Initial commit of the Toorcamp SIM tool

pySim/utils.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+""" pySim: various utilities
+"""
+
+#
+# Copyright (C) 2009-2010  Sylvain Munaut <tnt@246tNt.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+
+def h2b(s):
+	return ''.join([chr((int(x,16)<<4)+int(y,16)) for x,y in zip(s[0::2], s[1::2])])
+
+def b2h(s):
+	return ''.join(['%02x'%ord(x) for x in s])
+
+def h2i(s):
+	return [(int(x,16)<<4)+int(y,16) for x,y in zip(s[0::2], s[1::2])]
+
+def i2h(s):
+	return ''.join(['%02x'%(x) for x in s])
+
+def swap_nibbles(s):
+	return ''.join([x+y for x,y in zip(s[1::2], s[0::2])])
+
+def rpad(s, l, c='f'):
+	return s + c * (l - len(s))
+
+def lpad(s, l, c='f'):
+	return c * (l - len(s)) + s