Re: Re: untar with plzip faster than with lzip for no apparent reason

[Sonia Diaz Pacheco]

wrotycz escribió:

AFAIK, dictionary size is fixed for each compressed file and can't be changed because it has to be the same dictionary size that was used in the compression.

I am not talking about dictionary but about output buffer.

In a lzip decompressor, dictionary and output buffer are the same thing. If you find the lzip source a bit complicated, you can check it in the lzip specification[1]. The dictionary buffer is allocated in the constructor of 'class LZ_decoder' like this 

  buffer( new uint8_t[dictionary_size] ),

and is the only buffer used by the decompressor.

[1] http://datatracker.ietf.org/doc/draft-diaz-lzip/ 

Cheers,

Sonia