4fa32df141
* use null aware operators * rollback changes about null-aware operator * disable lint prefer_is_not_empty
51 lines
1.3 KiB
Dart
51 lines
1.3 KiB
Dart
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import '../convert.dart';
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import 'context.dart';
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import 'file_system.dart';
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import 'platform.dart';
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class Config {
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Config([File configFile]) {
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_configFile = configFile ?? fs.file(fs.path.join(_userHomeDir(), '.flutter_settings'));
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if (_configFile.existsSync())
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_values = json.decode(_configFile.readAsStringSync());
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}
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static Config get instance => context.get<Config>();
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File _configFile;
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String get configPath => _configFile.path;
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Map<String, dynamic> _values = <String, dynamic>{};
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Iterable<String> get keys => _values.keys;
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bool containsKey(String key) => _values.containsKey(key);
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dynamic getValue(String key) => _values[key];
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void setValue(String key, String value) {
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_values[key] = value;
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_flushValues();
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}
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void removeValue(String key) {
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_values.remove(key);
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_flushValues();
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}
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void _flushValues() {
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String json = const JsonEncoder.withIndent(' ').convert(_values);
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json = '$json\n';
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_configFile.writeAsStringSync(json);
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}
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}
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String _userHomeDir() {
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final String envKey = platform.operatingSystem == 'windows' ? 'APPDATA' : 'HOME';
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return platform.environment[envKey] ?? '.';
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}
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