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Re: How to Extract Nested IF/THEN elements

by I0 (Priest)
on Jun 21, 2002 at 07:34 UTC ( [id://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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