Surrounding a chunk of code by #ifdef and #endif - Shell Programming and Scripting

xxxaxa · #1 (**permalink**) 05-09-2007

Hello the great gurus

I'm quite new to this, so perhaps I'm asking a simple and trivial question (which is good, because you'll answer for sure

)))

Anyway. I have an amount of *.c files (about 100), and what I want to do, is to surround a specific function call with #ifdef and #endif.

Example:

Code:

MyFunc(a,b,c);

Should be

Code:

#ifdef JUST_DONT
MyFunc(a,b,c);
#endif

Now how do I do that?

Thank you very very much.

anbu23 · #2 (**permalink**) 05-09-2007

Code:

perl -i -ne ' if ( /MyFunc\(a,b,c\);/ ) { print "#ifdef JUST_DONT\n$_#endif\n" ; } else { print; } ' file

xxxaxa · #3 (**permalink**) 05-09-2007

MMmmm, thanks!!! I'll try to make this work for me

anbu23 · #4 (**permalink**) 05-09-2007

Code:

perl -i -ne ' if ( /^MyFunc\(.*\);$/ ) { print "#ifdef JUST_DONT\n$_#endif\n" ; } else { print; } ' file

ghostdog74 · #5 (**permalink**) 05-09-2007

Code:

awk '/^MyFunc/{
		print "#ifdef JUST_DONT"
		print
		print "#endif"} 
     !/^MyFunc/
' file

xxxaxa · #6 (**permalink**) 05-09-2007

I'm sorry, one last question... I want to put the #endif thing one line after this function. I.E.

Code:

status = MyFunc(a, b, c);
CheckResults(status);

|
V

Code:

#ifdef JUST_DONT
status = MyFunc(a, b, c);
CheckResults(status);
#endif

How do I "insert" this extra newline into the search string? (I'm terribly sorry for my dumb questions, but I really didn't succeed to use the online help

)

aigles · #7 (**permalink**) 05-09-2007

From ghostdog74's solution :

Code:

awk '/^MyFunc/{
		print "#ifdef JUST_DONT"
		print
		getline
		print
		print "#endif"
		next
} 
1
' file

Jean-Pierre.

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