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, $ip = '', $oldSize = 0, $newSize = 0,
 262                 $newId = 0)
 263         {
 264                 if ( !$ip ) {
 265                         $ip = wfGetIP();
 266                         if ( !$ip ) {
 267                                 $ip = '';
 268                         }
 269                 }
 270
 271                 $rc = new RecentChange;
 272                 $rc->mAttribs = array(
 273                         'rc_timestamp'  => $timestamp,
 274                         'rc_cur_time'   => $timestamp,
 275                         'rc_namespace'  => $title->getNamespace(),
 276                         'rc_title'      => $title->getDBkey(),
 277                         'rc_type'       => RC_EDIT,
 278                         'rc_minor'      => $minor ? 1 : 0,
 279                         'rc_cur_id'     => $title->getArticleID(),
 280                         'rc_user'       => $user->getID(),
 281                         'rc_user_text'  => $user->getName(),
 282                         'rc_comment'    => $comment,
 283                         'rc_this_oldid' => $newId,
 284                         'rc_last_oldid' => $oldId,
 285                         'rc_bot'        => $bot ? 1 : 0,
 286                         'rc_moved_to_ns'        => 0,
 287                         'rc_moved_to_title'     => '',
 288                         'rc_ip'         => $ip,
 289                         'rc_patrolled'  => 0,
 290                         'rc_new'        => 0,  # obsolete
 291                         'rc_old_len'    => $oldSize,
 292                         'rc_new_len'    => $newSize
 293                 );
 294
 295                 $rc->mExtra =  array(
 296                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 297                         'lastTimestamp' => $lastTimestamp,
 298                         'oldSize'       => $oldSize,
 299                         'newSize'       => $newSize,
 300                 );
 301                 $rc->save();
 302                 return( $rc->mAttribs['rc_id'] );
 303         }
 304
 305         /**
 306          * Makes an entry in the database corresponding to page creation
 307          * Note: the title object must be loaded with the new id using resetArticleID()
 308          * @todo Document parameters and return
 309          */
 310         public static function notifyNew( $timestamp, &$title, $minor, &$user, $comment, $bot,
 311           $ip='', $size = 0, $newId = 0 )
 312         {
 313                 if ( !$ip ) {
 314                         $ip = wfGetIP();
 315                         if ( !$ip ) {
 316                                 $ip = '';
 317                         }
 318                 }
 319
 320                 $rc = new RecentChange;
 321                 $rc->mAttribs = array(
 322                         'rc_timestamp'      => $timestamp,
 323                         'rc_cur_time'       => $timestamp,
 324                         'rc_namespace'      => $title->getNamespace(),
 325                         'rc_title'          => $title->getDBkey(),
 326                         'rc_type'           => RC_NEW,
 327                         'rc_minor'          => $minor ? 1 : 0,
 328                         'rc_cur_id'         => $title->getArticleID(),
 329                         'rc_user'           => $user->getID(),
 330                         'rc_user_text'      => $user->getName(),
 331                         'rc_comment'        => $comment,
 332                         'rc_this_oldid'     => $newId,
 333                         'rc_last_oldid'     => 0,
 334                         'rc_bot'            => $bot ? 1 : 0,
 335                         'rc_moved_to_ns'    => 0,
 336                         'rc_moved_to_title' => '',
 337                         'rc_ip'             => $ip,
 338                         'rc_patrolled'      => 0,
 339                         'rc_new'            => 1, # obsolete
 340                         'rc_old_len'        => 0,
 341                         'rc_new_len'        => $size
 342                 );
 343
 344                 $rc->mExtra =  array(
 345                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 346                         'lastTimestamp' => 0,
 347                         'oldSize' => 0,
 348                         'newSize' => $size
 349                 );
 350                 $rc->save();
