X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FCatalyst%2FScriptRunner.pm;h=7619e615823da5c5ca606e7b679560dfc8a1eeb3;hb=ca5d34dfc295012a749a8454d2b213580e03d55c;hp=ee2b1c13f74595b267784ae2de3fa44aea364c0c;hpb=bb48c5566ee0170fd913574d2393f381d214f86c;p=catagits%2FCatalyst-Runtime.git

diff --git a/lib/Catalyst/ScriptRunner.pm b/lib/Catalyst/ScriptRunner.pm
index ee2b1c1..7619e61 100644
--- a/lib/Catalyst/ScriptRunner.pm
+++ b/lib/Catalyst/ScriptRunner.pm
@@ -3,24 +3,52 @@ use Moose;
 use FindBin;
 use lib;
 use File::Spec;
-use namespace::autoclean;
+use Class::Load qw/ load_first_existing_class load_optional_class /;
+use namespace::autoclean -also => 'subclass_with_traits';
+use Try::Tiny;
+
+sub find_script_class {
+    my ($self, $app, $script) = @_;
+    return load_first_existing_class("${app}::Script::${script}", "Catalyst::Script::$script");
+}
+
+sub find_script_traits {
+    my ($self, @try) = @_;
+
+    return grep { load_optional_class($_) } @try;
+}
+
+sub subclass_with_traits {
+    my ($base, @traits) = @_;
+
+    my $meta = Class::MOP::class_of($base)->create_anon_class(
+        superclasses => [ $base   ],
+        roles        => [ @traits ],
+        cache        => 1,
+    );
+    $meta->add_method(meta => sub { $meta });
+
+    return $meta->name;
+}
 
 sub run {
-    my ($self, $class, $scriptclass, %args) = @_;
-    my $classtoload = "${class}::Script::$scriptclass";
+    my ($self, $appclass, $scriptclass) = @_;
 
     lib->import(File::Spec->catdir($FindBin::Bin, '..', 'lib'));
 
-    unless ( eval { Class::MOP::load_class($classtoload) } ) {
-        warn("Could not load $classtoload - falling back to Catalyst::Script::$scriptclass : $@\n")
-            if $@ !~ /Can't locate/;
-        $classtoload = "Catalyst::Script::$scriptclass";
-        Class::MOP::load_class($classtoload);
-    }
-    $classtoload->new_with_options( application_name => $class, %args )->run;
+    my $class = $self->find_script_class($appclass, $scriptclass);
+
+    my @possible_traits = ("${appclass}::TraitFor::Script::${scriptclass}", "${appclass}::TraitFor::Script");
+    my @traits = $self->find_script_traits(@possible_traits);
+
+    $class = subclass_with_traits($class, @traits)
+        if @traits;
+
+    $class->new_with_options( application_name => $appclass )->run;
 }
 
 __PACKAGE__->meta->make_immutable;
+1;
 
 =head1 NAME
 
@@ -34,8 +62,23 @@ Catalyst::ScriptRunner - The Catalyst Framework script runner
 
 =head1 DESCRIPTION
 
-This class is responsible for running scripts, either in the application specific namespace
-(e.g. C<MyApp::Script::Server>), or the Catalyst namespace (e.g. C<Catalyst::Script::Server>)
+This class is responsible for loading and running scripts, either in the
+application specific namespace
+(e.g. C<MyApp::Script::Server>), or the Catalyst namespace (e.g. C<Catalyst::Script::Server>).
+
+If your application contains a custom script, then it will be used in preference to the generic
+script, and is expected to sub-class the standard script.
+
+=head1 TRAIT LOADING
+
+Catalyst will automatically load and apply roles to the scripts in your
+application.
+
+C<MyApp::TraitFor::Script> will be loaded if present, and will be applied to B<ALL>
+scripts.
+
+C<MyApp::TraitFor::Script::XXXX> will be loaded (if present) and for script
+individually.
 
 =head1 METHODS
 
@@ -44,6 +87,16 @@ This class is responsible for running scripts, either in the application specifi
 Called with two parameters, the application class (e.g. MyApp)
 and the script class, (i.e. one of Server/FastCGI/CGI/Create/Test)
 
+=head2 find_script_class ($appname, $script_name)
+
+Finds and loads the class for the script, trying the application specific
+script first, and falling back to the generic script. Returns the script
+which was loaded.
+
+=head2 find_script_traits ($appname, @try)
+
+Finds and loads a set of traits. Returns the list of traits which were loaded.
+
 =head1 AUTHORS
 
 Catalyst Contributors, see Catalyst.pm