First draft of a command to read tiddlers, bags and recipes from an archive

The archive format is a legacy format that I used with Xememex, and will need to be updated to iron out the wrinkles

plugins/tiddlywiki/multiwikiserver/modules/command-mws-load.js

@@ -0,0 +1,67 @@
+/*\
+title: $:/plugins/tiddlywiki/multiwikiserver/mws-load.js
+type: application/javascript
+module-type: command
+
+Command to load tiddlers from a file or directory
+
+\*/
+(function(){
+
+/*jslint node: true, browser: true */
+/*global $tw: false */
+"use strict";
+
+exports.info = {
+	name: "mws-load",
+	synchronous: true
+};
+
+var Command = function(params,commander,callback) {
+	this.params = params;
+	this.commander = commander;
+	this.callback = callback;
+};
+
+Command.prototype.execute = function() {
+	var self = this;
+	// Check parameters
+	if(this.params.length < 1) {
+		return "Missing filename";
+	}
+	var archivePath = this.params[0];
+	loadBackupArchive(archivePath);
+	return null;
+};
+
+function loadBackupArchive(archivePath) {
+	const fs = require("fs"),
+	path = require("path");
+	// Iterate the bags
+	const bagNames = fs.readdirSync(path.resolve(archivePath,"bags")).filter(filename => filename !== ".DS_Store");
+	for(const bagName of bagNames) {
+		console.log(`Reading bag ${bagName}`);
+		$tw.sqlTiddlerStore.createBag(decodeURIComponent(bagName),"No description for " + bagName);
+		// Read the metadata
+		const jsonInfo = JSON.parse(fs.readFileSync(path.resolve(archivePath,"bags",bagName,"meta/info.json"),"utf8"));
+		if(fs.existsSync(path.resolve(archivePath,"bags",bagName,"tiddlers"))) {
+			// Read each tiddler
+			const tiddlerFilenames = fs.readdirSync(path.resolve(archivePath,"bags",bagName,"tiddlers")).filter(filename => filename !== ".DS_Store");
+			for(const tiddlerFilename of tiddlerFilenames) {
+				const jsonTiddler = fs.readFileSync(path.resolve(archivePath,"bags",bagName,"tiddlers",tiddlerFilename),"utf8"),
+					tiddler = JSON.parse(jsonTiddler);
+				$tw.sqlTiddlerStore.saveBagTiddler(tiddler,decodeURIComponent(bagName));
+			}	
+		}
+	}
+	// Iterate the recipes
+	const recipeNames = fs.readdirSync(path.resolve(archivePath,"recipes")).filter(filename => filename !== ".DS_Store");
+	for(const recipeName of recipeNames) {
+		const jsonInfo = JSON.parse(fs.readFileSync(path.resolve(archivePath,"recipes",recipeName,"info.json"),"utf8"));
+		$tw.sqlTiddlerStore.createRecipe(decodeURIComponent(recipeName),jsonInfo.recipe.map(recipeLine => recipeLine[0]),"No description for " + recipeName);
+	}
+}
+
+exports.Command = Command;
+
+})();