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1756
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use strict; |
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111
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use warnings; |
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163
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3
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package WWW::xkcd; |
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# ABSTRACT: Synchronous and asynchronous interfaces to xkcd comics |
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$WWW::xkcd::VERSION = '0.007'; |
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use Carp; |
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5
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302
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7
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2253
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use JSON; |
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40076
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5
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16
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8
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2233
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use Try::Tiny; |
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3742
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5
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207
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9
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3179
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use HTTP::Tiny; |
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187525
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5
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3323
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10
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my $can_async = try { require AnyEvent; require AnyEvent::HTTP; 1 } |
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catch { 0 }; |
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14
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sub new { |
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5
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1
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572
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my $class = shift; |
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my %args = ( |
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baseurl => 'http://xkcd.com', |
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infopath => 'info.0.json', |
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@_, |
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); |
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return bless { %args }, $class; |
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} |
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sub fetch_metadata { |
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1
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10417
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my $self = shift; |
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29
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my $base = $self->{'baseurl'}; |
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my $path = $self->{'infopath'}; |
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29
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my ( $comic, $cb ) = $self->_parse_args(@_); |
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14
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100
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my $url = defined $comic ? "$base/$comic/$path" : "$base/$path"; |
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14
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100
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31
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if ($cb) { |
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# this is async |
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7
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100
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85
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croak 'AnyEvent and AnyEvent::HTTP are required for async mode' |
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unless $can_async; |
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38
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AnyEvent::HTTP::http_get( $url, sub { |
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6
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6
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254841
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my $body = shift; |
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6
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35
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my $meta = $self->_decode_json($body); |
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42
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6
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return $cb->($meta); |
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6
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22
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} ); |
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45
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6
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14895
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return 0; |
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} |
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48
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# this is sync |
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7
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47
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my $result = HTTP::Tiny->new->get($url); |
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51
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$result->{'success'} or croak "Can't fetch $url: " . |
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7
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100
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203500
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$result->{'reason'}; |
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54
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6
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43
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my $meta = $self->_decode_json( $result->{'content'} ); |
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56
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6
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43
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return $meta; |
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} |
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59
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sub fetch_random { |
60
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2
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2
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1
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1403
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my $self = shift; |
61
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2
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100
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9
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my $callback = shift if ref $_[0]; |
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63
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2
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100
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8
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if ($callback) { |
64
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$self->fetch_metadata( sub { |
65
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1
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1
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1
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my $metadata = shift; |
66
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1
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4
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my $random = int(rand($metadata->{num})) + 1; |
67
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1
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4
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return $self->fetch($random, $callback); |
68
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1
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7
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} ); |
69
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1
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2
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return 0; |
70
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} |
71
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72
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1
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3
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my $metadata = $self->fetch_metadata; |
73
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1
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56
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my $random = int(rand($metadata->{num})) + 1; |
74
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1
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6
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return $self->fetch($random); |
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} |
76
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77
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sub fetch { |
78
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7
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7
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1
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2376
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my $self = shift; |
79
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7
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48
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my $base = $self->{'baseurl'}; |
80
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7
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13
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my $path = $self->{'infopath'}; |
81
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7
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22
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my ( $comic, $cb ) = $self->_parse_args(@_); |
82
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83
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7
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100
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18
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if ($cb) { |
84
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$self->fetch_metadata( $comic, sub { |
85
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3
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3
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4
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my $meta = shift; |
86
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3
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6
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my $img = $meta->{'img'}; |
87
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88
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AnyEvent::HTTP::http_get( $img, sub { |
89
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3
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950301
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my $img_data = shift; |
90
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91
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# call original callback |
92
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3
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30
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return $cb->( $img_data, $meta ); |
93
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3
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18
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} ); |
94
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3
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16
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} ); |
95
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96
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3
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34
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return 0; |
97
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} |
98
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99
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4
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10
|
my $meta = $self->fetch_metadata($comic); |
100
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4
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469
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my $img = $meta->{'img'}; |
101
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4
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29
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my $result = HTTP::Tiny->new->get($img); |
102
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103
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$result->{'success'} or croak "Can't fetch $img: " . |
104
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4
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100
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394090
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$result->{'reason'}; |
105
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106
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3
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279
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return ( $result->{'content'}, $meta ); |
107
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} |
108
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109
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sub _parse_args { |
110
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21
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21
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23
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my $self = shift; |
111
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21
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31
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my @args = @_; |
112
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21
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19
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my ( $comic, $cb ); |
113
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114
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# @_ = $num, $cb |
115
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# @_ = $num |
116
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# @_ = $cb |
117
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21
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100
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73
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if ( @_ == 2 ) { |
|
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100
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118
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7
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8
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( $comic, $cb ) = @_; |
119
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} elsif ( @_ == 1 ) { |
120
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11
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100
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25
|
if ( ref $_[0] ) { |
121
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3
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4
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$cb = $_[0]; |
122
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} else { |
123
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8
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10
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$comic = $_[0]; |
124
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} |
125
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} |
126
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127
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21
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39
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return ( $comic, $cb ); |
128
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} |
129
|
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130
|
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sub _decode_json { |
131
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14
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14
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955
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my $self = shift; |
132
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14
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48
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my $json = shift; |
133
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14
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14
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731
|
my $data = try { decode_json $json } |
134
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14
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1
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155
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catch { croak "Can't decode '$json': $_" }; |
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1
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130
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135
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136
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13
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176
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return $data; |
137
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} |
138
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139
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1; |
140
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141
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__END__ |