
 984                 $revs = wfNumRows( $res );
 985                 while ( $line = wfFetchObject( $res ) ) {
 986                         $s .= $sk->historyLine( $line->old_timestamp, $line->old_user,
 987                           $line->old_user_text, $namespace,
 988                           $title, $line->old_id,
 989                           $line->old_comment, ( $line->old_minor_edit > 0 ) );
 990                 }
 991                 $s .= $sk->endHistoryList();
 992                 $s .= $numbar;
 993                 $wgOut->addHTML( $s );
 994                 wfProfileOut();
 995         }
 996
 997         function protect()
 998         {
 999                 global $wgUser, $wgOut, $wgTitle;
1000
1001                 if ( ! $wgUser->isSysop() ) {
1002                         $wgOut->sysopRequired();
1003                         return;
1004                 }
1005                 if ( wfReadOnly() ) {
1006                         $wgOut->readOnlyPage();
1007                         return;
1008                 }
1009                 $id = $wgTitle->getArticleID();
1010                 if ( 0 == $id ) {
1011                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
1012                         return;
1013                 }
1014         $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
1015                   "cur_restrictions='sysop' WHERE cur_id={$id}";
1016                 wfQuery( $sql, "Article::protect" );
1017
1018                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL() ) );
1019         }
1020
1021         function unprotect()
1022         {
1023                 global $wgUser, $wgOut, $wgTitle;
1024
1025                 if ( ! $wgUser->isSysop() ) {
1026                         $wgOut->sysopRequired();
1027                         return;
1028                 }
1029                 if ( wfReadOnly() ) {
1030                         $wgOut->readOnlyPage();
1031                         return;
1032                 }
1033                 $id = $wgTitle->getArticleID();
1034                 if ( 0 == $id ) {
1035                         $wgOut->fatalEror( wfMsg( "badarticleerror" ) );
1036                         return;
1037                 }
1038                 $sql = "UPDATE cur SET cur_touched='" . wfTimestampNow() . "'," .
1039                   "cur_restrictions='' WHERE cur_id={$id}";
1040                 wfQuery( $sql, "Article::unprotect" );
1041
1042                 $wgOut->redirect( wfLocalUrl( $wgTitle->getPrefixedURL() ) );
1043         }
1044
1045         function delete()
1046         {
1047                 global $wgUser, $wgOut, $wgTitle;
1048                 global $wpConfirm, $wpReason, $image, $oldimage;
1049
1050                 # Anybody can delete old revisions of images; only sysops
1051                 # can delete articles and current images
1052
1053                 if ( ( ! $oldimage ) && ( ! $wgUser->isSysop() ) ) {
1054                         $wgOut->sysopRequired();
1055                         return;
1056                 }
1057                 if ( wfReadOnly() ) {
1058                         $wgOut->readOnlyPage();
1059                         return;
1060                 }
1061
1062                 # Better double-check that it hasn't been deleted yet!
1063                 $wgOut->setPagetitle( wfMsg( "confirmdelete" ) );
1064                 if ( $image ) {
1065                         if ( "" == trim( $image ) ) {
1066                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1067                                 return;
1068                         }
1069                         $sub = str_replace( "$1", $image, wfMsg( "deletesub" ) );
1070                 } else {
1071
1072                         if ( ( "" == trim( $wgTitle->getText() ) )
1073                           or ( $wgTitle->getArticleId() == 0 ) ) {
1074                                 $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1075                                 return;
1076                         }
1077                         $sub = str_replace( "$1", $wgTitle->getPrefixedText(),
1078                           wfMsg( "deletesub" ) );
1079
1080                         # determine whether this page has earlier revisions
1081                         # and insert a warning if it does
1082                         # we select the text because it might be useful below
1083                         $sql="SELECT old_text FROM old WHERE old_namespace=0 and old_title='" . wfStrencode($wgTitle->getPrefixedDBkey())."' ORDER BY inverse_timestamp LIMIT 1";
1084                         $res=wfQuery($sql,$fname);
1085                         if( ($old=wfFetchObject($res)) && !$wpConfirm ) {
1086                                 $skin=$wgUser->getSkin();
1087                                 $wgOut->addHTML("<B>".wfMsg("historywarning"));
1088                                 $wgOut->addHTML( $skin->historyLink() ."</B><P>");
1089                         }
1090
1091                         $sql="SELECT cur_text FROM cur WHERE cur_namespace=0 and cur_title='" . wfStrencode($wgTitle->getPrefixedDBkey())."'";
