intl_messages

A Simple and easy library for Message Internationalization and Localization (I18N).

Main features:

Structure of messages by package/module.
Dynamic load of assets/files of messages.
Global notification of locale change and registration/discovery of localized messages.
Translation tools (including integration with OpenAI and ChatGPT).

Usage

A simple usage example:

Internationalization file msgs-en.intl:

hello=Hello world! ## A description of the key.

Internationalization file msgs-fr.intl:
```
hello=Bonjour le monde!
```

Dart code:

import 'package:intl_messages/intl_messages.dart';
  
main() async {
  
    var messages = IntlMessages.package("demo");
      
    IntlResourceDiscover discover = IntlResourceDiscover("assets/msgs-", ".intl") ;
    await messages.registerResourceDiscover(discover) ; // Default locale: 'en'. Discovered: assets/msgs-en.intl
      
    MessageBuilder msgHello = messages.msg("hello") ;
      
    print( msgHello.build() ) ; // Hello world!
      
    await messages.setLocale( 'fr' ) ; // Locale set to: 'fr'. Discovered: assets/msgs-fr.intl
      
    print( msgHello.build() ) ; // Bonjour le monde!
  
}

Plurals:

Yes we have plurals ;-)

To use plurals you should declare messages using {...} blocks with conditions zero, one, two and many and respective variable name.

Here's an example of plural usage with variable n:

Internationalization file msgs-en.intl:

total_emails={zero[n]:No e-mails for \$user.|one[n]:One e-mail for \$user.|two[n]:A pair of e-mails for \$user.|many[n]:Received \$n e-mails for \$user.}

Dart code:

import 'package:intl_messages/intl_messages.dart';
  
main() async {
  
    var messages = IntlMessages.package("demo-plural");
      
    IntlResourceDiscover discover = IntlResourceDiscover("assets/msgs-", ".intl") ;
    await messages.registerResourceDiscover(discover) ; // Default locale: 'en'. Discovered: assets/msgs-en.intl
      
    MessageBuilder msgEmail = messages.msg("total_emails") ;
      
    print( msgEmail.build({'n': 0, 'user': 'john@mail.com'}) ) ; // No e-mails for john@mail.com.
    print( msgEmail.build({'n': 1, 'user': 'john@mail.com'}) ) ; // One e-mail for john@mail.com.
    print( msgEmail.build({'n': 2, 'user': 'john@mail.com'}) ) ; // A pair of e-mails for john@mail.com.
    print( msgEmail.build({'n': 8, 'user': 'john@mail.com'}) ) ; // Received 8 e-mails for john@mail.com.
  
}

CLI Tool

You can use the intl_messages CLI tool:

Check an .intl file using a reference file:

  $> intl_messages check --ref msgs-en.intl -f msgs-fr.intl

Format an .intl file entries using a reference file:

  $> intl_messages format --ref msgs-en.intl -f msgs-fr.intl --overwrite

Fix an .intl file using a reference file and OpenAI (ChatGPT):

  $> intl_messages fix --ref msgs-en.intl -f msgs-fr.intl -t openai --overwrite

Features and bugs

Please file feature requests and bugs at the issue tracker.

Author

Graciliano M. Passos: gmpassos@GitHub.

License

Dart free & open-source license.