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#!/usr/bin/python
# Simple udev rules syntax checker
#
# (C) 2010 Canonical Ltd.
# Author: Martin Pitt <martin.pitt@ubuntu.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, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
import re
import sys
if len(sys.argv) < 2:
print >> sys.stderr, 'Usage: %s <rules file> [...]' % sys.argv[0]
sys.exit(2)
no_args_tests = re.compile('(ACTION|DEVPATH|KERNELS?|NAME|SYMLINK|SUBSYSTEMS?|DRIVERS?|TAG|RESULT|TEST)\s*(?:=|!)=\s*"([^"]*)"$')
args_tests = re.compile('(ATTRS?|ENV|TEST){([a-zA-Z0-9/_.*%-]+)}\s*(?:=|!)=\s*"([^"]*)"$')
no_args_assign = re.compile('(NAME|SYMLINK|SYMLINK{unique}|OWNER|GROUP|MODE|TAG|PROGRAM|RUN|RUN{ignore_error}|LABEL|GOTO|WAIT_FOR|OPTIONS|IMPORT)\s*(?:\+=|:=|=)\s*"([^"]*)"$')
args_assign = re.compile('(ATTR|ENV|IMPORT){([a-zA-Z0-9/_.*%-]+)}\s*=\s*"([^"]*)"$')
result = 0
buffer = ''
for path in sys.argv[1:]:
lineno = 0
for line in open(path):
lineno += 1
# handle line continuation
if line.endswith('\\\n'):
buffer += line[:-2]
continue
else:
line = buffer + line
buffer = ''
# filter out comments and empty lines
line = line.strip()
if not line or line.startswith('#'):
continue
for clause in line.split(','):
clause = clause.strip()
if not (no_args_tests.match(clause) or args_tests.match(clause) or
no_args_assign.match(clause) or args_assign.match(clause)):
print 'Invalid line %s:%i: %s' % (path, lineno, line)
print ' clause:', clause
print
result = 1
break
sys.exit(result)
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