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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 /// Helper functionality to make working with IO easier. | 5 /// Helper functionality to make working with IO easier. |
6 library io; | 6 library io; |
7 | 7 |
8 import 'dart:async'; | 8 import 'dart:async'; |
9 import 'dart:io'; | 9 import 'dart:io'; |
10 import 'dart:isolate'; | 10 import 'dart:isolate'; |
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257 | 257 |
258 // Wait a bit and try again. | 258 // Wait a bit and try again. |
259 log.fine("Operation failed, retrying (attempt $attempts)."); | 259 log.fine("Operation failed, retrying (attempt $attempts)."); |
260 return sleep(500).then(makeAttempt); | 260 return sleep(500).then(makeAttempt); |
261 }); | 261 }); |
262 } | 262 } |
263 | 263 |
264 return makeAttempt(null); | 264 return makeAttempt(null); |
265 } | 265 } |
266 | 266 |
267 /// Creates a new symlink at path [symlink] that points to [target]. Returns a | 267 /// Creates a new symlink that creates an alias from [from] to [to]. Returns a |
268 /// [Future] which completes to the path to the symlink file. | 268 /// [Future] which completes to the symlink file (i.e. [to]). |
269 /// | |
270 /// If [relative] is true, creates a symlink with a relative path from the | |
271 /// symlink to the target. Otherwise, uses the [target] path unmodified. | |
272 /// | 269 /// |
273 /// Note that on Windows, only directories may be symlinked to. | 270 /// Note that on Windows, only directories may be symlinked to. |
274 Future<String> createSymlink(String target, String symlink, | 271 Future<String> createSymlink(String from, String to) { |
275 {bool relative: false}) { | 272 log.fine("Creating symlink ($to is a symlink to $from)"); |
276 if (relative) { | |
277 target = path.normalize(path.relative(target, from: path.dirname(symlink))); | |
278 } | |
279 | |
280 log.fine("Creating $symlink pointing to $target"); | |
281 | 273 |
282 var command = 'ln'; | 274 var command = 'ln'; |
283 var args = ['-s', target, symlink]; | 275 var args = ['-s', from, to]; |
284 | 276 |
285 if (Platform.operatingSystem == 'windows') { | 277 if (Platform.operatingSystem == 'windows') { |
286 // Call mklink on Windows to create an NTFS junction point. Only works on | 278 // Call mklink on Windows to create an NTFS junction point. Only works on |
287 // Vista or later. (Junction points are available earlier, but the "mklink" | 279 // Vista or later. (Junction points are available earlier, but the "mklink" |
288 // command is not.) I'm using a junction point (/j) here instead of a soft | 280 // command is not.) I'm using a junction point (/j) here instead of a soft |
289 // link (/d) because the latter requires some privilege shenanigans that | 281 // link (/d) because the latter requires some privilege shenanigans that |
290 // I'm not sure how to specify from the command line. | 282 // I'm not sure how to specify from the command line. |
291 command = 'mklink'; | 283 command = 'mklink'; |
292 args = ['/j', symlink, target]; | 284 args = ['/j', to, from]; |
293 } | 285 } |
294 | 286 |
295 // TODO(rnystrom): Check exit code and output? | 287 // TODO(rnystrom): Check exit code and output? |
296 return runProcess(command, args).then((result) => symlink); | 288 return runProcess(command, args).then((result) => to); |
297 } | 289 } |
298 | 290 |
299 /// Creates a new symlink that creates an alias at [symlink] that points to the | 291 /// Creates a new symlink that creates an alias from the `lib` directory of |
300 /// `lib` directory of package [target]. Returns a [Future] which completes to | 292 /// package [from] to [to]. Returns a [Future] which completes to the symlink |
301 /// the path to the symlink file. If [target] does not have a `lib` directory, | 293 /// file (i.e. [to]). If [from] does not have a `lib` directory, this shows a |
302 /// this shows a warning if appropriate and then does nothing. | 294 /// warning if appropriate and then does nothing. |
303 /// | 295 Future<String> createPackageSymlink(String name, String from, String to, |
304 /// If [relative] is true, creates a symlink with a relative path from the | 296 {bool isSelfLink: false}) { |
305 /// symlink to the target. Otherwise, uses the [target] path unmodified. | |
306 Future<String> createPackageSymlink(String name, String symlink, String target, | |
307 {bool isSelfLink: false, bool relative: false}) { | |
308 return defer(() { | 297 return defer(() { |
309 // See if the package has a "lib" directory. | 298 // See if the package has a "lib" directory. |
310 target = path.join(target, 'lib'); | 299 from = path.join(from, 'lib'); |
311 log.fine("Creating ${isSelfLink ? "self" : ""}link for package '$name'."); | 300 log.fine("Creating ${isSelfLink ? "self" : ""}link for package '$name'."); |
312 if (dirExists(target)) { | 301 if (dirExists(from)) return createSymlink(from, to); |
313 return createSymlink(target, symlink, relative: relative); | |
314 } | |
315 | 302 |
316 // It's OK for the self link (i.e. the root package) to not have a lib | 303 // It's OK for the self link (i.e. the root package) to not have a lib |
317 // directory since it may just be a leaf application that only has | 304 // directory since it may just be a leaf application that only has |
318 // code in bin or web. | 305 // code in bin or web. |
319 if (!isSelfLink) { | 306 if (!isSelfLink) { |
320 log.warning('Warning: Package "$name" does not have a "lib" directory so ' | 307 log.warning('Warning: Package "$name" does not have a "lib" directory so ' |
321 'you will not be able to import any libraries from it.'); | 308 'you will not be able to import any libraries from it.'); |
322 } | 309 } |
323 | 310 |
324 return symlink; | 311 return to; |
325 }); | 312 }); |
326 } | 313 } |
327 | 314 |
328 /// Resolves [target] relative to the location of pub.dart. | 315 /// Resolves [target] relative to the location of pub.dart. |
329 String relativeToPub(String target) { | 316 String relativeToPub(String target) { |
330 var scriptPath = new File(new Options().script).fullPathSync(); | 317 var scriptPath = new File(new Options().script).fullPathSync(); |
331 | 318 |
332 // Walk up until we hit the "util(s)" directory. This lets us figure out where | 319 // Walk up until we hit the "util(s)" directory. This lets us figure out where |
333 // we are if this function is called from pub.dart, or one of the tests, | 320 // we are if this function is called from pub.dart, or one of the tests, |
334 // which also live under "utils", or from the SDK where pub is in "util". | 321 // which also live under "utils", or from the SDK where pub is in "util". |
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873 const PubProcessResult(this.stdout, this.stderr, this.exitCode); | 860 const PubProcessResult(this.stdout, this.stderr, this.exitCode); |
874 | 861 |
875 bool get success => exitCode == 0; | 862 bool get success => exitCode == 0; |
876 } | 863 } |
877 | 864 |
878 /// Gets a [Uri] for [uri], which can either already be one, or be a [String]. | 865 /// Gets a [Uri] for [uri], which can either already be one, or be a [String]. |
879 Uri _getUri(uri) { | 866 Uri _getUri(uri) { |
880 if (uri is Uri) return uri; | 867 if (uri is Uri) return uri; |
881 return Uri.parse(uri); | 868 return Uri.parse(uri); |
882 } | 869 } |
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