# -*- coding: utf-8 -*-
"""The XFS directory implementation."""
from dfvfs.path import xfs_path_spec
from dfvfs.vfs import directory
[docs]
class XFSDirectory(directory.Directory):
"""File system directory that uses pyfsxfs."""
[docs]
def __init__(self, file_system, path_spec, fsxfs_file_entry):
"""Initializes a directory.
Args:
file_system (FileSystem): file system.
path_spec (PathSpec): path specification.
fsxfs_file_entry (pyfsxfs.file_entry): XFS file entry.
"""
super(XFSDirectory, self).__init__(file_system, path_spec)
self._fsxfs_file_entry = fsxfs_file_entry
def _EntriesGenerator(self):
"""Retrieves directory entries.
Since a directory can contain a vast number of entries using
a generator is more memory efficient.
Yields:
XFSPathSpec: XFS path specification.
"""
location = getattr(self.path_spec, 'location', None)
for fsxfs_sub_file_entry in self._fsxfs_file_entry.sub_file_entries:
directory_entry = fsxfs_sub_file_entry.name
if not location or location == self._file_system.PATH_SEPARATOR:
directory_entry = self._file_system.JoinPath([directory_entry])
else:
directory_entry = self._file_system.JoinPath([
location, directory_entry])
yield xfs_path_spec.XFSPathSpec(
inode=fsxfs_sub_file_entry.inode_number, location=directory_entry,
parent=self.path_spec.parent)