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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 | |
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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 |
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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 $appname; |
56 | } |
57 | |
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58 | =head2 class2classprefix($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 |
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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 $class; |
85 | } |
86 | |
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87 | =head2 class2env($class); |
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88 | |
26e73131 |
89 | Returns the environment name for class. |
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90 | |
91 | MyApp becomes MYAPP |
92 | My::App becomes MY_APP |
93 | |
94 | =cut |
95 | |
96 | sub class2env { |
97 | my $class = shift || ''; |
0ef447d8 |
98 | $class =~ s/::/_/g; |
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99 | return uc($class); |
100 | } |
101 | |
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102 | =head2 class2prefix( $class, $case ); |
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103 | |
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104 | Returns the uri prefix for a class. If case is false the prefix is converted to lowercase. |
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105 | |
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106 | My::App::Controller::Foo::Bar becomes foo/bar |
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107 | |
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108 | =cut |
109 | |
110 | sub class2prefix { |
111 | my $class = shift || ''; |
e494bd6b |
112 | my $case = shift || 0; |
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113 | my $prefix; |
0ef447d8 |
114 | if ( $class =~ /^.+?::([MVC]|Model|View|Controller)::(.+)$/ ) { |
e494bd6b |
115 | $prefix = $case ? $2 : lc $2; |
0ef447d8 |
116 | $prefix =~ s{::}{/}g; |
f05af9ba |
117 | } |
118 | return $prefix; |
119 | } |
120 | |
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121 | =head2 class2tempdir( $class [, $create ] ); |
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122 | |
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123 | Returns a tempdir for a class. If create is true it will try to create the path. |
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124 | |
125 | My::App becomes /tmp/my/app |
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126 | My::App::Controller::Foo::Bar becomes /tmp/my/app/c/foo/bar |
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127 | |
128 | =cut |
129 | |
130 | sub class2tempdir { |
131 | my $class = shift || ''; |
132 | my $create = shift || 0; |
4be535b1 |
133 | my @parts = split '::', lc $class; |
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134 | |
135 | my $tmpdir = dir( File::Spec->tmpdir, @parts )->cleanup; |
136 | |
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137 | if ( $create && !-e $tmpdir ) { |
37a3ac5c |
138 | |
139 | eval { $tmpdir->mkpath }; |
140 | |
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141 | if ($@) { |
41a8bf1f |
142 | # don't load Catalyst::Exception as a BEGIN in Utils, |
143 | # because Utils often gets loaded before MyApp.pm, and if |
144 | # Catalyst::Exception is loaded before MyApp.pm, it does |
145 | # not honor setting |
146 | # $Catalyst::Exception::CATALYST_EXCEPTION_CLASS in |
147 | # MyApp.pm |
148 | require Catalyst::Exception; |
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149 | Catalyst::Exception->throw( |
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150 | message => qq/Couldn't create tmpdir '$tmpdir', "$@"/ ); |
37a3ac5c |
151 | } |
152 | } |
153 | |
154 | return $tmpdir->stringify; |
155 | } |
156 | |
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157 | =head2 home($class) |
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158 | |
159 | Returns home directory for given class. |
160 | |
161 | =cut |
162 | |
163 | sub home { |
51f412bd |
164 | my $class = shift; |
165 | |
166 | # make an $INC{ $key } style string from the class name |
167 | (my $file = "$class.pm") =~ s{::}{/}g; |
168 | |
169 | if ( my $inc_entry = $INC{$file} ) { |
51452916 |
170 | { |
51f412bd |
171 | # look for an uninstalled Catalyst app |
172 | |
173 | # find the @INC entry in which $file was found |
174 | (my $path = $inc_entry) =~ s/$file$//; |
2f381252 |
