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2011-04-05liblzma: Fix a memory leak in stream_encoder.c.Lasse Collin1-1/+1
It leaks old filter options structures (hundred bytes or so) every time the lzma_stream is reinitialized. With the xz tool, this happens when compressing multiple files.
2011-04-01Bumped version and liblzma soname to 5.0.2.larhzu/v5.0.2Lasse Collin2-2/+2
2011-03-31liblzma: Fix decoding of LZMA2 streams having no uncompressed data.Lasse Collin1-4/+4
The decoder considered empty LZMA2 streams to be corrupt. This shouldn't matter much with .xz files, because no encoder creates empty LZMA2 streams in .xz. This bug is more likely to cause problems in applications that use raw LZMA2 streams.
2011-01-28Bump package version and liblzma soname to 5.0.1.larhzu/v5.0.1Lasse Collin2-2/+2
2011-01-18Add alloc_size and malloc attributes to a few functions.Lasse Collin1-1/+1
Thanks to Cristian Rodríguez for the original patch.
2010-11-15liblzma: Document the return value of lzma_lzma_preset().Lasse Collin1-0/+3
2010-10-23Bump version to 5.0.0 and liblzma version-info to 5:0:0.Lasse Collin2-5/+5
2010-10-23liblzma: Make lzma_code() check the reserved members in lzma_stream.Lasse Collin1-0/+14
If any of the reserved members in lzma_stream are non-zero or non-NULL, LZMA_OPTIONS_ERROR is returned. It is possible that a new feature in the future is indicated by just setting a reserved member to some other value, so the old liblzma version need to catch it as an unsupported feature.
2010-10-23liblzma: Use 512 as INDEX_GROUP_SIZE.Lasse Collin1-1/+1
This lets compiler use shifting instead of 64-bit division.
2010-10-23liblzma: A few ABI tweaks to reserve space in structures.Lasse Collin3-7/+8
2010-10-21liblzma: Update the comments in the API headers.Lasse Collin14-107/+136
Adding support for LZMA_FINISH for Index encoding and decoding needed tiny additions to the relevant .c files too.
2010-10-19Clean up a few FIXMEs and TODOs.Lasse Collin5-6/+7
lzma_chunk_size() was commented out because it is currently useless.
2010-10-02liblzma: Small fixes to comments in the API headers.Lasse Collin1-3/+7
2010-09-26Fix the preset -3e.Lasse Collin1-0/+1
depth=0 was missing.
2010-09-04Don't set lc=4 with --extreme.Lasse Collin1-1/+0
This should reduce the cases where --extreme makes compression worse. On the other hand, some other files may now benefit slightly less from --extreme.
2010-09-03Tweak the compression presets -0 .. -5.Lasse Collin1-10/+19
"Extreme" mode might need some further tweaking still. Docs were not updated yet.
2010-09-03liblzma: Adjust default depth calculation for HC3 and HC4.Lasse Collin1-3/+4
It was 8 + nice_len / 4, now it is 4 + nice_len / 4. This allows faster settings at lower nice_len values, even though it seems that I won't use automatic depth calcuation with HC3 and HC4 in the presets.
2010-06-02Silence a bogus Valgrind warning.Lasse Collin1-1/+5
When using -O2 with GCC, it liked to swap two comparisons in one "if" statement. It's otherwise fine except that the latter part, which is seemingly never executed, got executed (nothing wrong with that) and then triggered warning in Valgrind about conditional jump depending on uninitialized variable. A few people find this annoying so do things a bit differently to avoid the warning.
2010-06-01Fix a comment.Lasse Collin1-1/+1
2010-05-27Fix lzma_block_compressed_size().Lasse Collin1-3/+3
2010-05-27Remove unused chunk_size.c.Lasse Collin1-67/+0
Thanks to Jonathan Nieder for the reminder.
2010-05-26Rename MIN() and MAX() to my_min() and my_max().Lasse Collin12-21/+22
This should avoid some minor portability issues.
2010-05-26Remove the Subblock filter code for now.Lasse Collin15-2026/+0
The spec isn't finished and the code didn't compile anymore. It won't be included in XZ Utils 5.0.0. It's easy to get it back once the spec is done.
2010-05-14Omit lzma_restrict from the API headers.Lasse Collin3-21/+7
It isn't really useful so omitting it makes things shorter and slightly more readable.
2010-03-06Fix missing initialization in lzma_strm_init().Lasse Collin1-0/+1
With bad luck, lzma_code() could return LZMA_BUF_ERROR when it shouldn't. This has been here since the early days of liblzma. It got triggered by the modifications made to the xz tool in commit 18c10c30d2833f394cd7bce0e6a821044b15832f but only when decompressing .lzma files. Somehow I managed to miss testing that with Valgrind earlier. This fixes <http://bugs.gentoo.org/show_bug.cgi?id=305591>. Thanks to Rafał Mużyło for helping to debug it on IRC.
