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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/; |
f7ac80ef |
9 | use FindBin qw/ $Bin /; |
808db1d6 |
10 | use Class::MOP; |
17b3d800 |
11 | use String::RewritePrefix; |
0f519d62 |
12 | use List::MoreUtils qw/ any /; |
17b3d800 |
13 | |
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14 | use namespace::clean; |
15 | |
f05af9ba |
16 | =head1 NAME |
17 | |
18 | Catalyst::Utils - The Catalyst Utils |
19 | |
20 | =head1 SYNOPSIS |
21 | |
22 | See L<Catalyst>. |
23 | |
24 | =head1 DESCRIPTION |
25 | |
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26 | Catalyst Utilities. |
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27 | |
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28 | =head1 METHODS |
29 | |
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30 | =head2 appprefix($class) |
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31 | |
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32 | MyApp::Foo becomes myapp_foo |
41ca9ba7 |
33 | |
34 | =cut |
35 | |
36 | sub appprefix { |
37 | my $class = shift; |
0ef447d8 |
38 | $class =~ s/::/_/g; |
41ca9ba7 |
39 | $class = lc($class); |
40 | return $class; |
41 | } |
42 | |
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43 | =head2 class2appclass($class); |
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44 | |
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45 | MyApp::Controller::Foo::Bar becomes MyApp |
46 | My::App::Controller::Foo::Bar becomes My::App |
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47 | |
84cf74e7 |
48 | =cut |
49 | |
50 | sub class2appclass { |
51 | my $class = shift || ''; |
52 | my $appname = ''; |
0ef447d8 |
53 | if ( $class =~ /^(.+?)::([MVC]|Model|View|Controller)::.+$/ ) { |
84cf74e7 |
54 | $appname = $1; |
55 | } |
56 | return $appname; |
57 | } |
58 | |
b5ecfcf0 |
59 | =head2 class2classprefix($class); |
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60 | |
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61 | MyApp::Controller::Foo::Bar becomes MyApp::Controller |
62 | My::App::Controller::Foo::Bar becomes My::App::Controller |
2d90477f |
63 | |
2930d610 |
64 | =cut |
65 | |
66 | sub class2classprefix { |
67 | my $class = shift || ''; |
68 | my $prefix; |
0ef447d8 |
69 | if ( $class =~ /^(.+?::([MVC]|Model|View|Controller))::.+$/ ) { |
2930d610 |
70 | $prefix = $1; |
71 | } |
72 | return $prefix; |
73 | } |
74 | |
b5ecfcf0 |
75 | =head2 class2classsuffix($class); |
84cf74e7 |
76 | |
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77 | MyApp::Controller::Foo::Bar becomes Controller::Foo::Bar |
2d90477f |
78 | |
84cf74e7 |
79 | =cut |
80 | |
81 | sub class2classsuffix { |
82 | my $class = shift || ''; |
83 | my $prefix = class2appclass($class) || ''; |
0ef447d8 |
84 | $class =~ s/$prefix\:://; |
84cf74e7 |
85 | return $class; |
86 | } |
87 | |
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88 | =head2 class2env($class); |
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89 | |
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90 | Returns the environment name for class. |
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91 | |
92 | MyApp becomes MYAPP |
93 | My::App becomes MY_APP |
94 | |
95 | =cut |
96 | |
97 | sub class2env { |
98 | my $class = shift || ''; |
0ef447d8 |
99 | $class =~ s/::/_/g; |
3ad654e0 |
100 | return uc($class); |
101 | } |
102 | |
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103 | =head2 class2prefix( $class, $case ); |
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104 | |
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105 | Returns the uri prefix for a class. If case is false the prefix is converted to lowercase. |
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106 | |
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107 | My::App::Controller::Foo::Bar becomes foo/bar |
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108 | |
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109 | =cut |
110 | |
111 | sub class2prefix { |
112 | my $class = shift || ''; |
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113 | my $case = shift || 0; |
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114 | my $prefix; |
0ef447d8 |
