(bug 19441) Updated date formatting for Lithuanian

[mediawiki.git] / includes / RecentChange.php

<?php

/**
 * Utility class for creating new RC entries
 * mAttribs:
 *      rc_id           id of the row in the recentchanges table
 *      rc_timestamp    time the entry was made
 *      rc_cur_time     timestamp on the cur row
 *      rc_namespace    namespace #
 *      rc_title        non-prefixed db key
 *      rc_type         is new entry, used to determine whether updating is necessary
 *      rc_minor        is minor
 *      rc_cur_id       page_id of associated page entry
 *      rc_user         user id who made the entry
 *      rc_user_text    user name who made the entry
 *      rc_comment      edit summary
 *      rc_this_oldid   rev_id associated with this entry (or zero)
 *      rc_last_oldid   rev_id associated with the entry before this one (or zero)
 *      rc_bot          is bot, hidden
 *      rc_ip           IP address of the user in dotted quad notation
 *      rc_new          obsolete, use rc_type==RC_NEW
 *      rc_patrolled    boolean whether or not someone has marked this edit as patrolled
 *      rc_old_len      integer byte length of the text before the edit
 *      rc_new_len      the same after the edit
  *     rc_deleted              partial deletion
 *      rc_logid                the log_id value for this log entry (or zero)
 *  rc_log_type         the log type (or null)
 *      rc_log_action   the log action (or null)
 *  rc_params           log params
 *
 * mExtra:
 *      prefixedDBkey   prefixed db key, used by external app via msg queue
 *      lastTimestamp   timestamp of previous entry, used in WHERE clause during update
 *      lang            the interwiki prefix, automatically set in save()
 *  oldSize         text size before the change
 *  newSize         text size after the change
 *
 * temporary:           not stored in the database
 *      notificationtimestamp
 *      numberofWatchingusers
 *
 * @todo document functions and variables
 */
class RecentChange
{
        var $mAttribs = array(), $mExtra = array();
        var $mTitle = false, $mMovedToTitle = false;
        var $numberofWatchingusers = 0 ; # Dummy to prevent error message in SpecialRecentchangeslinked

        # Factory methods

        public static function newFromRow( $row ) {
                $rc = new RecentChange;
                $rc->loadFromRow( $row );
                return $rc;
        }

        public static function newFromCurRow( $row ) {
                $rc = new RecentChange;
                $rc->loadFromCurRow( $row );
                $rc->notificationtimestamp = false;
                $rc->numberofWatchingusers = false;
                return $rc;
        }

        /**
         * Obtain the recent change with a given rc_id value
         *
         * @param $rcid rc_id value to retrieve
         * @return RecentChange
         */
        public static function newFromId( $rcid ) {
                $dbr = wfGetDB( DB_SLAVE );
                $res = $dbr->select( 'recentchanges', '*', array( 'rc_id' => $rcid ), __METHOD__ );
                if( $res && $dbr->numRows( $res ) > 0 ) {
                        $row = $dbr->fetchObject( $res );
                        $dbr->freeResult( $res );
                        return self::newFromRow( $row );
                } else {
                        return NULL;
                }
        }

        /**
         * Find the first recent change matching some specific conditions
         *
         * @param array $conds Array of conditions
         * @param mixed $fname Override the method name in profiling/logs
         * @return RecentChange
         */
        public static function newFromConds( $conds, $fname = false ) {
                if( $fname === false )
                        $fname = __METHOD__;
                $dbr = wfGetDB( DB_SLAVE );
                $res = $dbr->select(
                        'recentchanges',
                        '*',
                        $conds,
                        $fname
                );
                if( $res instanceof ResultWrapper && $res->numRows() > 0 ) {
                        $row = $res->fetchObject();
                        $res->free();
                        return self::newFromRow( $row );
                }
                return null;
        }

