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68a748b9 |
1 | package Catalyst::Dispatcher; |
1abd6db7 |
2 | |
3 | use strict; |
4 | use base 'Class::Data::Inheritable'; |
a2f2cde9 |
5 | use Catalyst::Exception; |
f05af9ba |
6 | use Catalyst::Utils; |
1abd6db7 |
7 | use Text::ASCIITable; |
1abd6db7 |
8 | use Tree::Simple; |
9 | use Tree::Simple::Visitor::FindByPath; |
10 | |
11 | __PACKAGE__->mk_classdata($_) for qw/actions tree/; |
12 | |
1abd6db7 |
13 | =head1 NAME |
14 | |
9c053379 |
15 | Catalyst::Dispatcher - The Catalyst Dispatcher |
1abd6db7 |
16 | |
17 | =head1 SYNOPSIS |
18 | |
19 | See L<Catalyst>. |
20 | |
21 | =head1 DESCRIPTION |
22 | |
23 | =head1 METHODS |
24 | |
25 | =over 4 |
26 | |
6ef62eb2 |
27 | =item $c->detach($command) |
28 | |
29 | Like C<forward> but doesn't return. |
30 | |
31 | =cut |
32 | |
33 | sub detach { |
34 | my ( $c, $command ) = @_; |
35 | $c->forward($command) if $command; |
36 | die $Catalyst::Engine::DETACH; |
37 | } |
38 | |
1abd6db7 |
39 | =item $c->dispatch |
40 | |
41 | Dispatch request to actions. |
42 | |
43 | =cut |
44 | |
45 | sub dispatch { |
46 | my $c = shift; |
47 | my $action = $c->req->action; |
48 | my $namespace = ''; |
49 | $namespace = ( join( '/', @{ $c->req->args } ) || '/' ) |
50 | if $action eq 'default'; |
99fe1710 |
51 | |
1abd6db7 |
52 | unless ($namespace) { |
53 | if ( my $result = $c->get_action($action) ) { |
e494bd6b |
54 | $namespace = Catalyst::Utils::class2prefix( $result->[0]->[0]->[0], |
55 | $c->config->{case_sensitive} ); |
1abd6db7 |
56 | } |
57 | } |
99fe1710 |
58 | |
1abd6db7 |
59 | my $default = $action eq 'default' ? $namespace : undef; |
2d16b61a |
60 | my $results = $c->get_action( $action, $default, $default ? 1 : 0 ); |
1abd6db7 |
61 | $namespace ||= '/'; |
99fe1710 |
62 | |
1abd6db7 |
63 | if ( @{$results} ) { |
64 | |
65 | # Execute last begin |
66 | $c->state(1); |
2d16b61a |
67 | if ( my $begin = @{ $c->get_action( 'begin', $namespace, 1 ) }[-1] ) { |
1abd6db7 |
68 | $c->execute( @{ $begin->[0] } ); |
69 | return if scalar @{ $c->error }; |
70 | } |
71 | |
72 | # Execute the auto chain |
1196a46d |
73 | my $autorun = 0; |
9ddd9d05 |
74 | for my $auto ( @{ $c->get_action( 'auto', $namespace, 1 ) } ) { |
75 | $autorun++; |
1abd6db7 |
76 | $c->execute( @{ $auto->[0] } ); |
77 | return if scalar @{ $c->error }; |
78 | last unless $c->state; |
79 | } |
80 | |
81 | # Execute the action or last default |
e5f21aa2 |
82 | my $mkay = $autorun ? $c->state ? 1 : 0 : 1; |
61cfdd57 |
83 | if ( ( my $action = $c->req->action ) && $mkay ) { |
2d16b61a |
84 | if ( my $result = @{ $c->get_action( $action, $default, 1 ) }[-1] ) |
85 | { |
1abd6db7 |
86 | $c->execute( @{ $result->[0] } ); |
87 | } |
88 | } |
89 | |
90 | # Execute last end |
2d16b61a |
91 | if ( my $end = @{ $c->get_action( 'end', $namespace, 1 ) }[-1] ) { |
