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[utils] Fix manifest combiner for delta patching

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Previously this would result in duplicated chunks,
causing calculations for download sizes to be incorrect.

Fixes #278
This commit is contained in:
derrod 2021-05-24 18:18:28 +02:00
parent 313323e43a
commit 7ae4eda5b8
1 changed files with 13 additions and 2 deletions
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15
legendary/utils/manifests.py
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@ -20,8 +20,19 @@ def combine_manifests(base_manifest: Manifest, delta_manifest: Manifest):
base_manifest.file_manifest_list.count = len(base_manifest.file_manifest_list.elements)
base_manifest.file_manifest_list._path_map = None
# add chunks from delta manifest to main manifest and again clear path caches
base_manifest.chunk_data_list.elements.extend(delta_manifest.chunk_data_list.elements)
# ensure guid map exists
try:
base_manifest.chunk_data_list.get_chunk_by_guid(0)
except:
pass
# add new chunks from delta manifest to main manifest and again clear maps and update count
existing_chunk_guids = base_manifest.chunk_data_list._guid_int_map.keys()
for chunk in delta_manifest.chunk_data_list.elements:
if chunk.guid_num not in existing_chunk_guids:
base_manifest.chunk_data_list.elements.append(chunk)
base_manifest.chunk_data_list.count = len(base_manifest.chunk_data_list.elements)
base_manifest.chunk_data_list._guid_map = None
base_manifest.chunk_data_list._guid_int_map = None