        # Accessors

        public function setAttribs( $attribs ) {
                $this->mAttribs = $attribs;
        }

        public function setExtra( $extra ) {
                $this->mExtra = $extra;
        }

        public function &getTitle() {
                if( $this->mTitle === false ) {
                        $this->mTitle = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
                        # Make sure the correct page ID is process cached
                        $this->mTitle->resetArticleID( $this->mAttribs['rc_cur_id'] );
                }
                return $this->mTitle;
        }

        public function getMovedToTitle() {
                if( $this->mMovedToTitle === false ) {
                        $this->mMovedToTitle = Title::makeTitle( $this->mAttribs['rc_moved_to_ns'],
                                $this->mAttribs['rc_moved_to_title'] );
                }
                return $this->mMovedToTitle;
        }

        # Writes the data in this object to the database
        public function save() {
                global $wgLocalInterwiki, $wgPutIPinRC, $wgRC2UDPAddress, $wgRC2UDPOmitBots;
                $fname = 'RecentChange::save';

                $dbw = wfGetDB( DB_MASTER );
                if( !is_array($this->mExtra) ) {
                        $this->mExtra = array();
                }
                $this->mExtra['lang'] = $wgLocalInterwiki;

                if( !$wgPutIPinRC ) {
                        $this->mAttribs['rc_ip'] = '';
                }

                # If our database is strict about IP addresses, use NULL instead of an empty string
                if( $dbw->strictIPs() and $this->mAttribs['rc_ip'] == '' ) {
                        unset( $this->mAttribs['rc_ip'] );
                }

                # Fixup database timestamps
                $this->mAttribs['rc_timestamp'] = $dbw->timestamp($this->mAttribs['rc_timestamp']);
                $this->mAttribs['rc_cur_time'] = $dbw->timestamp($this->mAttribs['rc_cur_time']);
                $this->mAttribs['rc_id'] = $dbw->nextSequenceValue( 'rc_rc_id_seq' );

                ## If we are using foreign keys, an entry of 0 for the page_id will fail, so use NULL
                if( $dbw->cascadingDeletes() and $this->mAttribs['rc_cur_id']==0 ) {
                        unset( $this->mAttribs['rc_cur_id'] );
                }

                # Insert new row
                $dbw->insert( 'recentchanges', $this->mAttribs, $fname );

                # Set the ID
                $this->mAttribs['rc_id'] = $dbw->insertId();
                
                # Notify extensions
                wfRunHooks( 'RecentChange_save', array( &$this ) );

                # Notify external application via UDP
                if( $wgRC2UDPAddress && ( !$this->mAttribs['rc_bot'] || !$wgRC2UDPOmitBots ) ) {
                        self::sendToUDP( $this->getIRCLine() );
                }

                # E-mail notifications
                global $wgUseEnotif, $wgShowUpdatedMarker, $wgUser;
                if( $wgUseEnotif || $wgShowUpdatedMarker ) {
                        // Users
                        if( $this->mAttribs['rc_user'] ) {
                                $editor = ($wgUser->getId() == $this->mAttribs['rc_user']) ? 
                                        $wgUser : User::newFromID( $this->mAttribs['rc_user'] );
                        // Anons
                        } else {
                                $editor = ($wgUser->getName() == $this->mAttribs['rc_user_text']) ? 
                                        $wgUser : User::newFromName( $this->mAttribs['rc_user_text'], false );
                        }
                        # FIXME: this would be better as an extension hook
                        $enotif = new EmailNotification();
                        $title = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
                        $enotif->notifyOnPageChange( $editor, $title,
                                $this->mAttribs['rc_timestamp'],
                                $this->mAttribs['rc_comment'],
                                $this->mAttribs['rc_minor'],
                                $this->mAttribs['rc_last_oldid'] );
                }
        }
        
        public function notifyRC2UDP() {
                global $wgRC2UDPAddress, $wgRC2UDPOmitBots;
                # Notify external application via UDP
                if( $wgRC2UDPAddress && ( !$this->mAttribs['rc_bot'] || !$wgRC2UDPOmitBots ) ) {
                        self::sendToUDP( $this->getIRCLine() );
                }
        }