1092                         $res=wfQuery($sql,$fname);
1093                         if( ($s=wfFetchObject($res))) {
1094
1095                                 # if this is a mini-text, we can paste part of it into the deletion reason
1096
1097                                 #if this is empty, an earlier revision may contain "useful" text
1098                                 if($s->cur_text!="") {
1099                                         $text=$s->cur_text;
1100                                 } else {
1101                                         if($old) {
1102                                                 $text=$old->old_text;
1103                                                 $blanked=1;
1104                                         }
1105
1106                                 }
1107
1108                                 $length=strlen($text);
1109
1110                                 # this should not happen, since it is not possible to store an empty, new
1111                                 # page. Let's insert a standard text in case it does, though
1112                                 if($length==0 && !$wpReason) { $wpReason=wfmsg("exblank");}
1113
1114
1115                                 if($length < 500 && !$wpReason) {
1116
1117                                         # comment field=255, let's grep the first 150 to have some user
1118                                         # space left
1119                                         $text=substr($text,0,150);
1120                                         # let's strip out newlines and HTML tags
1121                                         $text=preg_replace("/\"/","'",$text);
1122                                         $text=preg_replace("/\</","&lt;",$text);
1123                                         $text=preg_replace("/\>/","&gt;",$text);
1124                                         $text=preg_replace("/[\n\r]/","",$text);
1125                                         if(!$blanked) {
1126                                                 $wpReason=wfMsg("excontent"). " '".$text;
1127                                         } else {
1128                                                 $wpReason=wfMsg("exbeforeblank") . " '".$text;
1129                                         }
1130                                         if($length>150) { $wpReason .= "..."; } # we've only pasted part of the text
1131                                         $wpReason.="'";
1132                                 }
1133                         }
1134
1135                 }
1136
1137                 # Likewise, deleting old images doesn't require confirmation
1138                 if ( $oldimage || 1 == $wpConfirm ) {
1139                         $this->doDelete();
1140                         return;
1141                 }
1142
1143                 $wgOut->setSubtitle( $sub );
1144                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1145                 $wgOut->addWikiText( wfMsg( "confirmdeletetext" ) );
1146
1147                 $t = $wgTitle->getPrefixedURL();
1148                 $q = "action=delete";
1149
1150                 if ( $image ) {
1151                         $q .= "&image={$image}";
1152                 } else if ( $oldimage ) {
1153                         $q .= "&oldimage={$oldimage}";
1154                 } else {
1155                         $q .= "&title={$t}";
1156                 }
1157                 $formaction = wfEscapeHTML( wfLocalUrl( "", $q ) );
1158                 $confirm = wfMsg( "confirm" );
1159                 $check = wfMsg( "confirmcheck" );
1160                 $delcom = wfMsg( "deletecomment" );
1161
1162                 $wgOut->addHTML( "
1163 <form id=\"deleteconfirm\" method=\"post\" action=\"{$formaction}\">
1164 <table border=0><tr><td align=right>
1165 {$delcom}:</td><td align=left>
1166 <input type=text size=60 name=\"wpReason\" value=\"{$wpReason}\">
1167 </td></tr><tr><td>&nbsp;</td></tr>
1168 <tr><td align=right>
1169 <input type=checkbox name=\"wpConfirm\" value='1'>
1170 </td><td>{$check}</td>
1171 </tr><tr><td>&nbsp;</td><td>
1172 <input type=submit name=\"wpConfirmB\" value=\"{$confirm}\">
1173 </td></tr></table></form>\n" );
1174
1175                 $wgOut->returnToMain( false );
1176         }
1177
1178         function doDelete()
1179         {
1180                 global $wgOut, $wgTitle, $wgUser, $wgLang;
1181                 global $image, $oldimage, $wpReason;
1182                 $fname = "Article::doDelete";
1183
1184                 if ( $image ) {
1185                         $dest = wfImageDir( $image );
1186                         $archive = wfImageDir( $image );
1187                         if ( ! unlink( "{$dest}/{$image}" ) ) {
1188                                 $wgOut->fileDeleteError( "{$dest}/{$image}" );
1189                                 return;
1190                         }
1191                         $sql = "DELETE FROM image WHERE img_name='" .
1192                           wfStrencode( $image ) . "'";
1193                         wfQuery( $sql, $fname );
1194
1195                         $sql = "SELECT oi_archive_name FROM oldimage WHERE oi_name='" .
