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# SPDX-License-Identifier: GPL-2.0-or-later
import sys
import os
# may split this out into a new file
def replace_bpy_app_version():
""" So MD5's are predictable from output which uses blenders versions.
"""
import bpy
app = bpy.app
app_fake = type(bpy)("bpy.app")
for attr in dir(app):
if not attr.startswith("_"):
setattr(app_fake, attr, getattr(app, attr))
app_fake.version = 0, 0, 0
app_fake.version_string = "0.00 (sub 0)"
bpy.app = app_fake
def clear_startup_blend():
import bpy
for col in bpy.data.collections:
for obj in col.objects:
col.objects.unlink(obj)
def blend_to_md5():
import bpy
scene = bpy.context.scene
ROUND = 4
def matrix2str(matrix):
return "".join([str(round(axis, ROUND)) for vector in matrix for axis in vector]).encode('ASCII')
def coords2str(seq, attr):
return "".join([str(round(axis, ROUND)) for vertex in seq for axis in getattr(vertex, attr)]).encode('ASCII')
import hashlib
md5 = hashlib.new("md5")
md5_update = md5.update
for obj in scene.objects:
md5_update(matrix2str(obj.matrix_world))
data = obj.data
if type(data) == bpy.types.Mesh:
md5_update(coords2str(data.vertices, "co"))
elif type(data) == bpy.types.Curve:
for spline in data.splines:
md5_update(coords2str(spline.bezier_points, "co"))
md5_update(coords2str(spline.points, "co"))
return md5.hexdigest()
def main():
argv = sys.argv
print(" args:", " ".join(argv))
argv = argv[argv.index("--") + 1:]
def arg_extract(arg, optional=True, array=False):
arg += "="
if array:
value = []
else:
value = None
i = 0
while i < len(argv):
if argv[i].startswith(arg):
item = argv[i][len(arg):]
del argv[i]
i -= 1
if array:
value.append(item)
else:
value = item
break
i += 1
if (not value) and (not optional):
print(" '%s' not set" % arg)
sys.exit(1)
return value
run = arg_extract("--run", optional=False)
md5 = arg_extract("--md5", optional=False)
md5_method = arg_extract("--md5_method", optional=False) # 'SCENE' / 'FILE'
# only when md5_method is 'FILE'
md5_source = arg_extract("--md5_source", optional=True, array=True)
# save blend file, for testing
write_blend = arg_extract("--write-blend", optional=True)
# ensure files are written anew
for f in md5_source:
if os.path.exists(f):
os.remove(f)
import bpy
replace_bpy_app_version()
if not bpy.data.filepath:
clear_startup_blend()
print(" Running: '%s'" % run)
print(" MD5: '%s'!" % md5)
result = eval(run)
if write_blend is not None:
print(" Writing Blend: %s" % write_blend)
bpy.ops.wm.save_mainfile('EXEC_DEFAULT', filepath=write_blend)
print(" Result: '%s'" % str(result))
if not result:
print(" Running: %s -> False" % run)
sys.exit(1)
if md5_method == 'SCENE':
md5_new = blend_to_md5()
elif md5_method == 'FILE':
if not md5_source:
print(" Missing --md5_source argument")
sys.exit(1)
for f in md5_source:
if not os.path.exists(f):
print(" Missing --md5_source=%r argument does not point to a file")
sys.exit(1)
import hashlib
md5_instance = hashlib.new("md5")
md5_update = md5_instance.update
for f in md5_source:
filehandle = open(f, "rb")
md5_update(filehandle.read())
filehandle.close()
md5_new = md5_instance.hexdigest()
else:
print(" Invalid --md5_method=%s argument is not a valid source")
sys.exit(1)
if md5 != md5_new:
print(" Running: %s\n MD5 Received: %s\n MD5 Expected: %s" % (run, md5_new, md5))
sys.exit(1)
print(" Success: %s" % run)
if __name__ == "__main__":
main()
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