BookStack/resources/assets/js/services/code.js

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import CodeMirror from "codemirror";
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import Clipboard from "clipboard/dist/clipboard.min";
// Modes
import 'codemirror/mode/css/css';
import 'codemirror/mode/clike/clike';
import 'codemirror/mode/diff/diff';
import 'codemirror/mode/go/go';
import 'codemirror/mode/htmlmixed/htmlmixed';
import 'codemirror/mode/javascript/javascript';
import 'codemirror/mode/julia/julia';
import 'codemirror/mode/lua/lua';
import 'codemirror/mode/haskell/haskell';
import 'codemirror/mode/markdown/markdown';
import 'codemirror/mode/mllike/mllike';
import 'codemirror/mode/nginx/nginx';
import 'codemirror/mode/php/php';
import 'codemirror/mode/powershell/powershell';
import 'codemirror/mode/python/python';
import 'codemirror/mode/ruby/ruby';
import 'codemirror/mode/rust/rust';
import 'codemirror/mode/shell/shell';
import 'codemirror/mode/sql/sql';
import 'codemirror/mode/toml/toml';
import 'codemirror/mode/xml/xml';
import 'codemirror/mode/yaml/yaml';
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// Addons
import 'codemirror/addon/scroll/scrollpastend';
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const modeMap = {
css: 'css',
c: 'text/x-csrc',
java: 'text/x-java',
scala: 'text/x-scala',
kotlin: 'text/x-kotlin',
'c++': 'text/x-c++src',
'c#': 'text/x-csharp',
csharp: 'text/x-csharp',
diff: 'diff',
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go: 'go',
haskell: 'haskell',
hs: 'haskell',
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html: 'htmlmixed',
javascript: 'javascript',
json: {name: 'javascript', json: true},
js: 'javascript',
jl: 'julia',
julia: 'julia',
lua: 'lua',
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md: 'markdown',
mdown: 'markdown',
markdown: 'markdown',
ml: 'mllike',
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nginx: 'nginx',
powershell: 'powershell',
ocaml: 'mllike',
php: 'php',
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py: 'python',
python: 'python',
ruby: 'ruby',
rust: 'rust',
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rb: 'ruby',
rs: 'rust',
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shell: 'shell',
sh: 'shell',
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bash: 'shell',
toml: 'toml',
sql: 'text/x-sql',
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xml: 'xml',
yaml: 'yaml',
yml: 'yaml',
};
/**
* Highlight pre elements on a page
*/
function highlight() {
let codeBlocks = document.querySelectorAll('.page-content pre, .comment-box .content pre');
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for (let i = 0; i < codeBlocks.length; i++) {
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highlightElem(codeBlocks[i]);
}
}
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/**
* Add code highlighting to a single element.
* @param {HTMLElement} elem
*/
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function highlightElem(elem) {
let innerCodeElem = elem.querySelector('code[class^=language-]');
let mode = '';
if (innerCodeElem !== null) {
let langName = innerCodeElem.className.replace('language-', '');
mode = getMode(langName);
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}
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elem.innerHTML = elem.innerHTML.replace(/<br\s*[\/]?>/gi ,'\n');
let content = elem.textContent.trim();
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let cm = CodeMirror(function(elt) {
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elem.parentNode.replaceChild(elt, elem);
}, {
value: content,
mode: mode,
lineNumbers: true,
theme: getTheme(),
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readOnly: true
});
addCopyIcon(cm);
}
/**
* Add a button to a CodeMirror instance which copies the contents to the clipboard upon click.