1196                           wfStrencode( $image ) . "'";
1197                         $res = wfQuery( $sql, $fname );
1198
1199                         while ( $s = wfFetchObject( $res ) ) {
1200                                 $this->doDeleteOldImage( $s->oi_archive_name );
1201                         }
1202                         $sql = "DELETE FROM oldimage WHERE oi_name='" .
1203                           wfStrencode( $image ) . "'";
1204                         wfQuery( $sql, $fname );
1205
1206                         # Image itself is now gone, and database is cleaned.
1207                         # Now we remove the image description page.
1208
1209                         $nt = Title::newFromText( $wgLang->getNsText( Namespace::getImage() ) . ":" . $image );
1210                         $this->doDeleteArticle( $nt );
1211
1212                         $deleted = $image;
1213                 } else if ( $oldimage ) {
1214                         $this->doDeleteOldImage( $oldimage );
1215                         $sql = "DELETE FROM oldimage WHERE oi_archive_name='" .
1216                           wfStrencode( $oldimage ) . "'";
1217                         wfQuery( $sql, $fname );
1218
1219                         $deleted = $oldimage;
1220                 } else {
1221                         $this->doDeleteArticle( $wgTitle );
1222                         $deleted = $wgTitle->getPrefixedText();
1223                 }
1224                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1225                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1226
1227                 $sk = $wgUser->getSkin();
1228                 $loglink = $sk->makeKnownLink( $wgLang->getNsText(
1229                   Namespace::getWikipedia() ) .
1230                   ":" . wfMsg( "dellogpage" ), wfMsg( "deletionlog" ) );
1231
1232                 $text = str_replace( "$1" , $deleted, wfMsg( "deletedtext" ) );
1233                 $text = str_replace( "$2", $loglink, $text );
1234
1235                 $wgOut->addHTML( "<p>" . $text );
1236                 $wgOut->returnToMain( false );
1237         }
1238
1239         function doDeleteOldImage( $oldimage )
1240         {
1241                 global $wgOut;
1242
1243                 $name = substr( $oldimage, 15 );
1244                 $archive = wfImageArchiveDir( $name );
1245                 if ( ! unlink( "{$archive}/{$oldimage}" ) ) {
1246                         $wgOut->fileDeleteError( "{$archive}/{$oldimage}" );
1247                 }
1248         }
1249
1250         function doDeleteArticle( $title )
1251         {
1252                 global $wgUser, $wgOut, $wgLang, $wpReason, $wgTitle, $wgDeferredUpdateList;
1253
1254                 $fname = "Article::doDeleteArticle";
1255                 $ns = $title->getNamespace();
1256                 $t = wfStrencode( $title->getDBkey() );
1257                 $id = $title->getArticleID();
1258
1259                 if ( "" == $t ) {
1260                         $wgOut->fatalError( wfMsg( "cannotdelete" ) );
1261                         return;
1262                 }
1263
1264                 $u = new SiteStatsUpdate( 0, 1, -$this->isCountable( $this->getContent( true ) ) );
1265                 array_push( $wgDeferredUpdateList, $u );
1266
1267                 # Move article and history to the "archive" table
1268                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1269                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1270                   "ar_flags) SELECT cur_namespace,cur_title,cur_text,cur_comment," .
1271                   "cur_user,cur_user_text,cur_timestamp,cur_minor_edit,0 FROM cur " .
1272                   "WHERE cur_namespace={$ns} AND cur_title='{$t}'";
1273                 wfQuery( $sql, $fname );
1274
1275                 $sql = "INSERT INTO archive (ar_namespace,ar_title,ar_text," .
1276                   "ar_comment,ar_user,ar_user_text,ar_timestamp,ar_minor_edit," .
1277                   "ar_flags) SELECT old_namespace,old_title,old_text,old_comment," .
1278                   "old_user,old_user_text,old_timestamp,old_minor_edit,old_flags " .
1279                   "FROM old WHERE old_namespace={$ns} AND old_title='{$t}'";
1280                 wfQuery( $sql, $fname );
1281
1282                 # Now that it's safely backed up, delete it
1283
1284                 $sql = "DELETE FROM cur WHERE cur_namespace={$ns} AND " .
1285                   "cur_title='{$t}'";
1286                 wfQuery( $sql, $fname );
1287
1288                 $sql = "DELETE FROM old WHERE old_namespace={$ns} AND " .
