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| 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 | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 part of dart.io; | |
| 6 | |
| 7 class _Directory extends FileSystemEntity implements Directory { | |
| 8 final String path; | |
| 9 | |
| 10 _Directory(this.path) { | |
| 11 if (path is! String) { | |
| 12 throw new ArgumentError('${Error.safeToString(path)} ' | |
| 13 'is not a String'); | |
| 14 } | |
| 15 } | |
| 16 | |
| 17 external static _current(); | |
| 18 external static _setCurrent(path); | |
| 19 external static _createTemp(String path); | |
| 20 external static String _systemTemp(); | |
| 21 external static _exists(String path); | |
| 22 external static _create(String path); | |
| 23 external static _deleteNative(String path, bool recursive); | |
| 24 external static _rename(String path, String newPath); | |
| 25 external static void _fillWithDirectoryListing( | |
| 26 List<FileSystemEntity> list, String path, bool recursive, | |
| 27 bool followLinks); | |
| 28 | |
| 29 static Directory get current { | |
| 30 var result = _current(); | |
| 31 if (result is OSError) { | |
| 32 throw new FileSystemException( | |
| 33 "Getting current working directory failed", "", result); | |
| 34 } | |
| 35 return new _Directory(result); | |
| 36 } | |
| 37 | |
| 38 static void set current(path) { | |
| 39 if (path is Directory) path = path.path; | |
| 40 var result = _setCurrent(path); | |
| 41 if (result is ArgumentError) throw result; | |
| 42 if (result is OSError) { | |
| 43 throw new FileSystemException( | |
| 44 "Setting current working directory failed", path, result); | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 Uri get uri { | |
| 49 return new Uri.directory(path); | |
| 50 } | |
| 51 | |
| 52 Future<bool> exists() { | |
| 53 return _IOService._dispatch(_DIRECTORY_EXISTS, [path]).then((response) { | |
| 54 if (_isErrorResponse(response)) { | |
| 55 throw _exceptionOrErrorFromResponse(response, "Exists failed"); | |
| 56 } | |
| 57 return response == 1; | |
| 58 }); | |
| 59 } | |
| 60 | |
| 61 bool existsSync() { | |
| 62 var result = _exists(path); | |
| 63 if (result is OSError) { | |
| 64 throw new FileSystemException("Exists failed", path, result); | |
| 65 } | |
| 66 return (result == 1); | |
| 67 } | |
| 68 | |
| 69 Directory get absolute => new Directory(_absolutePath); | |
| 70 | |
| 71 Future<FileStat> stat() => FileStat.stat(path); | |
| 72 | |
| 73 FileStat statSync() => FileStat.statSync(path); | |
| 74 | |
| 75 // Compute the index of the first directory in the list that exists. If | |
| 76 // none of the directories exist dirsToCreate.length is returned. | |
| 77 Future<int> _computeExistingIndex(List dirsToCreate) { | |
| 78 var future; | |
| 79 var notFound = dirsToCreate.length; | |
| 80 for (var i = 0; i < dirsToCreate.length; i++) { | |
| 81 if (future == null) { | |
| 82 future = dirsToCreate[i].exists().then((e) => e ? i : notFound); | |
| 83 } else { | |
| 84 future = future.then((index) { | |
| 85 if (index != notFound) { | |
| 86 return new Future.value(index); | |
| 87 } | |
| 88 return dirsToCreate[i].exists().then((e) => e ? i : notFound); | |
| 89 }); | |
| 90 } | |
| 91 } | |
| 92 if (future == null) { | |
| 93 return new Future.value(notFound); | |
| 94 } else { | |
| 95 return future; | |
| 96 } | |
| 97 } | |
| 98 | |
| 99 Future<Directory> create({bool recursive: false}) { | |
| 100 if (recursive) { | |
| 101 return exists().then((exists) { | |
| 102 if (exists) return this; | |
| 103 if (path != parent.path) { | |
| 104 return parent.create(recursive: true).then((_) { | |