 351                 return( $rc->mAttribs['rc_id'] );
 352         }
 353
 354         # Makes an entry in the database corresponding to a rename
 355         public static function notifyMove( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='', $overRedir = false )
 356         {
 357                 global $wgRequest;
 358
 359                 if ( !$ip ) {
 360                         $ip = wfGetIP();
 361                         if ( !$ip ) {
 362                                 $ip = '';
 363                         }
 364                 }
 365
 366                 $rc = new RecentChange;
 367                 $rc->mAttribs = array(
 368                         'rc_timestamp'  => $timestamp,
 369                         'rc_cur_time'   => $timestamp,
 370                         'rc_namespace'  => $oldTitle->getNamespace(),
 371                         'rc_title'      => $oldTitle->getDBkey(),
 372                         'rc_type'       => $overRedir ? RC_MOVE_OVER_REDIRECT : RC_MOVE,
 373                         'rc_minor'      => 0,
 374                         'rc_cur_id'     => $oldTitle->getArticleID(),
 375                         'rc_user'       => $user->getID(),
 376                         'rc_user_text'  => $user->getName(),
 377                         'rc_comment'    => $comment,
 378                         'rc_this_oldid' => 0,
 379                         'rc_last_oldid' => 0,
 380                         'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot' , true ) : 0,
 381                         'rc_moved_to_ns'        => $newTitle->getNamespace(),
 382                         'rc_moved_to_title'     => $newTitle->getDBkey(),
 383                         'rc_ip'         => $ip,
 384                         'rc_new'        => 0, # obsolete
 385                         'rc_patrolled'  => 1,
 386                         'rc_old_len'    => NULL,
 387                         'rc_new_len'    => NULL,
 388                 );
 389
 390                 $rc->mExtra = array(
 391                         'prefixedDBkey' => $oldTitle->getPrefixedDBkey(),
 392                         'lastTimestamp' => 0,
 393                         'prefixedMoveTo'        => $newTitle->getPrefixedDBkey()
 394                 );
 395                 $rc->save();
 396         }
 397
 398         public static function notifyMoveToNew( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
 399                 RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, false );
 400         }
 401
 402         public static function notifyMoveOverRedirect( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
 403                 RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, true );
 404         }
 405
 406         # A log entry is different to an edit in that previous revisions are
 407         # not kept
 408         public static function notifyLog( $timestamp, &$title, &$user, $comment, $ip='',
 409            $type, $action, $target, $logComment, $params )
 410         {
 411                 global $wgRequest;
 412
 413                 if ( !$ip ) {
 414                         $ip = wfGetIP();
 415                         if ( !$ip ) {
 416                                 $ip = '';
 417                         }
 418                 }
 419
 420                 $rc = new RecentChange;
 421                 $rc->mAttribs = array(
 422                         'rc_timestamp'  => $timestamp,
 423                         'rc_cur_time'   => $timestamp,
 424                         'rc_namespace'  => $title->getNamespace(),
 425                         'rc_title'      => $title->getDBkey(),
 426                         'rc_type'       => RC_LOG,
 427                         'rc_minor'      => 0,
 428                         'rc_cur_id'     => $title->getArticleID(),
 429                         'rc_user'       => $user->getID(),
 430                         'rc_user_text'  => $user->getName(),
 431                         'rc_comment'    => $comment,
 432                         'rc_this_oldid' => 0,
 433                         'rc_last_oldid' => 0,
 434                         'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot' , true ) : 0,
 435                         'rc_moved_to_ns'        => 0,
 436                         'rc_moved_to_title'     => '',
 437                         'rc_ip' => $ip,
 438                         'rc_patrolled' => 1,
 439                         'rc_new'        => 0, # obsolete
