Also output code in dart run

pkgs/messages/bin/messages.dart

@@ -1,12 +1,31 @@
 import 'dart:io';
 
+import 'package:messages_builder/builder.dart';
+import 'package:messages_builder/generation_options.dart';
 import 'package:messages_builder/message_data_builder.dart';
 
 Future<void> main(List<String> args) async {
-  await MessagesDataBuilder().run(
-    inputFolder: Directory.fromUri(
-        Directory.current.uri.resolve('assets/').resolve('l10n/')),
-    outputFolder: Directory.fromUri(Directory.current.uri.resolve('assets/')),
-    libOutput: 'lib/messages.g.dart',
-  );
+  final generationOptions = await _generationOptions();
+  final inputFolder = Directory.fromUri(
+      Directory.current.uri.resolve('assets/').resolve('l10n/'));
+  final outputFolder =
+      Directory.fromUri(Directory.current.uri.resolve('assets/'));
+
+  final mapping = await MessageDataFileBuilder(
+    inputFolder: inputFolder,
+    outputFolder: outputFolder,
+    generationOptions: generationOptions,
+  ).run();
+
+  await MessageCallingCodeGenerator(
+    mapping: mapping,
+    options: generationOptions,
+  ).build();
+}
+
+Future<GenerationOptions> _generationOptions() async {
+  final pubspecUri = Directory.current.uri.resolve('pubspec.yaml');
+  final file = File.fromUri(pubspecUri);
+  final pubspecContents = await file.readAsString();
+  return await GenerationOptions.fromPubspec(pubspecContents);
 }

pkgs/messages/example/assets/l10n/testarb.arb

@@ -36,4 +36,4 @@
         }
     },
     "helloAndWelcome2": "Welcome {firstName} von {lastName}!"
-}
+}

pkgs/messages/example/assets/l10n/testarb_de.arb

@@ -5,4 +5,4 @@
     "helloAndWelcome2": "Willkommen {firstName} von {lastName} 2",
     "newMessages": "testde {newMessages, plural, =0 {No new messages} =1 {One new message} two{Two new Messages} other {test {newMessages} new messages}}",
     "newMessages2": "testdse is just a simple message"
-}
+}

pkgs/messages/example/assets/l10n/testarbctx2.arb

@@ -43,4 +43,4 @@
             }
         }
     }
-}
+}

pkgs/messages/example/assets/l10n/testarbctx2_fr.arb

@@ -1,8 +1,9 @@
 {
     "@@context": "AboutPage",
+    "@@locale": "fr",
     "helloAndWelcome": "Welcome {firstName} von {lastName} <",
     "otherMsg": "other",
     "aboutMessage": "Sur {websitename}",
     "newMessages": "test {newMessages, plural, =0 {No new messages} =1 {One new message} two{Two new Messages} other {test {newMessages} new messages}}",
     "newMessages2": "test {gender, select,male {No new messages} female {One new message} other{Two new Messages} other {test {gender} new messages of type {newVar}}}"
-}
+}

pkgs/messages/example/assets/testarb.arb.json

@@ -0,0 +1 @@
+[0,"en","dr9Md951",1,null,["helloAndWelcome","Welcome  von !",[8,0],[13,1]],["helloAndWelcome2","Welcome  von !",[8,0],[13,1]],[6,"newMessages","test ",[3,0,["test  new messages",[5,0]],[0,"No new messages",1,"One new message","w2","Two new Messages"]]],[6,"newMessages2","test ",[4,0,"Two new Messages",{"male":"No new messages","female":"One new message"}]]]

pkgs/messages/example/assets/testarb_de.arb.json

@@ -0,0 +1 @@
+[0,"de","hbDN1MhX",1,null,["helloAndWelcome","Willkommen  von ",[11,0],[16,1]],["helloAndWelcome2","Willkommen  von  2",[11,0],[16,1]],[6,"newMessages","testde ",[3,0,["test  new messages",[5,0]],[0,"No new messages",1,"One new message","w2","Two new Messages"]]],["newMessages2","testdse is just a simple message"]]

pkgs/messages/example/assets/testarbctx2.arb.json

@@ -0,0 +1 @@
+[0,"en","QrwRSsOy",1,null,["aboutMessage","About ",[6,0]],["helloAndWelcome","Welcome  von  <",[8,0],[13,1]],[6,"newMessages","test ",[3,0,["test  new messages",[5,0]],[0,"No new messages",1,"One new message","w2","Two new Messages"]]],[6,"newMessages2","test ",[4,0,"Two new Messages",{"male":"No new messages","female":"One new message"}]],["otherMsg","other"]]

pkgs/messages/example/assets/testarbctx2_fr.arb.json

@@ -0,0 +1 @@
+[0,"fr","390XWry3",1,null,["aboutMessage","Sur ",[4,0]],["helloAndWelcome","Welcome  von  <",[8,0],[13,1]],[6,"newMessages","test ",[3,0,["test  new messages",[5,0]],[0,"No new messages",1,"One new message","w2","Two new Messages"]]],[6,"newMessages2","test ",[4,0,"Two new Messages",{"male":"No new messages","female":"One new message"}]],["otherMsg","other"]]

pkgs/messages/example/pubspec.yaml

@@ -19,7 +19,10 @@ dev_dependencies:
 
 package_options:
   messages_builder:
-    generateMethods: true
-    generateFindById: false
-    generateFindBy: integer
-    pluralSelector: intl
+    generate_methods: true
+    generate_find_by_id: true
+    generate_find_by: integer
+    plural_selector: intl
+    arb_input_folder: assets/l10n/
+    message_output_folder: assets/
+    generated_code_file: lib/messages.g.dart

pkgs/messages/examples/my_application/lib/my_application.dart

@@ -1,6 +1,8 @@
+import 'dart:io';
+
 import 'package:my_shopping_cart/my_shopping_cart.dart';
 
-import 'messages.g.dart';
+import 'src/messages.g.dart';
 
 Future<String> items() async {
   var myShoppingCart = MyShoppingCart();
@@ -9,9 +11,10 @@ Future<String> items() async {
 }
 
 Future<String> sale() async {
-  var myShoppingCart = MyAppMessages();
-  await myShoppingCart.loadAllLocales();
-  return myShoppingCart.current_sale_name(
+  var appMessages = MyAppMessages(
+      (id) => File(id.substring(id.indexOf('/') + 1)).readAsString());
+  await appMessages.loadAllLocales();
+  return appMessages.current_sale_name(
     DateTime.now().month < 4 || DateTime.now().month > 10 ? 'winter' : 'summer',
   );
 }

pkgs/messages/examples/my_shopping_cart/lib/src/my_shopping_cart_base.dart

@@ -1,7 +1,10 @@
+import 'dart:io';
+
 import 'messages.g.dart';
 
 class MyShoppingCart {
-  final _messages = ShoppingCartMessages();
+  final _messages = ShoppingCartMessages(
+      (id) => File(id.substring(id.indexOf('/') + 1)).readAsString());
   Future<void> loadMessages() async => await _messages.loadAllLocales();
 
   String itemsInCart(int number) => _messages.itemsInCart(number);

pkgs/messages/examples/my_shopping_cart/pubspec.yaml

@@ -14,3 +14,9 @@ dependencies:
 dev_dependencies:
   lints: ^4.0.0
   test: ^1.24.0
+
+package_options:
+  messages_builder:
+    arb_input_folder: assets/l10n/
+    message_output_folder: assets/
+    generated_code_file: lib/src/messages.g.dart