        /**
         * Send some text to UDP
         * @param string $line
         * @param string $prefix
         * @param string $address
         * @return bool success
         */
        public static function sendToUDP( $line, $address = '', $prefix = '' ) {
                global $wgRC2UDPAddress, $wgRC2UDPPrefix, $wgRC2UDPPort;
                # Assume default for standard RC case
                $address = $address ? $address : $wgRC2UDPAddress;
                $prefix = $prefix ? $prefix : $wgRC2UDPPrefix;
                # Notify external application via UDP
                if( $address ) {
                        $conn = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
                        if( $conn ) {
                                $line = $prefix . $line;
                                wfDebug( __METHOD__ . ": sending UDP line: $line\n" );
                                socket_sendto( $conn, $line, strlen($line), 0, $address, $wgRC2UDPPort );
                                socket_close( $conn );
                                return true;
                        } else {
                                wfDebug( __METHOD__ . ": failed to create UDP socket\n" );
                        }
                }
                return false;
        }
        
        /**
         * Remove newlines, carriage returns and decode html entites
         * @param string $line
         * @return string
         */
        public static function cleanupForIRC( $text ) {
                return Sanitizer::decodeCharReferences( str_replace( array( "\n", "\r" ), array( "", "" ), $text ) );
        }

        /**
         * Mark a given change as patrolled
         *
         * @param mixed $change RecentChange or corresponding rc_id
         * @param bool $auto for automatic patrol
         * @return See doMarkPatrolled(), or null if $change is not an existing rc_id
         */
        public static function markPatrolled( $change, $auto = false ) {
                $change = $change instanceof RecentChange
                        ? $change
                        : RecentChange::newFromId($change);
                if( !$change instanceof RecentChange ) {
                        return null;
                }
                return $change->doMarkPatrolled( $auto );
        }
        
        /**
         * Mark this RecentChange as patrolled
         *
         * NOTE: Can also return 'rcpatroldisabled', 'hookaborted' and 'markedaspatrollederror-noautopatrol' as errors
         * @param bool $auto for automatic patrol
         * @return array of permissions errors, see Title::getUserPermissionsErrors()
         */
        public function doMarkPatrolled( $auto = false ) {
                global $wgUser, $wgUseRCPatrol, $wgUseNPPatrol;
                $errors = array();
                // If recentchanges patrol is disabled, only new pages
                // can be patrolled
                if( !$wgUseRCPatrol && ( !$wgUseNPPatrol || $this->getAttribute('rc_type') != RC_NEW ) ) {
                        $errors[] = array('rcpatroldisabled');
                }
                // Automatic patrol needs "autopatrol", ordinary patrol needs "patrol"
                $right = $auto ? 'autopatrol' : 'patrol';
                $errors = array_merge( $errors, $this->getTitle()->getUserPermissionsErrors( $right, $wgUser ) );
                if( !wfRunHooks('MarkPatrolled', array($this->getAttribute('rc_id'), &$wgUser, false)) ) {
                        $errors[] = array('hookaborted');
                }
                // Users without the 'autopatrol' right can't patrol their
                // own revisions
                if( $wgUser->getName() == $this->getAttribute('rc_user_text') && !$wgUser->isAllowed('autopatrol') ) {
                        $errors[] = array('markedaspatrollederror-noautopatrol');
                }
                if( $errors ) {
                        return $errors;
                }
                // If the change was patrolled already, do nothing
                if( $this->getAttribute('rc_patrolled') ) {
                        return array();
                }
                // Actually set the 'patrolled' flag in RC
                $this->reallyMarkPatrolled();
                // Log this patrol event
                PatrolLog::record( $this, $auto );
                wfRunHooks( 'MarkPatrolledComplete', array($this->getAttribute('rc_id'), &$wgUser, false) );
                return array();
        }
        
