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1 | package Catalyst::Utils; |
2 | |
3 | use strict; |
37a3ac5c |
4 | use File::Spec; |
d837e1a7 |
5 | use HTTP::Request; |
812a28c9 |
6 | use Path::Class; |
d837e1a7 |
7 | use URI; |
5e5bd6df |
8 | use Carp qw/croak/; |
2f381252 |
9 | use Cwd; |
808db1d6 |
10 | use Class::MOP; |
17b3d800 |
11 | use String::RewritePrefix; |
12 | |
0db6e9d5 |
13 | use namespace::clean; |
14 | |
f05af9ba |
15 | =head1 NAME |
16 | |
17 | Catalyst::Utils - The Catalyst Utils |
18 | |
19 | =head1 SYNOPSIS |
20 | |
21 | See L<Catalyst>. |
22 | |
23 | =head1 DESCRIPTION |
24 | |
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25 | Catalyst Utilities. |
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26 | |
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27 | =head1 METHODS |
28 | |
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29 | =head2 appprefix($class) |
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30 | |
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31 | MyApp::Foo becomes myapp_foo |
41ca9ba7 |
32 | |
33 | =cut |
34 | |
35 | sub appprefix { |
36 | my $class = shift; |
0ef447d8 |
37 | $class =~ s/::/_/g; |
41ca9ba7 |
38 | $class = lc($class); |
39 | return $class; |
40 | } |
41 | |
b5ecfcf0 |
42 | =head2 class2appclass($class); |
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43 | |
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44 | MyApp::Controller::Foo::Bar becomes MyApp |
45 | My::App::Controller::Foo::Bar becomes My::App |
2d90477f |
46 | |
84cf74e7 |
47 | =cut |
48 | |
49 | sub class2appclass { |
50 | my $class = shift || ''; |
51 | my $appname = ''; |
0ef447d8 |
52 | if ( $class =~ /^(.+?)::([MVC]|Model|View|Controller)::.+$/ ) { |
84cf74e7 |
53 | $appname = $1; |
54 | } |
55 | return $appname; |
56 | } |
57 | |
b5ecfcf0 |
58 | =head2 class2classprefix($class); |
2930d610 |
59 | |
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60 | MyApp::Controller::Foo::Bar becomes MyApp::Controller |
61 | My::App::Controller::Foo::Bar becomes My::App::Controller |
2d90477f |
62 | |
2930d610 |
63 | =cut |
64 | |
65 | sub class2classprefix { |
66 | my $class = shift || ''; |
67 | my $prefix; |
0ef447d8 |
68 | if ( $class =~ /^(.+?::([MVC]|Model|View|Controller))::.+$/ ) { |
2930d610 |
69 | $prefix = $1; |
70 | } |
71 | return $prefix; |
72 | } |
73 | |
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74 | =head2 class2classsuffix($class); |
84cf74e7 |
75 | |
0ef447d8 |
76 | MyApp::Controller::Foo::Bar becomes Controller::Foo::Bar |
2d90477f |
77 | |
84cf74e7 |
78 | =cut |
79 | |
80 | sub class2classsuffix { |
81 | my $class = shift || ''; |
82 | my $prefix = class2appclass($class) || ''; |
0ef447d8 |
83 | $class =~ s/$prefix\:://; |
84cf74e7 |
84 | return $class; |
85 | } |
86 | |
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87 | =head2 class2classshortsuffix($class) |
88 | |
89 | MyApp::Controller::Foo::Bar becomes Foo::Bar |
90 | |
91 | =cut |
92 | |
93 | sub class2classshortsuffix { |
94 | my $class = shift || ''; |
95 | my $prefix = class2classprefix($class) || ''; |
96 | $class =~ s/$prefix\:://; |
97 | return $class; |
98 | } |
99 | |
100 | |
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101 | =head2 class2env($class); |
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102 | |
26e73131 |
103 | Returns the environment name for class. |
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104 | |
105 | MyApp becomes MYAPP |
106 | My::App becomes MY_APP |
107 | |
108 | =cut |
109 | |
110 | sub class2env { |
111 | my $class = shift || ''; |
0ef447d8 |
112 | $class =~ s/::/_/g; |
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113 | return uc($class); |
114 | } |
115 | |
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116 | =head2 class2prefix( $class, $case ); |
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117 | |
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118 | Returns the uri prefix for a class. If case is false the prefix is converted to lowercase. |
