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GreasyFork Code: Syntax Highlight by CodeMirror

To syntax highlight GreasyFork Code by CodeMirror

As of 2024-01-28. See the latest version.

  1. // ==UserScript==
  2. // @name         GreasyFork Code: Syntax Highlight by CodeMirror
  3. // @namespace    Violentmonkey Scripts
  4. // @grant        none
  5. // @version      0.4.4
  6. // @author       CY Fung
  7. // @description  To syntax highlight GreasyFork Code by CodeMirror
  8. // @run-at       document-start
  9. // @inject-into  page
  10. // @unwrap
  11. // @license      MIT
  12. // @match        https://greatest.deepsurf.us/*
  13. // @match        https://sleazyfork.org/*
  14. //
  15. // ==/UserScript==
  16.  
  17.  
  18. (() => {
  19.  
  20.     const cdn = 'https://cdn.jsdelivr.net/npm/codemirror@5.65.16';
  21.     const resoruces = {
  22.         'codemirror.min.js': `${cdn}/lib/codemirror.min.js`,
  23.         'javascript.min.js': `${cdn}/mode/javascript/javascript.min.js`,
  24.         'css.min.js': `${cdn}/mode/css/css.min.js`,
  25.         'stylus.min.js': `${cdn}/mode/stylus/stylus.min.js`,
  26.         'active-line.min.js': `${cdn}/addon/selection/active-line.min.js`,
  27.         'search.js': `${cdn}/addon/search/search.js`,
  28.         'searchcursor.js': `${cdn}/addon/search/searchcursor.js`,
  29.         'jump-to-line.js': `${cdn}/addon/search/jump-to-line.js`,
  30.         'dialog.js': `${cdn}/addon/dialog/dialog.js`,
  31.         'codemirror.min.css': `${cdn}/lib/codemirror.min.css`,
  32.         'dialog.css': `${cdn}/addon/dialog/dialog.css`,
  33.         'material.css': `${cdn}/theme/material.css`,
  34.     }
  35.  
  36.     const doActionCSS = () => `
  37.  
  38.         .code-container{
  39.             height:100vh;
  40.         }
  41.         .code-container .CodeMirror, .code-container textarea{
  42.             height:100%;
  43.         }
  44.     `;
  45.  
  46.  
  47.     const global_css = () => `
  48.  
  49.         html {
  50.             line-height: 1.5;
  51.             -webkit-text-size-adjust: 100%;
  52.             -moz-tab-size: 4;
  53.             -o-tab-size: 4;
  54.             tab-size: 4;
  55.             font-family: ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji;
  56.             font-feature-settings: normal;
  57.             font-variation-settings: normal
  58.         }
  59.  
  60.         .code-container code, .code-container kbd, .code-container pre, .code-container samp {
  61.             font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;
  62.             font-size: 1em
  63.         }
  64.  
  65.         #script-content > .code-container[class] {
  66.             width: 100%;
  67.         }
  68.  
  69.         .code-container[class] {
  70.             border-radius: 0;
  71.         }
  72.  
  73.         .code-container[class] {
  74.             border-radius: 0;
  75.         }
  76.  
  77.         .code-container > pre:only-child{
  78.             padding:0;
  79.         }
  80.  
  81.         code.syntax-highlighted[class] {
  82.             font-family: monospace;
  83.             font-size: 13px;
  84.             font-variant-ligatures: contextual;
  85.             line-height: 1.15rem;
  86.             text-shadow: none !important;
  87.         }
  88.  
  89.         .hljs-comment[class], .hljs-quote[class] {
  90.             font-style: inherit;
  91.             color: #259789;
  92.         }
  93.  
  94.         .hljs-add-marker-width .marker-fixed-width[class] {
  95.             user-select: none !important;
  96.             width: calc(var(--hljs-marker-width, 0em) + 16px);
  97.             background: #f4f4f4;
  98.             padding-right: 6px;
  99.             margin-right: 4px;
  100.             contain: paint style;
  101.         }
  102.  
  103.         [dark] .hljs-add-marker-width .marker-fixed-width[class] {
  104.             background: #242424;
  105.             color: #b6b2b2;
  106.         }
  107.  
  108.         .marker-fixed-width[marker-text]::before {
  109.             content: attr(marker-text);
  110.         }
  111.  
