// ==UserScript==
// @name 复制为Markdown格式
// @namespace https://github.com/nameldk/user-script
// @version 0.3.2
// @description 复制网页内容为Markdown格式。点击右上角copy按钮开始选择内容，点击鼠标或按Enter进行复制。按Esc取消选择，上箭头选择父级，下箭头选择子级，左箭头选择前面的相邻元素，右箭头选择后面的相邻元素。按钮可以拖动。Ctrl+c+c激活。
// @author nameldk
// @require https://unpkg.com/turndown/dist/turndown.js
// @match https://*/*
// @match http://*/*
// @match file:///*
// @grant none
// ==/UserScript==
(function () {
'use strict';
const CLASS_HINT = "_myhint_";
let $curElement = null;
let $btn = document.createElement("div");
let turndownService = new TurndownService();
let urlProtocol = document.location.protocol;
let urlOrigin = document.location.origin;
let urlPath = (document.location.pathname.substring(0, document.location.pathname.lastIndexOf('/'))) + '/';
let isHold = 0,
isDrag = 0;
function addStyle(css) {
let s = document.createElement("style");
s.type = "text/css";
s.textContent = css;
document.body.prepend(s);
}
function showHint($this) {
if ($this) {
$this.classList.add(CLASS_HINT);
}
}
function hideHint($this) {
if ($this) {
$this.classList.remove(CLASS_HINT);
}
}
function handleMouseover(e) {
hideHint($curElement);
let $target = e.target;
$curElement = $target;
showHint($target);
}
function handleMouseout(e) {
let $target = e.target;
hideHint($target);
}
function handleKeyup(e) {
function isValidNode(node) {
return node && node.textContent && node.textContent.trim() !== "";
}
function findNextNode(node) {
if (node) {
var findNode = node.nextElementSibling;
while(findNode) {
if (isValidNode(findNode)) {
return findNode;
} else {
if (findNode.nextElementSibling) {
findNode = findNode.nextElementSibling;
}
}
}
}
return null;
}
if (e.keyCode === 13) { // enter
process(e);
return false;
} else if (e.keyCode === 27) { // esc
disable();
} else if (e.keyCode === 38) { // arrow up
if ($curElement && isValidNode($curElement.parentElement)) {
hideHint($curElement);
$curElement = $curElement.parentElement;
showHint($curElement);
}
} else if (e.keyCode === 37) { // arrow left
if ($curElement && isValidNode($curElement.previousElementSibling)) {
hideHint($curElement);
$curElement = $curElement.previousElementSibling;
showHint($curElement);
}
} else if (e.keyCode === 40) { // arrow down
let nextNode = null;
if ($curElement && (nextNode = findNextNode($curElement.firstElementChild))) {
hideHint($curElement);
$curElement = nextNode;
showHint($curElement);
}
} else if (e.keyCode === 39) { // arrow right
if ($curElement && isValidNode($curElement.nextElementSibling)) {
hideHint($curElement);
$curElement = $curElement.nextElementSibling;
showHint($curElement);
}
}
}
function disableScroll(e) {
if ([38, 40, 37, 39].indexOf(e.keyCode) > -1) {
e.preventDefault();
}
}
function handleClick(e) {
process(e);
return false;
}
function process(e) {
if ($curElement) {
e.preventDefault();
copyIt($curElement);
disable();
showTips();
}
}
function showTips() {
let t = document.createElement("div");
t.style.position = "fixed";
t.style.width = "80px";
t.style.height = "24px";
t.style.lineHeight = "24px";
t.style.top = "10px";
t.style.right = "50%";
t.style.background = "#68af02";
t.style.fontSize = "14px";
t.style.color = "#fff";
t.style.textAlign = "center";
t.style.borderRadius = "5px";
t.style.marginLeft = "300px";
t.style.zIndex = 10000;
t.innerHTML = "复制成功";
document.body.prepend(t);
setTimeout(function () {
document.body.removeChild(t);
}, 1000);
}
function copyIt($curElement) {
if ($curElement) {
let html = $curElement.innerHTML;
html = html
.replace(/<figure[\s\S]+?<\/figure>/gi, processFigure)
.replace(/<img[^>]+>/gi, processImg)
.replace(/(<a.+?href=")(.*?")(.*?<\/a>)/gi, parseHref)
;
let markdown = turndownService.turndown(html);
markdown = markdown.replace(/<img.+?>/g, "");
copyToClipboard(markdown);
}
}
function processFigure(str) {
str = str.replace(/<noscript>[\s\S]*<\/noscript>/, '');
let img = str.match(/<img[^>]+?>/);
if (img) {
return img[0];
}
return str;
}
function processImg(imgStr) {
let src = (imgStr.match(/\ssrc=(["'])(.*?)\1/) || [])[2];
if (!src)
return '';
let original = (imgStr.match(/\sdata-original=(["'])(.*?)\1/) || [])[2];
if (original) {
src = original;
}
if (src.toLowerCase().indexOf('http') === 0) {
return '<img src="'+src+'" />';
} else if (src.indexOf('//') === 0) {
src = urlProtocol + src;
} else if (src.indexOf('/') === 0) {
src = urlOrigin + src;
} else {
src = urlPath + src;
}
