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68a748b9 |
1 | package Catalyst::Dispatcher; |
1abd6db7 |
2 | |
3 | use strict; |
4 | use base 'Class::Data::Inheritable'; |
f05af9ba |
5 | use Catalyst::Utils; |
1abd6db7 |
6 | use Text::ASCIITable; |
1abd6db7 |
7 | use Tree::Simple; |
8 | use Tree::Simple::Visitor::FindByPath; |
9 | |
10 | __PACKAGE__->mk_classdata($_) for qw/actions tree/; |
11 | |
1abd6db7 |
12 | =head1 NAME |
13 | |
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14 | Catalyst::Dispatcher - The Catalyst Dispatcher |
1abd6db7 |
15 | |
16 | =head1 SYNOPSIS |
17 | |
18 | See L<Catalyst>. |
19 | |
20 | =head1 DESCRIPTION |
21 | |
22 | =head1 METHODS |
23 | |
24 | =over 4 |
25 | |
6ef62eb2 |
26 | =item $c->detach($command) |
27 | |
28 | Like C<forward> but doesn't return. |
29 | |
30 | =cut |
31 | |
32 | sub detach { |
33 | my ( $c, $command ) = @_; |
34 | $c->forward($command) if $command; |
35 | die $Catalyst::Engine::DETACH; |
36 | } |
37 | |
1abd6db7 |
38 | =item $c->dispatch |
39 | |
40 | Dispatch request to actions. |
41 | |
42 | =cut |
43 | |
44 | sub dispatch { |
45 | my $c = shift; |
46 | my $action = $c->req->action; |
47 | my $namespace = ''; |
48 | $namespace = ( join( '/', @{ $c->req->args } ) || '/' ) |
49 | if $action eq 'default'; |
99fe1710 |
50 | |
1abd6db7 |
51 | unless ($namespace) { |
52 | if ( my $result = $c->get_action($action) ) { |
e494bd6b |
53 | $namespace = Catalyst::Utils::class2prefix( $result->[0]->[0]->[0], |
54 | $c->config->{case_sensitive} ); |
1abd6db7 |
55 | } |
56 | } |
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57 | |
1abd6db7 |
58 | my $default = $action eq 'default' ? $namespace : undef; |
2d16b61a |
59 | my $results = $c->get_action( $action, $default, $default ? 1 : 0 ); |
1abd6db7 |
60 | $namespace ||= '/'; |
99fe1710 |
61 | |
1abd6db7 |
62 | if ( @{$results} ) { |
63 | |
64 | # Execute last begin |
65 | $c->state(1); |
2d16b61a |
66 | if ( my $begin = @{ $c->get_action( 'begin', $namespace, 1 ) }[-1] ) { |
1abd6db7 |
67 | $c->execute( @{ $begin->[0] } ); |
68 | return if scalar @{ $c->error }; |
69 | } |
70 | |
71 | # Execute the auto chain |
1196a46d |
72 | my $autorun = 0; |
9ddd9d05 |
73 | for my $auto ( @{ $c->get_action( 'auto', $namespace, 1 ) } ) { |
74 | $autorun++; |
1abd6db7 |
75 | $c->execute( @{ $auto->[0] } ); |
76 | return if scalar @{ $c->error }; |
77 | last unless $c->state; |
78 | } |
79 | |
80 | # Execute the action or last default |
e5f21aa2 |
81 | my $mkay = $autorun ? $c->state ? 1 : 0 : 1; |
61cfdd57 |
82 | if ( ( my $action = $c->req->action ) && $mkay ) { |
2d16b61a |
83 | if ( my $result = @{ $c->get_action( $action, $default, 1 ) }[-1] ) |
84 | { |
1abd6db7 |
85 | $c->execute( @{ $result->[0] } ); |
86 | } |
87 | } |
88 | |
89 | # Execute last end |
2d16b61a |
