Update to MediaWiki 1.19.0

1 files changed, 0 insertions, 1576 deletions

diff --git a/includes/filerepo/File.php b/includes/filerepo/File.php
deleted file mode 100644
index 1fd6d452..00000000
--- a/includes/filerepo/File.php
+++ /dev/null
@@ -1,1576 +0,0 @@
-<?php
-/**
- * Base code for files.
- *
- * @file
- * @ingroup FileRepo
- */
-
-/**
- * Implements some public methods and some protected utility functions which
- * are required by multiple child classes. Contains stub functionality for
- * unimplemented public methods.
- *
- * Stub functions which should be overridden are marked with STUB. Some more
- * concrete functions are also typically overridden by child classes.
- *
- * Note that only the repo object knows what its file class is called. You should
- * never name a file class explictly outside of the repo class. Instead use the
- * repo's factory functions to generate file objects, for example:
- *
- * RepoGroup::singleton()->getLocalRepo()->newFile($title);
- *
- * The convenience functions wfLocalFile() and wfFindFile() should be sufficient
- * in most cases.
- *
- * @ingroup FileRepo
- */
-abstract class File {
-	const DELETED_FILE = 1;
-	const DELETED_COMMENT = 2;
-	const DELETED_USER = 4;
-	const DELETED_RESTRICTED = 8;
-	const RENDER_NOW = 1;
-
-	const DELETE_SOURCE = 1;
-
-	/**
-	 * Some member variables can be lazy-initialised using __get(). The
-	 * initialisation function for these variables is always a function named
-	 * like getVar(), where Var is the variable name with upper-case first
-	 * letter.
-	 *
-	 * The following variables are initialised in this way in this base class:
-	 *    name, extension, handler, path, canRender, isSafeFile,
-	 *    transformScript, hashPath, pageCount, url
-	 *
-	 * Code within this class should generally use the accessor function
-	 * directly, since __get() isn't re-entrant and therefore causes bugs that
-	 * depend on initialisation order.
-	 */
-
-	/**
-	 * The following member variables are not lazy-initialised
-	 */
-
-	/**
-	 * @var LocalRepo
-	 */
-	var $repo;
-
-	/**
-	 * @var Title
-	 */
-	var $title;
-
-	var $lastError, $redirected, $redirectedTitle;
-
-	/**
-	 * @var MediaHandler
-	 */
-	protected $handler;
-
-	/**
-	 * Call this constructor from child classes
-	 */
-	function __construct( $title, $repo ) {
-		$this->title = $title;
-		$this->repo = $repo;
-	}
-
-	function __get( $name ) {
-		$function = array( $this, 'get' . ucfirst( $name ) );
-		if ( !is_callable( $function ) ) {
-			return null;
-		} else {
-			$this->$name = call_user_func( $function );
-			return $this->$name;
-		}
-	}
-
-	/**
-	 * Normalize a file extension to the common form, and ensure it's clean.
-	 * Extensions with non-alphanumeric characters will be discarded.
-	 *
-	 * @param $ext string (without the .)
-	 * @return string
-	 */
-	static function normalizeExtension( $ext ) {
-		$lower = strtolower( $ext );
-		$squish = array(
-			'htm' => 'html',
-			'jpeg' => 'jpg',
-			'mpeg' => 'mpg',
-			'tiff' => 'tif',
-			'ogv' => 'ogg' );
-		if( isset( $squish[$lower] ) ) {
-			return $squish[$lower];
-		} elseif( preg_match( '/^[0-9a-z]+$/', $lower ) ) {
-			return $lower;
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * Checks if file extensions are compatible
-	 *
-	 * @param $old File Old file
-	 * @param $new string New name
-	 *
-	 * @return bool|null
-	 */
-	static function checkExtensionCompatibility( File $old, $new ) {
-		$oldMime = $old->getMimeType();
-		$n = strrpos( $new, '.' );
-		$newExt = self::normalizeExtension(
-			$n ? substr( $new, $n + 1 ) : '' );
-		$mimeMagic = MimeMagic::singleton();
-		return $mimeMagic->isMatchingExtension( $newExt, $oldMime );
-	}
-
-	/**
-	 * Upgrade the database row if there is one
-	 * Called by ImagePage
-	 * STUB
-	 */
-	function upgradeRow() {}
-
-	/**
-	 * Split an internet media type into its two components; if not
-	 * a two-part name, set the minor type to 'unknown'.
-	 *
-	 * @param string $mime "text/html" etc
-	 * @return array ("text", "html") etc
-	 */
-	public static function splitMime( $mime ) {
-		if( strpos( $mime, '/' ) !== false ) {
-			return explode( '/', $mime, 2 );
-		} else {
-			return array( $mime, 'unknown' );
-		}
-	}
-
-	/**
-	 * Return the name of this file
-	 *
-	 * @return string
-	 */
-	public function getName() {
-		if ( !isset( $this->name ) ) {
-			$this->name = $this->repo->getNameFromTitle( $this->title );
-		}
-		return $this->name;
-	}
-
-	/**
-	 * Get the file extension, e.g. "svg"
-	 *
-	 * @return string
-	 */
-	function getExtension() {
-		if ( !isset( $this->extension ) ) {
-			$n = strrpos( $this->getName(), '.' );
-			$this->extension = self::normalizeExtension(
-				$n ? substr( $this->getName(), $n + 1 ) : '' );
-		}
-		return $this->extension;
-	}
-
-	/**
-	 * Return the associated title object
-	 * @return Title
-	 */
-	public function getTitle() { return $this->title; }
-
-	/**
-	 * Return the title used to find this file
-	 *
-	 * @return Title
-	 */
-	public function getOriginalTitle() {
-		if ( $this->redirected ) {
-			return $this->getRedirectedTitle();
-		}
-		return $this->title;
-	}
-
-	/**
-	 * Return the URL of the file
-	 *
-	 * @return string
-	 */
-	public function getUrl() {
-		if ( !isset( $this->url ) ) {
-			$this->url = $this->repo->getZoneUrl( 'public' ) . '/' . $this->getUrlRel();
-		}
-		return $this->url;
-	}
-
-	/**
-	 * Return a fully-qualified URL to the file.
