Commit Graph

28 Commits

Author SHA1 Message Date
Lasse Collin 7136f1735c Rename unaligned_read32ne to read32ne, and similarly for the others. 2019-12-31 00:47:49 +02:00
Lasse Collin dfac2c9a1d liblzma: Fix warnings from -Wsign-conversion.
Also, more parentheses were added to the literal_subcoder
macro in lzma_comon.h (better style but no functional change
in the current usage).
2019-06-23 21:38:56 +03:00
Lasse Collin 94e3f986aa Fix or hide warnings from GCC 7's -Wimplicit-fallthrough. 2017-08-14 20:08:33 +03:00
Lasse Collin d4a0462abe liblzma: Avoid multiple definitions of lzma_coder structures.
Only one definition was visible in a translation unit.
It avoided a few casts and temp variables but seems that
this hack doesn't work with link-time optimizations in compilers
as it's not C99/C11 compliant.

Fixes:
http://www.mail-archive.com/xz-devel@tukaani.org/msg00279.html
2016-11-21 20:24:50 +02:00
Lasse Collin 3778db1be5 liblzma: Make the use of lzma_allocator const-correct.
There is a tiny risk of causing breakage: If an application
assigns lzma_stream.allocator to a non-const pointer, such
code won't compile anymore. I don't know why anyone would do
such a thing though, so in practice this shouldn't cause trouble.

Thanks to Jan Kratochvil for the patch.
2012-07-17 18:19:59 +03:00
Lasse Collin 1403707fc6 liblzma: Check that the first byte of range encoded data is 0x00.
It is just to be more pedantic and thus perhaps catch broken
files slightly earlier.
2012-06-28 10:47:49 +03:00
Lasse Collin 974ebe6349 liblzma: Rename a few variables and constants.
This has no semantic changes. I find the new names slightly
more logical and they match the names that are already used
in XZ Embedded.

The name fastpos wasn't changed (not worth the hassle).
2010-10-26 10:36:41 +03:00
Lasse Collin 0076e03641 Clean up a few FIXMEs and TODOs.
lzma_chunk_size() was commented out because it is
currently useless.
2010-10-19 11:44:37 +03:00
Lasse Collin eb7d51a3fa Collection of language fixes to comments and docs.
Thanks to Jonathan Nieder.
2010-02-12 13:16:15 +02:00
Lasse Collin ebfb2c5e1f Use a tuklib module for integer handling.
This replaces bswap.h and integer.h.

The tuklib module uses <byteswap.h> on GNU,
<sys/endian.h> on *BSDs and <sys/byteorder.h>
on Solaris, which may contain optimized code
like inline assembly.
2009-10-04 22:57:12 +03:00
Lasse Collin 02ddf09bc3 Put the interesting parts of XZ Utils into the public domain.
Some minor documentation cleanups were made at the same time.
2009-04-13 11:27:40 +03:00
Lasse Collin f76e39cf93 Added initial support for preset dictionary for raw LZMA1
and LZMA2. It is not supported by the .xz format or the xz
command line tool yet.
2009-01-27 18:36:05 +02:00
Lasse Collin c596fda40b Make the memusage functions of LZMA1 and LZMA2 decoders
to validate the filter options.
2008-12-01 22:58:22 +02:00
Lasse Collin 1dcecfb09b Some API changes, bug fixes, cleanups etc. 2008-09-27 19:09:21 +03:00
Lasse Collin 13a74b78e3 Renamed constants:
- LZMA_VLI_VALUE_MAX -> LZMA_VLI_MAX
  - LZMA_VLI_VALUE_UNKNOWN -> LZMA_VLI_UNKNOWN
  - LZMA_HEADER_ERRRO -> LZMA_OPTIONS_ERROR
2008-09-13 12:10:43 +03:00
Lasse Collin 3b34851de1 Sort of garbage collection commit. :-| Many things are still
broken. API has changed a lot and it will still change a
little more here and there. The command line tool doesn't
have all the required changes to reflect the API changes, so
it's easy to get "internal error" or trigger assertions.
2008-08-28 22:53:15 +03:00
Lasse Collin 0809c46534 Add limit of lc + lp <= 4. Now we can allocate the
literal coder as part of the main LZMA encoder or
decoder structure.

Make the LZMA decoder to rely on the current internal API
to free the allocated memory in case an error occurs.
2008-06-19 16:35:08 +03:00
Lasse Collin 7d17818cec Update the code to mostly match the new simpler file format
specification. Simplify things by removing most of the
support for known uncompressed size in most places.
There are some miscellaneous changes here and there too.

The API of liblzma has got many changes and still some
more will be done soon. While most of the code has been
updated, some things are not fixed (the command line tool
will choke with invalid filter chain, if nothing else).

Subblock filter is somewhat broken for now. It will be
updated once the encoded format of the Subblock filter
has been decided.
2008-06-18 18:02:10 +03:00
Lasse Collin 7521bbdc83 Update a comment to use the variable name rep_len_decoder.
(And BTW, the previous commit actually did change the
program logic slightly.)
2008-03-22 01:26:36 +02:00
Lasse Collin 63b74d000e Demystified the "state" variable in LZMA code. Use the
word literal instead of char for better consistency.
There are still some names with _char instead of _literal
in lzma_optimum, these may be changed later.

Renamed length coder variables.

This commit doesn't change the program logic.
2008-03-22 00:57:33 +02:00
Lasse Collin bfde3b24a5 Apply a minor speed optimization to LZMA decoder. 2008-03-11 15:35:34 +02:00
Lasse Collin c0e19e0662 Remove two redundant validity checks from the LZMA decoder.
These are already checked elsewhere, so omitting these
gives (very) tiny speed up.
2008-02-28 10:24:31 +02:00
Lasse Collin 3599dba957 More fixes to LZMA decoder's flush marker handling. 2008-01-14 11:54:56 +02:00
Lasse Collin d160ee3259 Another bug fix for flush marker detection. 2008-01-05 01:20:24 +02:00
Lasse Collin fc67f79f60 Fix stupid bugs in flush marker detection. 2008-01-04 21:37:01 +02:00
Lasse Collin 0029cbbabe Added support for flush marker, which will be in files
that use LZMA_SYNC_FLUSH with encoder (not implemented
yet). This is a new feature in the raw LZMA format,
which isn't supported by old decoders. This shouldn't
be a problem in practice, since lzma_alone_encoder()
will not allow LZMA_SYNC_FLUSH, and thus not allow
creating files on decodable with old decoders.

Made lzma_decoder.c to require tab width of 4 characters
if one wants to fit the code in 80 columns. This makes
the code easier to read.
2008-01-04 21:30:33 +02:00
Lasse Collin bbfd1f6ab0 Moved range decoder initialization (reading the first
five input bytes) from LZMA decoder to range decoder
header. Did the same for decoding of direct bits.
2008-01-04 20:45:05 +02:00
Lasse Collin 5d018dc035 Imported to git. 2007-12-09 00:42:33 +02:00