2010-02-12Collection of language fixes to comments and docs.Lasse Collin28-40/+40
Thanks to Jonathan Nieder.
2010-02-12Fix jl -> jb in ASM files.Lasse Collin2-3/+3
2010-02-12Use __APPLE__ instead of __MACH__ in ASM files.Lasse Collin2-8/+8
This allows the files to work on HURD. Thanks to Jonathan Nieder.
2010-02-07Subtle change to liblzma Block handling API.Lasse Collin2-22/+20
lzma_block.version has to be initialized even for lzma_block_header_decode(). This way a future version of liblzma won't allocate memory in a way that an old application doesn't know how to free it. The subtlety of this change is that all current apps using lzma_block_header_decode() will keep working for now, because the only possible version value is zero, and lzma_block_header_decode() unconditionally sets the version to zero even now. Unless fixed, these apps will break in the future if a new version of the Block options is ever needed.
2010-01-27Use PACKAGE_URL instead of custom PACKAGE_HOMEPAGE.Lasse Collin1-1/+1
2010-01-01Fix _memconfig() functions.Lasse Collin4-19/+20
This affects lzma_memusage() and lzma_memlimit_get().
2009-12-31Revised the Index handling code.Lasse Collin8-724/+1466
This breaks API and ABI but most apps are not affected since most apps don't use this part of the API. You will get a compile error if you are using anything that got broken. Summary of changes: - Ability to store Stream Flags, which are needed for random-access reading in multi-Stream files. - Separate function to set size of Stream Padding. - Iterator structure makes it possible to read the same lzma_index from multiple threads at the same time. - A lot faster code to locate Blocks. - Removed lzma_index_equal() without adding anything to replace it. I don't know what it should do exactly with the new features and what actually needs this function in the first place other than test_index.c, which now has its own code to compare lzma_indexes.
2009-12-31Add missing lzma_nothrow in filter.h.Lasse Collin1-2/+2
2009-12-09Always rely on GCC's auto-import on Windows.Lasse Collin1-7/+9
I understood that this is nicer, because then people don't need to worry about the LZMA_API_STATIC macro. Thanks to Charles Wilson and Keith Marshall.
2009-11-25Fix bugs in lzma_index_read() and lzma_index_cat().Lasse Collin1-11/+19
lzma_index_read() didn't skip over Stream Padding if it was the first record in the Index. lzma_index_cat() didn't combine small Indexes correctly. The test suite was updated to check for these bugs. These bugs didn't affect the xz command line tool or most users of liblzma in any way.
2009-11-25Index decoder fixes.Lasse Collin2-17/+32
The Index decoder code didn't perfectly match the API docs, which said that *i will be set to point to the decoded Index only after decoding has succeeded. The docs were a bit unclear too. Now the decoder will initially set *i to NULL. *i will be set to point to the decoded Index once decoding has succeeded. This simplifies applications too, since it avoids dangling pointers.
2009-11-22Add missing consts to pointer casts.Lasse Collin2-4/+5
2009-11-22Make fastpos.h use tuklib_integer.h instead of bsr.hLasse Collin3-65/+1
when --enable-small has been specified.
2009-11-15Fix wrong indentation caused by incorrect settingsLasse Collin3-13/+13
in the text editor.
2009-11-15Add lzma_physmem().Lasse Collin6-2/+84
I had hoped to keep liblzma as purely a compression library as possible (e.g. file I/O will go into a different library), but it seems that applications linking agaisnt liblzma need some way to determine the memory usage limit, and knowing the amount of RAM is one reasonable way to help making such decisions. Thanks to Jonathan Nieder for the original patch.
2009-11-14Fix a design error in liblzma API.Lasse Collin19-117/+273
Originally the idea was that using LZMA_FULL_FLUSH with Stream encoder would read the filter chain from the same array that was used to intialize the Stream encoder. Since most apps wouldn't use LZMA_FULL_FLUSH, most apps wouldn't need to keep the filter chain available after initializing the Stream encoder. However, due to my mistake, it actually required keeping the array always available. Since setting the new filter chain via the array used at initialization time is not a nice way to do it for a couple of reasons, this commit ditches it and introduces lzma_filters_update(). This new function replaces also the "persistent" flag used by LZMA2 (and to-be-designed Subblock filter), which was also an ugly thing to do. Thanks to Alexey Tourbin for reminding me about the problem that Stream encoder used to require keeping the filter chain allocated.