1289                   "old_title='{$t}'";
1290                 wfQuery( $sql, $fname );
1291
1292                 $sql = "DELETE FROM recentchanges WHERE rc_namespace={$ns} AND " .
1293                   "rc_title='{$t}'";
1294         wfQuery( $sql, $fname );
1295
1296                 # Finally, clean up the link tables
1297
1298                 if ( 0 != $id ) {
1299                         $t = wfStrencode( $title->getPrefixedDBkey() );
1300                         $sql = "SELECT l_from FROM links WHERE l_to={$id}";
1301                         $res = wfQuery( $sql, $fname );
1302
1303                         $sql = "INSERT INTO brokenlinks (bl_from,bl_to) VALUES ";
1304             $now = wfTimestampNow();
1305                         $sql2 = "UPDATE cur SET cur_touched='{$now}' WHERE cur_id IN (";
1306                         $first = true;
1307
1308                         while ( $s = wfFetchObject( $res ) ) {
1309                                 $nt = Title::newFromDBkey( $s->l_from );
1310                                 $lid = $nt->getArticleID();
1311
1312                                 if ( ! $first ) { $sql .= ","; $sql2 .= ","; }
1313                                 $first = false;
1314                                 $sql .= "({$lid},'{$t}')";
1315                                 $sql2 .= "{$lid}";
1316                         }
1317                         $sql2 .= ")";
1318                         if ( ! $first ) {
1319                                 wfQuery( $sql, $fname );
1320                                 wfQuery( $sql2, $fname );
1321                         }
1322                         wfFreeResult( $res );
1323
1324                         $sql = "DELETE FROM links WHERE l_to={$id}";
1325                         wfQuery( $sql, $fname );
1326
1327                         $sql = "DELETE FROM links WHERE l_from='{$t}'";
1328                         wfQuery( $sql, $fname );
1329
1330                         $sql = "DELETE FROM imagelinks WHERE il_from='{$t}'";
1331                         wfQuery( $sql, $fname );
1332
1333                         $sql = "DELETE FROM brokenlinks WHERE bl_from={$id}";
1334                         wfQuery( $sql, $fname );
1335                 }
1336
1337                 $log = new LogPage( wfMsg( "dellogpage" ), wfMsg( "dellogpagetext" ) );
1338                 $art = $title->getPrefixedText();
1339                 $wpReason = wfCleanQueryVar( $wpReason );
1340                 $log->addEntry( str_replace( "$1", $art, wfMsg( "deletedarticle" ) ), $wpReason );
1341
1342                 # Clear the cached article id so the interface doesn't act like we exist
1343                 $wgTitle->resetArticleID( 0 );
1344                 $wgTitle->mArticleID = 0;
1345         }
1346
1347         function revert()
1348         {
1349                 global $wgOut;
1350                 global $oldimage;
1351
1352                 if ( strlen( $oldimage ) < 16 ) {
1353                         $wgOut->unexpectedValueError( "oldimage", $oldimage );
1354                         return;
1355                 }
1356                 if ( wfReadOnly() ) {
1357                         $wgOut->readOnlyPage();
1358                         return;
1359                 }
1360                 $name = substr( $oldimage, 15 );
1361
1362                 $dest = wfImageDir( $name );
1363                 $archive = wfImageArchiveDir( $name );
1364                 $curfile = "{$dest}/{$name}";
1365
1366                 if ( ! is_file( $curfile ) ) {
1367                         $wgOut->fileNotFoundError( $curfile );
1368                         return;
1369                 }
1370                 $oldver = wfTimestampNow() . "!{$name}";
1371                 $size = wfGetSQL( "oldimage", "oi_size", "oi_archive_name='" .
