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# SPDX-FileCopyrightText: 2021-2022 Blender Foundation
#
# SPDX-License-Identifier: GPL-2.0-or-later
"""
Pose Library - functions.
"""
from pathlib import Path
from typing import Any, List, Iterable
Datablock = Any
import bpy
def load_assets_from(filepath: Path) -> List[Datablock]:
if not has_assets(filepath):
# Avoid loading any datablocks when there are none marked as asset.
return []
# Append everything from the file.
with bpy.data.libraries.load(str(filepath)) as (
data_from,
data_to,
):
for attr in dir(data_to):
setattr(data_to, attr, getattr(data_from, attr))
# Iterate over the appended datablocks to find assets.
def loaded_datablocks() -> Iterable[Datablock]:
for attr in dir(data_to):
datablocks = getattr(data_to, attr)
for datablock in datablocks:
yield datablock
loaded_assets = []
for datablock in loaded_datablocks():
if not getattr(datablock, "asset_data", None):
continue
# Fake User is lost when appending from another file.
datablock.use_fake_user = True
loaded_assets.append(datablock)
return loaded_assets
def has_assets(filepath: Path) -> bool:
with bpy.data.libraries.load(str(filepath), assets_only=True) as (
data_from,
_,
):
for attr in dir(data_from):
data_names = getattr(data_from, attr)
if data_names:
return True
return False
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