initial

s_basic/util/io.py

@@ -0,0 +1,18 @@
+"""
+This module provides utility functions and classed for I/O.
+"""
+
+
+class CharacterDevice(object):
+	def __init__(self, file_):
+		self._file = file_
+
+	def getc(self):
+		return self._file.read(1)
+	def ungetc(self, c):
+		self._file.seek(-1, 1)
+	def ungets(self, s):
+		self._file.seel(-len(s), 1)
+	def close(self):
+		return self._file.close()
+