history.txt revision baa3858d3f5d128a5c8466b700098109edcad5f2 
1HISTORY of the LZMA SDK
2-----------------------
3
49.18 beta      2010-11-02
5-------------------------	
6- New small SFX module for installers (SfxSetup).
7
8
99.12 beta      2010-03-24
10-------------------------
11- The BUG in LZMA SDK 9.* was fixed: LZMA2 codec didn't work,
12  if more than 10 threads were used (or more than 20 threads in some modes).
13
14
159.11 beta      2010-03-15
16-------------------------
17- PPMd compression method support
18   
19
209.09           2009-12-12
21-------------------------
22- The bug was fixed:
23   Utf16_To_Utf8 funstions in UTFConvert.cpp and 7zMain.c
24   incorrectly converted surrogate characters (the code >= 0x10000) to UTF-8.
25- Some bugs were fixed
26
27
289.06           2009-08-17
29-------------------------
30- Some changes in ANSI-C 7z Decoder interfaces.
31
32
339.04           2009-05-30
34-------------------------
35- LZMA2 compression method support
36- xz format support
37
38
394.65           2009-02-03
40-------------------------
41- Some minor fixes
42
43
444.63           2008-12-31
45-------------------------
46- Some minor fixes
47
48
494.61 beta      2008-11-23
50-------------------------
51- The bug in ANSI-C LZMA Decoder was fixed:
52    If encoded stream was corrupted, decoder could access memory 
53    outside of allocated range.
54- Some changes in ANSI-C 7z Decoder interfaces.
55- LZMA SDK is placed in the public domain.
56
57
584.60 beta      2008-08-19
59-------------------------
60- Some minor fixes.
61
62
634.59 beta      2008-08-13
64-------------------------
65- The bug was fixed:
66    LZMA Encoder in fast compression mode could access memory outside of 
67    allocated range in some rare cases.
68
69
704.58 beta      2008-05-05
71-------------------------
72- ANSI-C LZMA Decoder was rewritten for speed optimizations.
73- ANSI-C LZMA Encoder was included to LZMA SDK.
74- C++ LZMA code now is just wrapper over ANSI-C code.
75
76
774.57           2007-12-12
78-------------------------
79- Speed optimizations in �++ LZMA Decoder. 
80- Small changes for more compatibility with some C/C++ compilers.
81
82
834.49 beta      2007-07-05
84-------------------------
85- .7z ANSI-C Decoder:
86     - now it supports BCJ and BCJ2 filters
87     - now it supports files larger than 4 GB.
88     - now it supports "Last Write Time" field for files.
89- C++ code for .7z archives compressing/decompressing from 7-zip 
90  was included to LZMA SDK.
91  
92
934.43           2006-06-04
94-------------------------
95- Small changes for more compatibility with some C/C++ compilers.
96  
97
984.42           2006-05-15
99-------------------------
100- Small changes in .h files in ANSI-C version.
101  
102
1034.39 beta      2006-04-14
104-------------------------
105- The bug in versions 4.33b:4.38b was fixed:
106  C++ version of LZMA encoder could not correctly compress 
107  files larger than 2 GB with HC4 match finder (-mfhc4).
108  
109
1104.37 beta      2005-04-06
111-------------------------
112- Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 
113
114
1154.35 beta      2005-03-02
116-------------------------
117- The bug was fixed in C++ version of LZMA Decoder:
118    If encoded stream was corrupted, decoder could access memory 
119    outside of allocated range.
120
121
1224.34 beta      2006-02-27
123-------------------------
124- Compressing speed and memory requirements for compressing were increased
125- LZMA now can use only these match finders: HC4, BT2, BT3, BT4
126
127
1284.32           2005-12-09
129-------------------------
130- Java version of LZMA SDK was included
131
132
1334.30           2005-11-20
134-------------------------
135- Compression ratio was improved in -a2 mode
136- Speed optimizations for compressing in -a2 mode
137- -fb switch now supports values up to 273
138- The bug in 7z_C (7zIn.c) was fixed:
139  It used Alloc/Free functions from different memory pools.
140  So if program used two memory pools, it worked incorrectly.
141- 7z_C: .7z format supporting was improved
142- LZMA# SDK (C#.NET version) was included
143
144
1454.27 (Updated) 2005-09-21
146-------------------------
147- Some GUIDs/interfaces in C++ were changed.
148 IStream.h:
149   ISequentialInStream::Read now works as old ReadPart
150   ISequentialOutStream::Write now works as old WritePart
151
152
1534.27           2005-08-07
154-------------------------
155- The bug in LzmaDecodeSize.c was fixed:
156   if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
157   decompressing worked incorrectly.
158
159
1604.26           2005-08-05
161-------------------------
162- Fixes in 7z_C code and LzmaTest.c:
163  previous versions could work incorrectly,
164  if malloc(0) returns 0
165
166
1674.23           2005-06-29
168-------------------------
169- Small fixes in C++ code
170
171
1724.22           2005-06-10
173-------------------------
174- Small fixes
175
176
1774.21           2005-06-08
178-------------------------
179- Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
180- New additional version of ANSI-C LZMA Decoder with zlib-like interface:
181    - LzmaStateDecode.h
182    - LzmaStateDecode.c
183    - LzmaStateTest.c
184- ANSI-C LZMA Decoder now can decompress files larger than 4 GB
185
186
1874.17           2005-04-18
188-------------------------
189- New example for RAM->RAM compressing/decompressing: 
190  LZMA + BCJ (filter for x86 code):
191    - LzmaRam.h
192    - LzmaRam.cpp
193    - LzmaRamDecode.h
194    - LzmaRamDecode.c
195    - -f86 switch for lzma.exe
196
197
1984.16           2005-03-29
199-------------------------
200- The bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder): 
201   If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
202   decoder could access memory outside of allocated range.
203- Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
204  Old version of LZMA Decoder now is in file LzmaDecodeSize.c. 
205  LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
206- Small speed optimization in LZMA C++ code
207- filter for SPARC's code was added
208- Simplified version of .7z ANSI-C Decoder was included
209
210
2114.06           2004-09-05
212-------------------------
213- The bug in v4.05 was fixed:
214    LZMA-Encoder didn't release output stream in some cases.
215
216
2174.05           2004-08-25
218-------------------------
219- Source code of filters for x86, IA-64, ARM, ARM-Thumb 
220  and PowerPC code was included to SDK
221- Some internal minor changes
222
223
2244.04           2004-07-28
225-------------------------
226- More compatibility with some C++ compilers
227
228
2294.03           2004-06-18
230-------------------------
231- "Benchmark" command was added. It measures compressing 
232  and decompressing speed and shows rating values. 
233  Also it checks hardware errors.
234
235
2364.02           2004-06-10
237-------------------------
238- C++ LZMA Encoder/Decoder code now is more portable
239  and it can be compiled by GCC on Linux.
240
241
2424.01           2004-02-15
243-------------------------
244- Some detection of data corruption was enabled.
245    LzmaDecode.c / RangeDecoderReadByte
246    .....
247    {
248      rd->ExtraBytes = 1;
249      return 0xFF;
250    }
251
252
2534.00           2004-02-13
254-------------------------
255- Original version of LZMA SDK
256
257
258
259HISTORY of the LZMA
260-------------------
261  2001-2008:  Improvements to LZMA compressing/decompressing code, 
262              keeping compatibility with original LZMA format
263  1996-2001:  Development of LZMA compression format
264
265  Some milestones:
266
267  2001-08-30: LZMA compression was added to 7-Zip
268  1999-01-02: First version of 7-Zip was released
269  
270
271End of document
272