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Use tuples for multi-part lookups

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Also use real ints instead of extracting from strings.
This commit is contained in:
Campbell Barton
2016-01-26 17:28:51 +11:00
parent d54c92b6fb
commit 4d6b5bf4c0
2 changed files with 56 additions and 37 deletions
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55
bam/blend/blendfile.py
View File

@@ -416,18 +416,25 @@ class BlendFileBlock:
use_nil=True, use_str=True,
base_index=0,
):
path_full = path_root + b"." + path if path_root else path
if path_root:
path_full = (
(path_root if type(path_root) is tuple else (path_root, )) +
(path if type(path) is tuple else (path, )))
else:
path_full = path
try:
yield (path_full, self.get(path_full, default, sdna_index_refine, use_nil, use_str, base_index))
except NotImplementedError as err:
msg, dna_name, dna_type = err.args
except NotImplementedError as ex:
msg, dna_name, dna_type = ex.args
struct_index = self.file.sdna_index_from_id.get(dna_type.dna_type_id, None)
if struct_index is None:
yield (path_full, "<%s>" % dna_type.dna_type_id.decode('ascii'))
else:
struct = self.file.structs[struct_index]
for f in struct.fields:
yield from self.get_recursive_iter(f.dna_name.name_only, path_full, default, None, use_nil, use_str, 0)
yield from self.get_recursive_iter(
f.dna_name.name_only, path_full, default, None, use_nil, use_str, 0)
def items_recursive_iter(self):
for k in self.keys():
@@ -442,7 +449,8 @@ class BlendFileBlock:
# algo either. But for now does the job!
import zlib
def _is_pointer(self, k):
return self.file.structs[self.sdna_index].field_from_path(self.file.header, self.file.handle, k).dna_name.is_pointer
return self.file.structs[self.sdna_index].field_from_path(
self.file.header, self.file.handle, k).dna_name.is_pointer
hsh = 1
for k, v in self.items_recursive_iter():
@@ -485,7 +493,6 @@ class BlendFileBlock:
assert(self.file.structs[sdna_index_refine].field_from_path(
self.file.header, self.file.handle, path).dna_name.is_pointer)
if result != 0:
# possible (but unlikely)
# that this fails and returns None
@@ -688,19 +695,28 @@ class DNAStruct:
self.user_data = None
def field_from_path(self, header, handle, path):
assert(type(path) == bytes)
# support 'id.name'
name, _, name_tail = path.partition(b'.')
"""
Support lookups as bytes or a tuple of bytes and optional index.
# support 'mtex[1].tex'
# note, multi-dimensional arrays not supported
# FIXME: 'mtex[1]' works, but not 'mtex[1].tex', why is this???
if name.endswith(b']'):
name, _, index = name[:-1].partition(b'[')
index = int(index)
C style 'id.name' --> (b'id', b'name')
C style 'array[4]' --> ('array', 4)
"""
if type(path) is tuple:
name = path[0]
if len(path) >= 2 and type(path[1]) is not bytes:
name_tail = path[2:]
index = path[1]
assert(type(index) is int)
else:
name_tail = path[1:]
index = 0
else:
name = path
name_tail = None
index = 0
assert(type(name) is bytes)
field = self.field_from_name.get(name)
if field is not None:
@@ -712,7 +728,7 @@ class DNAStruct:
index_offset = field.dna_type.size * index
assert(index_offset < field.dna_size)
handle.seek(index_offset, os.SEEK_CUR)
if name_tail == b'':
if not name_tail: # None or ()
return field
else:
return field.dna_type.field_from_path(header, handle, name_tail)
@@ -721,14 +737,13 @@ class DNAStruct:
default=...,
use_nil=True, use_str=True,
):
assert(type(path) == bytes)
field = self.field_from_path(header, handle, path)
if field is None:
if default is not ...:
return default
else:
raise KeyError("%r not found in %r (%r)" % (path, [f.dna_name.name_only for f in self.fields], self.dna_type_id))
raise KeyError("%r not found in %r (%r)" %
(path, [f.dna_name.name_only for f in self.fields], self.dna_type_id))
dna_type = field.dna_type
dna_name = field.dna_name
@@ -764,7 +779,7 @@ class DNAStruct:
return DNA_IO.read_bytes(handle, dna_name.array_size)
else:
raise NotImplementedError("%r exists but isn't pointer, can't resolve field %r" %
(path, dna_name.name_only))
(path, dna_name.name_only), dna_name, dna_type)
def field_set(self, header, handle, path, value):
assert(type(path) == bytes)

