includes/RecentChange.php

   1 <?php
   2 /**
   3  *
   4  */
   5
   6 /**
   7  * Utility class for creating new RC entries
   8  * mAttribs:
   9  *      rc_id           id of the row in the recentchanges table
  10  *      rc_timestamp    time the entry was made
  11  *      rc_cur_time     timestamp on the cur row
  12  *      rc_namespace    namespace #
  13  *      rc_title        non-prefixed db key
  14  *      rc_type         is new entry, used to determine whether updating is necessary
  15  *      rc_minor        is minor
  16  *      rc_cur_id       page_id of associated page entry
  17  *      rc_user         user id who made the entry
  18  *      rc_user_text    user name who made the entry
  19  *      rc_comment      edit summary
  20  *      rc_this_oldid   rev_id associated with this entry (or zero)
  21  *      rc_last_oldid   rev_id associated with the entry before this one (or zero)
  22  *      rc_bot          is bot, hidden
  23  *      rc_ip           IP address of the user in dotted quad notation
  24  *      rc_new          obsolete, use rc_type==RC_NEW
  25  *      rc_patrolled    boolean whether or not someone has marked this edit as patrolled
  26  *      rc_old_len      integer byte length of the text before the edit
  27  *      rc_new_len      the same after the edit
  28  *
  29  * mExtra:
  30  *      prefixedDBkey   prefixed db key, used by external app via msg queue
  31  *      lastTimestamp   timestamp of previous entry, used in WHERE clause during update
  32  *      lang            the interwiki prefix, automatically set in save()
  33  *  oldSize         text size before the change
  34  *  newSize         text size after the change
  35  *
  36  * temporary:           not stored in the database
  37  *      notificationtimestamp
  38  *      numberofWatchingusers
  39  *
  40  * @todo document functions and variables
  41  */
  42 class RecentChange
  43 {
  44         var $mAttribs = array(), $mExtra = array();
  45         var $mTitle = false, $mMovedToTitle = false;
  46         var $numberofWatchingusers = 0 ; # Dummy to prevent error message in SpecialRecentchangeslinked
  47
  48         # Factory methods
  49
  50         public static function newFromRow( $row )
  51         {
  52                 $rc = new RecentChange;
  53                 $rc->loadFromRow( $row );
  54                 return $rc;
  55         }
  56
  57         public static function newFromCurRow( $row, $rc_this_oldid = 0 )
  58         {
  59                 $rc = new RecentChange;
  60                 $rc->loadFromCurRow( $row, $rc_this_oldid );
  61                 $rc->notificationtimestamp = false;
  62                 $rc->numberofWatchingusers = false;
  63                 return $rc;
  64         }
  65
  66         /**
  67          * Obtain the recent change with a given rc_id value
  68          *
  69          * @param $rcid rc_id value to retrieve
  70          * @return RecentChange
  71          */
  72         public static function newFromId( $rcid ) {
  73                 $dbr = wfGetDB( DB_SLAVE );
  74                 $res = $dbr->select( 'recentchanges', '*', array( 'rc_id' => $rcid ), __METHOD__ );
  75                 if( $res && $dbr->numRows( $res ) > 0 ) {
  76                         $row = $dbr->fetchObject( $res );
  77                         $dbr->freeResult( $res );
  78                         return self::newFromRow( $row );
  79                 } else {
  80                         return NULL;
  81                 }
  82         }
  83
  84         /**
  85          * Find the first recent change matching some specific conditions
  86          *
  87          * @param array $conds Array of conditions
  88          * @param mixed $fname Override the method name in profiling/logs
  89          * @return RecentChange
  90          */
  91         public static function newFromConds( $conds, $fname = false ) {
  92                 if( $fname === false )
  93                         $fname = __METHOD__;
  94                 $dbr = wfGetDB( DB_SLAVE );
  95                 $res = $dbr->select(
  96                         'recentchanges',
  97                         '*',
  98                         $conds,
  99                         $fname
 100                 );
 101                 if( $res instanceof ResultWrapper && $res->numRows() > 0 ) {
 102                         $row = $res->fetchObject();
 103                         $res->free();
 104                         return self::newFromRow( $row );
 105                 }
 106                 return null;
 107         }
 108
 109         # Accessors
 110
 111         function setAttribs( $attribs )
 112         {
 113                 $this->mAttribs = $attribs;
 114         }
 115
 116         function setExtra( $extra )
 117         {
 118                 $this->mExtra = $extra;
 119         }
 120