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119 | |
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120 | My::App::Controller::Foo::Bar becomes foo/bar |
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121 | |
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122 | =cut |
123 | |
124 | sub class2prefix { |
125 | my $class = shift || ''; |
e494bd6b |
126 | my $case = shift || 0; |
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127 | my $prefix; |
0ef447d8 |
128 | if ( $class =~ /^.+?::([MVC]|Model|View|Controller)::(.+)$/ ) { |
e494bd6b |
129 | $prefix = $case ? $2 : lc $2; |
0ef447d8 |
130 | $prefix =~ s{::}{/}g; |
f05af9ba |
131 | } |
132 | return $prefix; |
133 | } |
134 | |
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135 | =head2 class2tempdir( $class [, $create ] ); |
37a3ac5c |
136 | |
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137 | Returns a tempdir for a class. If create is true it will try to create the path. |
37a3ac5c |
138 | |
139 | My::App becomes /tmp/my/app |
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140 | My::App::Controller::Foo::Bar becomes /tmp/my/app/c/foo/bar |
37a3ac5c |
141 | |
142 | =cut |
143 | |
144 | sub class2tempdir { |
145 | my $class = shift || ''; |
146 | my $create = shift || 0; |
4be535b1 |
147 | my @parts = split '::', lc $class; |
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148 | |
149 | my $tmpdir = dir( File::Spec->tmpdir, @parts )->cleanup; |
150 | |
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151 | if ( $create && !-e $tmpdir ) { |
37a3ac5c |
152 | |
153 | eval { $tmpdir->mkpath }; |
154 | |
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155 | if ($@) { |
41a8bf1f |
156 | # don't load Catalyst::Exception as a BEGIN in Utils, |
157 | # because Utils often gets loaded before MyApp.pm, and if |
158 | # Catalyst::Exception is loaded before MyApp.pm, it does |
159 | # not honor setting |
160 | # $Catalyst::Exception::CATALYST_EXCEPTION_CLASS in |
161 | # MyApp.pm |
162 | require Catalyst::Exception; |
37a3ac5c |
163 | Catalyst::Exception->throw( |
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164 | message => qq/Couldn't create tmpdir '$tmpdir', "$@"/ ); |
37a3ac5c |
165 | } |
166 | } |
167 | |
168 | return $tmpdir->stringify; |
169 | } |
170 | |
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171 | =head2 home($class) |
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172 | |
173 | Returns home directory for given class. |
174 | |
175 | =cut |
176 | |
177 | sub home { |
51f412bd |
178 | my $class = shift; |
179 | |
180 | # make an $INC{ $key } style string from the class name |
181 | (my $file = "$class.pm") =~ s{::}{/}g; |
182 | |
183 | if ( my $inc_entry = $INC{$file} ) { |
51452916 |
184 | { |
51f412bd |
185 | # look for an uninstalled Catalyst app |
186 | |
187 | # find the @INC entry in which $file was found |
188 | (my $path = $inc_entry) =~ s/$file$//; |
2f381252 |
189 | $path ||= cwd() if !defined $path || !length $path; |
51f412bd |
190 | my $home = dir($path)->absolute->cleanup; |
191 | |
192 | # pop off /lib and /blib if they're there |
193 | $home = $home->parent while $home =~ /b?lib$/; |
194 | |
b39b4848 |
195 | # only return the dir if it has a Makefile.PL or Build.PL or dist.ini |
196 | if (-f $home->file("Makefile.PL") or -f $home->file("Build.PL") |
197 | or -f $home->file("dist.ini")) { |
c09c6cd7 |
198 | |
199 | # clean up relative path: |
200 | # MyApp/script/.. -> MyApp |
201 | |
059c085b |
202 | my $dir; |
203 | my @dir_list = $home->dir_list(); |
204 | while (($dir = pop(@dir_list)) && $dir eq '..') { |
c09c6cd7 |
205 | $home = dir($home)->parent->parent; |
206 | } |
207 | |
208 | return $home->stringify; |
209 | } |
51452916 |
210 | } |
4be535b1 |
211 | |
51f412bd |
212 | { |
213 | # look for an installed Catalyst app |
214 | |
215 | # trim the .pm off the thing ( Foo/Bar.pm -> Foo/Bar/ ) |
216 | ( my $path = $inc_entry) =~ s/\.pm$//; |
217 | my $home = dir($path)->absolute->cleanup; |
