// This is the Interpol, I use it to make Text Interpolation in Javascript
// using #{this_format} ...Ruby's Way

var Interpol = function (text, par, fun) {
	text = text || "";
	par = par || {};
	fun = fun || function(x){ return x };
    return text.replace(/#{[^\}]+}/g, function(m, p, ft){
		var rt = m.substr(2);
		rt = rt.substr(0, rt.length - 1);
		rt = par[rt].toString() || "";
		return fun(rt);
	})
};


// And this is how I use it
// Parameters: [Text], [Things to interpolate], [cool function]

var text1 = Interpol("Hello, I'm #{name} #{last}", {name: "Herson", last: "salinas"});
var text2 = Interpol("Hello, I'm #{name} #{last}", {name: "Herson", last: "salinas"}, function(x){
	return x.toUpperCase();
});
console.log(text1);
console.log(text2);

var sqlParse = function (str) {
	return str.replace(/\\/g, "\\\\").replace(/'/g, "''");
}

var query = "select * from users where username = '#{name}' and password = md5('#{pass}')";
var sql = Interpol(query, {name: "Bobby", pass: "I'm the Fisher"}, sqlParse);

console.log(sql);