        /**
         * Mark this RecentChange patrolled, without error checking
         * @return int Number of affected rows
         */
        public function reallyMarkPatrolled() {
                $dbw = wfGetDB( DB_MASTER );
                $dbw->update(
                        'recentchanges',
                        array(
                                'rc_patrolled' => 1
                        ),
                        array(
                                'rc_id' => $this->getAttribute('rc_id')
                        ),
                        __METHOD__
                );
                return $dbw->affectedRows();
        }

        # Makes an entry in the database corresponding to an edit
        public static function notifyEdit( $timestamp, &$title, $minor, &$user, $comment, $oldId,
                $lastTimestamp, $bot, $ip='', $oldSize=0, $newSize=0, $newId=0, $patrol=0 )
        {
                if( !$ip ) {
                        $ip = wfGetIP();
                        if( !$ip ) $ip = '';
                }

                $rc = new RecentChange;
                $rc->mAttribs = array(
                        'rc_timestamp'  => $timestamp,
                        'rc_cur_time'   => $timestamp,
                        'rc_namespace'  => $title->getNamespace(),
                        'rc_title'      => $title->getDBkey(),
                        'rc_type'       => RC_EDIT,
                        'rc_minor'      => $minor ? 1 : 0,
                        'rc_cur_id'     => $title->getArticleID(),
                        'rc_user'       => $user->getId(),
                        'rc_user_text'  => $user->getName(),
                        'rc_comment'    => $comment,
                        'rc_this_oldid' => $newId,
                        'rc_last_oldid' => $oldId,
                        'rc_bot'        => $bot ? 1 : 0,
                        'rc_moved_to_ns'        => 0,
                        'rc_moved_to_title'     => '',
                        'rc_ip'         => $ip,
                        'rc_patrolled'  => intval($patrol),
                        'rc_new'        => 0,  # obsolete
                        'rc_old_len'    => $oldSize,
                        'rc_new_len'    => $newSize,
                        'rc_deleted'    => 0,
                        'rc_logid'              => 0,
                        'rc_log_type'   => null,
                        'rc_log_action' => '',
                        'rc_params'             => ''
                );

                $rc->mExtra =  array(
                        'prefixedDBkey' => $title->getPrefixedDBkey(),
                        'lastTimestamp' => $lastTimestamp,
                        'oldSize'       => $oldSize,
                        'newSize'       => $newSize,
                );
                $rc->save();
                return $rc;
        }

        /**
         * Makes an entry in the database corresponding to page creation
         * Note: the title object must be loaded with the new id using resetArticleID()
         * @todo Document parameters and return
         */
        public static function notifyNew( $timestamp, &$title, $minor, &$user, $comment, $bot,
                $ip='', $size=0, $newId=0, $patrol=0 )
        {
                if( !$ip ) {
                        $ip = wfGetIP();
                        if( !$ip ) $ip = '';
                }

                $rc = new RecentChange;
                $rc->mAttribs = array(
                        'rc_timestamp'      => $timestamp,
                        'rc_cur_time'       => $timestamp,
                        'rc_namespace'      => $title->getNamespace(),
                        'rc_title'          => $title->getDBkey(),
                        'rc_type'           => RC_NEW,
                        'rc_minor'          => $minor ? 1 : 0,
                        'rc_cur_id'         => $title->getArticleID(),
                        'rc_user'           => $user->getId(),
                        'rc_user_text'      => $user->getName(),
                        'rc_comment'        => $comment,
                        'rc_this_oldid'     => $newId,
                        'rc_last_oldid'     => 0,
                        'rc_bot'            => $bot ? 1 : 0,
                        'rc_moved_to_ns'    => 0,
                        'rc_moved_to_title' => '',
                        'rc_ip'             => $ip,
                        'rc_patrolled'      => intval($patrol),
                        'rc_new'                => 1, # obsolete
                        'rc_old_len'        => 0,
                        'rc_new_len'        => $size,
                        'rc_deleted'            => 0,
                        'rc_logid'                      => 0,
                        'rc_log_type'           => null,
                        'rc_log_action'         => '',
                        'rc_params'                     => ''
                );

