* Returnto now works with special pages with subpage parameters
[lhc/web/wiklou.git] / includes / Revision.php
index 75a81fe..71f214e 100644 (file)
@@ -1,19 +1,17 @@
 <?php
 /**
- * @package MediaWiki
  * @todo document
  */
 
 /**
- * @package MediaWiki
  * @todo document
  */
 class Revision {
-       const DELETED_TEXT      = 1;
-       const DELETED_COMMENT   = 2;
-       const DELETED_USER      = 4;
+       const DELETED_TEXT = 1;
+       const DELETED_COMMENT = 2;
+       const DELETED_USER = 4;
        const DELETED_RESTRICTED = 8;
-       
+
        /**
         * Load a page revision from a given revision ID number.
         * Returns null if no such revision can be found.
@@ -79,7 +77,7 @@ class Revision {
         * @access public
         * @static
         */
-       public static function loadFromPageId( &$db, $pageid, $id = 0 ) {
+       public static function loadFromPageId( $db, $pageid, $id = 0 ) {
                $conds=array('page_id=rev_page','rev_page'=>intval( $pageid ), 'page_id'=>intval( $pageid ));
                if( $id ) {
                        $conds['rev_id']=intval($id);
@@ -145,10 +143,10 @@ class Revision {
         * @static
         */
        private static function newFromConds( $conditions ) {
-               $db =& wfGetDB( DB_SLAVE );
+               $db = wfGetDB( DB_SLAVE );
                $row = Revision::loadFromConds( $db, $conditions );
                if( is_null( $row ) ) {
-                       $dbw =& wfGetDB( DB_MASTER );
+                       $dbw = wfGetDB( DB_MASTER );
                        $row = Revision::loadFromConds( $dbw, $conditions );
                }
                return $row;
@@ -164,7 +162,7 @@ class Revision {
         * @access private
         * @static
         */
-       private static function loadFromConds( &$db, $conditions ) {
+       private static function loadFromConds( $db, $conditions ) {
                $res = Revision::fetchFromConds( $db, $conditions );
                if( $res ) {
                        $row = $res->fetchObject();
@@ -226,7 +224,7 @@ class Revision {
         * @access private
         * @static
         */
-       private static function fetchFromConds( &$db, $conditions ) {
+       private static function fetchFromConds( $db, $conditions ) {
                $res = $db->select(
                        array( 'page', 'revision' ),
                        array( 'page_namespace',
@@ -240,7 +238,8 @@ class Revision {
                               'rev_user',
                               'rev_minor_edit',
                               'rev_timestamp',
-                              'rev_deleted' ),
+                              'rev_deleted',
+                              'rev_len' ),
                        $conditions,
                        'Revision::fetchRow',
                        array( 'LIMIT' => 1 ) );
@@ -248,6 +247,25 @@ class Revision {
                return $ret;
        }
 
+       /**
+        * Return the list of revision fields that should be selected to create 
+        * a new revision.
+        */
+       static function selectFields() {
+               return array( 
+                       'rev_id',
+                       'rev_page',
+                       'rev_text_id',
+                       'rev_timestamp',
+                       'rev_comment',
+                       'rev_minor_edit',
+                       'rev_user',
+                       'rev_user_text,'.
+                       'rev_deleted',
+                       'rev_len'
+               );
+       }
+
        /**
         * @param object $row
         * @access private
@@ -263,6 +281,11 @@ class Revision {
                        $this->mMinorEdit = intval( $row->rev_minor_edit );
                        $this->mTimestamp =         $row->rev_timestamp;
                        $this->mDeleted   = intval( $row->rev_deleted );
+                       
+                       if( !isset( $row->rev_len ) || is_null( $row->rev_len ) )
+                               $this->mSize = null;
+                       else
+                               $this->mSize = intval( $row->rev_len ); 
 
                        if( isset( $row->page_latest ) ) {
                                $this->mCurrent   = ( $row->rev_id == $row->page_latest );
@@ -293,7 +316,8 @@ class Revision {
                        $this->mMinorEdit = isset( $row['minor_edit'] ) ? intval( $row['minor_edit'] ) : 0;
                        $this->mTimestamp = isset( $row['timestamp']  ) ? strval( $row['timestamp']  ) : wfTimestamp( TS_MW );
                        $this->mDeleted   = isset( $row['deleted']    ) ? intval( $row['deleted']    ) : 0;
-
+                       $this->mSize      = isset( $row['len']        ) ? intval( $row['len']        ) : null;
+                       
                        // Enforce spacing trimming on supplied text
                        $this->mComment   = isset( $row['comment']    ) ?  trim( strval( $row['comment'] ) ) : null;
                        $this->mText      = isset( $row['text']       ) ? rtrim( strval( $row['text']    ) ) : null;
@@ -301,6 +325,9 @@ class Revision {
 
