fragment of gitweb code responsible for static assets in PSGI

fragment 1.perl

	if (-d "++GITWEBSTATICDIR++") {
		require Plack::App::URLMap;
		require Plack::App::File;

		my $urlmap = Plack::App::URLMap->new();
		$urlmap->map("/" => $app);
		foreach my $static_url (@stylesheets, $stylesheet, $logo, $favicon, $javascript) {
			next if (!defined $static_url || $static_url eq "");

			(my $static_file = $static_url) =~ s!^.*/!!; # basename
			$static_file = "++GITWEBSTATICDIR++/$static_file";
			$urlmap->map($static_url => Plack::App::File->new(file => $static_file));
		}
		$app = $urlmap->to_app();

	} else {
		require Plack::Middleware::Static;

		$app = Plack::Middleware::Static->wrap($app,
			path => qr{(?:^|/)static/.*\.(?:js|css|png)$},
			root => __DIR__,
			encoding => 'utf-8', # encoding for 'text/plain' files
		);

	}

fragment 2.perl

# it is very similar to run() subroutine, but it would be hard to
# extract common code; note that $*_hook variables can be set only
# for FastCGI, so they are absent here
sub to_psgi_app {
	require CGI::Emulate::PSGI;

	our $CGI = 'CGI';
	our $first_request = 1;

	my $app = CGI::Emulate::PSGI->handler(sub {
		CGI::initialize_globals();
		our $cgi = CGI->new();

		run_request();

		$first_request = 0;
	});
	return $app;
}