2009-10-17Fix wrong function name in the previous commit.Lasse Collin2-2/+2
It was meant to be lzma_filters_copy(), not lzma_filters_dup().
2009-10-17Add lzma_filters_copy().Lasse Collin2-0/+113
This will be needed internally by liblzma once I fix a design mistake in the encoder API. This function may be useful to applications too so it's good to export it.
2009-10-04Use a tuklib module for integer handling.Lasse Collin19-51/+29
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.
2009-10-02Use unaligned access (if possible) on both endiannessesLasse Collin1-2/+2
in lz_encoder_hash.h.
2009-10-02Make liblzma produce the same output on both endiannesses.Lasse Collin6-14/+128
Seems that it is a problem in some cases if the same version of XZ Utils produces different output on different endiannesses, so this commit fixes that problem. The output will still vary between different XZ Utils versions, but I cannot avoid that for now. This commit bloatens the code on big endian systems by 1 KiB, which should be OK since liblzma is bloated already. ;-)
2009-09-15Fix incorrect use of "restrict".Lasse Collin3-4/+4
2009-09-12Fix GCC version check for nothrow attribute.Lasse Collin1-1/+1
2009-09-12A few grammar fixes.Lasse Collin5-11/+11
Thanks to Christian Weisgerber for pointing out some of these.
2009-09-11Fix a couple of warnings.Lasse Collin4-10/+7
2009-08-31Revert 43f44160b1ddcbf7e5205c37db09b3bebe7226f9Lasse Collin2-10/+4
and use a fix that works on all systems using GNU assembler. Maybe the assembler code is used e.g. on Solaris x86 but let's worry about it if this doesn't work on it.
2009-08-29Fix x86 assembler on GCC 3.Lasse Collin2-4/+10
Thanks to Karl Berry.
2009-08-27Bumped version to 4.999.9beta.Lasse Collin1-1/+1
2009-08-27Updates to liblzma API headers.Lasse Collin12-197/+275
Added lzma_nothrow for every function. It adds throw() when the header is used in C++ code. Some lzma_attrs were added or removed. Lots of comments were improved.
2009-08-16Fix data corruption in LZ/LZMA2 encoder.Lasse Collin1-1/+1
Thanks to Jonathan Stott for the bug report.
2009-07-18Added public domain notice into a few files.Lasse Collin2-0/+14
2009-07-10BCJ filters: Reject invalid start offsets with LZMA_OPTIONS_ERROR.Lasse Collin8-8/+12
This is a quick and slightly dirty fix to make the code conform to the latest file format specification. Without this patch, it's possible to make corrupt files by specifying start offset that is not a multiple of the filter's alignment. Custom start offset is almost never used, so this was only a minor bug. The xz command line tool doesn't validate the start offset, so one will get a bit unclear error message if trying to use an invalid start offset.
2009-07-06Use sed instead of $(SED) so that we don't need toLasse Collin1-1/+1
use AC_PROG_SED. We don't do anything fancy with sed, so this should work OK. libtool 2.2 sets SED but 1.5 doesn't, so $(SED) happened to work when using libtool 2.2.
2009-07-05Use @PACKAGE_HOMEPAGE@ in liblzma.pc.in.Lasse Collin1-1/+1
2009-06-30Build system fixesLasse Collin18-359/+365
Don't use libtool convenience libraries to avoid recently discovered long-standing subtle but somewhat severe bugs in libtool (at least 1.5.22 and 2.2.6 are affected). It was found when porting XZ Utils to Windows <http://lists.gnu.org/archive/html/libtool/2009-06/msg00070.html> but the problem is significant also e.g. on GNU/Linux. Unless --disable-shared is passed to configure, static library built from a set of convenience libraries will contain PIC objects. That is, while libtool builds non-PIC objects too, only PIC objects will be used from the convenience libraries. On 32-bit x86 (tested on mobile XP2400+), using PIC instead of non-PIC makes the decompressor 10 % slower with the default CFLAGS. So while xz was linked against static liblzma by default, it got the slower PIC objects unless --disable-shared was used. I tend develop and benchmark with --disable-shared due to faster build time, so I hadn't noticed the problem in benchmarks earlier. This commit also adds support for building Windows resources into liblzma and executables.
2009-06-28Add -no-undefined to get shared liblzma on Windows.Lasse Collin1-1/+1
2009-06-27Moved the Windows resource files outside the windows directoryLasse Collin1-0/+5
to prepare for building them with Autotools.
2009-06-27Hopefully improved portability of the assembler code inLasse Collin2-2/+14
Autotools based builds on Windows.
