ObjFW  Diff

parseFileNameExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	[entry->_fileName release];
	entry->_fileName = nil;

	entry->_fileName = [[OFString alloc]
	    initWithCString: (char *)[extension items] + 1
		   encoding: encoding
		     length: [extension count] - 1];
}

static void
parseDirectoryNameExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	void *pool = objc_autoreleasePoolPush();
	OFMutableData *data = [[extension mutableCopy] autorelease];
	char *items = [data items];
	size_t count = [data count];
	OFMutableString *directoryName;

	for (size_t i = 1; i < count; i++)
		if (items[i] == '\xFF')
			items[i] = '/';

	directoryName = [OFMutableString stringWithCString: items + 1

parseCommentExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	[entry->_fileComment release];
	entry->_fileComment = nil;

	entry->_fileComment = [[OFString alloc]
	    initWithCString: (char *)[extension items] + 1
		   encoding: encoding
		     length: [extension count] - 1];
}

static void
parsePermissionsExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	uint16_t mode;

	if ([extension count] != 3)
		@throw [OFInvalidFormatException exception];

	memcpy(&mode, (char *)[extension items] + 1, 2);
	mode = OF_BSWAP16_IF_BE(mode);

	[entry->_mode release];
	entry->_mode = nil;

	entry->_mode = [[OFNumber alloc] initWithUInt16: mode];
}

static void
parseGIDUIDExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	uint16_t UID, GID;

	if ([extension count] != 5)
		@throw [OFInvalidFormatException exception];

	memcpy(&GID, (char *)[extension items] + 1, 2);
	GID = OF_BSWAP16_IF_BE(GID);

	memcpy(&UID, (char *)[extension items] + 3, 2);
	UID = OF_BSWAP16_IF_BE(UID);

	[entry->_GID release];
	entry->_GID = nil;

	[entry->_UID release];
	entry->_UID = nil;

	entry->_GID = [[OFNumber alloc] initWithUInt16: GID];
	entry->_UID = [[OFNumber alloc] initWithUInt16: UID];
}

static void
parseGroupExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	[entry->_group release];
	entry->_group = nil;

	entry->_group = [[OFString alloc]
	    initWithCString: (char *)[extension items] + 1
		   encoding: encoding
		     length: [extension count] - 1];
}

static void
parseOwnerExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	[entry->_owner release];
	entry->_owner = nil;

	entry->_owner = [[OFString alloc]
	    initWithCString: (char *)[extension items] + 1
		   encoding: encoding
		     length: [extension count] - 1];
}

static void
parseModificationDateExtension(OFLHAArchiveEntry *entry, OFData *extension,
    of_string_encoding_t encoding)
{
	uint32_t modificationDate;

	if ([extension count] != 5)
		@throw [OFInvalidFormatException exception];

	memcpy(&modificationDate, (char *)[extension items] + 1, 4);
	modificationDate = OF_BSWAP32_IF_BE(modificationDate);

	[entry->_modificationDate release];
	entry->_modificationDate = nil;

	entry->_modificationDate = [[OFDate alloc]
	    initWithTimeIntervalSince1970: modificationDate];

	data = [OFMutableData
	    dataWithItems: [entry->_directoryName cStringWithEncoding: encoding]
		    count: [entry->_directoryName
			       cStringLengthWithEncoding: encoding]];
	[data addItems: [entry->_fileName cStringWithEncoding: encoding]
		 count: [entry->_fileName cStringLengthWithEncoding: encoding]];

	cString = [data items];
	length = [data count];
	pos = 0;

	for (size_t i = 0; i < length; i++) {
		if (cString[i] == '/' || cString[i] == '\\') {
			cString[i] = '\xFF';
			pos = i + 1;
		}

