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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | |
jakemac
2016/07/21 21:45:57
nit, 2016
nweiz
2016/07/21 23:07:24
Done.
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2 // for details. All rights reserved. Use of this source code is governed by a | |
3 // BSD-style license that can be found in the LICENSE file. | |
4 | |
5 library shelf_packages_handler.dir_handler; | |
6 | |
7 import 'package:path/path.dart' as p; | |
8 import 'package:shelf/shelf.dart'; | |
9 | |
10 /// A utility handler that mounts a sub-handler beneath a directory name, | |
11 /// wherever that directory name appears in a URL. | |
12 /// | |
13 /// In practice, this is used to mount a [PackagesHandler] underneath | |
14 /// `packages/` directories. | |
15 class DirHandler { | |
16 /// The directory name to look for. | |
17 final String _name; | |
18 | |
19 /// The inner handler to mount. | |
20 final Handler _inner; | |
21 | |
22 DirHandler(this._name, this._inner); | |
23 | |
24 /// The callback for handling a single request. | |
25 call(Request request) { | |
26 var segments = request.url.pathSegments; | |
27 for (var i = 0; i < segments.length; i++) { | |
28 if (segments[i] != _name) continue; | |
29 return _inner(request.change(path: p.url.joinAll(segments.take(i + 1)))); | |
30 } | |
31 | |
32 return new Response.notFound("Not found."); | |
33 } | |
34 } | |
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