115 | if ( $class =~ /^.+?::([MVC]|Model|View|Controller)::(.+)$/ ) { |
e494bd6b |
116 | $prefix = $case ? $2 : lc $2; |
0ef447d8 |
117 | $prefix =~ s{::}{/}g; |
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118 | } |
119 | return $prefix; |
120 | } |
121 | |
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122 | =head2 class2tempdir( $class [, $create ] ); |
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123 | |
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124 | Returns a tempdir for a class. If create is true it will try to create the path. |
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125 | |
126 | My::App becomes /tmp/my/app |
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127 | My::App::Controller::Foo::Bar becomes /tmp/my/app/c/foo/bar |
37a3ac5c |
128 | |
129 | =cut |
130 | |
131 | sub class2tempdir { |
132 | my $class = shift || ''; |
133 | my $create = shift || 0; |
4be535b1 |
134 | my @parts = split '::', lc $class; |
37a3ac5c |
135 | |
136 | my $tmpdir = dir( File::Spec->tmpdir, @parts )->cleanup; |
137 | |
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138 | if ( $create && !-e $tmpdir ) { |
37a3ac5c |
139 | |
140 | eval { $tmpdir->mkpath }; |
141 | |
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142 | if ($@) { |
41a8bf1f |
143 | # don't load Catalyst::Exception as a BEGIN in Utils, |
144 | # because Utils often gets loaded before MyApp.pm, and if |
145 | # Catalyst::Exception is loaded before MyApp.pm, it does |
146 | # not honor setting |
147 | # $Catalyst::Exception::CATALYST_EXCEPTION_CLASS in |
148 | # MyApp.pm |
149 | require Catalyst::Exception; |
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150 | Catalyst::Exception->throw( |
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151 | message => qq/Couldn't create tmpdir '$tmpdir', "$@"/ ); |
37a3ac5c |
152 | } |
153 | } |
154 | |
155 | return $tmpdir->stringify; |
156 | } |
157 | |
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158 | =head2 dist_indicator_file_list |
159 | |
160 | Returns a list of files which can be tested to check if you're inside a checkout |
161 | |
162 | =cut |
163 | |
164 | sub dist_indicator_file_list { |
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165 | qw/ Makefile.PL Build.PL dist.ini /; |
0f519d62 |
166 | } |
167 | |
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168 | =head2 home($class) |
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169 | |
170 | Returns home directory for given class. |
171 | |
03fb1bee |
172 | Note that the class must be loaded for the home directory to be found using this function. |
173 | |
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174 | =cut |
175 | |
176 | sub home { |
51f412bd |
177 | my $class = shift; |
178 | |
179 | # make an $INC{ $key } style string from the class name |
180 | (my $file = "$class.pm") =~ s{::}{/}g; |
181 | |
182 | if ( my $inc_entry = $INC{$file} ) { |
51452916 |
183 | { |
51f412bd |
184 | # look for an uninstalled Catalyst app |
185 | |
186 | # find the @INC entry in which $file was found |
187 | (my $path = $inc_entry) =~ s/$file$//; |
03fb1bee |
188 | my $home = find_home_unloaded_in_checkout($path); |
189 | return $home if $home; |
51452916 |
190 | } |
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191 | |
51f412bd |
192 | { |
193 | # look for an installed Catalyst app |
194 | |
195 | # trim the .pm off the thing ( Foo/Bar.pm -> Foo/Bar/ ) |
196 | ( my $path = $inc_entry) =~ s/\.pm$//; |
197 | my $home = dir($path)->absolute->cleanup; |
198 | |
199 | # return if if it's a valid directory |
200 | return $home->stringify if -d $home; |
62459712 |
201 | } |
812a28c9 |
202 | } |
51f412bd |
203 | |
204 | # we found nothing |
205 | return 0; |
812a28c9 |
206 | } |
207 | |
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208 | =head2 find_home_unloaded_in_checkout ($path) |
209 | |
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210 | Tries to determine if C<$path> (or $FindBin::Bin if not supplied) |
211 | looks like a checkout. Any leading lib, script or blib components |
40e6e221 |
212 | will be removed, then the directory produced will be checked |
d17ae380 |
213 | for the existence of a C<< dist_indicator_file_list() >>. |
40e6e221 |
