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1 // Copyright (c) 2016, 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 import 'dart:io'; | |
6 | |
7 import 'package:path/path.dart' as p; | |
8 | |
9 import 'async_package_resolver.dart'; | |
10 import 'package_resolver.dart'; | |
11 import 'sync_package_resolver.dart'; | |
12 import 'utils.dart'; | |
13 | |
14 /// A package resolution strategy based on a package root URI. | |
15 class PackageRootResolver implements SyncPackageResolver { | |
16 final packageConfigMap = null; | |
17 final packageConfigUri = null; | |
18 | |
19 final Uri packageRoot; | |
20 | |
21 PackageResolver get asAsync => new AsyncPackageResolver(this); | |
22 | |
23 String get processArgument => "--package-root=$packageRoot"; | |
24 | |
25 PackageRootResolver(packageRoot) | |
26 : packageRoot = (() { | |
27 packageRoot = asUri(packageRoot, "packageRoot"); | |
28 return packageRoot.pathSegments.last.isEmpty | |
29 ? packageRoot | |
30 : packageRoot.replace( | |
31 pathSegments: packageRoot.pathSegments.toList()..add("")); | |
Bob Nystrom
2016/07/21 18:00:32
This logic pretty much exists elsewhere too. Make
nweiz
2016/07/21 19:42:43
Done.
| |
32 })(); | |
33 | |
34 Uri resolveUri(packageUri) { | |
35 packageUri = asPackageUri(packageUri, "packageUri"); | |
36 | |
37 // Following [Isolate.resolvePackageUri], "package:foo" resolves to null. | |
38 if (packageUri.pathSegments.length == 1) return null; | |
39 return packageRoot.resolve(packageUri.path); | |
40 } | |
41 | |
42 Uri urlFor(String package, [String path]) { | |
43 var result = packageRoot.resolve("$package/"); | |
44 return path == null ? result : result.resolve(path); | |
45 } | |
46 | |
47 Uri packageUriFor(url) { | |
48 var packageRootString = packageRoot.toString(); | |
49 url = asUri(url, "url").toString(); | |
50 if (!p.url.isWithin(packageRootString, url)) return null; | |
51 | |
52 var relative = p.url.relative(url, from: packageRootString); | |
53 if (!relative.contains("/")) relative += "/"; | |
54 return Uri.parse("package:$relative"); | |
55 } | |
56 | |
57 String packagePath(String package) { | |
58 if (packageRoot.scheme != 'file') return null; | |
59 | |
60 var libLink = p.join(p.fromUri(packageRoot), package); | |
61 if (!new Link(libLink).existsSync()) return null; | |
62 | |
63 return p.dirname(new Link(libLink).resolveSymbolicLinksSync()); | |
64 } | |
65 } | |
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