[Gretl-devel] Re: invalid compressed data

Am 02.10.19 um 02:48 schrieb Allin Cottrell: > On Tue, 1 Oct 2019, Artur Tarassow wrote: > > > I am currently working with a 2.8GB csv data file which I stored as a gdtb > > file (compressed to about 170MB). However, trying to open the gdtb file > > yields an error (see attached screenshot) with the message that the data > > is not compressed in a valid manner. Smaller gdtb files work fine though. > > There are two code paths for zipping/unzipping in gretl (other than just > straight gzip compression or extraction of a single file, which is handled > by the zlib API). > > 1) The gretlzip plugin module, which is based on the code for the Info-ZIP > executable "zip" (Mark Adler et al), version 2.31. This is now somewhat > dated. > > 2) Libgsf-1 (gsf = gnome structured file, used as back-end for gnumeric). > > I suspect that 1) may be subject to a 4GB limit but 2) is not. > > In years past we considered use of libgsf as experimental, and you had to > specifically request it in a gretl build by passing --with-gsf to the > configure script. I guess it's time to change that. Now (current git) if > libgsf >= 1.14.31 is found when configuring, it will be used by preference. > (Of course, you'd need the "dev" or "devel" libgsf package.) Thanks for the information, Allin.