214 | |
215 | If one is found, the directory will be returned, otherwise false. |
216 | |
217 | =cut |
218 | |
03fb1bee |
219 | sub find_home_unloaded_in_checkout { |
220 | my ($path) = @_; |
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221 | $path ||= $Bin if !defined $path || !length $path; |
03fb1bee |
222 | my $home = dir($path)->absolute->cleanup; |
223 | |
224 | # pop off /lib and /blib if they're there |
225 | $home = $home->parent while $home =~ /b?lib$/; |
f7ac80ef |
226 | # pop off /script if it's there. |
227 | $home = $home->parent while $home =~ /b?script$/; |
03fb1bee |
228 | |
229 | # only return the dir if it has a Makefile.PL or Build.PL or dist.ini |
230 | if (any { $_ } map { -f $home->file($_) } dist_indicator_file_list()) { |
231 | |
232 | # clean up relative path: |
233 | # MyApp/script/.. -> MyApp |
234 | |
235 | my $dir; |
236 | my @dir_list = $home->dir_list(); |
237 | while (($dir = pop(@dir_list)) && $dir eq '..') { |
238 | $home = dir($home)->parent->parent; |
239 | } |
240 | |
241 | return $home->stringify; |
242 | } |
243 | |
244 | } |
245 | |
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246 | =head2 prefix($class, $name); |
812a28c9 |
247 | |
248 | Returns a prefixed action. |
249 | |
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250 | MyApp::Controller::Foo::Bar, yada becomes foo/bar/yada |
812a28c9 |
251 | |
252 | =cut |
253 | |
254 | sub prefix { |
255 | my ( $class, $name ) = @_; |
256 | my $prefix = &class2prefix($class); |
257 | $name = "$prefix/$name" if $prefix; |
258 | return $name; |
259 | } |
260 | |
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261 | =head2 request($uri) |
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262 | |
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263 | Returns an L<HTTP::Request> object for a uri. |
4d60aa90 |
264 | |
265 | =cut |
266 | |
267 | sub request { |
268 | my $request = shift; |
269 | unless ( ref $request ) { |
a88c7ec8 |
270 | if ( $request =~ m/^http/i ) { |
f4c0f6f7 |
271 | $request = URI->new($request); |
4d60aa90 |
272 | } |
273 | else { |
f4c0f6f7 |
274 | $request = URI->new( 'http://localhost' . $request ); |
4d60aa90 |
275 | } |
276 | } |
277 | unless ( ref $request eq 'HTTP::Request' ) { |
278 | $request = HTTP::Request->new( 'GET', $request ); |
279 | } |
4d60aa90 |
280 | return $request; |
281 | } |
282 | |
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283 | =head2 ensure_class_loaded($class_name, \%opts) |
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284 | |
285 | Loads the class unless it already has been loaded. |
286 | |
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287 | If $opts{ignore_loaded} is true always tries the require whether the package |
288 | already exists or not. Only pass this if you're either (a) sure you know the |
289 | file exists on disk or (b) have code to catch the file not found exception |
290 | that will result if it doesn't. |
291 | |
d9183506 |
292 | =cut |
293 | |
294 | sub ensure_class_loaded { |
295 | my $class = shift; |
d06051f7 |
296 | my $opts = shift; |
d9183506 |
297 | |
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298 | croak "Malformed class Name $class" |
299 | if $class =~ m/(?:\b\:\b|\:{3,})/; |
300 | |
59ede84e |
301 | croak "Malformed class Name $class" |
302 | if $class =~ m/[^\w:]/; |
303 | |
304 | croak "ensure_class_loaded should be given a classname, not a filename ($class)" |
305 | if $class =~ m/\.pm$/; |
306 | |
f55d1491 |
307 | # $opts->{ignore_loaded} can be set to true, and this causes the class to be required, even |
308 | # if it already has symbol table entries. This is to support things like Schema::Loader, which |
309 | # part-generate classes in memory, but then also load some of their contents from disk. |
d06051f7 |
310 | return if !$opts->{ ignore_loaded } |
fbedfd6b |
311 | && Class::MOP::is_class_loaded($class); # if a symbol entry exists we don't load again |
312 | |
d9183506 |
313 | # this hack is so we don't overwrite $@ if the load did not generate an error |
314 | my $error; |
315 | { |
316 | local $@; |
7a1958eb |
317 | my $file = $class . '.pm'; |
318 | $file =~ s{::}{/}g; |
319 | eval { CORE::require($file) }; |
d9183506 |
320 | $error = $@; |
321 | } |
