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- // ==UserScript==
- // @name Youtube Subtitle Downloader v8
- // @include http://*youtube.com/watch*
- // @include https://*youtube.com/watch*
- // @author Cheng Zheng
- // @copyright 2009 Tim Smart; 2011 gw111zz; 2013~2016 Cheng Zheng;
- // @license GNU GPL v3.0 or later. http://www.gnu.org/copyleft/gpl.html
- // @require http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
- // @version 8
- // @grant GM_xmlhttpRequest
- // @namespace https://greasyfork.org/users/5711
- // @description download youtube COMPLETE subtitle
- // ==/UserScript==
- /*
- Third Author : Cheng Zheng
- Email : guokrfans@gmail.com
- Last update : 2016/Sep/12
- Github : https://github.com/1c7/Youtube-Auto-Subtitle-Download
- Code comments are written in Chinese. If you need help, just let me know.
- */
- // Page first time load
- (function () { init(); })();
- // Page jump
- window.addEventListener("spfdone", function(e) { init(); });
- function init(){
- unsafeWindow.VIDEO_ID = unsafeWindow.ytplayer.config.args.video_id;
- unsafeWindow.caption_array = [];
- inject_our_script();
- }
- function inject_our_script(){
- var div = document.createElement('div'),
- select = document.createElement('select'),
- option = document.createElement('option'),
- controls = document.getElementById('watch7-headline'); // 装视频标题的div
- div.setAttribute( 'style', 'margin-bottom: 10px; display: inline-block; border: 1px solid rgb(0, 183, 90); cursor: pointer; color: rgb(255, 255, 255); border-top-left-radius: 3px; border-top-right-radius: 3px; border-bottom-right-radius: 3px; border-bottom-left-radius: 3px; background-color: #00B75A;margin-left: 4px; ');
- select.id = 'captions_selector';
- select.disabled = true;
- select.setAttribute( 'style', 'border: 1px solid rgb(0, 183, 90); cursor: pointer; color: rgb(255, 255, 255); background-color: #00B75A;');
- option.textContent = 'Loading...';
- option.selected = true;
- select.appendChild(option);
- // 添加这个选项, 这个选项默认被选中, 文字是"Loading..."
- select.addEventListener('change', function() {
- download_subtitle(this);
- }, false);
- // 事件侦听.
- div.appendChild(select);
- // 往新建的div里面放入select
- controls.appendChild(div);
- // 往页面上添加这个div
- load_language_list(select);
- // 用来载入有多少字幕的函数, 不是下载字幕的函数
- var a = document.createElement('a');
- a.style.cssText = 'display:none;';
- a.setAttribute("id", "ForSubtitleDownload");
- var body = document.getElementsByTagName('body')[0];
- body.appendChild(a);// 这个元素用于下载.
- }
- // 下字幕用的函数.
- function download_subtitle (selector) {
- var caption = caption_array[selector.selectedIndex - 1];
- if (!caption) return;
- language_name_1c7 = caption.lang_name;
- var url = 'https://video.google.com/timedtext?hl=' + caption.lang_code + '&lang=' + caption.lang_code + '&name=' + caption.name + '&v=' + VIDEO_ID;
- jQuery.get(url).done(function(r){
- var text = r.getElementsByTagName('text');
- // 拿到所有的text节点
- var result = "";
- // 保存结果的字符串
- for(var i=0; i<text.length; i++){
- var index = i+1;
- // 这个是字幕的索引, 从1开始的, 但是因为我们的循环是从0开始的, 所以加个1
- var content = text[i].textContent.replace(/\n/g, " ");
- // content 保存的是字幕内容 - 这里把换行换成了空格, 因为 Youtube 显示的多行字幕中间会有个\n, 如果不加这个replace. 两行的内容就会黏在一起.
- var start = text[i].getAttribute('start');
- var end = $(text[i+1]).attr('start');
- if(!end){
- end = start + 5;
- }
- // ==== 开始处理数据, 把数据保存到result里. ====
- result = result + index + escape('\r\n');
- // 把序号加进去
- var start_time = process_time( parseFloat(start) );
- result = result + start_time;
- // 拿到 开始时间 之后往result字符串里存一下
- result = result + ' --> ';
- // 标准srt时间轴: 00:00:01,850 --> 00:00:02,720
- // 我们现在加个中间的箭头..
- var end_time = process_time( parseFloat(end) );
- result = result + end_time + escape('\r\n');
- // 拿到 结束时间 之后往result字符串里存一下
- result = result + content + escape('\r\n\r\n');
- // 加字幕内容
- }
- result = result.replace(/'/g, "'");
- // 字幕里会有html实体字符..所以我们替换掉
- var title = '(' + language_name_1c7 + ')' + unsafeWindow.ytplayer.config.args.title + '.srt';
- downloadFile(title, result);
- // 下载
- }).fail(function() {
- alert("Error: No response from server.");
- });
- selector.options[0].selected = true;
- // 下载完把选项框选回第一个元素. 也就是 Download captions.
- }
- // 载入字幕有多少种语言的函数, 然后加到那个选项框里
- function load_language_list (select) {
- GM_xmlhttpRequest({
- method: 'GET',
- url: 'https://video.google.com/timedtext?hl=en&v=' + VIDEO_ID + '&type=list',
- onload: function( xhr ) {
- var caption, option, caption_info,
- captions = new DOMParser().parseFromString(xhr.responseText, "text/xml").getElementsByTagName('track');
- if (captions.length === 0) {
- return select.options[0].textContent = 'No captions.';
- }
- for (var i = 0, il = captions.length; i < il; i++) {
- caption = captions[i];
- option = document.createElement('option');
- caption_info = {
- name: caption.getAttribute('name'),
- lang_code: caption.getAttribute('lang_code'),
- lang_name: caption.getAttribute('lang_translated')
- };
- caption_array.push(caption_info);
- option.textContent = caption_info.lang_name;
- select.appendChild(option);
- }
- select.options[0].textContent = 'Download captions.';
- select.disabled = false;
- }
- });
- }
- // 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;
- }
- function downloadFile(fileName, content){
- var TITLE = unsafeWindow.ytplayer.config.args.title; // 拿视频标题
- var version = getChromeVersion(); // 拿 Chrome 版本
- // dummy element for download
- if ($('#youtube-subtitle-downloader-dummy-element-for-download').length > 0) {
- }else{
- $("body").append('<a id="youtube-subtitle-downloader-dummy-element-for-download"></a>');
- }
- var dummy = $('#youtube-subtitle-downloader-dummy-element-for-download');
- // 判断 Chrome 版本来做事,Chrome 52 和 53 的文件下载方式不一样, 总不能为了兼顾 53 的让 52 的用户用不了
- if (version > 52){
- dummy.attr('download', fileName);
- dummy.attr('href','data:Content-type: text/plain,' + content);
- dummy[0].click();
- } else {
- downloadViaBlob(fileName, content);
- }
- }
- // 复制自: http://www.alloyteam.com/2014/01/use-js-file-download/
- // Chrome 53 之后这个函数失效。52有效。
- function downloadViaBlob(fileName, content){
- var aLink = document.createElement('a');
- var blob = new Blob([content]);
- var evt = document.createEvent("HTMLEvents");
- evt.initEvent("click", false, false);
- aLink.download = fileName;
- aLink.href = URL.createObjectURL(blob);
- aLink.dispatchEvent(evt);
- }
- //http://stackoverflow.com/questions/4900436/how-to-detect-the-installed-chrome-version
- function getChromeVersion() {
- var raw = navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./);
- return raw ? parseInt(raw[2], 10) : false;
- }
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