Monitor Google Maps for requests and copy formatted coordinates to four decimal places wherever you click on page
// ==UserScript==
// @name Google Maps Coordinates Copy
// @namespace http://rant.li/boson
// @version 1.2
// @description Monitor Google Maps for requests and copy formatted coordinates to four decimal places wherever you click on page
// @author Boson
// @match https://www.google.com/maps/*
// @grant GM_setClipboard
// @license GNU AGPLv3
// ==/UserScript==
(function() {
'use strict';
function extractCoordinates(url) {
const regex = /!([23])d([-+]?\d+\.\d+)!([34])d([-+]?\d+\.\d+)/g;
let match;
let lastMatch = null;
while ((match = regex.exec(url)) !== null) {
lastMatch = match;
}
if (lastMatch) {
let latitude, longitude;
if (lastMatch[1] === '3') {
latitude = parseFloat(lastMatch[2]);
longitude = parseFloat(lastMatch[4]);
} else {
latitude = parseFloat(lastMatch[4]);
longitude = parseFloat(lastMatch[2]);
}
latitude = latitude.toFixed(4);
longitude = longitude.toFixed(4);
return `${latitude}, ${longitude}`;
}
return null;
}
function copyCoordinates(coordinates) {
if (coordinates) {
GM_setClipboard(coordinates);
}
}
(function(open) {
XMLHttpRequest.prototype.open = function(method, url) {
this.addEventListener('load', function() {
const coordinates = extractCoordinates(url);
copyCoordinates(coordinates);
});
open.apply(this, arguments);
};
})(XMLHttpRequest.prototype.open);
})();