38
bam/blend/blendfile_path_walker.py
View File

@@ -307,7 +307,7 @@ class FilePath:
expand_codes_idlib.setdefault(block[b'lib'], set()).add(block[b'name'])
return False
else:
id_name = block[b'id.name']
id_name = block[b'id', b'name']
# if we touched this already, don't touch again
# (else we may modify the same path multiple times)
@@ -374,7 +374,7 @@ class FilePath:
else:
def iter_blocks_id(code):
for block in blend.find_blocks_from_code(code):
if block[b'id.name'] in block_codes:
if block[b'id', b'name'] in block_codes:
yield from block_expand(block, code)
if block_codes_idlib is not None:
@@ -517,8 +517,10 @@ class FilePath:
@staticmethod
def _from_block_OB(block, basedir, extra_info, level):
# 'ob->modifiers[...].filepath'
for block_mod in bf_utils.iter_ListBase(block.get_pointer(b'modifiers.first'), next_item=b'modifier.next'):
item_md_type = block_mod[b'modifier.type']
for block_mod in bf_utils.iter_ListBase(
block.get_pointer((b'modifiers', b'first')),
next_item=(b'modifier', b'next')):
item_md_type = block_mod[b'modifier', b'type']
if item_md_type == C_defs.eModifierType_MeshCache:
yield FPElem_block_path(basedir, level, (block_mod, b'filepath')), extra_info
@@ -558,9 +560,9 @@ class FilePath:
@staticmethod
def _from_block_ME(block, basedir, extra_info, level):
block_external = block.get_pointer(b'ldata.external', None)
block_external = block.get_pointer((b'ldata', b'external'), None)
if block_external is None:
block_external = block.get_pointer(b'fdata.external', None)
block_external = block.get_pointer((b'fdata', b'external'), None)
if block_external is not None:
yield FPElem_block_path(basedir, level, (block_external, b'filename')), extra_info
@@ -585,7 +587,7 @@ class FilePath:
pass
elif item_type == C_defs.SEQ_TYPE_META:
yield from seqbase(bf_utils.iter_ListBase(
item.get_pointer(b'seqbase.first', sdna_index_refine=sdna_index_Sequence)))
item.get_pointer((b'seqbase', b'first'), sdna_index_refine=sdna_index_Sequence)))
else:
item_strip = item.get_pointer(b'strip', sdna_index_refine=sdna_index_Sequence)
if item_strip is None: # unlikely!
@@ -599,7 +601,7 @@ class FilePath:
yield FPElem_sequence_single(
basedir, level, (item_strip, b'dir', item_stripdata, b'name')), extra_info
yield from seqbase(bf_utils.iter_ListBase(block_ed.get_pointer(b'seqbase.first')))
yield from seqbase(bf_utils.iter_ListBase(block_ed.get_pointer((b'seqbase', b'first'))))
@staticmethod
def _from_block_LI(block, basedir, extra_info, level):
@@ -668,8 +670,7 @@ class ExpandID:
array_len = field.dna_size // block.file.header.pointer_size
for i in range(array_len):
path = ('mtex[%d]' % i).encode('ascii')
item = block.get_pointer(path)
item = block.get_pointer((b'mtex', i))
if item:
yield item.get_pointer(b'tex')
yield item.get_pointer(b'object')
@@ -679,7 +680,7 @@ class ExpandID:
assert(block.dna_type.dna_type_id == b'bNodeTree')
sdna_index_bNode = block.file.sdna_index_from_id[b'bNode']
for item in bf_utils.iter_ListBase(block.get_pointer(b'nodes.first')):
for item in bf_utils.iter_ListBase(block.get_pointer((b'nodes', b'first'))):
item_type = item.get(b'type', sdna_index_refine=sdna_index_bNode)
if item_type != 221: # CMP_NODE_R_LAYERS
@@ -725,7 +726,7 @@ class ExpandID:
if block_pose is not None:
assert(block_pose.dna_type.dna_type_id == b'bPose')
sdna_index_bPoseChannel = block_pose.file.sdna_index_from_id[b'bPoseChannel']
for item in bf_utils.iter_ListBase(block_pose.get_pointer(b'chanbase.first')):
for item in bf_utils.iter_ListBase(block_pose.get_pointer((b'chanbase', b'first'))):
item_custom = item.get_pointer(b'custom', sdna_index_refine=sdna_index_bPoseChannel)
if item_custom is not None:
yield item_custom
@@ -733,7 +734,8 @@ class ExpandID:
# 'ob->particlesystem[...].part'
sdna_index_ParticleSystem = block.file.sdna_index_from_id.get(b'ParticleSystem')
if sdna_index_ParticleSystem is not None:
for item in bf_utils.iter_ListBase(block.get_pointer(b'particlesystem.first')):
for item in bf_utils.iter_ListBase(
block.get_pointer((b'particlesystem', b'first'))):
item_part = item.get_pointer(b'part', sdna_index_refine=sdna_index_ParticleSystem)
if item_part is not None:
yield item_part
@@ -820,7 +822,7 @@ class ExpandID:
yield block.get_pointer(b'clip', None)
sdna_index_Base = block.file.sdna_index_from_id[b'Base']
for item in bf_utils.iter_ListBase(block.get_pointer(b'base.first')):
for item in bf_utils.iter_ListBase(block.get_pointer((b'base', b'first'))):
yield item.get_pointer(b'object', sdna_index_refine=sdna_index_Base)
block_ed = block.get_pointer(b'ed')
@@ -834,7 +836,8 @@ class ExpandID:
if item_type >= C_defs.SEQ_TYPE_EFFECT:
pass
elif item_type == C_defs.SEQ_TYPE_META:
yield from seqbase(bf_utils.iter_ListBase(item.get_pointer(b'seqbase.first', sdna_index_refine=sdna_index_Sequence)))
yield from seqbase(bf_utils.iter_ListBase(
item.get_pointer((b'seqbase' b'first'), sdna_index_refine=sdna_index_Sequence)))
else:
if item_type == C_defs.SEQ_TYPE_SCENE:
yield item.get_pointer(b'scene')
@@ -845,12 +848,13 @@ class ExpandID:
elif item_type == C_defs.SEQ_TYPE_SOUND_RAM:
yield item.get_pointer(b'sound')
yield from seqbase(bf_utils.iter_ListBase(block_ed.get_pointer(b'seqbase.first')))
yield from seqbase(bf_utils.iter_ListBase(
block_ed.get_pointer((b'seqbase', b'first'))))
@staticmethod
def expand_GR(block): # 'Group'
sdna_index_GroupObject = block.file.sdna_index_from_id[b'GroupObject']
for item in bf_utils.iter_ListBase(block.get_pointer(b'gobject.first')):
for item in bf_utils.iter_ListBase(block.get_pointer((b'gobject', b'first'))):
yield item.get_pointer(b'ob', sdna_index_refine=sdna_index_GroupObject)
# expand_GR --> {b'GR': expand_GR, ...}