Copy/delete parameters from command stream!

[janise]

Hello AWK Gurus,
The command stream is stored in a file and looks like this:
-CT LATM -CS -CD DEMO -CA RACK -CAP TOGGLE -RP GLS7002 -I 372 -R test -CO USER -OT 6 -OP /src/test/log/TI09887 2 -OF 2 -DE "This is a test message"

I need to identify the paramater after -I, -CO and -DE flags and put them in vaiables, e.g. in this case:
$VAR1 = 372
$VAR2 = USER
$VAR3 = This is a test message

Also, I need to edit the command by deleting this bit and putting it to another file:
-DE &quot;This is a test message&quot; <- Remove this part

Thanks for your help!
Janise

 

[marsd]

You can do it statically, pretty simply, if you can always anticipate the length of the variable to be cut from the
command string.

Say:
awk '
/-DE/ { array[&quot;DE&quot;] = match($0,/-DE/) }
/-I/ { array[&quot;I&quot;] = match($0,/-I/) }
/-CO/ { array[&quot;CO&quot;] = match($0,/-CO/) }
{
for (all in array) {
if (all == &quot;CO&quot {
printf &quot;var1=%s\n&quot;,substr($0,array[all] + 4,4)
}
if (all == &quot;I&quot {
printf &quot;var2=%s\n&quot;,substr($0,array[all] + 3,3)
}
if (all == &quot;DE&quot {
printf &quot;var3=%s\n&quot;,substr($0,array[all] + 4,25)
printf substr($0,array[all] + 4,25) > &quot;out.txt&quot;
}
}
}'

Output looks like:
echo $mess | mess.awk
var1=USER
var3=&quot;This is a test message&quot;
var2=372

To introduce the variables:
1.a=`echo $mess | mess.awk`
2.echo $a
var1=USER var3=&quot;This is a test message&quot; var2=372
3.eval $a
4. echo $var1
USER

Otherwise if you have to worry about a different variable length to be cut from the string each time it is more problematic.
I'm sure someone else will have a better solution.

 

[olded]

Hi:

Marsd's awk solution is good, probably better than this:

For years, I used the shift; var; shift; technique to parse command line arguments. I've never really come up with a good solution for handling:

-DE &quot;this is atest file&quot;

The following Korn Shell sub kinda/sorta works:

Regards,


Ed

#!/bin/ksh

# return true if a quote is in the string
# else false
function is_quote {
x=$(echo $1|awk ' { if($0 ~ /[\&quot;]/ )
print 1
else
print 0 } ')
echo $x
}

# get the command line arguments from data file setting
# command line arguments
set - `cat data.file`

#
while [ &quot;$#&quot; -gt 0 ]
do # set the command line arguments
case $1 in
# -I
-I) shift
VAR1=$1
shift
;;
# -CO
-CO) shift
VAR2=$1
shift
;;
-DE) shift
VAR3=$1
ctr=$(is_quote $VAR3)
if [[ $ctr -eq 1 ]]
then # loop until you find terminating quote
ctr=0
until [ &quot;$ctr&quot; -eq 1 ]
do
shift
ctr=$(is_quote $1)
if [[ $ctr -eq 0 ]]
then
VAR3=$VAR3&quot; &quot;$1
fi
done
VAR3=$VAR3&quot;\&quot;&quot;
fi
shift
;;
*) shift # ignore the unneeded options
;;
esac
done
if ! [ -z &quot;$VAR1&quot; ]
then # echo if set
echo $VAR1
fi
if ! [ -z &quot;$VAR2&quot; ]
then # echo if set
echo $VAR2
fi

if ! [ -z &quot;$VAR3&quot; ]
then # echo if set
echo $VAR3
fi