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322 | |
d9183506 |
323 | die $error if $error; |
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324 | |
f55d1491 |
325 | warn "require $class was successful but the package is not defined." |
fbedfd6b |
326 | unless Class::MOP::is_class_loaded($class); |
6bfff75e |
327 | |
328 | return 1; |
d9183506 |
329 | } |
330 | |
358e1592 |
331 | =head2 merge_hashes($hashref, $hashref) |
332 | |
333 | Base code to recursively merge two hashes together with right-hand precedence. |
334 | |
335 | =cut |
336 | |
337 | sub merge_hashes { |
338 | my ( $lefthash, $righthash ) = @_; |
339 | |
340 | return $lefthash unless defined $righthash; |
b0ad47c1 |
341 | |
358e1592 |
342 | my %merged = %$lefthash; |
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343 | for my $key ( keys %$righthash ) { |
344 | my $right_ref = ( ref $righthash->{ $key } || '' ) eq 'HASH'; |
345 | my $left_ref = ( ( exists $lefthash->{ $key } && ref $lefthash->{ $key } ) || '' ) eq 'HASH'; |
346 | if( $right_ref and $left_ref ) { |
358e1592 |
347 | $merged{ $key } = merge_hashes( |
348 | $lefthash->{ $key }, $righthash->{ $key } |
0ef447d8 |
349 | ); |
358e1592 |
350 | } |
351 | else { |
352 | $merged{ $key } = $righthash->{ $key }; |
0ef447d8 |
353 | } |
358e1592 |
354 | } |
b0ad47c1 |
355 | |
358e1592 |
356 | return \%merged; |
357 | } |
358 | |
cb69249e |
359 | =head2 env_value($class, $key) |
360 | |
361 | Checks for and returns an environment value. For instance, if $key is |
362 | 'home', then this method will check for and return the first value it finds, |
363 | looking at $ENV{MYAPP_HOME} and $ENV{CATALYST_HOME}. |
364 | |
365 | =cut |
366 | |
367 | sub env_value { |
368 | my ( $class, $key ) = @_; |
369 | |
370 | $key = uc($key); |
371 | my @prefixes = ( class2env($class), 'CATALYST' ); |
372 | |
373 | for my $prefix (@prefixes) { |
374 | if ( defined( my $value = $ENV{"${prefix}_${key}"} ) ) { |
375 | return $value; |
376 | } |
377 | } |
378 | |
379 | return; |
380 | } |
d9183506 |
381 | |
39fc2ce1 |
382 | =head2 term_width |
383 | |
384 | Try to guess terminal width to use with formatting of debug output |
385 | |
386 | All you need to get this work, is: |
387 | |
388 | 1) Install Term::Size::Any, or |
389 | |
b0ad47c1 |
390 | 2) Export $COLUMNS from your shell. |
39fc2ce1 |
391 | |
392 | (Warning to bash users: 'echo $COLUMNS' may be showing you the bash |
b0ad47c1 |
393 | variable, not $ENV{COLUMNS}. 'export COLUMNS=$COLUMNS' and you should see |
39fc2ce1 |
394 | that 'env' now lists COLUMNS.) |
395 | |
396 | As last resort, default value of 80 chars will be used. |
397 | |
398 | =cut |
399 | |
400 | my $_term_width; |
401 | |
402 | sub term_width { |
403 | return $_term_width if $_term_width; |
404 | |
405 | my $width = eval ' |
406 | use Term::Size::Any; |
407 | my ($columns, $rows) = Term::Size::Any::chars; |
408 | return $columns; |
409 | '; |
410 | |
411 | if ($@) { |
412 | $width = $ENV{COLUMNS} |
413 | if exists($ENV{COLUMNS}) |
414 | && $ENV{COLUMNS} =~ m/^\d+$/; |
415 | } |
416 | |
417 | $width = 80 unless ($width && $width >= 80); |
418 | return $_term_width = $width; |
419 | } |
420 | |
17b3d800 |
421 | |
422 | =head2 resolve_namespace |
423 | |
424 | Method which adds the namespace for plugins and actions. |
425 | |
426 | __PACKAGE__->setup(qw(MyPlugin)); |
196932de |
427 | |
17b3d800 |
428 | # will load Catalyst::Plugin::MyPlugin |
429 | |
430 | =cut |
431 | |
432 | |
433 | sub resolve_namespace { |
5d8129e9 |
434 | my $appnamespace = shift; |
17b3d800 |
435 | my $namespace = shift; |
436 | my @classes = @_; |
196932de |
437 | return String::RewritePrefix->rewrite({ |
438 | q[] => qq[${namespace}::], |
439 | q[+] => q[], |
440 | (defined $appnamespace |
441 | ? (q[~] => qq[${appnamespace}::]) |
442 | : () |
443 | ), |
444 | }, @classes); |
17b3d800 |
445 | } |
446 | |
447 | |
2f381252 |
448 | =head1 AUTHORS |
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449 | |
2f381252 |
450 | Catalyst Contributors, see Catalyst.pm |
f05af9ba |
451 | |
452 | =head1 COPYRIGHT |
453 | |
536bee89 |
454 | This library is free software. You can redistribute it and/or modify it under |
f05af9ba |
455 | the same terms as Perl itself. |
456 | |
457 | =cut |
458 | |
459 | 1; |