1 files changed, 32 insertions, 17 deletions

diff --git a/includes/filebackend/FSFile.php b/includes/filebackend/FSFile.php
index e07c99d4..7d0dbd52 100644
--- a/includes/filebackend/FSFile.php
+++ b/includes/filebackend/FSFile.php
@@ -28,11 +28,12 @@
  */
 class FSFile {
 	protected $path; // path to file
+	private $sha1Base36 = null; // File Sha1Base36
 
 	/**
 	 * Sets up the file object
 	 *
-	 * @param $path string Path to temporary file on local disk
+	 * @param string $path Path to temporary file on local disk
 	 * @throws MWException
 	 */
 	public function __construct( $path ) {
@@ -86,8 +87,8 @@ class FSFile {
 
 	/**
 	 * Guess the MIME type from the file contents alone
-	 * 
-	 * @return string 
+	 *
+	 * @return string
 	 */
 	public function getMimeType() {
 		return MimeMagic::singleton()->guessMimeType( $this->path, false );
@@ -104,7 +105,7 @@ class FSFile {
 	 */
 	public function getProps( $ext = true ) {
 		wfProfileIn( __METHOD__ );
-		wfDebug( __METHOD__.": Getting file info for $this->path\n" );
+		wfDebug( __METHOD__ . ": Getting file info for $this->path\n" );
 
 		$info = self::placeholderProps();
 		$info['fileExists'] = $this->exists();
@@ -131,7 +132,7 @@ class FSFile {
 			# Height, width and metadata
 			$handler = MediaHandler::getHandler( $info['mime'] );
 			if ( $handler ) {
-				$tempImage = (object)array();
+				$tempImage = (object)array(); // XXX (hack for File object)
 				$info['metadata'] = $handler->getMetadata( $tempImage, $this->path );
 				$gis = $handler->getImageSize( $tempImage, $this->path, $info['metadata'] );
 				if ( is_array( $gis ) ) {
@@ -140,9 +141,9 @@ class FSFile {
 			}
 			$info['sha1'] = $this->getSha1Base36();
 
-			wfDebug(__METHOD__.": $this->path loaded, {$info['size']} bytes, {$info['mime']}.\n");
+			wfDebug( __METHOD__ . ": $this->path loaded, {$info['size']} bytes, {$info['mime']}.\n" );
 		} else {
-			wfDebug(__METHOD__.": $this->path NOT FOUND!\n");
+			wfDebug( __METHOD__ . ": $this->path NOT FOUND!\n" );
 		}
 
 		wfProfileOut( __METHOD__ );
@@ -193,25 +194,32 @@ class FSFile {
 	 * 160 log 2 / log 36 = 30.95, so the 160-bit hash fills 31 digits in base 36
 	 * fairly neatly.
 	 *
+	 * @param $recache bool
 	 * @return bool|string False on failure
 	 */
-	public function getSha1Base36() {
+	public function getSha1Base36( $recache = false ) {
 		wfProfileIn( __METHOD__ );
 
+		if ( $this->sha1Base36 !== null && !$recache ) {
+			wfProfileOut( __METHOD__ );
+			return $this->sha1Base36;
+		}
+
 		wfSuppressWarnings();
-		$hash = sha1_file( $this->path );
+		$this->sha1Base36 = sha1_file( $this->path );
 		wfRestoreWarnings();
-		if ( $hash !== false ) {
-			$hash = wfBaseConvert( $hash, 16, 36, 31 );
+
+		if ( $this->sha1Base36 !== false ) {
+			$this->sha1Base36 = wfBaseConvert( $this->sha1Base36, 16, 36, 31 );
 		}
 
 		wfProfileOut( __METHOD__ );
-		return $hash;
+		return $this->sha1Base36;
 	}
 
 	/**
 	 * Get the final file extension from a file system path
-	 * 
+	 *
 	 * @param $path string
 	 * @return string
 	 */
@@ -223,7 +231,7 @@ class FSFile {
 	/**
 	 * Get an associative array containing information about a file in the local filesystem.
 	 *
-	 * @param $path String: absolute local filesystem path
+	 * @param string $path 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.
 	 *
@@ -242,11 +250,18 @@ class FSFile {
 	 * fairly neatly.
 	 *
 	 * @param $path string
+	 * @param $recache bool
 	 *
 	 * @return bool|string False on failure
 	 */
-	public static function getSha1Base36FromPath( $path ) {
-		$fsFile = new self( $path );
-		return $fsFile->getSha1Base36();
+	public static function getSha1Base36FromPath( $path, $recache = false ) {
+		static $sha1Base36 = array();
+
+		if ( !isset( $sha1Base36[$path] ) || $recache ) {
+			$fsFile = new self( $path );
+			$sha1Base36[$path] = $fsFile->getSha1Base36();
+		}
+
+		return $sha1Base36[$path];
 	}
 }