* @param cmInstance
*/
function addCopyIcon(cmInstance) {
const copyIcon = `<svg viewBox="0 0 24 24" width="16" height="16" xmlns="http://www.w3.org/2000/svg"><path d="M0 0h24v24H0z" fill="none"/><path d="M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z"/></svg>`;
const copyButton = document.createElement('div');
copyButton.classList.add('CodeMirror-copy');
copyButton.innerHTML = copyIcon;
cmInstance.display.wrapper.appendChild(copyButton);
const clipboard = new Clipboard(copyButton, {
text: function(trigger) {
return cmInstance.getValue()
}
});
clipboard.on('success', event => {
copyButton.classList.add('success');
setTimeout(() => {
copyButton.classList.remove('success');
}, 240);
});
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}
/**
* Search for a codemirror code based off a user suggestion
* @param suggestion
* @returns {string}
*/
function getMode(suggestion) {
suggestion = suggestion.trim().replace(/^\./g, '').toLowerCase();
return (typeof modeMap[suggestion] !== 'undefined') ? modeMap[suggestion] : '';
}
/**
* Ge the theme to use for CodeMirror instances.
* @returns {*|string}
*/
function getTheme() {
return window.codeTheme || 'base16-light';
}
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/**
* Create a CodeMirror instance for showing inside the WYSIWYG editor.
* Manages a textarea element to hold code content.
* @param {HTMLElement} elem
* @returns {{wrap: Element, editor: *}}
*/
function wysiwygView(elem) {
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let doc = elem.ownerDocument;
let codeElem = elem.querySelector('code');
let lang = (elem.className || '').replace('language-', '');
if (lang === '' && codeElem) {
lang = (codeElem.className || '').replace('language-', '')
}
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elem.innerHTML = elem.innerHTML.replace(/<br\s*[\/]?>/gi ,'\n');
let content = elem.textContent;
let newWrap = doc.createElement('div');
let newTextArea = doc.createElement('textarea');
newWrap.className = 'CodeMirrorContainer';
newWrap.setAttribute('data-lang', lang);
newWrap.setAttribute('dir', 'ltr');
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newTextArea.style.display = 'none';
elem.parentNode.replaceChild(newWrap, elem);
newWrap.appendChild(newTextArea);
newWrap.contentEditable = false;
newTextArea.textContent = content;
let cm = CodeMirror(function(elt) {
newWrap.appendChild(elt);
}, {
value: content,
mode: getMode(lang),
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lineNumbers: true,
theme: getTheme(),
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readOnly: true
});
setTimeout(() => {
cm.refresh();
}, 300);
return {wrap: newWrap, editor: cm};
}
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/**
* Create a CodeMirror instance to show in the WYSIWYG pop-up editor
* @param {HTMLElement} elem
* @param {String} modeSuggestion
* @returns {*}
*/
function popupEditor(elem, modeSuggestion) {
let content = elem.textContent;
return CodeMirror(function(elt) {
elem.parentNode.insertBefore(elt, elem);
elem.style.display = 'none';
}, {
value: content,
mode: getMode(modeSuggestion),
lineNumbers: true,
theme: getTheme(),
lineWrapping: true
});
}
/**
* Set the mode of a codemirror instance.
* @param cmInstance
* @param modeSuggestion
*/
function setMode(cmInstance, modeSuggestion) {
cmInstance.setOption('mode', getMode(modeSuggestion));
}
/**
* Set the content of a cm instance.
* @param cmInstance
* @param codeContent
*/
function setContent(cmInstance, codeContent) {
cmInstance.setValue(codeContent);
setTimeout(() => {
cmInstance.refresh();
}, 10);
}
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/**
* Get a CodeMirror instace to use for the markdown editor.
* @param {HTMLElement} elem
* @returns {*}
*/
function markdownEditor(elem) {
let content = elem.textContent;
return CodeMirror(function (elt) {
elem.parentNode.insertBefore(elt, elem);
elem.style.display = 'none';
}, {
value: content,
mode: "markdown",
lineNumbers: true,
theme: getTheme(),
lineWrapping: true,
scrollPastEnd: true,
});
}
/**
* Get the 'meta' key dependant on the user's system.
* @returns {string}
*/
function getMetaKey() {
let mac = CodeMirror.keyMap["default"] == CodeMirror.keyMap.macDefault;
return mac ? "Cmd" : "Ctrl";
}
export default {
highlight: highlight,
wysiwygView: wysiwygView,
popupEditor: popupEditor,
setMode: setMode,
setContent: setContent,
markdownEditor: markdownEditor,
getMetaKey: getMetaKey,
};