☰

Github Commit Diff

Adds button to show diff (or patch) file for commit

当前为 2016-04-27 提交的版本，查看 最新版本。

// ==UserScript==
// @name        Github Commit Diff
// @namespace   https://github.com/jerone/UserScripts
// @description Adds button to show diff (or patch) file for commit
// @author      jerone
// @copyright   2014+, jerone (http://jeroenvanwarmerdam.nl)
// @license     GNU GPLv3
// @homepage    https://github.com/jerone/UserScripts/tree/master/Github_Commit_Diff
// @homepageURL https://github.com/jerone/UserScripts/tree/master/Github_Commit_Diff
// @supportURL  https://github.com/jerone/UserScripts/issues
// @contributionURL https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=VCYMHWQ7ZMBKW
// @icon        https://github.com/fluidicon.png
// @include     https://github.com/*
// @version     1.6.3
// @grant       none
// ==/UserScript==
/* global unsafeWindow */

(function() {

    function addButton() {
        var e;
        if ((/\/commit\//.test(location.href) || /\/compare\//.test(location.href)) && (e = document.getElementById("toc"))) {

            var r = e.querySelector(".GithubCommitDiffButton");
            if (r) {
                r.parentElement.removeChild(r);
            }

            var b = e.querySelector(".toc-diff-stats");

            const s = document.createElementNS("http://www.w3.org/2000/svg", "svg");
            s.classList.add("octicon", "octicon-diff");
            s.setAttributeNS(null, "height", 16);
            s.setAttributeNS(null, "width", 14);
            s.setAttributeNS(null, "viewBox", "0 0 14 16");

            const p = document.createElementNS("http://www.w3.org/2000/svg", "path");
            p.setAttributeNS(null, "d", "M6 7h2v1H6v2h-1V8H3v-1h2V5h1v2zM3 13h5v-1H3v1z m4.5-11l3.5 3.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V3c0-0.55 0.45-1 1-1h6.5z m2.5 4L7 3H1v12h9V6zM8.5 0S3 0 3 0v1h5l4 4v8h1V4.5L8.5 0z");
            s.appendChild(p);

            var a = document.createElement("a");
            a.classList.add("btn", "btn-sm", "tooltipped", "tooltipped-n");
            a.setAttribute("href", getPatchOrDiffHref("diff"));
            a.setAttribute("rel", "nofollow");
            a.setAttribute("aria-label", "Show commit diff.\r\nHold Shift to open commit patch.");
            a.appendChild(s);
            a.appendChild(document.createTextNode(" Diff"));

            var g = document.createElement("div");
            g.classList.add("GithubCommitDiffButton", "right");
            g.style.margin = "0 10px 0 0"; // give us some room;
            g.appendChild(a);

            b.parentNode.insertBefore(g, b);

            a.addEventListener("mousedown", mousedownEvent, false);
            a.addEventListener("mouseout", function() {
                a.setAttribute("href", getPatchOrDiffHref("diff"));
            }, false);
        } else if (/\/pull\/\d*\/files/.test(location.href) && (e = document.querySelector("#files_bucket .pr-toolbar .diffbar > .right"))) {

            var r = e.querySelector(".GithubCommitDiffButton");
            if (r) {
                r.parentElement.removeChild(r);
            }

            const s = document.createElementNS("http://www.w3.org/2000/svg", "svg");
            s.classList.add("octicon", "octicon-diff");
            s.setAttributeNS(null, "height", 16);
            s.setAttributeNS(null, "width", 14);
            s.setAttributeNS(null, "viewBox", "0 0 14 16");

            const p = document.createElementNS("http://www.w3.org/2000/svg", "path");
            p.setAttributeNS(null, "d", "M6 7h2v1H6v2h-1V8H3v-1h2V5h1v2zM3 13h5v-1H3v1z m4.5-11l3.5 3.5v9.5c0 0.55-0.45 1-1 1H1c-0.55 0-1-0.45-1-1V3c0-0.55 0.45-1 1-1h6.5z m2.5 4L7 3H1v12h9V6zM8.5 0S3 0 3 0v1h5l4 4v8h1V4.5L8.5 0z");
            s.appendChild(p);

            var a = document.createElement("a");
            a.classList.add("btn-link", "muted-link");
            a.setAttribute("href", getPatchOrDiffHref("diff"));
            a.setAttribute("rel", "nofollow");
            a.setAttribute("aria-label", "Show commit diff.\r\nHold Shift to open commit patch.");
            a.appendChild(s);
            a.appendChild(document.createTextNode(" Diff"));

            var g = document.createElement("div");
            g.classList.add("GithubCommitDiffButton", "diffbar-item");
            g.appendChild(a);

            e.insertBefore(g, e.firstChild);

            a.addEventListener("mousedown", mousedownEvent, false);
            a.addEventListener("mouseout", function() {
                a.setAttribute("href", getPatchOrDiffHref("diff"));
            }, false);
        }
    }

    function mousedownEvent(e) {
        if (e.shiftKey) {
            var patch = getPatchOrDiffHref("patch");
            e.preventDefault();
            a.setAttribute("href", patch);
            if (e.which === 1) { // left click;
                location.href = patch;
                // To prevent Firefox default behavior (opening a new window)
                //  when pressing shift-click on a link, delete the link.
                this.parentElement.removeChild(this);
            } else if (e.which === 2) { // middle click;
                window.open(patch, "GithubCommitDiff");
            }
        } else {
            a.setAttribute("href", getPatchOrDiffHref("diff"));
        }
    }

    function getPatchOrDiffHref(type) {
        return (document.querySelector("link[type='text/plain+" + type + "']") || document.querySelector("link[type='text/x-" + type + "']") || {
            href: location.href + "." + type
        }).href;
    }

    // init;
    addButton();

    // on pjax;
    document.addEventListener('pjax:end', addButton);

})();