64 lines
1.8 KiB
JavaScript
64 lines
1.8 KiB
JavaScript
import { lowlight } from 'lowlight/lib/core';
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import { __, sprintf } from '~/locale';
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import CODE_BLOCK_LANGUAGES from '../constants/code_block_languages';
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import languageLoader from './highlight_js_language_loader';
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const codeBlockLanguageLoader = {
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lowlight,
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allLanguages: CODE_BLOCK_LANGUAGES,
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findOrCreateLanguageBySyntax(value, isDiagram) {
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const lowercaseValue = value?.toLowerCase() || 'plaintext';
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return (
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this.allLanguages.find(
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({ syntax, variants }) =>
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syntax === lowercaseValue || variants?.toLowerCase().split(', ').includes(lowercaseValue),
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) || {
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syntax: lowercaseValue,
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label: sprintf(isDiagram ? __(`Diagram (%{language})`) : __(`Custom (%{language})`), {
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language: lowercaseValue,
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}),
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}
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);
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},
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filterLanguages(value) {
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if (!value) return this.allLanguages;
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const lowercaseValue = value?.toLowerCase() || '';
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return this.allLanguages.filter(
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({ syntax, label, variants }) =>
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syntax.toLowerCase().includes(lowercaseValue) ||
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label.toLowerCase().includes(lowercaseValue) ||
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variants?.toLowerCase().includes(lowercaseValue),
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);
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},
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isLanguageLoaded(language) {
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return this.lowlight.registered(language);
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},
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loadLanguageFromInputRule(match) {
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const { syntax } = this.findOrCreateLanguageBySyntax(match[1]);
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this.loadLanguage(syntax);
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return { language: syntax };
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},
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async loadLanguage(languageName) {
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if (this.isLanguageLoaded(languageName)) return false;
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try {
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const { default: language } = await languageLoader[languageName]();
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this.lowlight.registerLanguage(languageName, language);
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return true;
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} catch {
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return false;
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}
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},
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};
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export default codeBlockLanguageLoader;
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