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1 | package Catalyst::DispatchType::Regex; |
2 | |
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3 | use Class::C3; |
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4 | use Moose; |
5 | extends 'Catalyst::DispatchType::Path'; |
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6 | |
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7 | use Text::SimpleTable; |
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8 | use Text::Balanced (); |
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9 | |
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10 | has _compiled => ( |
11 | is => 'rw', |
12 | isa => 'ArrayRef', |
13 | required => 1, |
14 | default => sub{ [] }, |
15 | ); |
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16 | |
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17 | no Moose; |
18 | |
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19 | =head1 NAME |
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20 | |
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21 | Catalyst::DispatchType::Regex - Regex DispatchType |
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22 | |
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23 | =head1 SYNOPSIS |
24 | |
25 | See L<Catalyst>. |
26 | |
27 | =head1 DESCRIPTION |
28 | |
29 | =head1 METHODS |
30 | |
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31 | =head2 $self->list($c) |
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32 | |
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33 | Output a table of all regex actions, and their private equivalent. |
34 | |
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35 | =cut |
36 | |
37 | sub list { |
38 | my ( $self, $c ) = @_; |
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39 | my $re = Text::SimpleTable->new( [ 35, 'Regex' ], [ 36, 'Private' ] ); |
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40 | for my $regex ( @{ $self->_compiled } ) { |
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41 | my $action = $regex->{action}; |
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42 | $re->row( $regex->{path}, "/$action" ); |
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43 | } |
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44 | $c->log->debug( "Loaded Regex actions:\n" . $re->draw . "\n" ) |
45 | if ( @{ $self->_compiled } ); |
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46 | } |
47 | |
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48 | =head2 $self->match( $c, $path ) |
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49 | |
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50 | Checks path against every compiled regex, and offers the action for any regex |
51 | which matches a chance to match the request. If it succeeds, sets action, |
52 | match and captures on $c->req and returns 1. If not, returns 0 without |
53 | altering $c. |
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54 | |
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55 | =cut |
56 | |
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57 | sub match { |
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58 | my ( $self, $c, $path ) = @_; |
59 | |
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60 | return if $self->SUPER::match( $c, $path ); |
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61 | |
62 | # Check path against plain text first |
63 | |
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64 | foreach my $compiled ( @{ $self->_compiled } ) { |
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65 | if ( my @captures = ( $path =~ $compiled->{re} ) ) { |
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66 | next unless $compiled->{action}->match($c); |
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67 | $c->req->action( $compiled->{path} ); |
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68 | $c->req->match($path); |
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69 | $c->req->captures( \@captures ); |
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70 | $c->action( $compiled->{action} ); |
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71 | $c->namespace( $compiled->{action}->namespace ); |
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72 | return 1; |
73 | } |
74 | } |
75 | |
76 | return 0; |
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77 | } |
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78 | |
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79 | =head2 $self->register( $c, $action ) |
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80 | |
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81 | Registers one or more regex actions for an action object. |
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82 | Also registers them as literal paths. |
83 | |
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84 | Returns 1 if any regexps were registered. |
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85 | |
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86 | =cut |
87 | |
88 | sub register { |
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89 | my ( $self, $c, $action ) = @_; |
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90 | my $attrs = $action->attributes; |
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91 | my @register = @{ $attrs->{'Regex'} || [] }; |
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92 | |
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93 | foreach my $r (@register) { |
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94 | $self->register_path( $c, $r, $action ); |
95 | $self->register_regex( $c, $r, $action ); |
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96 | } |
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97 | |
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98 | return 1 if @register; |
99 | return 0; |
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100 | } |
101 | |
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102 | =head2 $self->register_regex($c, $re, $action) |
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103 | |
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104 | Register an individual regex on the action. Usually called from the |
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105 | register method. |
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106 | |
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107 | =cut |
108 | |
109 | sub register_regex { |
110 | my ( $self, $c, $re, $action ) = @_; |
111 | push( |
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112 | @{ $self->_compiled }, # and compiled regex for us |
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113 | { |
114 | re => qr#$re#, |
115 | action => $action, |
116 | path => $re, |
117 | } |
118 | ); |
119 | } |
120 | |
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121 | =head2 $self->uri_for_action($action, $captures) |
122 | |
123 | returns a URI for this action if it can find a regex attributes that contains |
124 | the correct number of () captures. Note that this may function incorrectly |
125 | in the case of nested captures - if your regex does (...(..))..(..) you'll |
126 | need to pass the first and third captures only. |
127 | |
128 | =cut |
129 | |
130 | sub uri_for_action { |
131 | my ( $self, $action, $captures ) = @_; |
132 | |
133 | if (my $regexes = $action->attributes->{Regex}) { |
134 | REGEX: foreach my $orig (@$regexes) { |
135 | my $re = "$orig"; |
136 | $re =~ s/^\^//; |
137 | $re =~ s/\$$//; |
138 | my $final = '/'; |
139 | my @captures = @$captures; |
140 | while (my ($front, $rest) = split(/\(/, $re, 2)) { |
141 | ($rest, $re) = |
142 | Text::Balanced::extract_bracketed("(${rest}", '('); |
143 | next REGEX unless @captures; |
144 | $final .= $front.shift(@captures); |
145 | } |
146 | next REGEX if @captures; |
147 | return $final; |
148 | } |
149 | } |
150 | return undef; |
151 | } |
152 | |
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153 | =head1 AUTHOR |
154 | |
155 | Matt S Trout |
156 | Sebastian Riedel, C<sri@cpan.org> |
157 | |
158 | =head1 COPYRIGHT |
159 | |
160 | This program is free software, you can redistribute it and/or modify it under |
161 | the same terms as Perl itself. |
162 | |
163 | =cut |
164 | |
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165 | __PACKAGE__->meta->make_immutable; |
166 | |
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167 | 1; |