status-page.js

/*
	Build using:

	uglifyjs javascript/status-page.js -o files/lib/gluon/status-page/www/static/status-page.js -c -m
*/

'use strict';

(function() {
	var _ = JSON.parse(document.body.getAttribute('data-translations'));

	String.prototype.sprintf = function() {
		var i = 0;
		var args = arguments;

		return this.replace(/%s/g, function() {
			return args[i++];
		});
	};

	function formatNumberFixed(d, digits) {
		return d.toFixed(digits).replace(/\./, _['.'])
	}

	function formatNumber(d, digits) {
		digits--;

		for (var v = d; v >= 10 && digits > 0; v /= 10)
			digits--;

		// avoid toPrecision as it might produce strings in exponential notation
		return formatNumberFixed(d, digits);
	}

	function prettyPackets(d) {
		return _['%s packets/s'].sprintf(formatNumberFixed(d, 0));
	}

	function prettyPrefix(prefixes, step, d) {
		var prefix = 0;

		if (d === undefined)
			return "- ";

		while (d > step && prefix < prefixes.length - 1) {
			d /= step;
			prefix++;
		}

		d = formatNumber(d, 3);
		return d + " " + prefixes[prefix];
	}

	function prettySize(d) {
		return prettyPrefix([ "", "K", "M", "G", "T" ], 1024, d);
	}

	function prettyBits(d) {
		return prettySize(8 * d) + "bps";
	}

	function prettyBytes(d) {
		return prettySize(d) + "B";
	}

	var formats = {
		'id': function(value) {
			return value;
		},
		'decimal': function(value) {