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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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