                $rc->mExtra =  array(
                        'prefixedDBkey' => $title->getPrefixedDBkey(),
                        'lastTimestamp' => 0,
                        'oldSize' => 0,
                        'newSize' => $size
                );
                $rc->save();
                return $rc;     
        }

        # Makes an entry in the database corresponding to a rename
        public static function notifyMove( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='', $overRedir = false )
        {
                global $wgRequest;
                if( !$ip ) {
                        $ip = wfGetIP();
                        if( !$ip ) $ip = '';
                }

                $rc = new RecentChange;
                $rc->mAttribs = array(
                        'rc_timestamp'  => $timestamp,
                        'rc_cur_time'   => $timestamp,
                        'rc_namespace'  => $oldTitle->getNamespace(),
                        'rc_title'      => $oldTitle->getDBkey(),
                        'rc_type'       => $overRedir ? RC_MOVE_OVER_REDIRECT : RC_MOVE,
                        'rc_minor'      => 0,
                        'rc_cur_id'     => $oldTitle->getArticleID(),
                        'rc_user'       => $user->getId(),
                        'rc_user_text'  => $user->getName(),
                        'rc_comment'    => $comment,
                        'rc_this_oldid' => 0,
                        'rc_last_oldid' => 0,
                        'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot' , true ) : 0,
                        'rc_moved_to_ns'        => $newTitle->getNamespace(),
                        'rc_moved_to_title'     => $newTitle->getDBkey(),
                        'rc_ip'         => $ip,
                        'rc_new'        => 0, # obsolete
                        'rc_patrolled'  => 1,
                        'rc_old_len'    => NULL,
                        'rc_new_len'    => NULL,
                        'rc_deleted'    => 0,
                        'rc_logid'              => 0, # notifyMove not used anymore
                        'rc_log_type'   => null,
                        'rc_log_action' => '',
                        'rc_params'             => ''
                );

                $rc->mExtra = array(
                        'prefixedDBkey' => $oldTitle->getPrefixedDBkey(),
                        'lastTimestamp' => 0,
                        'prefixedMoveTo'        => $newTitle->getPrefixedDBkey()
                );
                $rc->save();
        }

        public static function notifyMoveToNew( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
                RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, false );
        }

        public static function notifyMoveOverRedirect( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
                RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, true );
        }

        public static function notifyLog( $timestamp, &$title, &$user, $actionComment, $ip='', $type, 
                $action, $target, $logComment, $params, $newId=0 )
        {
                global $wgLogRestrictions;
                # Don't add private logs to RC!
                if( isset($wgLogRestrictions[$type]) && $wgLogRestrictions[$type] != '*' ) {
                        return false;
                }
                $rc = self::newLogEntry( $timestamp, $title, $user, $actionComment, $ip, $type, $action,
                        $target, $logComment, $params, $newId );
                $rc->save();
                return true;
        }

        public static function newLogEntry( $timestamp, &$title, &$user, $actionComment, $ip='',
                $type, $action, $target, $logComment, $params, $newId=0 )
        {
                global $wgRequest;
                if( !$ip ) {
                        $ip = wfGetIP();
                        if( !$ip ) $ip = '';
                }

                $rc = new RecentChange;
                $rc->mAttribs = array(
                        'rc_timestamp'  => $timestamp,
                        'rc_cur_time'   => $timestamp,
                        'rc_namespace'  => $target->getNamespace(),
                        'rc_title'      => $target->getDBkey(),
                        'rc_type'       => RC_LOG,
                        'rc_minor'      => 0,
                        'rc_cur_id'     => $target->getArticleID(),
                        'rc_user'       => $user->getId(),
                        'rc_user_text'  => $user->getName(),
                        'rc_comment'    => $logComment,
                        'rc_this_oldid' => 0,
                        'rc_last_oldid' => 0,
                        'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot', true ) : 0,
                        'rc_moved_to_ns'        => 0,
                        'rc_moved_to_title'     => '',
                        'rc_ip' => $ip,
                        'rc_patrolled' => 1,
                        'rc_new'        => 0, # obsolete
                        'rc_old_len'    => NULL,
                        'rc_new_len'    => NULL,
                        'rc_deleted'    => 0,
                        'rc_logid'              => $newId,
                        'rc_log_type'   => $type,
                        'rc_log_action' => $action,
                        'rc_params'             => $params
                );
                $rc->mExtra =  array(
                        'prefixedDBkey' => $title->getPrefixedDBkey(),
                        'lastTimestamp' => 0,
                        'actionComment' => $actionComment, // the comment appended to the action, passed from LogPage
                );
                return $rc;
        }