1abd6db7 |
92 | $c->execute( @{ $end->[0] } ); |
93 | return if scalar @{ $c->error }; |
94 | } |
95 | } |
99fe1710 |
96 | |
1abd6db7 |
97 | else { |
98 | my $path = $c->req->path; |
99 | my $error = $path |
100 | ? qq/Unknown resource "$path"/ |
101 | : "No default action defined"; |
102 | $c->log->error($error) if $c->debug; |
103 | $c->error($error); |
104 | } |
105 | } |
106 | |
e0fc6749 |
107 | =item $c->forward( $command [, \@arguments ] ) |
1abd6db7 |
108 | |
109 | Forward processing to a private action or a method from a class. |
110 | If you define a class without method it will default to process(). |
a1dad9c1 |
111 | also takes an optional arrayref containing arguments to be passed |
112 | to the new function. $c->req->args will be reset upon returning |
113 | from the function. |
1abd6db7 |
114 | |
115 | $c->forward('/foo'); |
116 | $c->forward('index'); |
117 | $c->forward(qw/MyApp::Model::CDBI::Foo do_stuff/); |
118 | $c->forward('MyApp::View::TT'); |
119 | |
120 | =cut |
121 | |
122 | sub forward { |
123 | my $c = shift; |
124 | my $command = shift; |
99fe1710 |
125 | |
1abd6db7 |
126 | unless ($command) { |
127 | $c->log->debug('Nothing to forward to') if $c->debug; |
128 | return 0; |
129 | } |
99fe1710 |
130 | |
1abd6db7 |
131 | my $caller = caller(0); |
132 | my $namespace = '/'; |
e0fc6749 |
133 | my $arguments = ( ref( $_[-1] ) eq 'ARRAY' ) ? pop(@_) : $c->req->args; |
99fe1710 |
134 | |
1abd6db7 |
135 | if ( $command =~ /^\// ) { |
db0ca23c |
136 | $command =~ /^\/(.*)\/(\w+)$/; |
1abd6db7 |
137 | $namespace = $1 || '/'; |
db0ca23c |
138 | $command = $2 || $command; |
139 | $command =~ s/^\///; |
1abd6db7 |
140 | } |
99fe1710 |
141 | |
e494bd6b |
142 | else { |
143 | $namespace = |
144 | Catalyst::Utils::class2prefix( $caller, $c->config->{case_sensitive} ) |
145 | || '/'; |
146 | } |
99fe1710 |
147 | |
1abd6db7 |
148 | my $results = $c->get_action( $command, $namespace ); |
99fe1710 |
149 | |
1abd6db7 |
150 | unless ( @{$results} ) { |
1f6bb799 |
151 | |
152 | unless ( $c->components->{$command} ) { |
153 | my $error = qq/Couldn't forward to command "$command". Invalid action or component./; |
3b2ed580 |
154 | $c->error($error); |
155 | $c->log->debug($error) if $c->debug; |
1abd6db7 |
156 | return 0; |
157 | } |
1f6bb799 |
158 | |
159 | my $class = $command; |
1abd6db7 |
160 | my $method = shift || 'process'; |
99fe1710 |
161 | |
1f6bb799 |
162 | if ( my $code = $c->components->{$class}->can($method) ) { |
1abd6db7 |
163 | $c->actions->{reverse}->{"$code"} = "$class->$method"; |
164 | $results = [ [ [ $class, $code ] ] ]; |
165 | } |
99fe1710 |
166 | |
1abd6db7 |
167 | else { |
1f6bb799 |
168 | my $error = qq/Couldn't forward to "$class". Does not implement "$method"/; |
3b2ed580 |
169 | $c->error($error); |
170 | $c->log->debug($error) |
1abd6db7 |
