// ==UserScript==
// @name         Youtube Full Text (Subtitle Downloader + Viewer)
// @namespace    https://greasyfork.org/zh-CN/scripts/421483-youtube-full-text
// @version      1
// @description  在线字幕阅读/下载神器！ - View full text of the subtitles/captions just online! And even download them as srt files !
// @author       KnIfER
// @include      https://*youtube.com/*
// ==/UserScript==
(function() {
'use strict';
var loadOnStart = false; /* true false 是否自动分析字幕 */
var pinFTMenu = false; /* true false 是否不自动关闭字幕列表 */
var autoFTM = false; /* true false 是否自动打开字幕列表 */
var cssData = "#TextView{position:fixed;bottom:0;left:0;width:100%;height:30px;box-sizing:border-box;background:#fff;z-index: 1000;overflow-y:scroll}#drag_resizer{position:sticky;top:0;right:0;height:6px;width:100%;padding:0;cursor:ns-resize}#ftv{margin-top:9px;margin-left:5px;font-size:x-large;padding:0 100px 0 100px;}a.ft-time:before{content:attr(data-val)}a.ft-time{text-decoration:none;color:blue;user-select:none;-moz-user-select:none}.ft-ln.curr {border-bottom: 2px solid #0000ffac;}ytd-masthead{background: transparent;}";
var btnCss = ".ytp-gradient-top,.ytp-chrome-top{opacity:0}.ytp-fulltext-menu{right: 12px;bottom: 53px;z-index: 71;will-change: width,height;}.ytp-fulltext-menu .ytp-menuitem-label{width: 65%;}";
// the dialog
var pageData = '<p id="drag_resizer"></p><p id="ftv">CAPTION</p>';
var menuData = `<div class="ytp-popup ytp-fulltext-menu" data-layer="6" id="yft-select"
style="width: 251px; height: 137px; display: block;">
<div class="ytp-panel" style="min-width: 250px; width: 251px; height: 137px;" id="yft_cc">
<div class="ytp-panel-menu" role="menu" style="height: 137px;"></div>
</div>
</div>`;
// the svg icon from Android Assets && the VectorPathTweaker plugin
var btnData = '<svg height="100%" version="1.1" viewBox="0 0 36 36" width="100%"><g class="ytp-fullscreen-button-corner-0"><use class="ytp-svg-shadow" xlink:href="#ytp-id-99"></use><path class="ytp-svg-fill" d="M18.97,18h6.82v1.46h-6.82zM18.97,15.57h6.82L25.8,17.03h-6.82zM18.97,20.43h6.82L25.8,21.89h-6.82zM26.77,10.19L9.23,10.19c-1.07,0 -1.96,0.88 -1.96,1.96v12.67c0,1.07 0.88,1.96 1.96,1.96h17.55c1.07,0 1.96,-0.88 1.96,-1.96L28.73,12.15c0,-1.07 -0.88,-1.96 -1.96,-1.96zM26.77,24.83h-8.77L18,12.15h8.77v12.67z" id="ytp-id-99"></path></g></svg>';
// api address
var baseUrl = 'https://video.google.com/timedtext';
// the panel, the text, the button
var YFT, ftv, BTN;
// the menu
var YFT_menu, YFT_mps;
// video tag
var H5Vid;
var lrcLoaded;
function initBTN(){
if(!BTN){
var doc=document,rct = doc.getElementsByClassName("ytp-right-controls")[0];
if(rct&&rct.firstChild){
// insert a control btn
var e = doc.createElement("style");
e.id = "FTCB"
doc.head.appendChild(e);
e.innerHTML = btnCss;
e = doc.createElement("button");
e.id = "YFTB"
e.className = "ytp-fulltext-button ytp-button";
e.title="Full text (t)";
rct.insertBefore(e,rct.firstChild);
e.innerHTML = btnData;
e.onclick = function() {
if(YFT_mps) {
var st = YFT_mps;
if(st.display!="none") {
st.display="none"
} else {
st.display="";
build_cc_menu()
}
} else {
build_cc_menu()
}
}
BTN=e;
if(autoFTM) {
build_cc_menu()
}
if(loadOnStart) {
// todo load initial lyrics
build_cc_menu(1);
initYFT();
}
} else {
setTimeout(initBTN, 100);
}
}
}
function initYFT(H){
if(!YFT) {
var doc=document,item = doc.createElement("style");
item.id = "YFT"
doc.head.appendChild(item);
item.innerHTML = cssData;
item=doc.createElement("div");
item.id="TextView";
