Updated some core stuff, cleanups, better errors...

[catagits/Catalyst-Runtime.git] / lib / Catalyst / Utils.pm

package Catalyst::Utils;

use strict;
use attributes ();
use Path::Class;

=head1 NAME

Catalyst::Utils - The Catalyst Utils

=head1 SYNOPSIS

See L<Catalyst>.

=head1 DESCRIPTION

=head1 METHODS

=over 4

=item attrs($coderef)

Returns attributes for coderef in a arrayref

=cut

sub attrs { attributes::get( $_[0] ) || [] }

=item class2appclass($class);

Returns the appclass for class.

    MyApp::C::Foo::Bar becomes MyApp
    My::App::C::Foo::Bar becomes My::App

=cut

sub class2appclass {
    my $class = shift || '';
    my $appname = '';
    if ( $class =~ /^(.*)::([MVC]|Model|View|Controller)?::.*$/ ) {
        $appname = $1;
    }
    return $appname;
}

=item class2classprefix($class);

Returns the classprefix for class.

    MyApp::C::Foo::Bar becomes MyApp::C
    My::App::C::Foo::Bar becomes My::App::C

=cut

sub class2classprefix {
    my $class = shift || '';
    my $prefix;
    if ( $class =~ /^(.*::[MVC]|Model|View|Controller)?::.*$/ ) {
        $prefix = $1;
    }
    return $prefix;
}

=item class2classsuffix($class);

Returns the classsuffix for class.

    MyApp::C::Foo::Bar becomes C::Foo::Bar

=cut

sub class2classsuffix {
    my $class = shift || '';
    my $prefix = class2appclass($class) || '';
    $class =~ s/$prefix\:\://;
    return $class;
}

=item class2prefix($class);

Returns the prefix for class.

    My::App::C::Foo::Bar becomes /foo/bar

=cut

sub class2prefix {
    my $class = shift || '';
    my $prefix;
    if ( $class =~ /^.*::([MVC]|Model|View|Controller)?::(.*)$/ ) {
        $prefix = lc $2;
        $prefix =~ s/\:\:/\//g;
    }
    return $prefix;
}

=item home($class)

Returns home directory for given class.

=cut

sub home {
    my $name = shift;
    $name =~ s/\:\:/\//g;
    my $home = 0;
    if ( my $path = $INC{"$name.pm"} ) {
        $home = file($path)->absolute->dir;
        $name =~ /(\w+)$/;
        my $append = $1;
        my $subdir = dir($home)->subdir($append);
        for ( split '/', $name ) { $home = dir($home)->parent }
        if ( $home =~ /blib$/ ) { $home = dir($home)->parent }
        elsif ( !-f file( $home, 'Makefile.PL' ) ) { $home = $subdir }
    }
    return $home;
}

=item prefix($class, $name);

Returns a prefixed action.

    MyApp::C::Foo::Bar, yada becomes /foo/bar/yada

=cut

sub prefix {
    my ( $class, $name ) = @_;
    my $prefix = &class2prefix($class);
    $name = "$prefix/$name" if $prefix;
    return $name;
}

=item reflect_actions($class);

Returns an arrayref containing all actions of a component class.

=cut

sub reflect_actions {
    my $class   = shift;
    my $actions = [];
    eval '$actions = $class->_action_cache';
    die qq/Couldn't reflect actions of component "$class", "$@"/ if $@;
    return $actions;
}

=back

=head1 AUTHOR

Sebastian Riedel, C<sri@cpan.org>

=head1 COPYRIGHT

This program is free software, you can redistribute it and/or modify it under
the same terms as Perl itself.

=cut

1;