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// Copyright (c) 2012, 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.
/// A utility function for test and tools that compensates (at least for very
/// simple cases) for file-dependent programs being run from different
/// directories. The important cases are
/// - running in the directory that contains the test itself, i.e.
/// test/ or a sub-directory.
/// - running in root of this package, which is where the editor and bots will
/// run things by default
library data_directory;
import "dart:io";
import "package:path/path.dart" as path;
String get dataDirectory {
return path.join(intlDirectory, datesRelativeToIntl);
/// Returns whether [dir] is the root of the `intl` package. We validate that it
/// is by looking for a pubspec file with the entry `name: intl`.
bool _isIntlRoot(String dir) {
var file = new File(path.join(dir, 'pubspec.yaml'));
if (!file.existsSync()) return false;
return file.readAsStringSync().contains('name: intl\n');
String get intlDirectory {
var dir;
if (Platform.script.scheme == 'file') {
dir = path.fromUri(Platform.script);
} else {
dir = Directory.current.absolute.path;
var root = path.rootPrefix(dir);
while (dir != root) {
if (_isIntlRoot(dir)) return dir;
dir = path.dirname(dir);
throw new UnsupportedError(
'Cannot find the root directory of the `intl` package.');
String get datesRelativeToIntl => path.join('lib', 'src', 'data', 'dates');