 121         function &getTitle()
 122         {
 123                 if ( $this->mTitle === false ) {
 124                         $this->mTitle = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
 125                 }
 126                 return $this->mTitle;
 127         }
 128
 129         function getMovedToTitle()
 130         {
 131                 if ( $this->mMovedToTitle === false ) {
 132                         $this->mMovedToTitle = Title::makeTitle( $this->mAttribs['rc_moved_to_ns'],
 133                                 $this->mAttribs['rc_moved_to_title'] );
 134                 }
 135                 return $this->mMovedToTitle;
 136         }
 137
 138         # Writes the data in this object to the database
 139         function save()
 140         {
 141                 global $wgLocalInterwiki, $wgPutIPinRC, $wgRC2UDPAddress, $wgRC2UDPPort, $wgRC2UDPPrefix;
 142                 $fname = 'RecentChange::save';
 143
 144                 $dbw = wfGetDB( DB_MASTER );
 145                 if ( !is_array($this->mExtra) ) {
 146                         $this->mExtra = array();
 147                 }
 148                 $this->mExtra['lang'] = $wgLocalInterwiki;
 149
 150                 if ( !$wgPutIPinRC ) {
 151                         $this->mAttribs['rc_ip'] = '';
 152                 }
 153
 154                 ## If our database is strict about IP addresses, use NULL instead of an empty string
 155                 if ( $dbw->strictIPs() and $this->mAttribs['rc_ip'] == '' ) {
 156                         unset( $this->mAttribs['rc_ip'] );
 157                 }
 158
 159                 # Fixup database timestamps
 160                 $this->mAttribs['rc_timestamp'] = $dbw->timestamp($this->mAttribs['rc_timestamp']);
 161                 $this->mAttribs['rc_cur_time'] = $dbw->timestamp($this->mAttribs['rc_cur_time']);
 162                 $this->mAttribs['rc_id'] = $dbw->nextSequenceValue( 'rc_rc_id_seq' );
 163
 164                 ## If we are using foreign keys, an entry of 0 for the page_id will fail, so use NULL
 165                 if ( $dbw->cascadingDeletes() and $this->mAttribs['rc_cur_id']==0 ) {
 166                         unset ( $this->mAttribs['rc_cur_id'] );
 167                 }
 168
 169                 # Insert new row
 170                 $dbw->insert( 'recentchanges', $this->mAttribs, $fname );
 171
 172                 # Set the ID
 173                 $this->mAttribs['rc_id'] = $dbw->insertId();
 174
 175                 # Update old rows, if necessary
 176                 if ( $this->mAttribs['rc_type'] == RC_EDIT ) {
 177                         $lastTime = $this->mExtra['lastTimestamp'];
 178                         #$now = $this->mAttribs['rc_timestamp'];
 179                         #$curId = $this->mAttribs['rc_cur_id'];
 180
 181                         # Don't bother looking for entries that have probably
 182                         # been purged, it just locks up the indexes needlessly.
 183                         global $wgRCMaxAge;
 184                         $age = time() - wfTimestamp( TS_UNIX, $lastTime );
 185                         if( $age < $wgRCMaxAge ) {
 186                                 # live hack, will commit once tested - kate
 187                                 # Update rc_this_oldid for the entries which were current
 188                                 #
 189                                 #$oldid = $this->mAttribs['rc_last_oldid'];
 190                                 #$ns = $this->mAttribs['rc_namespace'];
 191                                 #$title = $this->mAttribs['rc_title'];
 192                                 #
 193                                 #$dbw->update( 'recentchanges',
 194                                 #       array( /* SET */
 195                                 #               'rc_this_oldid' => $oldid
 196                                 #       ), array( /* WHERE */
 197                                 #               'rc_namespace' => $ns,
 198                                 #               'rc_title' => $title,
 199                                 #               'rc_timestamp' => $dbw->timestamp( $lastTime )
 200                                 #       ), $fname
 201                                 #);
 202                         }
 203
 204                         # Update rc_cur_time
 205                         #$dbw->update( 'recentchanges', array( 'rc_cur_time' => $now ),
 206                         #       array( 'rc_cur_id' => $curId ), $fname );
 207                 }
 208
 209                 # Notify external application via UDP
 210                 if ( $wgRC2UDPAddress ) {
 211                         $conn = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
 212                         if ( $conn ) {
 213                                 $line = $wgRC2UDPPrefix . $this->getIRCLine();
