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MyDownloader

包含多种下载方法的下载库

此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.gf.qytechs.cn/scripts/515674/1544163/MyDownloader.js 

  1. // ==UserScript==
  2. // @name         MyDownloader
  3. // @version      2025.02.27
  4. // @description  包含多种下载方法的下载库
  5. // @author       You
  6. // @grant        none
  7. // @grant        GM_getValue
  8. // @grant        GM_setValue
  9. // @grant        GM_deleteValue
  10. // @grant        GM_download
  11. // @require https://update.gf.qytechs.cn/scripts/480132/1476440/Get_all_img_Library.js
  12. // @require https://update.gf.qytechs.cn/scripts/522187/1511410/Kquery.js
  13. // ==/UserScript==
  14. // 2025.01.07 更新了download text
  15. // 2025.01.07.02 更新了download text(src,name)
  16. // 2025.01.07.03 修复了download text(src,name)没有传入name的bug
  17.  
  18.  
  19. /**
  20.  * 包含多种下载方法的下载类
  21.  * @example
  22.  const downloader = new Downloader();
  23.  downloader.Download_img(imgs);
  24. */
  25. function Downloader(){
  26. 	
  27. 	let downloading = 0;
  28. 	let downloaded = [];
  29. 	let downloadError = [];
  30. 	let imgs = null;
  31. 	let maxDownloadingCounts = 10;
  32. 	let timeout = null;
  33. 	let downloadType = ""
  34. 	let checkSrc = false;
  35. 	
  36. 	
  37. 	/**
  38. 	 * @example Download_img(imgs)
  39. 	 */
  40. 	this.Download_img = async (imgs)=>{
  41. 		Set_download(imgs)
  42. 		if(downloadType==""){
  43. 			Download_obo("GM_download");return;
  44. 		}
  45.  
  46. 		console.log(downloadType);
  47. 		if(downloadType=="GM_download"){
  48. 			Download_obo("GM_download");
  49. 		}else if(downloadType=="atag"){
  50. 			Download_obo("atag");
  51. 			console.log('download atag')
  52. 		}else if(downloadType=="blob"){
  53. 			Download_obo("blob");
  54. 		}else{
  55. 			alert("no this donwload type");
  56. 		}
  57. 	}
  58.  
  59. 	this.Set_downloadType = v => downloadType = v;
  60.  
  61. 	this.Set_maxDownloadingCounts = v => maxDownloadingCounts = v;
  62.  
  63. 	this.Set_timeout = v => timeout = v;
  64. 	
  65. 	this.Set_checkSrc = v => checkSrc = v;
  66. 	/**
  67. 	 * @example OneSuccess((success_img)=>{...})
  68. 	 */
  69. 	function OneSuccess(img){}
  70. 	this.OneSuccess = foo=>OneSuccess = foo;
  71. 	/**
  72. 	 * @example OneError((error_img)=>{...})
  73. 	 */
  74. 	function OneError(img){}
  75. 	this.OneError = foo=>OneError = foo;
  76. 	/**
  77. 	 * @example AllComplete(()=>{...})
  78. 	 */
  79. 	function AllComplete(){}
  80. 	this.AllComplete = foo=>AllComplete = foo;
  81. 	
