The R Project SVN R

Rev

Rev 49813 | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 49813 Rev 53508
Line 36... Line 36...
36 
 
 36 
 
37 
	// Verify the CRC32 so we can distinguish between corrupt
 37 
	// Verify the CRC32 so we can distinguish between corrupt
38 
	// and unsupported files.
 38 
	// and unsupported files.
39 
	const uint32_t crc = lzma_crc32(in + sizeof(lzma_header_magic),
 39 
	const uint32_t crc = lzma_crc32(in + sizeof(lzma_header_magic),
40 
			LZMA_STREAM_FLAGS_SIZE, 0);
 40 
			LZMA_STREAM_FLAGS_SIZE, 0);
41 
	if (crc != integer_read_32(in + sizeof(lzma_header_magic)
 41 
	if (crc != unaligned_read32le(in + sizeof(lzma_header_magic)
42 
			+ LZMA_STREAM_FLAGS_SIZE))
 42 
			+ LZMA_STREAM_FLAGS_SIZE))
43 
		return LZMA_DATA_ERROR;
 43 
		return LZMA_DATA_ERROR;
44 
 
 44 
 
45 
	// Stream Flags
 45 
	// Stream Flags
46 
	if (stream_flags_decode(options, in + sizeof(lzma_header_magic)))
 46 
	if (stream_flags_decode(options, in + sizeof(lzma_header_magic)))
Line 65... Line 65...
65 
		return LZMA_FORMAT_ERROR;
 65 
		return LZMA_FORMAT_ERROR;
66 
 
 66 
 
67 
	// CRC32
 67 
	// CRC32
68 
	const uint32_t crc = lzma_crc32(in + sizeof(uint32_t),
 68 
	const uint32_t crc = lzma_crc32(in + sizeof(uint32_t),
69 
			sizeof(uint32_t) + LZMA_STREAM_FLAGS_SIZE, 0);
 69 
			sizeof(uint32_t) + LZMA_STREAM_FLAGS_SIZE, 0);
70 
	if (crc != integer_read_32(in))
 70 
	if (crc != unaligned_read32le(in))
71 
		return LZMA_DATA_ERROR;
 71 
		return LZMA_DATA_ERROR;
72 
 
 72 
 
73 
	// Stream Flags
 73 
	// Stream Flags
74 
	if (stream_flags_decode(options, in + sizeof(uint32_t) * 2))
 74 
	if (stream_flags_decode(options, in + sizeof(uint32_t) * 2))
75 
		return LZMA_OPTIONS_ERROR;
 75 
		return LZMA_OPTIONS_ERROR;
76 
 
 76 
 
77 
	// Backward Size
 77 
	// Backward Size
78 
	options->backward_size = integer_read_32(in + sizeof(uint32_t));
 78 
	options->backward_size = unaligned_read32le(in + sizeof(uint32_t));
79 
	options->backward_size = (options->backward_size + 1) * 4;
 79 
	options->backward_size = (options->backward_size + 1) * 4;
80 
 
 80 
 
81 
	return LZMA_OK;
 81 
	return LZMA_OK;
82 
}
 82 
}