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Side by Side Diff: intl/lib/src/http_request_data_reader.dart

Issue 1400473008: Roll Observatory packages and add a roll script (Closed) Base URL: git@github.com:dart-lang/observatory_pub_packages.git@master
Patch Set: Created 5 years, 2 months ago
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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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 /**
6 * This contains a reader that accesses data using the HttpRequest
7 * facility, and thus works only in the web browser.
8 */
9
10 library http_request_data_reader;
11
12 import 'dart:async';
13 import 'dart:html';
14 import 'intl_helpers.dart';
15
16 class HttpRequestDataReader implements LocaleDataReader {
17
18 /** The base url from which we read the data. */
19 String url;
20 HttpRequestDataReader(this.url);
21
22 Future read(String locale) {
23 // TODO(alanknight): Remove this once it's not necessary for Chrome.
24 // Without it, the tests will be flaky on Chrome. Issue 11834.
25 var someNumber = new DateTime.now().millisecondsSinceEpoch;
26 var request = new HttpRequest();
27 request.timeout = 5000;
28 return _getString('$url$locale.json?cacheBlocker=$someNumber', request)
29 .then((r) => r.responseText);
30 }
31
32 /// Read a string with the given request. This is a stripped down copy
33 /// of HttpRequest getString, but was the simplest way I could find to
34 /// issue a request with a timeout.
35 Future<HttpRequest> _getString(String url, HttpRequest xhr) {
36 var completer = new Completer<HttpRequest>();
37 xhr.open('GET', url, async: true);
38 xhr.onLoad.listen((e) {
39 // Note: file:// URIs have status of 0.
40 if ((xhr.status >= 200 && xhr.status < 300) ||
41 xhr.status == 0 ||
42 xhr.status == 304) {
43 completer.complete(xhr);
44 } else {
45 completer.completeError(e);
46 }
47 });
48
49 xhr.onError.listen(completer.completeError);
50 xhr.send();
51
52 return completer.future;
53 }
54 }
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