Sam Rawlins
4ef2725654
We intend to publish and maintain this as a set of testing-related utilities for the analyzer packages and for analyzer plugins. Work towards https://github.com/dart-lang/sdk/issues/55660 See the doc: https://docs.google.com/document/d/1jRtd8B1ijPAP6Pz89HRnyIZXw2VMjaZx0vRZTpoNO84/edit?tab=t.0#heading=h.2sz41a544qhi Change-Id: I2764b1357a932fa955060b26d78038997eaa9536 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/425080 Reviewed-by: Slava Egorov <vegorov@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com> Reviewed-by: Paul Berry <paulberry@google.com>
55 lines
2.0 KiB
Dart
55 lines
2.0 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 path;
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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 that.
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const pkgRootVar =
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bool.hasEnvironment('pkgRoot') ? String.fromEnvironment('pkgRoot') : null;
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if (pkgRootVar != null) {
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var pkgRootPath = path.join(Directory.current.path, pkgRootVar);
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if (!pkgRootPath.endsWith(path.separator)) pkgRootPath += path.separator;
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return pkgRootPath;
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}
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// Otherwise try to guess based on the script path.
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var scriptPath = path.fromUri(Platform.script);
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var pathFromScript = _tryGetPkgRoot(scriptPath);
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if (pathFromScript != null) {
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return pathFromScript;
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}
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// Try a Bazel environment. We expect that all packages that will be
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// accessed via this root are configured in the BUILD file, and located
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// inside this single root.
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var runFiles = Platform.environment['TEST_SRCDIR'];
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var analyzerPackagesRoot = Platform.environment['ANALYZER_PACKAGES_ROOT'];
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if (runFiles != null && analyzerPackagesRoot != null) {
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return path.join(runFiles, analyzerPackagesRoot);
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}
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// Finally, try the current working directory.
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var pathFromCwd = _tryGetPkgRoot(Directory.current.path);
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if (pathFromCwd != null) {
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return pathFromCwd;
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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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/// Tries to find the path to the 'pkg' folder from [searchPath].
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String? _tryGetPkgRoot(String searchPath) {
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var parts = path.split(searchPath);
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var pkgIndex = parts.indexOf('pkg');
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if (pkgIndex != -1) {
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return path.joinAll(parts.sublist(0, pkgIndex + 1)) + path.separator;
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}
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return null;
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}
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