added support for flutter 'lib\' dir

pkgs/intl_translation/CHANGELOG.md

@@ -1,3 +1,6 @@
+## 0.19.1-dev
+  * Added support for Flutter `lib/` folder.
+
 ## 0.19.0-dev
   * Always generate null safe code, remove `null-safe` flag.
   * Add example for `he` locale.

pkgs/intl_translation/README.md

@@ -18,6 +18,15 @@ dart run intl_translation:extract_to_arb --output-dir=target/directory \
     my_program.dart more_of_my_program.dart
 ```
 
+This support passing a folder directory to it that contains `.dart` files. The code will automatically extract all `.dart` files
+in the folder AND its subfolders as well. This means it can be used for flutter `lib/` folder as well.
+For example, to automatically extract all files in your `lib/` folder, you can use
+ `--lib-dir` to provide path to `lib` directory. E.g run in project root folder
+```dart
+dart run intl_translation:extract_to_arb --output-dir=target/directory --lib-dir=./lib
+```
+
+
 This supports wildcards. For example, to extract messages from a series of files in path `lib/**/*.dart`, you can run
 ```dart
 dart run intl_translation:extract_to_arb --output-dir=target/directory

pkgs/intl_translation/bin/extract_to_arb.dart

@@ -17,10 +17,13 @@ import 'package:intl_translation/src/arb_generation.dart';
 import 'package:intl_translation/src/directory_utils.dart';
 import 'package:path/path.dart' as path;
 
-void main(List<String> args) {
+void main(List<String> args) async {
   var targetDir = '.';
   var outputFilename = 'intl_messages.arb';
   String? sourcesListFile;
+  String? libDir;
+  // ignore: omit_local_variable_types
+  List<String> filesInFlutterLib = [];
   var transformer = false;
   var parser = ArgParser();
   var extract = MessageExtraction();
@@ -99,6 +102,11 @@ void main(List<String> args) {
     help: "Fail for messages that don't have a description.",
     callback: (val) => extract.descriptionRequired = val,
   );
+  parser.addOption(
+    'lib-dir',
+    callback: (value) => libDir = value,
+    help: 'Directory to lib/* folder so that all files are parsed',
+  );
 
   var argResults = parser.parse(args);
   var showHelp = (argResults['help'] as bool?) ?? false;
@@ -119,9 +127,14 @@ void main(List<String> args) {
     allMessages['@@last_modified'] = DateTime.now().toIso8601String();
   }
 
+  if (libDir != null) {
+    filesInFlutterLib = await getDartFilesInFolder(libDir!);
+  }
+
   var dartFiles = <String>[
     ...args.where((x) => x.endsWith('.dart')),
-    ...linesFromFile(sourcesListFile)
+    ...linesFromFile(sourcesListFile),
+    ...filesInFlutterLib
   ];
   dartFiles
       .map((dartFile) => extract.parseFile(File(dartFile), transformer))

pkgs/intl_translation/lib/src/directory_utils.dart

@@ -3,8 +3,8 @@
 // BSD-style license that can be found in the LICENSE file.
 
 import 'dart:io';
-
 import 'package:path/path.dart' as path;
+import 'ffile_system_entity.dart';
 
 /// Takes a file with a list of file paths, one per line, and returns the names
 /// as paths in terms of the directory containing [fileName].
@@ -30,3 +30,51 @@ String _relativeToBase(String base, String filename) {
     return filename;
   }
 }
+
+Future<List<String>> getDartFilesInFolder(String folderPath) async {
+  var dir = Directory(folderPath);
+  // ignore: omit_local_variable_types
+  List<String> results = [];
+  if (!dir.existsSync()) {
+    return results;
+  }
+  var filesAndFolders = await getFilesAndFoldersInDir(dir);
+  for (var i = 0; i < filesAndFolders.length; i++) {
+    var entity = filesAndFolders[i];
+    if (entity.isDartFile) {
+      results.add(entity.path);
+      continue;
+    }
+    if (entity.isDir) {
+      var results2 = await getDartFilesInFolder(entity.path);
+      results = [...results, ...results2];
+      continue;
+    }
+  }
+  return results;
+}
+
+/// Scan directory and return all the files and folders
+Future<List<FFileSystemEntity>> getFilesAndFoldersInDir(Directory dir) async {
+  // ignore: omit_local_variable_types
+  List<FFileSystemEntity> results = [];
+  // ignore: omit_local_variable_types
+  Stream<FileSystemEntity> contents = dir.list(
+    recursive: false,
+    followLinks: false,
+  );
+  await for (FileSystemEntity entity in contents) {
+    var type = await FileSystemEntity.type(entity.path);
+    var entity2 = FFileSystemEntity(
+      entity: entity,
+      type: type,
+    );
+
+    if (!entity2.isDir && !entity2.isFile) {
+      continue;
+    }
+
+    results.add(entity2);
+  }
+  return results;
+}

pkgs/intl_translation/lib/src/ffile_system_entity.dart

@@ -0,0 +1,25 @@
+// Copyright (c) 2023, 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.
+
+import 'dart:io';
+
+///This class tries to improve code speed
+///by adding cache functionality as well as helper
+///methods to FileSystemEntity
+
+class FFileSystemEntity {
+  final FileSystemEntity entity;
+  final FileSystemEntityType type;
+
+  FFileSystemEntity({
+    //cache the type
+    required this.type,
+    required this.entity,
+  });
+
+  bool get isDir => type == FileSystemEntityType.directory;
+  bool get isFile => type == FileSystemEntityType.file;
+  bool get isDartFile => entity.path.toLowerCase().endsWith('.dart');
+  String get path => entity.path;
+}

pkgs/intl_translation/pubspec.yaml

@@ -1,5 +1,5 @@
 name: intl_translation
-version: 0.19.0-dev
+version: 0.19.1-dev
 description: >-
   Contains code to deal with internationalized/localized messages,
   date and number formatting and parsing, bi-directional text, and