[GRASS5] winGRASS: mingw32 and execl (g.list)

[Roger Bivand]

On Thu, 19 Jan 2006, Markus Neteler wrote:

> On Thu, Jan 19, 2006 at 04:41:50PM +0100, Markus Neteler wrote:
> > Hi,
> > 
> > I was able to make further changes for winGRASS native (thanks to
> > instructions of Radim how to compile all the needed libs).
> > Now all modules except for display related libs/modules
> > are compilable.
> > 
> > Some quick tests in 'commmand.com' with r.mapcalc, r.slope.aspect,
> > v.voronoi were successful. I kept the data in a network directory
> > so that I was able to display the new maps via Linux. In future
> > QGIS 0.8 or other software will take care of the display
> > (or someone ports also the display stuff).
> > 
> > Now a question: While 'g.list' compiled, it just does not display
> > anything and exits. May execl() be the problem?
> > general/manage/cmd/list.c
> > 
> > Or do we have to implement some .../path/... vs ...\path\...
> > tricks there?
> 
> an addition:
> If so, could we automatically change / to \ in G_system()
> to resolve such cases using G_str_replace():
> 
> general/manage/lib/do_copy.c
> ...
>             sprintf (command, "%s/etc/copy '%s' '", G_gisbase(), path);
>             G__file_name (path, list[n].element[i], new, G_mapset());
>             strcat (command, path);
>             strcat (command, "'");
>             system (command);
> ...
> 
> ?

Markus,

Since the other commands work, the handling of path and file names may not 
be the problem. All recent Windows systems respect / as a path separator, 
as far as I know - try dir "somedir/somedir" to see - if it isn't quoted, 
some Windows programs and command.com shell commands try to interpret it 
as an argument. It's much more likely to be execl(), I feel.

Roger

> 
> Markus
> 
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-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no