1 files changed, 0 insertions, 156 deletions
diff --git a/includes/filerepo/FileCache.php b/includes/filerepo/FileCache.php
deleted file mode 100644
index 7840d1a3..00000000
--- a/includes/filerepo/FileCache.php
+++ /dev/null
@@ -1,156 +0,0 @@
-<?php
-/**
- * Cache of file objects, wrapping some RepoGroup functions to avoid redundant
- * queries.  Loosely inspired by the LinkCache / LinkBatch classes for titles.
- *
- * ISSUE: Merge with RepoGroup?
- *
- * @ingroup FileRepo
- */
-class FileCache {
-	var $repoGroup;
-	var $cache = array(), $notFound = array();
-
-	protected static $instance;
-
-	/**
-	 * Get a FileCache instance.  Typically, only one instance of FileCache
-	 * is needed in a MediaWiki invocation.
-	 */
-	static function singleton() {
-		if ( self::$instance ) {
-			return self::$instance;
-		}
-		self::$instance = new FileCache( RepoGroup::singleton() );
-		return self::$instance;
-	}
-
-	/**
-	 * Destroy the singleton instance, so that a new one will be created next
-	 * time singleton() is called.
-	 */
-	static function destroySingleton() {
-		self::$instance = null;
-	}
-
-	/**
-	 * Set the singleton instance to a given object
-	 */
-	static function setSingleton( $instance ) {
-		self::$instance = $instance;
-	}
-
-	/**
-	 * Construct a group of file repositories.
-	 * @param RepoGroup $repoGroup
-	 */
-	function __construct( $repoGroup ) {
-		$this->repoGroup = $repoGroup;
-	}
-
-
-	/**
-	 * Add some files to the cache.  This is a fairly low-level function,
-	 * which most users should not need to call.  Note that any existing
-	 * entries for the same keys will not be replaced.  Call clearFiles()
-	 * first if you need that.
-	 * @param array $files array of File objects, indexed by DB key
-	 */
-	function addFiles( $files ) {
-		wfDebug( "FileCache adding ".count( $files )." files\n" );
-		$this->cache += $files;
-	}
-
-	/**
-	 * Remove some files from the cache, so that their existence will be
-	 * rechecked.  This is a fairly low-level function, which most users
-	 * should not need to call.
-	 * @param array $remove array indexed by DB keys to remove (the values are ignored)
-	 */
-	function clearFiles( $remove ) {
-		wfDebug( "FileCache clearing data for ".count( $remove )." files\n" );
-		$this->cache = array_diff_keys( $this->cache, $remove );
-		$this->notFound = array_diff_keys( $this->notFound, $remove );
-	}
-
-	/**
-	 * Mark some DB keys as nonexistent.  This is a fairly low-level
-	 * function, which most users should not need to call.
-	 * @param array $dbkeys array of DB keys
-	 */
-	function markNotFound( $dbkeys ) {
-		wfDebug( "FileCache marking ".count( $dbkeys )." files as not found\n" );
-		$this->notFound += array_fill_keys( $dbkeys, true );
-	}
-
-
-	/**
-	 * Search the cache for a file.
-	 * @param mixed $title Title object or string
-	 * @return File object or false if it is not found
-	 * @todo Implement searching for old file versions(?)
-	 */
-	function findFile( $title ) {
-		if( !( $title instanceof Title ) ) {
-			$title = Title::makeTitleSafe( NS_FILE, $title );
-		}
-		if( !$title ) {
-			return false;  // invalid title?
-		}
-
-		$dbkey = $title->getDBkey();
-		if( array_key_exists( $dbkey, $this->cache ) ) {
-			wfDebug( "FileCache HIT for $dbkey\n" );
-			return $this->cache[$dbkey];
-		}
-		if( array_key_exists( $dbkey, $this->notFound ) ) {
-			wfDebug( "FileCache negative HIT for $dbkey\n" );
-			return false;
-		}
-
-		// Not in cache, fall back to a direct query
-		$file = $this->repoGroup->findFile( $title );
-		if( $file ) {
-			wfDebug( "FileCache MISS for $dbkey\n" );
-			$this->cache[$dbkey] = $file;
-		} else {
-			wfDebug( "FileCache negative MISS for $dbkey\n" );
-			$this->notFound[$dbkey] = true;
-		}
-		return $file;
-	}
-
-	/**
-	 * Search the cache for multiple files.
-	 * @param array $titles Title objects or strings to search for
-	 * @return array of File objects, indexed by DB key
-	 */
-	function findFiles( $titles ) {
-		$titleObjs = array();
-		foreach ( $titles as $title ) {
-			if ( !( $title instanceof Title ) ) {
-				$title = Title::makeTitleSafe( NS_FILE, $title );
-			}
-			if ( $title ) {
-				$titleObjs[$title->getDBkey()] = $title;
-			}
-		}
-
-		$result = array_intersect_key( $this->cache, $titleObjs );
-
-		$unsure = array_diff_key( $titleObjs, $result, $this->notFound );
-		if( $unsure ) {
-			wfDebug( "FileCache MISS for ".count( $unsure )." files out of ".count( $titleObjs )."...\n" );
-			// XXX: We assume the array returned by findFiles() is
-			// indexed by DBkey; this appears to be true, but should
-			// be explicitly documented.
-			$found = $this->repoGroup->findFiles( $unsure );
-			$result += $found;
-			$this->addFiles( $found );
-			$this->markNotFound( array_keys( array_diff_key( $unsure, $found ) ) );
-		}
-
-		wfDebug( "FileCache found ".count( $result )." files out of ".count( $titleObjs )."\n" );
-		return $result;
-	}
-}