  112.  
  113.         @keyframes cmLineNumberAppear {
  114.             from {
  115.                 background-position-x: 3px;
  116.             }
  117.             to {
  118.                 background-position-x: 4px;
  119.             }
  120.         }
  121.  
  122.         .CodeMirror-linenumber:not(:empty){
  123.             animation: cmLineNumberAppear 1ms linear 0s 1 normal forwards;
  124.         }
  125.  
  126.         .CodeMirror-linenumber[marker-text]::before {
  127.             content: attr(marker-text);
  128.         }
  129.         
  130.  
  131.     `;
  132.  
  133.  
  134.     const cssForCodePage = () => /\/scripts\/\d+[^\s\/\\]*\/code(\/|$)/.test(location.href) ? `
  135.  
  136.         html:not([dkkfv]) div.code-container {
  137.             visibility: collapse;
  138.         }
  139.  
  140.         .code-container,
  141.         .code-container pre:only-child,
  142.         .code-container pre:only-child code:only-child {
  143.             max-height: calc(100vh + 4px);
  144.             max-width: calc(100vw + 4px);
  145.         }
  146.     ` : '';
  147.  
  148.  
  149.     const cssAdd = () => `
  150.  
  151.         ${global_css()}
  152.  
  153.         ${cssForCodePage()}
  154.  
  155.         .code-container {
  156.             max-width: 100%;
  157.             display: inline-flex;
  158.             flex-direction: column;
  159.             overflow: auto;
  160.             border-radius: 8px;
  161.             max-height: 100%;
  162.             overflow: visible;
  163.         }
  164.         .code-container > pre:only-child {
  165.             max-width: 100%;
  166.             display: inline-flex;
  167.             flex-direction: column;
  168.             flex-grow: 1;
  169.             height: 0;
  170.         }
  171.         .code-container > pre:only-child > code:only-child {
  172.             max-width: 100%;
  173.             flex-grow: 1;
  174.             height: 0;
  175.         }
  176.         .code-container pre code {
  177.             padding: 0;
  178.             font-family: Consolas;
  179.             cursor: text;
  180.             overflow: auto;
  181.             box-sizing: border-box;
  182.         }
  183.         .code-container pre code .marker {
  184.             display: inline-block;
  185.             color: #636d83;
  186.             text-align: right;
  187.             padding-right: 20px;
  188.             user-select: none;
  189.             cursor: auto;
  190.         }
  191.  
  192.         .code-container[contenteditable]{
  193.           outline: 0 !important;
  194.           contain: strict;
  195.           box-sizing: border-box;
  196.         }
  197.  
  198.         .code-container[contenteditable]>pre[contenteditable="false"]{
  199.           contain: strict;
  200.           width: initial;
  201.           box-sizing: border-box;
  202.         }
  203.  
  204.         html {
  205.             --token-color-comment: #259789;
  206.  
  207.         }
  208.  
  209.         [dark] {
  210.             --token-color-comment:#59c6b9;
  211.         }
  212.  
  213.  
  214.         .CodeMirror .cm-comment[class] {
  215.             color: var(--token-color-comment);
  216.         }
  217.  
  218.  
  219.         html .CodeMirror .CodeMirror-linenumber[class] {
  220.             background: #f4f4f4;
  221.             color: #636d83;
  222.             padding-right: 6px;
  223.             margin-right: 4px;
  224.             contain: paint style;
  225.             user-select: none !important;
  226.         }
  227.  
  228.         [dark] .CodeMirror .CodeMirror-linenumber[class] {
  229.             background: #242424;
  230.             color: #b6b2b2;
  231.         }
  232.  
  233.         html .CodeMirror[class] {
  234.             background-color: inherit;
  235.         }
  236.  
  237.         html .CodeMirror[class] .CodeMirror-dialog[class] {
  238.             background-color: #fefefe;
  239.         }
  240.  
  241.         [dark] .CodeMirror[class] .CodeMirror-dialog[class] {
  242.             background-color: #25262d;
  243.         }
  244.  
  245.         html .CodeMirror .CodeMirror-activeline-background[class] {
  246.             background: inherit;
  247.             background-color: #8fd9da17;
  248.         }
  249.  
  250.         div.code-container .CodeMirror .CodeMirror-lines {
  251.             padding: 0;
  252.         }
  253.  
