ARchive HANdler by GEorge Lyapko v1.40
This page contains my shareware MS-DOS archiver, which is
based on LGHA(though not compatible), but has compression
enhancements (multimedia, english texts, executables compression, etc.) and
LFN support.
Compression results are close to the world's best in all categories and are best for uncompressed 24-bit RGB TIFF images among universal archivers
(take a look at Jeff Gilchrist's ACT2 (Archive comparison test) or its russian version.
Comments and suggestions are appreciated.
Main changes since v1.35
Some test results
Download arhangel v1.40 (51kB)
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Main changes since 1.35:
| Version | Date of release | Changes |
|---|---|---|
| 1.40 final release(?) | 18-Jan-2000 | fixed rare bug: if you try to compress WIN32 DLL's using
more than 10000 contexts, it may lead to hanging
(thx. Jaime Tejedor Gomez for bug reporting) fixed very dangerous bug (since version 1.33): ARHANGEL abcde.lg *.txt (command not specified) under WIN32 leads to deletion of all *.txt files in current directory |
| 1.40a2 | 19-Nov-1999 | fixed bug: sometimes ARHANGEL wrongly determines method of compression (leads to worse compression ratio) |
| 1.40a1 | 27-Oct-1999 |
added better and faster english texts predictor changed arith.coder to slightly faster one |
| 1.39a8 | 18-Jun-1999 |
tuned some mm-files compression added better english texts predictor |
| 1.39a7 | 07-Jun-1999 |
fixed bug: SFX-files could not extract english texts fixed bug: some(rare) images could not be extracted fixed wrong image type determination (sometimes leads to worse compression ratios) added order-0 compression |
| 1.39a6 | 11-May-1999 |
switch -z[n] changed to -mz[n][f] added force text compression switch -mtf added DBIII files detection slightly tuned 24-bit image compression improved english texts compression optimal switch combination now is -mm -mt -mz! several bug fixes: extraction after -1 -z may not work sometimes -mm option usage leads to crash some files after -mt were not extracted correctly compression of file with 0 length leads to crash, etc. |
| 1.39a5 | 26-Apr-1999 | fixed invalid ELF-files detection tuned multimedia compression default |
| 1.39a4 | 22-Apr-1999 | added experimental -mt switch: try english texts predictor (methods 7 and 8). Must help on all english texts, program sources with english comments. |
| 1.39a3 | 19-Apr-1999 | fixed bug:freshen or update with move may cause loss of files |
| 1.39a2 | 19-Apr-1999 | modified -z switch: -z0 means not use RLE-predictor (overrides default settings) -z[n] means use RLE-predictor order n+2(by default n=1) for example, -z3 means to use RLE only if repeated string contains 5 or more characters. -z1 is used by default on HLP,XLS,DOC,MDB. Default context count in this case 16000 added Linux-executables(ELF) detection compression of greyscale BMP,TGA must be little better |
| 1.39a1 | 08-Apr-1999 |
added -z switch: use RLE-predictor (methods 5 and 6 in header) some Microsoft files (XLS,DOC,etc.) are compressed better: -z is used by default |
| 1.38 | 01-Mar-1999 | added new predictor for highly redundant 24-bit BMP's added -mm5 switch to force Intel executables compression fixed bug: recursion depth was limited only to 3 directories |
| 1.37 | 16-Feb-1999 | added new predictor for 16-bit stereo WAV's slightly improved sound compression |
| 1.36 | 10-Feb-1999 | fixed bug: DOS executables compressed with both methods were
sometimes larger than compressed with only one method specified fixed serious bug: some (rare?) WIN32 executables can't be extracted after compression if you don't specify method of compression directly, ARHANGEL now tries to determine best method on small part of file (not on whole file as previous versions do). Sometimes this may lead to wrong decision. If you want to do this like in previous versions, you MUST specify both methods in command line: ARHANGEL a -1 -2 ... |