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Answer: LWP::Simple, a bug in head() function?

by ender (Novice)
on Mar 24, 2000 at 00:32 UTC ( #5994=categorized answer: print w/replies, xml ) Need Help??

Q&A > HTTP and FTP clients > LWP::Simple, a bug in head() function? - Answer contributed by ender

Hrm, here's the code for the LWP::Simple::head() sub:
sub head ($) { my($url) = @_; _init_ua() unless $ua; my $request = HTTP::Request->new(HEAD => $url); my $response = $ua->request($request); if ($response->is_success) { return $response unless wantarray; return (scalar $response->header('Content-Type'), scalar $response->header('Content-Length'), HTTP::Date::str2time($response->header('Last-Modified' +)), HTTP::Date::str2time($response->header('Expires')), scalar $response->header('Server'), ); } return; }

So it looks like it tries to return an array, but what happens if it doesn't get a modified time, or any other element for that matter? It seems to return whatever it gets w/o putting any placeholders in:

[jane]:~/cat #!/usr/bin/perl use strict; use LWP::Simple; my @array = head(shift); my $i = 0; foreach my $line (@array) { print "$i: $line\n"; $i++; } [jane]:~/perl 0: text/html 1: 2: Apache/1.3.11 (Unix) PHP/3.0.14 [jane]:~/

So, it looks as though it's not really behaving how we would wish it to. Perhaps it should return a hash? Am I totally off-base there?

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