madbob/GASdottoNG

(function() {

    var translate = function(text)
    {
        var xlate = translateLookup(text);

        if (typeof xlate == "function")
        {
            xlate = xlate.apply(this, arguments);
        }
        else if (arguments.length > 1)
        {
            var aps = Array.prototype.slice;
            var args = aps.call( arguments, 1 );

            xlate = formatter(xlate, args);
        }

        return xlate;
    };

    // I want it available explicity as well as via the object
    translate.translate = translate;

    //from https://gist.github.com/776196 via http://davedash.com/2010/11/19/pythonic-string-formatting-in-javascript/
    var defaultFormatter = (function() {
        var re = /\{([^}]+)\}/g;
        return function(s, args) {
            return s.replace(re, function(_, match){ return args[match]; });
        }
    }());
    var formatter = defaultFormatter;
    translate.setFormatter = function(newFormatter)
    {
        formatter = newFormatter;
    };

    translate.format = function()
    {
        var aps = Array.prototype.slice;
        var s = arguments[0];
        var args = aps.call( arguments, 1 );

        return formatter(s, args);
    };

    var dynoTrans = null;
    translate.setDynamicTranslator = function(newDynoTrans)
    {
        dynoTrans = newDynoTrans;
    };

    var translation = null;
    translate.setTranslation = function(newTranslation)
    {
        translation = newTranslation;
    };

    function translateLookup(target)
    {
        if (translation == null || target == null)
        {
            return target;
        }

        if (target in translation == false)
        {
            if (dynoTrans != null)
            {
                return dynoTrans(target);
            }
            return target;
        }

        var result = translation[target];
        if (result == null)
        {
            return target;
        }

        return result;
    };

    window._ = translate;
})();