| #!/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 |