-	 * Upload URL paths _may or may not_ be fully qualified, so
-	 * we check. Local paths are assumed to belong on $wgServer.
-	 *
-	 * @return String
-	 */
-	public function getFullUrl() {
-		return wfExpandUrl( $this->getUrl(), PROTO_RELATIVE );
-	}
-
-	public function getCanonicalUrl() {
-		return wfExpandUrl( $this->getUrl(), PROTO_CANONICAL );
-	}
-
-	/**
-	 * @return string
-	 */
-	function getViewURL() {
-		if( $this->mustRender()) {
-			if( $this->canRender() ) {
-				return $this->createThumb( $this->getWidth() );
-			} else {
-				wfDebug(__METHOD__.': supposed to render '.$this->getName().' ('.$this->getMimeType()."), but can't!\n");
-				return $this->getURL(); #hm... return NULL?
-			}
-		} else {
-			return $this->getURL();
-		}
-	}
-
-	/**
-	* Return the full filesystem path to the file. Note that this does
-	* not mean that a file actually exists under that location.
-	*
-	* This path depends on whether directory hashing is active or not,
-	* i.e. whether the files are all found in the same directory,
-	* or in hashed paths like /images/3/3c.
-	*
-	* Most callers don't check the return value, but ForeignAPIFile::getPath
-	* returns false.
-	 *
-	 * @return string|false
-	*/
-	public function getPath() {
-		if ( !isset( $this->path ) ) {
-			$this->path = $this->repo->getZonePath('public') . '/' . $this->getRel();
-		}
-		return $this->path;
-	}
-
-	/**
-	 * Alias for getPath()
-	 *
-	 * @deprecated since 1.18 Use getPath().
-	 *
-	 * @return string
-	 */
-	public function getFullPath() {
-		wfDeprecated( __METHOD__ );
-		return $this->getPath();
-	}
-
-	/**
-	 * Return the width of the image. Returns false if the width is unknown
-	 * or undefined.
-	 *
-	 * STUB
-	 * Overridden by LocalFile, UnregisteredLocalFile
-	 *
-	 * @param $page int
-	 *
-	 * @return number
-	 */
-	public function getWidth( $page = 1 ) {
-		return false;
-	}
-
-	/**
-	 * Return the height of the image. Returns false if the height is unknown
-	 * or undefined
-	 *
-	 * STUB
-	 * Overridden by LocalFile, UnregisteredLocalFile
-	 *
-	 * @return false|number
-	 */
-	public function getHeight( $page = 1 ) {
-		return false;
-	}
-
-	/**
-	 * Returns ID or name of user who uploaded the file
-	 * STUB
-	 *
-	 * @param $type string 'text' or 'id'
-	 *
-	 * @return string|int
-	 */
-	public function getUser( $type = 'text' ) {
-		return null;
-	}
-
-	/**
-	 * Get the duration of a media file in seconds
-	 *
-	 * @return number
-	 */
-	public function getLength() {
-		$handler = $this->getHandler();
-		if ( $handler ) {
-			return $handler->getLength( $this );
-		} else {
-			return 0;
-		}
-	}
-
-	/**
-	 * Return true if the file is vectorized
-	 *
-	 * @return bool
-	 */
-	public function isVectorized() {
-		$handler = $this->getHandler();
-		if ( $handler ) {
-			return $handler->isVectorized( $this );
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Get handler-specific metadata
-	 * Overridden by LocalFile, UnregisteredLocalFile
-	 * STUB
-	 */
-	public function getMetadata() {
-		return false;
-	}
-
-	/**
-	* get versioned metadata
-	*
-	* @param $metadata Mixed Array or String of (serialized) metadata
-	* @param $version integer version number.
-	* @return Array containing metadata, or what was passed to it on fail (unserializing if not array)
-	*/
-	public function convertMetadataVersion($metadata, $version) {
-		$handler = $this->getHandler();
-		if ( !is_array( $metadata ) ) {
-			//just to make the return type consistant
-			$metadata = unserialize( $metadata );
-		}
-		if ( $handler ) {
-			return $handler->convertMetadataVersion( $metadata, $version );
-		} else {
-			return $metadata;
-		}
-	}
-
-	/**
-	 * Return the bit depth of the file
-	 * Overridden by LocalFile
-	 * STUB
-	 */
-	public function getBitDepth() {
-		return 0;
-	}
-
-	/**
-	 * Return the size of the image file, in bytes
-	 * Overridden by LocalFile, UnregisteredLocalFile
-	 * STUB
-	 */
-	public function getSize() {
-		return false;
-	}
-
-	/**
-	 * Returns the mime type of the file.
-	 * Overridden by LocalFile, UnregisteredLocalFile
-	 * STUB
-	 *
-	 * @return string
-	 */
-	function getMimeType() {
-		return 'unknown/unknown';
-	}
-
-	/**
-	 * Return the type of the media in the file.
-	 * Use the value returned by this function with the MEDIATYPE_xxx constants.
-	 * Overridden by LocalFile,
-	 * STUB
-	 */
-	function getMediaType() { return MEDIATYPE_UNKNOWN; }
-
-	/**
-	 * Checks if the output of transform() for this file is likely
-	 * to be valid. If this is false, various user elements will
-	 * display a placeholder instead.
-	 *
-	 * Currently, this checks if the file is an image format
-	 * that can be converted to a format
-	 * supported by all browsers (namely GIF, PNG and JPEG),
-	 * or if it is an SVG image and SVG conversion is enabled.