171 | if $c->debug; |
172 | return 0; |
173 | } |
99fe1710 |
174 | |
1abd6db7 |
175 | } |
e0fc6749 |
176 | |
40d15eb0 |
177 | local $c->request->{arguments} = [ @{ $arguments } ]; |
99fe1710 |
178 | |
1abd6db7 |
179 | for my $result ( @{$results} ) { |
180 | $c->execute( @{ $result->[0] } ); |
e0fc6749 |
181 | return if scalar @{ $c->error }; |
1abd6db7 |
182 | last unless $c->state; |
183 | } |
99fe1710 |
184 | |
1abd6db7 |
185 | return $c->state; |
186 | } |
187 | |
2d16b61a |
188 | =item $c->get_action( $action, $namespace, $inherit ) |
1abd6db7 |
189 | |
190 | Get an action in a given namespace. |
191 | |
192 | =cut |
193 | |
194 | sub get_action { |
2d16b61a |
195 | my ( $c, $action, $namespace, $inherit ) = @_; |
1abd6db7 |
196 | return [] unless $action; |
197 | $namespace ||= ''; |
2d16b61a |
198 | $inherit ||= 0; |
99fe1710 |
199 | |
1abd6db7 |
200 | if ($namespace) { |
201 | $namespace = '' if $namespace eq '/'; |
202 | my $parent = $c->tree; |
203 | my @results; |
99fe1710 |
204 | |
2d16b61a |
205 | if ($inherit) { |
1abd6db7 |
206 | my $result = $c->actions->{private}->{ $parent->getUID }->{$action}; |
207 | push @results, [$result] if $result; |
208 | my $visitor = Tree::Simple::Visitor::FindByPath->new; |
99fe1710 |
209 | |
1abd6db7 |
210 | for my $part ( split '/', $namespace ) { |
211 | $visitor->setSearchPath($part); |
212 | $parent->accept($visitor); |
213 | my $child = $visitor->getResult; |
214 | my $uid = $child->getUID if $child; |
215 | my $match = $c->actions->{private}->{$uid}->{$action} if $uid; |
216 | push @results, [$match] if $match; |
217 | $parent = $child if $child; |
218 | } |
99fe1710 |
219 | |
1abd6db7 |
220 | } |
99fe1710 |
221 | |
1abd6db7 |
222 | else { |
99fe1710 |
223 | |
1abd6db7 |
224 | if ($namespace) { |
225 | my $visitor = Tree::Simple::Visitor::FindByPath->new; |
226 | $visitor->setSearchPath( split '/', $namespace ); |
227 | $parent->accept($visitor); |
228 | my $child = $visitor->getResult; |
229 | my $uid = $child->getUID if $child; |
230 | my $match = $c->actions->{private}->{$uid}->{$action} |
231 | if $uid; |
232 | push @results, [$match] if $match; |
233 | } |
99fe1710 |
234 | |
1abd6db7 |
235 | else { |
236 | my $result = |
237 | $c->actions->{private}->{ $parent->getUID }->{$action}; |
238 | push @results, [$result] if $result; |
239 | } |
99fe1710 |
240 | |
1abd6db7 |
241 | } |
242 | return \@results; |
243 | } |
99fe1710 |
244 | |
1abd6db7 |
245 | elsif ( my $p = $c->actions->{plain}->{$action} ) { return [ [$p] ] } |
246 | elsif ( my $r = $c->actions->{regex}->{$action} ) { return [ [$r] ] } |
99fe1710 |
247 | |
1abd6db7 |
248 | else { |
99fe1710 |
249 | |
1abd6db7 |
250 | for my $i ( 0 .. $#{ $c->actions->{compiled} } ) { |
251 | my $name = $c->actions->{compiled}->[$i]->[0]; |
252 | my $regex = $c->actions->{compiled}->[$i]->[1]; |
