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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 library uri_extras; | 5 library uri_extras; |
6 | 6 |
7 import 'dart:math'; | 7 import 'dart:math'; |
8 import 'dart:uri'; | |
9 | 8 |
10 String relativize(Uri base, Uri uri, bool isWindows) { | 9 String relativize(Uri base, Uri uri, bool isWindows) { |
11 if (!base.path.startsWith('/')) { | 10 if (!base.path.startsWith('/')) { |
12 // Also throw an exception if [base] or base.path is null. | 11 // Also throw an exception if [base] or base.path is null. |
13 throw new ArgumentError('Expected absolute path: ${base.path}'); | 12 throw new ArgumentError('Expected absolute path: ${base.path}'); |
14 } | 13 } |
15 if (!uri.path.startsWith('/')) { | 14 if (!uri.path.startsWith('/')) { |
16 // Also throw an exception if [uri] or uri.path is null. | 15 // Also throw an exception if [uri] or uri.path is null. |
17 throw new ArgumentError('Expected absolute path: ${uri.path}'); | 16 throw new ArgumentError('Expected absolute path: ${uri.path}'); |
18 } | 17 } |
19 bool equalsNCS(String a, String b) { | 18 bool equalsNCS(String a, String b) { |
20 return a.toLowerCase() == b.toLowerCase(); | 19 return a.toLowerCase() == b.toLowerCase(); |
21 } | 20 } |
22 | 21 |
23 String normalize(String path) { | 22 String normalize(String path) { |
24 if (isWindows) { | 23 if (isWindows) { |
25 return path.toLowerCase(); | 24 return path.toLowerCase(); |
26 } else { | 25 } else { |
27 return path; | 26 return path; |
28 } | 27 } |
29 } | 28 } |
30 | 29 |
31 if (equalsNCS(base.scheme, 'file') && | 30 if (equalsNCS(base.scheme, 'file') && |
32 equalsNCS(base.scheme, uri.scheme) && | 31 equalsNCS(base.scheme, uri.scheme) && |
33 base.userInfo == uri.userInfo && | 32 base.userInfo == uri.userInfo && |
34 equalsNCS(base.domain, uri.domain) && | 33 equalsNCS(base.host, uri.host) && |
35 base.port == uri.port && | 34 base.port == uri.port && |
36 uri.query == "" && uri.fragment == "") { | 35 uri.query == "" && uri.fragment == "") { |
37 if (normalize(uri.path).startsWith(normalize(base.path))) { | 36 if (normalize(uri.path).startsWith(normalize(base.path))) { |
38 return uri.path.substring(base.path.length); | 37 return uri.path.substring(base.path.length); |
39 } | 38 } |
40 List<String> uriParts = uri.path.split('/'); | 39 List<String> uriParts = uri.path.split('/'); |
41 List<String> baseParts = base.path.split('/'); | 40 List<String> baseParts = base.path.split('/'); |
42 int common = 0; | 41 int common = 0; |
43 int length = min(uriParts.length, baseParts.length); | 42 int length = min(uriParts.length, baseParts.length); |
44 while (common < length && | 43 while (common < length && |
(...skipping 11 matching lines...) Expand all Loading... |
56 sb.write('../'); | 55 sb.write('../'); |
57 } | 56 } |
58 for (int i = common; i < uriParts.length - 1; i++) { | 57 for (int i = common; i < uriParts.length - 1; i++) { |
59 sb.write('${uriParts[i]}/'); | 58 sb.write('${uriParts[i]}/'); |
60 } | 59 } |
61 sb.write('${uriParts.last}'); | 60 sb.write('${uriParts.last}'); |
62 return sb.toString(); | 61 return sb.toString(); |
63 } | 62 } |
64 return uri.toString(); | 63 return uri.toString(); |
65 } | 64 } |
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