Cgit: copy commit reference

Adds a "Copy commit reference" button to every commit page on Cgit websites.

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 or Violentmonkey 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.

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

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         Cgit: copy commit reference
// @namespace    https://andrybak.dev
// @version      6
// @license      AGPL-3.0-only
// @author       Andrei Rybak
// @description  Adds a "Copy commit reference" button to every commit page on Cgit websites.
// @icon         https://git.zx2c4.com/cgit/plain/cgit.png
// @homepageURL  https://github.com/rybak/copy-commit-reference-userscript
// @supportURL   https://github.com/rybak/copy-commit-reference-userscript/issues
// @match        https://git.kernel.org/pub/scm/*/commit/*
// @match        https://git.zx2c4.com/*/commit/*
// @match        https://git.savannah.gnu.org/cgit/*/commit/*
// @match        https://cgit.freebsd.org/*/commit/*
// @match        https://git.kernel.dk/cgit/*/commit/*
// @require      https://cdn.jsdelivr.net/gh/rybak/userscript-libs@e86c722f2c9cc2a96298c8511028f15c45180185/waitForElement.js
// @require      https://cdn.jsdelivr.net/gh/rybak/copy-commit-reference-userscript@d4905c247fedb40932bf07eebf3bf4c838e8d3d7/copy-commit-reference-lib.js
// @grant        none
// ==/UserScript==

/*
 * Copyright (C) 2023-2024 Andrei Rybak
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

(function () {
	'use strict';

	/*
	 * Implementation for cgit.
	 * Documentation:
	 *   - https://git.zx2c4.com/cgit/about/
	 *
	 * Example URLs for testing:
	 *   - https://git.kernel.org/pub/scm/git/git.git/commit/?h=main&id=1f0fc1db8599f87520494ca4f0e3c1b6fabdf997
	 *   - https://git.kernel.org/pub/scm/git/git.git/commit/?h=v2.42.0&id=43c8a30d150ecede9709c1f2527c8fba92c65f40
	 */
	class Cgit extends GitHosting {
		getTargetSelector() {
			return 'body > #cgit > .content > table.commit-info > tbody > tr:nth-child(3) td.sha1, body > #cgit > .content > table.commit-info > tbody > tr:nth-child(3) td.oid';
		}

		wrapButtonContainer(innerContainer) {
			const container = document.createElement('span');
			container.append(" (", innerContainer, ")");
			return container;
		}

		getButtonText() {
			// use all lowercase for consistency with the rest of the UI
			return "copy commit reference";
		}

		getFullHash() {
			const commitAnchor = document.querySelector('body > #cgit > .content > table.commit-info > tbody > tr:nth-child(3) td.sha1 a, body > #cgit > .content > table.commit-info > tbody > tr:nth-child(3) td.oid a');
			return commitAnchor.innerText;
		}

		getDateIso(hash) {
			const authorDateCell = document.querySelector('body > #cgit > .content > table.commit-info > tbody > tr:nth-child(1) td:nth-child(3)');
			return authorDateCell.innerText.slice(0, 'YYYY-MM-DD'.length);
		}

		getCommitMessage(hash) {
			const subjElem = document.querySelector('body > #cgit > .content > .commit-subject');
			/*
			 * Sometimes `subjElem` contains a `<span class="decoration">`,
			 * most notably, on tagged commits.  Avoid including the contents
			 * of this <span> tag by just taking the text of the first node,
			 * which is a text node.
			 */
			const subj = subjElem.childNodes[0].textContent;
			const body = document.querySelector('body > #cgit > .content > .commit-msg').innerText;
			/*
			 * Even though vast majority will only need `subj`, gather everything and
			 * let downstream code handle paragraph splitting.
			 */
			return subj + '\n\n' + body;
		}
	}

	CopyCommitReference.runForGitHostings(new Cgit());
})();