csv_localizations

A minimal CSV localization package for Flutter.

Store translations for multiple languages in a single CSV file.

Consider toml_localizations or yaml_localizations for separate files per language.

Usage

See example.

Install

Add to your pubspec.yaml

dependencies:
  csv_localizations:

Add CSV asset file

Add a CSV file as an asset and describe it in your pubspec.yaml

Tip: Create a Spreadsheet via Google docs, then export as CSV

flutter:
  assets:
    - assets/lang.csv

Example CSV file

key,en,nb
Hi,Hi,Hei
my_img,assets/en.png,assets/nb.png
Multiline,"This
  is a multiline 
string","Denne
  teksten går over flere 
linjer"

Tip: keys can point to local assets like images etc.

Format

First row lists supported language codes.

First column are keys for localized values.

Wrap multiline strings in quotation marks.

We use the csv package for parsing, but we use \n as the default eol and replace \r\n with \n before parsing.

MaterialApp

Add CsvLocalizationsDelegate to MaterialApp and set supportedLocales using language codes.

MaterialApp(
  localizationsDelegates: [
    ... // global delegates
    CsvLocalizationsDelegate(
      CsvLocalizations(
        assetPath: 'assets/lang.csv',
        supportedLanguageCodes: [ 'en', 'nb', ],
      ),
    ),
  ],
  supportedLocales: [ Locale('en'), Locale('nb'), ],
}

API

Translate strings using

CsvLocalizations.of(context).string('Hi')

We keep the API simple, but you can easily add an extension method to String like this:

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

Note on iOS

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

Example:

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

Libraries

csv_localizations