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Re: simple search problem (but not for me!!)

by PrakashK (Pilgrim)
on Oct 11, 2002 at 17:22 UTC ( #204591=note: print w/replies, xml ) Need Help??

in reply to simple search problem (but not for me!!)

You are reading the file into @prep, but are not really searching @prep for the pattern.

$tag =~ m/<!--..? -->/;
This line searches for the pattern in the variable $tag, which may or may not have been defined (considering it is a global, not a lexically scoped, variable). Consider the following instead:
$page = join "", @prep; # since the lines are in an array if (my ($tag) = $page =~ m/<!--(.+) -->/) { # call the appropriate sub based on the tag if ($tag eq 'a') { suba; exit; } elsif ($tag eq 'b') { subb; exit; } # ...etc... }
I have not attempted above to change your algorithm or data structure, although I would use a hash containing references to the subroutines, like:
my $subs = { a => \&suba, b => \&subb, # etc. } if ($subs->{$tag}) { $subs->{$tag}->(); } else { warn "Unknown tag <$tag> in file <$prepage>\n"; }

Also, I would not read the whole file at once, but instead:

my $tag; while (<PAGE>) { if (m/<!--(.+) -->/) { $tag = $1; last; # assuming there is only one tag in each file } } close <PAGE>; # proceed to call the tag handler

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