Commit | Line | Data |
e623bdf2 |
1 | package Catalyst::TraitFor::Request::REST; |
2 | use Moose::Role; |
3 | use HTTP::Headers::Util qw(split_header_words); |
4 | use namespace::autoclean; |
5 | |
6 | has [qw/ data accept_only /] => ( is => 'rw' ); |
7 | |
8 | sub accepted_content_types { |
9 | my $self = shift; |
10 | |
11 | return $self->{content_types} if $self->{content_types}; |
12 | |
13 | my %types; |
14 | |
15 | # First, we use the content type in the HTTP Request. It wins all. |
16 | $types{ $self->content_type } = 3 |
17 | if $self->content_type; |
18 | |
19 | if ($self->method eq "GET" && $self->param('content-type')) { |
20 | $types{ $self->param('content-type') } = 2; |
21 | } |
22 | |
23 | # Third, we parse the Accept header, and see if the client |
24 | # takes a format we understand. |
25 | # |
26 | # This is taken from chansen's Apache2::UploadProgress. |
27 | if ( $self->header('Accept') ) { |
28 | $self->accept_only(1) unless keys %types; |
29 | |
30 | my $accept_header = $self->header('Accept'); |
31 | my $counter = 0; |
32 | |
33 | foreach my $pair ( split_header_words($accept_header) ) { |
34 | my ( $type, $qvalue ) = @{$pair}[ 0, 3 ]; |
35 | next if $types{$type}; |
36 | |
37 | # cope with invalid (missing required q parameter) header like: |
38 | # application/json; charset="utf-8" |
39 | # http://tools.ietf.org/html/rfc2616#section-14.1 |
40 | unless ( defined $pair->[2] && lc $pair->[2] eq 'q' ) { |
41 | $qvalue = undef; |
42 | } |
43 | |
44 | unless ( defined $qvalue ) { |
45 | $qvalue = 1 - ( ++$counter / 1000 ); |
46 | } |
47 | |
48 | $types{$type} = sprintf( '%.3f', $qvalue ); |
49 | } |
50 | } |
51 | |
52 | return $self->{content_types} = |
53 | [ sort { $types{$b} <=> $types{$a} } keys %types ]; |
54 | } |
55 | |
56 | sub preferred_content_type { $_[0]->accepted_content_types->[0] } |
57 | |
58 | sub accepts { |
59 | my $self = shift; |
60 | my $type = shift; |
61 | |
62 | return grep { $_ eq $type } @{ $self->accepted_content_types }; |
63 | } |
64 | |
65 | 1; |