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#!/usr/bin/perl
###############################################################################
#
# This file copyright (c) 2008 by Randy J. Ray, all rights reserved
#
# Copying and distribution are permitted under the terms of the Artistic
# License 2.0 (http://www.opensource.org/licenses/artistic-license-2.0.php) or
# the GNU LGPL (http://www.opensource.org/licenses/lgpl-license.php).
#
# $Id: imgsize 133 2008-02-18 06:34:47Z $
#
###############################################################################
#
# No-brainer to size an image supplied on the command-line. All the real
# work is done in Image::Size
#
=head1 NAME
imgsize - read the dimensions of an image in several popular formats
=head1 SYNOPSIS
imgsize [ -r | -a | -f fmt ] file
=head1 DESCRIPTION
No-brainer to size an image supplied on the command-line. All the real
work is done in L<Image::Size>
=head1 OPTIONS
By default, the width and height are returned as attributes for an IMG tag
in HTML, essentially "C<WIDTH=40 HEIGHT=30>". The following options may be
used to return alternate formats (all report width first, then height):
=over
=item C<-r>
Return "raw" format data. Just the numbers separated by a single space.
=item C<-a>
Return a Perl-style list of attributes suitable for passing to the C<img()>
method of the CGI module (see L<CGI>).
=item C<-f> B<fmt>
Pass the string specified in I<fmt> to C<sprintf> and thus use it to format
the results to your taste. C<sprintf> will be passed two numbers, so any
other formatting directives will be lost. The numbers are passed as width
first, then height.
=back
=head1 SEE ALSO
L<Image::Size>
=head1 AUTHOR
Randy J. Ray <rjray@blackperl.com>. Copyright (c) 2000. Distributable under
the Artistic License as packaged with Perl version 5.005 and later.
=cut
use strict;
use warnings;
use vars qw($opt_h $opt_r $opt_a $opt_f);
use Image::Size qw(:all);
use Getopt::Std;
my $rtn;
getopts('hraf:');
#
# Usage reporting: if -h, or no @ARGV, or more than one of the rest...
#
die sprintf("Usage: %s [ -r | -a | -f fmt ] file ...\n", ($0 =~ m|.*/(.*)|o))
if ($opt_h || (! @ARGV) || (($opt_a && $opt_r) || ($opt_a && $opt_f) ||
($opt_r && $opt_f)));
$rtn = \&html_imgsize;
$opt_a &&
($rtn = \&return_attr);
$opt_r &&
($rtn = \&return_imgsize);
$opt_f &&
($rtn = \&return_fmt);
if (@ARGV > 1)
{
foreach (@ARGV)
{
print STDOUT sprintf("$_: %s\n", &$rtn($_));
}
}
else
{
print STDOUT sprintf("%s\n", &$rtn($ARGV[0]));
}
exit;
#
# Note the doubled calls here. This is just a quick, semi-clean attempt at
# functionality. As it happens, the second call will be a cache hit within
# the Image::Size package.
#
sub return_attr
{
my ($width, $height, $err) = imgsize($_[0]);
(defined $width) ?
"(-width => $width, -height => $height)" : "error: $err";
}
sub return_imgsize
{
my ($width, $height, $err) = imgsize($_[0]);
(defined $width) ? "$width $height" : "error: $err";
}
sub return_fmt
{
my ($width, $height, $err) = imgsize($_[0]);
(defined $width) ? sprintf($opt_f, $width, $height, $err) : "error: $err";
}
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