Node.js script to concat .csv files with translations into a single .json file.

build_translations.js

const fs = require('fs');

const localizationDir = "";
const buildDir = "build";

function showHelp() {
    console.log(
        "\nUsage: "
        + "node "
        + process.argv[1].substring(process.argv[1].lastIndexOf("\\") + process.argv[1].lastIndexOf("/") + 2)
        + " [options]" + "\n\n"
        + " help \t\t\t show this help\n"
        + "\n"
        + " list \t\t\t show all languages and their codes\n"
        + " build \t\t\t concat all .csv files into a .json\n"
        + " build [language_code]\t only build translations for language with language code\n"
        + "\n"
    );
}

// Supported languages
const languages = [
    {code: "ar", name: "Arabic"},
    {code: "bs", name: "Bosnian"},
    {code: "cs", name: "Czech"},
    {code: "de", name: "German"},
    {code: "el", name: "Greek"},
    {code: "en", name: "English"},
    {code: "es-ES", name: "Spanish", folder: "es"},
    {code: "fa", name: "Persian"},
    {code: "fil", name: "Filipino"},
    {code: "fr", name: "French"},
    {code: "hr", name: "Croatian"},
    {code: "id", name: "Indonesian"},
    {code: "ja", name: "Japanese"},
    {code: "lv", name: "Latvian"},
    {code: "pl", name: "Polish"},
    {code: "pt-BR", name: "PortugueseBrazilian", folder: "pt_BR"},
    {code: "ro", name: "Romanian"},
    {code: "ru", name: "Russian"},
    {code: "sr", name: "Serbian", folder: "sr_Latn"},
    {code: "sv-SE", name: "Swedish", folder: "sv"},
    {code: "tr", name: "Turkish"},
];

function buildTranslations(selectedLang) {
    languages.forEach((lang) => {
        // If running for a specific language, skip others.
        if (selectedLang && selectedLang != lang.code)
            return;

        let path = localizationDir + (lang.folder ? lang.folder : lang.code) + "/";
        if (!fs.existsSync(path)) {
            console.log("The folder is missing. " + path);
            return;
        }
        let data = {};

        try {
            let files = fs.readdirSync(path);
            for (let i = 0; i < files.length; i++) {
                let lines = fs.readFileSync(path + files[i], {encoding: 'utf-8'}).split("\n");
                for (let l = 0; l < lines.length; l++) {
                    let key = lines[l].substr(1, lines[l].indexOf(':') - 2);
                    let value = lines[l].substr(lines[l].indexOf(':') + 2);
                    value = value.substr(0, value.length - 2);
                    if (key && value && key != "source") {
                        data[key] = value.replace(/\"\"/g,"\"");
                    }
                }
            }
            // Test
            // console.log(JSON.stringify(data));
        } catch (err) {
            console.error(err);
        }

        // Save as JSON
        try {
            if (!fs.existsSync(buildDir)) {
                fs.mkdirSync(buildDir);
            }
            fs.writeFileSync(buildDir + "/" + lang.name + ".json", "[" + JSON.stringify(data, null, 4) + "]");
            console.log("The file was saved! ");
        } catch (err) {
            console.error(err);
        }
    });
}

if (process.argv.length > 2) {
    if (process.argv[2].indexOf("list") != -1) {
        console.info("Code\t Folder\t Name");
        languages.forEach((lang) => {
            console.log(lang.code + "\t " + (lang.folder ? lang.folder : lang.code) + "\t " + lang.name);
        });
    } else if (process.argv[2].indexOf("build") != -1) {
        buildTranslations(process.argv[3]);
    } else {
        showHelp();
    }
} else {
    showHelp();
}