99fe1710 |
253 | |
2d752b2a |
254 | if ( my @snippets = ( $action =~ $regex ) ) { |
1abd6db7 |
255 | return [ [ $c->actions->{regex}->{$name}, $name, \@snippets ] ]; |
256 | } |
99fe1710 |
257 | |
1abd6db7 |
258 | } |
259 | } |
260 | return []; |
261 | } |
262 | |
263 | =item $c->set_action( $action, $code, $namespace, $attrs ) |
264 | |
265 | Set an action in a given namespace. |
266 | |
267 | =cut |
268 | |
269 | sub set_action { |
270 | my ( $c, $method, $code, $namespace, $attrs ) = @_; |
271 | |
e494bd6b |
272 | my $prefix = |
273 | Catalyst::Utils::class2prefix( $namespace, $c->config->{case_sensitive} ) |
274 | || ''; |
1abd6db7 |
275 | my %flags; |
276 | |
277 | for my $attr ( @{$attrs} ) { |
0299ba22 |
278 | if ( $attr =~ /^(Local|Relative)$/ ) { $flags{local}++ } |
279 | elsif ( $attr =~ /^(Global|Absolute)$/ ) { $flags{global}++ } |
280 | elsif ( $attr =~ /^Path\(\s*(.+)\s*\)$/i ) { $flags{path} = $1 } |
281 | elsif ( $attr =~ /^Private$/i ) { $flags{private}++ } |
282 | elsif ( $attr =~ /^(Regex|Regexp)\(\s*(.+)\s*\)$/i ) { |
283 | $flags{regex} = $2; |
284 | } |
1abd6db7 |
285 | } |
286 | |
d0e524d2 |
287 | if ( $flags{private} && ( keys %flags > 1 ) ) { |
8d4e224b |
288 | $c->log->debug( 'Bad action definition "' |
d0e524d2 |
289 | . join( ' ', @{$attrs} ) |
8d4e224b |
290 | . qq/" for "$namespace->$method"/ ) |
291 | if $c->debug; |
d0e524d2 |
292 | return; |
293 | } |
1abd6db7 |
294 | return unless keys %flags; |
295 | |
296 | my $parent = $c->tree; |
297 | my $visitor = Tree::Simple::Visitor::FindByPath->new; |
99fe1710 |
298 | |
1abd6db7 |
299 | for my $part ( split '/', $prefix ) { |
300 | $visitor->setSearchPath($part); |
301 | $parent->accept($visitor); |
302 | my $child = $visitor->getResult; |
99fe1710 |
303 | |
1abd6db7 |
304 | unless ($child) { |
305 | $child = $parent->addChild( Tree::Simple->new($part) ); |
306 | $visitor->setSearchPath($part); |
307 | $parent->accept($visitor); |
308 | $child = $visitor->getResult; |
309 | } |
99fe1710 |
310 | |
1abd6db7 |
311 | $parent = $child; |
312 | } |
99fe1710 |
313 | |
1abd6db7 |
314 | my $uid = $parent->getUID; |
315 | $c->actions->{private}->{$uid}->{$method} = [ $namespace, $code ]; |
316 | my $forward = $prefix ? "$prefix/$method" : $method; |
317 | |
318 | if ( $flags{path} ) { |
319 | $flags{path} =~ s/^\w+//; |
320 | $flags{path} =~ s/\w+$//; |
321 | if ( $flags{path} =~ /^'(.*)'$/ ) { $flags{path} = $1 } |
322 | if ( $flags{path} =~ /^"(.*)"$/ ) { $flags{path} = $1 } |
323 | } |
99fe1710 |
324 | |
1abd6db7 |
325 | if ( $flags{regex} ) { |
326 | $flags{regex} =~ s/^\w+//; |
327 | $flags{regex} =~ s/\w+$//; |
328 | if ( $flags{regex} =~ /^'(.*)'$/ ) { $flags{regex} = $1 } |
329 | if ( $flags{regex} =~ /^"(.*)"$/ ) { $flags{regex} = $1 } |
330 | } |
331 | |
332 | my $reverse = $prefix ? "$prefix/$method" : $method; |
