Source code for dfvfs.vfs.compressed_stream_file_entry

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

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 CompressedStreamFileEntry(root_only_file_entry.RootOnlyFileEntry): """Compressed stream file entry.""" TYPE_INDICATOR = definitions.TYPE_INDICATOR_COMPRESSED_STREAM
[docs] def __init__( self, resolver_context, file_system, path_spec, is_root=False, is_virtual=False): """Initializes a file entry. 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 compressed stream is missing. """ compressed_stream = resolver.Resolver.OpenFileObject( path_spec, resolver_context=resolver_context) if not compressed_stream: raise errors.BackEndError( f'Unable to open compressed stream: {self.path_spec.comparable:s}.') super(CompressedStreamFileEntry, self).__init__( resolver_context, file_system, path_spec, is_root=is_root, is_virtual=is_virtual) self._compressed_stream = compressed_stream self.entry_type = definitions.FILE_ENTRY_TYPE_FILE
@property def size(self): """int: size of the file entry in bytes or None if not available.""" return self._compressed_stream.get_size()