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GreasyFork: download script button

If you have a script manager and you want to download some script without installing it, this script will help

当前为 2023-11-12 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name          GreasyFork: download script button
  3. // @description   If you have a script manager and you want to download some script without installing it, this script will help
  4. // @author        Konf
  5. // @version       2.1.2
  6. // @namespace     https://gf.qytechs.cn/users/424058
  7. // @icon          https://gf.qytechs.cn/vite/assets/blacklogo96-e0c2c761.png
  8. // @match         https://gf.qytechs.cn/*/scripts/*
  9. // @match         https://sleazyfork.org/*/scripts/*
  10. // @compatible    Chrome
  11. // @compatible    Opera
  12. // @compatible    Firefox
  13. // @run-at        document-end
  14. // @grant         GM_addStyle
  15. // @noframes
  16. // ==/UserScript==
  17.  
  18. /* jshint esversion: 8 */
  19.  
  20. (function() {
  21.   'use strict';
  22.  
  23.   const i18n = {
  24.     download: 'download',
  25.     downloadWithoutInstalling: 'downloadWithoutInstalling',
  26.     failedToDownload: 'failedToDownload',
  27.   };
  28.  
  29.   const translate = (function() {
  30.     const userLang = location.pathname.split('/')[1];
  31.     const strings = {
  32.       'en': {
  33.         [i18n.download]: 'Download ⇩',
  34.         [i18n.downloadWithoutInstalling]: 'Download without installing',
  35.         [i18n.failedToDownload]:
  36.           'Failed to download the script. There is might be more info in the browser console',
  37.       },
  38.       'ru': {
  39.         [i18n.download]: 'Скачать ⇩',
  40.         [i18n.downloadWithoutInstalling]: 'Скачать не устанавливая',
  41.         [i18n.failedToDownload]:
  42.           'Не удалось скачать скрипт. Больше информации может быть в консоли браузера',
  43.       },
  44.       'zh-CN': {
  45.         [i18n.download]: '下载 ⇩',
  46.         [i18n.downloadWithoutInstalling]: '下载此脚本',
  47.         [i18n.failedToDownload]: '无法下载此脚本',
  48.       },
  49.     };
  50.  
  51.     return id => (strings[userLang] || strings.en)[id] || strings.en[id];
  52.   }());
  53.  
  54.   const installBtns = document.querySelectorAll('a.install-link');
  55.   const installArea = document.querySelector('div#install-area');
  56.   const installHelpLinks = document.querySelectorAll('a.install-help-link');
  57.   const suggestions = document.querySelector('div#script-feedback-suggestion');
  58.   const libraryRequire = document.querySelector('div#script-content > p > code');
  59.  
  60.   // if a script/style is detected
  61.   if (
  62.     installArea &&
  63.     (installBtns.length > 0) &&
  64.     (installBtns.length === installHelpLinks.length)
  65.   ) {
  66.     for (let i = 0; i < installBtns.length; i++) {
  67.       mountScriptDownloadButton(installBtns[i], installArea, installHelpLinks[i]);
  68.     }
  69.   }
  70.   // or maybe a library
  71.   else if (suggestions && libraryRequire) {
  72.     mountLibraryDownloadButton(suggestions, libraryRequire);
  73.   }
  74.  
  75.   function mountScriptDownloadButton(
  76.     installBtn,
  77.     installArea,
  78.     installHelpLink,
  79.   ) {
  80.     if (!installBtn.href) throw new Error('script href is not found');
  81.  
