Spaces, braces and trailing whitespace
authorSam Reed <reedy@users.mediawiki.org>
Mon, 11 Apr 2011 20:43:04 +0000 (20:43 +0000)
committerSam Reed <reedy@users.mediawiki.org>
Mon, 11 Apr 2011 20:43:04 +0000 (20:43 +0000)
includes/media/GIF.php
includes/media/GIFMetadataExtractor.php

index 3adb7c4..f8fe475 100644 (file)
@@ -12,7 +12,7 @@
  * @ingroup Media
  */
 class GIFHandler extends BitmapHandler {
-       
+
        function getMetadata( $image, $filename ) {
                if ( !isset( $image->parsedGIFMetadata ) ) {
                        try {
@@ -25,9 +25,8 @@ class GIFHandler extends BitmapHandler {
                }
 
                return serialize( $image->parsedGIFMetadata );
-
        }
-       
+
        function formatMetadata( $image ) {
                return false;
        }
@@ -56,15 +55,17 @@ class GIFHandler extends BitmapHandler {
                $ser = $image->getMetadata();
                if ($ser) {
                        $metadata = unserialize($ser);
-                       if( $metadata['frameCount'] > 1 ) return true;
+                       if( $metadata['frameCount'] > 1 ) {
+                               return true;
+                       }
                }
                return false;
        }
-       
+
        function getMetadataType( $image ) {
                return 'parsed-gif';
        }
-       
+
        function isMetadataValid( $image, $metadata ) {
                wfSuppressWarnings();
                $data = unserialize( $metadata );
@@ -85,21 +86,25 @@ class GIFHandler extends BitmapHandler {
                $metadata = unserialize($image->getMetadata());
                wfRestoreWarnings();
                
-               if (!$metadata || $metadata['frameCount'] <=  1)
+               if (!$metadata || $metadata['frameCount'] <=  1) {
                        return $original;
+               }
 
                /* Preserve original image info string, but strip the last char ')' so we can add even more */
                $info = array();
                $info[] = $original;
                
-               if ($metadata['looped'])
+               if ( $metadata['looped'] ) {
                        $info[] = wfMsgExt( 'file-info-gif-looped', 'parseinline' );
+               }
                
-               if ($metadata['frameCount'] > 1)
+               if ( $metadata['frameCount'] > 1 ) {
                        $info[] = wfMsgExt( 'file-info-gif-frames', 'parseinline', $metadata['frameCount'] );
+               }
                
-               if ($metadata['duration'])
+               if ( $metadata['duration'] ) {
                        $info[] = $wgLang->formatTimePeriod( $metadata['duration'] );
+               }
                