1372                   wfStrencode( $oldimage ) . "'" );
1373
1374                 if ( ! rename( $curfile, "${archive}/{$oldver}" ) ) {
1375                         $wgOut->fileRenameError( $curfile, "${archive}/{$oldver}" );
1376                         return;
1377                 }
1378                 if ( ! copy( "{$archive}/{$oldimage}", $curfile ) ) {
1379                         $wgOut->fileCopyError( "${archive}/{$oldimage}", $curfile );
1380                 }
1381                 wfRecordUpload( $name, $oldver, $size, wfMsg( "reverted" ) );
1382
1383                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1384                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1385                 $wgOut->addHTML( wfMsg( "imagereverted" ) );
1386                 $wgOut->returnToMain( false );
1387         }
1388
1389         function rollback()
1390         {
1391                 global $wgUser, $wgTitle, $wgLang, $wgOut, $from;
1392
1393                 if ( ! $wgUser->isSysop() ) {
1394                         $wgOut->sysopRequired();
1395                         return;
1396                 }
1397
1398                 # Replace all this user's current edits with the next one down
1399                 $tt = wfStrencode( $wgTitle->getDBKey() );
1400                 $n = $wgTitle->getNamespace();
1401
1402                 # Get the last editor
1403                 $sql = "SELECT cur_id,cur_user,cur_user_text,cur_comment FROM cur WHERE cur_title='{$tt}' AND cur_namespace={$n}";
1404                 $res = wfQuery( $sql );
1405                 if( ($x = wfNumRows( $res )) != 1 ) {
1406                         # Something wrong
1407                         $wgOut->addHTML( wfMsg( "notanarticle" ) );
1408                         return;
1409                 }
1410                 $s = wfFetchObject( $res );
1411                 $ut = wfStrencode( $s->cur_user_text );
1412                 $uid = $s->cur_user;
1413                 $pid = $s->cur_id;
1414
1415                 $from = str_replace( '_', ' ', wfCleanQueryVar( $from ) );
1416                 if( $from != $s->cur_user_text ) {
1417                         $wgOut->setPageTitle(wfmsg("rollbackfailed"));
1418                         $wgOut->addWikiText( wfMsg( "alreadyrolled",
1419                                 htmlspecialchars( $wgTitle->getPrefixedText()),
1420                                 htmlspecialchars( $from ),
1421                                 htmlspecialchars( $s->cur_user_text ) ) );
1422                         if($s->cur_comment != "") {
1423                                 $wgOut->addHTML(
1424                                         wfMsg("editcomment",
1425                                         htmlspecialchars( $s->cur_comment ) ) );
1426                                 }
1427                         return;
1428                 }
1429
1430                 # Get the last edit not by this guy
1431                 $sql = "SELECT old_text,old_user,old_user_text
1432                 FROM old USE INDEX (name_title_timestamp)
1433                 WHERE old_namespace={$n} AND old_title='{$tt}'
1434                 AND (old_user <> {$uid} OR old_user_text <> '{$ut}')
1435                 ORDER BY inverse_timestamp LIMIT 1";
1436                 $res = wfQuery( $sql );
1437                 if( wfNumRows( $res ) != 1 ) {
1438                         # Something wrong
1439                         $wgOut->setPageTitle(wfMsg("rollbackfailed"));
1440                         $wgOut->addHTML( wfMsg( "cantrollback" ) );
1441                         return;
1442                 }
1443                 $s = wfFetchObject( $res );
1444
1445                 # Save it!
1446                 $newcomment = str_replace( "$1", $s->old_user_text, wfMsg( "revertpage" ) );
1447                 $wgOut->setPagetitle( wfMsg( "actioncomplete" ) );
1448                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1449                 $wgOut->addHTML( "<h2>" . $newcomment . "</h2>\n<hr>\n" );
1450                 $this->updateArticle( $s->old_text, $newcomment, 1, $wgTitle->userIsWatching() );
1451
1452                 $wgOut->returnToMain( false );
1453         }
1454
1455
1456         # Do standard deferred updates after page view
1457
1458         /* private */ function viewUpdates()
1459         {
1460                 global $wgDeferredUpdateList, $wgTitle;
1461
1462                 if ( 0 != $this->getID() ) {
1463                         $u = new ViewCountUpdate( $this->getID() );
1464                         array_push( $wgDeferredUpdateList, $u );
1465                         $u = new SiteStatsUpdate( 1, 0, 0 );
1466                         array_push( $wgDeferredUpdateList, $u );
1467
1468                         $u = new UserTalkUpdate( 0, $wgTitle->getNamespace(),
1469                           $wgTitle->getDBkey() );
1470                         array_push( $wgDeferredUpdateList, $u );
1471                 }
1472         }
1473
1474         # Do standard deferred updates after page edit.
1475         # Every 1000th edit, prune the recent changes table.
