I feel pretty good with my regex foo but am running into a difficult one that I could use some help on.

I have a string that needs to be reformatted and it contains functions that can call functions. e.g. 

func2(func1(input1, input2), input3)

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But it does not matter which order they are called in. So, it could also be 

func1(input1, func2(input2, input3))

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So, my dilemma is that if I do a regex to find func1 and replace it then I am left with func2 to deal with. The order matters as to the matching of parens. I have not yet figured out how to get a matching () regex to work properly and have read all of the posts here already.

Here is my code to date: 

while (<>) {
    $line = $_;
    $line =~ s/func1\((.*?)\)/proc1{$1}/g;
    $line =~ s/func2\((.*?)\)/FUNC $1 END/g;
    $line =~ s/{/(/g;
    $line =~ s/}/)/g;
    print $line;
}

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The problem is that I get this when I run it I get this: 

proc1(input1, FUNC input2, input3) END
FUNC input1, proc1(input2, input3) END

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rather than 
proc1(input1, FUNC input2, input3 END)
FUNC input1, proc1(input2, input3) END

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Just in case it is not easy to tell the difference I am getting ") END" rather than "END)".

Any help or pointers on this?

In reply to Matching parens on a regex is beating me by bfdi533

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