# -*- coding: utf-8 -*-
"""The Apple Partition Map (APM) volume system."""
from dfvfs.lib import definitions
from dfvfs.volume import factory
from dfvfs.volume import volume_system
[docs]
class APMVolume(volume_system.Volume):
"""Volume that uses pyvsapm."""
[docs]
def __init__(self, file_entry):
"""Initializes a APM volume.
Args:
file_entry (APMFileEntry): a APM file entry.
"""
super(APMVolume, self).__init__(file_entry.name)
self._file_entry = file_entry
def _Parse(self):
"""Extracts attributes and extents from the volume."""
vsapm_partition = self._file_entry.GetAPMPartition()
volume_attribute = volume_system.VolumeAttribute(
'name', vsapm_partition.name_string)
self._AddAttribute(volume_attribute)
volume_extent = volume_system.VolumeExtent(
vsapm_partition.volume_offset, vsapm_partition.size)
self._extents.append(volume_extent)
[docs]
class APMVolumeSystem(volume_system.VolumeSystem):
"""Volume system that uses pyvsapm."""
TYPE_INDICATOR = definitions.TYPE_INDICATOR_APM
VOLUME_IDENTIFIER_PREFIX = 'p'
def _Parse(self):
"""Extracts sections and volumes from the volume system."""
root_file_entry = self._file_system.GetRootFileEntry()
for sub_file_entry in root_file_entry.sub_file_entries:
volume = APMVolume(sub_file_entry)
self._AddVolume(volume)
factory.Factory.RegisterVolumeSystem(APMVolumeSystem)