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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 part of dart.io; | 5 part of dart.io; |
6 | 6 |
7 | 7 |
8 /** | 8 /** |
9 * A Mime Multipart class representing each part parsed by | 9 * A Mime Multipart class representing each part parsed by |
10 * [MimeMultipartTransformer]. The data is streamed in as it become available. | 10 * [MimeMultipartTransformer]. The data is streamed in as it become available. |
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94 void _resumeStream() { | 94 void _resumeStream() { |
95 _subscription.resume(); | 95 _subscription.resume(); |
96 } | 96 } |
97 | 97 |
98 void _pauseStream() { | 98 void _pauseStream() { |
99 _subscription.pause(); | 99 _subscription.pause(); |
100 } | 100 } |
101 | 101 |
102 Stream<MimeMultipart> bind(Stream<List<int>> stream) { | 102 Stream<MimeMultipart> bind(Stream<List<int>> stream) { |
103 _controller = new StreamController( | 103 _controller = new StreamController( |
104 onPause: _pauseStream, | 104 onPause: () { |
105 onResume:_resumeStream, | 105 _pauseStream(); |
106 onCancel: () { | 106 }, |
107 _subscription.cancel(); | 107 onResume: () { |
| 108 _resumeStream(); |
108 }, | 109 }, |
109 onListen: () { | 110 onListen: () { |
110 _subscription = stream.listen( | 111 _subscription = stream.listen( |
111 (data) { | 112 (data) { |
112 assert(_buffer == null); | 113 assert(_buffer == null); |
113 _pauseStream(); | 114 _pauseStream(); |
114 _buffer = data; | 115 _buffer = data; |
115 _index = 0; | 116 _index = 0; |
116 _parse(); | 117 _parse(); |
117 }, | 118 }, |
118 onDone: () { | 119 onDone: () { |
119 if (_state != _DONE) { | 120 if (_state != _DONE) { |
120 _controller.addError( | 121 _controller.addError( |
121 new MimeMultipartException("Bad multipart ending")); | 122 new MimeMultipartException("Bad multipart ending")); |
122 } | 123 } |
123 _controller.close(); | 124 _controller.close(); |
124 }, | 125 }, |
125 onError: (error) { | 126 onError: (error) { |
126 _controller.addError(error); | 127 _controller.addError(error); |
127 }); | 128 }); |
| 129 }, |
| 130 onCancel: () { |
| 131 _subscription.cancel(); |
128 }); | 132 }); |
129 return _controller.stream; | 133 return _controller.stream; |
130 } | 134 } |
131 | 135 |
132 void _parse() { | 136 void _parse() { |
133 // Number of boundary bytes to artificially place before the supplied data. | 137 // Number of boundary bytes to artificially place before the supplied data. |
134 int boundaryPrefix = 0; | 138 int boundaryPrefix = 0; |
135 // Position where content starts. Will be null if no known content | 139 // Position where content starts. Will be null if no known content |
136 // start exists. Will be negative of the content starts in the | 140 // start exists. Will be negative of the content starts in the |
137 // boundary prefix. Will be zero or position if the content starts | 141 // boundary prefix. Will be zero or position if the content starts |
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394 } | 398 } |
395 } | 399 } |
396 } | 400 } |
397 | 401 |
398 | 402 |
399 class MimeMultipartException implements Exception { | 403 class MimeMultipartException implements Exception { |
400 const MimeMultipartException([String this.message = ""]); | 404 const MimeMultipartException([String this.message = ""]); |
401 String toString() => "MimeMultipartException: $message"; | 405 String toString() => "MimeMultipartException: $message"; |
402 final String message; | 406 final String message; |
403 } | 407 } |
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