2009-06-26Basic support for building with Cygwin and MinGW usingLasse Collin4-9/+14
the Autotools based build system. It's not good yet, more fixes will follow.
2009-06-26Fix @variables@ to $(variables) in Makefile.am files.Lasse Collin8-25/+25
Fix the ordering of libgnu.a and LTLIBINTL on the linker command line and added missing LTLIBINTL to tests/Makefile.am.
2009-06-04Fix purporse -> purpose. Thanks to Andrew Dudman.Lasse Collin1-1/+1
Released .xz spec 1.0.2 due to this fix too.
2009-05-26Make the raw value of the Check field available to applicationsLasse Collin4-31/+42
via lzma_block structure. This changes ABI but not doesn't break API.
2009-05-02Use a GCC-specific #pragma instead of GCC-specificLasse Collin2-5/+5
-Wno-uninitialized to silence a bogus warning.
2009-04-28Fixed a crash in liblzma.Lasse Collin11-13/+13
liblzma tries to avoid useless free()/malloc() pairs in initialization when multiple files are handled using the same lzma_stream. This didn't work with filter chains due to comparison of wrong pointers in lzma_next_coder_init(), making liblzma think that no memory reallocation is needed even when it actually is. Easy way to trigger this bug is to decompress two files with a single xz command. The first file should have e.g. x86+LZMA2 as the filter chain, and the second file just LZMA2.
2009-04-15Fix uint32_t -> size_t in ARM and ARM-Thumb filters.Lasse Collin2-2/+2
On 64-bit system it would have gone into infinite loop if a single input buffer was over 4 GiB (unlikely).
2009-04-13Put the interesting parts of XZ Utils into the public domain.Lasse Collin143-1459/+617
Some minor documentation cleanups were made at the same time.
2009-04-10Fix off-by-one in LZ decoder.Lasse Collin1-1/+1
Fortunately, this bug had no security risk other than accepting some corrupt files as valid.
2009-02-18Added files missing from the previous commit.Lasse Collin2-1/+39
2009-02-17Added lzma_easy_buffer_encode(). Splitted easy.c into smallLasse Collin6-47/+175
pieces to avoid unneeded dependencies making statically linked applications bigger than needed.
2009-02-13Changed how the version number is specified in various places.Lasse Collin2-4/+68
Now configure.ac will get the version number directly from src/liblzma/api/lzma/version.h. The intent is to reduce the number of places where the version number is duplicated. In future, support for displaying Git commit ID may be added too.
2009-02-13Improve support for DOS-like systems.Lasse Collin2-6/+6
Here DOS-like means DOS, Windows, and OS/2.
2009-02-09Let the user specify custom CFLAGS on the make commandLasse Collin1-1/+1
line. Previously custom CFLAGS worked only when they were passed to configure.
2009-02-08Add a separate internal function to initialize the CRC32Lasse Collin3-3/+12
table, which is used also by LZ encoder. This was needed because calling lzma_crc32() and ignoring the result is a no-op due to lzma_attr_pure.
2009-02-07Support LZMA_API_STATIC in assembler files toLasse Collin2-0/+6
avoid __declspec(dllexport) equivalent.
2009-02-07Introduced LZMA_API_STATIC macro, which the applicationsLasse Collin2-8/+25
need to #define when linking against static liblzma on platforms like Windows. Most developers don't need to care about LZMA_API_STATIC at all.
2009-02-02Updated the x86 assembler code:Lasse Collin2-22/+144
- Use call/ret pair to get instruction pointer for PIC. - Use PIC only if PIC or __PIC__ is #defined. - The code should work on MinGW and Darwin in addition to GNU/Linux and Solaris.
2009-02-02Modify LZMA_API macro so that it works on Windows withLasse Collin54-176/+177
other compilers than MinGW. This may hurt readability of the API headers slightly, but I don't know any better way to do this.
2009-02-01Fix a bug in lzma_block_buffer_decode(), although thisLasse Collin1-4/+4
function should be rewritten anyway.
2009-02-01Added initial version of raw buffer-to-buffer codingLasse Collin4-20/+221
functions, and cleaned up filter.h API header a little. May be very buggy, not tested yet.
2009-02-01Use __cdecl also for function pointers in liblzma API whenLasse Collin3-20/+20
on Windows.
2009-01-31Add LZMA_API to liblzma API headers. It's useful at leastLasse Collin13-86/+128
on Windows. sysdefs.h no longer #includes lzma.h, so lzma.h has to be #included separately where needed.
2009-01-31Fix two lines in lzma.h on which the # wasn't at theLasse Collin1-2/+2
beginning of the line.