-	 *
-	 * @return bool
-	 */
-	function canRender() {
-		if ( !isset( $this->canRender ) ) {
-			$this->canRender = $this->getHandler() && $this->handler->canRender( $this );
-		}
-		return $this->canRender;
-	}
-
-	/**
-	 * Accessor for __get()
-	 */
-	protected function getCanRender() {
-		return $this->canRender();
-	}
-
-	/**
-	 * Return true if the file is of a type that can't be directly
-	 * rendered by typical browsers and needs to be re-rasterized.
-	 *
-	 * This returns true for everything but the bitmap types
-	 * supported by all browsers, i.e. JPEG; GIF and PNG. It will
-	 * also return true for any non-image formats.
-	 *
-	 * @return bool
-	 */
-	function mustRender() {
-		return $this->getHandler() && $this->handler->mustRender( $this );
-	}
-
-	/**
-	 * Alias for canRender()
-	 *
-	 * @return bool
-	 */
-	function allowInlineDisplay() {
-		return $this->canRender();
-	}
-
-	/**
-	 * Determines if this media file is in a format that is unlikely to
-	 * contain viruses or malicious content. It uses the global
-	 * $wgTrustedMediaFormats list to determine if the file is safe.
-	 *
-	 * This is used to show a warning on the description page of non-safe files.
-	 * It may also be used to disallow direct [[media:...]] links to such files.
-	 *
-	 * Note that this function will always return true if allowInlineDisplay()
-	 * or isTrustedFile() is true for this file.
-	 *
-	 * @return bool
-	 */
-	function isSafeFile() {
-		if ( !isset( $this->isSafeFile ) ) {
-			$this->isSafeFile = $this->_getIsSafeFile();
-		}
-		return $this->isSafeFile;
-	}
-
-	/**
-	 * Accessor for __get()
-	 *
-	 * @return bool
-	 */
-	protected function getIsSafeFile() {
-		return $this->isSafeFile();
-	}
-
-	/**
-	 * Uncached accessor
-	 *
-	 * @return bool
-	 */
-	protected function _getIsSafeFile() {
-		if ( $this->allowInlineDisplay() ) {
-			return true;
-		}
-		if ($this->isTrustedFile()) {
-			return true;
-		}
-
-		global $wgTrustedMediaFormats;
-
-		$type = $this->getMediaType();
-		$mime = $this->getMimeType();
-		#wfDebug("LocalFile::isSafeFile: type= $type, mime= $mime\n");
-
-		if ( !$type || $type === MEDIATYPE_UNKNOWN ) {
-			return false; #unknown type, not trusted
-		}
-		if ( in_array( $type, $wgTrustedMediaFormats ) ) {
-			return true;
-		}
-
-		if ( $mime === "unknown/unknown" ) {
-			return false; #unknown type, not trusted
-		}
-		if ( in_array( $mime, $wgTrustedMediaFormats) ) {
-			return true;
-		}
-
-		return false;
-	}
-
-	/**
-	 * Returns true if the file is flagged as trusted. Files flagged that way
-	 * can be linked to directly, even if that is not allowed for this type of
-	 * file normally.
-	 *
-	 * This is a dummy function right now and always returns false. It could be
-	 * implemented to extract a flag from the database. The trusted flag could be
-	 * set on upload, if the user has sufficient privileges, to bypass script-
-	 * and html-filters. It may even be coupled with cryptographics signatures
-	 * or such.
-	 *
-	 * @return bool
-	 */
-	function isTrustedFile() {
-		#this could be implemented to check a flag in the databas,
-		#look for signatures, etc
-		return false;
-	}
-
-	/**
-	 * Returns true if file exists in the repository.
-	 *
-	 * Overridden by LocalFile to avoid unnecessary stat calls.
-	 *
-	 * @return boolean Whether file exists in the repository.
-	 */
-	public function exists() {
-		return $this->getPath() && file_exists( $this->path );
-	}
-
-	/**
-	 * Returns true if file exists in the repository and can be included in a page.
-	 * It would be unsafe to include private images, making public thumbnails inadvertently
-	 *
-	 * @return boolean Whether file exists in the repository and is includable.
-	 */
-	public function isVisible() {
-		return $this->exists();
-	}
-
-	/**
-	 * @return string
-	 */
-	function getTransformScript() {
-		if ( !isset( $this->transformScript ) ) {
-			$this->transformScript = false;
-			if ( $this->repo ) {
-				$script = $this->repo->getThumbScriptUrl();
-				if ( $script ) {
-					$this->transformScript = "$script?f=" . urlencode( $this->getName() );
-				}
-			}
-		}
-		return $this->transformScript;
-	}
-
-	/**
-	 * Get a ThumbnailImage which is the same size as the source
-	 *
-	 * @param $handlerParams array
-	 *
-	 * @return string
-	 */
-	function getUnscaledThumb( $handlerParams = array() ) {
-		$hp =& $handlerParams;
-		$page = isset( $hp['page'] ) ? $hp['page'] : false;
-		$width = $this->getWidth( $page );
-		if ( !$width ) {
-			return $this->iconThumb();
-		}
-		$hp['width'] = $width;
-		return $this->transform( $hp );
-	}
-
-	/**
-	 * Return the file name of a thumbnail with the specified parameters
-	 *
-	 * @param $params Array: handler-specific parameters
-	 * @private -ish
-	 *
-	 * @return string
-	 */
-	function thumbName( $params ) {
-		return $this->generateThumbName( $this->getName(), $params );
-	}
-
-	/**
-	 * Generate a thumbnail file name from a name and specified parameters
-	 *
-	 * @param string $name
-	 * @param array $params Parameters which will be passed to MediaHandler::makeParamString
-	 *
-	 * @return string
-	 */
-	function generateThumbName( $name, $params ) {
-		if ( !$this->getHandler() ) {
-			return null;
-		}
-		$extension = $this->getExtension();
-		list( $thumbExt, $thumbMime ) = $this->handler->getThumbType( $extension, $this->getMimeType(), $params );
-		$thumbName = $this->handler->makeParamString( $params ) . '-' . $name;
-		if ( $thumbExt != $extension ) {
-			$thumbName .= ".$thumbExt";
-		}
-		return $thumbName;
-	}
-
-	/**
-	 * Create a thumbnail of the image having the specified width/height.
