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GreasyFork Code: Syntax Highlight by CodeMirror

To syntax highlight GreasyFork Code by CodeMirror

As of 2024-01-24. See the latest version.

  1. // ==UserScript==
  2. // @name         GreasyFork Code: Syntax Highlight by CodeMirror
  3. // @namespace    Violentmonkey Scripts
  4. // @grant        none
  5. // @version      0.4.0
  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.         'active-line.min.js': `${cdn}/addon/selection/active-line.min.js`,
  25.         'search.js': `${cdn}/addon/search/search.js`,
  26.         'searchcursor.js': `${cdn}/addon/search/searchcursor.js`,
  27.         'jump-to-line.js': `${cdn}/addon/search/jump-to-line.js`,
  28.         'dialog.js': `${cdn}/addon/dialog/dialog.js`,
  29.         'codemirror.min.css': `${cdn}/lib/codemirror.min.css`,
  30.         'dialog.css': `${cdn}/addon/dialog/dialog.css`,
  31.         'material.css': `${cdn}/theme/material.css`,
  32.     }
  33.  
  34.     const doActionCSS = () => `
  35.  
  36.         .code-container{
  37.             height:100vh;
  38.         }
  39.         .code-container .CodeMirror, .code-container textarea{
  40.             height:100%;
  41.         }
  42.     `;
  43.  
  44.  
  45.     const global_css = () => `
  46.  
  47.         html {
  48.             line-height: 1.5;
  49.             -webkit-text-size-adjust: 100%;
  50.             -moz-tab-size: 4;
  51.             -o-tab-size: 4;
  52.             tab-size: 4;
  53.             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;
  54.             font-feature-settings: normal;
  55.             font-variation-settings: normal
  56.         }
  57.  
  58.         .code-container code, .code-container kbd, .code-container pre, .code-container samp {
  59.             font-family: ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;
  60.             font-size: 1em
  61.         }
  62.  
  63.         #script-content > .code-container[class] {
  64.             width: 100%;
  65.         }
  66.  
  67.         .code-container[class] {
  68.             border-radius: 0;
  69.         }
  70.  
  71.         .code-container[class] {
  72.             border-radius: 0;
  73.         }
  74.  
  75.         .code-container > pre:only-child{
  76.             padding:0;
  77.         }
  78.  
  79.         code.syntax-highlighted[class] {
  80.             font-family: monospace;
  81.             font-size: 13px;
  82.             font-variant-ligatures: contextual;
  83.             line-height: 1.15rem;
  84.             text-shadow: none !important;
  85.         }
  86.  
  87.         .hljs-comment[class], .hljs-quote[class] {
  88.             font-style: inherit;
  89.             color: #259789;
  90.         }
  91.  
  92.         .hljs-add-marker-width .marker-fixed-width[class] {
  93.             user-select: none !important;
  94.             width: calc(var(--hljs-marker-width, 0em) + 16px);
  95.             background: #f4f4f4;
  96.             padding-right: 6px;
  97.             margin-right: 4px;
  98.             contain: paint style;
  99.         }
  100.  
  101.         [dark] .hljs-add-marker-width .marker-fixed-width[class] {
  102.             background: #242424;
  103.             color: #b6b2b2;
  104.         }
  105.  
  106.         .marker-fixed-width[marker-text]::before {
  107.             content: attr(marker-text);
  108.         }
  109.  
  110.  
  111.         @keyframes cmLineNumberAppear {
  112.             from {
  113.                 background-position-x: 3px;
  114.             }
  115.             to {
  116.                 background-position-x: 4px;
  117.             }
  118.         }
  119.  
  120.         .CodeMirror-linenumber:not(:empty){
  121.             animation: cmLineNumberAppear 1ms linear 0s 1 normal forwards;
  122.         }
  123.  
  124.         .CodeMirror-linenumber[marker-text]::before {
  125.             content: attr(marker-text);
  126.         }
  127.         
  128.  
  129.     `;
  130.  
  131.  
