QPress/QuickLZ

QPress is a demo archiving program which serves as a proof-of-concept for the QuickLZ library by Lasse Reinhold. The compressor is geared toward speed rather than compression ratio, much like GZip but even faster.

NanoZip 0.07 alpha/Win64 - (C) 2008-2009 Sami Runsas - www.nanozip.net
 *** THIS IS AN EARLY ALPHA VERSION OF NANOZIP *** USE ONLY FOR TESTING ***
usage: nz.exe <command> -<switch 1> -<switch N> <archive_file> <files...>
e.g. nz.exe a -cO -m1.2g backup document1.txt document2.txt
 
 commands:
  a       add files to archive
  l       list contents of archive
  q       quick check archive for damage
  t       test archive (full decompression)
  x       extract files from archive
  w32c    create self-extracting archive (windows 32-bit console)
  info    information about host system
  help    show advanced help
  unix    show unix specific options
 switches:
  -                stop scanning switches
  r                recurse subdirectories
  c<n,f,F,d,       compressor: none, nz_lzpf, nz_lzpf_large, nz_lzhd,
    D,o,O,c>       nz_lzhds, nz_optimum1 (default), nz_optimum2, nz_cm
  s<n,e,a,s>       sort files before compression: no sorting,
                   by extension (default), by name, by size
  h<n,c,C,f>       checksum: none, crc16, crc32, fletcher16 (default)
  m<0...n>[k,m,g]  memory usage (approximate)
  nt               do not store timestamps
  np               do not store permissions
  nm               do not store metadata or redundancy (equals -nt -np -hn)
  sp               strip paths from files
  o<path>          output path
  y                yes to all queries
  v                verbose
  x<file>          exclude file(s)
QPress/QuickLZ
Command 32-bit 64-bit Difference
Average 3.619%
qpress -L1 8.580 9.843 14.720%
qpress -L2 14.476 14.664 1.299%
qpress -L3 40.201 38.126 -5.162%

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§4991 · March 6, 2010 · Tags: , , ·

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