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Side by Side Diff: pkg/path/lib/src/context.dart

Issue 296233002: Add a path.formatUri method and release path 1.2.0. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: code review Created 6 years, 7 months ago
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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.context; 5 library path.context;
6 6
7 import 'style.dart'; 7 import 'style.dart';
8 import 'parsed_path.dart'; 8 import 'parsed_path.dart';
9 import 'path_exception.dart'; 9 import 'path_exception.dart';
10 import '../path.dart' as p; 10 import '../path.dart' as p;
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465 /// context.toUri('http://dartlang.org/path/to/foo') 465 /// context.toUri('http://dartlang.org/path/to/foo')
466 /// // -> Uri.parse('http://dartlang.org/path/to/foo') 466 /// // -> Uri.parse('http://dartlang.org/path/to/foo')
467 Uri toUri(String path) { 467 Uri toUri(String path) {
468 if (isRelative(path)) { 468 if (isRelative(path)) {
469 return style.relativePathToUri(path); 469 return style.relativePathToUri(path);
470 } else { 470 } else {
471 return style.absolutePathToUri(join(current, path)); 471 return style.absolutePathToUri(join(current, path));
472 } 472 }
473 } 473 }
474 474
475 /// Returns a terse, human-readable representation of [uri].
476 ///
477 /// [uri] can be a [String] or a [Uri]. If it can be made relative to the
478 /// current working directory, that's done. Otherwise, it's returned as-is.
479 /// This gracefully handles non-`file:` URIs for [Style.posix] and
480 /// [Style.windows].
481 ///
482 /// The returned value is meant for human consumption, and may be either URI-
483 /// or path-formatted.
484 ///
485 /// // POSIX
486 /// var context = new Context(current: '/root/path');
487 /// context.prettyUri('file:///root/path/a/b.dart'); // -> 'a/b.dart'
488 /// context.prettyUri('http://dartlang.org/'); // -> 'http://dartlang.org'
489 ///
490 /// // Windows
491 /// var context = new Context(current: r'C:\root\path');
492 /// context.prettyUri('file:///C:/root/path/a/b.dart'); // -> r'a\b.dart'
493 /// context.prettyUri('http://dartlang.org/'); // -> 'http://dartlang.org'
494 ///
495 /// // URL
496 /// var context = new Context(current: 'http://dartlang.org/root/path');
497 /// context.prettyUri('http://dartlang.org/root/path/a/b.dart');
498 /// // -> r'a/b.dart'
499 /// context.prettyUri('file:///root/path'); // -> 'file:///root/path'
500 String prettyUri(uri) {
501 if (uri is String) uri = Uri.parse(uri);
502 if (uri.scheme == 'file' && style == Style.url) return uri.toString();
503 if (uri.scheme != 'file' && uri.scheme != '' && style != Style.url) {
504 return uri.toString();
505 }
506
507 var path = normalize(fromUri(uri));
508 var rel = relative(path);
509 var components = split(rel);
510
511 // Only return a relative path if it's actually shorter than the absolute
512 // path. This avoids ugly things like long "../" chains to get to the root
513 // and then go back down.
514 return split(rel).length > split(path).length ? path : rel;
515 }
516
475 ParsedPath _parse(String path) => new ParsedPath.parse(path, style); 517 ParsedPath _parse(String path) => new ParsedPath.parse(path, style);
476 } 518 }
477 519
478 /// Validates that there are no non-null arguments following a null one and 520 /// Validates that there are no non-null arguments following a null one and
479 /// throws an appropriate [ArgumentError] on failure. 521 /// throws an appropriate [ArgumentError] on failure.
480 _validateArgList(String method, List<String> args) { 522 _validateArgList(String method, List<String> args) {
481 for (var i = 1; i < args.length; i++) { 523 for (var i = 1; i < args.length; i++) {
482 // Ignore nulls hanging off the end. 524 // Ignore nulls hanging off the end.
483 if (args[i] == null || args[i - 1] != null) continue; 525 if (args[i] == null || args[i - 1] != null) continue;
484 526
485 var numArgs; 527 var numArgs;
486 for (numArgs = args.length; numArgs >= 1; numArgs--) { 528 for (numArgs = args.length; numArgs >= 1; numArgs--) {
487 if (args[numArgs - 1] != null) break; 529 if (args[numArgs - 1] != null) break;
488 } 530 }
489 531
490 // Show the arguments. 532 // Show the arguments.
491 var message = new StringBuffer(); 533 var message = new StringBuffer();
492 message.write("$method("); 534 message.write("$method(");
493 message.write(args.take(numArgs) 535 message.write(args.take(numArgs)
494 .map((arg) => arg == null ? "null" : '"$arg"') 536 .map((arg) => arg == null ? "null" : '"$arg"')
495 .join(", ")); 537 .join(", "));
496 message.write("): part ${i - 1} was null, but part $i was not."); 538 message.write("): part ${i - 1} was null, but part $i was not.");
497 throw new ArgumentError(message.toString()); 539 throw new ArgumentError(message.toString());
498 } 540 }
499 } 541 }
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