  82. 	this.Set_download = (iimgs)=>{Set_download(iimgs);}
  83. 	function Set_download(iimgs){
  84. 		downloaded = [];
  85. 		downloading = 0;
  86. 		downloadError = [];
  87. 		imgs = iimgs;
  88. 	}
  89. 	function Download_obo(dtype){
  90. 		async function Download_one(i){
  91. 			if(i>=imgs.length){AllComplete();return;}
  92. 			if(downloading>=maxDownloadingCounts){setTimeout(()=>{Download_one(i)},1000);return;}
  93. 			const img = imgs.eq(i);
  94. 			downloading++;
  95. 			function success(img){
  96. 				OneSuccess(img);
  97. 				downloading--;
  98. 				downloaded.push(img);
  99. 				ConsoleWrite((downloaded.length+downloadError.length)+"/"+imgs.length)
  100. 			}
  101. 			function error(img){
  102. 				OneError(img);
  103. 				downloading--;
  104. 				downloadError.push(img);
  105. 			}
  106. 			switch(dtype){
  107. 				case "GM_download":
  108. 					Donwload_img_by_GM(img)
  109. 						.then(img=>success(img))
  110. 						.catch(img=>{
  111. 							dtype = "blob"
  112. 							Download_one(i);
  113. 						});
  114. 					break;
  115. 				case "blob":
  116. 					Donwload_img_by_blob(img)
  117. 						.then(img=>success(img))
  118. 						.catch(img=>{
  119. 							dtype = "atagIfram";
  120. 							Download_one(i);
  121. 						});
  122. 					break;
  123. 				case "atagIfram":
  124. 					Donwload_img_by_atag(img)
  125. 						.then(img=>success(img))
  126. 						.catch(img=>{
  127. 							error(img);
  128. 							dtype = "GM_download";
  129. 						});
  130. 					break;
  131. 			}
  132. 			Download_one(++i);
  133. 		}
  134. 		Download_one(0);
  135. 	}
  136. 	function ConsoleWrite(mass){
  137. 		if(window.GAIL){
  138. 			window.GAIL.showmass(mass);
  139. 		}
  140. 	}
  141. 	this.ConsoleWrite = foo=>ConsoleWrite = foo;
  142. 	
  143. 	this.Donwload_img_by_GM = img=>{Donwload_img_by_GM(img);}
  144. 	function Donwload_img_by_GM(img){
  145. 		return new Promise(async(resolve,reject)=>{
  146. 			if(!img){alert("img is empty");reject(img);return;}
  147. 			if(!GM_download){alert("GM_download is undefind");reject(img);return;}
  148. 			let name = '';
  149. 			let src = '';
  150. 			try{
  151. 				await Check_and_get_nameAndsrc({img:img,checkSrc:checkSrc})
  152. 						.then((m)=>{
  153. 							name = m.name;
  154. 							src = m.src;
  155. 							console.log(m);
  156. 						});
  157. 			}catch(error){
  158. 				reject(img);
  159. 				return;
  160. 			}
  161. 			console.log(name)
  162. 			console.log(src)
  163. 			GM_download({
  164. 				url:src,
  165. 				name:name,
  166. 				onload:function(){
  167. 					resolve(img);
  168. 				},
  169. 				onerror:function(){
  170. 					reject(img);
  171. 				},
  172. 				onprogress:function(){
  173. 					
  174. 				}
  175. 			});
  176. 			if(timeout){
  177. 				setTimeout(()=>{
  178. 					reject(img);
  179. 				},timeout);
  180. 			}
  181. 		})
  182. 	}
  183. 	
  184. 	this.Download_img_by_blob = (img)=>{Download_img_by_blob(img);}
  185. 	function Download_img_by_blob(img){
  186. 		return new Promise(async(rs,rj)=>{
  187. 			if(!img){alert("imgs is empty");rj(img);return;}
  188. 			
  189. 			let name = '';
  190. 			let src = '';
  191. 			try{
  192. 				await Check_and_get_nameAndsrc({img:img,checkSrc:checkSrc})
  193. 						.then((m)=>{
  194. 							name = m.name;
  195. 							src = m.src;
  196. 							console.log(m);
  197. 						});
  198. 			}catch(error){
  199. 				rj(img);
  200. 				return;
  201. 			}
  202. 			UrlToBlob({url:src,timeout:timeout})
  203. 				.then(blob=>{
  204. 					let a = $('<a></a>').attr({
  205. 						download:name,
  206. 						href:blob
  207. 					})
  208. 					a[0].click();
  209. 					rs(img);
  210. 				})
  211. 				.catch(er=>{
  212. 					console.log(er);
  213. 					rj(img);
  214. 				});
  215. 			if(timeout){
  216. 				setTimeout(()=>{
  217. 					rj(img);
  218. 				},timeout)
  219. 			}
  220. 		})
  221. 	}
  222. 	
