62 lines
1.8 KiB
JavaScript
62 lines
1.8 KiB
JavaScript
(function () {
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if (typeof Prism === 'undefined' || typeof document === 'undefined') {
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return;
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}
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// https://developer.mozilla.org/en-US/docs/Web/API/Element/matches#Polyfill
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if (!Element.prototype.matches) {
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Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
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}
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Prism.plugins.UnescapedMarkup = true;
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Prism.hooks.add('before-highlightall', function (env) {
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env.selector += ', [class*="lang-"] script[type="text/plain"]'
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+ ', [class*="language-"] script[type="text/plain"]'
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+ ', script[type="text/plain"][class*="lang-"]'
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+ ', script[type="text/plain"][class*="language-"]';
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});
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Prism.hooks.add('before-sanity-check', function (env) {
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/** @type {HTMLElement} */
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var element = env.element;
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if (element.matches('script[type="text/plain"]')) {
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// found a <script type="text/plain" ...> element
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// we convert this element to a regular <pre><code> code block
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var code = document.createElement('code');
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var pre = document.createElement('pre');
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// copy class name
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pre.className = code.className = element.className;
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// copy all "data-" attributes
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var dataset = element.dataset;
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Object.keys(dataset || {}).forEach(function (key) {
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if (Object.prototype.hasOwnProperty.call(dataset, key)) {
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pre.dataset[key] = dataset[key];
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}
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});
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code.textContent = env.code = env.code.replace(/<\/script(?:>|>)/gi, '</scri' + 'pt>');
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// change DOM
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pre.appendChild(code);
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element.parentNode.replaceChild(pre, element);
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env.element = code;
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return;
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}
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if (!env.code) {
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// no code
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var childNodes = element.childNodes;
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if (childNodes.length === 1 && childNodes[0].nodeName == '#comment') {
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// the only child is a comment -> use the comment's text
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element.textContent = env.code = childNodes[0].textContent;
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}
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}
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});
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}());
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