-	 * The thumbnail will not be created if the width is larger than the
-	 * image's width. Let the browser do the scaling in this case.
-	 * The thumbnail is stored on disk and is only computed if the thumbnail
-	 * file does not exist OR if it is older than the image.
-	 * Returns the URL.
-	 *
-	 * Keeps aspect ratio of original image. If both width and height are
-	 * specified, the generated image will be no bigger than width x height,
-	 * and will also have correct aspect ratio.
-	 *
-	 * @param $width Integer: maximum width of the generated thumbnail
-	 * @param $height Integer: maximum height of the image (optional)
-	 *
-	 * @return string
-	 */
-	public function createThumb( $width, $height = -1 ) {
-		$params = array( 'width' => $width );
-		if ( $height != -1 ) {
-			$params['height'] = $height;
-		}
-		$thumb = $this->transform( $params );
-		if( is_null( $thumb ) || $thumb->isError() ) return '';
-		return $thumb->getUrl();
-	}
-
-	/**
-	 * Transform a media file
-	 *
-	 * @param $params Array: an associative array of handler-specific parameters.
-	 *                Typical keys are width, height and page.
-	 * @param $flags Integer: a bitfield, may contain self::RENDER_NOW to force rendering
-	 * @return MediaTransformOutput | false
-	 */
-	function transform( $params, $flags = 0 ) {
-		global $wgUseSquid, $wgIgnoreImageErrors, $wgThumbnailEpoch, $wgServer;
-
-		wfProfileIn( __METHOD__ );
-		do {
-			if ( !$this->canRender() ) {
-				// not a bitmap or renderable image, don't try.
-				$thumb = $this->iconThumb();
-				break;
-			}
-
-			// Get the descriptionUrl to embed it as comment into the thumbnail. Bug 19791.
-			$descriptionUrl =  $this->getDescriptionUrl();
-			if ( $descriptionUrl ) {
-				$params['descriptionUrl'] = wfExpandUrl( $descriptionUrl, PROTO_CANONICAL );
-			}
-
-			$script = $this->getTransformScript();
-			if ( $script && !($flags & self::RENDER_NOW) ) {
-				// Use a script to transform on client request, if possible
-				$thumb = $this->handler->getScriptedTransform( $this, $script, $params );
-				if( $thumb ) {
-					break;
-				}
-			}
-
-			$normalisedParams = $params;
-			$this->handler->normaliseParams( $this, $normalisedParams );
-			$thumbName = $this->thumbName( $normalisedParams );
-			$thumbPath = $this->getThumbPath( $thumbName );
-			$thumbUrl = $this->getThumbUrl( $thumbName );
-
-			if ( $this->repo && $this->repo->canTransformVia404() && !($flags & self::RENDER_NOW ) ) {
-				$thumb = $this->handler->getTransform( $this, $thumbPath, $thumbUrl, $params );
-				break;
-			}
-
-			wfDebug( __METHOD__.": Doing stat for $thumbPath\n" );
-			$this->migrateThumbFile( $thumbName );
-			if ( file_exists( $thumbPath )) {
-				$thumbTime = filemtime( $thumbPath );
-				if ( $thumbTime !== FALSE &&
-					gmdate( 'YmdHis', $thumbTime ) >= $wgThumbnailEpoch ) {
-
-					$thumb = $this->handler->getTransform( $this, $thumbPath, $thumbUrl, $params );
-					break;
-				}
-			}
-			$thumb = $this->handler->doTransform( $this, $thumbPath, $thumbUrl, $params );
-
-			// Ignore errors if requested
-			if ( !$thumb ) {
-				$thumb = null;
-			} elseif ( $thumb->isError() ) {
-				$this->lastError = $thumb->toText();
-				if ( $wgIgnoreImageErrors && !($flags & self::RENDER_NOW) ) {
-					$thumb = $this->handler->getTransform( $this, $thumbPath, $thumbUrl, $params );
-				}
-			}
-
-			// Purge. Useful in the event of Core -> Squid connection failure or squid
-			// purge collisions from elsewhere during failure. Don't keep triggering for
-			// "thumbs" which have the main image URL though (bug 13776)
-			if ( $wgUseSquid && ( !$thumb || $thumb->isError() || $thumb->getUrl() != $this->getURL()) ) {
-				SquidUpdate::purge( array( $thumbUrl ) );
-			}
-		} while (false);
-
-		wfProfileOut( __METHOD__ );
-		return is_object( $thumb ) ? $thumb : false;
-	}
-
-	/**
-	 * Hook into transform() to allow migration of thumbnail files
-	 * STUB
-	 * Overridden by LocalFile
-	 */
-	function migrateThumbFile( $thumbName ) {}
-
-	/**
-	 * Get a MediaHandler instance for this file
-	 * @return MediaHandler
-	 */
-	function getHandler() {
-		if ( !isset( $this->handler ) ) {
-			$this->handler = MediaHandler::getHandler( $this->getMimeType() );
-		}
-		return $this->handler;
-	}
-
-	/**
-	 * Get a ThumbnailImage representing a file type icon
-	 * @return ThumbnailImage
-	 */
-	function iconThumb() {
-		global $wgStylePath, $wgStyleDirectory;
-
-		$try = array( 'fileicon-' . $this->getExtension() . '.png', 'fileicon.png' );
-		foreach( $try as $icon ) {
-			$path = '/common/images/icons/' . $icon;
-			$filepath = $wgStyleDirectory . $path;
-			if( file_exists( $filepath ) ) {
-				return new ThumbnailImage( $this, $wgStylePath . $path, 120, 120 );
-			}
-		}
-		return null;
-	}
-
-	/**
-	 * Get last thumbnailing error.
