Source code for dfvfs.vfs.bde_file_entry

# -*- coding: utf-8 -*-
"""The BDE file entry implementation."""

from dfdatetime import filetime as dfdatetime_filetime

from dfvfs.lib import bde_helper
from dfvfs.lib import definitions
from dfvfs.lib import errors
from dfvfs.resolver import resolver
from dfvfs.vfs import root_only_file_entry


[docs] class BDEFileEntry(root_only_file_entry.RootOnlyFileEntry): """File system file entry that uses pybde.""" TYPE_INDICATOR = definitions.TYPE_INDICATOR_BDE
[docs] def __init__( self, resolver_context, file_system, path_spec, is_root=False, is_virtual=False): """Initializes the file entry object. Args: resolver_context (Context): resolver context. file_system (FileSystem): file system. path_spec (PathSpec): path specification. is_root (Optional[bool]): True if the file entry is the root file entry of the corresponding file system. is_virtual (Optional[bool]): True if the file entry is a virtual file Raises: BackEndError: when the BDE volume is missing. """ bde_volume = file_system.GetBDEVolume() if bde_volume is None: raise errors.BackEndError('Missing BDE volume.') super(BDEFileEntry, self).__init__( resolver_context, file_system, path_spec, is_root=is_root, is_virtual=is_virtual) self._bde_volume = bde_volume self.entry_type = definitions.FILE_ENTRY_TYPE_FILE
@property def creation_time(self): """dfdatetime.DateTimeValues: creation time or None if not available.""" timestamp = self._bde_volume.get_creation_time_as_integer() return dfdatetime_filetime.Filetime(timestamp=timestamp) @property def size(self): """int: size of the file entry in bytes or None if not available.""" return self._bde_volume.get_size()
[docs] def IsLocked(self): """Determines if the file entry is locked. Returns: bool: True if the file entry is locked. """ return self._bde_volume.is_locked()
[docs] def Unlock(self): """Unlocks the file entry. Returns: bool: True if the file entry was unlocked. """ return bde_helper.BDEUnlockVolume( self._bde_volume, self.path_spec, resolver.Resolver.key_chain)