ipp-server/lib/groups.js

Create a printer on the network

"use strict";

var C     = require("ipp-encoder").CONSTANTS;
var utils = require("./utils");

exports.operationAttributesTag   = operationAttributesTag;
exports.unsupportedAttributesTag = unsupportedAttributesTag;
exports.printerAttributesTag     = printerAttributesTag;
exports.jobAttributesTag         = jobAttributesTag;

function operationAttributesTag(status) {
	return {
		tag        : C.OPERATION_ATTRIBUTES_TAG,
		attributes : [{
			tag   : C.CHARSET,
			name  : "attributes-charset",
			value : "utf-8"
		}, {
			tag   : C.NATURAL_LANG,
			name  : "attributes-natural-language",
			value : "en-us"
		}, {
			tag   : C.TEXT_WITH_LANG,
			name  : "status-message",
			value : { lang: "en-us", value: status }
		}]
	};
}

function unsupportedAttributesTag(attributes, requested) {
	return {
		tag        : C.UNSUPPORTED_ATTRIBUTES_TAG,
		attributes : unsupportedAttributes(attributes, requested)
	};
}

function printerAttributesTag(attributes) {
	return {
		tag        : C.PRINTER_ATTRIBUTES_TAG,
		attributes : attributes
	};
}

function jobAttributesTag(attributes) {
	return {
		tag        : C.JOB_ATTRIBUTES_TAG,
		attributes : attributes
	};
}

function unsupportedAttributes(attributes, requested) {
	var supported = attributes.map(function (attr) {
		return attr.name;
	});

	if (!requested) return [];

	requested = utils.removeStandardAttributes(requested);

	return requested
		.filter(function (name) {
			return !~supported.indexOf(name);
		})
		.map(function (name) {
			return {
				tag   : C.UNSUPPORTED,
				name  : name,
				value : "unsupported"
			};
		});
}