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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2014, 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 library source.package_map_resolver; | 5 library source.package_map_resolver; |
6 | 6 |
7 import 'package:analyzer/file_system/file_system.dart'; | 7 import 'package:analyzer/file_system/file_system.dart'; |
8 import 'package:analyzer/src/generated/source.dart'; | 8 import 'package:analyzer/src/generated/source.dart'; |
9 | 9 |
10 | 10 |
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31 | 31 |
32 /** | 32 /** |
33 * Create a new [PackageMapUriResolver]. | 33 * Create a new [PackageMapUriResolver]. |
34 * | 34 * |
35 * [packageMap] is a table mapping package names to the paths of the | 35 * [packageMap] is a table mapping package names to the paths of the |
36 * directories containing the package | 36 * directories containing the package |
37 */ | 37 */ |
38 PackageMapUriResolver(this.resourceProvider, this.packageMap); | 38 PackageMapUriResolver(this.resourceProvider, this.packageMap); |
39 | 39 |
40 @override | 40 @override |
41 Source fromEncoding(UriKind kind, Uri uri) { | |
42 if (kind == UriKind.PACKAGE_URI) { | |
43 Resource resource = resourceProvider.getResource(uri.path); | |
44 if (resource is File) { | |
45 return resource.createSource(kind); | |
46 } | |
47 } | |
48 return null; | |
49 } | |
50 | |
51 @override | |
52 Source resolveAbsolute(Uri uri) { | 41 Source resolveAbsolute(Uri uri) { |
53 if (!isPackageUri(uri)) { | 42 if (!isPackageUri(uri)) { |
54 return null; | 43 return null; |
55 } | 44 } |
56 // Prepare path. | 45 // Prepare path. |
57 String path = uri.path; | 46 String path = uri.path; |
58 // Prepare path components. | 47 // Prepare path components. |
59 String pkgName; | 48 String pkgName; |
60 String relPath; | 49 String relPath; |
61 int index = path.indexOf('/'); | 50 int index = path.indexOf('/'); |
62 if (index == -1 || index == 0) { | 51 if (index == -1 || index == 0) { |
63 return null; | 52 return null; |
64 } else { | 53 } else { |
65 // <pkgName>/<relPath> | 54 // <pkgName>/<relPath> |
66 pkgName = path.substring(0, index); | 55 pkgName = path.substring(0, index); |
67 relPath = path.substring(index + 1); | 56 relPath = path.substring(index + 1); |
68 } | 57 } |
69 // Try to find an existing file. | 58 // Try to find an existing file. |
70 List<Folder> packageDirs = packageMap[pkgName]; | 59 List<Folder> packageDirs = packageMap[pkgName]; |
71 if (packageDirs != null) { | 60 if (packageDirs != null) { |
72 for (Folder packageDir in packageDirs) { | 61 for (Folder packageDir in packageDirs) { |
73 if (packageDir.exists) { | 62 if (packageDir.exists) { |
74 Resource result = packageDir.getChild(relPath); | 63 Resource result = packageDir.getChild(relPath); |
75 if (result is File && result.exists) { | 64 if (result is File && result.exists) { |
76 return result.createSource(UriKind.PACKAGE_URI); | 65 return result.createSource(uri); |
77 } | 66 } |
78 } | 67 } |
79 } | 68 } |
80 } | 69 } |
81 // Return a NonExistingSource instance. | 70 // Return a NonExistingSource instance. |
82 // This helps provide more meaningful error messages to users | 71 // This helps provide more meaningful error messages to users |
83 // (a missing file error, as opposed to an invalid URI error). | 72 // (a missing file error, as opposed to an invalid URI error). |
84 return new NonExistingSource(uri.toString(), UriKind.PACKAGE_URI); | 73 return new NonExistingSource(uri.toString(), UriKind.PACKAGE_URI); |
85 } | 74 } |
86 | 75 |
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100 return null; | 89 return null; |
101 } | 90 } |
102 | 91 |
103 /** | 92 /** |
104 * Returns `true` if [uri] is a `package` URI. | 93 * Returns `true` if [uri] is a `package` URI. |
105 */ | 94 */ |
106 static bool isPackageUri(Uri uri) { | 95 static bool isPackageUri(Uri uri) { |
107 return uri.scheme == PACKAGE_SCHEME; | 96 return uri.scheme == PACKAGE_SCHEME; |
108 } | 97 } |
109 } | 98 } |
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