333 | |
334 | if ( $flags{local} || $flags{global} || $flags{path} ) { |
99fe1710 |
335 | my $path = $flags{path} || $method; |
1abd6db7 |
336 | my $absolute = 0; |
99fe1710 |
337 | |
1abd6db7 |
338 | if ( $path =~ /^\/(.+)/ ) { |
339 | $path = $1; |
340 | $absolute = 1; |
341 | } |
99fe1710 |
342 | |
1abd6db7 |
343 | $absolute = 1 if $flags{global}; |
344 | my $name = $absolute ? $path : $prefix ? "$prefix/$path" : $path; |
345 | $c->actions->{plain}->{$name} = [ $namespace, $code ]; |
346 | } |
99fe1710 |
347 | |
1abd6db7 |
348 | if ( my $regex = $flags{regex} ) { |
349 | push @{ $c->actions->{compiled} }, [ $regex, qr#$regex# ]; |
350 | $c->actions->{regex}->{$regex} = [ $namespace, $code ]; |
351 | } |
352 | |
353 | $c->actions->{reverse}->{"$code"} = $reverse; |
354 | } |
355 | |
356 | =item $class->setup_actions($component) |
357 | |
358 | Setup actions for a component. |
359 | |
360 | =cut |
361 | |
362 | sub setup_actions { |
a268a011 |
363 | my $self = shift; |
99fe1710 |
364 | |
12e28165 |
365 | # These are the core structures |
366 | $self->actions( |
367 | { |
368 | plain => {}, |
369 | private => {}, |
370 | regex => {}, |
371 | compiled => [], |
372 | reverse => {} |
373 | } |
374 | ); |
375 | |
376 | # We use a tree |
377 | $self->tree( Tree::Simple->new( 0, Tree::Simple->ROOT ) ); |
e494bd6b |
378 | |
a268a011 |
379 | for my $comp ( keys %{ $self->components } ) { |
e494bd6b |
380 | |
381 | # We only setup components that inherit from Catalyst::Base |
a268a011 |
382 | next unless $comp->isa('Catalyst::Base'); |
99fe1710 |
383 | |
812a28c9 |
384 | for my $action ( @{ Catalyst::Utils::reflect_actions($comp) } ) { |
1abd6db7 |
385 | my ( $code, $attrs ) = @{$action}; |
386 | my $name = ''; |
387 | no strict 'refs'; |
388 | my @cache = ( $comp, @{"$comp\::ISA"} ); |
389 | my %namespaces; |
99fe1710 |
390 | |
1abd6db7 |
391 | while ( my $namespace = shift @cache ) { |
392 | $namespaces{$namespace}++; |
393 | for my $isa ( @{"$comp\::ISA"} ) { |
394 | next if $namespaces{$isa}; |
395 | push @cache, $isa; |
396 | $namespaces{$isa}++; |
397 | } |
398 | } |
99fe1710 |
399 | |
1abd6db7 |
400 | for my $namespace ( keys %namespaces ) { |
99fe1710 |
401 | |
1abd6db7 |
402 | for my $sym ( values %{ $namespace . '::' } ) { |
99fe1710 |
403 | |
1abd6db7 |
404 | if ( *{$sym}{CODE} && *{$sym}{CODE} == $code ) { |
99fe1710 |
405 | |
1abd6db7 |
406 | $name = *{$sym}{NAME}; |
407 | $self->set_action( $name, $code, $comp, $attrs ); |
408 | last; |
409 | } |
99fe1710 |
410 | |
1abd6db7 |
411 | } |
99fe1710 |
412 | |
1abd6db7 |
413 | } |
99fe1710 |
414 | |
1abd6db7 |
415 | } |
99fe1710 |
416 | |
1abd6db7 |
417 | } |
e494bd6b |
418 | |
a268a011 |
419 | return unless $self->debug; |
99fe1710 |
420 | |
1abd6db7 |
421 | my $actions = $self->actions; |
422 | my $privates = Text::ASCIITable->new; |