  132.     const cssForCodePage = () => /\/scripts\/\d+[^\s\/\\]*\/code(\/|$)/.test(location.href) ? `
  133.  
  134.         html:not([dkkfv]) div.code-container {
  135.             visibility: collapse;
  136.         }
  137.  
  138.         .code-container,
  139.         .code-container pre:only-child,
  140.         .code-container pre:only-child code:only-child {
  141.             max-height: calc(100vh + 4px);
  142.             max-width: calc(100vw + 4px);
  143.         }
  144.     ` : '';
  145.  
  146.  
  147.     const cssAdd = () => `
  148.  
  149.         ${global_css()}
  150.  
  151.         ${cssForCodePage()}
  152.  
  153.         .code-container {
  154.             max-width: 100%;
  155.             display: inline-flex;
  156.             flex-direction: column;
  157.             overflow: auto;
  158.             border-radius: 8px;
  159.             max-height: 100%;
  160.             overflow: visible;
  161.         }
  162.         .code-container > pre:only-child {
  163.             max-width: 100%;
  164.             display: inline-flex;
  165.             flex-direction: column;
  166.             flex-grow: 1;
  167.             height: 0;
  168.         }
  169.         .code-container > pre:only-child > code:only-child {
  170.             max-width: 100%;
  171.             flex-grow: 1;
  172.             height: 0;
  173.         }
  174.         .code-container pre code {
  175.             padding: 0;
  176.             font-family: Consolas;
  177.             cursor: text;
  178.             overflow: auto;
  179.             box-sizing: border-box;
  180.         }
  181.         .code-container pre code .marker {
  182.             display: inline-block;
  183.             color: #636d83;
  184.             text-align: right;
  185.             padding-right: 20px;
  186.             user-select: none;
  187.             cursor: auto;
  188.         }
  189.  
  190.         .code-container[contenteditable]{
  191.           outline: 0 !important;
  192.           contain: strict;
  193.           box-sizing: border-box;
  194.         }
  195.  
  196.         .code-container[contenteditable]>pre[contenteditable="false"]{
  197.           contain: strict;
  198.           width: initial;
  199.           box-sizing: border-box;
  200.         }
  201.  
  202.         html {
  203.             --token-color-comment: #259789;
  204.  
  205.         }
  206.  
  207.         [dark] {
  208.             --token-color-comment:#59c6b9;
  209.         }
  210.  
  211.  
  212.         .CodeMirror .cm-comment[class] {
  213.             color: var(--token-color-comment);
  214.         }
  215.  
  216.  
  217.         html .CodeMirror .CodeMirror-linenumber[class] {
  218.             background: #f4f4f4;
  219.             color: #636d83;
  220.             padding-right: 6px;
  221.             margin-right: 4px;
  222.             contain: paint style;
  223.             user-select: none !important;
  224.         }
  225.  
  226.         [dark] .CodeMirror .CodeMirror-linenumber[class] {
  227.             background: #242424;
  228.             color: #b6b2b2;
  229.         }
  230.  
  231.         html .CodeMirror[class] {
  232.             background-color: inherit;
  233.         }
  234.         html .CodeMirror .CodeMirror-activeline-background[class] {
  235.             background: inherit;
  236.             background-color: #8fd9da17;
  237.         }
  238.  
  239.         div.code-container .CodeMirror .CodeMirror-lines {
  240.             padding: 0;
  241.         }
  242.  
  243.         div.code-container .CodeMirror {
  244.             font-family: monospace;
  245.             font-size: 13px;
  246.             font-variant-ligatures: contextual;
  247.             line-height: 1.15rem;
  248.             text-shadow: none !important;
  249.         }
  250.  
  251.  
  252.     `;
  253.  
  254.     const Promise = (async function () { })().constructor;
  255.  
  256.     const delayPn = delay => new Promise((fn => setTimeout(fn, delay)));
  257.  
