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