1476
1477         /* private */ function editUpdates( $text )
1478         {
1479                 global $wgDeferredUpdateList, $wgTitle;
1480
1481                 wfSeedRandom();
1482                 if ( 0 == mt_rand( 0, 999 ) ) {
1483                         $cutoff = wfUnix2Timestamp( time() - ( 7 * 86400 ) );
1484                         $sql = "DELETE FROM recentchanges WHERE rc_timestamp < '{$cutoff}'";
1485                         wfQuery( $sql );
1486                 }
1487                 $id = $this->getID();
1488                 $title = $wgTitle->getPrefixedDBkey();
1489                 $adj = $this->mCountAdjustment;
1490
1491                 if ( 0 != $id ) {
1492                         $u = new LinksUpdate( $id, $title );
1493                         array_push( $wgDeferredUpdateList, $u );
1494                         $u = new SiteStatsUpdate( 0, 1, $adj );
1495                         array_push( $wgDeferredUpdateList, $u );
1496                         $u = new SearchUpdate( $id, $title, $text );
1497                         array_push( $wgDeferredUpdateList, $u );
1498
1499                         $u = new UserTalkUpdate( 1, $wgTitle->getNamespace(),
1500                           $wgTitle->getDBkey() );
1501                         array_push( $wgDeferredUpdateList, $u );
1502                 }
1503         }
1504
1505         /* private */ function setOldSubtitle()
1506         {
1507                 global $wgLang, $wgOut;
1508
1509                 $td = $wgLang->timeanddate( $this->mTimestamp, true );
1510                 $r = str_replace( "$1", "{$td}", wfMsg( "revisionasof" ) );
1511                 $wgOut->setSubtitle( "({$r})" );
1512         }
1513
1514         function blockedIPpage()
1515         {
1516                 global $wgOut, $wgUser, $wgLang;
1517
1518                 $wgOut->setPageTitle( wfMsg( "blockedtitle" ) );
1519                 $wgOut->setRobotpolicy( "noindex,nofollow" );
1520                 $wgOut->setArticleFlag( false );
1521
1522                 $id = $wgUser->blockedBy();
1523                 $reason = $wgUser->blockedFor();
1524
1525                 $name = User::whoIs( $id );
1526                 $link = "[[" . $wgLang->getNsText( Namespace::getUser() ) .
1527                   ":{$name}|{$name}]]";
1528
1529                 $text = str_replace( "$1", $link, wfMsg( "blockedtext" ) );
1530                 $text = str_replace( "$2", $reason, $text );
1531                 $wgOut->addWikiText( $text );
1532                 $wgOut->returnToMain( false );
1533         }
1534
1535         # This function is called right before saving the wikitext,
1536         # so we can do things like signatures and links-in-context.
1537
1538         function preSaveTransform( $text )
1539         {
1540                 $s = "";
1541                 while ( "" != $text ) {
1542                         $p = preg_split( "/<\\s*nowiki\\s*>/i", $text, 2 );
1543                         $s .= $this->pstPass2( $p[0] );
1544
1545                         if ( ( count( $p ) < 2 ) || ( "" == $p[1] ) ) { $text = ""; }
1546                         else {
1547                                 $q = preg_split( "/<\\/\\s*nowiki\\s*>/i", $p[1], 2 );
1548                                 $s .= "<nowiki>{$q[0]}</nowiki>";
1549                                 $text = $q[1];
1550                         }
1551                 }
1552                 return rtrim( $s );
1553         }
1554
1555         /* private */ function pstPass2( $text )
1556         {
1557                 global $wgUser, $wgLang, $wgTitle, $wgLocaltimezone;
1558
1559                 # Signatures
1560                 #
1561                 $n = $wgUser->getName();
1562                 $k = $wgUser->getOption( "nickname" );
1563                 if ( "" == $k ) { $k = $n; }
1564                 if(isset($wgLocaltimezone)) {
1565                         $oldtz = getenv("TZ"); putenv("TZ=$wgLocaltimezone");
1566                 }
1567                 /* Note: this is an ugly timezone hack for the European wikis */
1568                 $d = $wgLang->timeanddate( date( "YmdHis" ), false ) .
