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Side by Side Diff: runtime/bin/path_impl.dart

Issue 10872033: Change getters syntax in dart:io library. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Created 8 years, 3 months ago
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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 class _Path implements Path { 5 class _Path implements Path {
6 final String _path; 6 final String _path;
7 7
8 const _Path(String source) : _path = source; 8 const _Path(String source) : _path = source;
9 _Path.fromNative(String source) : _path = _clean(source); 9 _Path.fromNative(String source) : _path = _clean(source);
10 10
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22 static String _cleanWindows(source) { 22 static String _cleanWindows(source) {
23 // Change \ to /. 23 // Change \ to /.
24 var clean = source.replaceAll('\\', '/'); 24 var clean = source.replaceAll('\\', '/');
25 // Add / before intial [Drive letter]: 25 // Add / before intial [Drive letter]:
26 if (clean.length >= 2 && clean[1] == ':') { 26 if (clean.length >= 2 && clean[1] == ':') {
27 clean = '/$clean'; 27 clean = '/$clean';
28 } 28 }
29 return clean; 29 return clean;
30 } 30 }
31 31
32 bool get isEmpty() => _path.isEmpty(); 32 bool get isEmpty => _path.isEmpty();
33 bool get isAbsolute() => _path.startsWith('/'); 33 bool get isAbsolute => _path.startsWith('/');
34 bool get hasTrailingSeparator() => _path.endsWith('/'); 34 bool get hasTrailingSeparator => _path.endsWith('/');
35 35
36 String toString() => _path; 36 String toString() => _path;
37 37
38 Path relativeTo(Path base) { 38 Path relativeTo(Path base) {
39 // Throws exception if an unimplemented or impossible case is reached. 39 // Throws exception if an unimplemented or impossible case is reached.
40 // Returns a path "relative" such that 40 // Returns a path "relative" such that
41 // base.join(relative) == this.canonicalize. 41 // base.join(relative) == this.canonicalize.
42 // Throws an exception if no such path exists, or the case is not 42 // Throws an exception if no such path exists, or the case is not
43 // implemented yet. 43 // implemented yet.
44 if (base.isAbsolute && _path.startsWith(base._path)) { 44 if (base.isAbsolute && _path.startsWith(base._path)) {
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70 return new Path('$_path/${further._path}').canonicalize(); 70 return new Path('$_path/${further._path}').canonicalize();
71 } 71 }
72 72
73 // Note: The URI RFC names for these operations are normalize, resolve, and 73 // Note: The URI RFC names for these operations are normalize, resolve, and
74 // relativize. 74 // relativize.
75 Path canonicalize() { 75 Path canonicalize() {
76 if (isCanonical) return this; 76 if (isCanonical) return this;
77 return makeCanonical(); 77 return makeCanonical();
78 } 78 }
79 79
80 bool get isCanonical() { 80 bool get isCanonical {
81 // Contains no consecutive path separators. 81 // Contains no consecutive path separators.
82 // Contains no segments that are '.'. 82 // Contains no segments that are '.'.
83 // Absolute paths have no segments that are '..'. 83 // Absolute paths have no segments that are '..'.
84 // All '..' segments of a relative path are at the beginning. 84 // All '..' segments of a relative path are at the beginning.
85 if (isEmpty) return false; // The canonical form of '' is '.'. 85 if (isEmpty) return false; // The canonical form of '' is '.'.
86 if (_path == '.') return true; 86 if (_path == '.') return true;
87 List segs = _path.split('/'); // Don't mask the getter 'segments'. 87 List segs = _path.split('/'); // Don't mask the getter 'segments'.
88 if (segs[0] == '') { // Absolute path 88 if (segs[0] == '') { // Absolute path
89 segs[0] = null; // Faster than removeRange(). 89 segs[0] = null; // Faster than removeRange().
90 } else { // A canonical relative path may start with .. segments. 90 } else { // A canonical relative path may start with .. segments.
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183 Path append(String finalSegment) { 183 Path append(String finalSegment) {
184 if (isEmpty) { 184 if (isEmpty) {
185 return new Path(finalSegment); 185 return new Path(finalSegment);
186 } else if (hasTrailingSeparator) { 186 } else if (hasTrailingSeparator) {
187 return new Path('$_path$finalSegment'); 187 return new Path('$_path$finalSegment');
188 } else { 188 } else {
189 return new Path('$_path/$finalSegment'); 189 return new Path('$_path/$finalSegment');
190 } 190 }
191 } 191 }
192 192
193 String get filenameWithoutExtension() { 193 String get filenameWithoutExtension {
194 var name = filename; 194 var name = filename;
195 if (name == '.' || name == '..') return name; 195 if (name == '.' || name == '..') return name;
196 int pos = name.lastIndexOf('.'); 196 int pos = name.lastIndexOf('.');
197 return (pos < 0) ? name : name.substring(0, pos); 197 return (pos < 0) ? name : name.substring(0, pos);
198 } 198 }
199 199
200 String get extension() { 200 String get extension {
201 var name = filename; 201 var name = filename;
202 int pos = name.lastIndexOf('.'); 202 int pos = name.lastIndexOf('.');
203 return (pos < 0) ? '' : name.substring(pos + 1); 203 return (pos < 0) ? '' : name.substring(pos + 1);
204 } 204 }
205 205
206 Path get directoryPath() { 206 Path get directoryPath {
207 int pos = _path.lastIndexOf('/'); 207 int pos = _path.lastIndexOf('/');
208 if (pos < 0) return new Path(''); 208 if (pos < 0) return new Path('');
209 while (pos > 0 && _path[pos - 1] == '/') --pos; 209 while (pos > 0 && _path[pos - 1] == '/') --pos;
210 return new Path((pos > 0) ? _path.substring(0, pos) : '/'); 210 return new Path((pos > 0) ? _path.substring(0, pos) : '/');
211 } 211 }
212 212
213 String get filename() { 213 String get filename {
214 int pos = _path.lastIndexOf('/'); 214 int pos = _path.lastIndexOf('/');
215 return _path.substring(pos + 1); 215 return _path.substring(pos + 1);
216 } 216 }
217 } 217 }
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