// Copyright 2016 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:package_config/packages_file.dart' as packages_file; import '../base/file_system.dart'; import '../base/platform.dart'; const String kPackagesFileName = '.packages'; Map<String, Uri> _parse(String packagesPath) { final List<int> source = fs.file(packagesPath).readAsBytesSync(); return packages_file.parse(source, Uri.file(packagesPath, windows: platform.isWindows)); } class PackageMap { PackageMap(this.packagesPath); static String get globalPackagesPath => _globalPackagesPath ?? kPackagesFileName; static String get globalGeneratedPackagesPath => fs.path.setExtension(globalPackagesPath, '.generated'); static set globalPackagesPath(String value) { _globalPackagesPath = value; } static bool get isUsingCustomPackagesPath => _globalPackagesPath != null; static String _globalPackagesPath; final String packagesPath; /// Load and parses the .packages file. void load() { _map ??= _parse(packagesPath); } Map<String, Uri> get map { load(); return _map; } Map<String, Uri> _map; /// Returns the path to [packageUri]. String pathForPackage(Uri packageUri) => uriForPackage(packageUri).path; /// Returns the path to [packageUri] as Uri. Uri uriForPackage(Uri packageUri) { assert(packageUri.scheme == 'package'); final List<String> pathSegments = packageUri.pathSegments.toList(); final String packageName = pathSegments.removeAt(0); final Uri packageBase = map[packageName]; if (packageBase == null) return null; final String packageRelativePath = fs.path.joinAll(pathSegments); return packageBase.resolveUri(fs.path.toUri(packageRelativePath)); } String checkValid() { if (fs.isFileSync(packagesPath)) return null; String message = '$packagesPath does not exist.'; final String pubspecPath = fs.path.absolute(fs.path.dirname(packagesPath), 'pubspec.yaml'); if (fs.isFileSync(pubspecPath)) message += '\nDid you run "flutter pub get" in this directory?'; else message += '\nDid you run this command from the same directory as your pubspec.yaml file?'; return message; } }