 214                                 socket_sendto( $conn, $line, strlen($line), 0, $wgRC2UDPAddress, $wgRC2UDPPort );
 215                                 socket_close( $conn );
 216                         }
 217                 }
 218
 219                 # E-mail notifications
 220                 global $wgUseEnotif;
 221                 if( $wgUseEnotif ) {
 222                         # this would be better as an extension hook
 223                         global $wgUser;
 224                         $enotif = new EmailNotification;
 225                         $title = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
 226                         $enotif->notifyOnPageChange( $wgUser, $title,
 227                                 $this->mAttribs['rc_timestamp'],
 228                                 $this->mAttribs['rc_comment'],
 229                                 $this->mAttribs['rc_minor'],
 230                                 $this->mAttribs['rc_last_oldid'] );
 231                 }
 232
 233                 # Notify extensions
 234                 wfRunHooks( 'RecentChange_save', array( &$this ) );
 235         }
 236
 237         /**
 238          * Mark a given change as patrolled
 239          *
 240          * @param mixed $change RecentChange or corresponding rc_id
 241          */
 242         public static function markPatrolled( $change ) {
 243                 $rcid = $change instanceof RecentChange
 244                         ? $change->mAttribs['rc_id']
 245                         : $change;
 246                 $dbw = wfGetDB( DB_MASTER );
 247                 $dbw->update(
 248                         'recentchanges',
 249                         array(
 250                                 'rc_patrolled' => 1
 251                         ),
 252                         array(
 253                                 'rc_id' => $rcid
 254                         ),
 255                         __METHOD__
 256                 );
 257         }
 258
 259         # Makes an entry in the database corresponding to an edit
 260         public static function notifyEdit( $timestamp, &$title, $minor, &$user, $comment,
 261                 $oldId, $lastTimestamp, $bot = "default", $ip = '', $oldSize = 0, $newSize = 0,
 262                 $newId = 0)
 263         {
 264
 265                 if ( $bot === 'default' ) {
 266                         $bot = $user->isAllowed( 'bot' );
 267                 }
 268
 269                 if ( !$ip ) {
 270                         $ip = wfGetIP();
 271                         if ( !$ip ) {
 272                                 $ip = '';
 273                         }
 274                 }
 275
 276                 $rc = new RecentChange;
 277                 $rc->mAttribs = array(
 278                         'rc_timestamp'  => $timestamp,
 279                         'rc_cur_time'   => $timestamp,
 280                         'rc_namespace'  => $title->getNamespace(),
 281                         'rc_title'      => $title->getDBkey(),
 282                         'rc_type'       => RC_EDIT,
 283                         'rc_minor'      => $minor ? 1 : 0,
 284                         'rc_cur_id'     => $title->getArticleID(),
 285                         'rc_user'       => $user->getID(),
 286                         'rc_user_text'  => $user->getName(),
 287                         'rc_comment'    => $comment,
 288                         'rc_this_oldid' => $newId,
 289                         'rc_last_oldid' => $oldId,
 290                         'rc_bot'        => $bot ? 1 : 0,
 291                         'rc_moved_to_ns'        => 0,
 292                         'rc_moved_to_title'     => '',
 293                         'rc_ip'         => $ip,
 294                         'rc_patrolled'  => 0,
 295                         'rc_new'        => 0,  # obsolete
 296                         'rc_old_len'    => $oldSize,
 297                         'rc_new_len'    => $newSize
 298                 );
 299
 300                 $rc->mExtra =  array(
 301                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 302                         'lastTimestamp' => $lastTimestamp,
 303                         'oldSize'       => $oldSize,
 304                         'newSize'       => $newSize,
 305                 );
 306                 $rc->save();
 307                 return( $rc->mAttribs['rc_id'] );
 308         }
 309
 310         /**
 311          * Makes an entry in the database corresponding to page creation
 312          * Note: the title object must be loaded with the new id using resetArticleID()
 313          * @todo Document parameters and return
 314          */
 315         public static function notifyNew( $timestamp, &$title, $minor, &$user, $comment, $bot = 'default',
 316           $ip='', $size = 0, $newId = 0 )
 317         {