  258.     const PromiseExternal = ((resolve_, reject_) => {
  259.         const h = (resolve, reject) => { resolve_ = resolve; reject_ = reject };
  260.         return class PromiseExternal extends Promise {
  261.             constructor(cb = h) {
  262.                 super(cb);
  263.                 if (cb === h) {
  264.                     /** @type {(value: any) => void} */
  265.                     this.resolve = resolve_;
  266.                     /** @type {(reason?: any) => void} */
  267.                     this.reject = reject_;
  268.                 }
  269.             }
  270.         };
  271.     })();
  272.  
  273.     const pScript = new PromiseExternal();
  274.     const pElementQuery = new PromiseExternal();
  275.  
  276.     HTMLElement.prototype.getElementsByTagName331 = HTMLElement.prototype.getElementsByTagName;
  277.     Document.prototype.getElementsByTagName331 = Document.prototype.getElementsByTagName;
  278.  
  279.     HTMLElement.prototype.getElementsByTagName = getElementsByTagName;
  280.     Document.prototype.getElementsByTagName = getElementsByTagName;
  281.  
  282.     let byPass = true;
  283.  
  284.     const observablePromise = (proc, timeoutPromise) => {
  285.         let promise = null;
  286.         return {
  287.             obtain() {
  288.                 if (!promise) {
  289.                     promise = new Promise(resolve => {
  290.                         let mo = null;
  291.                         const f = () => {
  292.                             let t = proc();
  293.                             if (t) {
  294.                                 mo.disconnect();
  295.                                 mo.takeRecords();
  296.                                 mo = null;
  297.                                 resolve(t);
  298.                             }
  299.                         }
  300.                         mo = new MutationObserver(f);
  301.                         mo.observe(document, { subtree: true, childList: true })
  302.                         f();
  303.                         timeoutPromise && timeoutPromise.then(() => {
  304.                             resolve(null)
  305.                         });
  306.                     });
  307.                 }
  308.                 return promise
  309.             }
  310.         }
  311.     }
  312.  
  313.     const documentReady = new Promise(resolve => {
  314.         Promise.resolve().then(() => {
  315.             if (document.readyState !== 'loading') {
  316.                 resolve();
  317.             } else {
  318.                 window.addEventListener("DOMContentLoaded", resolve, false);
  319.             }
  320.         });
  321.     });
  322.  
  323.     function getElementsByTagName(tag) {
  324.         if (byPass) {
  325.             if (tag === 'pre' || tag === 'code' || tag === 'xmp') {
  326.                 if (location.pathname.endsWith('/code')) {
  327.                     pElementQuery.resolve();
  328.                     return [];
  329.                 }
  330.             }
  331.         }
  332.         return this.getElementsByTagName331(tag);
  333.     }
  334.  
  335.     async function onBodyHeadReadyAsync() {
  336.         await observablePromise(() => document.body && document.head).obtain();
  337.     }
  338.  
  339.  
  340.     // Load CSS
  341.     function loadJS(href) {
  342.  
  343.         return new Promise(resolve => {
  344.  
  345.             const script = document.createElement('script');
  346.             script.src = href;
  347.             script.onload = () => {
  348.                 resolve(script);
  349.             };
  350.             document.head.appendChild(script);
  351.  
  352.         });
  353.  
  354.     }
  355.  
  356.     // Load CSS
  357.     function loadCSS(href) {
  358.         const link = document.createElement('link');
  359.         link.rel = 'stylesheet';
  360.         link.href = href;
  361.         document.head.appendChild(link);
  362.         return link;
  363.     }
  364.  
  365.  
  366.  
  367.  
  368.  
  369.  
  370.     /** @param {HTMLElement} pre */
  371.     async function prepareCodeAreaAsync(pre) {
  372.  
  373.         if (pre.isConnected === false) return;
  374.  
  375.         for (const li of pre.querySelectorAll('li')) {
  376.             li.append(document.createTextNode('\n'));
  377.         }
  378.  
  379.         const codeElement = document.createElement('code');
  380.         // codeElement.classList.add('language-javascript');
  381.         codeElement.innerHTML = pre.innerHTML;
  382.  