2009-01-31Add support for using liblzma headers in MSVC, which has noLasse Collin1-24/+46
stdint.h or inttypes.h.
2009-01-31Fix # -> ## in a macro in lzma.h.Lasse Collin1-1/+1
2009-01-30Remove dangling crc64_init.c.Lasse Collin1-55/+0
2009-01-28Fix uninitialized variables in alone_decoder.c. This bug wasLasse Collin1-0/+2
triggered by the previous commit, since these variables were not used by anything before support for a preset dictionary.
2009-01-27Added initial support for preset dictionary for raw LZMA1Lasse Collin8-27/+77
and LZMA2. It is not supported by the .xz format or the xz command line tool yet.
2009-01-26Regenerate the CRC tables without trailing blanks.Lasse Collin4-2024/+2024
2009-01-26remove trailing blanks from all but .xz filesJim Meyering2-2/+2
2009-01-26Add lzma_block_buffer_decode().Lasse Collin3-0/+129
2009-01-26Add more sanity checks to lzma_stream_buffer_decode().Lasse Collin1-0/+7
2009-01-26Avoid hardcoded constant in easy.c.Lasse Collin1-1/+1
2009-01-26Tiny bit better sanity check in block_util.cLasse Collin1-1/+1
2009-01-25Fix a dumb bug in Block decoder, which made it returnLasse Collin1-3/+3
LZMA_DATA_ERROR with valid data. The bug was added in e114502b2bc371e4a45449832cb69be036360722.
2009-01-23Added lzma_stream_buffer_decode() and made minor cleanups.Lasse Collin4-2/+144
2009-01-22Fix a comment.Lasse Collin1-1/+1
2009-01-20Add some single-call buffer-to-buffer coding functions.Lasse Collin8-26/+744
2009-01-20Block encoder cleanupsLasse Collin2-21/+32
2009-01-20Use LZMA_PROG_ERROR in lzma_code() as documented in base.h.Lasse Collin1-16/+8
2009-01-19Fix handling of non-fatal errors in lzma_code().Lasse Collin1-1/+8
2009-01-19Move some LZMA2 constants to lzma2_encoder.h so that theyLasse Collin3-14/+16
can be used outside lzma2_encoder.c.
2009-01-19Remove dead code.Lasse Collin1-8/+0
2009-01-17Beta was supposed to be API stable but I had forgot to renameLasse Collin7-11/+11
lzma_memlimit_encoder and lzma_memlimit_decoder to lzma_raw_encoder_memlimit and lzma_raw_decoder_memlimit. :-( Now it is fixed. Hopefully it doesn't cause too much trouble to those who already thought API is stable.
2008-12-31Bumped version to 4.999.8beta right after the releaseLasse Collin1-1/+1
of 4.999.7beta.
2008-12-31Prepare for 4.999.7beta release.Lasse Collin1-1/+1
2008-12-31Cleaned up some comments in the API headers.Lasse Collin3-14/+15
2008-12-31Renamed lzma_options_simple to lzma_options_bcj in the API.Lasse Collin6-18/+18
The internal implementation is still using the name "simple". It may need some cleanups, so I look at it later.
2008-12-31Updated src/liblzma/Makefile.am to use liblzma.pc.in, whichLasse Collin1-2/+2
should have been in the previous commit.
2008-12-31Remove lzma_init() and other init functions from liblzma API.Lasse Collin26-431/+287
Half of developers were already forgetting to use these functions, which could have caused total breakage in some future liblzma version or even now if --enable-small was used. Now liblzma uses pthread_once() to do the initializations unless it has been built with --disable-threads which make these initializations thread-unsafe. When --enable-small isn't used, liblzma currently gets needlessly linked against libpthread (on systems that have it). While it is stupid for now, liblzma will need threads in future anyway, so this stupidity will be temporary only. When --enable-small is used, different code CRC32 and CRC64 is now used than without --enable-small. This made the resulting binary slightly smaller, but the main reason was to clean it up and to handle the lack of lzma_init_check(). The pkg-config file lzma.pc was renamed to liblzma.pc. I'm not sure if it works correctly and portably for static linking (Libs.private includes -pthread or other operating system specific flags). Hopefully someone complains if it is bad. lzma_rc_prices[] is now included as a precomputed array even with --enable-small. It's just 128 bytes now that it uses uint8_t instead of uint32_t. Smaller array seemed to be at least as fast as the more bloated uint32_t array on x86; hopefully it's not bad on other architectures.
2008-12-27Revert a change made in 3b34851de1eaf358cf9268922fa0eeed8278d680Lasse Collin1-15/+8
that was related to LZMA_MODE_FAST. The original code is slightly faster although it compresses slightly worse. But since it is fast mode, it is better to select the faster version.
