Wrappers for dealing with variations in userscript managers.
Verze ze dne
Tento skript by neměl být instalován přímo. Jedná se o knihovnu, kterou by měly jiné skripty využívat pomocí meta příkazu // @require https://update.greatest.deepsurf.us/scripts/478349/1275706/NH_userscript.js
// ==UserScript==
// ==UserLibrary==
// @name NH_userscript
// @description Wrappers for dealing with variations in userscript managers.
// @version 4
// @license GPL-3.0-or-later; https://www.gnu.org/licenses/gpl-3.0-standalone.html
// @homepageURL https://github.com/nexushoratio/userscripts
// @supportURL https://github.com/nexushoratio/userscripts/issues
// @match https://www.example.com/*
// ==/UserLibrary==
// ==/UserScript==
window.NexusHoratio ??= {};
window.NexusHoratio.userscript = (function userscript() {
'use strict';
/** @type {number} - Bumped per release. */
const version = 4;
/** Library specific exception. */
class UserscriptError extends Error {
/** @inheritdoc */
constructor(...rest) {
super(...rest);
this.name = this.constructor.name;
}
}
/**
* @typedef LicenseData
* @property {string} name - License name.
* @property {string} url - URL pointing to the license.
*/
/**
* Per the *old* GM docs:
* https://sourceforge.net/p/greasemonkey/wiki/Metadata_Block/#license
* @returns {LicenseData} - Extracted from the userscript header.
* @throws {Error} - If cannot be extracted.
*/
function licenseData() {
let license = GM.info.script.license;
if (!license) {
const magic = '// @license ';
// Try a legacy way
const header = GM.info.scriptMetaStr;
if (header) {
const line = header.split('\n').find(l => l.startsWith(magic));
if (line) {
license = line.slice(magic.length).trim();
}
}
}
if (!license) {
const msg = [
'Unable to extract license information from the userscript.',
// eslint-disable-next-line no-magic-numbers
JSON.stringify(GM.info, null, 2),
].join('\n');
throw new UserscriptError(msg);
}
const [name, url] = license.split(';');
return {
name: name.trim(),
url: url.trim(),
};
}
/** @returns {string[]} - Raw text about the current environment. */
function environmentData() {
const gm = GM.info;
const msgs = [`${gm.script.name}: ${gm.script.version}`];
msgs.push('NexusHoratio libraries:');
for (const [lib, obj] of Object.entries(window.NexusHoratio)) {
if (Object.hasOwn(obj, 'version')) {
msgs.push(` ${lib}: ${obj.version}`);
} else {
msgs.push(` ${lib}: Unknown version`);
}
}
msgs.push(`Userscript manager: ${gm.scriptHandler} ${gm.version}`);
if (gm.injectInto) {
msgs.push(` injected into "${gm.injectInto}"`);
}
// Violentmonkey
if (gm.platform) {
msgs.push(`Platform: ${gm.platform.browserName} ` +
`${gm.platform.browserVersion} ${gm.platform.os} ` +
`${gm.platform.arch}`);
}
// Tampermonkey
if (gm.userAgentData) {
let msg = 'Platform: ';
for (const brand of gm.userAgentData.brands.values()) {
msg += `${brand.brand} ${brand.version} `;
}
msg += `${gm.userAgentData?.platform} `;
msg +=
`${gm.userAgentData?.architecture}-${gm.userAgentData?.bitness}`;
msgs.push(msg);
}
return msgs;
}
/**
* Fetches value from userscript storage if granted.
*
* Purposefully no errors if permissions are not granted
*
* @param {string} key - The name of the value to load.
* @param {*} defaultValue - Value if not stored OR not enabled.
* @returns {Promise<*>} - The value fetched or defaultValue.
*/
function getValue(key, defaultValue) {
if (GM.getValue) {
return GM.getValue(key, defaultValue);
}
return Promise.resolve(defaultValue);
}
/**
* Sets a value in userscript storage if granted.
*
* Purposefully no errors if permissions are not granted
*
* @param {string} key - The name to use in the storage.
* @param {*} value - The value to set.
* @returns {Promise<*>} - Always resolves to null; mostly used to ensure
* the write is complete.
*/
function setValue(key, value) {
if (GM.setValue) {
return GM.setValue(key, value);
}
return Promise.resolve(null);
}
return {
version: version,
UserscriptError: UserscriptError,
licenseData: licenseData,
environmentData: environmentData,
getValue: getValue,
setValue: setValue,
};
}());