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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 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 | 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 class _BaseDataInputStream { | 5 class _BaseDataInputStream { |
6 abstract int available(); | 6 abstract int available(); |
7 | 7 |
8 List<int> read([int len]) { | 8 List<int> read([int len]) { |
9 if (_closeCallbackCalled) return null; | 9 if (_closeCallbackCalled) return null; |
10 int bytesToRead = available(); | 10 int bytesToRead = available(); |
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103 _scheduledCloseCallback = null; | 103 _scheduledCloseCallback = null; |
104 if (_clientCloseHandler !== null) _clientCloseHandler(); | 104 if (_clientCloseHandler !== null) _clientCloseHandler(); |
105 } | 105 } |
106 | 106 |
107 // Schedule data callback if there is more data to read. Schedule | 107 // Schedule data callback if there is more data to read. Schedule |
108 // close callback once when all data has been read. Only schedule | 108 // close callback once when all data has been read. Only schedule |
109 // a new callback if the previous one has actually been called. | 109 // a new callback if the previous one has actually been called. |
110 if (!_closeCallbackCalled) { | 110 if (!_closeCallbackCalled) { |
111 if (available() > 0) { | 111 if (available() > 0) { |
112 if (_scheduledDataCallback == null) { | 112 if (_scheduledDataCallback == null) { |
113 _scheduledDataCallback = new Timer(issueDataCallback, 0); | 113 _scheduledDataCallback = new Timer(0, issueDataCallback); |
114 } | 114 } |
115 } else if (_streamMarkedClosed && !_closeCallbackCalled) { | 115 } else if (_streamMarkedClosed && !_closeCallbackCalled) { |
116 _cancelScheduledDataCallback(); | 116 _cancelScheduledDataCallback(); |
117 _close(); | 117 _close(); |
118 _scheduledCloseCallback = new Timer(issueCloseCallback, 0); | 118 _scheduledCloseCallback = new Timer(0, issueCloseCallback); |
119 _closeCallbackCalled = true; | 119 _closeCallbackCalled = true; |
120 } | 120 } |
121 } | 121 } |
122 } | 122 } |
123 | 123 |
124 // When this is set to true the stream is marked closed. When a | 124 // When this is set to true the stream is marked closed. When a |
125 // stream is marked closed no more data can arrive and the value | 125 // stream is marked closed no more data can arrive and the value |
126 // from available is now all remaining data. If this is true and the | 126 // from available is now all remaining data. If this is true and the |
127 // value of available is zero the close handler is called. | 127 // value of available is zero the close handler is called. |
128 bool _streamMarkedClosed = false; | 128 bool _streamMarkedClosed = false; |
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168 input.onData = pipeDataHandler; | 168 input.onData = pipeDataHandler; |
169 output.onNoPendingWrites = null; | 169 output.onNoPendingWrites = null; |
170 }; | 170 }; |
171 | 171 |
172 _inputCloseHandler = input._clientCloseHandler; | 172 _inputCloseHandler = input._clientCloseHandler; |
173 input.onData = pipeDataHandler; | 173 input.onData = pipeDataHandler; |
174 input.onClosed = pipeCloseHandler; | 174 input.onClosed = pipeCloseHandler; |
175 output.onNoPendingWrites = null; | 175 output.onNoPendingWrites = null; |
176 } | 176 } |
177 | 177 |
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