2008-12-27Bunch of liblzma tweaks, including some API changes.Lasse Collin23-262/+294
The API and ABI should now be very close to stable, although the code behind it isn't yet.
2008-12-18Updated Makefile.am that was missing from the previous commit.Lasse Collin1-1/+0
2008-12-17Remove the alignment functions for now. Maybe they willLasse Collin4-176/+0
be added back in some form later, but the current version wasn't modular, so it would need fixing anyway.
2008-12-15Fix a dumb bug in .lzma decoder which was introduced inLasse Collin1-15/+14
the previous commit. (Probably the previous commit has other bugs too, it wasn't tested.)
2008-12-15Bunch of liblzma API cleanups and fixes.Lasse Collin26-422/+857
2008-12-15The LZMA2 decoder fix introduced a bug to LZ decoder,Lasse Collin1-10/+23
which made LZ decoder return too early after dictionary reset. This fixes it.
2008-12-15Fix data corruption in LZMA2 decoder.Lasse Collin3-8/+32
2008-12-09Make the memusage functions of LZMA1 and LZMA2 encodersLasse Collin3-16/+35
to validate the filter options. Add missing validation to LZMA2 encoder when options are changed in the middle of encoding.
2008-12-01Validate the filter chain before checking filter-specificLasse Collin1-4/+10
memory usage.
2008-12-01Make the memusage functions of LZMA1 and LZMA2 decodersLasse Collin3-9/+17
to validate the filter options.
2008-12-01Added the changes for Delta filter that should have beenLasse Collin2-2/+2
part of 656ec87882ee74b192c4ea4a233a235eca7b04d4.
2008-12-01LZMA2 decoder cleanups. Make it require new LZMA propertiesLasse Collin1-54/+41
also in the first LZMA chunk after a dictionary reset in uncompressed chunk.
2008-12-01Added lzma_delta_coder_memusage() which also validatesLasse Collin8-39/+75
the options.
2008-11-25Remove the nowadays unneeded memory limitting malloc() wrapper.Lasse Collin5-498/+0
2008-11-23VLI encoder and decoder cleanups. Made encoder returnLasse Collin2-13/+33
LZMA_PROG_ERROR in single-call mode if there's no output space.
2008-11-19Oh well, big messy commit again. Some highlights:Lasse Collin20-358/+407
- Updated to the latest, probably final file format version. - Command line tool reworked to not use threads anymore. Threading will probably go into liblzma anyway. - Memory usage limit is now about 30 % for uncompression and about 90 % for compression. - Progress indicator with --verbose - Simplified --help and full --long-help - Upgraded to the last LGPLv2.1+ getopt_long from gnulib. - Some bug fixes
2008-10-07Made the preset numbering more logical in liblzma API.Lasse Collin3-12/+13
2008-09-30Fixed Stream decoder to actually use the first_stream variable.Lasse Collin1-0/+5
2008-09-30Fixed uninitialized variable in Stream decoder.Lasse Collin1-0/+1
2008-09-27Fix conflicting Subblock helper filter's ID.Lasse Collin1-1/+1
2008-09-27Changed magic bytes to match the updated spec. FilenameLasse Collin2-3/+3
suffix wasn't changed yet.
2008-09-27Some API changes, bug fixes, cleanups etc.Lasse Collin30-301/+351
2008-09-17Miscellaneous LZ and LZMA encoder cleanupsLasse Collin5-117/+29
2008-09-13LZ decoder cleanupLasse Collin1-3/+2
2008-09-13Renamed constants:Lasse Collin45-189/+185
- LZMA_VLI_VALUE_MAX -> LZMA_VLI_MAX - LZMA_VLI_VALUE_UNKNOWN -> LZMA_VLI_UNKNOWN - LZMA_HEADER_ERRRO -> LZMA_OPTIONS_ERROR
2008-09-12Improved the Stream Flags handling API.Lasse Collin7-18/+123
2008-09-11Remove a check from Block encoder that should have alreadyLasse Collin1-5/+0
been removed in 2ba01bfa755e47ff6af84a978e3c8d63d7d2775e.
2008-09-11Remove bogus #includes.Lasse Collin4-36/+0
2008-09-10Bumped version to 4.999.6alpha.Lasse Collin1-1/+1
2008-09-10Check for LZMA_FILTER_RESERVED_START in filter_flags_encoder.c.larhzu/v4.999.5alphaLasse Collin1-3/+4
Use LZMA_PROG_ERROR instead of LZMA_HEADER_ERROR if the Filter ID is in the reserved range. This allows Block Header encoder to detect unallowed Filter IDs, which is good for Stream encoder.