 440                         'rc_old_len'    => NULL,
 441                         'rc_new_len'    => NULL,
 442                 );
 443                 $rc->mExtra =  array(
 444                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 445                         'lastTimestamp' => 0,
 446                         'logType' => $type,
 447                         'logAction' => $action,
 448                         'logComment' => $logComment,
 449                         'logTarget' => $target,
 450                         'logParams' => $params
 451                 );
 452                 $rc->save();
 453         }
 454
 455         # Initialises the members of this object from a mysql row object
 456         function loadFromRow( $row )
 457         {
 458                 $this->mAttribs = get_object_vars( $row );
 459                 $this->mAttribs["rc_timestamp"] = wfTimestamp(TS_MW, $this->mAttribs["rc_timestamp"]);
 460                 $this->mExtra = array();
 461         }
 462
 463         # Makes a pseudo-RC entry from a cur row
 464         function loadFromCurRow( $row )
 465         {
 466                 $this->mAttribs = array(
 467                         'rc_timestamp' => wfTimestamp(TS_MW, $row->rev_timestamp),
 468                         'rc_cur_time' => $row->rev_timestamp,
 469                         'rc_user' => $row->rev_user,
 470                         'rc_user_text' => $row->rev_user_text,
 471                         'rc_namespace' => $row->page_namespace,
 472                         'rc_title' => $row->page_title,
 473                         'rc_comment' => $row->rev_comment,
 474                         'rc_minor' => $row->rev_minor_edit ? 1 : 0,
 475                         'rc_type' => $row->page_is_new ? RC_NEW : RC_EDIT,
 476                         'rc_cur_id' => $row->page_id,
 477                         'rc_this_oldid' => $row->rev_id,
 478                         'rc_last_oldid' => isset($row->rc_last_oldid) ? $row->rc_last_oldid : 0,
 479                         'rc_bot'        => 0,
 480                         'rc_moved_to_ns'        => 0,
 481                         'rc_moved_to_title'     => '',
 482                         'rc_ip' => '',
 483                         'rc_id' => $row->rc_id,
 484                         'rc_patrolled' => $row->rc_patrolled,
 485                         'rc_new' => $row->page_is_new, # obsolete
 486                         'rc_old_len' => $row->rc_old_len,
 487                         'rc_new_len' => $row->rc_new_len,
 488                 );
 489
 490                 $this->mExtra = array();
 491         }
 492
 493         /**
 494          * Get an attribute value
 495          *
 496          * @param $name Attribute name
 497          * @return mixed
 498          */
 499         public function getAttribute( $name ) {
 500                 return isset( $this->mAttribs[$name] ) ? $this->mAttribs[$name] : NULL;
 501         }
 502
 503         /**
 504          * Gets the end part of the diff URL associated with this object
 505          * Blank if no diff link should be displayed
 506          */
 507         function diffLinkTrail( $forceCur )
 508         {
 509                 if ( $this->mAttribs['rc_type'] == RC_EDIT ) {
 510                         $trail = "curid=" . (int)($this->mAttribs['rc_cur_id']) .
 511                                 "&oldid=" . (int)($this->mAttribs['rc_last_oldid']);
 512                         if ( $forceCur ) {
 513                                 $trail .= '&diff=0' ;
 514                         } else {
 515                                 $trail .= '&diff=' . (int)($this->mAttribs['rc_this_oldid']);
 516                         }
 517                 } else {
 518                         $trail = '';
 519                 }
 520                 return $trail;
 521         }
 522
 523         function cleanupForIRC( $text ) {
 524                 return str_replace(array("\n", "\r"), array("", ""), $text);
 525         }
 526
 527         function getIRCLine() {
 528                 global $wgUseRCPatrol;
 529
 530                 // FIXME: Would be good to replace these 2 extract() calls with something more explicit
 531                 // e.g. list ($rc_type, $rc_id) = array_values ($this->mAttribs); [or something like that]
 532                 extract($this->mAttribs);
 533                 extract($this->mExtra);
 534
 535                 $titleObj =& $this->getTitle();