| 105 return create(); | |
| 106 }); | |
| 107 } else { | |
| 108 return create(); | |
| 109 } | |
| 110 }); | |
| 111 } else { | |
| 112 return _IOService._dispatch(_DIRECTORY_CREATE, [path]).then((response) { | |
| 113 if (_isErrorResponse(response)) { | |
| 114 throw _exceptionOrErrorFromResponse(response, "Creation failed"); | |
| 115 } | |
| 116 return this; | |
| 117 }); | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 void createSync({bool recursive: false}) { | |
| 122 if (recursive) { | |
| 123 if (existsSync()) return; | |
| 124 if (path != parent.path) { | |
| 125 parent.createSync(recursive: true); | |
| 126 } | |
| 127 } | |
| 128 var result = _create(path); | |
| 129 if (result is OSError) { | |
| 130 throw new FileSystemException("Creation failed", path, result); | |
| 131 } | |
| 132 } | |
| 133 | |
| 134 static Directory get systemTemp => new Directory(_systemTemp()); | |
| 135 | |
| 136 Future<Directory> createTemp([String prefix]) { | |
| 137 if (prefix == null) prefix = ''; | |
| 138 if (path == '') { | |
| 139 throw new ArgumentError( | |
| 140 "Directory.createTemp called with an empty path. " | |
| 141 "To use the system temp directory, use Directory.systemTemp"); | |
| 142 } | |
| 143 String fullPrefix; | |
| 144 if (path.endsWith('/') || (Platform.isWindows && path.endsWith('\\'))) { | |
| 145 fullPrefix = "$path$prefix"; | |
| 146 } else { | |
| 147 fullPrefix = "$path${Platform.pathSeparator}$prefix"; | |
| 148 } | |
| 149 return _IOService._dispatch(_DIRECTORY_CREATE_TEMP, [fullPrefix]) | |
| 150 .then((response) { | |
| 151 if (_isErrorResponse(response)) { | |
| 152 throw _exceptionOrErrorFromResponse( | |
| 153 response, "Creation of temporary directory failed"); | |
| 154 } | |
| 155 return new Directory(response); | |
| 156 }); | |
| 157 } | |
| 158 | |
| 159 Directory createTempSync([String prefix]) { | |
| 160 if (prefix == null) prefix = ''; | |
| 161 if (path == '') { | |
| 162 throw new ArgumentError( | |
| 163 "Directory.createTemp called with an empty path. " | |
| 164 "To use the system temp directory, use Directory.systemTemp"); | |
| 165 } | |
| 166 String fullPrefix; | |
| 167 if (path.endsWith('/') || (Platform.isWindows && path.endsWith('\\'))) { | |
| 168 fullPrefix = "$path$prefix"; | |
| 169 } else { | |
| 170 fullPrefix = "$path${Platform.pathSeparator}$prefix"; | |
| 171 } | |
| 172 var result = _createTemp(fullPrefix); | |
| 173 if (result is OSError) { | |
| 174 throw new FileSystemException("Creation of temporary directory failed", | |
| 175 fullPrefix, | |
| 176 result); | |
| 177 } | |
| 178 return new Directory(result); | |
| 179 } | |
| 180 | |
| 181 Future<Directory> _delete({bool recursive: false}) { | |
| 182 return _IOService._dispatch(_DIRECTORY_DELETE, [path, recursive]) | |
| 183 .then((response) { | |
| 184 if (_isErrorResponse(response)) { | |
| 185 throw _exceptionOrErrorFromResponse(response, "Deletion failed"); | |
| 186 } | |
| 187 return this; | |
| 188 }); | |
| 189 } | |
| 190 | |
| 191 void _deleteSync({bool recursive: false}) { | |
| 192 var result = _deleteNative(path, recursive); | |
| 193 if (result is OSError) { | |
| 194 throw new FileSystemException("Deletion failed", path, result); | |
| 195 } | |
| 196 } | |
| 197 | |
| 198 Future<Directory> rename(String newPath) { | |
| 199 return _IOService._dispatch(_DIRECTORY_RENAME, [path, newPath]) | |
| 200 .then((response) { | |
| 201 if (_isErrorResponse(response)) { | |
| 202 throw _exceptionOrErrorFromResponse(response, "Rename failed"); | |
| 203 } | |
| 204 return new Directory(newPath); | |
