Index: lib/shelf_packages_handler.dart |
diff --git a/lib/shelf_packages_handler.dart b/lib/shelf_packages_handler.dart |
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+// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
+// for details. All rights reserved. Use of this source code is governed by a |
+// BSD-style license that can be found in the LICENSE file. |
+ |
+library shelf_packages_handler; |
+ |
+import 'package:shelf/shelf.dart'; |
+import 'package:shelf_static/shelf_static.dart'; |
+import 'package:package_resolver/package_resolver.dart'; |
+import 'package:path/path.dart' as p; |
+ |
+import 'src/async_handler.dart'; |
+import 'src/dir_handler.dart'; |
+import 'src/package_config_handler.dart'; |
+ |
+/// A handler that serves the contents of a virtual packages directory. |
+/// |
+/// This effectively serves `package:${request.url}`. It locates packages using |
+/// the package resolution logic defined by [resolver]. If [resolver] isn't |
+/// passed, it defaults to the current isolate's package resolution logic. |
+/// |
+/// This can only serve assets from `file:` URIs. |
+Handler packagesHandler({PackageResolver resolver}) { |
+ resolver ??= PackageResolver.current; |
+ return new AsyncHandler(resolver.packageRoot.then((packageRoot) { |
+ if (packageRoot != null) { |
+ return createStaticHandler(p.fromUri(packageRoot), |
+ serveFilesOutsidePath: true); |
+ } else { |
+ return new PackageConfigHandler(resolver); |
+ } |
+ })); |
+} |
+ |
+/// A handler that serves virtual `packages/` directories wherever they're |
+/// requested. |
+/// |
+/// This serves the same assets as [packagesHandler] for every URL that contains |
+/// `/packages/`. Otherwise, it returns 404s for all requests. |
+/// |
+/// This is useful for ensuring that `package:` imports work for all entrypoints |
+/// in Dartium. |
+Handler packagesDirHandler({PackageResolver resolver}) => |
+ new DirHandler("packages", packagesHandler(resolver: resolver)); |