 318                 if ( !$ip ) {
 319                         $ip = wfGetIP();
 320                         if ( !$ip ) {
 321                                 $ip = '';
 322                         }
 323                 }
 324                 if ( $bot === 'default' ) {
 325                         $bot = $user->isAllowed( 'bot' );
 326                 }
 327
 328                 $rc = new RecentChange;
 329                 $rc->mAttribs = array(
 330                         'rc_timestamp'      => $timestamp,
 331                         'rc_cur_time'       => $timestamp,
 332                         'rc_namespace'      => $title->getNamespace(),
 333                         'rc_title'          => $title->getDBkey(),
 334                         'rc_type'           => RC_NEW,
 335                         'rc_minor'          => $minor ? 1 : 0,
 336                         'rc_cur_id'         => $title->getArticleID(),
 337                         'rc_user'           => $user->getID(),
 338                         'rc_user_text'      => $user->getName(),
 339                         'rc_comment'        => $comment,
 340                         'rc_this_oldid'     => $newId,
 341                         'rc_last_oldid'     => 0,
 342                         'rc_bot'            => $bot ? 1 : 0,
 343                         'rc_moved_to_ns'    => 0,
 344                         'rc_moved_to_title' => '',
 345                         'rc_ip'             => $ip,
 346                         'rc_patrolled'      => 0,
 347                         'rc_new'            => 1, # obsolete
 348                         'rc_old_len'        => 0,
 349                         'rc_new_len'        => $size
 350                 );
 351
 352                 $rc->mExtra =  array(
 353                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 354                         'lastTimestamp' => 0,
 355                         'oldSize' => 0,
 356                         'newSize' => $size
 357                 );
 358                 $rc->save();
 359                 return( $rc->mAttribs['rc_id'] );
 360         }
 361
 362         # Makes an entry in the database corresponding to a rename
 363         public static function notifyMove( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='', $overRedir = false )
 364         {
 365                 if ( !$ip ) {
 366                         $ip = wfGetIP();
 367                         if ( !$ip ) {
 368                                 $ip = '';
 369                         }
 370                 }
 371
 372                 $rc = new RecentChange;
 373                 $rc->mAttribs = array(
 374                         'rc_timestamp'  => $timestamp,
 375                         'rc_cur_time'   => $timestamp,
 376                         'rc_namespace'  => $oldTitle->getNamespace(),
 377                         'rc_title'      => $oldTitle->getDBkey(),
 378                         'rc_type'       => $overRedir ? RC_MOVE_OVER_REDIRECT : RC_MOVE,
 379                         'rc_minor'      => 0,
 380                         'rc_cur_id'     => $oldTitle->getArticleID(),
 381                         'rc_user'       => $user->getID(),
 382                         'rc_user_text'  => $user->getName(),
 383                         'rc_comment'    => $comment,
 384                         'rc_this_oldid' => 0,
 385                         'rc_last_oldid' => 0,
 386                         'rc_bot'        => $user->isAllowed( 'bot' ) ? 1 : 0,
 387                         'rc_moved_to_ns'        => $newTitle->getNamespace(),
 388                         'rc_moved_to_title'     => $newTitle->getDBkey(),
 389                         'rc_ip'         => $ip,
 390                         'rc_new'        => 0, # obsolete
 391                         'rc_patrolled'  => 1,
 392                         'rc_old_len'    => NULL,
 393                         'rc_new_len'    => NULL,
 394                 );
 395
 396                 $rc->mExtra = array(
 397                         'prefixedDBkey' => $oldTitle->getPrefixedDBkey(),
 398                         'lastTimestamp' => 0,
 399                         'prefixedMoveTo'        => $newTitle->getPrefixedDBkey()
 400                 );
 401                 $rc->save();
 402         }
 403
 404         public static function notifyMoveToNew( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
 405                 RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, false );
 406         }
 407
 408         public static function notifyMoveOverRedirect( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
 409                 RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, true );
 410         }
 411
 412         # A log entry is different to an edit in that previous revisions are
 413         # not kept