90 | if ( my $end = @{ $c->get_action( 'end', $namespace, 1 ) }[-1] ) { |
1abd6db7 |
91 | $c->execute( @{ $end->[0] } ); |
92 | return if scalar @{ $c->error }; |
93 | } |
94 | } |
99fe1710 |
95 | |
1abd6db7 |
96 | else { |
97 | my $path = $c->req->path; |
98 | my $error = $path |
99 | ? qq/Unknown resource "$path"/ |
100 | : "No default action defined"; |
101 | $c->log->error($error) if $c->debug; |
102 | $c->error($error); |
103 | } |
104 | } |
105 | |
106 | =item $c->forward($command) |
107 | |
108 | Forward processing to a private action or a method from a class. |
109 | If you define a class without method it will default to process(). |
110 | |
111 | $c->forward('/foo'); |
112 | $c->forward('index'); |
113 | $c->forward(qw/MyApp::Model::CDBI::Foo do_stuff/); |
114 | $c->forward('MyApp::View::TT'); |
115 | |
116 | =cut |
117 | |
118 | sub forward { |
119 | my $c = shift; |
120 | my $command = shift; |
99fe1710 |
121 | |
1abd6db7 |
122 | unless ($command) { |
123 | $c->log->debug('Nothing to forward to') if $c->debug; |
124 | return 0; |
125 | } |
99fe1710 |
126 | |
1abd6db7 |
127 | my $caller = caller(0); |
128 | my $namespace = '/'; |
99fe1710 |
129 | |
1abd6db7 |
130 | if ( $command =~ /^\// ) { |
db0ca23c |
131 | $command =~ /^\/(.*)\/(\w+)$/; |
1abd6db7 |
132 | $namespace = $1 || '/'; |
db0ca23c |
133 | $command = $2 || $command; |
134 | $command =~ s/^\///; |
1abd6db7 |
135 | } |
99fe1710 |
136 | |
e494bd6b |
137 | else { |
138 | $namespace = |
139 | Catalyst::Utils::class2prefix( $caller, $c->config->{case_sensitive} ) |
140 | || '/'; |
141 | } |
99fe1710 |
142 | |
1abd6db7 |
143 | my $results = $c->get_action( $command, $namespace ); |
99fe1710 |
144 | |
1abd6db7 |
145 | unless ( @{$results} ) { |
cd677e12 |
146 | my $class = $command || ''; |
812a28c9 |
147 | my $path = $class . '.pm'; |
fe14cf78 |
148 | $path =~ s/::/\//g; |
99fe1710 |
149 | |
812a28c9 |
150 | unless ( $INC{$path} ) { |
151 | my $error = |
152 | qq/Couldn't forward to "$class". Invalid or not loaded./; |
3b2ed580 |
153 | $c->error($error); |
154 | $c->log->debug($error) if $c->debug; |
1abd6db7 |
155 | return 0; |
156 | } |
812a28c9 |
157 | |
3245f607 |
158 | unless ( UNIVERSAL::isa( $class, 'Catalyst::Base' ) ) { |
812a28c9 |
159 | my $error = |
160 | qq/Can't forward to "$class". Class is not a Catalyst component./; |
3245f607 |
161 | $c->error($error); |
162 | $c->log->debug($error) if $c->debug; |
812a28c9 |
163 | return 0; |
3245f607 |
164 | } |
99fe1710 |
165 | |
1abd6db7 |
166 | my $method = shift || 'process'; |
99fe1710 |
167 | |
1abd6db7 |
168 | if ( my $code = $class->can($method) ) { |
169 | $c->actions->{reverse}->{"$code"} = "$class->$method"; |
170 | $results = [ [ [ $class, $code ] ] ]; |
171 | } |
99fe1710 |
172 | |
1abd6db7 |
173 | else { |
812a28c9 |
174 | my $error = |
