2024-01-20 Antonio Diaz Diaz * Version 1.24 released. * New options '--empty-error', '--marking-error', '--clear-marking'. * dump_remove.cc, main.cc: Accept 'empty' in --dump, --remove, --strip. * main.cc: Rename '--repair' to '--byte-repair'. Rename '--debug-repair' to '--debug-byte-repair'. Reformat file diagnostics as 'PROGRAM: FILE: MESSAGE'. (show_option_error): New function showing argument and option name. (main): Make -o preserve date/mode/owner if 1 input file. (open_outstream): Create missing intermediate directories. * lzip.h: Rename verify_* to check_*. * repair.cc: Rename to byte_repair.cc. * unzcrash.cc: Rename '--no-verify' to '--no-check'. * configure, Makefile.in: New variable 'MAKEINFO'. * Makefile.in: Remove target 'install-as-lzip'; -e needs a real lzip. * testsuite: New test files test_3m.txt.lz.md5, fox6_mark.lz. 2022-01-21 Antonio Diaz Diaz * Version 1.23 released. * Decompression time has been reduced by 5-12% depending on the file. * main_common.cc (getnum): Show option name and valid range if error. * dump_remove.cc (dump_members): Check tty except for --dump=tdata. * Option '-U, --unzcrash' now takes an argument ('1' or 'B'). * mtester.cc (duplicate_buffer): Use an external buffer. * repair.cc (debug_decompress): Continue decoding on CRC mismatch. * unzcrash.cc: Make zcmp_command a string of unlimited size. Use execvp instead of popen to avoid invoking /bin/sh. Print byte or block position in messages. * New file common.h. * Improve several descriptions in manual, '--help', and man page. * lziprecover.texi: Change GNU Texinfo category to 'Compression'. (Reported by Alfred M. Szmidt). 2021-01-02 Antonio Diaz Diaz * Version 1.22 released. * New options '-e, --reproduce', '--lzip-level', '--lzip-name', '--reference-file', and '-E, --debug-reproduce'. * Remove '--dump-tdata', '--remove-tdata', and '--strip-tdata'. * main.cc (main): Report an error if a file name is empty. Make '-o' behave like '-c', but writing to file. Make '-c' and '-o' check whether the output is a terminal only once. Do not open output if input is a terminal. * main.cc (decompress): With '-i', ignore data errors, keep files. * range_dec.cc: '-i -D' now decompresses a truncated last member. * '-i -D' now returns 0 if only ignored errors are found. * '-i' now considers any block > 36 with header a member, not a gap. * Replace 'decompressed', 'compressed' with 'out', 'in' in output. * Fix several compiler warnings. (Reported by Nissanka Gooneratne). * lzip_index.cc: Improve messages for corruption in last header. * New debug options '-M, --md5sum' and '-U, --unzcrash'. * main.cc: Set a valid invocation_name even if argc == 0. * Document extraction from tar.lz in manual, '--help', and man page. * New files lunzcrash.cc, md5.h, md5.cc, nrep_stats.cc, reproduce.cc. * lziprecover.texi: New chapter 'Reproducing one sector'. New sections 'Merging with a backup' and 'Reproducing a mailbox'. Document the debug options for experts. * check.sh: Lzip 1.16 or newer is required to run the tests. * testsuite: Add 9 new test files. 2019-01-04 Antonio Diaz Diaz * Version 1.21 released. * Rename File_* to Lzip_*. * New options '--dump', '--remove', and '--strip'. They replace '--dump-tdata', '--remove-tdata', and '--strip-tdata', which are now aliases and will be removed in version 1.22. * lzip.h (Lzip_trailer): New function 'verify_consistency'. * lzip_index.cc: Lzip_index now detects gaps between members, some kinds of corrupt trailers and some fake trailers embedded in trailing data. * split.cc: Use Lzip_index to split members, gaps and trailing data. * split.cc: Check last member before writing anything. * list.cc (list_files): With '-i', ignore format errors, show gaps. * range_dec.cc: With '-i', ignore a truncated last member. * main.cc (main): Check return value of close( infd ). * Improve and add new diagnostic messages. * Print '\n' instead of '\r' if !isatty( 1 ) in merge, repair. * main.cc: Compile on DOS with DJGPP. * lziprecover.texi: New chapter 'Tarlz'. * configure: Accept appending to CXXFLAGS; 'CXXFLAGS+=OPTIONS'. * INSTALL: Document use of CXXFLAGS+='-D __USE_MINGW_ANSI_STDIO'. * testsuite: New test files fox.lz, fox6_sc[1-6].lz. 2018-02-12 Antonio Diaz Diaz * Version 1.20 released. * split.cc: Fix splitting of files > 64 KiB broken since 1.16. * New options '--dump-tdata', '--remove-tdata', '--strip-tdata', and '--loose-trailing'. * Improve corrupt header detection to HD=3. * main.cc: Show corrupt or truncated header in multimember file. * Replace 'bits/byte' with inverse compression ratio in output. * Show progress of decompression at verbosity level 2 (-vv). * Show progress of decompression only if stderr is a terminal. * main.cc: Show final diagnostic when testing multiple files. * decoder.cc (verify_trailer): Show stored sizes also in hex. Show dictionary size at verbosity level 4 (-vvvv). 