return '<img src="'+src+'" />';
}
function parseHref(match, head, link, tail){
if (link.substr(0, 4) === 'http') {
return head + link.replace(/#.*/,"") + tail;
}
var path = document.location.pathname.split('/');
path.pop();
if (link[0] === '#' || link.substr(0, 10) === 'javascript' || link === '"') { // "#" "javascript:" ""
return head + '#"' + tail;
} else if (link[0] === '.' && link[1] === '/'){ // "./xxx"
return head + document.location.origin + path.join('/') + link.substring(1) + tail;
} else if (link[0] === '.' && link[1] === '.' && link[2] === '/') { // ../xxx
var p2Arr = link.split('../'),
tmpRes = [p2Arr.pop()];
path.pop();
while(p2Arr.length){
var t = p2Arr.pop();
if (t === ''){
tmpRes.unshift(path.pop());
}
}
return head + document.location.origin + tmpRes.join('/') + tail;
} else if (link.match(/^\/\/.*/)) { // //xxx.com
return head + document.location.protocol + link + tail;
} else if (link.match(/^\/.*/)) { // /abc
return head + document.location.origin + link + tail;
} else { // "abc/xxx"
return head + document.location.origin + path.join("/") + '/' + link + tail;
}
}
function copyToClipboard(text) {
const input = document.createElement('textarea');
input.style.position = 'fixed';
input.style.opacity = 0;
input.value = text;
document.body.appendChild(input);
input.select();
let res = document.execCommand('Copy');
document.body.removeChild(input);
return res;
}
function enable() {
document.addEventListener("mouseover", handleMouseover);
document.addEventListener("mouseout", handleMouseout);
document.addEventListener("click", handleClick);
document.addEventListener("keyup", handleKeyup);
window.addEventListener("keydown", disableScroll, false);
}
function disable() {
if ($curElement) {
hideHint($curElement);
$curElement = null;
}
document.removeEventListener("mouseover", handleMouseover);
document.removeEventListener("mouseout", handleMouseout);
document.removeEventListener("click", handleClick);
document.removeEventListener("keyup", handleKeyup);
window.removeEventListener("keydown", disableScroll, false);
$btn.style.display = "block";
}
function genDoublePressHandler(keyCode, callback, params) {
var intval = 500;
var lastKeypressTime = 0;
var useCtrl = params && params.useCtrl;
var pressCtrl = 0;
if (useCtrl) {
document.addEventListener('keydown', function(e) {
if (useCtrl && e.keyCode === 17) {
pressCtrl = 1;
}
}, false);
document.addEventListener('keyup', function(e) {
if (useCtrl && e.keyCode === 17) {
pressCtrl = 0;
}
}, false);
}
return function(e) {
var now = +new Date;
if (e.keyCode === keyCode) {
if ((now - lastKeypressTime <= intval) && (!useCtrl || useCtrl && pressCtrl)) {
callback && callback(e);
lastKeypressTime = 0;
}
}
lastKeypressTime = now;
};
}
function initBtn() {
let topDiff = 0,
leftDiff = 0;
$btn.style.position = "fixed";
$btn.style.width = "44px";
$btn.style.height = "22px";
$btn.style.lineHeight = "22px";
$btn.style.top = "14%";
$btn.style.right = "1%";
$btn.style.background = "#0084ff";
$btn.style.fontSize = "14px";
$btn.style.color = "#fff";
$btn.style.textAlign = "center";
$btn.style.borderRadius = "6px";
$btn.style.zIndex = 10000;
$btn.style.cursor = "pointer";
$btn.style.opacity = 0.1;
$btn.innerHTML = "copy";
$btn.addEventListener("click", function () {
if (isDrag) {
return false;
}
enable();
this.style.display = "none";
});
$btn.addEventListener("mouseover", function (e) {
this.style.opacity = 1;
});
$btn.addEventListener("mouseout", function () {
this.style.opacity = 0.1;
});
$btn.addEventListener("mousedown", function (e) {
isHold = 1;
leftDiff = e.pageX - this.offsetLeft;
topDiff = e.pageY - this.offsetTop;
$btn.onmousemove = function (e) {
if (isHold) {
isDrag = 1;
}
if (isDrag) {
this.style.top = (e.pageY - topDiff) + "px";
this.style.left = (e.pageX - leftDiff) + "px";
this.style.right = "auto";
}
};
});
document.addEventListener("mouseup", function () {
setTimeout(function () {
isHold = 0;
isDrag = 0;
$btn.onmousemove = null;
}, 0);
});
// Ctrl+c+c
document.addEventListener('keyup', genDoublePressHandler(67, function (e) {
$btn.click();
},{"useCtrl":1}), false);
}
function init() {
if (!document.body) {
console.warn("no body");
return;
}
addStyle("." + CLASS_HINT + "{background-color: #fafafa; outline: 2px dashed #1976d2; opacity: .8; cursor: pointer; -webkit-transition: opacity .5s ease; transition: opacity .5s ease;}");
document.body.prepend($btn);
initBtn();
}
init();
})();
