# -*- coding: utf-8 -*-
"""The Logical Volume Manager (LVM) path specification implementation."""
from dfvfs.lib import definitions
from dfvfs.path import factory
from dfvfs.path import path_spec
[docs]
class LVMPathSpec(path_spec.PathSpec):
"""LVM path specification.
Attributes:
location (str): location.
volume_index (int): logical volume index.
"""
TYPE_INDICATOR = definitions.TYPE_INDICATOR_LVM
[docs]
def __init__(self, location=None, parent=None, volume_index=None, **kwargs):
"""Initializes a path specification.
Note that the LVM path specification must have a parent.
Args:
location (Optional[str]): location.
parent (Optional[PathSpec]): parent path specification.
volume_index (Optional[int]): logical volume index.
Raises:
ValueError: when parent is not set.
"""
if not parent:
raise ValueError('Missing parent value.')
super(LVMPathSpec, self).__init__(parent=parent, **kwargs)
self.location = location
self.volume_index = volume_index
@property
def comparable(self):
"""str: comparable representation of the path specification."""
string_parts = []
if self.location is not None:
string_parts.append(f'location: {self.location:s}')
if self.volume_index is not None:
string_parts.append(f'volume index: {self.volume_index:d}')
return self._GetComparable(sub_comparable_string=', '.join(string_parts))
factory.Factory.RegisterPathSpec(LVMPathSpec)