# Python script to search the udev file system for devices # Copyright (C) 2005 Tim Blechmann # # 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; see the file COPYING. If not, write to # the Free Software Foundation, Inc., 59 Temple Place - Suite 330, # Boston, MA 02111-1307, USA. # # $Id: find_hid.py,v 1.2 2005-12-09 12:50:06 timblech Exp $ # from os import popen, listdir def parse_device(event, rules): pipe = popen('udevinfo -a -p /sys/class/input/%s' % event) line = pipe.readline() while line: line.strip() if '==' in line: setting, value = line.split('==') setting = setting.strip() if '{' in setting: setting = setting.split('{')[1].split('}')[0] value = value.strip().strip('"') if setting in rules: if rules [setting] == value: # we matched one rule, so we remove it from the pending rules del rules[setting] line = pipe.readline() if len(rules) == 0: pipe.close() print event return float(event.strip("event")) pipe.close() return -1 def find (*args): name = "" for token in args: name+=" " + str(token) name = name.strip() rules = name.split('" "') rules = map (lambda x: x.strip('"'), rules) ruledict = dict() for rule in rules: setting, value = rule.split('=',1) ruledict[setting] = value rules = ruledict events = filter(lambda x: "event" in x, listdir('/sys/class/input/')) for event in events: ret = parse_device(event, dict(rules)) if ret != -1: return int(ret) return -1