  254.         div.code-container .CodeMirror {
  255.             font-family: monospace;
  256.             font-size: 13px;
  257.             font-variant-ligatures: contextual;
  258.             line-height: 1.15rem;
  259.             text-shadow: none !important;
  260.         }
  261.  
  262.  
  263.     `;
  264.  
  265.     const Promise = (async function () { })().constructor;
  266.  
  267.     const delayPn = delay => new Promise((fn => setTimeout(fn, delay)));
  268.  
  269.     const PromiseExternal = ((resolve_, reject_) => {
  270.         const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  271.         return class PromiseExternal extends Promise {
  272.             constructor(cb = h) {
  273.                 super(cb);
  274.                 if (cb === h) {
  275.                     /** @type {(value: any) => void} */
  276.                     this.resolve = resolve_;
  277.                     /** @type {(reason?: any) => void} */
  278.                     this.reject = reject_;
  279.                 }
  280.             }
  281.         };
  282.     })();
  283.  
  284.     const pScript = new PromiseExternal();
  285.     const pElementQuery = new PromiseExternal();
  286.  
  287.     HTMLElement.prototype.getElementsByTagName331 = HTMLElement.prototype.getElementsByTagName;
  288.     Document.prototype.getElementsByTagName331 = Document.prototype.getElementsByTagName;
  289.  
  290.     HTMLElement.prototype.getElementsByTagName = getElementsByTagName;
  291.     Document.prototype.getElementsByTagName = getElementsByTagName;
  292.  
  293.     let byPass = true;
  294.  
  295.     const observablePromise = (proc, timeoutPromise) => {
  296.         let promise = null;
  297.         return {
  298.             obtain() {
  299.                 if (!promise) {
  300.                     promise = new Promise(resolve => {
  301.                         let mo = null;
  302.                         const f = () => {
  303.                             let t = proc();
  304.                             if (t) {
  305.                                 mo.disconnect();
  306.                                 mo.takeRecords();
  307.                                 mo = null;
  308.                                 resolve(t);
  309.                             }
  310.                         }
  311.                         mo = new MutationObserver(f);
  312.                         mo.observe(document, { subtree: true, childList: true })
  313.                         f();
  314.                         timeoutPromise && timeoutPromise.then(() => {
  315.                             resolve(null)
  316.                         });
  317.                     });
  318.                 }
  319.                 return promise
  320.             }
  321.         }
  322.     }
  323.  
  324.     const documentReady = new Promise(resolve => {
  325.         Promise.resolve().then(() => {
  326.             if (document.readyState !== 'loading') {
  327.                 resolve();
  328.             } else {
  329.                 window.addEventListener("DOMContentLoaded", resolve, false);
  330.             }
  331.         });
  332.     });
  333.  
  334.     function getElementsByTagName(tag) {
  335.         if (byPass) {
  336.             if (tag === 'pre' || tag === 'code' || tag === 'xmp') {
  337.                 if (location.pathname.endsWith('/code')) {
  338.                     pElementQuery.resolve();
  339.                     return [];
  340.                 }
  341.             }
  342.         }
  343.         return this.getElementsByTagName331(tag);
  344.     }
  345.  
  346.     async function onBodyHeadReadyAsync() {
  347.         await observablePromise(() => document.body && document.head).obtain();
  348.     }
  349.  
  350.  
  351.     // Load CSS
  352.     function loadJS(href) {
  353.  
  354.         return new Promise(resolve => {
  355.  
  356.             const script = document.createElement('script');
  357.             script.src = href;
  358.             script.onload = () => {
  359.                 resolve(script);
  360.             };
  361.             document.head.appendChild(script);
  362.  
  363.         });
  364.  
  365.     }
  366.  
  367.     // Load CSS
  368.     function loadCSS(href) {
  369.         const link = document.createElement('link');
  370.         link.rel = 'stylesheet';
  371.         link.href = href;
  372.         document.head.appendChild(link);
  373.         return link;
  374.     }
  375.  
  376.  
  377.  
  378.  
  379.  
  380.  
  381.     /** @param {HTMLElement} pre */
  382.     async function prepareCodeAreaAsync(pre) {
  383.  
  384.         if (pre.isConnected === false) return;
  385.  
