Initial commit

.gitignore

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+.buildlog
+.dart_tool/
+.DS_Store
+.idea
+.pub/
+.settings/
+*.iml
+**/build
+**/packages
+**/pubspec.lock
+**/.packages

CHANGELOG.md

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+# Changelog
+
+## [0.0.2] - 2019-02-12
+### Added
+-Updated README.md
+
+## [0.0.1] - 2019-02-12
+### Added
+-Initial release

README.md

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+# flutter locale gen
+
+Dart tool that will convert your default locale json to dart code.
+
+[![pub package](https://img.shields.io/pub/v/locale_gen.svg)](https://pub.dartlang.org/packages/locale_gen)
+
+This repo contains an example how to use this package.
+
+Packages used:
+ - flutter_localizations
+ - provider
+ - kiwi
+ - locale_gen
+
+## Example
+
+<img src="https://github.com/vanlooverenkoen/locale_gen/blob/master/assets/example.gif?raw=true" alt="Example" width="300"/>
+
+## Setup
+
+### Add dependency to pubspec
+
+[![pub package](https://img.shields.io/pub/v/locale_gen.svg)](https://pub.dartlang.org/packages/locale_gen)
+```
+dev-dependencies:
+  locale_gen: <latest-version>
+```
+
+### Add config to pubspec
+
+Add your locale folder to the assets to make use all your translations are loaded.
+```
+flutter:
+  assets:
+    - assets/locale/
+```
+
+Add the local_gen config to generate your dart code from json files
+```
+locale_gen:
+  default_language: 'nl'
+  languages: ['en', 'nl']
+```
+
+if nothing is configured the following config will be used:
+```
+locale_gen:
+  default_language: 'en'
+  languages: ['en']
+```
+
+### Run package with Flutter
+
+```
+flutter packages pub run locale_gen
+```
+
+### Run package with Dart
+
+```
+pub run locale_gen
+```

analysis_options.yaml

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+analyzer:
+  errors:
+    missing_required_param: error
+    missing_return: error
+    todo: ignore
+    sdk_version_async_exported_from_core: ignore
+  exclude:
+    - '**.g.dart'
+
+linter:
+  rules:
+    - always_put_required_named_parameters_first
+    - always_require_non_null_named_parameters
+    - annotate_overrides
+    - avoid_annotating_with_dynamic
+    - avoid_as
+    - avoid_bool_literals_in_conditional_expressions
+    - avoid_catching_errors
+    - avoid_double_and_int_checks
+    - avoid_empty_else
+    - avoid_field_initializers_in_const_classes
+    - avoid_implementing_value_types
+    - avoid_init_to_null
+    - avoid_js_rounded_ints
+    - avoid_null_checks_in_equality_operators
+    - avoid_positional_boolean_parameters
+    - avoid_private_typedef_functions
+    - avoid_relative_lib_imports
+    - avoid_renaming_method_parameters
+    - avoid_return_types_on_setters
+    - avoid_returning_null
+    - avoid_returning_null_for_future
+    - avoid_returning_null_for_void
+    - avoid_returning_this
+    - avoid_setters_without_getters
+    - avoid_shadowing_type_parameters