 414         public static function notifyLog( $timestamp, &$title, &$user, $comment, $ip='',
 415            $type, $action, $target, $logComment, $params )
 416         {
 417                 if ( !$ip ) {
 418                         $ip = wfGetIP();
 419                         if ( !$ip ) {
 420                                 $ip = '';
 421                         }
 422                 }
 423
 424                 $rc = new RecentChange;
 425                 $rc->mAttribs = array(
 426                         'rc_timestamp'  => $timestamp,
 427                         'rc_cur_time'   => $timestamp,
 428                         'rc_namespace'  => $title->getNamespace(),
 429                         'rc_title'      => $title->getDBkey(),
 430                         'rc_type'       => RC_LOG,
 431                         'rc_minor'      => 0,
 432                         'rc_cur_id'     => $title->getArticleID(),
 433                         'rc_user'       => $user->getID(),
 434                         'rc_user_text'  => $user->getName(),
 435                         'rc_comment'    => $comment,
 436                         'rc_this_oldid' => 0,
 437                         'rc_last_oldid' => 0,
 438                         'rc_bot'        => $user->isAllowed( 'bot' ) ? 1 : 0,
 439                         'rc_moved_to_ns'        => 0,
 440                         'rc_moved_to_title'     => '',
 441                         'rc_ip' => $ip,
 442                         'rc_patrolled' => 1,
 443                         'rc_new'        => 0, # obsolete
 444                         'rc_old_len'    => NULL,
 445                         'rc_new_len'    => NULL,
 446                 );
 447                 $rc->mExtra =  array(
 448                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 449                         'lastTimestamp' => 0,
 450                         'logType' => $type,
 451                         'logAction' => $action,
 452                         'logComment' => $logComment,
 453                         'logTarget' => $target,
 454                         'logParams' => $params
 455                 );
 456                 $rc->save();
 457         }
 458
 459         # Initialises the members of this object from a mysql row object
 460         function loadFromRow( $row )
 461         {
 462                 $this->mAttribs = get_object_vars( $row );
 463                 $this->mAttribs["rc_timestamp"] = wfTimestamp(TS_MW, $this->mAttribs["rc_timestamp"]);
 464                 $this->mExtra = array();
 465         }
 466
 467         # Makes a pseudo-RC entry from a cur row
 468         function loadFromCurRow( $row )
 469         {
 470                 $this->mAttribs = array(
 471                         'rc_timestamp' => wfTimestamp(TS_MW, $row->rev_timestamp),
 472                         'rc_cur_time' => $row->rev_timestamp,
 473                         'rc_user' => $row->rev_user,
 474                         'rc_user_text' => $row->rev_user_text,
 475                         'rc_namespace' => $row->page_namespace,
 476                         'rc_title' => $row->page_title,
 477                         'rc_comment' => $row->rev_comment,
 478                         'rc_minor' => $row->rev_minor_edit ? 1 : 0,
 479                         'rc_type' => $row->page_is_new ? RC_NEW : RC_EDIT,
 480                         'rc_cur_id' => $row->page_id,
 481                         'rc_this_oldid' => $row->rev_id,
 482                         'rc_last_oldid' => isset($row->rc_last_oldid) ? $row->rc_last_oldid : 0,
 483                         'rc_bot'        => 0,
 484                         'rc_moved_to_ns'        => 0,
 485                         'rc_moved_to_title'     => '',
 486                         'rc_ip' => '',
 487                         'rc_id' => $row->rc_id,
 488                         'rc_patrolled' => $row->rc_patrolled,
 489                         'rc_new' => $row->page_is_new, # obsolete
 490                         'rc_old_len' => $row->rc_old_len,
 491                         'rc_new_len' => $row->rc_new_len,
 492                 );
 493
 494                 $this->mExtra = array();
 495         }
 496
 497         /**
 498          * Get an attribute value
 499          *
 500          * @param $name Attribute name
 501          * @return mixed
 502          */
 503         public function getAttribute( $name ) {
 504                 return isset( $this->mAttribs[$name] ) ? $this->mAttribs[$name] : NULL;
 505         }
 506
 507         /**
 508          * Gets the end part of the diff URL associated with this object
 509          * Blank if no diff link should be displayed
 510          */
 511         function diffLinkTrail( $forceCur )
 512         {
 513                 if ( $this->mAttribs['rc_type'] == RC_EDIT ) {
 514                         $trail = "curid=" . (int)($this->mAttribs['rc_cur_id']) .