  386.         for (const li of pre.querySelectorAll('li')) {
  387.             li.append(document.createTextNode('\n'));
  388.         }
  389.  
  390.         const codeElement = document.createElement('code');
  391.         // codeElement.classList.add('language-javascript');
  392.         codeElement.innerHTML = pre.innerHTML;
  393.  
  394.         // Clearing the original code container and appending the new one
  395.         // pre.classList = '';
  396.         pre.innerHTML = '';
  397.         // pre.appendChild(codeElement);
  398.  
  399.         // if (pre.querySelector('code')) return;
  400.         const code = codeElement;
  401.  
  402.         const codeContainer = pre.closest('.code-container');
  403.         if (codeContainer && codeContainer.querySelector('.code-container>pre:only-child')) {
  404.             // avoid selection to the outside by mouse dragging
  405.             codeContainer.setAttribute('contenteditable', '');
  406.             codeContainer.querySelector('.code-container>pre:only-child').setAttribute('contenteditable', 'false');
  407.         }
  408.  
  409.  
  410.         // let parentNode = code.parentNode;
  411.         // let nextNode = code.nextSibling;
  412.  
  413.         // code.remove();
  414.         let parentNode = pre;
  415.         let nextNode = null;
  416.         await Promise.resolve().then();
  417.  
  418.         // preset language
  419.         /*
  420.         const text = codeElement.textContent;
  421.         if(/(^|\n)\s*\/\/\s+==UserScript==\s*\n/.test(text)){
  422.             codeElement.classList.add('language-javascript');
  423.         }else if(/(^|\n)\s*\/\*\s+==UserStyle==\s*\n/.test(text)){
  424.             codeElement.classList.add('language-css');
  425.         }
  426.         */
  427.         let className = '';
  428.         if (pre.classList.contains('lang-js')) {
  429.             className = 'language-javascript';
  430.         } else if (pre.classList.contains('lang-css')) {
  431.  
  432.             const text = codeElement.textContent;
  433.             let m = /\n@preprocessor\s+([-_a-zA-Z]{3,8})\s*\n/.exec(text);
  434.             className = 'language-css'
  435.             if (m) {
  436.                 const preprocessor = m[1];
  437.                 if (preprocessor === 'stylus') {
  438.                     className = 'language-stylus';
  439.                 } else if (preprocessor === 'uso') {
  440.                     className = 'language-stylus';
  441.                 } else if (preprocessor === 'less') {
  442.                     className = 'language-less';
  443.                 } else if (preprocessor === 'default') {
  444.                     className = 'language-stylus';
  445.                 } else {
  446.                     className = 'language-stylus';
  447.                 }
  448.             }
  449.  
  450.  
  451.         }
  452.  
  453.  
  454.         if (!className) return;
  455.  
  456.         let mode = '';
  457.         if (className === 'language-javascript') mode = 'javascript';
  458.         if (className === 'language-stylus') mode = 'stylus';
  459.         if (className === 'language-less') mode = 'less';
  460.         if (className === 'language-css') mode = 'css';
  461.  
  462.         if (!mode) return;
  463.  
  464.  
  465.  
  466.         let textarea = document.createElement('textarea');
  467.         textarea.value = `${code.textContent}`;
  468.         textarea.readOnly = true;
  469.         textarea.id = 'editor651';
  470.  
  471.  
  472.         // textarea.classList.add('code-container')
  473.  
  474.         textarea.style.width = '100%';
  475.         textarea.style.height = '100vh';
  476.  
  477.         parentNode.insertBefore(textarea, nextNode);
  478.  
  479.  
  480.         let editor651 = CodeMirror.fromTextArea(document.querySelector('#editor651'), {
  481.  
  482.             mode: mode,
  483.             theme: document.documentElement.hasAttribute('dark') ? 'material' : 'default',
  484.  
  485.             readOnly: true,
  486.             styleActiveLine: true,
  487.             lineNumbers: true,
  488.             extraKeys: { "Alt-F": "findPersistent" }
  489.         });
  490.         editor651.save();
  491.  
  492.  
  493.  
  494.     }
  495.  
  496.     const documentBodyHeadReady = onBodyHeadReadyAsync();
  497.  
  498.     documentBodyHeadReady.then(async () => {
  499.  
