gettext 1.0.1

  • Example
  • Installing
  • Versions
  • 84

Dart Gettext #

A Dart implementation of gettext, a localization framework.

Rewritten to dart of node-gettext package.

Also works perfectly with flutter.

Features #

  • Supports domains, contexts and plurals
  • Ships with plural forms for 136 languages
  • Change locale or domain on the fly
  • Emits events for internal errors, such as missing translations

Usage #

import "package:gettext/gettext.dart";

final gt = new Gettext(onWarning: print);

Load data from json:

new File("./en_US.json").readAsString().then(
   (data) {
       final json = json.decode(data["translations"]);
       final gt = new Gettext();
       gt.addTranslations('en_US', Translations.fromJSON(json));

Json content:

  "charset": "utf-8",
  "headers": {
    "mime-version": "1.0",
    "content-type": "text/plain; charset=utf-8",
    "content-transfer-encoding": "8bit",
    "language": "es-ES",
    "plural-forms": "nplurals=2; plural=(n!=1);",
  "translations": {
    "": {
      "Hello": {
        "msgid": "Hello",
        "comments": {
           "translator": "Normal string"
        "msgstr": [
      "An apple": {
        "msgid": "1 apple",
        "comments": {
           "translator": "Plural string"
        "msgstr": [
           "una manzana",
           "%d manzanas"

Change locale:

gt.locale = "en_US";

Change default domain:

gt.domain = "types";

Translate messages:


Translate messages with plural forms:

gt.ngettext("An apple", "%d apples", 3); // returns "%d apples"


  • gettext(String msgid, {String domain, String context}) → String
  • ngettext(String msgid, String msgplural, int count, {String domain, String context}) → String

Working with Flutter #

import 'package:flutter/widgets.dart';
import 'package:sprintf/sprintf.dart';
import 'package:gettext/gettext.dart';

class GettextLocalizations {
  final Gettext gt;


  static GettextLocalizations of(BuildContext context) {
    return Localizations.of<GettextLocalizations>(
        context, GettextLocalizations);

  String __(
      String msgid, [
        List args = const [],
      ]) {
    return sprintf(gt.gettext(msgid), args);

  String __n(
      String msgid,
      String msgidPlural,
      int count, [
        List arg = const [],
      ]) {
    return sprintf(
      gt.ngettext(msgid, msgidPlural, count),

class GettextLocalizationsDelegate
    extends LocalizationsDelegate<GettextLocalizations> {
  final gettext = new Gettext();

  bool isSupported(Locale locale) => true;

  bool shouldReload(LocalizationsDelegate<GettextLocalizations> old) => false;

  Future<GettextLocalizations> load(Locale locale) async {
    final data = await rootBundle.loadString("l10n/$locale.json");

    final jsonData = json.decode(data);

    gettext.locale = locale.toString();
    gettext.addTranslations(locale.toString(), Translations.fromJson(jsonData));

    return GettextLocalizations(gettext);

See full example

1.0.1 #

Added changelog and flutter example

1.0.0 #

First implementation


example #

A new Flutter project.

Getting Started #

For help getting started with Flutter, view our online documentation.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  gettext: ^1.0.1

2. Install it

You can install packages from the command line:

with pub:

$ pub get

with Flutter:

$ flutter packages get

Alternatively, your editor might support pub get or flutter packages get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:gettext/gettext.dart';
Version Uploaded Documentation Archive
1.0.1 Nov 11, 2018 Go to the documentation of gettext 1.0.1 Download gettext 1.0.1 archive
1.0.0 Nov 11, 2018 Go to the documentation of gettext 1.0.0 Download gettext 1.0.0 archive
Describes how popular the package is relative to other packages. [more]
Code health derived from static analysis. [more]
Reflects how tidy and up-to-date the package is. [more]
Weighted score of the above. [more]
Learn more about scoring.

We analyzed this package on Feb 20, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.1.0
  • pana: 0.12.13+1


Detected platforms: Flutter, web, other

No platform restriction found in primary library package:gettext/gettext.dart.

Health suggestions

Fix lib/gettext.dart. (-0.50 points)

Analysis of lib/gettext.dart reported 1 hint:

line 40 col 21: Use = to separate a named parameter from its default value.

Maintenance suggestions

The package description is too short. (-1 points)

Add more detail to the description field of pubspec.yaml. Use 60 to 180 characters to describe the package, what it does, and its target use case.


Package Constraint Resolved Available
Direct dependencies
Dart SDK >=1.0.0 <3.0.0
Dev dependencies
test any