[GRASS-dev] Re: updates to grass startup

[Maris Nartiss]

Hi,

my cleanup just fixed bugs 5328 and 5373. It also pariatly fixed 5372
and 5371 (My fault - too much bugs in one report).

Summarising up:

Currently there is no mechanism to catch error if creating of new
location has failed. Current code always will look like it has suceed
and will restart GRASS to strat use newly created location. Hamish
code will only make error message visible to user (good thing), but
GRASS should not continue as if everything was OK.

When creating new location from EPSG code, there is some error in
cleaning up temporary location in case of error. (See below)

Creating new location from georeferenced file still will not work, as
it needs some (temporary) location to run g.proj. Probably
make_location_epsg.sh.in could be used to create new, similar script
for georeferenced file too. Or probaby some new script, that creates
valid temporary location and then cleans up for any module, that may
need temporary location for running (do we need such script?).

To reproduce problems - 1) rm .grassrc6 (This why n00bs report
unreporoducable errors - daily grass users always have .grassrc6 with
valid locations/mapsets);
2) create new location with EPSG code 1234 - tmp location is left over;
3) repeat 1st step and now create new location from valid
georeferenced file - error.

Currently I'm not as good in coding to fix those problems :(

Just trying to make GRASS fool proof,
Maris.

2006/12/13, Hamish <hamish_nospam at yahoo.com>:
> when creating a new location from EPSG code an xterm flashes up and then
> disappears. This might have some important info/warning/error in it.
>
> I have prepared the following patch, but not applied it as it makes the
> script partially interactive. (ie it asks the user to press <enter> to
> continue, but times out in 2 minutes [enough time to find a pen and
> write down an error])
>
> So not a great solution, but here it is.
>
> Better? put a pause at end of exec grass-xterm-wrapper:
>
> lib/init/epsg_option.tcl.in:
>
> exec -- $env(GISBASE)/etc/grass-xterm-wrapper -e \
>          $env(GISBASE)/etc/make_location_epsg.sh \
>          $epsg_code $epsgLocation $locpath >@stdout 2>@stderr; \
>          read -t 120
>
> or somehow like that?
>
>
> Hamish
>
>