csv_localizations

A minimal CSV localization package for Flutter.

Store translations for multiple languages in a single CSV file.

One language per column - one translation per row.

Install

Add csc_localizations and flutter_localizations to your pubspec.yaml.

dependencies:
  flutter_localizations: 
    sdk: flutter
  csv_localizations: <last-version>

Add CsvLocalizationsDelegate and supported locales to MaterialApp.

MaterialApp(
  localizationsDelegates: [
    // delegate from flutter_localization
    GlobalMaterialLocalizations.delegate,
    GlobalWidgetsLocalizations.delegate,
    GlobalCupertinoLocalizations.delegate,
    // delegate from csv_localizations
    CsvLocalizationsDelegate(path: 'assets/translations.csv'),
  ],
  supportedLocales: [
    Locale('en'),
    Locale('nb'),
  ],
}

Add a single CSV file asset to your pubspec.yaml.

flutter:
  assets:
    - assets/translations.csv

Note on iOS

Add supported locales to ios/Runner/Info.plist as described here

Example:

<key>CFBundleLocalizations</key>
<array>
	<string>en</string>
	<string>nb</string>
</array>

Format

First row are supported language/country codes. First column are keys for localized values.

key	en	nb
Hi	Hi	Hei
Dog	Dog	Hund
Cat	Cat	Cat

Tip keys can point to local assets like images

Example file:

key,en,nb
Hi,Hi,Hei
Dog,Dog,Hund
Cat,Cat,Katt
my_img,assets/en.png,assets/nb.png

Tip wrap multiline strings in quotation marks

API

Translate text using:

CsvLocalizations.instance.string('Hi')

or add a String extension:

Note: we don't want to pollute the String API by default

extension LocalizedString on String {
  String tr(BuildContext context) => CsvLocalizations.instance.string(this);
}

We use \n as the default end-of-line char, but you can change this via CsvLocalizations.instance.eol

Example

See example.