doc.body.appendChild(item);
item.innerHTML=pageData;
YFT = item;
ftv = YFT.children[1];
// drag-resize the TextView
//item.onload= ()=> bindResize();
bindResize();
function bindResize(){
var tvP = YFT;
var tvPs = tvP.style,
x = 0;
var el = drag_resizer;
function mousedown(e){
if(e.clientY==undefined)
e.clientY=e.originalEvent.changedTouches[0].clientY;
x = e.clientY + tvP.offsetHeight;
e.preventDefault()
document.addEventListener("mousemove", mouseMove); document.addEventListener("mouseup", mouseUp);
};
function mouseMove(e){
if(e.clientY==undefined)
e.clientY=e.originalEvent.changedTouches[0].clientY;
tvPs.height = x - e.clientY + 'px';
}
function mouseUp(){
document.removeEventListener("mousemove", mouseMove); document.removeEventListener("mouseup", mouseUp);
}
el.addEventListener("mousedown", mousedown);
el.addEventListener("touchstart", mousedown);
el.addEventListener("touchmove", mouseMove);
el.addEventListener("touchend", mouseUp);
}
installTimers();
//var insertionLis = e => {
//	//console.log("DOMNodeInserted")
//	if(document.body.lastElementChild!=YFT){
//		document.body.removeChild(YFT);
//		document.body.appendChild(YFT);
//	}
//};
//document.body.addEventListener('DOMNodeInserted', insertionLis)
}
ensureFTH(H||30)
}
function ensureFTH(e){
// ensure visibility
if(YFT){
var h = parseFloat(YFT.style.height);
if(h!=h||h<e) {
YFT.style.height = e+"px"
}
if(YFT.style.display!=="") {
YFT.style.display = ""
}
}
}
/*via mdict-js*/
function reduce(val,arr,st,ed) {
var len = ed-st;
if (len > 1) {
len = len >> 1;
return val > arr[st + len - 1].endTime
? reduce(val,arr,st+len,ed)
: reduce(val,arr,st,st+len);
} else {
return arr[st];
}
}
function installTimers(){
if(H5Vid==null) {
H5Vid=document.querySelector('video')
if(H5Vid==null) {
setTimeout(initTimer, 100)
} else {
H5Vid.addEventListener('timeupdate', e => {
// lyrics scroll sync to time
var tm=H5Vid.currentTime;
if(lrcArr&&(!lcN||tm>=lcN.endTime||tm<lcN.startTime)) {
var n = reduce(tm,lrcArr,0,lrcArr.length);
if(n&&n!=lcN) {
lcN = n;
if(lcE) {
lcE.className="ft-ln";
}
n = n.ele;
lcE = n;
if(n) {
n.className+=" curr";
}
if(window.getSelection().isCollapsed
&&(n.offsetTop+n.offsetHeight>TextView.scrollTop+TextView.offsetHeight
||n.offsetTop<TextView.scrollTop)) {
TextView.scrollTop=n.offsetTop;
//TextView.scrollTo(n.offsetTop);
}
}
}
})
window.addEventListener("click", function(e){
if(e.srcElement.className==="ft-time") {
e.preventDefault();
H5Vid.currentTime=parseFloat(e.srcElement.getAttribute("data-tm"));
}
});
}
}
}
// http://qtdebug.com/fe-srt/
function parseSrtSubtitles(srt) {
var subtitles = [];
var textSubtitles = srt.split('\n\n'); // 每条字幕的信息，包含了序号，时间，字幕内容
for (var i = 0; i < textSubtitles.length; ++i) {
var textSubtitle = textSubtitles[i].split('\n');
if (textSubtitle.length >= 2) {
var sn = textSubtitle[0];
var tms = textSubtitle[1].split(' --> ');
var startTime = toSeconds(tms[0]);
var endTime   = toSeconds(tms[1]);
var content   = textSubtitle[2];
// 字幕可能有多行
if (textSubtitle.length > 2) {
for (var j = 3; j < textSubtitle.length; j++) {
content += ' ' + textSubtitle[j];
}
}
// 你没有对象
var subtitle = {
sn: sn,
startTime: startTime,
endTime: endTime,
content: content
};
subtitles.push(subtitle);
}
}
return subtitles;
}
function toSeconds(t) {
var s = 0.0;
if (t) {
var p = t.trim().split(':');
for (var i = 0; i < p.length; i++) {
s = s * 60 + parseFloat(p[i].replace(',', '.'));
}
}
return s;
}
var lrcArr;
var lcN, lcE;
// Append full text.
