tCHANGES - plan9port - [fork] Plan 9 from user space
(HTM) git clone git://src.adamsgaard.dk/plan9port
(DIR) Log
(DIR) Files
(DIR) Refs
(DIR) README
(DIR) LICENSE
---
tCHANGES (6251B)
---
1
2
3 0.9.0
4 ~~~~~
5 First version.
6
7
8 0.9.0a
9 ~~~~~~
10 Removed 'ranlib' from Makefile, since most modern Unix-es
11 don't need it, or even know about it.
12
13
14 0.9.0b
15 ~~~~~~
16 Fixed a problem with error reporting in bzip2.c. This does not effect
17 the library in any way. Problem is: versions 0.9.0 and 0.9.0a (of the
18 program proper) compress and decompress correctly, but give misleading
19 error messages (internal panics) when an I/O error occurs, instead of
20 reporting the problem correctly. This shouldn't give any data loss
21 (as far as I can see), but is confusing.
22
23 Made the inline declarations disappear for non-GCC compilers.
24
25
26 0.9.0c
27 ~~~~~~
28 Fixed some problems in the library pertaining to some boundary cases.
29 This makes the library behave more correctly in those situations. The
30 fixes apply only to features (calls and parameters) not used by
31 bzip2.c, so the non-fixedness of them in previous versions has no
32 effect on reliability of bzip2.c.
33
34 In bzlib.c:
35 * made zero-length BZ_FLUSH work correctly in bzCompress().
36 * fixed bzWrite/bzRead to ignore zero-length requests.
37 * fixed bzread to correctly handle read requests after EOF.
38 * wrong parameter order in call to bzDecompressInit in
39 bzBuffToBuffDecompress. Fixed.
40
41 In compress.c:
42 * changed setting of nGroups in sendMTFValues() so as to
43 do a bit better on small files. This _does_ effect
44 bzip2.c.
45
46
47 0.9.5a
48 ~~~~~~
49 Major change: add a fallback sorting algorithm (blocksort.c)
50 to give reasonable behaviour even for very repetitive inputs.
51 Nuked --repetitive-best and --repetitive-fast since they are
52 no longer useful.
53
54 Minor changes: mostly a whole bunch of small changes/
55 bugfixes in the driver (bzip2.c). Changes pertaining to the
56 user interface are:
57
58 allow decompression of symlink'd files to stdout
59 decompress/test files even without .bz2 extension
60 give more accurate error messages for I/O errors
61 when compressing/decompressing to stdout, don't catch control-C
62 read flags from BZIP2 and BZIP environment variables
63 decline to break hard links to a file unless forced with -f
64 allow -c flag even with no filenames
65 preserve file ownerships as far as possible
66 make -s -1 give the expected block size (100k)
67 add a flag -q --quiet to suppress nonessential warnings
68 stop decoding flags after --, so files beginning in - can be handled
69 resolved inconsistent naming: bzcat or bz2cat ?
70 bzip2 --help now returns 0
71
72 Programming-level changes are:
73
74 fixed syntax error in GET_LL4 for Borland C++ 5.02
75 let bzBuffToBuffDecompress return BZ_DATA_ERROR{_MAGIC}
76 fix overshoot of mode-string end in bzopen_or_bzdopen
77 wrapped bzlib.h in #ifdef __cplusplus ... extern "C" { ... }
78 close file handles under all error conditions
79 added minor mods so it compiles with DJGPP out of the box
80 fixed Makefile so it doesn't give problems with BSD make
81 fix uninitialised memory reads in dlltest.c
82
83 0.9.5b
84 ~~~~~~
85 Open stdin/stdout in binary mode for DJGPP.
86
87 0.9.5c
88 ~~~~~~
89 Changed BZ_N_OVERSHOOT to be ... + 2 instead of ... + 1. The + 1
90 version could cause the sorted order to be wrong in some extremely
91 obscure cases. Also changed setting of quadrant in blocksort.c.
92
93 0.9.5d
94 ~~~~~~
95 The only functional change is to make bzlibVersion() in the library
96 return the correct string. This has no effect whatsoever on the
97 functioning of the bzip2 program or library. Added a couple of casts
98 so the library compiles without warnings at level 3 in MS Visual
99 Studio 6.0. Included a Y2K statement in the file Y2K_INFO. All other
100 changes are minor documentation changes.
101
102 1.0
103 ~~~
104 Several minor bugfixes and enhancements:
105
106 * Large file support. The library uses 64-bit counters to
107 count the volume of data passing through it. bzip2.c
108 is now compiled with -D_FILE_OFFSET_BITS=64 to get large
109 file support from the C library. -v correctly prints out
110 file sizes greater than 4 gigabytes. All these changes have
111 been made without assuming a 64-bit platform or a C compiler
112 which supports 64-bit ints, so, except for the C library
113 aspect, they are fully portable.
114
115 * Decompression robustness. The library/program should be
116 robust to any corruption of compressed data, detecting and
117 handling _all_ corruption, instead of merely relying on
118 the CRCs. What this means is that the program should
119 never crash, given corrupted data, and the library should
120 always return BZ_DATA_ERROR.
121
122 * Fixed an obscure race-condition bug only ever observed on
123 Solaris, in which, if you were very unlucky and issued
124 control-C at exactly the wrong time, both input and output
125 files would be deleted.
126
127 * Don't run out of file handles on test/decompression when
128 large numbers of files have invalid magic numbers.
129
130 * Avoid library namespace pollution. Prefix all exported
131 symbols with BZ2_.
132
133 * Minor sorting enhancements from my DCC2000 paper.
134
135 * Advance the version number to 1.0, so as to counteract the
136 (false-in-this-case) impression some people have that programs
137 with version numbers less than 1.0 are in someway, experimental,
138 pre-release versions.
139
140 * Create an initial Makefile-libbz2_so to build a shared library.
141 Yes, I know I should really use libtool et al ...
142
143 * Make the program exit with 2 instead of 0 when decompression
144 fails due to a bad magic number (ie, an invalid bzip2 header).
145 Also exit with 1 (as the manual claims :-) whenever a diagnostic
146 message would have been printed AND the corresponding operation
147 is aborted, for example
148 bzip2: Output file xx already exists.
149 When a diagnostic message is printed but the operation is not
150 aborted, for example
151 bzip2: Can't guess original name for wurble -- using wurble.out
152 then the exit value 0 is returned, unless some other problem is
153 also detected.
154
155 I think it corresponds more closely to what the manual claims now.
156
157
158 1.0.1
159 ~~~~~
160 * Modified dlltest.c so it uses the new BZ2_ naming scheme.
161 * Modified makefile-msc to fix minor build probs on Win2k.
162 * Updated README.COMPILATION.PROBLEMS.
163
164 There are no functionality changes or bug fixes relative to version
165 1.0.0. This is just a documentation update + a fix for minor Win32
166 build problems. For almost everyone, upgrading from 1.0.0 to 1.0.1 is
167 utterly pointless. Don't bother.