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2019-01-03 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.21 released.
* File_* renamed to Lzip_*.
* lzip.h (Lzip_trailer): New function 'verify_consistency'.
* lzip_index.cc: Detect some kinds of corrupt trailers.
* main.cc (main): Check return value of close( infd ).
* main.cc: Compile on DOS with DJGPP.
* lzip.texi: Improved description of '-0..-9', '-m' and '-s'.
* configure: Accept appending to CXXFLAGS, 'CXXFLAGS+=OPTIONS'.
* INSTALL: Document use of CXXFLAGS+='-D __USE_MINGW_ANSI_STDIO'.
2018-02-11 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.20 released.
* Added new option '--loose-trailing'.
* Improved corrupt header detection to HD=3.
* main.cc: Show corrupt or truncated header in multimember file.
* main.cc (main): Option '-S, --volume-size' now keeps input files.
* encoder_base.*: Adjust dictionary size for each member.
* Replaced 'bits/byte' with inverse compression ratio in output.
* Show progress of decompression at verbosity level 2 (-vv).
* Show progress of (de)compression only if stderr is a terminal.
* main.cc: Show final diagnostic when testing multiple files.
* main.cc: Do not add a second .lz extension to the arg of -o.
* decoder.cc (verify_trailer): Show stored sizes also in hex.
Show dictionary size at verbosity level 4 (-vvvv).
* lzip.texi: Added chapter 'Output'.
2017-04-13 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.19 released.
* The option '-l, --list' has been ported from lziprecover.
* Don't allow mixing different operations (-d, -l or -t).
* Compression time of option '-0' has been slightly reduced.
* Decompression time has been reduced by 2%.
* main.cc: Continue testing if any input file is a terminal.
* main.cc: Show trailing data in both hexadecimal and ASCII.
* encoder.cc (Matchfinder_base): Verify size passed to new.
* lzip_index.cc: Improve detection of bad dict and trailing data.
* lzip.h: Unified messages for bad magic, trailing data, etc.
2016-05-14 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.18 released.
* Added new option '-a, --trailing-error'.
* Decompression time has been reduced by 2%.
* decoder.cc (verify_trailer): Removed test of final code.
* main.cc (main): Delete '--output' file if infd is a terminal.
* main.cc (main): Don't use stdin more than once.
* Removed decompression support for version 0 files.
* lzip.texi: Added chapter 'Trailing data'.
* configure: Avoid warning on some shells when testing for g++.
* Makefile.in: Detect the existence of install-info.
* check.sh: A POSIX shell is required to run the tests.
* check.sh: Don't check error messages.
2015-07-12 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.17 released.
* Reorganization of the compression code.
* lzip.texi: Added chapter 'Quality assurance'.
* Makefile.in: Added new targets 'install*-compress'.
2014-08-26 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.16 released.
* Compression ratio of option '-9' has been slightly increased.
* Compression time has been reduced by 4%.
* Compression time of option '-0' has been reduced by 2%.
* main.cc (close_and_set_permissions): Behave like 'cp -p'.
* Minor improvements.
* lzip.texinfo: Renamed to lzip.texi.
* License changed to GPL version 2 or later.
2013-09-20 Antonio Diaz Diaz <antonio@gnu.org>
* Version 1.15 released.
* Show progress of compression at verbosity level 2 (-vv).
* main.cc (show_header): Don't show header version.
* Ignore option '-n, --threads' for compatibility with plzip.
* configure: Options now accept a separate argument.
* lzip.texinfo: Added chapter 'Stream format' and appendix
'Reference source code'.
2013-02-17 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.14 released.
* Multi-step trials have been implemented.
* Compression ratio has been slightly increased.
* Compression time has been reduced by 5%.
* Decompression time has been reduced by 12%.
* Makefile.in: Added new target 'install-bin'.
* main.cc: Use 'setmode' instead of '_setmode' on Windows and OS/2.
* main.cc: Define 'strtoull' to 'std::strtoul' on Windows.