function APFT(e, d) {
//console.log("APFT", e, d);
var lrc = e.srt;
if(d) {
var t=document.getElementsByTagName("H1")[0];
if(t)t=t.innerText;
else t=document.title;
downloadString(lrc, "text/plain", t+"."+(e.lang_code||"a")+".srt");
return;
}
unsafeWindow.srtlrc=e;
// parse
var lrcs = parseSrtSubtitles(lrc);
var span="";
var lastTime=0;
// concatenate
for(var i=0;i<lrcs.length;i++){
var lI=lrcs[i];
var text = lI.content;
var lnSep="<br><br>";
var sepLn="";
if(lI.startTime-lastTime>3){
var idx = text.indexOf(".");
// skip numberic dots
while(idx>0) {
if(idx+1>=text.length||text[idx+1]<=' ') {
break;
}
idx = text.indexOf(".", idx+1);
}
if(idx<0) idx = text.indexOf("。");
if(idx<0) idx = text.indexOf(",");
if(idx<0) idx = text.indexOf("，");
if(idx>=0) {
text=" "+text.substring(0, idx+1)
+lnSep+text.substring(idx+1);
} else {
sepLn = lnSep;
}
lnSep = " ";
} else {
// merge to previous line
text="&nbsp;"+text;
lnSep = "";
}
//console.log(lI.startTime-lastTime);
var s = lI.startTime;
var m = parseInt(lI.startTime/60);
span+=sepLn+"<a class='ft-time' href='' data-val='" + " "
+(m+":"+parseInt(s-m*60))+lnSep+"' data-tm='"+s+"'></a>"
+"<span class='ft-ln'>"+text+"</span>"
lastTime = lI.startTime;
}
ftv.innerHTML=span;
// attach ele to array
lrcArr = lrcs;
lcN = 0;
var cc=0;
var sz = ftv.childElementCount;
for(var i=0;i<sz,cc<lrcArr.length;i++) {
if(ftv.children[i].className==="ft-ln") {
lrcArr[cc++].ele=ftv.children[i];
}
}
window.lrcArr=lrcArr;
//console.log(lrcArr);
}
//window.APFT = APFT;
initBTN();
unsafeWindow.yft_captions = []; // store all subtitle
// trigger when loading new page
// (actually this would also trigger when first loading, that's not what we want, that's why we need to use firsr_load === false)
// (new Material design version would trigger this "yt-navigate-finish" event. old version would not.)
var body = document.getElementsByTagName("body")[0];
body.addEventListener("yt-navigate-finish", function (event) {
if (is_video_page()&&autoFTM) {
if(build_cc_menu()) {
var st = YFT_mps;
if(st.display!="") {
st.display=""
}
}
}
});
// trigger when loading new page
// (old version would trigger "spfdone" event. new Material design version not sure yet.)
window.addEventListener("spfdone", function (e) {
//if (is_video_page()) {
//	remove_dwnld_btn();
//	var checkExist = setInterval(function () {
//		if (unsafeWindow.watch7_headline) {
//			init();
//			clearInterval(checkExist);
//		}
//	}, 330);
//}
});
function is_video_page() {
return get_vid() !== null;
}
function get_vid() {
return getURLParameter('v');
}
//https://stackoverflow.com/questions/11582512/how-to-get-url-parameters-with-javascript/11582513#11582513
function getURLParameter(name) {
return decodeURIComponent((new RegExp('[?|&]' + name + '=' + '([^&;]+?)(&|#|;|$)').exec(location.search) || [null, ''])[1].replace(/\+/g, '%20')) || null;
}
// https://stackoverflow.com/questions/32142656/get-youtube-captions#58435817
function buildXmlurl(videoId, loc) {
return `${baseUrl}?lang=${loc}&v=${videoId}`;//&fmt=json3
}
// pull the selected caption.
