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| # $Id: Size.pm,v 1.5 2004/09/08 01:36:02 comdog Exp $
package HTTP::Size;
use subs qw( get_size _request );
use vars qw(
$ERROR $HTTP_STATUS $VERSION
$INVALID_URL $COULD_NOT_FETCH $BAD_CONTENT_TYPE
);
use LWP::UserAgent;
use URI;
use HTTP::Request;
$VERSION = 0.91;
my $User_agent = LWP::UserAgent->new();
$INVALID_URL = -1;
$COULD_NOT_FETCH = -2;
$BAD_CONTENT_LENGTH = -3;
sub get_size
{
my $url = shift;
my $method = shift || 0;
_init();
unless( ref $url eq 'URI' )
{
$url = URI->new( $url );
}
unless( $url->scheme )
{
$ERROR = $INVALID_URL;
return;
};
my $response = '';
my $size = 0;
unless( $method )
{
my $request = HTTP::Request->new( HEAD => $url->as_string );
$response = _request( $request );
$HTTP_STATUS = $response->code;
$size = $response->content_length;
}
unless( not $method and $response->is_success and $size )
{
$request = HTTP::Request->new( GET => $url->as_string );
$response = _request( $request );
$HTTP_STATUS = $response->code;
$CONTENT = $response->content;
unless( $response->is_success )
{
$ERROR = $COULD_NOT_FETCH;
return;
}
elsif( not $response->content_length )
{
$size = length $CONTENT;
}
elsif( $response->content_length )
{
$size = $response->content_length;
}
}
$CONTENT_TYPE = lc $response->content_type;
return $size;
}
sub get_sizes
{
my $url = shift;
my $base = shift;
my %hash;
my $size = get_size( $url, 'GET' );
@{$hash{$url}}{ qw(size ERROR HTTP_STATUS) }
= ($size, $ERROR, $HTTP_STATUS);
unless( $size and $CONTENT_TYPE eq 'text/html' )
{
return wantarray ? ( $size, \%hash ) : $size;
}
require HTML::SimpleLinkExtor;
my $total = $size;
my $extor = HTML::SimpleLinkExtor->new( $url );
$extor->parse( $CONTENT );
foreach my $img ( $extor->img )
{
my $size = get_size( $img ) || 0;
@{$hash{$img}}{ qw(size ERROR HTTP_STATUS) }
= ( $size, $ERROR, $HTTP_STATUS );
$total += $size;
}
return wantarray ? ( $total, \%hash ) : $total;
}
sub _init
{
$ERROR = $CONTENT_TYPE = $CONTENT = $HTTP_STATUS = '';
}
sub _request
{
my $response = $User_agent->request( shift );
$HTTP_STATUS = $response->code;
return $response;
} |
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