175 | qq/Couldn't forward to "$class". Does not implement "$method"/; |
3b2ed580 |
176 | $c->error($error); |
177 | $c->log->debug($error) |
1abd6db7 |
178 | if $c->debug; |
179 | return 0; |
180 | } |
99fe1710 |
181 | |
1abd6db7 |
182 | } |
99fe1710 |
183 | |
1abd6db7 |
184 | for my $result ( @{$results} ) { |
185 | $c->execute( @{ $result->[0] } ); |
186 | return if scalar @{ $c->error }; |
187 | last unless $c->state; |
188 | } |
99fe1710 |
189 | |
1abd6db7 |
190 | return $c->state; |
191 | } |
192 | |
2d16b61a |
193 | =item $c->get_action( $action, $namespace, $inherit ) |
1abd6db7 |
194 | |
195 | Get an action in a given namespace. |
196 | |
197 | =cut |
198 | |
199 | sub get_action { |
2d16b61a |
200 | my ( $c, $action, $namespace, $inherit ) = @_; |
1abd6db7 |
201 | return [] unless $action; |
202 | $namespace ||= ''; |
2d16b61a |
203 | $inherit ||= 0; |
99fe1710 |
204 | |
1abd6db7 |
205 | if ($namespace) { |
206 | $namespace = '' if $namespace eq '/'; |
207 | my $parent = $c->tree; |
208 | my @results; |
99fe1710 |
209 | |
2d16b61a |
210 | if ($inherit) { |
1abd6db7 |
211 | my $result = $c->actions->{private}->{ $parent->getUID }->{$action}; |
212 | push @results, [$result] if $result; |
213 | my $visitor = Tree::Simple::Visitor::FindByPath->new; |
99fe1710 |
214 | |
1abd6db7 |
215 | for my $part ( split '/', $namespace ) { |
216 | $visitor->setSearchPath($part); |
217 | $parent->accept($visitor); |
218 | my $child = $visitor->getResult; |
219 | my $uid = $child->getUID if $child; |
220 | my $match = $c->actions->{private}->{$uid}->{$action} if $uid; |
221 | push @results, [$match] if $match; |
222 | $parent = $child if $child; |
223 | } |
99fe1710 |
224 | |
1abd6db7 |
225 | } |
99fe1710 |
226 | |
1abd6db7 |
227 | else { |
99fe1710 |
228 | |
1abd6db7 |
229 | if ($namespace) { |
230 | my $visitor = Tree::Simple::Visitor::FindByPath->new; |
231 | $visitor->setSearchPath( split '/', $namespace ); |
232 | $parent->accept($visitor); |
233 | my $child = $visitor->getResult; |
234 | my $uid = $child->getUID if $child; |
235 | my $match = $c->actions->{private}->{$uid}->{$action} |
236 | if $uid; |
237 | push @results, [$match] if $match; |
238 | } |
99fe1710 |
239 | |
1abd6db7 |
240 | else { |
241 | my $result = |
242 | $c->actions->{private}->{ $parent->getUID }->{$action}; |
243 | push @results, [$result] if $result; |
244 | } |
99fe1710 |
245 | |
1abd6db7 |
246 | } |
247 | return \@results; |
248 | } |
99fe1710 |
249 | |
1abd6db7 |
250 | elsif ( my $p = $c->actions->{plain}->{$action} ) { return [ [$p] ] } |
251 | elsif ( my $r = $c->actions->{regex}->{$action} ) { return [ [$r] ] } |
99fe1710 |
252 | |
1abd6db7 |
253 | else { |
99fe1710 |
254 | |
1abd6db7 |
255 | for my $i ( 0 .. $#{ $c->actions->{compiled} } ) { |
256 | my $name = $c->actions->{compiled}->[$i]->[0]; |
257 | my $regex = $c->actions->{compiled}->[$i]->[1]; |
