File Coverage

blib/lib/HTTP/Response/Encoding.pm

Criterion	Covered	Total	%
statement	21	26	80.7
branch	7	12	58.3
condition	0	2	0.0
subroutine	5	6	83.3
pod	1	3	33.3
total	34	49	69.3

package HTTP::Response::Encoding;
use warnings;
use strict;
our $VERSION = sprintf "%d.%02d", q$Revision: 0.6 $ =~ /(\d+)/g;

sub HTTP::Response::charset {
    my $self = shift;
    return $self->{__charset} if exists $self->{__charset};
    if ($self->can('content_charset')){
	# To suppress:
	# Parsing of undecoded UTF-8 will give garbage when decoding entities
	local $SIG{__WARN__} = sub {};
	my $charset = $self->content_charset;
	$self->{__charset} = $charset;
	return $charset;
    }

    my $content_type = $self->headers->header('Content-Type');
    return unless $content_type;
    $content_type =~ /charset=([A-Za-z0-9_\-]+)/io;
    $self->{__charset} = $1 || undef;
}

sub HTTP::Response::encoder {
    require Encode;
    my $self = shift;
    return $self->{__encoder} if exists $self->{__encoder};
    my $charset = $self->charset or return;
    my $enc = Encode::find_encoding($charset);
    $self->{__encoder} = $enc;
}

sub HTTP::Response::encoding {
    my $enc = shift->encoder or return;
    $enc->name;
}

=head1 NAME

HTTP::Response::Encoding - Adds encoding() to HTTP::Response

=head1 VERSION

$Id: Encoding.pm,v 0.6 2009/07/28 21:25:25 dankogai Exp dankogai $

=cut

=head1 SYNOPSIS

  use LWP::UserAgent;
  use HTTP::Response::Encoding;

  my $ua = LWP::UserAgent->new();
  my $res = $ua->get("http://www.example.com/");
  warn $res->encoding;

=head1 EXPORT

Nothing.

=head1 METHODS

This module adds the following methods to  L objects.

=over 2

=item C<< $res->charset >>

Tells the charset I in the C header.
Note that the presence of the charset does not guarantee if the
response content is decodable via Encode.

To normalize this, you should try

  $res->encoder->mime_name; # with Encode 2.21 or above

or

  use I18N::Charset;
  # ...
  mime_charset_name($res->encoding);

=item C<< $res->encoder >>

Returns the corresponding encoder object or undef if it can't.

=item C<< $res->encoding >>

Tells the content encoding in the canonical name in L.
Returns undef if it can't.

For most cases, you are more likely to successfully find encoding
after GET than HEAD.  HTTP::Response is smart enough to parse



But you need the content to let HTTP::Response parse it.
If you don't want to retrieve the whole content but interested in its
encoding, try something like below;

  my $req =  HTTP::Request->new(GET => $uri);
  $req->headers->header(Range => "bytes=0-4095"); # just 1st 4k
  my $res = $ua->request($req);
  warn $res->encoding;

=item C<< $res->decoded_content >>

Discontinued since HTTP::Message already has this method.

See L for details.

=back

=head1 INSTALLATION

To install this module, run the following commands:

    perl Makefile.PL
    make
    make test
    make install

=head1 AUTHOR

Dan Kogai, C<<  >>

=head1 BUGS

Please report any bugs or feature requests to
C, or through the web interface at
L.
I will be notified, and then you'll automatically be notified of progress on
your bug as I make changes.

=head1 SUPPORT

You can find documentation for this module with the perldoc command.

    perldoc HTTP::Response::Encoding

You can also look for information at:

=over 4

=item * AnnoCPAN: Annotated CPAN documentation

L

=item * CPAN Ratings

L

=item * RT: CPAN's request tracker

L

=item * Search CPAN

L

=back

=head1 ACKNOWLEDGEMENTS

GAAS for L.

MIYAGAWA for suggestions.

=head1 COPYRIGHT & LICENSE

Copyright 2007 Dan Kogai, all rights reserved.

This program is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.

=cut

1; # End of HTTP::Response::Encoding