	[data addItems: &tmp32
		 count: sizeof(tmp32)];

	tmp32 = OF_BSWAP32_IF_BE(_uncompressedSize);
	[data addItems: &tmp32
		 count: sizeof(tmp32)];

	tmp32 = OF_BSWAP32_IF_BE((uint32_t)[_date timeIntervalSince1970]);
	[data addItems: &tmp32
		 count: sizeof(tmp32)];

	/* Reserved */
	[data increaseCountBy: 1];

	/* Header level */

	if (_mode != nil) {
		tmp16 = OF_BSWAP16_IF_BE(5);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];
		[data addItem: "\x50"];

		tmp16 = OF_BSWAP16_IF_BE([_mode uInt16Value]);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];
	}

	if (_UID != nil || _GID != nil) {
		if (_UID == nil || _GID == nil)
			@throw [OFInvalidArgumentException exception];

		tmp16 = OF_BSWAP16_IF_BE(7);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];
		[data addItem: "\x51"];

		tmp16 = OF_BSWAP16_IF_BE([_GID uInt16Value]);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];

		tmp16 = OF_BSWAP16_IF_BE([_UID uInt16Value]);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];
	}

	if (_group != nil) {
		size_t groupLength =
		    [_group cStringLengthWithEncoding: encoding];

	if (_modificationDate != nil) {
		tmp16 = OF_BSWAP16_IF_BE(7);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];
		[data addItem: "\x54"];

		tmp32 = OF_BSWAP32_IF_BE(
		    (uint32_t)[_modificationDate timeIntervalSince1970]);
		[data addItems: &tmp32
			 count: sizeof(tmp32)];
	}

	for (OFData *extension in _extensions) {
		size_t extensionLength = [extension count];

		if ([extension itemSize] != 1)
			@throw [OFInvalidArgumentException exception];

		if (extensionLength > UINT16_MAX - 2)
			@throw [OFOutOfRangeException exception];

		tmp16 = OF_BSWAP16_IF_BE((uint16_t)extensionLength + 2);
		[data addItems: &tmp16
			 count: sizeof(tmp16)];
		[data addItems: [extension items]
			 count: [extension count]];
	}

	/* Zero-length extension to terminate */
	[data increaseCountBy: 2];

	headerSize = [data count];

	if (headerSize > UINT16_MAX)
		@throw [OFOutOfRangeException exception];

	/* Now fill in the size and CRC16 for the entire header */
	tmp16 = OF_BSWAP16_IF_BE(headerSize);
	memcpy([data itemAtIndex: 0], &tmp16, sizeof(tmp16));


	tmp16 = OF_BSWAP16_IF_BE(of_crc16(0, [data items], [data count]));
	memcpy([data itemAtIndex: 27], &tmp16, sizeof(tmp16));

	[stream writeData: data];

	objc_autoreleasePoolPop(pool);
}

- (OFString *)description
{
	void *pool = objc_autoreleasePoolPush();
	OFString *mode = (_mode == nil
	    ? nil
	    : [OFString stringWithFormat: @"%" PRIo16, [_mode uInt16Value]]);
	OFString *extensions = [[_extensions description]
	    stringByReplacingOccurrencesOfString: @"\n"
				      withString: @"\n\t"];
	OFString *ret = [OFString stringWithFormat:
	    @"<%@:\n"
	    @"\tFile name = %@\n"
	    @"\tCompression method = %@\n"
	    @"\tCompressed size = %" @PRIu32 "\n"

	    @"\tUID = %@\n"
	    @"\tGID = %@\n"
	    @"\tOwner = %@\n"
	    @"\tGroup = %@\n"
	    @"\tModification date = %@\n"
	    @"\tExtensions: %@"
	    @">",
	    [self class], [self fileName], _compressionMethod, _compressedSize,
	    _uncompressedSize, _date, _headerLevel, _CRC16,
	    _operatingSystemIdentifier, _fileComment, mode, _UID, _GID, _owner,
	    _group, _modificationDate, extensions];

	[ret retain];

	objc_autoreleasePoolPop(pool);

	return [ret autorelease];
}
@end