SAP HANA XS Advanced - Text Bundles within Node.js SAP HANA applications

Add a new route for /routes/textBundle in /routerìndex.js

"use strict";


module.exports = function(app, server){

	app.use("/node", require("./routes/myNode")());

	app.use("/node/excAsync", require("./routes/exerciseAsync")(server));

	app.use("/node/textBundle", require("./routes/textBundle")());
};

As follows:

As you can guess from the code in the first step, you need a file called textBundle.js in your routes folder with the following code

/*eslint no-console: 0, no-unused-vars: 0, consistent-return: 0, new-cap: 0*/
"use strict";
var express = require("express");
var app = express.Router();
var os = require("os");
var TextBundle = require("@sap/textbundle").TextBundle;
var langparser = require("accept-language-parser");

function getLocale(req) {
	var lang = req.headers["accept-language"];
	if (!lang) {
		return;
	}
	var arr = langparser.parse(lang);
	if (!arr || arr.length < 1) {
		return;
	}
	var locale = arr[0].code;
	if (arr[0].region) {
		locale += "_" + arr[0].region;
	}
	return locale;
}

module.exports = function() {

	app.get("/", function(req, res) {
		var bundle = new TextBundle(global.__base + "i18n/messages", getLocale(req));
		res.writeHead(200, {
			"Content-Type": "text/plain; charset=utf-8"
		});
		var greeting = bundle.getText("greeting", [os.hostname(), os.type()]);
		res.end(greeting, "utf-8");
	});
	return app;
};

Take a look at the code you have just added. First, you can see there are two new modules you will need to add as dependencies. Go to your package.json file and add them:

i18n stands for internationalization, the process and means to adapt text, unit of measures and other language-specific aspects of software to the different languages and their norms. The code you added in the previous step is referring to a folder called i18n in the base directory, where the text bundles are. Create the folder and a file called messages.properties with the following content:

greeting = Hello! Welcome to {0} running on {1}.

You can see the code in textBundle.js is getting the language from the request and passing it to the TextBundle library, getting the text greeting. You can add a file called messajes_ja.properties for the translation in Japanese:

greeting = こんにちは！{0}上で実行されているへようこそ{1}

Or the following for the translation in German, in a file called message_de.properties.

greeting = Hallo! Willkommen bei {0} läuft auf {1}

This is what the files should look like: