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

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;