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package HTTP::Headers::ActionPack::MediaType;
BEGIN {
$HTTP::Headers::ActionPack::MediaType::AUTHORITY = 'cpan:STEVAN';
}
{
$HTTP::Headers::ActionPack::MediaType::VERSION = '0.09';
}
# ABSTRACT: A Media Type
use strict;
use warnings;
use Scalar::Util qw[ blessed ];
use parent 'HTTP::Headers::ActionPack::Core::BaseHeaderType';
sub type { (shift)->subject }
sub major { (split '/' => (shift)->type)[0] }
sub minor { (split '/' => (shift)->type)[1] }
sub matches_all {
my $self = shift;
$self->type eq '*/*' && $self->params_are_empty
? 1 : 0;
}
# must be exactly the same
sub equals {
my ($self, $other) = @_;
$other = (ref $self)->new_from_string( $other ) unless blessed $other;
$other->type eq $self->type && _compare_params( $self->params, $other->params )
? 1 : 0;
}
# types must be compatible and params much match exactly
sub exact_match {
my ($self, $other) = @_;
$other = (ref $self)->new_from_string( $other ) unless blessed $other;
$self->type_matches( $other ) && _compare_params( $self->params, $other->params )
? 1 : 0;
}
# types must be be compatible and params should align
sub match {
my ($self, $other) = @_;
$other = (ref $self)->new_from_string( $other ) unless blessed $other;
$self->type_matches( $other ) && $self->params_match( $other->params )
? 1 : 0;
}
## ...
sub type_matches {
my ($self, $other) = @_;
return 1 if $other->type eq '*' || $other->type eq '*/*' || $other->type eq $self->type;
$other->major eq $self->major && $other->minor eq '*'
? 1 : 0;
}
sub params_match {
my ($self, $other) = @_;
my $params = $self->params;
foreach my $k ( keys %$other ) {
next if $k eq 'q';
return 0 if not exists $params->{ $k };
return 0 if $params->{ $k } ne $other->{ $k };
}
return 1;
}
## ...
sub _compare_params {
my ($left, $right) = @_;
my @left_keys = sort grep { $_ ne 'q' } keys %$left;
my @right_keys = sort grep { $_ ne 'q' } keys %$right;
return 0 unless (scalar @left_keys) == (scalar @right_keys);
foreach my $i ( 0 .. $#left_keys ) {
return 0 unless $left_keys[$i] eq $right_keys[$i];
return 0 unless $left->{ $left_keys[$i] } eq $right->{ $right_keys[$i] };
}
return 1;
}
1;
__END__
=pod
=head1 NAME
HTTP::Headers::ActionPack::MediaType - A Media Type
=head1 VERSION
version 0.09
=head1 SYNOPSIS
use HTTP::Headers::ActionPack::MediaType;
# normal constructor
my $mt = HTTP::Headers::ActionPack::MediaType->new(
'application/xml' => (
'q' => 0.5,
'charset' => 'UTF-8'
)
);
# construct from string
my $mt = HTTP::Headers::ActionPack::MediaType->new_from_string(
'application/xml; q=0.5; charset=UTF-8'
);
=head1 DESCRIPTION
This is an object which represents an HTTP media type
definition. This is most often found as a member of a
L<HTTP::Headers::ActionPack::MediaTypeList> object.
=head1 METHODS
=over 4
=item C<type>
Accessor for the type.
=item C<major>
The major portion of the media type name.
=item C<minor>
The minor portion of the media type name.
=item C<matches_all>
A media type matched all if the type is C<*/*>
and if it has no parameters.
=item C<equals ( $media_type | $media_type_string )>
This will attempt to determine if the C<$media_type> is
exactly the same as itself. If given a C<$media_type_string>
it will parse it into an object.
In order for two type to be equal, the types must match
exactly and the parameters much match exactly.
=item C<exact_match ( $media_type | $media_type_string )>
This will attempt to determine if the C<$media_type> is
a match with itself using the C<type_matches> method below.
If given a C<$media_type_string> it will parse it into an
object.
In order for an exact match to occur it the types must
be compatible and the parameters much match exactly.
=item C<match ( $media_type | $media_type_string )>
This will attempt to determine if the C<$media_type> is
a match with itself using the C<type_matches> method and
C<params_match> method below. If given a C<$media_type_string>
it will parse it into an object.
In order for an exact match to occur it the types must
be compatible and the parameters must be a subset.
=item C<type_matches ( $media_type | $media_type_string )>
This will determine type compatibility, properly handling
the C<*> types and major and minor elements of the type.
=item C<params_match ( $parameters )>
This determines if the C<$parameters> are a subset of the
invocants parameters.
=back
=head1 AUTHOR
Stevan Little <stevan.little@iinteractive.com>
=head1 CONTRIBUTORS
=over 4
=item *
Andrew Nelson <anelson@cpan.org>
=item *
Dave Rolsky <autarch@urth.org>
=item *
Florian Ragwitz <rafl@debian.org>
=item *
Jesse Luehrs <doy@tozt.net>
=item *
Karen Etheridge <ether@cpan.org>
=back
=head1 COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Infinity Interactive, Inc..
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=cut
|
