Task: Add TextFormatter function to format the string with args

CHANGELOG.md

@@ -26,4 +26,5 @@
 
 ## 1.0.6
 - Add async function support
-- Add functions for set and remove for system config and file functions
+- Add functions for set and remove for system config and file functions
+- Add TextFormatter for format the string with args

example/text_formatter_example.dart

@@ -0,0 +1,14 @@
+import 'package:configurable/text_formatter.dart';
+
+void main(List<String> args) {
+  var text1 = 'Hello, {0}, then do this it by {1}!';
+  var text2 = 'Hello, {firstName}, then do this it by {lastName}!';
+  var result1 = TextFormatter(text1).format(['Sambo', 'Chea']);
+  var result2 = TextFormatter(text2).decorate({
+    'firstName': 'Sambo',
+    'lastName': 'Chea',
+  });
+
+  print('Result 1 => $result1');
+  print('Result 2 => $result2');
+}

lib/text_formatter.dart

@@ -0,0 +1,33 @@
+class TextFormatter {
+  String? text;
+
+  TextFormatter(String? text) {
+    this.text = text;
+  }
+
+  String? format(List<dynamic> args) {
+    if (text == null) {
+      return null;
+    }
+
+    var msg = text;
+    args.asMap().forEach((index, element) {
+      msg = msg?.replaceAll('{$index}', element);
+    });
+
+    return msg;
+  }
+
+  String? decorate(Map<String, dynamic> args) {
+    if (text == null) {
+      return null;
+    }
+
+    var msg = text;
+    args.forEach((index, element) {
+      msg = msg?.replaceAll('{$index}', element);
+    });
+
+    return msg;
+  }
+}

test/text_formatter_test.dart

@@ -0,0 +1,15 @@
+import 'package:configurable/text_formatter.dart';
+import 'package:test/test.dart';
+
+void main() {
+  test('text formatter function format', () {
+    var text1 = 'Hello, {0}!';
+    var result1 = TextFormatter(text1).format(['Sambo']);
+
+    var text2 = 'Hello, {name}!';
+    var result2 = TextFormatter(text2).decorate({'name': 'Chea'});
+
+    expect('Hello, Sambo!', result1);
+    expect('Hello, Chea!', result2);
+  });
+}