function pullLyrics(e, d) {
var url;
if(e==0) {
console.log("auto");
url = get_auto_xml_url();
console.log("auto", url);
}
e = yft_captions[e]
if(e) {
if(!e.srt)
fetch(url||buildXmlurl(get_vid(), e.lang_code))
.then(v => v.text())
.then(v => (new window.DOMParser()).parseFromString(v, "text/xml"))
.then(v => {
v = buildSrtFromXML(v);
e.srt = v;
APFT(e, d)
})
else APFT(e, d)
}
}
function buildMenu(e){
return `<div class="ytp-menuitem" aria-haspopup="true" role="menuitem" tabindex="${e.cid||0}">
<div class="ytp-menuitem-icon"></div>
<div class="ytp-menuitem-label">
${e.lang_name}
</div>
<div class="ytp-menuitem-content">
下载
</div>
</div>`;
}
function menuic(e){
var t = e.target;
var i = parseInt(t.parentNode.getAttribute("tabindex"));
if(i==i) {
if(t.className==="ytp-menuitem-content") {
// 下载
pullLyrics(i, 1);
} else {
// 查看
initYFT(120);
pullLyrics(i);
}
}
t.blur();
if(!pinFTMenu) {
YFT_mps.display="none";
}
}
var lastVid;
function build_cc_menu(src) {
var vid = get_vid();
if(vid==lastVid) {
return false;
}
lastVid=vid;
if(loadOnStart) {
src=1;
}
// todo validify auto caption exists
if(!YFT_menu&&unsafeWindow.movie_player) {
var item = document.createElement("div");
movie_player.appendChild(item);
item.innerHTML = menuData;
YFT_mps = item.style;
YFT_menu = unsafeWindow.yft_cc;
if(src==1&&!autoFTM) {
YFT_mps.display = "none";
}
}
if(YFT_menu) {
YFT_menu.innerHTML = "";
var list_url = `${baseUrl}?hl=en&v=${vid}&type=list`;
console.log("loading_list::", list_url);
makeRequest('GET',list_url, function (xhr) {
// todo auto select if requested
try{
yft_captions = [];
var tracks = xhr.responseXML.getElementsByTagName('track');
xhr="";
var autosel=-1;
for (var i = 0, len = tracks.length, xml, ety; i <= len; i++) {
if(i==0) {
ety={lang_code:'AUTO',lang_name:'AUTO'}
} else {
xml = tracks[i-1];
ety = {
lang_code: xml.getAttribute('lang_code'),
lang_name: xml.getAttribute('lang_original')
||xml.getAttribute('lang_translated'),
cid:i
}
if(src==1&&xml.getAttribute('lang_default')) {
autosel=i;
src=0;
}
}
yft_captions.push(ety); // 加到 yft_captions, 待会靠它下载
xhr+=buildMenu(ety);
}
if(src==1) {
autosel=0;
}
console.log("autosel", autosel);
YFT_menu.innerHTML=xhr;
var cc = YFT_menu.children;
for (var i = 0, len = cc.length; i < len; i++) {
cc[i].onclick = menuic;
if(autosel==i) {
initYFT(120);
pullLyrics(i);
}
}
} catch(e) {console.log(e)}
});
} else {
lastVid="";
}
return true;
}
// 处理时间. 比如 start="671.33"  start="37.64"  start="12" start="23.029"
// 处理成 srt 时间, 比如 00:00:00,090    00:00:08,460    00:10:29,350
function process_time(s) {
s = s.toFixed(3);
// 超棒的函数, 不论是整数还是小数都给弄成3位小数形式
// 举个柚子:
// 671.33 -> 671.330
// 671 -> 671.000
// 注意函数会四舍五入. 具体读文档
var array = s.split('.');
// 把开始时间根据句号分割
// 671.330 会分割成数组: [671, 330]
var Hour = 0;
var Minute = 0;
var Second = array[0]; // 671
var MilliSecond = array[1]; // 330
// 先声明下变量, 待会把这几个拼好就行了
// 我们来处理秒数.  把"分钟"和"小时"除出来
if (Second >= 60) {
Minute = Math.floor(Second / 60);
Second = Second - Minute * 60;
// 把 秒 拆成 分钟和秒, 比如121秒, 拆成2分钟1秒
Hour = Math.floor(Minute / 60);
Minute = Minute - Hour * 60;
// 把 分钟 拆成 小时和分钟, 比如700分钟, 拆成11小时40分钟
}
// 分钟，如果位数不够两位就变成两位，下面两个if语句的作用也是一样。
if (Minute < 10) {
Minute = '0' + Minute;
}
// 小时
if (Hour < 10) {
Hour = '0' + Hour;
}
// 秒
if (Second < 10) {
Second = '0' + Second;
}
return Hour + ':' + Minute + ':' + Second + ',' + MilliSecond;
}
// copy from: https://gist.github.com/danallison/3ec9d5314788b337b682
// Thanks! https://github.com/danallison
// work in Chrome 66
// test passed: 2018-5-19
function downloadString(text, fileType, fileName) {
var blob = new Blob([text], {type: fileType});
var a = document.createElement('a');
a.download = fileName;
a.href = URL.createObjectURL(blob);
a.dataset.downloadurl = [fileType, a.download, a.href].join(':');
a.style.display = "none";
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
setTimeout(function () {
URL.revokeObjectURL(a.href);
}, 1500);
}
// https://css-tricks.com/snippets/javascript/unescape-html-in-js/
// turn HTML entity back to text, example: &quot; should be "
function htmlDecode(input) {
var e = document.createElement('div');
e.class = 'dummy-element-for-tampermonkey-Youtube-Subtitle-Downloader-script-to-decode-html-entity';
e.innerHTML = input;
return e.childNodes.length === 0 ? "" : e.childNodes[0].nodeValue;
}
// return URL or null;
// later we can send a AJAX and get XML subtitle
function get_auto_xml_url() {
try {
var captionTracks = get_captionTracks()
for (var index in captionTracks) {
var caption = captionTracks[index];
if (caption.kind === 'asr') {
return captionTracks[index].baseUrl;
}
// ASR – A caption track generated using automatic speech recognition.
