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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 part of dart.io; | 5 part of dart.io; |
6 | 6 |
7 /** | 7 /** |
8 * Helper class to wrap a [StreamConsumer<List<int>, T>] and provide utility | 8 * Helper class to wrap a [StreamConsumer<List<int>, T>] and provide |
9 * functions for writing to the StreamConsumer directly. The [IOSink] | 9 * utility functions for writing to the StreamConsumer directly. The |
10 * buffers the input given by [add] and [addString] and will delay a [consume] | 10 * [IOSink] buffers the input given by [write], [writeAll], [writeln], |
11 * or [addStream] until the buffer is flushed. | 11 * [writeCharCode] and [writeBytes] and will delay a [consume] or |
12 * [addStream] until the buffer is flushed. | |
12 * | 13 * |
13 * When the [IOSink] is bound to a stream (through either [consume] | 14 * When the [IOSink] is bound to a stream (through either [consume] |
14 * or [addStream]) any call to the [IOSink] will throw a | 15 * or [addStream]) any call to the [IOSink] will throw a |
15 * [StateError]. | 16 * [StateError]. |
16 */ | 17 */ |
17 abstract class IOSink<T> implements StreamConsumer<List<int>, T> { | 18 abstract class IOSink<T> implements StreamConsumer<List<int>, T>, StringSink { |
18 factory IOSink(StreamConsumer<List<int>, T> target) | 19 factory IOSink(StreamConsumer<List<int>, T> target, Encoding encoding) |
nweiz
2013/03/06 20:31:51
It looks like you're almost always initializing IO
Søren Gjesse
2013/03/07 16:28:47
Changed encoding to be optional with a default val
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19 => new _IOSinkImpl(target); | 20 => new _IOSinkImpl(target, encoding); |
21 | |
22 Encoding encoding; | |
nweiz
2013/03/06 20:31:51
Either mention here or in the http documentation t
Søren Gjesse
2013/03/07 16:28:47
Added documentation to IOSink, HttpClientRequest a
| |
23 | |
24 void writeBytes(List<int> data); | |
25 | |
26 Future<T> writeStream(Stream<List<int>> stream) => addStream(stream); | |
20 | 27 |
21 /** | 28 /** |
22 * Provide functionality for piping to the [IOSink]. | 29 * Provide functionality for piping to the [IOSink]. |
23 */ | 30 */ |
24 Future<T> consume(Stream<List<int>> stream); | 31 Future<T> consume(Stream<List<int>> stream); |
25 | 32 |
26 /** | 33 /** |
27 * Like [consume], but will not close the target when done. | 34 * Like [consume], but will not close the target when done. |
28 */ | 35 */ |
29 Future<T> addStream(Stream<List<int>> stream); | 36 Future<T> addStream(Stream<List<int>> stream); |
30 | 37 |
31 /** | 38 /** |
32 * Write a list of bytes to the target. | 39 * Write a list of bytes to the target. |
40 * | |
41 * *Deprecated*. Use [writeBytes] instead. | |
33 */ | 42 */ |
43 @deprecated | |
Anders Johnsen
2013/03/07 08:48:44
Can't we just remote them now? They ain't part of
Søren Gjesse
2013/03/07 16:28:47
Done.
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34 void add(List<int> data); | 44 void add(List<int> data); |
35 | 45 |
36 /** | 46 /** |
37 * Write a String to the target. | 47 * Write a String to the target. |
48 * | |
49 * *Deprecated*. Use [write] instead. | |
38 */ | 50 */ |
51 @deprecated | |
39 void addString(String string, [Encoding encoding = Encoding.UTF_8]); | 52 void addString(String string, [Encoding encoding = Encoding.UTF_8]); |
40 | 53 |
41 /** | 54 /** |
42 * Close the target. | 55 * Close the target. |
43 */ | 56 */ |
44 void close(); | 57 void close(); |
45 | 58 |
46 /** | 59 /** |
47 * Get future that will complete when all data has been written to | 60 * Get future that will complete when all data has been written to |
48 * the IOSink and it has been closed. | 61 * the IOSink and it has been closed. |
49 */ | 62 */ |
50 Future<T> get done; | 63 Future<T> get done; |
51 } | 64 } |
52 | 65 |
53 | 66 |
54 class _IOSinkImpl<T> implements IOSink<T> { | 67 class _IOSinkImpl<T> implements IOSink<T> { |
55 final StreamConsumer<List<int>, T> _target; | 68 final StreamConsumer<List<int>, T> _target; |
56 | 69 |
57 StreamController<List<int>> _controllerInstance; | 70 StreamController<List<int>> _controllerInstance; |