175 | $path ||= cwd() if !defined $path || !length $path; |
51f412bd |
176 | my $home = dir($path)->absolute->cleanup; |
177 | |
178 | # pop off /lib and /blib if they're there |
179 | $home = $home->parent while $home =~ /b?lib$/; |
180 | |
b39b4848 |
181 | # only return the dir if it has a Makefile.PL or Build.PL or dist.ini |
182 | if (-f $home->file("Makefile.PL") or -f $home->file("Build.PL") |
183 | or -f $home->file("dist.ini")) { |
c09c6cd7 |
184 | |
185 | # clean up relative path: |
186 | # MyApp/script/.. -> MyApp |
187 | |
059c085b |
188 | my $dir; |
189 | my @dir_list = $home->dir_list(); |
190 | while (($dir = pop(@dir_list)) && $dir eq '..') { |
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191 | $home = dir($home)->parent->parent; |
192 | } |
193 | |
194 | return $home->stringify; |
195 | } |
51452916 |
196 | } |
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197 | |
51f412bd |
198 | { |
199 | # look for an installed Catalyst app |
200 | |
201 | # trim the .pm off the thing ( Foo/Bar.pm -> Foo/Bar/ ) |
202 | ( my $path = $inc_entry) =~ s/\.pm$//; |
203 | my $home = dir($path)->absolute->cleanup; |
204 | |
205 | # return if if it's a valid directory |
206 | return $home->stringify if -d $home; |
62459712 |
207 | } |
812a28c9 |
208 | } |
51f412bd |
209 | |
210 | # we found nothing |
211 | return 0; |
812a28c9 |
212 | } |
213 | |
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214 | =head2 prefix($class, $name); |
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215 | |
216 | Returns a prefixed action. |
217 | |
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218 | MyApp::Controller::Foo::Bar, yada becomes foo/bar/yada |
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219 | |
220 | =cut |
221 | |
222 | sub prefix { |
223 | my ( $class, $name ) = @_; |
224 | my $prefix = &class2prefix($class); |
225 | $name = "$prefix/$name" if $prefix; |
226 | return $name; |
227 | } |
228 | |
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229 | =head2 request($uri) |
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230 | |
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231 | Returns an L<HTTP::Request> object for a uri. |
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232 | |
233 | =cut |
234 | |
235 | sub request { |
236 | my $request = shift; |
237 | unless ( ref $request ) { |
a88c7ec8 |
238 | if ( $request =~ m/^http/i ) { |
f4c0f6f7 |
239 | $request = URI->new($request); |
4d60aa90 |
240 | } |
241 | else { |
f4c0f6f7 |
242 | $request = URI->new( 'http://localhost' . $request ); |
4d60aa90 |
243 | } |
244 | } |
245 | unless ( ref $request eq 'HTTP::Request' ) { |
246 | $request = HTTP::Request->new( 'GET', $request ); |
247 | } |
4d60aa90 |
248 | return $request; |
249 | } |
250 | |
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251 | =head2 ensure_class_loaded($class_name, \%opts) |
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252 | |
253 | Loads the class unless it already has been loaded. |
254 | |
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255 | If $opts{ignore_loaded} is true always tries the require whether the package |
256 | already exists or not. Only pass this if you're either (a) sure you know the |
257 | file exists on disk or (b) have code to catch the file not found exception |
258 | that will result if it doesn't. |
259 | |
d9183506 |
260 | =cut |
261 | |
262 | sub ensure_class_loaded { |
263 | my $class = shift; |
d06051f7 |
264 | my $opts = shift; |
d9183506 |
265 | |
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266 | croak "Malformed class Name $class" |
267 | if $class =~ m/(?:\b\:\b|\:{3,})/; |
268 | |
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269 | croak "Malformed class Name $class" |
270 | if $class =~ m/[^\w:]/; |
271 | |
272 | croak "ensure_class_loaded should be given a classname, not a filename ($class)" |
273 | if $class =~ m/\.pm$/; |
274 | |
f55d1491 |
275 | # $opts->{ignore_loaded} can be set to true, and this causes the class to be required, even |
276 | # if it already has symbol table entries. This is to support things like Schema::Loader, which |
277 | # part-generate classes in memory, but then also load some of their contents from disk. |
d06051f7 |
278 | return if !$opts->{ ignore_loaded } |
fbedfd6b |
279 | && Class::MOP::is_class_loaded($class); # if a symbol entry exists we don't load again |
280 | |
d9183506 |
281 | # this hack is so we don't overwrite $@ if the load did not generate an error |
282 | my $error; |
283 | { |
284 | local $@; |
