blob: 169fbbc119993f04078188c90c2d8927db78162d [file] [log] [blame]
#!/usr/bin/env dart
/// Generates the repo's ".dart_tool/package_config.json" file.
import 'dart:convert';
import 'dart:io';
import 'package:path/path.dart' as p;
import 'package:pub_semver/pub_semver.dart';
import 'package:yaml/yaml.dart';
final repoRoot = p.dirname(p.dirname(p.fromUri(Platform.script)));
final configFilePath = p.join(repoRoot, '.dart_tool/package_config.json');
void main(List<String> args) {
var packageDirs = [
var cfePackageDirs = [
var packages = [
packages.sort((a, b) => a["name"].compareTo(b["name"]));
var year =;
var config = <String, dynamic>{
'copyright': [
'Copyright (c) $year, the Dart project authors. Please see the AUTHORS ',
'file for details. All rights reserved. Use of this source code is ',
'governed by a BSD-style license that can be found in the LICENSE file.'
'comment': [
'Package configuration for all packages in /pkg, and checked out by DEPS',
'into /third_party/pkg and /third_party/pkg_tested.',
'If you add a package to DEPS or /pkg or change a package\'s SDK',
'constraint, update this by running tools/generate_package_config.dart.'
'configVersion': 2,
'generator': 'tools/generate_package_config.dart',
'packages': packages,
// TODO(rnystrom): Consider using package_config_v2 to generate this instead.
var json = JsonEncoder.withIndent(' ').convert(config);
File(p.join(repoRoot, '.dart_tool', 'package_config.json'))
print('Generated .dart_tool/package_config.dart containing '
'${packages.length} packages.');
/// Generates package configurations for each package in [packageDirs].
Iterable<Map<String, String>> makePackageConfigs(
List<String> packageDirs) sync* {
for (var packageDir in packageDirs) {
var version = pubspecLanguageVersion(packageDir);
var hasLibDirectory = Directory(p.join(packageDir, 'lib')).existsSync();
// TODO(rnystrom): Currently, the pre-built SDK does not allow language
// version 2.9.0. Until that's fixed, if we see that version, just write
// no version at all so that implementations use the current language
// version.
if (version.toString() == '2.9.0') version = null;
yield {
'name': p.basename(packageDir),
'rootUri': p
.toUri(p.relative(packageDir, from: p.dirname(configFilePath)))
if (hasLibDirectory) 'packageUri': 'lib/',
if (version != null)
'languageVersion': '${version.major}.${version.minor}'
/// Generates package configurations for the special pseudo-packages used by
/// the CFE unit tests (`pkg/front_end/test/unit_test_suites.dart`).
Iterable<Map<String, String>> makeCfePackageConfigs(
List<String> packageDirs) sync* {
for (var packageDir in packageDirs) {
yield {
'name': 'front_end_${p.basename(packageDir)}',
'rootUri': p
.toUri(p.relative(packageDir, from: p.dirname(configFilePath)))
'packageUri': '.nonexisting/',
/// Generates a path to [relativePath] within the repo.
String packageDirectory(String relativePath) => p.join(repoRoot, relativePath);
/// Finds the paths of the immediate subdirectories of [packagesDir] that
/// contain pubspecs.
Iterable<String> listSubdirectories(String packagesDir) sync* {
for (var entry in Directory(p.join(repoRoot, packagesDir)).listSync()) {
if (entry is! Directory) continue;
if (!File(p.join(entry.path, 'pubspec.yaml')).existsSync()) continue;
yield entry.path;
/// Infers the language version from the SDK constraint in the pubspec for
/// [packageDir].
/// Returns `null` if there is no pubspec or no SDK constraint.
Version pubspecLanguageVersion(String packageDir) {
var pubspecFile = File(p.join(packageDir, 'pubspec.yaml'));
if (!pubspecFile.existsSync()) return null;
var pubspec =
loadYaml(pubspecFile.readAsStringSync()) as Map<dynamic, dynamic>;
if (!pubspec.containsKey('environment')) return null;
var environment = pubspec['environment'] as Map<dynamic, dynamic>;
if (!environment.containsKey('sdk')) return null;
var sdkConstraint = VersionConstraint.parse(environment['sdk'] as String);
if (sdkConstraint is VersionRange) return sdkConstraint.min;
return null;