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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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