+    - avoid_single_cascade_in_expression_statements
+    - avoid_slow_async_io
+    - avoid_types_as_parameter_names
+    - avoid_types_on_closure_parameters
+    - avoid_unused_constructor_parameters
+    - avoid_void_async
+    - await_only_futures
+    - camel_case_types
+    - cancel_subscriptions
+    - cascade_invocations
+    - close_sinks
+    - comment_references
+    - control_flow_in_finally
+    - curly_braces_in_flow_control_structures
+    - directives_ordering
+    - empty_catches
+    - empty_constructor_bodies
+    - empty_statements
+    - file_names
+    - hash_and_equals
+    - implementation_imports
+    - invariant_booleans
+    - iterable_contains_unrelated_type
+    - join_return_with_assignment
+    - library_names
+    - library_prefixes
+    - list_remove_unrelated_type
+    - literal_only_boolean_expressions
+    - no_adjacent_strings_in_list
+    - no_duplicate_case_values
+    - non_constant_identifier_names
+    - null_closures
+    - omit_local_variable_types
+    - one_member_abstracts
+    - only_throw_errors
+    - overridden_fields
+    - package_api_docs
+    - package_names
+    - package_prefixed_library_names
+    - parameter_assignments
+    - prefer_adjacent_string_concatenation
+    - prefer_asserts_in_initializer_lists
+    - prefer_conditional_assignment
+    - prefer_const_constructors
+    - prefer_const_constructors_in_immutables
+    - prefer_const_declarations
+    - prefer_const_literals_to_create_immutables
+    - prefer_constructors_over_static_methods
+    - prefer_contains
+    - prefer_equal_for_default_values
+    - prefer_final_fields
+    - prefer_final_in_for_each
+    - prefer_final_locals
+    - prefer_foreach
+    - prefer_function_declarations_over_variables
+    - prefer_generic_function_type_aliases
+    - prefer_initializing_formals
+    - prefer_int_literals
+    - prefer_interpolation_to_compose_strings
+    - prefer_is_empty
+    - prefer_is_not_empty
+    - prefer_iterable_whereType
+    - prefer_null_aware_operators
+    - prefer_single_quotes
+    - prefer_typing_uninitialized_variables
+    - prefer_void_to_null
+    - recursive_getters
+    - slash_for_doc_comments
+    - sort_pub_dependencies
+    - test_types_in_equals
+    - throw_in_finally
+    - type_init_formals
+    - unawaited_futures
+    - unnecessary_await_in_return
+    - unnecessary_brace_in_string_interps
+    - unnecessary_const
+    - unnecessary_getters_setters
+    - unnecessary_lambdas
+    - unnecessary_new
+    - unnecessary_null_aware_assignments
+    - unnecessary_null_in_if_null_operators
+    - unnecessary_overrides
+    - unnecessary_parenthesis
+    - unnecessary_statements
+    - unnecessary_this
+    - unrelated_type_equality_checks
+    - use_full_hex_values_for_flutter_colors
+    - use_rethrow_when_possible
+    - use_setters_to_change_properties
+    - use_string_buffers
+    - use_to_and_as_if_applicable
+    - valid_regexps
+    - void_checks

