autour_de_minuit/blender-asset-tracer
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Ported get_file_offset() and renamed to abs_offset()

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This commit is contained in:
Sybren A. Stüvel 2018-02-23 15:53:26 +01:00
parent aed1827ff7
commit bce5f4b670
2 changed files with 15 additions and 8 deletions
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14
blender_asset_tracer/blendfile/__init__.py
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@ -372,15 +372,13 @@ class BlendFileBlock:
sdna_index = self.bfile.sdna_index_from_id[dna_type_id]
self.refine_type_from_index(sdna_index)
def get_file_offset(self, path: bytes) -> (int, int): # TODO(Sybren): port to BAT
"""Return (offset, length)"""
assert isinstance(path, bytes)
def abs_offset(self, path: dna.FieldPath) -> (int, int):
"""Compute the absolute file offset of the field.
# TODO: refactor to just return the length, and check whether this isn't actually
# simply the same as self.size.
ofs = self.file_offset
field, _ = self.dna_type.field_from_path(self.bfile.header.pointer_size, path)
return ofs, field.name.array_size
:returns: tuple (offset in bytes, length of array in items)
"""
field, field_offset = self.dna_type.field_from_path(self.bfile.header.pointer_size, path)
return self.file_offset + field_offset, field.name.array_size
def get(self,
path: dna.FieldPath,

9
tests/test_blendfile_loading.py
View File

@ -206,6 +206,15 @@ class PointerTest(AbstractBlendFileTest):
with self.assertRaises(exceptions.SegmentationFault):
scene.get_pointer(b'ed')
def test_abs_offset(self):
scene = self.bf.code_index[b'SC'][0]
ed = scene.get_pointer(b'ed')
assert isinstance(ed, blendfile.BlendFileBlock)
abs_offset, field_size = ed.abs_offset((b'seqbase', b'first'))
self.assertEqual(ed.file_offset + 8, abs_offset)
self.assertEqual(1, field_size)
class LoadCompressedTest(AbstractBlendFileTest):
def test_loading(self):