| 205 }); | |
| 206 } | |
| 207 | |
| 208 Directory renameSync(String newPath) { | |
| 209 if (newPath is !String) { | |
| 210 throw new ArgumentError(); | |
| 211 } | |
| 212 var result = _rename(path, newPath); | |
| 213 if (result is OSError) { | |
| 214 throw new FileSystemException("Rename failed", path, result); | |
| 215 } | |
| 216 return new Directory(newPath); | |
| 217 } | |
| 218 | |
| 219 Stream<FileSystemEntity> list({bool recursive: false, | |
| 220 bool followLinks: true}) { | |
| 221 return new _AsyncDirectoryLister( | |
| 222 FileSystemEntity._ensureTrailingPathSeparators(path), | |
| 223 recursive, | |
| 224 followLinks).stream; | |
| 225 } | |
| 226 | |
| 227 List<FileSystemEntity> listSync( | |
| 228 {bool recursive: false, bool followLinks: true}) { | |
| 229 if (recursive is! bool || followLinks is! bool) { | |
| 230 throw new ArgumentError(); | |
| 231 } | |
| 232 var result = <FileSystemEntity>[]; | |
| 233 _fillWithDirectoryListing( | |
| 234 result, | |
| 235 FileSystemEntity._ensureTrailingPathSeparators(path), | |
| 236 recursive, | |
| 237 followLinks); | |
| 238 return result; | |
| 239 } | |
| 240 | |
| 241 String toString() => "Directory: '$path'"; | |
| 242 | |
| 243 bool _isErrorResponse(response) => | |
| 244 response is List && response[0] != _SUCCESS_RESPONSE; | |
| 245 | |
| 246 _exceptionOrErrorFromResponse(response, String message) { | |
| 247 assert(_isErrorResponse(response)); | |
| 248 switch (response[_ERROR_RESPONSE_ERROR_TYPE]) { | |
| 249 case _ILLEGAL_ARGUMENT_RESPONSE: | |
| 250 return new ArgumentError(); | |
| 251 case _OSERROR_RESPONSE: | |
| 252 var err = new OSError(response[_OSERROR_RESPONSE_MESSAGE], | |
| 253 response[_OSERROR_RESPONSE_ERROR_CODE]); | |
| 254 return new FileSystemException(message, path, err); | |
| 255 default: | |
| 256 return new Exception("Unknown error"); | |
| 257 } | |
| 258 } | |
| 259 } | |
| 260 | |
| 261 abstract class _AsyncDirectoryListerOps { | |
| 262 external factory _AsyncDirectoryListerOps(int pointer); | |
| 263 | |
| 264 int getPointer(); | |
| 265 } | |
| 266 | |
| 267 class _AsyncDirectoryLister { | |
| 268 static const int LIST_FILE = 0; | |
| 269 static const int LIST_DIRECTORY = 1; | |
| 270 static const int LIST_LINK = 2; | |
| 271 static const int LIST_ERROR = 3; | |
| 272 static const int LIST_DONE = 4; | |
| 273 | |
| 274 static const int RESPONSE_TYPE = 0; | |
| 275 static const int RESPONSE_PATH = 1; | |
| 276 static const int RESPONSE_COMPLETE = 1; | |
| 277 static const int RESPONSE_ERROR = 2; | |
| 278 | |
| 279 final String path; | |
| 280 final bool recursive; | |
| 281 final bool followLinks; | |
| 282 | |
| 283 StreamController controller; | |
| 284 bool canceled = false; | |
| 285 bool nextRunning = false; | |
| 286 bool closed = false; | |
| 287 _AsyncDirectoryListerOps _ops; | |
| 288 Completer closeCompleter = new Completer(); | |
| 289 | |
| 290 _AsyncDirectoryLister(this.path, this.recursive, this.followLinks) { | |
| 291 controller = new StreamController(onListen: onListen, | |
| 292 onResume: onResume, | |
| 293 onCancel: onCancel, | |
| 294 sync: true); | |
| 295 } | |
| 296 | |
| 297 // Calling this function will increase the reference count on the native | |
| 298 // object that implements the async directory lister operations. It should | |
| 299 // only be called to pass the pointer to the IO Service, which will decrement | |
| 300 // the reference count when it is finished with it. | |
| 301 int _pointer() { | |
| 302 return (_ops == null) ? null : _ops.getPointer(); | |
| 303 } | |
| 304 | |
| 305 Stream get stream => controller.stream; | |
