#*****************************************************************************#
#* *#
#* Copyright (c) 2002, Peter Shannon *#
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#* Redistribution and use in source and binary forms, with or without *#
#* modification, are permitted provided that the following conditions *#
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#* * The name of the contributors may be used to endorse or promote *#
#* products derived from this software without specific prior *#
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#* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *#
#* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT *#
#* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS *#
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#*****************************************************************************#
import string, re, types, pprint
def decodeOid(val):
val = [int(val,16) for val in val.split(" ")][2:]
arc12 = val[0]
arc1, arc2 = divmod(arc12, 40)
oids = [arc1,arc2]
total = 0
for byte in val[1:]:
if byte & 0x80:
total = (total << 7) | (byte ^ 0x80)
else:
total = (total << 7) | byte
oids.append(total)
total = 0
return tuple(oids)
# for people out there who, like me, hate regexs(too easy to make mistakes
# with) I apologise profusely!
class Parser:
def __init__(self, filename):
self.file = filename
self.handle = open(self.file)
self.whiteMatch = re.compile(r'^\s*$')
self.hashMatch = re.compile(r'^#')
self.warningMatch = re.compile(r'^Warning')
self.oidMatch = re.compile(r'(?:^OID\s*=\s* )(.*)')
self.commentMatch = re.compile(r'(?:^Comment\s*=\s*)(.*)')
self.descriptionMatch = re.compile(r'(?:^Description\s*=\s*)(.*)')
self.oids = {}
self.objs = {}
self.__parse()
def __store(self, dict):
self.objs[dict['name']] = dict
self.oids[dict['oid' ]] = dict
def __parse(self):
dict = None
broken = False
for line in self.handle:
m = self.oidMatch.match(line)
if m:
if dict and not broken:
self.__store(dict)
dict = { 'hexoid' : m.group(1),
'oid' : decodeOid(m.group(1)) }
broken = False
continue
if self.warningMatch.match(line):
broken = True
continue
if self.whiteMatch.match(line) or self.hashMatch.match(line):
continue
m = self.commentMatch.match(line)
if m:
dict['comment'] = m.group(1)
continue
m = self.descriptionMatch.match(line)
if m:
dict['description'] = m.group(1)
dict['name'] = m.group(1).strip().split(' ')[0]
continue
raise Exception, 'unhandled pattern'
if dict and not broken:
self.__store(dict)
def dumpobjs(self, path):
file = open(path, 'w')
file.write('data = ')
pprint.pprint( self.objs, file )
file.close()
def dumpoids(self, path):
file = open(path, 'w')
file.write('data = ')
pprint.pprint( self.oids, file )
file.close()
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