2017-04-10 Antonio Diaz Diaz * Version 1.19 released. * merge.cc: Fix members with thousands of scattered errors. * Option '-a' now works with '-l' and '-D'. * The output of option '-l, --list' has been simplified. * main.cc: Continue testing if any input file is a terminal. * main.cc: Show trailing data in both hexadecimal and ASCII. * lzip_index.cc: Improve detection of bad dict and trailing data. * lzip_index.cc: Skip trailing data more efficiently. * lzip.h: Unify messages for bad magic, trailing data, etc. * New struct Bad_byte allows delta and flip modes for bad_value. * unzcrash.cc: New option '-e, --set-byte'. 2016-05-12 Antonio Diaz Diaz * Version 1.18 released. * New option '-a, --trailing-error'. * merge.cc (open_input_files): Use CRC to test identical files. * repair.cc (repair_file): Detect gross damage before repairing. * repair.cc: Repair a damaged dictionary size in the header. * repair.cc: Try bytes at offsets 7 to 11 first. * Decompression time has been reduced by 2%. * main.cc (decompress): Print up to 6 bytes of trailing data when '-tvvvv' is specified. * decoder.cc (verify_trailer): Remove 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. * Use 'close_and_set_permissions' and 'set_signals' in all modes. * range_dec.cc (list_file): Show dictionary size and size of trailing data (if any) with '-lv'. * New options '-A, --alone-to-lz', '-W, --debug-decompress', and '-X, --show-packets'. * Change short name of option '--debug-delay' to '-Y'. * Change short name of option '--debug-repair' to '-Z'. * unzcrash.cc: New options '-B, --block', '-d, --delta', '-t, --truncate', and '-z, --zcmp'. * unzcrash.cc: Read files as large as RAM allows. * unzcrash.cc: Compare output using zcmp if decompressor returns 0. * unzcrash.cc: Accept negative position and size. * lziprecover.texi: New chapter 'Trailing data'. * configure: Avoid warning on some shells when testing for g++. * Makefile.in: Detect the existence of install-info. * check.sh: Don't check error messages. * check.sh: A POSIX shell is required to run the tests. 2015-05-28 Antonio Diaz Diaz * Version 1.17 released. * New block selection algorithm makes merge up to 100 times faster. * repair.cc: Repair time has been reduced by 15%. * New options '-y, --debug-delay' and '-z, --debug-repair'. * Makefile.in: New targets 'install*-compress'. * testsuite/unzcrash.cc: Move to top directory. * lziprecover.texi: New chapter 'File names'. 2014-08-29 Antonio Diaz Diaz * Version 1.16 released. * New class LZ_mtester makes repair up to 10 times faster. * main.cc (close_and_set_permissions): Behave like 'cp -p'. * lziprecover.texinfo: Rename to lziprecover.texi. * Change license to GPL version 2 or later. 2013-09-14 Antonio Diaz Diaz * Version 1.15 released. * repair.cc: Repair multimember files with up to one byte error per member. * merge.cc: Merge multimember files. * main.cc (show_header): Don't show header version. * lziprecover.texinfo: New chapters 'Repairing files', 'Merging files', and 'Unzcrash'. 2013-05-31 Antonio Diaz Diaz * Version 1.14 released. * New option '-i, --ignore-errors'. * Option '-l, --list' now accepts more than one file. * Decompression time has been reduced by 12%. * split.cc: Use as few digits as possible in file names. * split.cc: In verbose mode show names of files being created. * main.cc (show_header): Show header version if verbosity >= 4. * configure: Options now accept a separate argument. * Makefile.in: New targets 'install-as-lzip' and 'install-bin'. * main.cc: Use 'setmode' instead of '_setmode' on Windows and OS/2. 2012-02-24 Antonio Diaz Diaz * Version 1.13 released. * Lziprecover is now distributed in its own package. Until version 1.12 it was included in the lzip package. Previous entries in this file are taken from there. * lziprecover.cc: Rename to main.cc. * New files merge.cc, repair.cc, split.cc, and range_dec.cc. * main.cc: Add decompressor options (-c, -d, -k, -t) so that an external decompressor is not needed for recovery nor for "make check". * New option '-D, --range-decompress', which extracts a range of bytes decompressing only the members containing the desired data. * New option '-l, --list', which prints correct total file sizes even for multimember files. * merge.cc, repair.cc: Remove output file if recovery fails. * Change quote characters in messages as advised by GNU Standards. * split.cc: Use Boyer-Moore algorithm to search for headers. * configure: Rename 'datadir' to 'datarootdir'. 2011-04-30 Antonio Diaz Diaz * Version 1.12 released. * lziprecover.cc: If '-v' is not specified show errors only. * unzcrash.cc: Use Arg_parser. * unzcrash.cc: New options '-b, --bits', '-p, --position', and '-s, --size'. 2010-09-16 Antonio Diaz Diaz * Version 1.11 released. * lziprecover.cc: New option '-m, --merge', which tries to produce a correct file by merging the good parts of two or more damaged copies. * lziprecover.cc: 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: New options '-f, --force' and '-o, --output'. * lziprecover.cc: 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. 2009-06-22 Antonio Diaz Diaz * Version 1.6 released. * lziprecover.1: New man page. * check.sh: Test lziprecover. 2009-01-24 Antonio Diaz Diaz * Version 1.4 released. * Add 'lziprecover', a member recoverer program. * unzcrash.cc: Test all 1-byte errors. Copyright (C) 2009-2024 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.