99fe1710 |
258 | |
2d752b2a |
259 | if ( my @snippets = ( $action =~ $regex ) ) { |
1abd6db7 |
260 | return [ [ $c->actions->{regex}->{$name}, $name, \@snippets ] ]; |
261 | } |
99fe1710 |
262 | |
1abd6db7 |
263 | } |
264 | } |
265 | return []; |
266 | } |
267 | |
268 | =item $c->set_action( $action, $code, $namespace, $attrs ) |
269 | |
270 | Set an action in a given namespace. |
271 | |
272 | =cut |
273 | |
274 | sub set_action { |
275 | my ( $c, $method, $code, $namespace, $attrs ) = @_; |
276 | |
e494bd6b |
277 | my $prefix = |
278 | Catalyst::Utils::class2prefix( $namespace, $c->config->{case_sensitive} ) |
279 | || ''; |
1abd6db7 |
280 | my %flags; |
281 | |
282 | for my $attr ( @{$attrs} ) { |
0299ba22 |
283 | if ( $attr =~ /^(Local|Relative)$/ ) { $flags{local}++ } |
284 | elsif ( $attr =~ /^(Global|Absolute)$/ ) { $flags{global}++ } |
285 | elsif ( $attr =~ /^Path\(\s*(.+)\s*\)$/i ) { $flags{path} = $1 } |
286 | elsif ( $attr =~ /^Private$/i ) { $flags{private}++ } |
287 | elsif ( $attr =~ /^(Regex|Regexp)\(\s*(.+)\s*\)$/i ) { |
288 | $flags{regex} = $2; |
289 | } |
1abd6db7 |
290 | } |
291 | |
d0e524d2 |
292 | if ( $flags{private} && ( keys %flags > 1 ) ) { |
8d4e224b |
293 | $c->log->debug( 'Bad action definition "' |
d0e524d2 |
294 | . join( ' ', @{$attrs} ) |
8d4e224b |
295 | . qq/" for "$namespace->$method"/ ) |
296 | if $c->debug; |
d0e524d2 |
297 | return; |
298 | } |
1abd6db7 |
299 | return unless keys %flags; |
300 | |
301 | my $parent = $c->tree; |
302 | my $visitor = Tree::Simple::Visitor::FindByPath->new; |
99fe1710 |
303 | |
1abd6db7 |
304 | for my $part ( split '/', $prefix ) { |
305 | $visitor->setSearchPath($part); |
306 | $parent->accept($visitor); |
307 | my $child = $visitor->getResult; |
99fe1710 |
308 | |
1abd6db7 |
309 | unless ($child) { |
310 | $child = $parent->addChild( Tree::Simple->new($part) ); |
311 | $visitor->setSearchPath($part); |
312 | $parent->accept($visitor); |
313 | $child = $visitor->getResult; |
314 | } |
99fe1710 |
315 | |
1abd6db7 |
316 | $parent = $child; |
317 | } |
99fe1710 |
318 | |
1abd6db7 |
319 | my $uid = $parent->getUID; |
320 | $c->actions->{private}->{$uid}->{$method} = [ $namespace, $code ]; |
321 | my $forward = $prefix ? "$prefix/$method" : $method; |
322 | |
323 | if ( $flags{path} ) { |
324 | $flags{path} =~ s/^\w+//; |
325 | $flags{path} =~ s/\w+$//; |
326 | if ( $flags{path} =~ /^'(.*)'$/ ) { $flags{path} = $1 } |
327 | if ( $flags{path} =~ /^"(.*)"$/ ) { $flags{path} = $1 } |
328 | } |
99fe1710 |
329 | |
1abd6db7 |
330 | if ( $flags{regex} ) { |
331 | $flags{regex} =~ s/^\w+//; |
332 | $flags{regex} =~ s/\w+$//; |
333 | if ( $flags{regex} =~ /^'(.*)'$/ ) { $flags{regex} = $1 } |
334 | if ( $flags{regex} =~ /^"(.*)"$/ ) { $flags{regex} = $1 } |
335 | } |
336 | |