        # Initialises the members of this object from a mysql row object
        public function loadFromRow( $row ) {
                $this->mAttribs = get_object_vars( $row );
                $this->mAttribs['rc_timestamp'] = wfTimestamp(TS_MW, $this->mAttribs['rc_timestamp']);
                $this->mAttribs['rc_deleted'] = $row->rc_deleted; // MUST be set
        }

        # Makes a pseudo-RC entry from a cur row
        public function loadFromCurRow( $row ) {
                $this->mAttribs = array(
                        'rc_timestamp' => wfTimestamp(TS_MW, $row->rev_timestamp),
                        'rc_cur_time' => $row->rev_timestamp,
                        'rc_user' => $row->rev_user,
                        'rc_user_text' => $row->rev_user_text,
                        'rc_namespace' => $row->page_namespace,
                        'rc_title' => $row->page_title,
                        'rc_comment' => $row->rev_comment,
                        'rc_minor' => $row->rev_minor_edit ? 1 : 0,
                        'rc_type' => $row->page_is_new ? RC_NEW : RC_EDIT,
                        'rc_cur_id' => $row->page_id,
                        'rc_this_oldid' => $row->rev_id,
                        'rc_last_oldid' => isset($row->rc_last_oldid) ? $row->rc_last_oldid : 0,
                        'rc_bot'        => 0,
                        'rc_moved_to_ns'        => 0,
                        'rc_moved_to_title'     => '',
                        'rc_ip' => '',
                        'rc_id' => $row->rc_id,
                        'rc_patrolled' => $row->rc_patrolled,
                        'rc_new' => $row->page_is_new, # obsolete
                        'rc_old_len' => $row->rc_old_len,
                        'rc_new_len' => $row->rc_new_len,
                        'rc_params' => isset($row->rc_params) ? $row->rc_params : '',
                        'rc_log_type' => isset($row->rc_log_type) ? $row->rc_log_type : null,
                        'rc_log_action' => isset($row->rc_log_action) ? $row->rc_log_action : null,
                        'rc_log_id' => isset($row->rc_log_id) ? $row->rc_log_id: 0,
                        'rc_deleted' => $row->rc_deleted // MUST be set
                );
        }

        /**
         * Get an attribute value
         *
         * @param $name Attribute name
         * @return mixed
         */
        public function getAttribute( $name ) {
                return isset( $this->mAttribs[$name] ) ? $this->mAttribs[$name] : NULL;
        }

        /**
         * Gets the end part of the diff URL associated with this object
         * Blank if no diff link should be displayed
         */
        public function diffLinkTrail( $forceCur ) {
                if( $this->mAttribs['rc_type'] == RC_EDIT ) {
                        $trail = "curid=" . (int)($this->mAttribs['rc_cur_id']) .
                                "&oldid=" . (int)($this->mAttribs['rc_last_oldid']);
                        if( $forceCur ) {
                                $trail .= '&diff=0' ;
                        } else {
                                $trail .= '&diff=' . (int)($this->mAttribs['rc_this_oldid']);
                        }
                } else {
                        $trail = '';
                }
                return $trail;
        }

        public function getIRCLine() {
                global $wgUseRCPatrol, $wgUseNPPatrol, $wgRC2UDPInterwikiPrefix, $wgLocalInterwiki;

