GRASS library exits.
grassp-list at amber.cecer.army.mil
Mon, 30 Mar 1992 10:48:16 -0700
I an developing a graphical user-interface which uses GRASS to
manipulate maps from our study area, and I am getting kind of frustrated
with the number of unexpected exits I receive. My problem is that since
my program is meant to be as simple to use as possible, and to be completely
stand-alone (not run in GRASS shell) I would like to have grass just tell me
when it gets a fatal error, and not force my program to exit like a dog
brought up short on a leash -- my users simply won't understand what happened.
I could, of course, pull out the 20-odd calls to exit() in the
GRASS libraries, but I don't want to be non-standard. I want to be
able to update to a new GRASS version with ease.
Is there anybody else out there who has had this problem? The
worst exit is in G_gisinit, when a mapset is determined to be
non-writable (i.e. PERMANENT), so it exits. Since my program mainly
just displays maps, not modifies them, writability is not an issue here
and my program should just pop up a warning dialog and continue, not
fall on its nose.