337 | my $reverse = $prefix ? "$prefix/$method" : $method; |
338 | |
339 | if ( $flags{local} || $flags{global} || $flags{path} ) { |
99fe1710 |
340 | my $path = $flags{path} || $method; |
1abd6db7 |
341 | my $absolute = 0; |
99fe1710 |
342 | |
1abd6db7 |
343 | if ( $path =~ /^\/(.+)/ ) { |
344 | $path = $1; |
345 | $absolute = 1; |
346 | } |
99fe1710 |
347 | |
1abd6db7 |
348 | $absolute = 1 if $flags{global}; |
349 | my $name = $absolute ? $path : $prefix ? "$prefix/$path" : $path; |
350 | $c->actions->{plain}->{$name} = [ $namespace, $code ]; |
351 | } |
99fe1710 |
352 | |
1abd6db7 |
353 | if ( my $regex = $flags{regex} ) { |
354 | push @{ $c->actions->{compiled} }, [ $regex, qr#$regex# ]; |
355 | $c->actions->{regex}->{$regex} = [ $namespace, $code ]; |
356 | } |
357 | |
358 | $c->actions->{reverse}->{"$code"} = $reverse; |
359 | } |
360 | |
361 | =item $class->setup_actions($component) |
362 | |
363 | Setup actions for a component. |
364 | |
365 | =cut |
366 | |
367 | sub setup_actions { |
a268a011 |
368 | my $self = shift; |
99fe1710 |
369 | |
12e28165 |
370 | # These are the core structures |
371 | $self->actions( |
372 | { |
373 | plain => {}, |
374 | private => {}, |
375 | regex => {}, |
376 | compiled => [], |
377 | reverse => {} |
378 | } |
379 | ); |
380 | |
381 | # We use a tree |
382 | $self->tree( Tree::Simple->new( 0, Tree::Simple->ROOT ) ); |
e494bd6b |
383 | |
a268a011 |
384 | for my $comp ( keys %{ $self->components } ) { |
e494bd6b |
385 | |
386 | # We only setup components that inherit from Catalyst::Base |
a268a011 |
387 | next unless $comp->isa('Catalyst::Base'); |
99fe1710 |
388 | |
812a28c9 |
389 | for my $action ( @{ Catalyst::Utils::reflect_actions($comp) } ) { |
1abd6db7 |
390 | my ( $code, $attrs ) = @{$action}; |
391 | my $name = ''; |
392 | no strict 'refs'; |
393 | my @cache = ( $comp, @{"$comp\::ISA"} ); |
394 | my %namespaces; |
99fe1710 |
395 | |
1abd6db7 |
396 | while ( my $namespace = shift @cache ) { |
397 | $namespaces{$namespace}++; |
398 | for my $isa ( @{"$comp\::ISA"} ) { |
399 | next if $namespaces{$isa}; |
400 | push @cache, $isa; |
401 | $namespaces{$isa}++; |
402 | } |
403 | } |
99fe1710 |
404 | |
1abd6db7 |
405 | for my $namespace ( keys %namespaces ) { |
99fe1710 |
406 | |
1abd6db7 |
407 | for my $sym ( values %{ $namespace . '::' } ) { |
99fe1710 |
408 | |
1abd6db7 |
409 | if ( *{$sym}{CODE} && *{$sym}{CODE} == $code ) { |
99fe1710 |
410 | |
1abd6db7 |
411 | $name = *{$sym}{NAME}; |
412 | $self->set_action( $name, $code, $comp, $attrs ); |
413 | last; |
414 | } |
99fe1710 |
415 | |
1abd6db7 |
416 | } |
99fe1710 |
417 | |
1abd6db7 |
418 | } |
99fe1710 |
419 | |
1abd6db7 |
420 | } |
99fe1710 |
421 | |
1abd6db7 |
422 | } |
e494bd6b |
423 | |
a268a011 |
424 | return unless $self->debug; |
99fe1710 |
425 | |
1abd6db7 |
426 | my $actions = $self->actions; |