1569                   " (" . date( "T" ) . ")";
1570                 if(isset($wgLocaltimezone)) putenv("TZ=$oldtz");
1571
1572                 $text = preg_replace( "/~~~~/", "[[" . $wgLang->getNsText(
1573                   Namespace::getUser() ) . ":$n|$k]] $d", $text );
1574                 $text = preg_replace( "/~~~/", "[[" . $wgLang->getNsText(
1575                   Namespace::getUser() ) . ":$n|$k]]", $text );
1576
1577                 # Context links: [[|name]] and [[name (context)|]]
1578                 #
1579                 $tc = "[&;%\\-,.\\(\\)' _0-9A-Za-z\\/:\\x80-\\xff]";
1580                 $np = "[&;%\\-,.' _0-9A-Za-z\\/:\\x80-\\xff]"; # No parens
1581                 $conpat = "/^({$np}+) \\(({$tc}+)\\)$/";
1582
1583                 $p1 = "/\[\[({$np}+) \\(({$np}+)\\)\\|]]/";             # [[page (context)|]]
1584                 $p2 = "/\[\[\\|({$tc}+)]]/";                                    # [[|page]]
1585                 $p3 = "/\[\[([A-Za-z _]+):({$np}+)\\|]]/";              # [[namespace:page|]]
1586                 $p4 = "/\[\[([A-Aa-z _]+):({$np}+) \\(({$np}+)\\)\\|]]/";
1587                                                                                                                 # [[ns:page (cont)|]]
1588                 $context = "";
1589                 $t = $wgTitle->getText();
1590                 if ( preg_match( $conpat, $t, $m ) ) {
1591                         $context = $m[2];
1592                 }
1593                 $text = preg_replace( $p4, "[[\\1:\\2 (\\3)|\\2]]", $text );
1594                 $text = preg_replace( $p1, "[[\\1 (\\2)|\\1]]", $text );
1595                 $text = preg_replace( $p3, "[[\\1:\\2|\\2]]", $text );
1596
1597                 if ( "" == $context ) {
1598                         $text = preg_replace( $p2, "[[\\1]]", $text );
1599                 } else {
1600                         $text = preg_replace( $p2, "[[\\1 ({$context})|\\1]]", $text );
1601                 }
1602                 # Replace local image links with new [[image:]] style
1603
1604                 $text = preg_replace(
1605                   "/(^|[^[])http:\/\/(www.|)wikipedia.com\/upload\/" .
1606                   "([a-zA-Z0-9_:.~\%\-]+)\.(png|PNG|jpg|JPG|jpeg|JPEG|gif|GIF)/",
1607                   "\\1[[image:\\3.\\4]]", $text );
1608                 $text = preg_replace(
1609                   "/(^|[^[])http:\/\/(www.|)wikipedia.com\/images\/uploads\/" .
1610                   "([a-zA-Z0-9_:.~\%\-]+)\.(png|PNG|jpg|JPG|jpeg|JPEG|gif|GIF)/",
1611                   "\\1[[image:\\3.\\4]]", $text );
1612
1613                 return $text;
1614         }
1615
1616
1617         /* Caching functions */
1618
1619     function tryFileCache() {
1620                 if($this->isFileCacheable()) {
1621                         if($this->isFileCacheGood()) {
1622                 wfDebug( " tryFileCache() - about to load\n" );
1623                                 $this->loadFromFileCache();
1624                                 exit;
1625                         } else {
1626                     wfDebug( " tryFileCache() - starting buffer\n" );
1627                         ob_start( array(&$this, 'saveToFileCache' ) );
1628                         }
1629                 } else {
1630                         wfDebug( " tryFileCache() - not cacheable\n" );
1631                 }
1632         }
1633
1634         function isFileCacheable() {
1635                 global $wgUser, $wgTitle, $wgUseFileCache, $wgShowIPinHeader;
1636                 global $action, $oldid, $diff, $redirect, $printable;
1637                 return $wgUseFileCache
1638                         and (!$wgShowIPinHeader)
1639                         and ($wgUser->getId() == 0)
1640                         and (!$wgUser->getNewtalk())
1641                         and ($wgTitle->getNamespace != Namespace::getSpecial())
1642                         and ($action == "view")
1643                         and (!isset($oldid))
1644                         and (!isset($diff))
1645                         and (!isset($redirect))
1646                         and (!isset($printable))
1647                         and (!$this->mRedirectedFrom);
1648
1649         }
1650
1651         function fileCacheName() {
1652                 global $wgTitle, $wgFileCacheDirectory, $wgLang;
1653                 if( !$this->mFileCache ) {
1654                         $hash = md5( $key = $wgTitle->getDbkey() );
1655                         if( $wgTitle->getNamespace() )
1656                                 $key = $wgLang->getNsText( $wgTitle->getNamespace() ) . ":" . $key;
1657                         $key = str_replace( ".", "%2E", urlencode( $key ) );
1658                         $hash1 = substr( $hash, 0, 1 );
1659                         $hash2 = substr( $hash, 0, 2 );
