lpstat implemented in JavaScript

lpstat.js

var ipp = require("ipp");

var uri = "http://localhost:631";
var data = ipp.serialize({
    "operation": 0x4002,  //CUPS-GET-PRINTERS
    "operation-attributes-tag": {
        "attributes-charset": "utf-8",
        "attributes-natural-language": "en",
        "printer-uri": uri
    }
});

/* Patch in "operation": 0x4002" //CUPS-GET-PRINTERS
*/
data[2] = 0x40;
data[3] = 0x02;

ipp.request(uri, data, function(err, res){
    if(err){
        return console.log(err);
    }
    //console.log(res);
    var printers = res["printer-attributes-tag"];
    if (! Array.isArray(printers))
        printers = [printers];
    for (i in printers) {
        printer = printers[i];
	console.log("printer %s %s '%s'"
		    , printer["printer-name"]
		    , printer["printer-more-info"]
		    , printer["printer-make-and-model"]
		   );
    };
})

//
//The spec is not clear on how to handle tag 19. Please open a github issue to help find a solution!
//The spec is not clear on how to handle tag 19. Please open a github issue to help find a solution!
//printer fred http://localhost:631/printers/fred 'Canon PIXMA MX860 - CUPS+Gutenprint v5.2.8-pre1'
//printer PDF http://localhost:631/printers/PDF 'Generic CUPS-PDF Printer'

Opened issue williamkapke/ipp#22