  383.         // Clearing the original code container and appending the new one
  384.         // pre.classList = '';
  385.         pre.innerHTML = '';
  386.         // pre.appendChild(codeElement);
  387.  
  388.         // if (pre.querySelector('code')) return;
  389.         const code = codeElement;
  390.  
  391.         const codeContainer = pre.closest('.code-container');
  392.         if (codeContainer && codeContainer.querySelector('.code-container>pre:only-child')) {
  393.             // avoid selection to the outside by mouse dragging
  394.             codeContainer.setAttribute('contenteditable', '');
  395.             codeContainer.querySelector('.code-container>pre:only-child').setAttribute('contenteditable', 'false');
  396.         }
  397.  
  398.  
  399.         // let parentNode = code.parentNode;
  400.         // let nextNode = code.nextSibling;
  401.  
  402.         // code.remove();
  403.         let parentNode = pre;
  404.         let nextNode = null;
  405.         await Promise.resolve().then();
  406.  
  407.         // preset language
  408.         /*
  409.         const text = codeElement.textContent;
  410.         if(/(^|\n)\s*\/\/\s+==UserScript==\s*\n/.test(text)){
  411.             codeElement.classList.add('language-javascript');
  412.         }else if(/(^|\n)\s*\/\*\s+==UserStyle==\s*\n/.test(text)){
  413.             codeElement.classList.add('language-css');
  414.         }
  415.         */
  416.         let className = '';
  417.         if (pre.classList.contains('lang-js')) {
  418.             className = 'language-javascript';
  419.         } else if (pre.classList.contains('lang-css')) {
  420.  
  421.             const text = codeElement.textContent;
  422.             let m = /\n@preprocessor\s+([-_a-zA-Z]{3,8})\s*\n/.exec(text);
  423.             className = 'language-css'
  424.             if (m) {
  425.                 const preprocessor = m[1];
  426.                 if (preprocessor === 'stylus') {
  427.                     className = 'language-stylus';
  428.                 } else if (preprocessor === 'uso') {
  429.                     className = 'language-stylus';
  430.                 } else if (preprocessor === 'less') {
  431.                     className = 'language-less';
  432.                 } else if (preprocessor === 'default') {
  433.                     className = 'language-stylus';
  434.                 } else {
  435.                     className = 'language-stylus';
  436.                 }
  437.             }
  438.  
  439.  
  440.         }
  441.  
  442.  
  443.         if (!className) return;
  444.  
  445.         let mode = '';
  446.         if (className === 'language-javascript') mode = 'javascript';
  447.         if (className === 'language-stylus') mode = 'stylus';
  448.         if (className === 'language-less') mode = 'less';
  449.         if (className === 'language-css') mode = 'css';
  450.  
  451.         if (!mode) return;
  452.  
  453.  
  454.  
  455.         let textarea = document.createElement('textarea');
  456.         textarea.value = `${code.textContent}`;
  457.         textarea.readOnly = true;
  458.         textarea.id = 'editor651';
  459.  
  460.  
  461.         // textarea.classList.add('code-container')
  462.  
  463.         textarea.style.width = '100%';
  464.         textarea.style.height = '100vh';
  465.  
  466.         parentNode.insertBefore(textarea, nextNode);
  467.  
  468.  
  469.         let editor651 = CodeMirror.fromTextArea(document.querySelector('#editor651'), {
  470.  
  471.             mode: mode,
  472.             theme: document.documentElement.hasAttribute('dark') ? 'material' : '',
  473.  
  474.             readOnly: true,
  475.             styleActiveLine: true,
  476.             lineNumbers: true,
  477.             extraKeys: { "Alt-F": "findPersistent" }
  478.         });
  479.         editor651.save();
  480.  
  481.  
  482.  
  483.     }
  484.  
  485.     const documentBodyHeadReady = onBodyHeadReadyAsync();
  486.  
  487.     documentBodyHeadReady.then(async () => {
  488.  
  489.         if (!location.pathname.endsWith('/code')) {
  490.             return;
  491.         }
  492.  