218 | |
219 | # return if if it's a valid directory |
220 | return $home->stringify if -d $home; |
62459712 |
221 | } |
812a28c9 |
222 | } |
51f412bd |
223 | |
224 | # we found nothing |
225 | return 0; |
812a28c9 |
226 | } |
227 | |
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228 | =head2 prefix($class, $name); |
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229 | |
230 | Returns a prefixed action. |
231 | |
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232 | MyApp::Controller::Foo::Bar, yada becomes foo/bar/yada |
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233 | |
234 | =cut |
235 | |
236 | sub prefix { |
237 | my ( $class, $name ) = @_; |
238 | my $prefix = &class2prefix($class); |
239 | $name = "$prefix/$name" if $prefix; |
240 | return $name; |
241 | } |
242 | |
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243 | =head2 request($uri) |
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244 | |
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245 | Returns an L<HTTP::Request> object for a uri. |
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246 | |
247 | =cut |
248 | |
249 | sub request { |
250 | my $request = shift; |
251 | unless ( ref $request ) { |
a88c7ec8 |
252 | if ( $request =~ m/^http/i ) { |
f4c0f6f7 |
253 | $request = URI->new($request); |
4d60aa90 |
254 | } |
255 | else { |
f4c0f6f7 |
256 | $request = URI->new( 'http://localhost' . $request ); |
4d60aa90 |
257 | } |
258 | } |
259 | unless ( ref $request eq 'HTTP::Request' ) { |
260 | $request = HTTP::Request->new( 'GET', $request ); |
261 | } |
4d60aa90 |
262 | return $request; |
263 | } |
264 | |
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265 | =head2 ensure_class_loaded($class_name, \%opts) |
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266 | |
267 | Loads the class unless it already has been loaded. |
268 | |
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269 | If $opts{ignore_loaded} is true always tries the require whether the package |
270 | already exists or not. Only pass this if you're either (a) sure you know the |
271 | file exists on disk or (b) have code to catch the file not found exception |
272 | that will result if it doesn't. |
273 | |
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274 | =cut |
275 | |
276 | sub ensure_class_loaded { |
277 | my $class = shift; |
d06051f7 |
278 | my $opts = shift; |
d9183506 |
279 | |
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280 | croak "Malformed class Name $class" |
281 | if $class =~ m/(?:\b\:\b|\:{3,})/; |
282 | |
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283 | croak "Malformed class Name $class" |
284 | if $class =~ m/[^\w:]/; |
285 | |
286 | croak "ensure_class_loaded should be given a classname, not a filename ($class)" |
287 | if $class =~ m/\.pm$/; |
288 | |
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289 | # $opts->{ignore_loaded} can be set to true, and this causes the class to be required, even |
290 | # if it already has symbol table entries. This is to support things like Schema::Loader, which |
291 | # part-generate classes in memory, but then also load some of their contents from disk. |
d06051f7 |
292 | return if !$opts->{ ignore_loaded } |
fbedfd6b |
293 | && Class::MOP::is_class_loaded($class); # if a symbol entry exists we don't load again |
294 | |
d9183506 |
295 | # this hack is so we don't overwrite $@ if the load did not generate an error |
296 | my $error; |
297 | { |
298 | local $@; |
7a1958eb |
299 | my $file = $class . '.pm'; |
300 | $file =~ s{::}{/}g; |
301 | eval { CORE::require($file) }; |
d9183506 |
302 | $error = $@; |
303 | } |
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304 | |
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305 | die $error if $error; |
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306 | |
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307 | warn "require $class was successful but the package is not defined." |
fbedfd6b |
308 | unless Class::MOP::is_class_loaded($class); |
