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Moved C4/Charset.pm to C4/Interface/CGI/Output.pm

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acli 2003-02-02 07:19:29 +00:00
parent 52a5fd4bbd
commit e9858a2910
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C4/Charset.pm
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package C4::Charset;
# $Id$
#package to work around problems in HTTP headers
# Note: This is just a utility module; it should not be instantiated.
# Copyright 2003 Katipo Communications
#
# This file is part of Koha.
#
# Koha is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# Koha is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
# A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA 02111-1307 USA
use strict;
require Exporter;
use vars qw($VERSION @ISA @EXPORT);
# set the version for version checking
$VERSION = 0.01;
=head1 NAME
C4::Charset - Functions for handling charsets in HTML pages
=head1 SYNOPSIS
use C4::Charset;
print $query->header(-type => C4::Charset::gettype($output)), $output;
=head1 DESCRIPTION
The functions in this module peek into a piece of HTML and return strings
related to the (guessed) charset.
=head1 FUNCTIONS
=over 2
=cut
@ISA = qw(Exporter);
@EXPORT = qw(
&guesscharset
&guesstype
);
=pod
&guesscharset($output)
"Guesses" the charset from the some HTML that would be output.
C<$output> is the HTML page to be output. If it contains a META tag
with a Content-Type, the tag will be scanned for a language code.
This code is returned if it is found; undef is returned otherwise.
This function only does sloppy guessing; it will be confused by
unexpected things like SGML comments. What it basically does is to
grab something that looks like a META tag and scan it.
=cut
sub guesscharset ($) {
my($html) = @_;
my $charset = undef;
local($`, $&, $', $1, $2, $3);
# FIXME... These regular expressions will miss a lot of valid tags!
if ($html =~ /<meta\s+http-equiv=(["']?)Content-Type\1\s+content=(["'])text\/html\s*;\s*charset=([^\2\s\r\n]+)\2\s*(?:\/?)>/is) {
$charset = $3;
} elsif ($html =~ /<meta\s+content=(["'])text\/html\s*;\s*charset=([^\1\s\r\n]+)\1\s+http-equiv=(["']?)Content-Type\3\s*(?:\/?)>/is) {
$charset = $2;
}
return $charset;
} # guess
sub guesstype ($) {
my($html) = @_;
my $charset = guesscharset($html);
return defined $charset? "text/html; charset=$charset": "text/html";
}
#---------------------------------
END { } # module clean-up code here (global destructor)
1;
__END__
=back
=head1 AUTHOR
Koha Developement team <info@koha.org>
=cut