  493.         document.head.appendChild(document.createElement('style')).textContent = `${cssAdd()}`;
  494.  
  495.         await loadJS(resoruces['codemirror.min.js']);
  496.  
  497.         await Promise.all([
  498.             loadJS(resoruces['javascript.min.js']),
  499.             loadJS(resoruces['active-line.min.js']),
  500.             loadJS(resoruces['search.js']),
  501.             loadJS(resoruces['searchcursor.js']),
  502.             loadJS(resoruces['jump-to-line.js']),
  503.             loadJS(resoruces['dialog.js'])
  504.         ]);
  505.  
  506.         if (document.documentElement.hasAttribute('dark')) {
  507.  
  508.             // TBC
  509.             loadCSS(resoruces['codemirror.min.css']);
  510.             loadCSS(resoruces['dialog.css']);
  511.             loadCSS(resoruces['material.css']);
  512.  
  513.         } else {
  514.  
  515.             loadCSS(resoruces['codemirror.min.css']);
  516.             loadCSS(resoruces['dialog.css']);
  517.         }
  518.  
  519.  
  520.         pScript.resolve();
  521.  
  522.  
  523.  
  524.  
  525.     });
  526.  
  527.     let keydownActive = false;
  528.  
  529.     documentReady.then(async () => {
  530.  
  531.         if (!location.pathname.endsWith('/code')) {
  532.             byPass = false;
  533.             return;
  534.         }
  535.  
  536.         await pScript.then();
  537.  
  538.         await Promise.race([pElementQuery, delayPn(800)]);
  539.  
  540.         const targets = document.querySelectorAll('.code-container pre.lang-js, .code-container pre.lang-css');
  541.  
  542.         if (targets.length === 0) return;
  543.  
  544.         await delayPn(40);
  545.  
  546.         document.head.appendChild(document.createElement('style')).textContent = doActionCSS();
  547.  
  548.         await delayPn(40);
  549.  
  550.         byPass = false;
  551.  
  552.         // Code highlighting
  553.         const promises = [...targets].map(prepareCodeAreaAsync)
  554.         await Promise.all(promises);
  555.  
  556.         await delayPn(40);
  557.         document.documentElement.setAttribute('dkkfv', '');
  558.         keydownActive = true;
  559.  
  560.     });
  561.  
  562.     function selectAllWithinElement(element) {
  563.         window.getSelection().removeAllRanges();
  564.         let range = document.createRange();
  565.         if (element) {
  566.             range.selectNodeContents(element);
  567.             window.getSelection().addRange(range);
  568.         } else {
  569.             console.error('Element not found with ID:', element);
  570.         }
  571.     }
  572.     document.addEventListener('keydown', (e) => {
  573.         if (keydownActive && e && e.code === 'KeyA' && e.isTrusted && (e.metaKey || e.ctrlKey) && !e.shiftKey && !e.altKey) {
  574.  
  575.             const target = e.target;
  576.             const container = target ? target.closest('div.code-container') : null;
  577.             const code = container ? container.querySelector('code') : null;
  578.  
  579.             if (container && code) {
  580.  
  581.                 e.preventDefault();
  582.                 e.stopPropagation();
  583.                 e.stopImmediatePropagation();
  584.  
  585.                 setTimeout(() => {
  586.                     selectAllWithinElement(code);
  587.                 }, 1)
  588.  
  589.             }
  590.  
  591.         }
  592.     }, true);
  593.  
  594.  
  595.     const cmLineNumberAppearFn = (evt) => {
  596.         const elm = evt.target;
  597.         if (!(elm instanceof HTMLElement)) return;
  598.  
  599.         elm.setAttribute('marker-text', elm.textContent.trim());
  600.         elm.textContent = '';
  601.     }
  602.  
  603.     document.addEventListener('animationstart', (evt) => {
  604.         const animationName = evt.animationName;
  605.         if (!animationName) return;
  606.         if (animationName === 'cmLineNumberAppear') cmLineNumberAppearFn(evt);
  607.     }, { capture: true, passive: true });
  608.  
  609.  
  610. })();