 536                 if ( $rc_type == RC_LOG ) {
 537                         $title = Namespace::getCanonicalName( $titleObj->getNamespace() ) . $titleObj->getText();
 538                 } else {
 539                         $title = $titleObj->getPrefixedText();
 540                 }
 541                 $title = $this->cleanupForIRC( $title );
 542
 543                 $bad = array("\n", "\r");
 544                 $empty = array("", "");
 545                 $title = $titleObj->getPrefixedText();
 546                 $title = str_replace($bad, $empty, $title);
 547
 548                 // FIXME: *HACK* these should be getFullURL(), hacked for SSL madness --brion 2005-12-26
 549                 if ( $rc_type == RC_LOG ) {
 550                         $url = '';
 551                 } elseif ( $rc_new && $wgUseRCPatrol ) {
 552                         $url = $titleObj->getInternalURL("rcid=$rc_id");
 553                 } else if ( $rc_new ) {
 554                         $url = $titleObj->getInternalURL();
 555                 } else if ( $wgUseRCPatrol ) {
 556                         $url = $titleObj->getInternalURL("diff=$rc_this_oldid&oldid=$rc_last_oldid&rcid=$rc_id");
 557                 } else {
 558                         $url = $titleObj->getInternalURL("diff=$rc_this_oldid&oldid=$rc_last_oldid");
 559                 }
 560
 561                 if ( isset( $oldSize ) && isset( $newSize ) ) {
 562                         $szdiff = $newSize - $oldSize;
 563                         if ($szdiff < -500) {
 564                                 $szdiff = "\002$szdiff\002";
 565                         } elseif ($szdiff >= 0) {
 566                                 $szdiff = '+' . $szdiff ;
 567                         }
 568                         $szdiff = '(' . $szdiff . ')' ;
 569                 } else {
 570                         $szdiff = '';
 571                 }
 572
 573                 $user = $this->cleanupForIRC( $rc_user_text );
 574
 575                 if ( $rc_type == RC_LOG ) {
 576                         $logTargetText = $logTarget->getPrefixedText();
 577                         $comment = $this->cleanupForIRC( str_replace( $logTargetText, "\00302$logTargetText\00310", $rc_comment ) );
 578                         $flag = $logAction;
 579                 } else {
 580                         $comment = $this->cleanupForIRC( $rc_comment );
 581                         $flag = ($rc_minor ? "M" : "") . ($rc_new ? "N" : "");
 582                 }
 583                 # see http://www.irssi.org/documentation/formats for some colour codes. prefix is \003,
 584                 # no colour (\003) switches back to the term default
 585                 $fullString = "\00314[[\00307$title\00314]]\0034 $flag\00310 " .
 586                               "\00302$url\003 \0035*\003 \00303$user\003 \0035*\003 $szdiff \00310$comment\003\n";
 587                 return $fullString;
 588         }
 589
 590         /**
 591          * Returns the change size (HTML).
 592          * The lengths can be given optionally.
 593          */
 594         function getCharacterDifference( $old = 0, $new = 0 ) {
 595                 global $wgRCChangedSizeThreshold, $wgLang;
 596
 597                 if( $old === 0 ) {
 598                         $old = $this->mAttribs['rc_old_len'];
 599                 }
 600                 if( $new === 0 ) {
 601                         $new = $this->mAttribs['rc_new_len'];
 602                 }
 603
 604                 if( $old === NULL || $new === NULL ) {
 605                         return '';
 606                 }
 607
 608                 $szdiff = $new - $old;
 609                 $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape'),
 610                         $wgLang->formatNum($szdiff) );
 611
 612                 if( $szdiff < $wgRCChangedSizeThreshold ) {
 613                         return '<strong class=\'mw-plusminus-neg\'>(' . $formatedSize . ')</strong>';
 614                 } elseif( $szdiff === 0 ) {
 615                         return '<span class=\'mw-plusminus-null\'>(' . $formatedSize . ')</span>';
 616                 } elseif( $szdiff > 0 ) {
 617                         return '<span class=\'mw-plusminus-pos\'>(+' . $formatedSize . ')</span>';
 618                 } else {
 619                         return '<span class=\'mw-plusminus-neg\'>(' . $formatedSize . ')</span>';
 620                 }
 621         }
 622 }
 623
 624