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Re: How to Extract Nested IF/THEN elements

by I0 (Priest)
on Jun 21, 2002 at 07:34 UTC ( #176244=note: print w/ replies, xml ) Need Help??


in reply to How to Extract Nested IF/THEN elements

$_ = " IF(A) anytext IF(B) anytext ENDIF IF(C) anytext ENDIF and on .... ENDIF "; @( = ('(',''); @) = (')',''); ($re=$_)=~s/((\bIF\b)|(\bENDIF\b)|.)/$([!$2]\Q$1\E$)[!$3]/gs; print join"\n\n",eval{/$re/},""; warn $@ if $@=~/unmatched/;


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