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package Sledge::Engine; |
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130421
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use strict; |
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use base qw(Class::Data::Inheritable); |
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6916
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use Scalar::Util qw(blessed); |
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use File::Basename (); |
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use Class::Inspector; |
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use UNIVERSAL::require; |
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use Module::Pluggable::Object; |
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use Carp (); |
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use String::CamelCase qw(camelize); |
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use Sledge::Utils; |
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our $VERSION = '0.04'; |
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our $StaticExtension = '.html'; |
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sub import { |
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my $pkg = shift; |
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return unless $pkg eq 'Sledge::Engine'; |
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my $caller = caller(0); |
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no strict 'refs'; |
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my $engine = 'Sledge::Engine::CGI'; |
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if ($ENV{MOD_PERL}) { |
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my($software, $version) = |
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$ENV{MOD_PERL} =~ /^(\S+)\/(\d+(?:[\.\_]\d+)+)/; |
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if ($version >= 1.24 && $version < 1.90) { |
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$engine = 'Sledge::Engine::Apache::MP13'; |
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*handler = sub ($$) { shift->run(@_); }; |
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} |
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else { |
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Carp::croak("Unsupported mod_perl version: $ENV{MOD_PERL}"); |
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} |
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} |
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$engine->require; |
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push @{"$caller\::ISA"}, $engine; |
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$caller->mk_classdata('ActionMap' => {}); |
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$caller->mk_classdata('ActionMapKeys' => []); |
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$caller->mk_classdata('components' => []); |
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} |
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sub new { |
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my $class = shift; |
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my $self = bless {}, $class; |
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$self; |
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} |
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sub setup { |
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my $pkg = shift; |
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my $pages_class = join '::', $pkg, 'Pages'; |
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$pages_class->use or die $@; |
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my $finder = Module::Pluggable::Object->new( |
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search_path => [$pages_class], |
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require => 1, |
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); |
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$pkg->components([$finder->plugins]); |
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for my $subclass(@{$pkg->components}) { |
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my $methods = Class::Inspector->methods($subclass, 'public'); |
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for my $method(@{$methods}) { |
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if ($method =~ s/^dispatch_//) { |
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$pkg->register($subclass, $method); |
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} |
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} |
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} |
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$pkg->ActionMapKeys([ |
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sort { length($a) <=> length($b) } keys %{$pkg->ActionMap} |
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]); |
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} |
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sub register { |
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my($pkg, $class, $page) = @_; |
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my $prefix = Sledge::Utils::class2prefix($class); |
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my $path = $prefix eq '/' ? "/$page" : "$prefix/$page"; |
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$path =~ s{/index$}{/}; |
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$pkg->ActionMap->{$path} = { |
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class => $class, |
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page => $page, |
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}; |
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} |
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sub lookup { |
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my($self, $path) = @_; |
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$path ||= '/'; |
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$path =~ s{/index$}{/}; |
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my $action; |
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if ($action = $self->ActionMap->{$path}) { |
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return $action; |
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} |
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elsif ($action = $self->lookup_static($path)) { |
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return $action; |
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} |
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# XXX handle arguments. |
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# my $match; |
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# for my $key(@{$self->ActionMapKeys}) { |
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# next unless index($path, $key) >= 0; |
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# if ($path =~ m{^$key}) { |
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# $match = $key; |
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# } |
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# } |
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# return unless $match; |
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# my %action = %{$self->ActionMap->{$match}}; |
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# if (length($path) > length($match)) { |
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# my $args = $path; |
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# $args =~ s{^$match/?}{}; |
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# $action{args} = [split '/', $args]; |
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# } |
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# return \%action; |
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} |
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sub lookup_static { |
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my($self, $path) = @_; |
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my($page, $dir, $suf) = |
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File::Basename::fileparse($path, $StaticExtension); |
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return if index($page, '.') >= 0; |
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$page ||= 'index'; |
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my $class; |
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if ($dir eq '/') { |
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my $appname = ref $self; |
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for my $subclass(qw(Root Index)) { |
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$class = join '::', $appname, 'Pages', $subclass; |
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last if $class->require; |
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} |
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} |
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else { |
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$dir =~ s{^/}{}; |
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$dir =~ s{/$}{}; |
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$class = join '::', |
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ref($self), 'Pages', map { camelize($_) } split '/', $dir; |
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} |
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if ((Class::Inspector->loaded($class) || $class->require) && |
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-e $class->guess_filename($page)) { |
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no strict 'refs'; |
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*{"$class\::dispatch_$page"} = sub {} |
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unless $class->can("dispatch_$page"); |
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my %action = (class => $class, page => $page); |
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$self->ActionMap->{$path} = \%action; |
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return \%action; |
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} |
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} |
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sub run { |
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my $self = shift; |
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unless (blessed $self) { |
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$self = $self->new; |
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} |
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$self->handle_request(@_); |
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} |
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sub handle_request { |
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die "ABSTRACT METHOD!"; |
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} |
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1; |
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__END__ |