                return $wgLang->commaList( $info );
        }
index bc1a480..8d0e87e 100644 (file)
@@ -25,54 +25,56 @@ class GIFMetadataExtractor {
                self::$gif_frame_sep = pack( "C", ord("," ) );
                self::$gif_extension_sep = pack( "C", ord("!" ) );
                self::$gif_term = pack( "C", ord(";" ) );
-               
+
                $frameCount = 0;
                $duration = 0.0;
                $isLooped = false;
-               
-               if (!$filename)
+
+               if ( !$filename ) {
                        throw new Exception( "No file name specified" );
-               elseif ( !file_exists($filename) || is_dir($filename) )
+               } elseif ( !file_exists( $filename ) || is_dir( $filename ) ) {
                        throw new Exception( "File $filename does not exist" );
-               
+               }
+
                $fh = fopen( $filename, 'r' );
-               
-               if (!$fh)
+
+               if ( !$fh ) {
                        throw new Exception( "Unable to open file $filename" );
-               
+               }
+
                // Check for the GIF header
                $buf = fread( $fh, 6 );
                if ( !($buf == 'GIF87a' || $buf == 'GIF89a') ) {
                        throw new Exception( "Not a valid GIF file; header: $buf" );
                }
-               
+
                // Skip over width and height.
                fread( $fh, 4 );
-               
+
                // Read BPP
                $buf = fread( $fh, 1 );
                $bpp = self::decodeBPP( $buf );
-               
+
                // Skip over background and aspect ratio
                fread( $fh, 2 );
-               
+
                // Skip over the GCT
                self::readGCT( $fh, $bpp );
-               
+
                while( !feof( $fh ) ) {
                        $buf = fread( $fh, 1 );
-                       
+
                        if ($buf == self::$gif_frame_sep) {
                                // Found a frame
                                $frameCount++;
-                               
+
                                ## Skip bounding box
                                fread( $fh, 8 );
-                               
+
                                ## Read BPP
                                $buf = fread( $fh, 1 );
                                $bpp = self::decodeBPP( $buf );
-                               
+
                                ## Read GCT
                                self::readGCT( $fh, $bpp );
                                fread( $fh, 1 );
@@ -81,54 +83,55 @@ class GIFMetadataExtractor {
                                $buf = fread( $fh, 1 );
                                $extension_code = unpack( 'C', $buf );
                                $extension_code = $extension_code[1];
-                               
+
                                if ($extension_code == 0xF9) {
                                        // Graphics Control Extension.
                                        fread( $fh, 1 ); // Block size
-                                       
+
                                        fread( $fh, 1 ); // Transparency, disposal method, user input
-                                       
+
                                        $buf = fread( $fh, 2 ); // Delay, in hundredths of seconds.
                                        $delay = unpack( 'v', $buf );
                                        $delay = $delay[1];
                                        $duration += $delay * 0.01;
-                                       
+
                                        fread( $fh, 1 ); // Transparent colour index
-                                       
+
                                        $term = fread( $fh, 1 ); // Should be a terminator
                                        $term = unpack( 'C', $term );
                                        $term = $term[1];
-                                       if ($term != 0 )
+                                       if ($term != 0 ) {
                                                throw new Exception( "Malformed Graphics Control Extension block" );
+                                       }
                                } elseif ($extension_code == 0xFF) {
                                        // Application extension (Netscape info about the animated gif)
                                        $blockLength = fread( $fh, 1 );
                                        $blockLength = unpack( 'C', $blockLength );
                                        $blockLength = $blockLength[1];
                                        $data = fread( $fh, $blockLength );
-                                       
+
                                        // NETSCAPE2.0 (application name)
                                        if ($blockLength != 11 || $data != 'NETSCAPE2.0') {
                                                fseek( $fh, -($blockLength + 1), SEEK_CUR );
                                                self::skipBlock( $fh );
                                                continue;
                                        }
-                                       
+
                                        $data = fread( $fh, 2 ); // Block length and introduction, should be 03 01
-                                       
+
                                        if ($data != "\x03\x01") {
                                                throw new Exception( "Expected \x03\x01, got $data" );
                                        }
-                                       
+
                                        // Unsigned little-endian integer, loop count or zero for "forever"
                                        $loopData = fread( $fh, 2 );
                                        $loopData = unpack( 'v', $loopData );
                                        $loopCount = $loopData[1];
-                                       
+
                                        if ($loopCount != 1) {
                                                $isLooped = true;
                                        }
-                                       
+
                                        // Read out terminator byte
                                        fread( $fh, 1 );
                                } else {
@@ -142,43 +145,42 @@ class GIFMetadataExtractor {
                                throw new Exception( "At position: ".ftell($fh). ", Unknown byte ".$byte );
                        }
                }
-               
+
                return array(
                        'frameCount' => $frameCount,
                        'looped' => $isLooped,
                        'duration' => $duration
                );
-               
        }
-       
+
        static function readGCT( $fh, $bpp ) {
-               if ($bpp > 0) {
-                       for( $i=1; $i<=pow(2,$bpp); ++$i ) {
+               if ( $bpp > 0 ) {
+                       for( $i=1; $i<=pow( 2, $bpp ); ++$i ) {
                                fread( $fh, 3 );
                        }
                }
        }
-       
+
        static function decodeBPP( $data ) {
                $buf = unpack( 'C', $data );
                $buf = $buf[1];
                $bpp = ( $buf & 7 ) + 1;
                $buf >>= 7;
-               
+
                $have_map = $buf & 1;
-               
+
                return $have_map ? $bpp : 0;
        }
-       
+
        static function skipBlock( $fh ) {
                while ( !feof( $fh ) ) {
                        $buf = fread( $fh, 1 );
                        $block_len = unpack( 'C', $buf );
                        $block_len = $block_len[1];
-                       if ($block_len == 0)
+                       if ($block_len == 0) {
                                return;
+                       }
                        fread( $fh, $block_len );
                }
        }
-
 }