35922740e6
It is not supported by all browsers yet. Also change load display always to display 2 decimal digits (as it is read from the kernel with 2 decimal digits). Fixes #606
93 lines
2.2 KiB
JavaScript
93 lines
2.2 KiB
JavaScript
"use strict"
|
|
define([ "bacon" ], function (Bacon) {
|
|
function get(url) {
|
|
return Bacon.fromBinder(function(sink) {
|
|
var req = new XMLHttpRequest()
|
|
req.open("GET", url)
|
|
|
|
req.onload = function() {
|
|
if (req.status === 200)
|
|
sink(new Bacon.Next(req.response))
|
|
else
|
|
sink(new Bacon.Error(req.statusText))
|
|
sink(new Bacon.End())
|
|
}
|
|
|
|
req.onerror = function() {
|
|
sink(new Bacon.Error("network error"))
|
|
sink(new Bacon.End())
|
|
}
|
|
|
|
req.send()
|
|
|
|
return function () {}
|
|
})
|
|
}
|
|
|
|
function getJSON(url) {
|
|
return get(url).map(JSON.parse)
|
|
}
|
|
|
|
function buildUrl(ip, object, param) {
|
|
var url = "http://[" + ip + "]/cgi-bin/" + object
|
|
if (param) url += "?" + param
|
|
|
|
return url
|
|
}
|
|
|
|
function request(ip, object, param) {
|
|
return getJSON(buildUrl(ip, object, param))
|
|
}
|
|
|
|
function dictGet(dict, key) {
|
|
var k = key.shift()
|
|
|
|
if (!(k in dict))
|
|
return null
|
|
|
|
if (key.length === 0)
|
|
return dict[k]
|
|
|
|
return dictGet(dict[k], key)
|
|
}
|
|
|
|
function localizeNumber(d) {
|
|
var sep = ','
|
|
return d.replace('.', sep)
|
|
}
|
|
|
|
function formatNumberFixed(d, digits) {
|
|
return localizeNumber(d.toFixed(digits))
|
|
}
|
|
|
|
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 haversine() {
|
|
var radians = Array.prototype.map.call(arguments, function(deg) { return deg / 180.0 * Math.PI })
|
|
var lat1 = radians[0], lon1 = radians[1], lat2 = radians[2], lon2 = radians[3]
|
|
var R = 6372.8 // km
|
|
var dLat = lat2 - lat1
|
|
var dLon = lon2 - lon1
|
|
var a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.sin(dLon / 2) * Math.sin(dLon / 2) * Math.cos(lat1) * Math.cos(lat2)
|
|
var c = 2 * Math.asin(Math.sqrt(a))
|
|
return R * c
|
|
}
|
|
|
|
return { buildUrl: buildUrl
|
|
, request: request
|
|
, getJSON: getJSON
|
|
, dictGet: dictGet
|
|
, formatNumber: formatNumber
|
|
, formatNumberFixed: formatNumberFixed
|
|
, haversine: haversine
|
|
}
|
|
})
|