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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
"""
This module has utility functions for renaming
rna values in fcurves and drivers.
The main function to use is: update_data_paths(...)
"""
IS_TESTING = False
class DataPathBuilder(object):
__slots__ = ("data_path", )
""" Dummy class used to parse fcurve and driver data paths.
"""
def __init__(self, attrs):
self.data_path = attrs
def __getattr__(self, attr):
str_value = ".%s" % attr
return DataPathBuilder(self.data_path + (str_value, ))
def __getitem__(self, key):
str_value = '["%s"]' % key
return DataPathBuilder(self.data_path + (str_value, ))
def resolve(self, real_base, rna_update_from_map=None):
""" Return (attribute, value) pairs.
"""
pairs = []
base = real_base
for item in self.data_path:
if base is not Ellipsis:
try:
# this only works when running with an old blender
# where the old path will resolve
base = eval("base" + item)
except:
base_new = Ellipsis
# guess the new name
if item.startswith("."):
for item_new in rna_update_from_map.get(item[1:], ()):
try:
print("base." + item_new)
base_new = eval("base." + item_new)
break # found, dont keep looking
except:
pass
if base_new is Ellipsis:
print("Failed to resolve data path:", self.data_path)
base = base_new
pairs.append((item, base))
return pairs
import bpy
def id_iter():
type_iter = type(bpy.data.objects)
for attr in dir(bpy.data):
data_iter = getattr(bpy.data, attr, None)
if type(data_iter) == type_iter:
for id_data in data_iter:
if id_data.library is None:
yield id_data
def anim_data_actions(anim_data):
actions = []
actions.append(anim_data.action)
for track in anim_data.nla_tracks:
for strip in track.strips:
actions.append(strip.action)
# filter out None
return [act for act in actions if act]
def classes_recursive(base_type, clss=None):
if clss is None:
clss = [base_type]
else:
clss.append(base_type)
for base_type_iter in base_type.__bases__:
if base_type_iter is not object:
classes_recursive(base_type_iter, clss)
return clss
def find_path_new(id_data, data_path, rna_update_dict, rna_update_from_map):
# ignore ID props for now
if data_path.startswith("["):
return data_path
# recursive path fixing, likely will be one in most cases.
data_path_builder = eval("DataPathBuilder(tuple())." + data_path)
data_resolve = data_path_builder.resolve(id_data, rna_update_from_map)
path_new = [pair[0] for pair in data_resolve]
# print(data_resolve)
data_base = id_data
for i, (attr, data) in enumerate(data_resolve):
if data is Ellipsis:
break
if attr.startswith("."):
# try all classes
for data_base_type in classes_recursive(type(data_base)):
attr_new = rna_update_dict.get(data_base_type.__name__, {}).get(attr[1:])
if attr_new:
path_new[i] = "." + attr_new
# set this as the base for further properties
data_base = data
data_path_new = "".join(path_new)[1:] # skip the first "."
return data_path_new
def update_data_paths(rna_update):
''' rna_update triple [(class_name, from, to), ...]
'''
# make a faster lookup dict
rna_update_dict = {}
for ren_class, ren_from, ren_to in rna_update:
rna_update_dict.setdefault(ren_class, {})[ren_from] = ren_to
rna_update_from_map = {}
for ren_class, ren_from, ren_to in rna_update:
rna_update_from_map.setdefault(ren_from, []).append(ren_to)
for id_data in id_iter():
anim_data = getattr(id_data, "animation_data", None)
if anim_data is None:
continue
for fcurve in anim_data.drivers:
for var in fcurve.driver.variables:
if var.type == 'SINGLE_PROP':
for tar in var.targets:
id_data_other = tar.id
data_path = tar.data_path
if id_data_other and data_path:
data_path_new = find_path_new(id_data_other, data_path, rna_update_dict, rna_update_from_map)
# print(data_path_new)
if data_path_new != data_path:
if not IS_TESTING:
tar.data_path = data_path_new
print("driver (%s): %s -> %s" % (id_data_other.name, data_path, data_path_new))
for action in anim_data_actions(anim_data):
for fcu in action.fcurves:
data_path = fcu.data_path
data_path_new = find_path_new(id_data, data_path, rna_update_dict, rna_update_from_map)
# print(data_path_new)
if data_path_new != data_path:
if not IS_TESTING:
fcu.data_path = data_path_new
print("fcurve (%s): %s -> %s" % (id_data.name, data_path, data_path_new))
if __name__ == "__main__":
# Example, should be called externally
# (class, from, to)
replace_ls = [
('AnimVizMotionPaths', 'frame_after', 'frame_after'),
('AnimVizMotionPaths', 'frame_before', 'frame_before'),
('AnimVizOnionSkinning', 'frame_after', 'frame_after'),
]
update_data_paths(replace_ls)
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