Brian Wilkerson
6f15530536
Change-Id: I908e15b4820eab0e8375994ce3cebfac332306f3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/141581 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
31 lines
1.1 KiB
Dart
31 lines
1.1 KiB
Dart
// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:io';
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import 'package:path/path.dart' as pathos;
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/// Returns a path to the directory containing source code for packages such as
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/// kernel, front_end, and analyzer.
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String get packageRoot {
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// If the package root directory is specified on the command line using
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// -DpkgRoot=..., use it.
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var pkgRootVar = bool.hasEnvironment('pkgRoot')
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? const String.fromEnvironment('pkgRoot')
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: null;
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if (pkgRootVar != null) {
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var path = pathos.join(Directory.current.path, pkgRootVar);
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if (!path.endsWith(pathos.separator)) path += pathos.separator;
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return path;
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}
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// Otherwise try to guess based on the script path.
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var scriptPath = pathos.fromUri(Platform.script);
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var parts = pathos.split(scriptPath);
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var pkgIndex = parts.indexOf('pkg');
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if (pkgIndex != -1) {
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return pathos.joinAll(parts.sublist(0, pkgIndex + 1)) + pathos.separator;
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}
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throw StateError('Unable to find sdk/pkg/ in $scriptPath');
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}
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