-	 * Largely obsolete.
-	 */
-	function getLastError() {
-		return $this->lastError;
-	}
-
-	/**
-	 * Get all thumbnail names previously generated for this file
-	 * STUB
-	 * Overridden by LocalFile
-	 */
-	function getThumbnails() {
-		return array();
-	}
-
-	/**
-	 * Purge shared caches such as thumbnails and DB data caching
-	 * STUB
-	 * Overridden by LocalFile
-	 */
-	function purgeCache() {}
-
-	/**
-	 * Purge the file description page, but don't go after
-	 * pages using the file. Use when modifying file history
-	 * but not the current data.
-	 */
-	function purgeDescription() {
-		$title = $this->getTitle();
-		if ( $title ) {
-			$title->invalidateCache();
-			$title->purgeSquid();
-		}
-	}
-
-	/**
-	 * Purge metadata and all affected pages when the file is created,
-	 * deleted, or majorly updated.
-	 */
-	function purgeEverything() {
-		// Delete thumbnails and refresh file metadata cache
-		$this->purgeCache();
-		$this->purgeDescription();
-
-		// Purge cache of all pages using this file
-		$title = $this->getTitle();
-		if ( $title ) {
-			$update = new HTMLCacheUpdate( $title, 'imagelinks' );
-			$update->doUpdate();
-		}
-	}
-
-	/**
-	 * Return a fragment of the history of file.
-	 *
-	 * STUB
-	 * @param $limit integer Limit of rows to return
-	 * @param $start timestamp Only revisions older than $start will be returned
-	 * @param $end timestamp Only revisions newer than $end will be returned
-	 * @param $inc bool Include the endpoints of the time range
-	 *
-	 * @return array
-	 */
-	function getHistory($limit = null, $start = null, $end = null, $inc=true) {
-		return array();
-	}
-
-	/**
-	 * Return the history of this file, line by line. Starts with current version,
-	 * then old versions. Should return an object similar to an image/oldimage
-	 * database row.
-	 *
-	 * STUB
-	 * Overridden in LocalFile
-	 */
-	public function nextHistoryLine() {
-		return false;
-	}
-
-	/**
-	 * Reset the history pointer to the first element of the history.
-	 * Always call this function after using nextHistoryLine() to free db resources
-	 * STUB
-	 * Overridden in LocalFile.
-	 */
-	public function resetHistory() {}
-
-	/**
-	 * Get the filename hash component of the directory including trailing slash,
-	 * e.g. f/fa/
-	 * If the repository is not hashed, returns an empty string.
-	 *
-	 * @return string
-	 */
-	function getHashPath() {
-		if ( !isset( $this->hashPath ) ) {
-			$this->hashPath = $this->repo->getHashPath( $this->getName() );
-		}
-		return $this->hashPath;
-	}
-
-	/**
-	 * Get the path of the file relative to the public zone root
-	 *
-	 * @return string
-	 */
-	function getRel() {
-		return $this->getHashPath() . $this->getName();
-	}
-
-	/**
-	 * Get urlencoded relative path of the file
-	 *
-	 * @return string
-	 */
-	function getUrlRel() {
-		return $this->getHashPath() . rawurlencode( $this->getName() );
-	}
-
-	/**
-	 * Get the relative path for an archived file
-	 *
-	 * @param $suffix bool|string if not false, the name of an archived thumbnail file
-	 *
-	 * @return string
-	 */
-	function getArchiveRel( $suffix = false ) {
-		$path = 'archive/' . $this->getHashPath();
-		if ( $suffix === false ) {
-			$path = substr( $path, 0, -1 );
-		} else {
-			$path .= $suffix;
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the relative path for an archived file's thumbs directory
-	 * or a specific thumb if the $suffix is given.
-	 *
-	 * @param $archiveName string the timestamped name of an archived image
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 */
-	function getArchiveThumbRel( $archiveName, $suffix = false ) {
-		$path = 'archive/' . $this->getHashPath() . $archiveName . "/";
-		if ( $suffix === false ) {
-			$path = substr( $path, 0, -1 );
-		} else {
-			$path .= $suffix;
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the path of the archived file.
-	 *
-	 * @param $suffix bool|string if not false, the name of an archived file.
