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history.txt
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history.txt
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HISTORY of the LZMA SDK
-----------------------
4.57 2007-12-12
-------------------------
- Speed optimizations in Ñ++ LZMA Decoder.
- Small changes for more compatibility with some C/C++ compilers.
4.49 beta 2007-07-05
-------------------------
- .7z ANSI-C Decoder:
- now it supports BCJ and BCJ2 filters
- now it supports files larger than 4 GB.
- now it supports "Last Write Time" field for files.
- C++ code for .7z archives compressing/decompressing from 7-zip
was included to LZMA SDK.
4.43 2006-06-04
-------------------------
- Small changes for more compatibility with some C/C++ compilers.
4.42 2006-05-15
-------------------------
- Small changes in .h files in ANSI-C version.
4.39 beta 2006-04-14
-------------------------
- Bug in versions 4.33b:4.38b was fixed:
C++ version of LZMA encoder could not correctly compress
files larger than 2 GB with HC4 match finder (-mfhc4).
4.37 beta 2005-04-06
-------------------------
- Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined.
4.35 beta 2005-03-02
-------------------------
- Bug was fixed in C++ version of LZMA Decoder:
If encoded stream was corrupted, decoder could access memory
outside of allocated range.
4.34 beta 2006-02-27
-------------------------
- Compressing speed and memory requirements for compressing were increased
- LZMA now can use only these match finders: HC4, BT2, BT3, BT4
4.32 2005-12-09
-------------------------
- Java version of LZMA SDK was included
4.30 2005-11-20
-------------------------
- Compression ratio was improved in -a2 mode
- Speed optimizations for compressing in -a2 mode
- -fb switch now supports values up to 273
- Bug in 7z_C (7zIn.c) was fixed:
It used Alloc/Free functions from different memory pools.
So if program used two memory pools, it worked incorrectly.
- 7z_C: .7z format supporting was improved
- LZMA# SDK (C#.NET version) was included
4.27 (Updated) 2005-09-21
-------------------------
- Some GUIDs/interfaces in C++ were changed.
IStream.h:
ISequentialInStream::Read now works as old ReadPart
ISequentialOutStream::Write now works as old WritePart
4.27 2005-08-07
-------------------------
- Bug in LzmaDecodeSize.c was fixed:
if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
decompressing worked incorrectly.
4.26 2005-08-05
-------------------------
- Fixes in 7z_C code and LzmaTest.c:
previous versions could work incorrectly,
if malloc(0) returns 0
4.23 2005-06-29
-------------------------
- Small fixes in C++ code
4.22 2005-06-10
-------------------------
- Small fixes
4.21 2005-06-08
-------------------------
- Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
- New additional version of ANSI-C LZMA Decoder with zlib-like interface:
- LzmaStateDecode.h
- LzmaStateDecode.c
- LzmaStateTest.c
- ANSI-C LZMA Decoder now can decompress files larger than 4 GB
4.17 2005-04-18
-------------------------
- New example for RAM->RAM compressing/decompressing:
LZMA + BCJ (filter for x86 code):
- LzmaRam.h
- LzmaRam.cpp
- LzmaRamDecode.h
- LzmaRamDecode.c
- -f86 switch for lzma.exe
4.16 2005-03-29
-------------------------
- Bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder):
If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
decoder could access memory outside of allocated range.
- Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
Old version of LZMA Decoder now is in file LzmaDecodeSize.c.
LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
- Small speed optimization in LZMA C++ code
- filter for SPARC's code was added
- Simplified version of .7z ANSI-C Decoder was included
4.06 2004-09-05
-------------------------
- Bug in v4.05 was fixed:
LZMA-Encoder didn't release output stream in some cases.
4.05 2004-08-25
-------------------------
- Source code of filters for x86, IA-64, ARM, ARM-Thumb
and PowerPC code was included to SDK
- Some internal minor changes
4.04 2004-07-28
-------------------------
- More compatibility with some C++ compilers
4.03 2004-06-18
-------------------------
- "Benchmark" command was added. It measures compressing
and decompressing speed and shows rating values.
Also it checks hardware errors.
4.02 2004-06-10
-------------------------
- C++ LZMA Encoder/Decoder code now is more portable
and it can be compiled by GCC on Linux.
4.01 2004-02-15
-------------------------
- Some detection of data corruption was enabled.
LzmaDecode.c / RangeDecoderReadByte
.....
{
rd->ExtraBytes = 1;
return 0xFF;
}
4.00 2004-02-13
-------------------------
- Original version of LZMA SDK
HISTORY of the LZMA
-------------------
2001-2007: Improvements to LZMA compressing/decompressing code,
keeping compatibility with original LZMA format
1996-2001: Development of LZMA compression format
Some milestones:
2001-08-30: LZMA compression was added to 7-Zip
1999-01-02: First version of 7-Zip was released
End of document