Update to MediaWiki 1.19.0

1 files changed, 137 insertions, 0 deletions

diff --git a/includes/media/XCF.php b/includes/media/XCF.php
new file mode 100644
index 00000000..806db73c
--- /dev/null
+++ b/includes/media/XCF.php
@@ -0,0 +1,137 @@
+<?php
+/**
+ * Handler for the Gimp's native file format (XCF)
+ *
+ * Overview:
+ *   http://en.wikipedia.org/wiki/XCF_(file_format)
+ * Specification in Gnome repository:
+ *   http://svn.gnome.org/viewvc/gimp/trunk/devel-docs/xcf.txt?view=markup
+ *
+ * @file
+ * @ingroup Media
+ */
+
+/**
+ * Handler for the Gimp's native file format; getimagesize() doesn't
+ * support these files
+ *
+ * @ingroup Media
+ */
+class XCFHandler extends BitmapHandler {
+
+	/**
+	 * @param $file
+	 * @return bool
+	 */
+	function mustRender( $file ) {
+		return true;
+	}
+
+	/**
+	 * Render files as PNG
+	 *
+	 * @param $ext
+	 * @param $mime
+	 * @param $params
+	 * @return array
+	 */
+	function getThumbType( $ext, $mime, $params = null ) {
+		return array( 'png', 'image/png' );
+	}
+
+	/**
+	 * Get width and height from the XCF header.
+	 *
+	 * @param $image
+	 * @param $filename
+	 * @return array
+	 */
+	function getImageSize( $image, $filename ) {
+		return self::getXCFMetaData( $filename );
+	}
+
+	/**
+	 * Metadata for a given XCF file
+	 *
+	 * Will return false if file magic signature is not recognized
+	 * @author Hexmode
+	 * @author Hashar
+	 *
+	 * @param $filename String Full path to a XCF file
+	 * @return false|metadata array just like PHP getimagesize()
+	 */
+	static function getXCFMetaData( $filename ) {
+		# Decode master structure
+		$f = fopen( $filename, 'rb' );
+		if( !$f ) {
+			return false;
+		}
+		# The image structure always starts at offset 0 in the XCF file.
+		# So we just read it :-)
+		$binaryHeader = fread( $f, 26 );
+		fclose($f);
+
+		# Master image structure:
+		#
+		# byte[9] "gimp xcf "  File type magic
+		# byte[4] version      XCF version
+		#                        "file" - version 0
+		#                        "v001" - version 1
+		#                        "v002" - version 2
+		# byte    0            Zero-terminator for version tag
+		# uint32  width        With of canvas
+		# uint32  height       Height of canvas
+		# uint32  base_type    Color mode of the image; one of
+		#                         0: RGB color
+		#                         1: Grayscale
+		#                         2: Indexed color
+		#        (enum GimpImageBaseType in libgimpbase/gimpbaseenums.h)
+		try {
+			$header = wfUnpack(
+				  "A9magic"     # A: space padded
+				. "/a5version"  # a: zero padded
+				. "/Nwidth"     # \
+				. "/Nheight"    # N: unsigned long 32bit big endian
+				. "/Nbase_type" # /
+			, $binaryHeader
+			);
+		} catch( MWException $mwe ) {
+			return false;
+		}
+
+		# Check values
+		if( $header['magic'] !== 'gimp xcf' ) {
+			wfDebug( __METHOD__ . " '$filename' has invalid magic signature.\n" );
+			return false;
+		}
+		# TODO: we might want to check for sane values of width and height
+
+		wfDebug( __METHOD__ . ": canvas size of '$filename' is {$header['width']} x {$header['height']} px\n" );
+
+		# Forge a return array containing metadata information just like getimagesize()
+		# See PHP documentation at: http://www.php.net/getimagesize
+		$metadata = array();
+		$metadata[0] = $header['width'];
+		$metadata[1] = $header['height'];
+		$metadata[2] = null;   # IMAGETYPE constant, none exist for XCF.
+		$metadata[3] = sprintf(
+			'height="%s" width="%s"', $header['height'], $header['width']
+		);
+		$metadata['mime'] = 'image/x-xcf';
+		$metadata['channels'] = null;
+		$metadata['bits'] = 8;  # Always 8-bits per color
+
+		assert( '7 == count($metadata); # return array must contains 7 elements just like getimagesize() return' );
+
+		return $metadata;
+	}
+
+	/**
+	 * Must use "im" for XCF
+	 *
+	 * @return string
+	 */
+	protected static function getScalerType( $dstPath, $checkDstPath = true ) {
+		return "im";
+	}
+}