Introduction

locale-url-solver is a nodejs module.

It helps you to to get the locale related to your urls. But first you have to specify your own policy.

It can be used :

• server side with your prefered framework
• in the browser if you require('locale-url-solver') it in your javascript blender

Requirements

You have to be familiar with regular expressions

Install

$ npm install locale-url-solver

How to use ?

const LocaleUrlSolver = require('locale-url-solver');

Init

Init with a litteral object :

LocaleUrlSolver({
    default: 'en',
    locales: {
        'fr': /^http(s)?:\/\/fr\.[^\/]+($|\/)(.*)$/,
        'de|es': /^http(s)?:\/\/([^\/]*\/LANG($|\/)|LANG\.[^\/]+($|\/)(.*)$)/
    }
});

Solve an url to get the locale

Simple patterns

A key is a locale

LocaleUrlSolver({
    default: 'en',
    locales: {
        'de': /^http(s)?:\/\/[^\/]*((.de)|\/de)($|\/)/,
        'fr': /^http(s)?:\/\/fr\.[^\/]+($|\/)(.*)$/
    }
});

LocaleUrlSolver.solve('http://www.website.com');
>> en
LocaleUrlSolver.solve('http://fr.website.com');
>> fr
LocaleUrlSolver.solve('http://fr.website.com/path/is/long');
>> fr
LocaleUrlSolver.solve('http://www.website.de');
>> de
LocaleUrlSolver.solve('http://www.website.com/de');
>> de

Grouped pattern

A key is a group of locales

You may have a global url policy, you can simplify with one pattern

• locale keys are separated by '|'
• the 'LANG' keyword represents a locale

LocaleUrlSolver({
    default: 'en',
    locales: {
        'de|fr|es': /^http(s)?:\/\/([^\/]*\/LANG($|\/)|LANG\.[^\/]+($|\/)(.*)$)/
    }
});

LocaleUrlSolver.solve('http://www.website.com/es/path/is/long/');
>> es

It looks for the 'LANG' word, you can change this keyword

LocaleUrlSolver({
    default: 'en',
    locales: {
        'de|fr|es': /^http(s)?:\/\/([^\/]*\/STUFF($|\/)|STUFF\.[^\/]+($|\/)(.*)$)/
    },
    search:'STUFF'
});

Mix simple patterns and grouped patterns

LocaleUrlSolver({
    default: 'en',
    locales: {
        'fr': /^http(s)?:\/\/fr\.[^\/]+($|\/)(.*)$/,
        'de|es': /^http(s)?:\/\/([^\/]*\/LANG($|\/)|LANG\.[^\/]+($|\/)(.*)$)/
    }
});

Set and get default locale

Default locale can be explicitly set

LocaleUrlSolver({
    default: 'en',
    locales: {
        'fr': /^http(s)?:\/\/fr\.[^\/]+($|\/)(.*)$/,
        'de|es': /^http(s)?:\/\/([^\/]*\/LANG($|\/)|LANG\.[^\/]+($|\/)(.*)$)/
    }
});

LocaleUrlSolver.getDefault();
>> en

If not specified, the default locale is the first key

LocaleUrlSolver({
    locales: {
        'fr': /^http(s)?:\/\/fr\.[^\/]+($|\/)(.*)$/,
        'de|es': /^http(s)?:\/\/([^\/]*\/LANG($|\/)|LANG\.[^\/]+($|\/)(.*)$)/
    }
});

LocaleUrlSolver.getDefault();
>> fr

Get the locale keys list

LocaleUrlSolver.getLocales();
>> [ 'de', 'en', 'fr', 'it' ]

Is a locale set in my rules ?

LocaleUrlSolver.isSet('it');
>> true

Perfomances

The first match returns the locale. So the order of the rules is important:

• add a default locale rule at the first position.
• order the rules according to your website traffic.

Test coverage

This module is 100% covered by 33 tests