bin/locale_gen.dart

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+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:path/path.dart';
+
+import 'src/case_util.dart';
+import 'src/params.dart';
+
+final outputDir = join('lib', 'util', 'locale');
+final assetsDir = join('assets', 'locale');
+
+Params params;
+
+Future<void> main(List<String> args) async {
+  final pubspecYaml = File(join(Directory.current.path, 'pubspec.yaml'));
+  if (!pubspecYaml.existsSync()) throw Exception('This program should be run from the root of a flutter/dart project');
+
+  await parsePubspec(pubspecYaml);
+
+  final defaultLocaleJson = File(join(Directory.current.path, assetsDir, '${params.defaultLanguage}.json'));
+  if (!defaultLocaleJson.existsSync()) {
+    throw Exception('${defaultLocaleJson.path} does not exists');
+  }
+
+  createLocalizationFile(defaultLocaleJson);
+  createLocalizationDelegateFile();
+  print('Done!!!');
+}
+
+Future<void> parsePubspec(File pubspecYaml) async {
+  final pubspecContent = pubspecYaml.readAsStringSync();
+  params = Params(pubspecContent);
+  print('Default language: ${params.defaultLanguage}');
+  print('Supported languages: ${params.languages}');
+}
+
+void createLocalizationFile(File defaultLocaleJson) {
+  print('Creating localization.dart ...');
+  final sb = StringBuffer()
+    ..writeln("import 'dart:convert';")
+    ..writeln()
+    ..writeln("import 'package:flutter/services.dart';")
+    ..writeln("import 'package:flutter/widgets.dart';")
+    ..writeln()
+    ..writeln('//============================================================//')
+    ..writeln('//THIS FILE IS AUTO GENERATED. DO NOT EDIT//')
+    ..writeln('//============================================================//')
+    ..writeln('class Localization {')
+    ..writeln('  Map<dynamic, dynamic> _localisedValues;')
+    ..writeln()
+    ..writeln('  static Localization of(BuildContext context) => Localizations.of<Localization>(context, Localization);')
+    ..writeln('  ')
+    ..writeln('  static Future<Localization> load(Locale locale) async {')
+    ..writeln('    final localizations = Localization();')
+    ..writeln("    print('Switching to \${locale.languageCode}');")
+    ..writeln("    final jsonContent = await rootBundle.loadString('assets/locale/\${locale.languageCode}.json');")
+    ..writeln('    final Map<String, dynamic> values = json.decode(jsonContent);')
+    ..writeln('    localizations._localisedValues = values;')
+    ..writeln('    return localizations;')
+    ..writeln('  }')
+    ..writeln()
+    ..writeln('  String _t(String key) {')
+    ..writeln('    try {')
+    ..writeln('      final value = _localisedValues[key];')
+    ..writeln("      if (value == null) return '⚠\$key⚠';")
+    ..writeln('      return value;')
+    ..writeln('    } catch (e) {')
+    ..writeln("      return '⚠\$key⚠';")
+    ..writeln('    }')
+    ..writeln('  }')
+    ..writeln();
+  final content = defaultLocaleJson.readAsStringSync();
+  final translations = json.decode(content);
+  translations.forEach((key, value) => sb..writeln("  String get ${CaseUtil.getCamelcase(key)} => _t('$key');")..writeln());
+  sb.writeln('}');
+
+  // Write to file
+  final localizationFile = File(join(Directory.current.path, outputDir, 'localization.dart'));
+  if (!localizationFile.existsSync()) {
+    print('localization.dart does not exists');
+    print('Creating localization.dart ...');
+    localizationFile.createSync(recursive: true);
+  }
+  localizationFile.writeAsStringSync(sb.toString());
+}
+
+void createLocalizationDelegateFile() {
+  print('Creating localization_delegate.dart ...');
+
+  final sb = StringBuffer()
+    ..writeln("import 'dart:async';")
+    ..writeln()
+    ..writeln("import 'package:${params.projectName}/util/locale/localization.dart';")
+    ..writeln("import 'package:flutter/material.dart';")
+    ..writeln()
+    ..writeln('//============================================================//')
+    ..writeln('//THIS FILE IS AUTO GENERATED. DO NOT EDIT//')
+    ..writeln('//============================================================//')
+    ..writeln('class LocalizationDelegate extends LocalizationsDelegate<Localization> {')
+    ..writeln("  static const defaultLocale = Locale('${params.defaultLanguage}');")
+    ..writeln('  static const supportedLanguages = [');
+  params.languages.forEach((language) => sb.writeln("    '$language',"));
+  sb..writeln('  ];')..writeln()..writeln('  static const supportedLocales = [');
+  params.languages.forEach((language) => sb.writeln("    Locale('$language'),"));
+  sb
+    ..writeln('  ];')
+    ..writeln()
+    ..writeln('  Locale newLocale;')
+    ..writeln('  Locale activeLocale;')
+    ..writeln()
+    ..writeln('  LocalizationDelegate({this.newLocale}) {')
+    ..writeln('    if (newLocale != null) {')
+    ..writeln('      activeLocale = newLocale;')
+    ..writeln('    }')
+    ..writeln('  }')
+    ..writeln()
+    ..writeln('  @override')
+    ..writeln('  bool isSupported(Locale locale) => supportedLanguages.contains(locale.languageCode);')
+    ..writeln()
+    ..writeln('  @override')
+    ..writeln('  Future<Localization> load(Locale locale) async {')
+    ..writeln('    activeLocale = newLocale ?? locale;')
+    ..writeln('    return Localization.load(activeLocale);')
+    ..writeln('  }')
+    ..writeln()
+    ..writeln('  @override')
+    ..writeln('  bool shouldReload(LocalizationsDelegate<Localization> old) => true;')
+    ..writeln()
+    ..writeln('}');
+
+  // Write to file
+  final localizationDelegateFile = File(join(Directory.current.path, outputDir, 'localization_delegate.dart'));
+  if (!localizationDelegateFile.existsSync()) {
+    print('localization_delegate.dart does not exists');
+    print('Creating localization_delegate.dart ...');
+    localizationDelegateFile.createSync(recursive: true);
+  }
+  localizationDelegateFile.writeAsStringSync(sb.toString());
+}