-	 *
-	 * @return string
-	 */
-	function getArchivePath( $suffix = false ) {
-		return $this->repo->getZonePath( 'public' ) . '/' . $this->getArchiveRel( $suffix );
-	}
-
-	/**
-	 * Get the path of the archived file's thumbs, or a particular thumb if $suffix is specified
-	 *
-	 * @param $archiveName string the timestamped name of an archived image
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return string
-	 */
-	function getArchiveThumbPath( $archiveName, $suffix = false ) {
-		return $this->repo->getZonePath( 'thumb' ) . '/' . $this->getArchiveThumbRel( $archiveName, $suffix );
-	}
-
-	/**
-	 * Get the path of the thumbnail directory, or a particular file if $suffix is specified
-	 *
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return string
-	 */
-	function getThumbPath( $suffix = false ) {
-		$path = $this->repo->getZonePath( 'thumb' ) . '/' . $this->getRel();
-		if ( $suffix !== false ) {
-			$path .= '/' . $suffix;
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the URL of the archive directory, or a particular file if $suffix is specified
-	 *
-	 * @param $suffix bool|string if not false, the name of an archived file
-	 *
-	 * @return string
-	 */
-	function getArchiveUrl( $suffix = false ) {
-		$path = $this->repo->getZoneUrl('public') . '/archive/' . $this->getHashPath();
-		if ( $suffix === false ) {
-			$path = substr( $path, 0, -1 );
-		} else {
-			$path .= rawurlencode( $suffix );
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the URL of the archived file's thumbs, or a particular thumb if $suffix is specified
-	 *
-	 * @param $archiveName string the timestamped name of an archived image
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return string
-	 */
-	function getArchiveThumbUrl( $archiveName, $suffix = false ) {
-		$path = $this->repo->getZoneUrl('thumb') . '/archive/' . $this->getHashPath() . rawurlencode( $archiveName ) . "/";
-		if ( $suffix === false ) {
-			$path = substr( $path, 0, -1 );
-		} else {
-			$path .= rawurlencode( $suffix );
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the URL of the thumbnail directory, or a particular file if $suffix is specified
-	 *
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return path
-	 */
-	function getThumbUrl( $suffix = false ) {
-		$path = $this->repo->getZoneUrl('thumb') . '/' . $this->getUrlRel();
-		if ( $suffix !== false ) {
-			$path .= '/' . rawurlencode( $suffix );
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the virtual URL for an archived file's thumbs, or a specific thumb.
-	 *
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return string
-	 */
-	function getArchiveVirtualUrl( $suffix = false ) {
-		$path = $this->repo->getVirtualUrl() . '/public/archive/' . $this->getHashPath();
-		if ( $suffix === false ) {
-			$path = substr( $path, 0, -1 );
-		} else {
-			$path .= rawurlencode( $suffix );
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the virtual URL for a thumbnail file or directory
-	 *
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return string
-	 */
-	function getThumbVirtualUrl( $suffix = false ) {
-		$path = $this->repo->getVirtualUrl() . '/thumb/' . $this->getUrlRel();
-		if ( $suffix !== false ) {
-			$path .= '/' . rawurlencode( $suffix );
-		}
-		return $path;
-	}
-
-	/**
-	 * Get the virtual URL for the file itself
-	 *
-	 * @param $suffix bool|string if not false, the name of a thumbnail file
-	 *
-	 * @return string
-	 */
-	function getVirtualUrl( $suffix = false ) {
-		$path = $this->repo->getVirtualUrl() . '/public/' . $this->getUrlRel();
-		if ( $suffix !== false ) {
-			$path .= '/' . rawurlencode( $suffix );
-		}
-		return $path;
-	}
-
-	/**
-	 * @return bool
-	 */
-	function isHashed() {
-		return $this->repo->isHashed();
-	}
-
-	/**
-	 * @throws MWException
-	 */
-	function readOnlyError() {
-		throw new MWException( get_class($this) . ': write operations are not supported' );
-	}
-
-	/**
-	 * Record a file upload in the upload log and the image table
-	 * STUB
-	 * Overridden by LocalFile
-	 * @param $oldver
-	 * @param $desc
-	 * @param $license string
-	 * @param $copyStatus string
-	 * @param $source string
-	 * @param $watch bool
-	 */
-	function recordUpload( $oldver, $desc, $license = '', $copyStatus = '', $source = '', $watch = false ) {
-		$this->readOnlyError();
-	}
-
-	/**
-	 * Move or copy a file to its public location. If a file exists at the
-	 * destination, move it to an archive. Returns a FileRepoStatus object with
-	 * the archive name in the "value" member on success.
-	 *
-	 * The archive name should be passed through to recordUpload for database
-	 * registration.
-	 *
-	 * @param $srcPath String: local filesystem path to the source image
-	 * @param $flags Integer: a bitwise combination of:
-	 *     File::DELETE_SOURCE    Delete the source file, i.e. move
-	 *         rather than copy
-	 * @return FileRepoStatus object. On success, the value member contains the
-	 *     archive name, or an empty string if it was a new file.
-	 *
-	 * STUB
-	 * Overridden by LocalFile
-	 */
-	function publish( $srcPath, $flags = 0 ) {
-		$this->readOnlyError();
-	}
-
-	/**
-	 * @return bool
-	 */
-	function formatMetadata() {
-		if ( !$this->getHandler() ) {
-			return false;
-		}
-		return $this->getHandler()->formatMetadata( $this, $this->getMetadata() );
-	}
-
-	/**
-	 * Returns true if the file comes from the local file repository.
-	 *
-	 * @return bool
-	 */
-	function isLocal() {
-		$repo = $this->getRepo();
-		return $repo && $repo->isLocal();
-	}
-
-	/**
-	 * Returns the name of the repository.
-	 *
-	 * @return string
-	 */
-	function getRepoName() {
-		return $this->repo ? $this->repo->getName() : 'unknown';
-	}
-
-	/**
-	 * Returns the repository
-	 *
-	 * @return FileRepo
-	 */
-	function getRepo() {
-		return $this->repo;
-	}
-
-	/**
-	 * Returns true if the image is an old version
-	 * STUB
-	 *
-	 * @return bool
-	 */
-	function isOld() {
-		return false;
-	}
-
-	/**
-	 * Is this file a "deleted" file in a private archive?
-	 * STUB
-	 *
-	 * @param $field
-	 *
-	 * @return bool
-	 */
-	function isDeleted( $field ) {
-		return false;
-	}
-
-	/**
-	 * Return the deletion bitfield
-	 * STUB
-	 */
-	function getVisibility() {
-		return 0;
-	}
-
-	/**
-	 * Was this file ever deleted from the wiki?
-	 *
-	 * @return bool
-	 */
-	function wasDeleted() {
-		$title = $this->getTitle();
-		return $title && $title->isDeletedQuick();
-	}
-
-	/**
-	 * Move file to the new title
-	 *
-	 * Move current, old version and all thumbnails
-	 * to the new filename. Old file is deleted.
