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2022-11-28liblzma: Add lzma_str_to_filters, _from_filters, and _list_filters.Lasse Collin1-0/+1
lzma_str_to_filters() uses static error messages which makes them not very precise. It tells the position in the string where an error occurred though which helps quite a bit if applications take advantage of it. Dynamic error messages can be added later with a new flag if it seems important enough.
2022-11-09liblzma: Add .lz support to lzma_auto_decoder().Lasse Collin1-1/+2
Thanks to Michał Górny for the original patch.
2022-11-09liblzma: Add .lz (lzip) decompression support (format versions 0 and 1).Lasse Collin1-0/+5
Support for format version 0 was removed from lzip 1.18 for some reason. .lz format version 0 files are rare (and old) but some source packages were released in this format, and some people might have personal files in this format too. It's very little extra code to support it along side format version 1 so this commits adds support for both. The Sync Flush marker extentension to the original .lz format version 1 isn't supported. It would require changes to the LZMA decoder itself. Such files are very rare anyway. See the API doc for lzma_lzip_decoder() for more details about the .lz format support. Thanks to Michał Górny for the original patch.
2022-11-09liblzma: Add the missing Makefile.inc change for --disable-microlzma.Lasse Collin1-2/+10
This was forgotten from commit 59c4d6e1390f6f4176f43ac1dad1f7ac03c449b8.
2022-10-05liblzma: Fix a compilation issue when encoders are disabled.Jia Tan1-3/+4
When encoders were disabled and threading enabled, outqueue.c and outqueue.h were not compiled. The multi threaded decoder required these files, so compilation failed.
2022-03-07liblzma: Add threaded .xz decompressor.Lasse Collin1-0/+5
I realize that this is about a decade late. Big thanks to Sebastian Andrzej Siewior for the original patch. I made a bunch of smaller changes but after a while quite a few things got rewritten. So any bugs in the commit were created by me.
2021-09-05liblzma: Rename EROFS LZMA to MicroLZMA.Lasse Collin1-2/+2
It still exists primarily for EROFS but MicroLZMA is a more generic name (that hopefully doesn't clash with something that already exists).
2021-01-14liblzma: Add EROFS LZMA encoder and decoder.Lasse Collin1-0/+2
Right now this is just a planned extra-compact format for use in the EROFS file system in Linux. At this point it's possible that the format will either change or be abandoned and removed completely. The special thing about the encoder is that it uses the output-size-limited encoding added in the previous commit. EROFS uses fixed-sized blocks (e.g. 4 KiB) to hold compressed data so the compressors must be able to create valid streams that fill the given block size.
2017-04-24liblzma: Add lzma_file_info_decoder().Lasse Collin1-0/+1
2017-03-30liblzma: Make lzma_index_decoder_init() visible to other liblzma funcs.Lasse Collin1-0/+1
This is to allow other functions to use it without going via the public API (lzma_index_decoder()).
2015-11-03Build: Don't omit lzma_cputhreads() unless using --disable-threads.Lasse Collin1-1/+4
Previously it was omitted if encoders were disabled with --disable-encoders. It didn't make sense and it also broke the build.
2014-07-25liblzma: Add lzma_memcmplen() for fast memory comparison.Lasse Collin1-0/+1
This commit just adds the function. Its uses will be in separate commits. This hasn't been tested much yet and it's perhaps a bit early to commit it but if there are bugs they should get found quite quickly. Thanks to Jun I Jin from Intel for help and for pointing out that string comparison needs to be optimized in liblzma.
2014-06-18liblzma: Add lzma_cputhreads().Lasse Collin1-0/+1
2013-09-17liblzma: Add block_buffer_encoder.h into Makefile.inc.Lasse Collin1-0/+1
This should have been in b465da5988dd59ad98fda10c2e4ea13d0b9c73bc.
2011-04-11liblzma: Add lzma_stream_encoder_mt() for threaded compression.Lasse Collin1-0/+7
This is the simplest method to do threading, which splits the uncompressed data into blocks and compresses them independently from each other. There's room for improvement especially to reduce the memory usage, but nevertheless, this is a good start.
2011-04-11liblzma: Make lzma_stream_encoder_init() static (second try).Lasse Collin1-1/+0
It's an internal function and it's not needed by anything outside stream_encoder.c.
2011-04-11Revert "liblzma: Make lzma_stream_encoder_init() static."Lasse Collin1-0/+1
This reverts commit 352ac82db5d3f64585c07b39e4759388dec0e4d7. I don't know what I was thinking.
2011-04-10liblzma: Make lzma_stream_encoder_init() static.Lasse Collin1-1/+0
It's an internal function and it's not needed by anything outside stream_encoder.c.
2009-11-22Make fastpos.h use tuklib_integer.h instead of bsr.hLasse Collin1-1/+0
when --enable-small has been specified.
2009-11-15Add lzma_physmem().Lasse Collin1-0/+1
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.
2009-06-30Build system fixesLasse Collin1-0/+67
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.
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