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TiddlyWiki5/plugins/tiddlywiki/highlight/highlightblock.js
Talha Mansoor 04a4a0f92e Add support of language aliases in highlight.js plugin (#3898)
listLanguages() returns a list of supported languages. It does not
return language aliases.

highlight.js has extensive support of language aliases which can be 
viewed here

https://highlightjs.readthedocs.io/en/latest/css-classes-reference.html#language-names-and-aliases

But because of using listLanguages(), TW does not take advantage of 
alias.

getLanguage() method on the other hand supports aliases.

https://highlightjs.readthedocs.io/en/latest/api.html#getlanguage-name

To summarize, now user can use javascript, js or jsx for the code block. getLanguage() will return an object which means highlight.js supports
this language.
2019-04-15 18:45:45 +01:00

46 lines
1.3 KiB
JavaScript

/*\
title: $:/plugins/tiddlywiki/highlight/highlightblock.js
type: application/javascript
module-type: widget
Wraps up the fenced code blocks parser for highlight and use in TiddlyWiki5
\*/
(function() {
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
var TYPE_MAPPINGS_BASE = "$:/config/HighlightPlugin/TypeMappings/";
var CodeBlockWidget = require("$:/core/modules/widgets/codeblock.js").codeblock;
var hljs = require("$:/plugins/tiddlywiki/highlight/highlight.js");
hljs.configure({tabReplace: " "});
CodeBlockWidget.prototype.postRender = function() {
var domNode = this.domNodes[0],
language = this.language,
tiddler = this.wiki.getTiddler(TYPE_MAPPINGS_BASE + language);
if(tiddler) {
language = tiddler.fields.text || "";
}
if(language && hljs.getLanguage(language)) {
domNode.className = language.toLowerCase() + " hljs";
if($tw.browser && !domNode.isTiddlyWikiFakeDom) {
hljs.highlightBlock(domNode);
} else {
var text = domNode.textContent;
domNode.children[0].innerHTML = hljs.fixMarkup(hljs.highlight(language,text).value);
// If we're using the fakedom then specially save the original raw text
if(domNode.isTiddlyWikiFakeDom) {
domNode.children[0].textInnerHTML = text;
}
}
}
};
})();