-	 *
-	 * Cache purging is done; checks for validity
-	 * and logging are caller's responsibility
-	 *
-	 * @param $target Title New file name
-	 * @return FileRepoStatus object.
-	 */
-	 function move( $target ) {
-		$this->readOnlyError();
-	 }
-
-	/**
-	 * Delete all versions of the file.
-	 *
-	 * Moves the files into an archive directory (or deletes them)
-	 * and removes the database rows.
-	 *
-	 * Cache purging is done; logging is caller's responsibility.
-	 *
-	 * @param $reason String
-	 * @param $suppress Boolean: hide content from sysops?
-	 * @return true on success, false on some kind of failure
-	 * STUB
-	 * Overridden by LocalFile
-	 */
-	function delete( $reason, $suppress = false ) {
-		$this->readOnlyError();
-	}
-
-	/**
-	 * Restore all or specified deleted revisions to the given file.
-	 * Permissions and logging are left to the caller.
-	 *
-	 * May throw database exceptions on error.
-	 *
-	 * @param $versions array set of record ids of deleted items to restore,
-	 *                    or empty to restore all revisions.
-	 * @param $unsuppress bool remove restrictions on content upon restoration?
-	 * @return int|false the number of file revisions restored if successful,
-	 *         or false on failure
-	 * STUB
-	 * Overridden by LocalFile
-	 */
-	function restore( $versions = array(), $unsuppress = false ) {
-		$this->readOnlyError();
-	}
-
-	/**
-	 * Returns 'true' if this file is a type which supports multiple pages,
-	 * e.g. DJVU or PDF. Note that this may be true even if the file in
-	 * question only has a single page.
-	 *
-	 * @return Bool
-	 */
-	function isMultipage() {
-		return $this->getHandler() && $this->handler->isMultiPage( $this );
-	}
-
-	/**
-	 * Returns the number of pages of a multipage document, or false for
-	 * documents which aren't multipage documents
-	 *
-	 * @return false|int
-	 */
-	function pageCount() {
-		if ( !isset( $this->pageCount ) ) {
-			if ( $this->getHandler() && $this->handler->isMultiPage( $this ) ) {
-				$this->pageCount = $this->handler->pageCount( $this );
-			} else {
-				$this->pageCount = false;
-			}
-		}
-		return $this->pageCount;
-	}
-
-	/**
-	 * Calculate the height of a thumbnail using the source and destination width
-	 *
-	 * @param $srcWidth
-	 * @param $srcHeight
-	 * @param $dstWidth
-	 *
-	 * @return int
-	 */
-	static function scaleHeight( $srcWidth, $srcHeight, $dstWidth ) {
-		// Exact integer multiply followed by division
-		if ( $srcWidth == 0 ) {
-			return 0;
-		} else {
-			return round( $srcHeight * $dstWidth / $srcWidth );
-		}
-	}
-
-	/**
-	 * Get an image size array like that returned by getImageSize(), or false if it
-	 * can't be determined.
-	 *
-	 * @param $fileName String: The filename
-	 * @return Array
-	 */
-	function getImageSize( $fileName ) {
-		if ( !$this->getHandler() ) {
-			return false;
-		}
-		return $this->handler->getImageSize( $this, $fileName );
-	}
-
-	/**
-	 * Get the URL of the image description page. May return false if it is
-	 * unknown or not applicable.
-	 *
-	 * @return string
-	 */
-	function getDescriptionUrl() {
-		return $this->repo->getDescriptionUrl( $this->getName() );
-	}
-
-	/**
-	 * Get the HTML text of the description page, if available
-	 *
-	 * @return string
-	 */
-	function getDescriptionText() {
-		global $wgMemc, $wgLang;
-		if ( !$this->repo->fetchDescription ) {
-			return false;
-		}
-		$renderUrl = $this->repo->getDescriptionRenderUrl( $this->getName(), $wgLang->getCode() );
-		if ( $renderUrl ) {
-			if ( $this->repo->descriptionCacheExpiry > 0 ) {
-				wfDebug("Attempting to get the description from cache...");
-				$key = $this->repo->getLocalCacheKey( 'RemoteFileDescription', 'url', $wgLang->getCode(),
-									$this->getName() );
-				$obj = $wgMemc->get($key);
-				if ($obj) {
-					wfDebug("success!\n");
-					return $obj;
-				}
-				wfDebug("miss\n");
-			}
-			wfDebug( "Fetching shared description from $renderUrl\n" );
-			$res = Http::get( $renderUrl );
-			if ( $res && $this->repo->descriptionCacheExpiry > 0 ) {
-				$wgMemc->set( $key, $res, $this->repo->descriptionCacheExpiry );
-			}
-			return $res;
-		} else {
-			return false;
-		}
-	}
-
-	/**
-	 * Get discription of file revision
-	 * STUB
-	 *
-	 * @return string
-	 */
-	function getDescription() {
-		return null;
-	}
-
-	/**
-	 * Get the 14-character timestamp of the file upload, or false if
-	 * it doesn't exist
-	 *
-	 * @return string
-	 */
-	function getTimestamp() {
-		$path = $this->getPath();
-		if ( !file_exists( $path ) ) {
-			return false;
-		}
-		return wfTimestamp( TS_MW, filemtime( $path ) );
-	}
-
-	/**
-	 * Get the SHA-1 base 36 hash of the file
-	 *
-	 * @return string
-	 */
-	function getSha1() {
-		return self::sha1Base36( $this->getPath() );
-	}
-
-	/**
-	 * Get the deletion archive key, <sha1>.<ext>
-	 *
-	 * @return string
-	 */
-	function getStorageKey() {
-		$hash = $this->getSha1();
-		if ( !$hash ) {
-			return false;
-		}
-		$ext = $this->getExtension();
-		$dotExt = $ext === '' ? '' : ".$ext";
-		return $hash . $dotExt;
-	}
-
-	/**
-	 * Determine if the current user is allowed to view a particular
-	 * field of this file, if it's marked as deleted.
