icfb nograph replay, and exit code

Hi there,

I have one question about executin from other script:
icfb -nograph -replay my_script.il
Is it possible to get an exit code other then 0(zero) if in
my_script.il is a syntax error , or some other "programming" problem?

In a few words:
- I have a perl script whchi creates on the fly my_script.pl
- I exec my_script.il from that perl script using system("icfb -
nograph -replay my_script.il")
No the problem:
I may have some situations where I get ERROR, but script is running
and in the end the exit code is 0.
E.g., I may have:
- syntax error
- nil involved in arithmetic expressions: "nil + <a_number>"
- access some prop of a nil/unbound var: "nil->some_property"

Is it possible that in case of such errors the script to stop the
execution and to exit with a code different than 0 ?


Thank you,
Marcel

 

Marcel Preda wrote, on 04/23/10 08:42:

Hi Marcel,

I tend to use:

icfb -nograph -restore script.il

rather than -replay. However, it should work nevertheless.

If you explicitly call:

exit()

it will exit with exit status 0. If you do:

exit(2)

it will exit with exit status 2.

Regards,

Andrew.

 

Instead of replaying my_script.il, replay a script that contains:

unless(errsetstring("load(\"my_script.il\")") exit(2))
exit()

(for example).

-Pete Zakel
()

How good is life, the mere living!
How fit to employ all the heart
and the soul and the senses
forever in joy

- Browning

 

Hi Andrew,

I'm not sure if I was able to explain what I want to do....

Let's suppose that I have next piece of code:
;;;;;;;;;;;;;;;;
;; File test.il
let( (foo)
println("I'm here 1!")
println(foo + 4) ;; foo is nil
println("I'm here 2!")
exit(0)
)
;;;;;;;;;;;;;

If I run "icfb -nograph -replay test.il"
Script is printing "I'm here 1";
Because skill wants to do "plus(nil 4)" it rise an error message:
;;;;;;;;;;;;;;;
*Error* plus: can't handle (nil + 4)
*Error* load: error while loading file - "/.../test.il"
;;;;;;;;;;;;;
But the exit code is 0.
I want if is possible something different that 0.


I've try also "icfb -nograph -restore test.il".
What I've noticed in this case: the script print "I'm here 1!".
It's printing the error message,
and after that it shows me the skill/icfb prompt and it's waiting for
skill commands.
I did not know until now how is working -restore switch.

Anyway in the end looks like I've found the solution, with your
help
Based on idea that if the script has an error the icfb interpreter
will wait for some input, why not to send it from the shell ?!
I just call from my script: "echo 'exit(111)' | icfb -nograph -restore
test.il"
In this way if everything is fine I have 0 as exit code,
if something went wrong I have 111 as exit code.
Already tested on IC5.1.41
It seems to work.

Anyway I'm still searching for a more elegant solution.


BR,
Marcel

 

Hi Pete,


It looks to be what I want.

Thank you very much,
Marcel