express-guess-lang

Simple express middleware that recognizes the region and languages of http client requests.

Install

npm install express-guess-lang

Setup

The init method takes an optional options object for further configuration.

var express = require('express')
var expressGuessLang = require('express-guess-lang')
...

var app = express()
...

app.configure(function () {
    ...

    app.use(expressGuessLang.init())
    app.use(app.router)
    ...
})

Layout of the optional options object. The default options come to use, when no localization information could be inferred.

var opts = {
    defaultLanguage: 'de',
    defaultRegion: 'DE'
}

app.configure(function () {
    ...

    app.use(expressGuessLang.init(opts))
    app.use(app.router)
    ...
})

Usage

The request object is enriched with three functions to retrieve language and region data.

app.get('/', function (request, response) {
    var languages = request.getLanguages()
    var regions = request.getRegions()
    var preferedLanguage = request.getLikelyLanguage()
    var acceptable = request.isAppropriate('en')
})

Doc

Retrieve the region of the user:

getRegions: array
//Example: ['US']

Retrieve all languages supported by the user:

getLanguages: array
//Example: [{ lang: 'de', likelihood: 0.5 }, {lang: 'en', likelihood: 0.8}]

Retrieve the prefered language of the user:

getLikelyLanguage: string
//Example: 'en'

Check if a language is appropriate for the user:

isAppropriate('en'): boolean
//Example: true

Licensed under MIT

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.