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285 | my $file = $class . '.pm'; |
286 | $file =~ s{::}{/}g; |
287 | eval { CORE::require($file) }; |
d9183506 |
288 | $error = $@; |
289 | } |
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290 | |
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291 | die $error if $error; |
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292 | |
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293 | warn "require $class was successful but the package is not defined." |
fbedfd6b |
294 | unless Class::MOP::is_class_loaded($class); |
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295 | |
296 | return 1; |
d9183506 |
297 | } |
298 | |
358e1592 |
299 | =head2 merge_hashes($hashref, $hashref) |
300 | |
301 | Base code to recursively merge two hashes together with right-hand precedence. |
302 | |
303 | =cut |
304 | |
305 | sub merge_hashes { |
306 | my ( $lefthash, $righthash ) = @_; |
307 | |
308 | return $lefthash unless defined $righthash; |
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309 | |
358e1592 |
310 | my %merged = %$lefthash; |
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311 | for my $key ( keys %$righthash ) { |
312 | my $right_ref = ( ref $righthash->{ $key } || '' ) eq 'HASH'; |
313 | my $left_ref = ( ( exists $lefthash->{ $key } && ref $lefthash->{ $key } ) || '' ) eq 'HASH'; |
314 | if( $right_ref and $left_ref ) { |
358e1592 |
315 | $merged{ $key } = merge_hashes( |
316 | $lefthash->{ $key }, $righthash->{ $key } |
0ef447d8 |
317 | ); |
358e1592 |
318 | } |
319 | else { |
320 | $merged{ $key } = $righthash->{ $key }; |
0ef447d8 |
321 | } |
358e1592 |
322 | } |
b0ad47c1 |
323 | |
358e1592 |
324 | return \%merged; |
325 | } |
326 | |
cb69249e |
327 | =head2 env_value($class, $key) |
328 | |
329 | Checks for and returns an environment value. For instance, if $key is |
330 | 'home', then this method will check for and return the first value it finds, |
331 | looking at $ENV{MYAPP_HOME} and $ENV{CATALYST_HOME}. |
332 | |
333 | =cut |
334 | |
335 | sub env_value { |
336 | my ( $class, $key ) = @_; |
337 | |
338 | $key = uc($key); |
339 | my @prefixes = ( class2env($class), 'CATALYST' ); |
340 | |
341 | for my $prefix (@prefixes) { |
342 | if ( defined( my $value = $ENV{"${prefix}_${key}"} ) ) { |
343 | return $value; |
344 | } |
345 | } |
346 | |
347 | return; |
348 | } |
d9183506 |
349 | |
39fc2ce1 |
350 | =head2 term_width |
351 | |
352 | Try to guess terminal width to use with formatting of debug output |
353 | |
354 | All you need to get this work, is: |
355 | |
356 | 1) Install Term::Size::Any, or |
357 | |
b0ad47c1 |
358 | 2) Export $COLUMNS from your shell. |
39fc2ce1 |
359 | |
360 | (Warning to bash users: 'echo $COLUMNS' may be showing you the bash |
b0ad47c1 |
361 | variable, not $ENV{COLUMNS}. 'export COLUMNS=$COLUMNS' and you should see |
39fc2ce1 |
362 | that 'env' now lists COLUMNS.) |
363 | |
364 | As last resort, default value of 80 chars will be used. |
365 | |
366 | =cut |
367 | |
368 | my $_term_width; |
369 | |
370 | sub term_width { |
371 | return $_term_width if $_term_width; |
372 | |
373 | my $width = eval ' |
374 | use Term::Size::Any; |
375 | my ($columns, $rows) = Term::Size::Any::chars; |
376 | return $columns; |
377 | '; |
378 | |
379 | if ($@) { |
380 | $width = $ENV{COLUMNS} |
381 | if exists($ENV{COLUMNS}) |
382 | && $ENV{COLUMNS} =~ m/^\d+$/; |
383 | } |
384 | |
385 | $width = 80 unless ($width && $width >= 80); |
386 | return $_term_width = $width; |
387 | } |
388 | |
17b3d800 |
389 | |
390 | =head2 resolve_namespace |
391 | |
392 | Method which adds the namespace for plugins and actions. |
393 | |
394 | __PACKAGE__->setup(qw(MyPlugin)); |
196932de |
395 | |
17b3d800 |
396 | # will load Catalyst::Plugin::MyPlugin |
397 | |
398 | =cut |
399 | |
400 | |
401 | sub resolve_namespace { |
5d8129e9 |
402 | my $appnamespace = shift; |
17b3d800 |
403 | my $namespace = shift; |
404 | my @classes = @_; |
196932de |
405 | return String::RewritePrefix->rewrite({ |
406 | q[] => qq[${namespace}::], |
407 | q[+] => q[], |
408 | (defined $appnamespace |
409 | ? (q[~] => qq[${appnamespace}::]) |
410 | : () |
411 | ), |
412 | }, @classes); |
17b3d800 |
413 | } |
414 | |
415 | |
2f381252 |
416 | =head1 AUTHORS |
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417 | |
2f381252 |
418 | Catalyst Contributors, see Catalyst.pm |
f05af9ba |
419 | |
420 | =head1 COPYRIGHT |
421 | |
536bee89 |
422 | This library is free software. You can redistribute it and/or modify it under |
f05af9ba |
423 | the same terms as Perl itself. |
424 | |
425 | =cut |
426 | |
427 | 1; |