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Help with splitting a string..

 
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# 1  
Old 03-12-2010
Help with splitting a string..
Hello I need help with the following. I have strings like
Code:
#if defined(__def1__)
#if defined(__def1__) || defined(__def2__)
#if defined(__def1__) && defined(__def2__) && defined(__def3__).
#if defined(__def1__) || defined(__def2__) || defined(__def3__).

I need to print what is there in between () like def1 etc.
Whats the best way to accomplish this.

thanks
srk
Last edited by Scott; 03-12-2010 at 07:10 PM.. Reason: Please use code tags
# 2  
Old 03-12-2010
Code:
echo '#if defined(__def1__) || defined(__def2__) || defined(__def3__).' | nawk -F'[()]' '{for(i=2;i<NF;i+=2) print $i}'

assuming no nested parens, e.g. '((foo))'
# 3  
Old 03-12-2010
Thanks vgersh99. Its working.
-Srk
# 4  
Old 03-15-2010
I'm sure someone will find a failing case, but..

Code:
grep -oE '\(__\w+[^(_]__\)' |tr '(),'_'' ' '

# 5  
Old 03-15-2010
Try this in sed,

Code:
sed -r 's/[^(]*\(([^)]+)\)[^(|)]*/\1\n/g'  <input_file>

 
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