2012-02-24 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.13 released.
* Lziprecover has been moved to its own package.
* main.cc (close_and_set_permissions): Inability to change output
file attributes has been downgraded from error to warning.
* Compression time of option '-0' has been reduced by 2%.
* Reorganization of the compression code.
* Small change in '--help' output and man page.
* Changed quote characters in messages as advised by GNU Standards.
* configure: 'datadir' renamed to 'datarootdir'.
* 'unzcrash.cc' has been moved to package 'lziprecover'.
2011-04-30 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.12 released.
* Added new option '-F, --recompress'.
* encoder.h (update_prices): Update high length symbol prices
independently of the value of 'pos_state'. This gives better
compression for large values of '--match-length' without being
slower.
* encoder.h encoder.cc: Optimize pair price calculations. This
reduces compression time for large values of '--match-length'
by up to 6%.
* Compression time of option '-0' has been reduced by 2%.
* main.cc (decompress): Print only one status line for each
multimember file when only one '-v' is specified.
* main.cc (decompress): Print up to 6 bytes of trailing data
when '-vvvv' is specified.
* main.cc (open_instream): Don't show the message
" and '--stdout' was not specified" for directories, etc.
* lziprecover.cc: If '-v' is not specified show errors only.
* unzcrash.cc: Use Arg_parser.
* unzcrash.cc: Added new option '-b, --bits'.
* unzcrash.cc: Added new option '-p, --position'.
* unzcrash.cc: Added new option '-s, --size'.
2010-09-16 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.11 released.
* Added new option '-0' which produces a compression speed and ratio
comparable to those of 'gzip -9'.
* fast_encoder.h fast_encoder.cc: New files.
* main.cc: Match length limit set by options -1 to -8 has been
reduced to extend range of use towards gzip. Lower numbers now
compress less but faster. (-1 now takes 43% less time for only 20%
larger compressed size).
* Compression ratio of option '-9' has been slightly increased.
* lziprecover.cc: Added new option '-m, --merge' which tries to
produce a correct file merging the good parts of two or more
damaged copies.
* lziprecover.cc: Added new option '-R, --repair' for repairing a
1-byte error in single-member files.
* decoder.cc (decode_member): Detect file errors earlier to improve
efficiency of lziprecover's new repair capability.
This change also prevents (harmless) access to uninitialized
memory when decompressing a corrupt file.
* lziprecover.cc: Added new option '-f, --force'.
* lziprecover.cc: Added new option '-o, --output'.
* lziprecover.cc: Added new option '-s, --split' to select the until
now only operation of splitting multimember files.
* lziprecover.cc: If no operation is specified, warn the user and do
nothing.
* main.cc: Fixed warning about fchown's return value being ignored.
* decoder.cc: '-tvvvv' now also shows compression ratio.
* main.cc: Set stdin/stdout in binary mode on MSVC and OS2.
* lzip.texinfo: Added new examples.
* testsuite: 'test1' renamed to 'test.txt'. Added new tests.
* Matchfinder types HC4 (4 bytes hash-chain) and HT4 (4 bytes
hash-table) have been tested and found no better than the current
BT4.
2010-04-05 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.10 released.
* decoder.h: Input_buffer integrated in Range_decoder.
* main.cc: File specified with option '-o' is now created with mode
0666 if umask allows it, deleted if interrupted by user.
* main.cc: New constant 'o_binary'.
* main.cc: Dictionary size for options -2, -3, -4 and -8 has been
changed to improve linearity of compressed sizes.
* lzip.h: Fixed warnings produced by over-optimization (-O3).
* Makefile.in: Added quotes to directory names.
2010-01-17 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.9 released.
* main.cc (main): Return at least 1 if closing stdout fails.
* Makefile.in: Added '--name' option to help2man invocation.
* check.sh: Use 'test1' instead of 'COPYING' for testing.
2009-09-02 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.8 released.
* Compression time has been reduced by 4%.
* Lzdiff and lzgrep have been moved to the new package zutils.