58 Future<T> _pipeFuture; | 71 Future<T> _pipeFuture; |
59 StreamSubscription<List<int>> _bindSubscription; | 72 StreamSubscription<List<int>> _bindSubscription; |
60 bool _paused = true; | 73 bool _paused = true; |
74 bool _encodingMutable = true; | |
61 | 75 |
62 _IOSinkImpl(StreamConsumer<List<int>, T> target) : _target = target; | 76 _IOSinkImpl(StreamConsumer<List<int>, T> this._target, Encoding encoding) |
77 : _encoding = encoding; | |
78 | |
79 Encoding _encoding; | |
80 | |
81 Encoding get encoding => _encoding; | |
82 void set encoding(Encoding value) { | |
83 if (!_encodingMutable) { | |
84 throw new StateError("IOSink encoding is not mutable"); | |
85 } | |
86 _encoding = value; | |
87 } | |
88 | |
89 void write(Object obj) { | |
90 // This comment is copied from runtime/lib/string_buffer_patch.dart. | |
91 // TODO(srdjan): The following four lines could be replaced by | |
92 // '$obj', but apparently this is too slow on the Dart VM. | |
93 String string; | |
94 if (obj is String) { | |
95 string = obj; | |
96 } else { | |
97 string = obj.toString(); | |
98 if (string is! String) { | |
99 throw new ArgumentError('toString() did not return a string'); | |
100 } | |
101 } | |
102 if (string.isEmpty) return; | |
103 writeBytes(_encodeString(string, _encoding)); | |
104 } | |
105 | |
106 void writeAll(Iterable objects) { | |
107 for (Object obj in objects) write(obj); | |
108 } | |
109 | |
110 void writeln(Object obj) { | |
111 write(obj); | |
112 write("\n"); | |
113 } | |
114 | |
115 void writeCharCode(int charCode) { | |
116 write(new String.fromCharCode(charCode)); | |
117 } | |
118 | |
119 void writeBytes(List<int> data) { | |
120 if (_isBound) { | |
121 throw new StateError("IOSink is already bound to a stream"); | |
122 } | |
123 _controller.add(data); | |
124 } | |
63 | 125 |
64 Future<T> consume(Stream<List<int>> stream) { | 126 Future<T> consume(Stream<List<int>> stream) { |
65 if (_isBound) { | 127 if (_isBound) { |
66 throw new StateError("IOSink is already bound to a stream"); | 128 throw new StateError("IOSink is already bound to a stream"); |
67 } | 129 } |
68 return _fillFromStream(stream); | 130 return _fillFromStream(stream); |
69 } | 131 } |
70 | 132 |
71 Future<T> addStream(Stream<List<int>> stream) { | 133 Future<T> addStream(Stream<List<int>> stream) { |
72 if (_isBound) { | 134 if (_isBound) { |
73 throw new StateError("IOSink is already bound to a stream"); | 135 throw new StateError("IOSink is already bound to a stream"); |
74 } | 136 } |
75 return _fillFromStream(stream, unbind: true); | 137 return _fillFromStream(stream, unbind: true); |
76 } | 138 } |
77 | 139 |
78 void add(List<int> data) { | 140 void add(List<int> data) => writeBytes(data); |
79 if (_isBound) { | |
80 throw new StateError("IOSink is already bound to a stream"); | |
81 } | |
82 _controller.add(data); | |
83 } | |
84 | 141 |
85 void addString(String string, [Encoding encoding = Encoding.UTF_8]) { | 142 void addString(String string, [Encoding encoding = Encoding.UTF_8]) { |
86 add(_encodeString(string, encoding)); | 143 writeBytes(_encodeString(string, encoding)); |
87 } | 144 } |
88 | 145 |
89 void close() { | 146 void close() { |
90 if (_isBound) { | 147 if (_isBound) { |
91 throw new StateError("IOSink is already bound to a stream"); | 148 throw new StateError("IOSink is already bound to a stream"); |
92 } | 149 } |
93 _controller.close(); | 150 _controller.close(); |
94 } | 151 } |
95 | 152 |
96 Future<T> get done { | 153 Future<T> get done { |
(...skipping 85 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
182 if (unbind) { | 239 if (unbind) { |
183 _pipeFuture | 240 _pipeFuture |
184 .then((_) => completeUnbind(), | 241 .then((_) => completeUnbind(), |
185 onError: (error) => completeUnbind(error)); | 242 onError: (error) => completeUnbind(error)); |
186 return unbindCompleter.future; | 243 return unbindCompleter.future; |
187 } else { | 244 } else { |
188 return _pipeFuture.then((_) => this); | 245 return _pipeFuture.then((_) => this); |
189 } | 246 } |
190 } | 247 } |
191 } | 248 } |
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