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Side by Side Diff: lib/io/string_stream.dart

Issue 11337019: Use patching for dart:io. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 8 years, 1 month ago
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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 // Interface for decoders decoding binary data into string data. The 5 // Interface for decoders decoding binary data into string data. The
6 // decoder keeps track of line breaks during decoding. 6 // decoder keeps track of line breaks during decoding.
7 abstract class _StringDecoder { 7 abstract class _StringDecoder {
8 // Add more binary data to be decoded. The ownership of the buffer 8 // Add more binary data to be decoded. The ownership of the buffer
9 // is transfered to the decoder and the caller most not modify it any more. 9 // is transfered to the decoder and the caller most not modify it any more.
10 int write(List<int> buffer); 10 int write(List<int> buffer);
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54 54
55 class DecoderException implements Exception { 55 class DecoderException implements Exception {
56 const DecoderException([String this.message]); 56 const DecoderException([String this.message]);
57 String toString() => "DecoderException: $message"; 57 String toString() => "DecoderException: $message";
58 final String message; 58 final String message;
59 } 59 }
60 60
61 61
62 // Utility class for decoding UTF-8 from data delivered as a stream of 62 // Utility class for decoding UTF-8 from data delivered as a stream of
63 // bytes. 63 // bytes.
64 class _StringDecoderBase implements _StringDecoder { 64 abstract class _StringDecoderBase implements _StringDecoder {
65 _StringDecoderBase() 65 _StringDecoderBase()
66 : _bufferList = new _BufferList(), 66 : _bufferList = new _BufferList(),
67 _result = new List<int>(), 67 _result = new List<int>(),
68 _lineBreakEnds = new Queue<int>(); 68 _lineBreakEnds = new Queue<int>();
69 69
70 int write(List<int> buffer) { 70 int write(List<int> buffer) {
71 _bufferList.add(buffer); 71 _bufferList.add(buffer);
72 // Decode as many bytes into characters as possible. 72 // Decode as many bytes into characters as possible.
73 while (_bufferList.length > 0) { 73 while (_bufferList.length > 0) {
74 if (!_processNext()) { 74 if (!_processNext()) {
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147 _lineBreakEnds.add(charPos); 147 _lineBreakEnds.add(charPos);
148 _lineBreaks++; 148 _lineBreaks++;
149 } 149 }
150 150
151 void _resetResult() { 151 void _resetResult() {
152 _charOffset += _result.length; 152 _charOffset += _result.length;
153 _result = new List<int>(); 153 _result = new List<int>();
154 _resultOffset = 0; 154 _resultOffset = 0;
155 } 155 }
156 156
157 abstract bool _processNext(); 157 bool _processNext();
158 158
159 _BufferList _bufferList; 159 _BufferList _bufferList;
160 int _resultOffset = 0; 160 int _resultOffset = 0;
161 List<int> _result; 161 List<int> _result;
162 int _lineBreaks = 0; // Number of line breaks in the current list. 162 int _lineBreaks = 0; // Number of line breaks in the current list.
163 // The positions of the line breaks are tracked in terms of absolute 163 // The positions of the line breaks are tracked in terms of absolute
164 // character positions from the begining of the decoded data. 164 // character positions from the begining of the decoded data.
165 Queue<int> _lineBreakEnds; // Character position of known line breaks. 165 Queue<int> _lineBreakEnds; // Character position of known line breaks.
166 int _charOffset = 0; // Character number of the first character in the list. 166 int _charOffset = 0; // Character number of the first character in the list.
167 int _charCount = 0; // Total number of characters decoded. 167 int _charCount = 0; // Total number of characters decoded.
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523 bool _inputClosed = false; // Is the underlying input stream closed? 523 bool _inputClosed = false; // Is the underlying input stream closed?
524 bool _closed = false; // Is this stream closed. 524 bool _closed = false; // Is this stream closed.
525 bool _eof = false; // Has all data been read from the decoder? 525 bool _eof = false; // Has all data been read from the decoder?
526 Timer _scheduledDataCallback; 526 Timer _scheduledDataCallback;
527 Timer _scheduledLineCallback; 527 Timer _scheduledLineCallback;
528 Timer _scheduledCloseCallback; 528 Timer _scheduledCloseCallback;
529 Function _clientDataHandler; 529 Function _clientDataHandler;
530 Function _clientLineHandler; 530 Function _clientLineHandler;
531 Function _clientCloseHandler; 531 Function _clientCloseHandler;
532 } 532 }
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