  82.     // https://img.icons8.com/pastel-glyph/64/ffffff/download.png
  83.     // array to fold the string in a code editor
  84.     const downloadIconBase64 = [
  85.       'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEAAAABACAYAAACqaX',
  86.       'HeAAAABmJLR0QA/wD/AP+gvaeTAAABgUlEQVR4nO3ZTU6DUAAE4HnEk+jWG3TrHV',
  87.       'wY3XoEt23cGleamtRtTbyPS3sCV0bXjptHRAIEsM/hZ76kCZRHGaZAGwDMzMzMbJ',
  88.       '6CasMkMwBncXYbQvhSZZEgecEf56ocmWrDAA4L00eqEMoCBsEFqAOouQB1ADUXoA',
  89.       '6g5gLUAdRcgDqAmgtQB1BzAeoAakkLIHlN8pPkDcnWd59IBpK3cd1VyoxJkfwo3P',
  90.       'V5KJZAcllYtiy8H+LY3HvKjKlPgU1h+hLAuulIiMvWcWzVZ4xL/Dbv+Nsjyax8BM',
  91.       'Sx96Wxm3jzdLwaSliVCpjezucqzmuSfKuZJkvXi0moORKqTOebL2tRwnR3PtdQwv',
  92.       'R3PldRgmznlc8GA4DTOPscQqAqy6x1+X8+6Ke5yfNxIE9z6/TN1+XCM4inuQ165Z',
  93.       'vHz04DF6AOoOYC1AHUXIA6gNpBz/UWJK/2muTvFn1W6lvASXyNXpdTYJcsxf69th',
  94.       '3Y5QjYAiCA485x/tcLgCd1CDMzMzMbum8+xtkWw6QCvwAAAABJRU5ErkJggg==',
  95.     ].join('');
  96.  
  97.     GM_addStyle([`
  98.       .GF-DSB__script-download-button {
  99.         position: relative;
  100.         padding: 8px 22px;
  101.         cursor: pointer;
  102.         border: none;
  103.         background: #0F750F;
  104.         transition: box-shadow 0.2s;
  105.       }
  106.  
  107.       .GF-DSB__script-download-button:hover,
  108.       .GF-DSB__script-download-button:focus {
  109.         box-shadow: 0 8px 16px 0 rgb(0 0 0 / 20%), 0 6px 20px 0 rgb(0 0 0 / 19%);
  110.       }
  111.  
  112.  
  113.       .GF-DSB__script-download-icon {
  114.         position: absolute;
  115.       }
  116.  
  117.       .GF-DSB__script-download-icon--download {
  118.         width: 30px;
  119.         height: 30px;
  120.         top: 4px;
  121.         left: 7px;
  122.       }
  123.  
  124.       .GF-DSB__script-download-icon--loading,
  125.       .GF-DSB__script-download-icon--loading:after {
  126.         border-radius: 50%;
  127.         width: 16px;
  128.         height: 16px;
  129.       }
  130.  
  131.       .GF-DSB__script-download-icon--loading {
  132.         top: 8px;
  133.         left: 11px;
  134.         border-top: 3px solid rgba(255, 255, 255, 0.2);
  135.         border-right: 3px solid rgba(255, 255, 255, 0.2);
  136.         border-bottom: 3px solid rgba(255, 255, 255, 0.2);
  137.         border-left: 3px solid #ffffff;
  138.         transform: translateZ(0);
  139.         object-position: -99999px;
  140.         animation: GF-DSB__script-download-loading-icon 1.1s infinite linear;
  141.       }
  142.  
  143.       @keyframes GF-DSB__script-download-loading-icon {
  144.         0% {
  145.           transform: rotate(0deg);
  146.         }
  147.         100% {
  148.           transform: rotate(360deg);
  149.         }
  150.       }
  151.     `][0]);
  152.  
  153.     const b = document.createElement('a');
  154.     const bIcon = document.createElement('img');
  155.  
  156.     b.href = '#';
  157.     b.title = translate(i18n.downloadWithoutInstalling);
  158.     b.draggable = false;
  159.     b.className = 'GF-DSB__script-download-button';
  160.  
  161.     bIcon.src = downloadIconBase64;
  162.     bIcon.draggable = false;
  163.     bIcon.className =
  164.       'GF-DSB__script-download-icon GF-DSB__script-download-icon--download';
  165.  
  166.     installHelpLink.style.position = 'relative'; // shadows bugfix
  167.  
  168.     b.appendChild(bIcon);
  169.     installArea.insertBefore(b, installHelpLink);
  170.  
  171.     // against doubleclicks
  172.     let isFetchingAllowed = true;
  173.  
  174.     async function clicksHandler(ev) {
  175.       ev.preventDefault();
  176.  
  177.       setTimeout(() => b === document.activeElement && b.blur(), 250);
  178.  
  179.       if (isFetchingAllowed === false) return;
  180.  
