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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 path.style.url; | 5 library path.style.url; |
6 | 6 |
7 import '../characters.dart' as chars; | 7 import '../characters.dart' as chars; |
8 import '../internal_style.dart'; | 8 import '../internal_style.dart'; |
9 import '../utils.dart'; | 9 import '../utils.dart'; |
10 | 10 |
(...skipping 18 matching lines...) Expand all Loading... | |
29 bool isSeparator(int codeUnit) => codeUnit == chars.SLASH; | 29 bool isSeparator(int codeUnit) => codeUnit == chars.SLASH; |
30 | 30 |
31 bool needsSeparator(String path) { | 31 bool needsSeparator(String path) { |
32 if (path.isEmpty) return false; | 32 if (path.isEmpty) return false; |
33 | 33 |
34 // A URL that doesn't end in "/" always needs a separator. | 34 // A URL that doesn't end in "/" always needs a separator. |
35 if (!isSeparator(path.codeUnitAt(path.length - 1))) return true; | 35 if (!isSeparator(path.codeUnitAt(path.length - 1))) return true; |
36 | 36 |
37 // A URI that's just "scheme://" needs an extra separator, despite ending | 37 // A URI that's just "scheme://" needs an extra separator, despite ending |
38 // with "/". | 38 // with "/". |
39 var root = _getRoot(path); | 39 return path.endsWith("://"); |
nweiz
2014/08/04 20:11:58
This isn't sufficient; it fails on "foo/bar://".
Anders Johnsen
2014/08/05 08:57:13
I see.
| |
40 return root != null && root.endsWith('://'); | 40 } |
41 | |
42 int rootLength(String path) { | |
43 if (path.isEmpty) return 0; | |
44 if (isSeparator(path.codeUnitAt(0))) return 1; | |
45 int index = path.indexOf("://"); | |
46 if (index >= 0) { | |
47 index = path.indexOf('/', index + 3); | |
Bob Nystrom
2014/08/04 17:17:32
Document this line please.
Anders Johnsen
2014/08/05 08:57:13
Done.
| |
48 if (index > 0) return index; | |
49 return path.length; | |
50 } | |
nweiz
2014/08/04 20:11:58
I believe this also fails on "foo/bar://".
Anders Johnsen
2014/08/05 08:57:13
Done.
| |
51 return 0; | |
41 } | 52 } |
42 | 53 |
43 String getRoot(String path) { | 54 String getRoot(String path) { |
44 var root = _getRoot(path); | 55 int length = rootLength(path); |
45 return root == null ? getRelativeRoot(path) : root; | 56 if (length > 0) return path.substring(0, length); |
57 return getRelativeRoot(path); | |
46 } | 58 } |
47 | 59 |
48 String getRelativeRoot(String path) { | 60 String getRelativeRoot(String path) { |
49 if (path.isEmpty) return null; | 61 if (path.isEmpty) return null; |
50 return isSeparator(path.codeUnitAt(0)) ? "/" : null; | 62 return isSeparator(path.codeUnitAt(0)) ? "/" : null; |
51 } | 63 } |
52 | 64 |
53 String pathFromUri(Uri uri) => uri.toString(); | 65 String pathFromUri(Uri uri) => uri.toString(); |
54 | 66 |
55 Uri relativePathToUri(String path) => Uri.parse(path); | 67 Uri relativePathToUri(String path) => Uri.parse(path); |
56 Uri absolutePathToUri(String path) => Uri.parse(path); | 68 Uri absolutePathToUri(String path) => Uri.parse(path); |
57 | |
58 // A helper method for [getRoot] that doesn't handle relative roots. | |
59 String _getRoot(String path) { | |
60 if (path.isEmpty) return null; | |
61 | |
62 // We aren't using a RegExp for this because they're slow (issue 19090). If | |
63 // we could, we'd match against r"[a-zA-Z][-+.a-zA-Z\d]*://[^/]*". | |
64 | |
65 if (!isAlphabetic(path.codeUnitAt(0))) return null; | |
66 var start = 1; | |
67 for (; start < path.length; start++) { | |
68 var char = path.codeUnitAt(start); | |
69 if (isAlphabetic(char)) continue; | |
70 if (isNumeric(char)) continue; | |
71 if (char == chars.MINUS || char == chars.PLUS || char == chars.PERIOD) { | |
72 continue; | |
73 } | |
74 | |
75 break; | |
76 } | |
77 | |
78 if (start + 3 > path.length) return null; | |
79 if (path.substring(start, start + 3) != '://') return null; | |
80 start += 3; | |
81 | |
82 // A URL root can end with a non-"/" prefix. | |
83 while (start < path.length && !isSeparator(path.codeUnitAt(start))) { | |
84 start++; | |
85 } | |
86 return path.substring(0, start); | |
87 } | |
88 } | 69 } |
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