Leggere file TOML in Dart

In questo articolo vediamo come leggere un file TOML in Dart.

Useremo la libreria toml.

Per l'installazione:

dart pub add toml

Questo il file TOML:

title = "Test TOML"
version = "1.0.0"

[database]
host = "localhost"
port = 5432
username = "root"
password = "password"
databases = ["db_test"]
pool_size = 10
ssl_enabled = true

[server]
host = "0.0.0.0"
port = 8080
debug = false
allowed_hosts = ["*"]

[logging]
level = "INFO"
format = "%(asctime)s - %(levelname)s - %(message)s"
handlers = ["console", "file"]

[cache]
enabled = true
ttl = 3600
max_size = 1000

[features]
enable_api = true
rate_limit = 100

Qui un pò di codice:

import 'dart:io';
import 'package:toml/toml.dart';

void main() async {
  final file = File('test.toml');
  final content = await file.readAsString();

  final document = TomlDocument.parse(content);
  final config = document.toMap();

  print('Title: ${config['title']}');
  print('Version: ${config['version']}');

  print('\nDatabase:');
  print('  Host: ${config['database']['host']}');
  print('  Port: ${config['database']['port']}');
  print('  Username: ${config['database']['username']}');
  print('  Databases: ${config['database']['databases']}');
  print('  SSL: ${config['database']['ssl_enabled']}');

  print('\nServer:');
  print('  Host: ${config['server']['host']}');
  print('  Port: ${config['server']['port']}');
  print('  Debug: ${config['server']['debug']}');

  print('\nLogging:');
  print('  Level: ${config['logging']['level']}');
  print('  Handlers: ${config['logging']['handlers']}');

  print('\nCache:');
  print('  Enabled: ${config['cache']['enabled']}');
  print('  TTL: ${config['cache']['ttl']}');

  print('\nFeatures:');
  print('  API: ${config['features']['enable_api']}');
  print('  Rate Limit: ${config['features']['rate_limit']}');

  final dbHost = config['database']['host'];
  final dbPort = config['database']['port'];
  print('\nConnessione a: $dbHost:$dbPort');
}

Enjoy!