2008-09-10Filter handling cleanupsLasse Collin6-151/+156
2008-09-10CommentsLasse Collin1-1/+5
2008-09-10Cleaned up Block encoder and moved the no longer sharedLasse Collin5-100/+66
code from block_private.h to block_decoder.c. Now the Block encoder doesn't need compressed_size and uncompressed_size from lzma_block structure to be initialized.
2008-09-07Changed Filter ID of LZMA to 0x20.Lasse Collin1-1/+1
2008-09-06CommentsLasse Collin5-39/+65
2008-09-06Some API cleanupsLasse Collin8-161/+279
2008-09-04Don't allow LZMA_SYNC_FLUSH with decoders anymore. There'sLasse Collin3-3/+2
simply nothing that would use it. Allow LZMA_FINISH to the decoders, which will usually ignore it (auto decoder and Stream decoder being exceptions).
2008-09-02Auto decoder cleanupLasse Collin1-1/+1
2008-09-02Updated auto decoder to handle LZMA_CONCATENATED when decodingLasse Collin1-16/+71
LZMA_Alone files. Decoding of concatenated LZMA_Alone files is intentionally not supported, so it is better to put this in auto decoder than LZMA_Alone decoder.
2008-09-02Stream decoder cleanupsLasse Collin1-25/+32
2008-09-02Some fixes to LZ encoder.Lasse Collin3-75/+94
2008-08-31Fix wrong pointer calculation in LZMA encoder.Lasse Collin1-1/+3
2008-08-28Sort of garbage collection commit. :-| Many things are stillLasse Collin140-6879/+8290
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.
2008-06-20Remove some redundant code from LZMA encoder.Lasse Collin1-14/+1
2008-06-19Add limit of lc + lp <= 4. Now we can allocate theLasse Collin6-91/+43
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.
2008-06-18CommentsLasse Collin1-5/+2
2008-06-18Update the code to mostly match the new simpler file formatLasse Collin92-6733/+3646
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.
2008-06-11Fix uninitialized variable in LZMA encoder. This wasLasse Collin1-0/+2
introduced in 369f72fd656f537a9a8e06f13e6d0d4c242be22f.
2008-06-01Fix a buffer overflow in the LZMA encoder. It was due to myLasse Collin8-620/+532
misunderstanding of the code. There's no tiny fix for this problem, so I also cleaned up the code in general. This reduces the speed of the encoder 2-5 % in the fastest compression mode ("lzma -1"). High compression modes should have no noticeable performance difference. This commit breaks things (especially LZMA_SYNC_FLUSH) but I will fix them once the new format and LZMA2 has been roughly implemented. Plain LZMA won't support LZMA_SYNC_FLUSH at all and won't be supported in the new .lzma format. This may change still but this is what it looks like now. Support for known uncompressed size (that is, LZMA or LZMA2 without EOPM) is likely to go away. This means there will be API changes.
2008-05-11Remove support for pre-C89 libc versions that lack memcpy,Lasse Collin1-1/+1
memmove, and memset.
2008-05-06Bunch of grammar fixes from meyering.Lasse Collin1-3/+3
2008-05-06Typo fixLasse Collin1-1/+1
2008-04-28Fixed wrong spelling "limitter" to "limiter". This affectsLasse Collin5-11/+11
liblzma's API.
2008-04-25Prevent LZ encoder from hanging with known uncompressedlarhzu/v4.999.3alphaLasse Collin1-2/+7
size. The "fix" breaks LZMA_SYNC_FLUSH at end of stream with known uncompressed size, but since it currently seems likely that support for encoding with known uncompressed size will go away anyway, I'm not fixing this problem now.
2008-04-25Removed src/liblzma/common/sysdefs.h symlink, which wasLasse Collin5-5/+3
annoying, because "make dist" put two copies of sysdefs.h into the tarball instead of the symlink.
2008-04-25Bumped version number to 4.999.3alpha. It will become 5.0.0Lasse Collin1-12/+10
once we have a stable release (won't be very soon). The version number is no longer related to version of LZMA SDK. Made some small Automake-related changes to toplevel Makefile.am and configure.ac.
2008-04-24Fix a memory leak by calling free(extra->data) inLasse Collin1-0/+1
lzma_extra_free().
