topic Re: how to call a function defined in other script in Operating System - HP-UX

how to call a function defined in other script

diwakar_4 — Thu, 20 Nov 2008 07:03:33 GMT

Hi All,

I have script1.scr. I am calling datetime function which is defined in script2.scr and trying to get return value:

cat script1.scr
./script2.scr
echo " Please call datetime function "

dd=datetime("2008-11-13")
echo " date is $dd "
********************************************

cat script2.scr

givedate()
{
echo " welcome to date time fun "
val=$1
dd=`echo "$val" | cut -f3 -d'-'`
return $dd
}
*******************************************

When i call function datetime from script1.scr it gives error that can not find function.

Can some one assists what is correct way to call function get return value?

Thanks

Re: how to call a function defined in other script

OFC_EDM — Thu, 20 Nov 2008 07:13:56 GMT

Put ". ./script2.scr" in script2.scr

This will source the functions defined in script2.scr.

You should then be able to used the functions defined in script2.scr within script1.scr

Regards

Re: how to call a function defined in other script

Fredrik.eriksson — Thu, 20 Nov 2008 08:07:00 GMT

Just to make it abit clearer.

#!/bin/sh
. ./script2.scr

dd=$(givedate 2008-11-13)
echo "Date us $dd"

Best regards
Fredrik Eriksson

Re: how to call a function defined in other script

Dennis Handly — Thu, 20 Nov 2008 08:30:15 GMT

>Can someone assist what is correct way to call function get return value?

Either you source it as KU suggests. You need to have ". ./script2.scr".

Or you don't use call functions, you execute the whole other script.

Or if you want to have functions in a file with the same name, you can use FPATH to point to a directory that contains the functions.

Re: how to call a function defined in other script

OFC_EDM — Thu, 20 Nov 2008 08:42:21 GMT

Typo

My post should have read

Put ". ./script2.scr" in script1.scr

Cheers

Re: how to call a function defined in other script

diwakar_4 — Thu, 20 Nov 2008 09:19:13 GMT

Hi All,

Many thanks, it is working after importing the path.
Now i am facing probelm in term of returning the code.
I am now passing lone date_time string as argument.
************************************
cat script1.scr
./script2.scr
echo " Please call datetime function "

dd=datetime("2008-09-12:20300000")
echo " date is $dd "

In script2.scr i want to return

cat script2.scr

givedate()
{
echo " welcome to date time fun "
val=$1
--"after formating the val"
dd=$date$Month$$Year_$hour$Min$Sec
return $dd
}

Here dd conatins value like "12012008183000". When i am returning this i am not getting full sting.
I think it is not able to handle such long value. Can we do someting?

Thanks

Re: how to call a function defined in other script

Suraj K Sankari — Thu, 20 Nov 2008 09:34:12 GMT

Hi,

Functions either use the syntax
function FUNCTION { COMMANDS; }
or
FUNCTION () { COMMANDS; }

See the example:

pathmunge () {
if ! echo $PATH | /bin/egrep â q "(^|:)$1($|:)" ; then
if [ "$2" = "after" ] ; then
PATH=$PATH:$1
else
PATH=$1:$PATH
fi
fi
}
# Path manipulation
if [ `id â u` = 0 ]; then
pathmunge /sbin
pathmunge /usr/sbin
pathmunge /usr/local/sbin
fi
pathmunge /usr/X11R6/bin after
unset pathmunge

Suraj

Re: how to call a function defined in other script

Fredrik.eriksson — Thu, 20 Nov 2008 09:38:33 GMT

Diwakar,

Since you're executing this within a variable (<3 that btw... DCL doesn't have that) you could just aswell use echo instead of return. In my experience this usually works better then using return.

Best regards
Fredrik Eriksson

Re: how to call a function defined in other script

Dennis Handly — Thu, 20 Nov 2008 09:42:50 GMT

>I think it is not able to handle such long value. Can we do something?

Functions can only return numbers 0..255.
Otherwise you would need to use echo:

In function:
echo "$val" | cut -f3 -d'-'

Caller:
dd=$(datetime "2008-11-13")

Re: how to call a function defined in other script

diwakar_4 — Thu, 20 Nov 2008 10:05:26 GMT

Fredrik/Dennis,

Thanks a ton,

Echo worked fro me, let me do some testing on different scenarios, let you know if required any help.