1660                         $this->mFileCache = "{$wgFileCacheDirectory}/{$hash1}/{$hash2}/{$key}.html";
1661                         wfDebug( " fileCacheName() - {$this->mFileCache}\n" );
1662                 }
1663                 return $this->mFileCache;
1664         }
1665
1666         function isFileCacheGood() {
1667                 global $wgUser, $wgCacheEpoch;
1668                 if(!file_exists( $fn = $this->fileCacheName() ) ) return false;
1669                 $cachetime = wfUnix2Timestamp( filemtime( $fn ) );
1670                 $good = (( $this->mTouched <= $cachetime ) &&
1671                         ($wgCacheEpoch <= $cachetime ));
1672         wfDebug(" isFileCacheGood() - cachetime $cachetime, touched {$this->mTouched} epoch {$wgCacheEpoch}, good $good\n");
1673                 return $good;
1674         }
1675
1676         function loadFromFileCache() {
1677                 global $wgUseGzip, $wgOut;
1678                 wfDebug(" loadFromFileCache()\n");
1679                 $filename=$this->fileCacheName();
1680                 $filenamegz = "{$filename}.gz";
1681                 $wgOut->sendCacheControl();
1682                 if( $wgUseGzip
1683                         && wfClientAcceptsGzip()
1684                         && file_exists( $filenamegz)
1685                         && ( filemtime( $filenamegz ) >= filemtime( $filename ) ) ) {
1686                         wfDebug("  sending gzip\n");
1687                         header( "Content-Encoding: gzip" );
1688                         header( "Vary: Accept-Encoding" );
1689                         $filename = $filenamegz;
1690                 }
1691                 readfile( $filename );
1692         }
1693
1694         function saveToFileCache( $text ) {
1695                 global $wgUseGzip, $wgCompressByDefault;
1696                 if(strcmp($text,"") == 0) return "";
1697
1698         wfDebug(" saveToFileCache()\n", false);
1699                 $filename=$this->fileCacheName();
1700                 $mydir2=substr($filename,0,strrpos($filename,"/")); # subdirectory level 2
1701                 $mydir1=substr($mydir2,0,strrpos($mydir2,"/")); # subdirectory level 1
1702                 if(!file_exists($mydir1)) { mkdir($mydir1,0775); } # create if necessary
1703                 if(!file_exists($mydir2)) { mkdir($mydir2,0775); }
1704
1705                 $f = fopen( $filename, "w" );
1706                 if($f) {
1707                         $now = wfTimestampNow();
1708                         fwrite( $f, str_replace( "</html>",
1709                                 "<!-- Cached $now -->\n</html>",
1710                                 $text ) );
1711                         fclose( $f );
1712                         if( $wgUseGzip and $wgCompressByDefault ) {
1713                                 $start = microtime();
1714                                 wfDebug("  saving gzip\n");
1715                                 $gzout = gzencode( str_replace( "</html>",
1716                                                 "<!-- Cached/compressed $now -->\n</html>",
1717                                                 $text ) );
1718                                 if( $gzout === false ) {
1719                                         wfDebug("  failed to gzip compress, sending plaintext\n");
1720                                         return $text;
1721                                 }
1722                                 if( $f = fopen( "{$filename}.gz", "w" ) ) {
1723                                         fwrite( $f, $gzout );
1724                                         fclose( $f );
1725                                         $end = microtime();
1726
1727                                         list($usec1, $sec1) = explode(" ",$start);
1728                                         list($usec2, $sec2) = explode(" ",$end);
1729                                         $interval = ((float)$usec2 + (float)$sec2) -
1730                                                                 ((float)$usec1 + (float)$sec1);
1731                                         wfDebug("  saved gzip in $interval\n");
1732                                 } else {
1733                                         wfDebug("  failed to write gzip, still sending\n" );
1734                                 }
1735                                 if(wfClientAcceptsGzip()) {
1736                                         header( "Content-Encoding: gzip" );
1737                                         header( "Vary: Accept-Encoding" );
1738                                         wfDebug("  sending NEW gzip now...\n" );
1739                                         return $gzout;
1740                                 }
1741                         }
1742                 }
1743                 return $text;
1744         }
1745
1746 }
1747
1748 ?>