                // FIXME: Would be good to replace these 2 extract() calls with something more explicit
                // e.g. list ($rc_type, $rc_id) = array_values ($this->mAttribs); [or something like that]
                extract($this->mAttribs);
                extract($this->mExtra);

                if( $rc_type == RC_LOG ) {
                        $titleObj = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
                } else {
                        $titleObj =& $this->getTitle();
                }
                $title = $titleObj->getPrefixedText();
                $title = self::cleanupForIRC( $title );

                if( $rc_type == RC_LOG ) {
                        $url = '';
                } else {
                        if( $rc_type == RC_NEW ) {
                                $url = "oldid=$rc_this_oldid";
                        } else {
                                $url = "diff=$rc_this_oldid&oldid=$rc_last_oldid";
                        }
                        if( $wgUseRCPatrol || ($rc_type == RC_NEW && $wgUseNPPatrol) ) {
                                $url .= "&rcid=$rc_id";
                        }
                        // XXX: *HACK* this should use getFullURL(), hacked for SSL madness --brion 2005-12-26
                        // XXX: *HACK^2* the preg_replace() undoes much of what getInternalURL() does, but we 
                        // XXX: need to call it so that URL paths on the Wikimedia secure server can be fixed
                        // XXX: by a custom GetInternalURL hook --vyznev 2008-12-10
                        $url = preg_replace( '/title=[^&]*&/', '', $titleObj->getInternalURL( $url ) );
                }

                if( isset( $oldSize ) && isset( $newSize ) ) {
                        $szdiff = $newSize - $oldSize;
                        if($szdiff < -500) {
                                $szdiff = "\002$szdiff\002";
                        } elseif($szdiff >= 0) {
                                $szdiff = '+' . $szdiff ;
                        }
                        $szdiff = '(' . $szdiff . ')' ;
                } else {
                        $szdiff = '';
                }

                $user = self::cleanupForIRC( $rc_user_text );

                if( $rc_type == RC_LOG ) {
                        $targetText = $this->getTitle()->getPrefixedText();
                        $comment = self::cleanupForIRC( str_replace("[[$targetText]]","[[\00302$targetText\00310]]",$actionComment) );
                        $flag = $rc_log_action;
                } else {
                        $comment = self::cleanupForIRC( $rc_comment );
                        $flag = '';
                        if( !$rc_patrolled && ($wgUseRCPatrol || $rc_new && $wgUseNPPatrol) ) {
                                $flag .= '!';
                        }
                        $flag .= ($rc_new ? "N" : "") . ($rc_minor ? "M" : "") . ($rc_bot ? "B" : "");
                }

                if ( $wgRC2UDPInterwikiPrefix === true ) {
                        $prefix = $wgLocalInterwiki;
                } elseif ( $wgRC2UDPInterwikiPrefix ) {
                        $prefix = $wgRC2UDPInterwikiPrefix;
                } else {
                        $prefix = false;
                }
                if ( $prefix !== false ) {
                        $titleString = "\00314[[\00303$prefix:\00307$title\00314]]";
                } else {
                        $titleString = "\00314[[\00307$title\00314]]";
                }
                
                # see http://www.irssi.org/documentation/formats for some colour codes. prefix is \003,
                # no colour (\003) switches back to the term default
                $fullString = "$titleString\0034 $flag\00310 " .
                              "\00302$url\003 \0035*\003 \00303$user\003 \0035*\003 $szdiff \00310$comment\003\n";
                        
                return $fullString;
        }

        /**
         * Returns the change size (HTML).
         * The lengths can be given optionally.
         */
        public function getCharacterDifference( $old = 0, $new = 0 ) {
                if( $old === 0 ) {
                        $old = $this->mAttribs['rc_old_len'];
                }
                if( $new === 0 ) {
                        $new = $this->mAttribs['rc_new_len'];
                }
                if( $old === NULL || $new === NULL ) {
                        return '';
                }
                return ChangesList::showCharacterDifference( $old, $new );
        }
}