diff --git a/zipdir.py b/zipdir.py
index e5d596e7..e51b34ff 100644
--- a/zipdir.py
+++ b/zipdir.py
@@ -1,6 +1,8 @@
 import os
 import zipfile
 
+import StringIO
+
 def toZip(filename, directory):
 	zippedHelp = zipfile.ZipFile(filename, "w", compression=zipfile.ZIP_DEFLATED)
 	lst = os.listdir(directory)
@@ -34,6 +36,27 @@ def addFolderToZip(zippedHelp,folder,fpath):
 		elif os.path.isdir(f):
 			addFolderToZip(zippedHelp,f)
 
+def inMemoryZip(files):
+	# files have a structure of {'path/to/file' => content} dictionary
+	io = StringIO.StringIO()
+	memzip = zipfile.ZipFile(io, 'a', compression=zipfile.ZIP_DEFLATED)
+	memzip.debug = 3
+	
+	for path in files:
+		memzip.writestr(path, files[path])
+	
+	for zf in memzip.filelist:
+		zf.create_system = 0
+	
+	memzip.close()
+	
+	return io.getvalue()
+
 if __name__ == '__main__':
-	toZip('sample.epub', "books/A_Time_To_Reflect")
-	z = zipfile.ZipFile('sample.epub', 'r')
\ No newline at end of file
+#	toZip('sample.epub', "books/A_Time_To_Reflect")
+#	z = zipfile.ZipFile('sample.epub', 'r')
+	files = {'test.txt' : 'test', 'data/abc.txt' : 'abc'}
+	data = inMemoryZip(files)
+	f = open('res.zip', 'w')
+	f.write(data)
+	f.close()
\ No newline at end of file