427 | my $privates = Text::ASCIITable->new; |
5fbed090 |
428 | $privates->setCols( 'Private', 'Class' ); |
429 | $privates->setColWidth( 'Private', 36, 1 ); |
430 | $privates->setColWidth( 'Class', 37, 1 ); |
99fe1710 |
431 | |
1abd6db7 |
432 | my $walker = sub { |
433 | my ( $walker, $parent, $prefix ) = @_; |
434 | $prefix .= $parent->getNodeValue || ''; |
435 | $prefix .= '/' unless $prefix =~ /\/$/; |
436 | my $uid = $parent->getUID; |
99fe1710 |
437 | |
1abd6db7 |
438 | for my $action ( keys %{ $actions->{private}->{$uid} } ) { |
439 | my ( $class, $code ) = @{ $actions->{private}->{$uid}->{$action} }; |
d36e81fd |
440 | $privates->addRow( "$prefix$action", $class ); |
1abd6db7 |
441 | } |
99fe1710 |
442 | |
1abd6db7 |
443 | $walker->( $walker, $_, $prefix ) for $parent->getAllChildren; |
444 | }; |
99fe1710 |
445 | |
1abd6db7 |
446 | $walker->( $walker, $self->tree, '' ); |
447 | $self->log->debug( 'Loaded private actions', $privates->draw ) |
a268a011 |
448 | if ( @{ $privates->{tbl_rows} } ); |
99fe1710 |
449 | |
1abd6db7 |
450 | my $publics = Text::ASCIITable->new; |
451 | $publics->setCols( 'Public', 'Private' ); |
699e1247 |
452 | $publics->setColWidth( 'Public', 36, 1 ); |
453 | $publics->setColWidth( 'Private', 37, 1 ); |
99fe1710 |
454 | |
1abd6db7 |
455 | for my $plain ( sort keys %{ $actions->{plain} } ) { |
456 | my ( $class, $code ) = @{ $actions->{plain}->{$plain} }; |
7ace516e |
457 | my $reverse = $self->actions->{reverse}->{$code}; |
458 | $reverse = $reverse ? "/$reverse" : $code; |
cd677e12 |
459 | $publics->addRow( "/$plain", $reverse ); |
1abd6db7 |
460 | } |
99fe1710 |
461 | |
1abd6db7 |
462 | $self->log->debug( 'Loaded public actions', $publics->draw ) |
a268a011 |
463 | if ( @{ $publics->{tbl_rows} } ); |
99fe1710 |
464 | |
1abd6db7 |
465 | my $regexes = Text::ASCIITable->new; |
466 | $regexes->setCols( 'Regex', 'Private' ); |
699e1247 |
467 | $regexes->setColWidth( 'Regex', 36, 1 ); |
468 | $regexes->setColWidth( 'Private', 37, 1 ); |
99fe1710 |
469 | |
1abd6db7 |
470 | for my $regex ( sort keys %{ $actions->{regex} } ) { |
471 | my ( $class, $code ) = @{ $actions->{regex}->{$regex} }; |
7ace516e |
472 | my $reverse = $self->actions->{reverse}->{$code}; |
473 | $reverse = $reverse ? "/$reverse" : $code; |
cd677e12 |
474 | $regexes->addRow( $regex, $reverse ); |
1abd6db7 |
475 | } |
99fe1710 |
476 | |
1abd6db7 |
477 | $self->log->debug( 'Loaded regex actions', $regexes->draw ) |
a268a011 |
478 | if ( @{ $regexes->{tbl_rows} } ); |
1abd6db7 |
479 | } |
480 | |
1abd6db7 |
481 | =back |
482 | |
483 | =head1 AUTHOR |
484 | |
485 | Sebastian Riedel, C<sri@cpan.org> |
486 | |
487 | =head1 COPYRIGHT |
488 | |
489 | This program is free software, you can redistribute it and/or modify it under |
490 | the same terms as Perl itself. |
491 | |
492 | =cut |
493 | |
494 | 1; |