| 306 | |
| 307 void onListen() { | |
| 308 _IOService._dispatch(_DIRECTORY_LIST_START, [path, recursive, followLinks]) | |
| 309 .then((response) { | |
| 310 if (response is int) { | |
| 311 _ops = new _AsyncDirectoryListerOps(response); | |
| 312 next(); | |
| 313 } else if (response is Error) { | |
| 314 controller.addError(response, response.stackTrace); | |
| 315 close(); | |
| 316 } else { | |
| 317 error(response); | |
| 318 close(); | |
| 319 } | |
| 320 }); | |
| 321 } | |
| 322 | |
| 323 void onResume() { | |
| 324 if (!nextRunning) { | |
| 325 next(); | |
| 326 } | |
| 327 } | |
| 328 | |
| 329 Future onCancel() { | |
| 330 canceled = true; | |
| 331 // If we are active, but not requesting, close. | |
| 332 if (!nextRunning) { | |
| 333 close(); | |
| 334 } | |
| 335 | |
| 336 return closeCompleter.future; | |
| 337 } | |
| 338 | |
| 339 void next() { | |
| 340 if (canceled) { | |
| 341 close(); | |
| 342 return; | |
| 343 } | |
| 344 if (controller.isPaused || nextRunning) { | |
| 345 return; | |
| 346 } | |
| 347 var pointer = _pointer(); | |
| 348 if (pointer == null) { | |
| 349 return; | |
| 350 } | |
| 351 nextRunning = true; | |
| 352 _IOService._dispatch(_DIRECTORY_LIST_NEXT, [pointer]).then((result) { | |
| 353 nextRunning = false; | |
| 354 if (result is List) { | |
| 355 next(); | |
| 356 assert(result.length % 2 == 0); | |
| 357 for (int i = 0; i < result.length; i++) { | |
| 358 assert(i % 2 == 0); | |
| 359 switch (result[i++]) { | |
| 360 case LIST_FILE: | |
| 361 controller.add(new File(result[i])); | |
| 362 break; | |
| 363 case LIST_DIRECTORY: | |
| 364 controller.add(new Directory(result[i])); | |
| 365 break; | |
| 366 case LIST_LINK: | |
| 367 controller.add(new Link(result[i])); | |
| 368 break; | |
| 369 case LIST_ERROR: | |
| 370 error(result[i]); | |
| 371 break; | |
| 372 case LIST_DONE: | |
| 373 canceled = true; | |
| 374 return; | |
| 375 } | |
| 376 } | |
| 377 } else { | |
| 378 controller.addError(new FileSystemException("Internal error")); | |
| 379 } | |
| 380 }); | |
| 381 } | |
| 382 | |
| 383 void _cleanup() { | |
| 384 controller.close(); | |
| 385 closeCompleter.complete(); | |
| 386 _ops = null; | |
| 387 } | |
| 388 | |
| 389 void close() { | |
| 390 if (closed) { | |
| 391 return; | |
| 392 } | |
| 393 if (nextRunning) { | |
| 394 return; | |
| 395 } | |
| 396 closed = true; | |
| 397 | |
| 398 var pointer = _pointer(); | |
| 399 if (pointer == null) { | |
| 400 _cleanup(); | |
| 401 } else { | |
| 402 _IOService._dispatch(_DIRECTORY_LIST_STOP, [pointer]) | |
| 403 .whenComplete(_cleanup); | |
| 404 } | |
| 405 } | |
| 406 | |
| 407 void error(message) { | |
| 408 var errorType = | |
| 409 message[RESPONSE_ERROR][_ERROR_RESPONSE_ERROR_TYPE]; | |
| 410 if (errorType == _ILLEGAL_ARGUMENT_RESPONSE) { | |
| 411 controller.addError(new ArgumentError()); | |
| 412 } else if (errorType == _OSERROR_RESPONSE) { | |
| 413 var responseError = message[RESPONSE_ERROR]; | |
| 414 var err = new OSError( | |
| 415 responseError[_OSERROR_RESPONSE_MESSAGE], | |
| 416 responseError[_OSERROR_RESPONSE_ERROR_CODE]); | |
| 417 var errorPath = message[RESPONSE_PATH]; | |
| 418 if (errorPath == null) errorPath = path; | |
| 419 controller.addError( | |
| 420 new FileSystemException("Directory listing failed", | |
| 421 errorPath, | |
| 422 err)); | |
| 423 } else { | |
| 424 controller.addError( | |
| 425 new FileSystemException("Internal error")); | |
| 426 } | |
| 427 } | |
| 428 } | |
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Chromium Code Reviews
Issue 2698353003:
unfork DDC's copy of most SDK libraries (Closed)