 515                                 "&oldid=" . (int)($this->mAttribs['rc_last_oldid']);
 516                         if ( $forceCur ) {
 517                                 $trail .= '&diff=0' ;
 518                         } else {
 519                                 $trail .= '&diff=' . (int)($this->mAttribs['rc_this_oldid']);
 520                         }
 521                 } else {
 522                         $trail = '';
 523                 }
 524                 return $trail;
 525         }
 526
 527         function cleanupForIRC( $text ) {
 528                 return str_replace(array("\n", "\r"), array("", ""), $text);
 529         }
 530
 531         function getIRCLine() {
 532                 global $wgUseRCPatrol;
 533
 534                 // FIXME: Would be good to replace these 2 extract() calls with something more explicit
 535                 // e.g. list ($rc_type, $rc_id) = array_values ($this->mAttribs); [or something like that]
 536                 extract($this->mAttribs);
 537                 extract($this->mExtra);
 538
 539                 $titleObj =& $this->getTitle();
 540                 if ( $rc_type == RC_LOG ) {
 541                         $title = Namespace::getCanonicalName( $titleObj->getNamespace() ) . $titleObj->getText();
 542                 } else {
 543                         $title = $titleObj->getPrefixedText();
 544                 }
 545                 $title = $this->cleanupForIRC( $title );
 546
 547                 $bad = array("\n", "\r");
 548                 $empty = array("", "");
 549                 $title = $titleObj->getPrefixedText();
 550                 $title = str_replace($bad, $empty, $title);
 551
 552                 // FIXME: *HACK* these should be getFullURL(), hacked for SSL madness --brion 2005-12-26
 553                 if ( $rc_type == RC_LOG ) {
 554                         $url = '';
 555                 } elseif ( $rc_new && $wgUseRCPatrol ) {
 556                         $url = $titleObj->getInternalURL("rcid=$rc_id");
 557                 } else if ( $rc_new ) {
 558                         $url = $titleObj->getInternalURL();
 559                 } else if ( $wgUseRCPatrol ) {
 560                         $url = $titleObj->getInternalURL("diff=$rc_this_oldid&oldid=$rc_last_oldid&rcid=$rc_id");
 561                 } else {
 562                         $url = $titleObj->getInternalURL("diff=$rc_this_oldid&oldid=$rc_last_oldid");
 563                 }
 564
 565                 if ( isset( $oldSize ) && isset( $newSize ) ) {
 566                         $szdiff = $newSize - $oldSize;
 567                         if ($szdiff < -500) {
 568                                 $szdiff = "\002$szdiff\002";
 569                         } elseif ($szdiff >= 0) {
 570                                 $szdiff = '+' . $szdiff ;
 571                         }
 572                         $szdiff = '(' . $szdiff . ')' ;
 573                 } else {
 574                         $szdiff = '';
 575                 }
 576
 577                 $user = $this->cleanupForIRC( $rc_user_text );
 578
 579                 if ( $rc_type == RC_LOG ) {
 580                         $logTargetText = $logTarget->getPrefixedText();
 581                         $comment = $this->cleanupForIRC( str_replace( $logTargetText, "\00302$logTargetText\00310", $rc_comment ) );
 582                         $flag = $logAction;
 583                 } else {
 584                         $comment = $this->cleanupForIRC( $rc_comment );
 585                         $flag = ($rc_minor ? "M" : "") . ($rc_new ? "N" : "");
 586                 }
 587                 # see http://www.irssi.org/documentation/formats for some colour codes. prefix is \003,
 588                 # no colour (\003) switches back to the term default
 589                 $fullString = "\00314[[\00307$title\00314]]\0034 $flag\00310 " .
 590                               "\00302$url\003 \0035*\003 \00303$user\003 \0035*\003 $szdiff \00310$comment\003\n";
 591                 return $fullString;
 592         }
 593
 594         /**
 595          * Returns the change size (HTML).
 596          * The lengths can be given optionally.
 597          */
 598         function getCharacterDifference( $old = 0, $new = 0 ) {
 599                 global $wgRCChangedSizeThreshold, $wgLang;
 600
 601                 if( $old === 0 ) {
 602                         $old = $this->mAttribs['rc_old_len'];
 603                 }
 604                 if( $new === 0 ) {
 605                         $new = $this->mAttribs['rc_new_len'];
 606                 }
 607
 608                 if( $old === NULL || $new === NULL ) {
 609                         return '';
 610                 }
 611
 612                 $szdiff = $new - $old;
 613                 $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape'),
 614                         $wgLang->formatNum($szdiff) );
 615
 616                 if( $szdiff < $wgRCChangedSizeThreshold ) {
 617                         return '<strong class=\'mw-plusminus-neg\'>(' . $formatedSize . ')</strong>';
 618                 } elseif( $szdiff === 0 ) {
 619                         return '<span class=\'mw-plusminus-null\'>(' . $formatedSize . ')</span>';
 620                 } elseif( $szdiff > 0 ) {
 621                         return '<span class=\'mw-plusminus-pos\'>(+' . $formatedSize . ')</span>';
 622                 } else {
 623                         return '<span class=\'mw-plusminus-neg\'>(' . $formatedSize . ')</span>';
 624                 }
 625         }
 626 }
 627
 628