-	 * STUB
-	 * @param $field Integer
-	 * @return Boolean
-	 */
-	function userCan( $field ) {
-		return true;
-	}
-
-	/**
-	 * Get an associative array containing information about a file in the local filesystem.
-	 *
-	 * @param $path String: absolute local filesystem path
-	 * @param $ext Mixed: the file extension, or true to extract it from the filename.
-	 *             Set it to false to ignore the extension.
-	 *
-	 * @return array
-	 */
-	static function getPropsFromPath( $path, $ext = true ) {
-		wfProfileIn( __METHOD__ );
-		wfDebug( __METHOD__.": Getting file info for $path\n" );
-		$info = array(
-			'fileExists' => file_exists( $path ) && !is_dir( $path )
-		);
-		$gis = false;
-		if ( $info['fileExists'] ) {
-			$magic = MimeMagic::singleton();
-
-			if ( $ext === true ) {
-				$i = strrpos( $path, '.' );
-				$ext = strtolower( $i ? substr( $path, $i + 1 ) : '' );
-			}
-
-			# mime type according to file contents
-			$info['file-mime'] = $magic->guessMimeType( $path, false );
-			# logical mime type
-			$info['mime'] = $magic->improveTypeFromExtension( $info['file-mime'], $ext );
-
-			list( $info['major_mime'], $info['minor_mime'] ) = self::splitMime( $info['mime'] );
-			$info['media_type'] = $magic->getMediaType( $path, $info['mime'] );
-
-			# Get size in bytes
-			$info['size'] = filesize( $path );
-
-			# Height, width and metadata
-			$handler = MediaHandler::getHandler( $info['mime'] );
-			if ( $handler ) {
-				$tempImage = (object)array();
-				$info['metadata'] = $handler->getMetadata( $tempImage, $path );
-				$gis = $handler->getImageSize( $tempImage, $path, $info['metadata'] );
-			} else {
-				$gis = false;
-				$info['metadata'] = '';
-			}
-			$info['sha1'] = self::sha1Base36( $path );
-
-			wfDebug(__METHOD__.": $path loaded, {$info['size']} bytes, {$info['mime']}.\n");
-		} else {
-			$info['mime'] = null;
-			$info['media_type'] = MEDIATYPE_UNKNOWN;
-			$info['metadata'] = '';
-			$info['sha1'] = '';
-			wfDebug(__METHOD__.": $path NOT FOUND!\n");
-		}
-		if( $gis ) {
-			# NOTE: $gis[2] contains a code for the image type. This is no longer used.
-			$info['width'] = $gis[0];
-			$info['height'] = $gis[1];
-			if ( isset( $gis['bits'] ) ) {
-				$info['bits'] = $gis['bits'];
-			} else {
-				$info['bits'] = 0;
-			}
-		} else {
-			$info['width'] = 0;
-			$info['height'] = 0;
-			$info['bits'] = 0;
-		}
-		wfProfileOut( __METHOD__ );
-		return $info;
-	}
-
-	/**
-	 * Get a SHA-1 hash of a file in the local filesystem, in base-36 lower case
-	 * encoding, zero padded to 31 digits.
-	 *
-	 * 160 log 2 / log 36 = 30.95, so the 160-bit hash fills 31 digits in base 36
-	 * fairly neatly.
-	 *
-	 * @param $path string
-	 *
-	 * @return false|string False on failure
-	 */
-	static function sha1Base36( $path ) {
-		wfSuppressWarnings();
-		$hash = sha1_file( $path );
-		wfRestoreWarnings();
-		if ( $hash === false ) {
-			return false;
-		} else {
-			return wfBaseConvert( $hash, 16, 36, 31 );
-		}
-	}
-
-	/**
-	 * @return string
-	 */
-	function getLongDesc() {
-		$handler = $this->getHandler();
-		if ( $handler ) {
-			return $handler->getLongDesc( $this );
-		} else {
-			return MediaHandler::getGeneralLongDesc( $this );
-		}
-	}
-
-	/**
-	 * @return string
-	 */
-	function getShortDesc() {
-		$handler = $this->getHandler();
-		if ( $handler ) {
-			return $handler->getShortDesc( $this );
-		} else {
-			return MediaHandler::getGeneralShortDesc( $this );
-		}
-	}
-
-	/**
-	 * @return string
-	 */
-	function getDimensionsString() {
-		$handler = $this->getHandler();
-		if ( $handler ) {
-			return $handler->getDimensionsString( $this );
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * @return
-	 */
-	function getRedirected() {
-		return $this->redirected;
-	}
-
-	/**
-	 * @return Title
-	 */
-	function getRedirectedTitle() {
-		if ( $this->redirected ) {
-			if ( !$this->redirectTitle ) {
-				$this->redirectTitle = Title::makeTitle( NS_FILE, $this->redirected );
-			}
-			return $this->redirectTitle;
-		}
-	}
-
-	/**
-	 * @param  $from
-	 * @return void
-	 */
-	function redirectedFrom( $from ) {
-		$this->redirected = $from;
-	}
-
-	/**
-	 * @return bool
-	 */
-	function isMissing() {
-		return false;
-	}
-}
-/**
- * Aliases for backwards compatibility with 1.6
- */
-define( 'MW_IMG_DELETED_FILE', File::DELETED_FILE );
-define( 'MW_IMG_DELETED_COMMENT', File::DELETED_COMMENT );
-define( 'MW_IMG_DELETED_USER', File::DELETED_USER );
-define( 'MW_IMG_DELETED_RESTRICTED', File::DELETED_RESTRICTED );