5fbed090 |
423 | $privates->setCols( 'Private', 'Class' ); |
424 | $privates->setColWidth( 'Private', 36, 1 ); |
425 | $privates->setColWidth( 'Class', 37, 1 ); |
99fe1710 |
426 | |
1abd6db7 |
427 | my $walker = sub { |
428 | my ( $walker, $parent, $prefix ) = @_; |
429 | $prefix .= $parent->getNodeValue || ''; |
430 | $prefix .= '/' unless $prefix =~ /\/$/; |
431 | my $uid = $parent->getUID; |
99fe1710 |
432 | |
1abd6db7 |
433 | for my $action ( keys %{ $actions->{private}->{$uid} } ) { |
434 | my ( $class, $code ) = @{ $actions->{private}->{$uid}->{$action} }; |
d36e81fd |
435 | $privates->addRow( "$prefix$action", $class ); |
1abd6db7 |
436 | } |
99fe1710 |
437 | |
1abd6db7 |
438 | $walker->( $walker, $_, $prefix ) for $parent->getAllChildren; |
439 | }; |
99fe1710 |
440 | |
1abd6db7 |
441 | $walker->( $walker, $self->tree, '' ); |
f45789b1 |
442 | $self->log->debug( "Loaded private actions:\n" . $privates->draw ) |
a268a011 |
443 | if ( @{ $privates->{tbl_rows} } ); |
99fe1710 |
444 | |
1abd6db7 |
445 | my $publics = Text::ASCIITable->new; |
446 | $publics->setCols( 'Public', 'Private' ); |
699e1247 |
447 | $publics->setColWidth( 'Public', 36, 1 ); |
448 | $publics->setColWidth( 'Private', 37, 1 ); |
99fe1710 |
449 | |
1abd6db7 |
450 | for my $plain ( sort keys %{ $actions->{plain} } ) { |
451 | my ( $class, $code ) = @{ $actions->{plain}->{$plain} }; |
7ace516e |
452 | my $reverse = $self->actions->{reverse}->{$code}; |
453 | $reverse = $reverse ? "/$reverse" : $code; |
cd677e12 |
454 | $publics->addRow( "/$plain", $reverse ); |
1abd6db7 |
455 | } |
99fe1710 |
456 | |
f45789b1 |
457 | $self->log->debug( "Loaded public actions:\n" . $publics->draw ) |
a268a011 |
458 | if ( @{ $publics->{tbl_rows} } ); |
99fe1710 |
459 | |
1abd6db7 |
460 | my $regexes = Text::ASCIITable->new; |
461 | $regexes->setCols( 'Regex', 'Private' ); |
699e1247 |
462 | $regexes->setColWidth( 'Regex', 36, 1 ); |
463 | $regexes->setColWidth( 'Private', 37, 1 ); |
99fe1710 |
464 | |
1abd6db7 |
465 | for my $regex ( sort keys %{ $actions->{regex} } ) { |
466 | my ( $class, $code ) = @{ $actions->{regex}->{$regex} }; |
7ace516e |
467 | my $reverse = $self->actions->{reverse}->{$code}; |
468 | $reverse = $reverse ? "/$reverse" : $code; |
cd677e12 |
469 | $regexes->addRow( $regex, $reverse ); |
1abd6db7 |
470 | } |
99fe1710 |
471 | |
f45789b1 |
472 | $self->log->debug( "Loaded regex actions:\n" . $regexes->draw ) |
a268a011 |
473 | if ( @{ $regexes->{tbl_rows} } ); |
1abd6db7 |
474 | } |
475 | |
1abd6db7 |
476 | =back |
477 | |
478 | =head1 AUTHOR |
479 | |
480 | Sebastian Riedel, C<sri@cpan.org> |
481 | |
482 | =head1 COPYRIGHT |
483 | |
484 | This program is free software, you can redistribute it and/or modify it under |
485 | the same terms as Perl itself. |
486 | |
487 | =cut |
488 | |
489 | 1; |