All: Resolves #734: Allow exporting to a hierarchy of Markdown files, and fixed a few issues related to exporting notebooks

ElectronClient/app/InteropServiceHelper.js

@@ -11,7 +11,7 @@ class InteropServiceHelper {
 
 		if (module.target === 'file') {
 			path = bridge().showSaveDialog({
-				filters: [{ name: module.description, extensions: module.fileExtension}]
+				filters: [{ name: module.description, extensions: module.fileExtensions}]
 			});
 		} else {
 			path = bridge().showOpenDialog({

ElectronClient/app/gui/SideBar.jsx

@@ -238,14 +238,22 @@ class SideBarComponent extends React.Component {
 
 			const InteropService = require("lib/services/InteropService.js");
 
+			const exportMenu = new Menu();
+			const ioService = new InteropService();
+			const ioModules = ioService.modules();
+			for (let i = 0; i < ioModules.length; i++) {
+				const module = ioModules[i];
+				if (module.type !== 'exporter') continue;
+
+				exportMenu.append(new MenuItem({ label: module.fullLabel() , click: async () => {
+					await InteropServiceHelper.export(this.props.dispatch.bind(this), module, { sourceFolderIds: [itemId] });
+				}}));
+			}
+
 			menu.append(
 				new MenuItem({
 					label: _("Export"),
-					click: async () => {
+					submenu: exportMenu,
-						const ioService = new InteropService();
-						const module = ioService.moduleByFormat_("exporter", "jex");
-						await InteropServiceHelper.export(this.props.dispatch.bind(this), module, { sourceFolderIds: [itemId] });
-					},
 				})
 			);
 		}

ReactNativeClient/lib/path-utils.js

@@ -40,9 +40,11 @@ function safeFileExtension(e) {
 	return e.replace(/[^a-zA-Z0-9]/g, '')
 }
 
-function safeFilename(e, maxLength = 32) {
+function safeFilename(e, maxLength = null, allowSpaces = false) {
+	if (maxLength === null) maxLength = 32;
 	if (!e || !e.replace) return '';
-	let output = e.replace(/[^a-zA-Z0-9\-_\(\)\.]/g, '_')
+	const regex = allowSpaces ? /[^a-zA-Z0-9\-_\(\)\. ]/g : /[^a-zA-Z0-9\-_\(\)\.]/g
+	let output = e.replace(regex, '_')
 	return output.substr(0, maxLength);
 }
 

ReactNativeClient/lib/services/InteropService.js

@@ -58,6 +58,10 @@ class InteropService {
 				format: 'raw',
 				target: 'directory',
 				description: _('Joplin Export Directory'),
+			}, {
+				format: 'md',
+				target: 'directory',
+				description: _('Markdown'),
 			},
 		];
 

ReactNativeClient/lib/services/InteropService_Exporter_Md.js

@@ -0,0 +1,58 @@
+const InteropService_Exporter_Base = require('lib/services/InteropService_Exporter_Base');
+const { basename, filename, safeFilename } = require('lib/path-utils.js');
+const BaseModel = require('lib/BaseModel');
+const Folder = require('lib/models/Folder');
+const Note = require('lib/models/Note');
+const { shim } = require('lib/shim');
+
+class InteropService_Exporter_Md extends InteropService_Exporter_Base {
+
+	async init(destDir) {
+		this.destDir_ = destDir;
+		this.resourceDir_ = destDir ? destDir + '/_resources' : null;
+		this.createdDirs_ = [];
+
+		await shim.fsDriver().mkdir(this.destDir_);
+		await shim.fsDriver().mkdir(this.resourceDir_);
+	}
+
+	async makeDirPath_(item) {
+		let output = '';
+		while (true) {
+			if (item.type_ === BaseModel.TYPE_FOLDER) {
+				output = safeFilename(item.title, null, true) + '/' + output;
+			}
+			if (!item.parent_id) return output;
+			item = await Folder.load(item.parent_id);
+		}
+		return output;
+	}
+
+	async processItem(ItemClass, item) {
+		if ([BaseModel.TYPE_NOTE, BaseModel.TYPE_FOLDER].indexOf(item.type_) < 0) return;
+
+		const filename = safeFilename(item.title, null, true);
+		const dirPath = this.destDir_ + '/' + (await this.makeDirPath_(item));
+
+		if (this.createdDirs_.indexOf(dirPath) < 0) {
+			await shim.fsDriver().mkdir(dirPath);
+			this.createdDirs_.push(dirPath);
+		}
+
+		if (item.type_ === BaseModel.TYPE_NOTE) {
+			const noteFilePath = dirPath + '/' + safeFilename(item.title, null, true) + '.md';
+			const noteContent = await Note.serializeForEdit(item);
+			await shim.fsDriver().writeFile(noteFilePath, noteContent, 'utf-8');
+		}
+	}
+
+	async processResource(resource, filePath) {
+		const destResourcePath = this.resourceDir_ + '/' + basename(filePath);
+		await shim.fsDriver().copy(filePath, destResourcePath);
+	}
+
+	async close() {}
+
+}
+
+module.exports = InteropService_Exporter_Md;