Re: [Lzip-bug] Feature request / support !

[Antonio Diaz Diaz]

Hi Daniel,

Daniel Baumann wrote:
> > Decompression is faster than compression
>
> true; however, i regularly decompress rather large files (>50GB) for
> which it would be nice to have a progress bar. for the moment i'm
> cat'ing them through pv.

Interesting. I didn't know.

Implementing a progress indicator for decompression (similar to the one 
already existing for compression) would not be difficult. The problem is 
that the --verbose option is already overloaded[1], and that I would 
like to make the progress indicator compatible with the information 
currently displayed by --verbose. I think a new option would be needed 
to enable the progress indicator.

Do you have any suggestions about what option name to use and how to 
achieve the goal above (maybe writing the progress info directly to the 
controlling terminal to avoid mangling stderr)? Thanks.

[1] http://www.nongnu.org/lzip/manual/lzip_manual.html#Invoking-lzip
-v
--verbose
    Verbose mode.
    When compressing, show the compression ratio for each file 
processed. A second '-v' shows the progress of compression.
    When decompressing or testing, further -v's (up to 4) increase the 
verbosity level, showing status, compression ratio, dictionary size, 
trailer contents (CRC, data size, member size), and up to 6 bytes of 
trailing data (if any) both in hexadecimal and as a string of printable 
ASCII characters.


Best regards,
Antonio.