* Fixed warnings on systems where uint32_t != unsigned int.
2009-06-25 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.7 released.
* decoder.h (copy_block): Fixed memcpy overlap introduced in 1.6.
2009-06-22 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.6 released.
* Decompression time has been reduced by 17%.
* Added decompression support for Sync Flush marker.
* Added support for .tbz extension to lzdiff and lzgrep.
* Added man pages for lzdiff, lzgrep and lziprecover.
* encoder.cc (Matchfinder): Reduce memory use to 9x if input file is
smaller than dictionary size limit.
* decoder.cc: Added extra flush calls to improve partial
decompression of corrupt files.
* '--test' no longer needs '/dev/null'.
* Removed some 'bashisms' from lzdiff and lzgrep.
* Dictionary size for options '-1' to '-4' has been changed.
* main.cc (signal_handler): Declared as 'extern "C"'.
* Makefile.in: Extra files are now installed by default.
* check.sh: Test lziprecover.
* Added 'export LC_ALL=C' to all scripts.
2009-04-12 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.5 released.
* lzip.h: Coded dictionary size implemented in Lzip_header.
* Fixed some includes that prevented compilation with GCC 4.4.
* 'member_size' and 'volume_size' are now accurate limits.
* Compression speed has been improved.
* Implemented bt4 type matchfinder.
* lzip.texinfo: Added chapter 'Algorithm'.
* Lzdiff and lzgrep now accept '-h' for '--help' and
'-V' for '--version'.
* Makefile.in: Man page is now installed by default.
* check.sh: Verify that files are opened in binary mode.
2009-01-24 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.4 released.
* Implemented compression of version 1 files.
* Added new option '-b, --member-size'.
* Added new option '-S, --volume-size'.
* Added new option '-o, --output'.
* main.cc: Read from non regular files if '--stdout' is specified.
* Added 'lziprecover', a member recoverer program.
* unzcrash.cc: Test all 1-byte errors.
2008-12-21 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.3 released.
* This version automatically chooses the smallest possible
dictionary size for each file during compression, saving memory
during decompression.
* Implemented decompression of version 1 files.
* check.sh: Replaced 'diff -q' with 'cmp'.
2008-12-10 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.2 released.
* encoder.cc: A 1-byte read outside allocated memory has been fixed.
* lzip.h: Dictionary size limit has been reduced to 512MiB because
setting it to 1GiB causes overflow of a 32 bit integer.
* Added 'lzdiff', a diff/cmp wrapper for gzip, bzip2, lzip and
non-compressed files.
* Added 'lzgrep', a grep wrapper for gzip, bzip2, lzip and
non-compressed files.
* 'make install-info' should now work on Debian and OS X.
2008-11-17 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.1 released.
* Changed short name of option '--dictionary-size' to '-s'.
* Changed short name of option '--match-length' to '-m'.
* Changed LONG_LONG_MAX to LLONG_MAX.
2008-10-14 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 1.0 released.
* '-tvv' shows file version and dictionary size.
2008-09-30 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 0.5 released.
* Decompression is now 1% faster.
2008-09-23 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 0.4 released.
* Code cleanup for global variable 'verbosity'.
* Regained the compression ratio of 0.2 with 5% faster speed.
* Fixed compilation on systems where size_t != unsigned int.
2008-09-15 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 0.3 released.
* encoder.cc: Compression is now 15% faster, 1% worse.
* main.cc (main): Make '-t' option override '-c'.
* main.cc (decompress): Show 'done' instead of 'ok' when not testing.
* encoder.h: Use trials[] to return the list of pairs.
2008-09-09 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 0.2 released.
* encoder.cc: Small improvements in compression speed.
* Small documentation changes.
2008-08-20 Antonio Diaz Diaz <ant_diaz@teleline.es>
* Version 0.1 released.
Copyright (C) 2008-2019 Antonio Diaz Diaz.
This file is a collection of facts, and thus it is not copyrightable, but
just in case, you have unlimited permission to copy, distribute and modify
it.
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