added loading from zipped epub file

fpjs/render/unarchiver.js

@@ -0,0 +1,77 @@
+FP.Unarchiver = function(url, callback){
+	this.libPath = "fpjs/libs/";
+	this.zipUrl = url;
+	this.callback = callback;
+	this.loadLib(function(){
+		this.getZip(this.zipUrl);
+	}.bind(this));
+}
+
+FP.Unarchiver.prototype.loadLib = function(callback){
+	if(typeof(zip) != "undefined") callback();
+	//-- load script
+	FP.core.loadScript(this.libPath+"zip.js", function(){
+		//-- Tell zip where it is located
+		zip.workerScriptsPath = this.libPath;
+		callback();
+	}.bind(this));
+}
+
+FP.Unarchiver.prototype.getZip = function(zipUrl){ 
+	var xhr = new FP.core.loadFile(zipUrl);
+	
+	xhr.succeeded = function(file) {
+		this.getEntries(file, this.toStorage.bind(this));
+	}.bind(this);
+	
+	xhr.failed = this.failed;
+	
+	xhr.start();
+	
+}
+
+FP.Unarchiver.prototype.getEntries = function(file, callback){
+	zip.createReader(new zip.BlobReader(file), function(zipReader) {
+		zipReader.getEntries(callback);
+	}, this.failed);
+}
+
+FP.Unarchiver.prototype.failed = function(error){ 
+	console.log("Error:", error);
+}
+
+FP.Unarchiver.prototype.afterSaved = function(error){ 
+	this.callback();
+}
+
+FP.Unarchiver.prototype.toStorage = function(entries){
+	var timeout = 0,
+		delay = 20,
+		that = this,
+		count = entries.length;
+
+	function callback(){
+		count--;
+		if(count == 0) that.afterSaved();
+	}
+		
+	entries.forEach(function(entry){
+		
+		setTimeout(function(entry){
+			that.saveEntryFileToStorage(entry, callback);
+		}, timeout, entry);
+		
+		timeout += delay;
+	});
+	
+	console.log("time", timeout);
+	
+	//entries.forEach(this.saveEntryFileToStorage.bind(this));
+}
+
+FP.Unarchiver.prototype.saveEntryFileToStorage = function(entry, callback){
+	var that = this;
+	entry.getData(new zip.BlobWriter(), function(blob) {
+		FP.storage.save(entry.filename, blob, callback);
+	});
+}