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Layers: Refactor the decode/encode methods

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This commit is contained in:
Mike Auty
2020-03-04 20:29:42 +00:00
committed by ikelos
parent 77be83edc4
commit ca9d7075d3
1 changed files with 4 additions and 4 deletions
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volatility/framework/interfaces/layers.py
+4 -4
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@@ -395,7 +395,7 @@ class TranslationLayerInterface(DataLayerInterface, metaclass = ABCMeta):
"""Returns a list of layer names that this layer translates onto."""
return []
def _decode(self, layer_name: str, mapped_offset: int, offset: int, output_length: int) -> bytes:
def _decode_data(self, layer_name: str, mapped_offset: int, offset: int, output_length: int) -> bytes:
"""Decodes any necessary data.
Args:
@@ -409,7 +409,7 @@ class TranslationLayerInterface(DataLayerInterface, metaclass = ABCMeta):
The data to be read from the underlying layer."""
return self._context.layers.read(layer_name, mapped_offset, output_length)
def _encode(self, layer_name: str, mapped_offset: int, offset: int, value: bytes) -> bytes:
def _encode_data(self, layer_name: str, mapped_offset: int, offset: int, value: bytes) -> bytes:
"""Encodes any necessary data.
Args:
@@ -442,7 +442,7 @@ class TranslationLayerInterface(DataLayerInterface, metaclass = ABCMeta):
# The layer_offset can be less than the current_offset in non-linearly mapped layers
# it does not suggest an overlap, but that the data is in an encoded block
if mapped_length > 0:
processed_data = self._decode(layer, mapped_offset, layer_offset, sublength)
processed_data = self._decode_data(layer, mapped_offset, layer_offset, sublength)
if len(processed_data) != sublength:
raise ValueError("ProcessedData length does not match expected length of chunk")
output += processed_data
@@ -460,7 +460,7 @@ class TranslationLayerInterface(DataLayerInterface, metaclass = ABCMeta):
self.name, current_offset, "Layer {} cannot map offset: {}".format(self.name, current_offset))
value_chunk = value[layer_offset - offset:layer_offset - offset + sublength]
new_data = self._encode(layer, mapped_offset, layer_offset, value_chunk)
new_data = self._encode_data(layer, mapped_offset, layer_offset, value_chunk)
self._context.layers.write(layer, mapped_offset, new_data)
current_offset += len(value_chunk)