Adding EPL version of configurationengine.
#
# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
# All rights reserved.
# This component and the accompanying materials are made available
# under the terms of "Eclipse Public License v1.0"
# which accompanies this distribution, and is available
# at the URL "http://www.eclipse.org/legal/epl-v10.html".
#
# Initial Contributors:
# Nokia Corporation - initial contribution.
#
# Contributors:
#
# Description:
#
from struct import pack, unpack
from hcrplugin.hcr_exceptions import InvalidHcrHeaderError
class HcrHeader(object):
"""
"""
HEADER_FMT = '<4sHHIII12x'
HEADER_SIGNATURE = 'HCRf'
def __init__(self):
self.version = 0
self.flags = 0
self.nrecords = 0
self.lsd_offset = 0
self.lsd_size = 0
def loads(self, headerstr):
if len(headerstr) != 32:
raise InvalidHcrHeaderError('Invalid length of header data %r' % headerstr)
result = unpack(self.HEADER_FMT, headerstr)
if not result[0] == self.HEADER_SIGNATURE:
raise InvalidHcrHeaderError('Invalid HCR signature in %r' % headerstr)
self.version = result[1]
self.flags = result[2]
self.nrecords = result[3]
self.lsd_offset = result[4]
self.lsd_size = result[5]
def dumps(self):
return pack(self.HEADER_FMT, self.HEADER_SIGNATURE, self.version,
self.flags,
self.nrecords,
self.lsd_offset,
self.lsd_size)