  500.         if (!location.pathname.endsWith('/code')) {
  501.             return;
  502.         }
  503.  
  504.         document.head.appendChild(document.createElement('style')).textContent = `${cssAdd()}`;
  505.  
  506.         await loadJS(resoruces['codemirror.min.js']);
  507.  
  508.         await Promise.all([
  509.             loadJS(resoruces['javascript.min.js']),
  510.             loadJS(resoruces['css.min.js']),
  511.             loadJS(resoruces['stylus.min.js']),
  512.             loadJS(resoruces['active-line.min.js']),
  513.             loadJS(resoruces['search.js']),
  514.             loadJS(resoruces['searchcursor.js']),
  515.             loadJS(resoruces['jump-to-line.js']),
  516.             loadJS(resoruces['dialog.js'])
  517.         ]);
  518.  
  519.         if (document.documentElement.hasAttribute('dark')) {
  520.  
  521.             // TBC
  522.             loadCSS(resoruces['codemirror.min.css']);
  523.             loadCSS(resoruces['dialog.css']);
  524.             loadCSS(resoruces['material.css']);
  525.  
  526.         } else {
  527.  
  528.             loadCSS(resoruces['codemirror.min.css']);
  529.             loadCSS(resoruces['dialog.css']);
  530.         }
  531.  
  532.  
  533.         pScript.resolve();
  534.  
  535.  
  536.  
  537.  
  538.     });
  539.  
  540.     let keydownActive = false;
  541.  
  542.     documentReady.then(async () => {
  543.  
  544.         if (!location.pathname.endsWith('/code')) {
  545.             byPass = false;
  546.             return;
  547.         }
  548.  
  549.         await pScript.then();
  550.  
  551.         await Promise.race([pElementQuery, delayPn(800)]);
  552.  
  553.         const targets = document.querySelectorAll('.code-container pre.lang-js, .code-container pre.lang-css');
  554.  
  555.         if (targets.length === 0) return;
  556.  
  557.         await delayPn(40);
  558.  
  559.         document.head.appendChild(document.createElement('style')).textContent = doActionCSS();
  560.  
  561.         await delayPn(40);
  562.  
  563.         byPass = false;
  564.  
  565.         // Code highlighting
  566.         const promises = [...targets].map(prepareCodeAreaAsync)
  567.         await Promise.all(promises);
  568.  
  569.         await delayPn(40);
  570.         document.documentElement.setAttribute('dkkfv', '');
  571.         keydownActive = true;
  572.  
  573.     });
  574.  
  575.     function selectAllWithinElement(element) {
  576.         window.getSelection().removeAllRanges();
  577.         let range = document.createRange();
  578.         if (element) {
  579.             range.selectNodeContents(element);
  580.             window.getSelection().addRange(range);
  581.         } else {
  582.             console.error('Element not found with ID:', element);
  583.         }
  584.     }
  585.     document.addEventListener('keydown', (e) => {
  586.         if (keydownActive && e && e.code === 'KeyA' && e.isTrusted && (e.metaKey || e.ctrlKey) && !e.shiftKey && !e.altKey) {
  587.  
  588.             const target = e.target;
  589.             const container = target ? target.closest('div.code-container') : null;
  590.             const code = container ? container.querySelector('code') : null;
  591.  
  592.             if (container && code) {
  593.  
  594.                 e.preventDefault();
  595.                 e.stopPropagation();
  596.                 e.stopImmediatePropagation();
  597.  
  598.                 setTimeout(() => {
  599.                     selectAllWithinElement(code);
  600.                 }, 1)
  601.  
  602.             }
  603.  
  604.         }
  605.     }, true);
  606.  
  607.  
  608.     const cmLineNumberAppearFn = (evt) => {
  609.         const elm = evt.target;
  610.         if (!(elm instanceof HTMLElement)) return;
  611.  
  612.         elm.setAttribute('marker-text', elm.textContent.trim());
  613.         elm.textContent = '';
  614.     }
  615.  
  616.     document.addEventListener('animationstart', (evt) => {
  617.         const animationName = evt.animationName;
  618.         if (!animationName) return;
  619.         if (animationName === 'cmLineNumberAppear') cmLineNumberAppearFn(evt);
  620.     }, { capture: true, passive: true });
  621.  
  622.  
  623. })();