| // Copyright (c) 2021, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// Returns [name] if [number] is 1, or the plural of [name] otherwise. |
| /// |
| /// By default, this just adds "s" to the end of [name] to get the plural. If |
| /// [plural] is passed, that's used instead. |
| String pluralize(String name, int number, {String? plural}) { |
| if (number == 1) return name; |
| if (plural != null) return plural; |
| return '${name}s'; |
| } |
| |
| /// Returns a sentence fragment listing the elements of [iter]. |
| /// |
| /// This converts each element of [iter] to a string and separates them with |
| /// commas and/or [conjunction] where appropriate. The [conjunction] defaults to |
| /// "and". |
| String toSentence(Iterable iter, {String conjunction = 'and'}) { |
| if (iter.length == 1) return iter.first.toString(); |
| |
| var result = iter.take(iter.length - 1).join(', '); |
| if (iter.length > 2) result += ','; |
| return '$result $conjunction ${iter.last}'; |
| } |
| |
| /// Returns a human-friendly representation of [duration]. |
| String niceDuration(Duration duration) { |
| var minutes = duration.inMinutes; |
| var seconds = duration.inSeconds % 60; |
| var decaseconds = (duration.inMilliseconds % 1000) ~/ 100; |
| |
| var buffer = StringBuffer(); |
| if (minutes != 0) buffer.write('$minutes minutes'); |
| |
| if (minutes == 0 || seconds != 0) { |
| if (minutes != 0) buffer.write(', '); |
| buffer.write(seconds); |
| if (decaseconds != 0) buffer.write('.$decaseconds'); |
| buffer.write(' seconds'); |
| } |
| |
| return buffer.toString(); |
| } |