  181.       isFetchingAllowed = false;
  182.       bIcon.className =
  183.         'GF-DSB__script-download-icon GF-DSB__script-download-icon--loading';
  184.  
  185.       try {
  186.         await downloadScript({
  187.           fileExt: `.user.${installBtn.dataset.installFormat || 'txt'}`,
  188.           href: installBtn.href,
  189.           name: installBtn.dataset.scriptName,
  190.         });
  191.       } catch (e) {
  192.         console.error(e);
  193.         alert(`${translate(i18n.failedToDownload)}: \n${e}`);
  194.       } finally {
  195.         setTimeout(() => {
  196.           isFetchingAllowed = true;
  197.           bIcon.className =
  198.             'GF-DSB__script-download-icon GF-DSB__script-download-icon--download';
  199.         }, 300);
  200.       }
  201.     }
  202.  
  203.     b.addEventListener('click', clicksHandler);
  204.     b.addEventListener('auxclick', e => e.button === 1 && clicksHandler(e));
  205.   }
  206.  
  207.   function mountLibraryDownloadButton(suggestions, libraryRequire) {
  208.     const [
  209.       libraryHref,
  210.       libraryName,
  211.     ] = libraryRequire.innerText.match(
  212.       /\/\/ @require (https:\/\/.+\/scripts\/\d+.+\/code\/(.*)\.js\?version=\d+)/
  213.     ).slice(1);
  214.  
  215.     // this probably is completely useless but whatever
  216.     if (!libraryHref) throw new Error('library href is not found');
  217.  
  218.     GM_addStyle([`
  219.       .GF-DSB__library-download-button {
  220.         transition: box-shadow 0.2s;
  221.       }
  222.  
  223.       .GF-DSB__library-download-button--loading {
  224.         animation: GF-DSB__loading-text 1s infinite linear;
  225.       }
  226.  
  227.       @keyframes GF-DSB__loading-text {
  228.         50% {
  229.           opacity: 0.4;
  230.         }
  231.       }
  232.     `][0]);
  233.  
  234.     const b = document.createElement('a');
  235.  
  236.     b.href = '#';
  237.     b.draggable = false;
  238.     b.innerText = translate(i18n.download);
  239.     b.className = 'GF-DSB__library-download-button';
  240.  
  241.     suggestions.appendChild(b);
  242.  
  243.     // against doubleclicks
  244.     let isFetchingAllowed = true;
  245.  
  246.     async function clicksHandler(ev) {
  247.       ev.preventDefault();
  248.  
  249.       setTimeout(() => b === document.activeElement && b.blur(), 250);
  250.  
  251.       if (isFetchingAllowed === false) return;
  252.  
  253.       isFetchingAllowed = false;
  254.       b.className =
  255.         'GF-DSB__library-download-button GF-DSB__library-download-button--loading';
  256.  
  257.       try {
  258.         await downloadScript({
  259.           fileExt: '.js',
  260.           href: libraryHref,
  261.           name: libraryName,
  262.         });
  263.       } catch (e) {
  264.         console.error(e);
  265.         alert(`${translate(i18n.failedToDownload)}: \n${e}`);
  266.       } finally {
  267.         setTimeout(() => {
  268.           isFetchingAllowed = true;
  269.           b.className = 'GF-DSB__library-download-button';
  270.         }, 300);
  271.       }
  272.     }
  273.  
  274.     b.addEventListener('click', clicksHandler);
  275.     b.addEventListener('auxclick', e => e.button === 1 && clicksHandler(e));
  276.   }
  277.  
  278.   // utils --------------------------------------------------------------------
  279.  
  280.   async function downloadScript({
  281.     fileExt = '.txt',
  282.     href,
  283.     name = Date.now(),
  284.   } = {}) {
  285.     if (!href) throw new Error('href is missing');
  286.  
  287.     const blob = await (await fetch(href)).blob();
  288.     const url = window.URL.createObjectURL(blob);
  289.     const a = document.createElement('a');
  290.  
  291.     a.href = url;
  292.     a.download = `${name}${fileExt}`;
  293.     document.body.appendChild(a); // is needed due to firefox bug
  294.     a.click();
  295.     a.remove();
  296.  
  297.     window.URL.revokeObjectURL(url);
  298.   }
  299. }());

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