2008-04-24Added two assert()s.Lasse Collin1-1/+3
2008-04-24Switch to uint16_t as the type of range coder probabilities.Lasse Collin1-6/+19
2008-04-24Fix wrong return type (uint32_t -> bool).Lasse Collin2-2/+2
2008-04-24Fix data corruption in LZ encoder with LZMA_SYNC_FLUSH.Lasse Collin3-5/+38
2008-04-24Fix fastpos problem in Makefile.am when built with --enable-small.Lasse Collin1-1/+4
2008-04-24Use 64-bit integer as range encoder's cache size. This fixes aLasse Collin1-1/+1
theoretical data corruption, which should be very hard to trigger even intentionally.
2008-03-24Replaced the range decoder optimization that used arithmeticLasse Collin1-37/+16
right shift with as fast version that doesn't need arithmetic right shift. Removed the related check from configure.ac.
2008-03-22Take advantage of arithmetic right shift in range decoder.Lasse Collin1-15/+37
2008-03-22Update a comment to use the variable name rep_len_decoder.Lasse Collin1-1/+1
(And BTW, the previous commit actually did change the program logic slightly.)
2008-03-22Demystified the "state" variable in LZMA code. Use theLasse Collin6-70/+107
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.
2008-03-14Fix data corruption in LZMA encoder. Note that this bug wasLasse Collin1-0/+4
specific to liblzma and was *not* present in LZMA SDK.
2008-03-14Fix a comment API header.Lasse Collin1-1/+1
2008-03-12Make lzma_stream.next_in const. Let's see if anyone complains.Lasse Collin1-1/+1
2008-03-11Apply a minor speed optimization to LZMA decoder.Lasse Collin1-42/+43
2008-03-11Initialize the last byte of the dictionary to zero so thatLasse Collin1-0/+1
lz_get_byte(lz, 0) returns zero. This was broken by 1a3b21859818e4d8e89a1da99699233c1bfd197d.
2008-03-10Really fix the price count initialization.Lasse Collin1-2/+2
2008-03-10Initialize align_price_count and match_price_count inLasse Collin1-0/+2
lzma_encoder_init.c. While we don't call fill_distances_prices() and fill_align_prices() in lzma_lzma_encoder_init(), we still need to initialize these two variables so that the fill functions get called in lzma_encoder_getoptimum.c in the beginning of a stream.
2008-03-10Always initialize lz->temp_size in lz_decoder.c. temp_size didLasse Collin1-5/+6
get initialized as a side-effect after allocating a new decoder, but not when the decoder was reused.
2008-03-10Don't fill allocated memory with 0xFD when debugging isLasse Collin1-3/+4
enabled. It hides errors from Valgrind.
2008-02-28Remove two redundant validity checks from the LZMA decoder.Lasse Collin1-19/+4
These are already checked elsewhere, so omitting these gives (very) tiny speed up.
2008-02-02Don't memzero() the history buffer when initializing LZLasse Collin1-4/+3
decoder. There's no danger of information leak here, so it isn't required. Doing memzero() takes a lot of time with large dictionaries, which could make it easier to construct DoS attack to consume too much CPU time.
2008-02-01Do uncompressed size validation in raw encoder. This wayLasse Collin1-17/+73
it gets done for not only raw encoder, but also Block and LZMA_Alone encoders.
2008-02-01Avoid unneeded function call in raw_common.c.Lasse Collin1-9/+11
2008-01-26Added note.GNU-stack to x86 assembler files. It is neededLasse Collin2-0/+18
when using non-executable stack.
2008-01-26Added api/lzma/easy.h. I had forgot to add this to theLasse Collin1-0/+174
git repo. Thanks to Stephan Kulow.
2008-01-26Return LZMA_HEADER_ERROR if LZMA_SYNC_FLUSH is used with anyLasse Collin2-0/+17
of the so called simple filters. If there is demand, limited support for LZMA_SYNC_FLUSH may be added in future. After this commit, using LZMA_SYNC_FLUSH shouldn't cause undefined behavior in any situation.
2008-01-25Combine lzma_options_block validation needed by both BlockLasse Collin3-48/+71
encoder and decoder, and put the shared things to block_private.h. Improved the checks a little so that they may detect too big Compressed Size at initialization time if lzma_options_block.total_size or .total_limit is known. Allow encoding and decoding Blocks with combinations of fields that are not allowed by the file format specification. Doing this requires that the application passes such a combination in lzma_options_lzma; liblzma doesn't do that, but it's not impossible that someone could find them useful in some custom file format.
2008-01-25Improved the memory limitter:Lasse Collin2-14/+118
- Added lzma_memlimit_max() and lzma_memlimit_reached() API functions. - Added simple estimation of malloc()'s memory usage overhead. - Fixed integer overflow detection in lzma_memlimit_alloc(). - Made some white space cleanups and added more comments. The description of lzma_memlimit_max() in memlimit.h is bad and should be improved.
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-14 19:04:29 +0000