Load .gsheet link from local file

Discover Google Docs link in .gsheet file and navigate to it. 2020-03-02.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(У мене вже є менеджер скриптів, дайте мені встановити його!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Load .gsheet link from local file
// @version     0.2
// @description Discover Google Docs link in .gsheet file and navigate to it. 2020-03-02.
// @author      Jefferson "jscher2000" Scher
// @namespace   JeffersonScher
// @copyright   Copyright 2020 Jefferson Scher
// @license     BSD-3-Clause
// @match       file:///*/*
// @grant       GM_registerMenuCommand
// @run-at      document-idle
// ==/UserScript==

function loadSheet(){
    // Parse document text as JSON
  var oSheetInfo = JSON.parse(document.body.textContent);
  // Replace current page with linked page
  if (oSheetInfo.url.indexOf('https://docs.google.com/') === 0){
    // Go directly to HTTPS link
    location.replace(oSheetInfo.url);
  } else if (oSheetInfo.url.indexOf('http://docs.google.com/') === 0){
    // Upgrade HTTP link
    location.replace(oSheetInfo.url.replace('http://', 'https://'));
  } else {
    // Ask user about WTF link
    if (confirm('Navigate to "' + oSheetInfo.url + '"?')){
      location.replace(oSheetInfo.url);
    }
  }
}

// Detect documents whose paths end with .gsheet and run loadSheet(), add menu item
if (location.pathname.indexOf('.gsheet') > -1 && location.pathname.slice(-7) == '.gsheet'){
  window.setTimeout(loadSheet, 50);
  // This should work in Violentmonkey and Tampermonkey, but unfortunately not Greasemonkey.
  try {
    GM_registerMenuCommand("Navigate now", loadSheet);
  } catch (err) {
    console.log('Error adding Load .gsheet from local file menu items: ' + err.message);
  }
}