Differential D4551 Diff 16165 swh/web/assets/config/webpack-plugins/dump-highlightjs-languages-data-plugin.js

Changeset View

Standalone View

				/**
				* Copyright (C) 2020 The Software Heritage developers
				* See the AUTHORS file at the top-level directory of this distribution
				* License: GNU Affero General Public License version 3, or any later version
				* See top-level LICENSE file for more information
				*/

				'use strict';

				const fs = require('fs');
				const path = require('path');
				const hljs = require('highlight.js');
				var stringify = require('json-stable-stringify');

				// Simple webpack plugin to dump JSON data related to the set of
				// programming languages supported by the highlightjs library.
				// The JSON file is saved into swh-web static folder and will
				// be consumed by the backend django application.

				class DumpHighlightjsLanguagesDataPlugin {

				apply(compiler) {
				compiler.hooks.done.tap('DumpHighlightjsLanguagesDataPlugin', statsObj => {
				const outputPath = statsObj.compilation.compiler.outputPath;
				const hljsDataFile = path.join(outputPath, 'json/highlightjs-languages.json');
				const languages = hljs.listLanguages();
				const hljsLanguagesData = {'languages': languages};
				const languageAliases = {};
				for (let language of languages) {
				const languageData = hljs.getLanguage(language);
				if (!languageData.hasOwnProperty('aliases')) {
				continue;
				}
				for (let alias of languageData.aliases) {
				languageAliases[alias] = language;
				languageAliases[alias.toLowerCase()] = language;
				}
				}
				hljsLanguagesData['languages_aliases'] = languageAliases;
				fs.writeFileSync(hljsDataFile, stringify(hljsLanguagesData, {space: 4}));
				});
				}

				};

				module.exports = DumpHighlightjsLanguagesDataPlugin;