  223. 	this.Download_img_by_atag = (img,nowIsImgPage)=>{Download_img_by_atag(img,nowIsImgPage);}
  224. 	async function Download_img_by_atag(img,nowIsImgPage) {
  225. 		return new Promise(async(resolve,reject)=>{
  226. 			if(!img){alert("imgs is empty");reject(img);return;}
  227. 			if(!GM_setValue){alert("GM_setValue is underfind");reject(img);return;}
  228. 			if (!nowIsImgPage) {
  229. 				let name = '';
  230. 				let src = '';
  231. 				try{
  232. 					await Check_and_get_nameAndsrc({img:img,checkSrc:checkSrc})
  233. 							.then((m)=>{
  234. 								name = m.name;
  235. 								src = m.src;
  236. 								console.log(m);
  237. 							});
  238. 				}catch(error){
  239. 					reject(img);
  240. 					return;
  241. 				}
  242. 				GM_setValue("downloadType", "start");
  243. 				GM_setValue("downloadName", name);
  244. 				GM_setValue("downloadSrc", src);
  245. 				let mi = new My_iframe();
  246. 				let iframe;
  247. 				let isTimeout = false;
  248. 				if(timeout){
  249. 					setTimeout(()=>{isTimeout = true;},timeout)
  250. 				}
  251. 				await mi.Add_iframe(src).then(ifr=>iframe = ifr);
  252. 				
  253. 				const checkDownload = setInterval(() => {
  254. 					if (GM_getValue("downloadType") === "end") {
  255. 						$(iframe).remove();
  256. 						resolve(img);
  257. 						clearInterval(checkDownload);
  258. 						return;
  259. 					}
  260. 					if(isTimeout){
  261. 						reject(img);
  262. 					}
  263. 				}, 100);
  264. 			}else {
  265. 				const newimg = $("img").attr({
  266. 					name:GM_getValue("downloadName"),
  267. 				})
  268. 				await Check_and_get_nameAndsrc({img:newimg,checkSrc:true})
  269. 						.then((m)=>{
  270. 							let name = m.name;
  271. 							let src = m.src;
  272. 							$('<a></a>').attr({
  273. 								'href': src,
  274. 								'download': name,
  275. 							})[0].click();
  276. 						});
  277. 				await new Promise(resolve => setTimeout(resolve, 1000));
  278. 				GM_setValue("downloadType", "end");
  279. 				window.close();
  280. 			}
  281. 			
  282. 		})
  283. 	}
  284. 	this.Listening_Download_by_atag = ()=>{
  285. 		const locationHref = window.location.href;
  286. 		const GM_downloadSrc = GM_getValue("downloadSrc");
  287. 		if(!GM_downloadSrc){return;}
  288. 		if(GM_downloadSrc == locationHref|| locationHref.indexOf(GM_downloadSrc)>=0 || GM_downloadSrc.indexOf(locationHref)>=0 ){
  289. 			Download_img_by_atag($("img"),nowIsImgPage);
  290. 		}
  291. 	}
  292. 	
  293. 	
  294. 	/**
  295. 	 * @example Urls({url:url,timeout : 100})
  296.     */
  297.    this.UrlToBlob = (args)=>{UrlToBlob(args);}
  298. 	async function UrlToBlob(args) {
  299. 		return new Promise((resolve,reject)=>{
  300. 			if(!args.url){reject("no url");}
  301. 			if(args.timeout){
  302. 				const timeout = setTimeout(function() {reject("fetch timeout")}, args.timeout);
  303. 			}
  304. 			fetch(args.url)
  305. 					.then(response => {
  306. 						const contentLength = response.headers.get('Content-Length');
  307. 						const total = parseInt(contentLength, 10);
  308. 						let loaded = 0;
  309. 			
  310. 						// 克隆响应以便分别读取流和获得 Blob
  311. 						const clonedResponse = response.clone();
  312. 						const reader = clonedResponse.body.getReader();
  313. 			
  314. 						// 更新进度的函数
  315. 						function updateProgress({ done, value }) {
  316. 							if (done) {
  317. 								return; // 如果读取完毕，直接返回
  318. 							}
  319. 							loaded += value.byteLength; // 累加已加载字节
  320. 							const progress = (loaded / total) * 100; // 计算进度百分比
  321. 							console.log(`Loading: ${progress.toFixed(2)}%`);
  322. 							FetchShowProgress(progress);
  323. 							// 继续读取下一块数据
  324. 							return reader.read().then(updateProgress);
  325. 						}
  326. 			