6bfff75e |
309 | |
310 | return 1; |
d9183506 |
311 | } |
312 | |
358e1592 |
313 | =head2 merge_hashes($hashref, $hashref) |
314 | |
315 | Base code to recursively merge two hashes together with right-hand precedence. |
316 | |
317 | =cut |
318 | |
319 | sub merge_hashes { |
320 | my ( $lefthash, $righthash ) = @_; |
321 | |
322 | return $lefthash unless defined $righthash; |
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323 | |
358e1592 |
324 | my %merged = %$lefthash; |
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325 | for my $key ( keys %$righthash ) { |
326 | my $right_ref = ( ref $righthash->{ $key } || '' ) eq 'HASH'; |
327 | my $left_ref = ( ( exists $lefthash->{ $key } && ref $lefthash->{ $key } ) || '' ) eq 'HASH'; |
328 | if( $right_ref and $left_ref ) { |
358e1592 |
329 | $merged{ $key } = merge_hashes( |
330 | $lefthash->{ $key }, $righthash->{ $key } |
0ef447d8 |
331 | ); |
358e1592 |
332 | } |
333 | else { |
334 | $merged{ $key } = $righthash->{ $key }; |
0ef447d8 |
335 | } |
358e1592 |
336 | } |
b0ad47c1 |
337 | |
358e1592 |
338 | return \%merged; |
339 | } |
340 | |
cb69249e |
341 | =head2 env_value($class, $key) |
342 | |
343 | Checks for and returns an environment value. For instance, if $key is |
344 | 'home', then this method will check for and return the first value it finds, |
345 | looking at $ENV{MYAPP_HOME} and $ENV{CATALYST_HOME}. |
346 | |
347 | =cut |
348 | |
349 | sub env_value { |
350 | my ( $class, $key ) = @_; |
351 | |
352 | $key = uc($key); |
353 | my @prefixes = ( class2env($class), 'CATALYST' ); |
354 | |
355 | for my $prefix (@prefixes) { |
356 | if ( defined( my $value = $ENV{"${prefix}_${key}"} ) ) { |
357 | return $value; |
358 | } |
359 | } |
360 | |
361 | return; |
362 | } |
d9183506 |
363 | |
39fc2ce1 |
364 | =head2 term_width |
365 | |
366 | Try to guess terminal width to use with formatting of debug output |
367 | |
368 | All you need to get this work, is: |
369 | |
370 | 1) Install Term::Size::Any, or |
371 | |
b0ad47c1 |
372 | 2) Export $COLUMNS from your shell. |
39fc2ce1 |
373 | |
374 | (Warning to bash users: 'echo $COLUMNS' may be showing you the bash |
b0ad47c1 |
375 | variable, not $ENV{COLUMNS}. 'export COLUMNS=$COLUMNS' and you should see |
39fc2ce1 |
376 | that 'env' now lists COLUMNS.) |
377 | |
378 | As last resort, default value of 80 chars will be used. |
379 | |
380 | =cut |
381 | |
382 | my $_term_width; |
383 | |
384 | sub term_width { |
385 | return $_term_width if $_term_width; |
386 | |
387 | my $width = eval ' |
388 | use Term::Size::Any; |
389 | my ($columns, $rows) = Term::Size::Any::chars; |
390 | return $columns; |
391 | '; |
392 | |
393 | if ($@) { |
394 | $width = $ENV{COLUMNS} |
395 | if exists($ENV{COLUMNS}) |
396 | && $ENV{COLUMNS} =~ m/^\d+$/; |
397 | } |
398 | |
399 | $width = 80 unless ($width && $width >= 80); |
400 | return $_term_width = $width; |
401 | } |
402 | |
17b3d800 |
403 | |
404 | =head2 resolve_namespace |
405 | |
406 | Method which adds the namespace for plugins and actions. |
407 | |
408 | __PACKAGE__->setup(qw(MyPlugin)); |
196932de |
409 | |
17b3d800 |
410 | # will load Catalyst::Plugin::MyPlugin |
411 | |
412 | =cut |
413 | |
414 | |
415 | sub resolve_namespace { |
5d8129e9 |
416 | my $appnamespace = shift; |
17b3d800 |
417 | my $namespace = shift; |
418 | my @classes = @_; |
196932de |
419 | return String::RewritePrefix->rewrite({ |
420 | q[] => qq[${namespace}::], |
421 | q[+] => q[], |
422 | (defined $appnamespace |
423 | ? (q[~] => qq[${appnamespace}::]) |
424 | : () |
425 | ), |
426 | }, @classes); |
17b3d800 |
427 | } |
428 | |
429 | |
2f381252 |
430 | =head1 AUTHORS |
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431 | |
2f381252 |
432 | Catalyst Contributors, see Catalyst.pm |
f05af9ba |
433 | |
434 | =head1 COPYRIGHT |
435 | |
536bee89 |
436 | This library is free software. You can redistribute it and/or modify it under |
f05af9ba |
437 | the same terms as Perl itself. |
438 | |
439 | =cut |
440 | |
441 | 1; |