feat: Initial clean release of CHM

packages/lib/markupLanguageUtils.ts

@@ -0,0 +1,64 @@
+import markdownUtils from './markdownUtils';
+import Setting from './models/Setting';
+import shim from './shim';
+import MarkupToHtml, { Options } from '@joplin/renderer/MarkupToHtml';
+
+import htmlUtils from './htmlUtils';
+import Resource from './models/Resource';
+import { PluginStates } from './services/plugins/reducer';
+import { MarkupLanguage } from '@joplin/renderer';
+
+export class MarkupLanguageUtils {
+
+	private lib_(language: MarkupLanguage) {
+		if (language === MarkupLanguage.Html) return htmlUtils;
+		if (language === MarkupLanguage.Markdown) return markdownUtils;
+		throw new Error(`Unsupported markup language: ${language}`);
+	}
+
+	public extractImageUrls(language: MarkupLanguage, text: string): string[] {
+		let urls: string[] = [];
+
+		if (language === MarkupLanguage.Any) {
+			urls = urls.concat(this.lib_(MarkupLanguage.Markdown).extractImageUrls(text));
+			urls = urls.concat(this.lib_(MarkupLanguage.Html).extractImageUrls(text));
+		} else {
+			urls = this.lib_(language).extractImageUrls(text);
+		}
+
+		return urls;
+	}
+
+	public extractPdfUrls(language: MarkupLanguage, text: string): string[] {
+		let urls: string[] = [];
+		if (language === MarkupLanguage.Any) {
+			urls = urls.concat(this.lib_(MarkupLanguage.Markdown).extractPdfUrls(text));
+			urls = urls.concat(this.lib_(MarkupLanguage.Html).extractPdfUrls(text));
+		} else {
+			urls = this.lib_(language).extractPdfUrls(text);
+		}
+		return urls;
+	}
+
+	// Create a new MarkupToHtml instance while injecting options specific to Joplin
+	// desktop and mobile applications.
+	public newMarkupToHtml(_plugins: PluginStates = null, options: Options = null) {
+		const subValues = Setting.subValues('markdown.plugin', Setting.toPlainObject());
+		const pluginOptions: Record<string, { enabled: boolean }> = {};
+		for (const n in subValues) {
+			pluginOptions[n] = { enabled: !!subValues[n] };
+		}
+
+		options = { ResourceModel: Resource,
+			pluginOptions: pluginOptions,
+			tempDir: Setting.value('tempDir'),
+			fsDriver: shim.fsDriver(),
+			isSafeMode: Setting.value('isSafeMode'), ...options };
+
+		return new MarkupToHtml(options);
+	}
+}
+
+const markupLanguageUtils = new MarkupLanguageUtils();
+
+export default markupLanguageUtils;