  327. 						// 开始读取流以更新进度
  328. 						return reader.read().then(updateProgress).then(() => {
  329. 							// 完成后返回原始响应的 Blob
  330. 							return response.blob();
  331. 						});
  332. 					})
  333. 					.then(blob => {
  334. 						const blobUrl = URL.createObjectURL(blob);
  335. 						resolve(blobUrl);
  336. 					})
  337. 					.catch(error => {
  338. 						console.error('Error caching video:', error);
  339. 						reject(error);
  340. 					});
  341. 		});
  342. 	}
  343. 	this.FetchShowProgress = (pro)=>{FetchShowProgress(pro);}
  344. 	function FetchShowProgress(pro){
  345. 		if(this.maxDownloadingCounts==1 && this.imgs.length==1){
  346. 			window.GAIL.showmass(pro);
  347. 			$(".mass_top").css('font-size',"10vmin");
  348. 		}
  349. 	}
  350. 	
  351. 	this.Check_and_get_nameAndsrc = (args)=>{Check_and_get_nameAndsrc(args);}
  352. 	function Check_and_get_nameAndsrc(args){
  353. 		return new Promise(async (resolve,reject)=>{
  354. 			if(!args || !args.img){return reject();}
  355. 			let src = args.img.attr('big_src')||args.img.attr('big-src');
  356. 			if(!src){src = args.img.attr('src');}
  357. 			if(!src){src = args.img.attr('small_src')||args.img.attr('small-src');}
  358. 			if(!src){reject();}
  359. 			//console.log("check:"+src)
  360. 			if(args.checkSrc){
  361. 				try{
  362. 					await check_src_is_right(src);
  363. 				}catch(error){
  364. 					reject();
  365. 				}
  366. 			}
  367. 			let ext = src.match(/\.jpg|\.png|\.webp|\.gif|\.bmp/g);
  368. 			if(!ext){ext = '.png';}else{ext = ext[0];}
  369. 			let name = args.img.attr('name');
  370. 			if(!name){name = document.title + new Date().getTime() + ext;}
  371. 			resolve({name:name,src:src,img:args.img});
  372. 		});
  373. 	}
  374. 	
  375. 	this.check_src_is_right = (src)=>{check_src_is_right(src);}
  376. 	function check_src_is_right(src){
  377. 		return new Promise((resolve,reject)=>{
  378. 			let iimg = new Image();
  379. 			iimg.onload = function(){
  380. 				if(this.width*this.height*this.naturalWidth*this.naturalHeight==0){reject();}else{resolve();}
  381. 			}
  382. 			iimg.onerror = function(){reject();}
  383. 			iimg.src = src;
  384. 			setTimeout(function() {reject();}, 2000);
  385. 		})
  386. 	}
  387. 	
  388. 	function downloadText(text,name) {
  389. 	 
  390. 	    // 创建 Blob 对象
  391. 	    var blob = new Blob([text], { type: "text/plain" });
  392. 	 
  393. 	    // 创建下载链接
  394. 	    var url = URL.createObjectURL(blob);
  395. 	 
  396. 	    // 创建下载按钮
  397. 	    var a = document.createElement("a");
  398. 	    a.href = url;
  399. 	    a.download = name?name:"downloaded_text"+new Date().getTime()+".txt"; // 文件名
  400. 	    document.body.appendChild(a);
  401. 	 
  402. 	    // 模拟点击下载
  403. 	    a.click();
  404. 	 
  405. 	    // 清理
  406. 	    window.URL.revokeObjectURL(url);
  407. 	    document.body.removeChild(a);
  408. 	}
  409. 	this.Download_to_text = (url,name)=>{downloadText(url,name);}
  410. }
  411. $(function(){
  412. 	let dd = new Downloader()
  413. 	dd.Listening_Download_by_atag()
  414. })
  415.  
  416. window.Downloader = Downloader;

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