                        $this->mTitle     = null; # Load on demand if needed
                        $this->mCurrent   = false;
+                       # If we still have no len_size, see it we have the text to figure it out
+                       if ( !$this->mSize )
+                               $this->mSize      = is_null($this->mText) ? null : strlen($this->mText);
                } else {
                        throw new MWException( 'Revision constructor passed invalid row format.' );
                }
@@ -324,6 +351,13 @@ class Revision {
                return $this->mTextId;
        }
 
+       /**
+        * Returns the length of the text in this revision, or null if unknown.
+        */
+       function getSize() {
+               return $this->mSize;
+       }
+
        /**
         * Returns the title of the page associated with this entry.
         * @return Title
@@ -332,7 +366,7 @@ class Revision {
                if( isset( $this->mTitle ) ) {
                        return $this->mTitle;
                }
-               $dbr =& wfGetDB( DB_SLAVE );
+               $dbr = wfGetDB( DB_SLAVE );
                $row = $dbr->selectRow(
                        array( 'page', 'revision' ),
                        array( 'page_namespace', 'page_title' ),
@@ -459,6 +493,18 @@ class Revision {
                }
                return $this->mText;
        }
+       
+       /**
+        * Fetch revision text if it's available to THIS user
+        * @return string
+        */
+       function revText() {
+               if( !$this->userCan( self::DELETED_TEXT ) ) {
+                       return "";
+               } else {
+                       return $this->getRawText();
+               }
+       }
 
        /**
         * @return string
@@ -508,7 +554,7 @@ class Revision {
          * @param string $prefix table prefix (default 'old_')
          * @return string $text|false the text requested
          */
-       function getRevisionText( $row, $prefix = 'old_' ) {
+       public static function getRevisionText( $row, $prefix = 'old_' ) {
                $fname = 'Revision::getRevisionText';
                wfProfileIn( $fname );
 
@@ -565,7 +611,7 @@ class Revision {
                                # Old revisions kept around in a legacy encoding?
                                # Upconvert on demand.
                                global $wgInputEncoding, $wgContLang;
-                               $text = $wgContLang->iconv( $wgLegacyEncoding, $wgInputEncoding . '//IGNORE', $text );
+                               $text = $wgContLang->iconv( $wgLegacyEncoding, $wgInputEncoding, $text );
                        }
                }
                wfProfileOut( $fname );
@@ -666,6 +712,7 @@ class Revision {
                                'rev_user_text'  => $this->mUserText,
                                'rev_timestamp'  => $dbw->timestamp( $this->mTimestamp ),
                                'rev_deleted'    => $this->mDeleted,
+                               'rev_len'            => $this->mSize,
                        ), $fname
                );
 
@@ -706,7 +753,7 @@ class Revision {
                
                if( !$row ) {
                        // Text data is immutable; check slaves first.
-                       $dbr =& wfGetDB( DB_SLAVE );
+                       $dbr = wfGetDB( DB_SLAVE );
                        $row = $dbr->selectRow( 'text',
                                array( 'old_text', 'old_flags' ),
                                array( 'old_id' => $this->getTextId() ),
@@ -715,7 +762,7 @@ class Revision {
 
                if( !$row ) {
                        // Possible slave lag!
-                       $dbw =& wfGetDB( DB_MASTER );
+                       $dbw = wfGetDB( DB_MASTER );
                        $row = $dbw->selectRow( 'text',
                                array( 'old_text', 'old_flags' ),
                                array( 'old_id' => $this->getTextId() ),
@@ -802,12 +849,12 @@ class Revision {
         * @param integer $id
         */
        static function getTimestampFromID( $id ) {
-               $dbr =& wfGetDB( DB_SLAVE );
+               $dbr = wfGetDB( DB_SLAVE );
                $timestamp = $dbr->selectField( 'revision', 'rev_timestamp', 
                        array( 'rev_id' => $id ), __METHOD__ );
                if ( $timestamp === false ) {
                        # Not in slave, try master
-                       $dbw =& wfGetDB( DB_MASTER );
+                       $dbw = wfGetDB( DB_MASTER );
                        $timestamp = $dbw->selectField( 'revision', 'rev_timestamp', 
                                array( 'rev_id' => $id ), __METHOD__ );
                }