// https://developers.google.com/youtube/v3/docs/captions
}
return false;
} catch (e) {
console.log(e);
return false;
}
}
async function get_auto_subtitle() {
var url = get_auto_xml_url();
console.log("dwnld_auto_url::", url);
if (url == false) {
return false;
}
var r###lt = await getUrl(url)
return r###lt
}
// Youtube return XML. we want SRT
// input: Youtube XML format
// output: SRT format
function buildSrtFromXML(youtube_xml_string) {
if (youtube_xml_string === '') {
return false;
}
var text = youtube_xml_string.getElementsByTagName('text');
var r###lt = '';
var BOM = '\uFEFF';
r###lt = BOM + r###lt; // store final SRT r###lt
var len = text.length;
for (var i = 0; i < len; i++) {
var index = i + 1;
var content = text[i].textContent.toString();
content = content.replace(/(<([^>]+)>)/ig, ""); // remove all html tag.
var start = text[i].getAttribute('start');
var end = parseFloat(text[i].getAttribute('start')) + parseFloat(text[i].getAttribute('dur'));
var new_line = "\n";
r###lt = r###lt + index + new_line;
// 1
if (i + 1 >= len) {
end = parseFloat(text[i].getAttribute('start')) + parseFloat(text[i].getAttribute('dur'));
} else {
end = text[i + 1].getAttribute('start');
}
var start_time = process_time(parseFloat(start));
var end_time = process_time(parseFloat(end));
r###lt = r###lt + start_time;
r###lt = r###lt + ' --> ';
r###lt = r###lt + end_time + new_line;
// 00:00:01,939 --> 00:00:04,350
content = htmlDecode(content);
// turn HTML entity back to text. example: &#39; back to apostrophe (')
r###lt = r###lt + content + new_line + new_line;
// everybody Craig Adams here I'm a
}
return r###lt;
}
function get_captionTracks() {
var json = null
if (unsafeWindow.youtube_playerResponse_1c7) {
json = youtube_playerResponse_1c7;
} else if(ytplayer.config.args.player_response) {
let raw_string = ytplayer.config.args.player_response;
json = JSON.parse(raw_string);
} else if (ytplayer.config.args.raw_player_response) {
json = ytplayer.config.args.raw_player_response;
}
let captionTracks = json.captions.playerCaptionsTracklistRenderer.captionTracks;
return captionTracks
}
// https://stackoverflow.com/questions/48969495/in-javascript-how-do-i-should-i-use-async-await-with-xmlhttprequest
function makeRequest(method, url, load) {
return new Promise(function (resolve, reject) {
let xhr = new XMLHttpRequest();
xhr.open(method, url);
xhr.timeout = 2000;
xhr.onload = function () {
if (this.status >= 200 && this.status < 300) {
if(load) {
load(xhr);
resolve('');
} else {
resolve(xhr.responseXML);
}
} else {
reject({
status: this.status,
statusText: xhr.statusText
});
}
};
xhr.onerror = function () {
reject({
status: this.status,
statusText: xhr.statusText
});
};
xhr.send();
});
}
async function getUrl(url) {
return makeRequest("GET", url);
}
})();