blender/scripts/modules/rna_xml.py
Campbell Barton e955c94ed3 License Headers: Set copyright to "Blender Authors", add AUTHORS
Listing the "Blender Foundation" as copyright holder implied the Blender
Foundation holds copyright to files which may include work from many
developers.

While keeping copyright on headers makes sense for isolated libraries,
Blender's own code may be refactored or moved between files in a way
that makes the per file copyright holders less meaningful.

Copyright references to the "Blender Foundation" have been replaced with
"Blender Authors", with the exception of `./extern/` since these this
contains libraries which are more isolated, any changed to license
headers there can be handled on a case-by-case basis.

Some directories in `./intern/` have also been excluded:

- `./intern/cycles/` it's own `AUTHORS` file is planned.
- `./intern/opensubdiv/`.

An "AUTHORS" file has been added, using the chromium projects authors
file as a template.

Design task: #110784

Ref !110783.
2023-08-16 00:20:26 +10:00

394 lines
14 KiB
Python

# SPDX-FileCopyrightText: 2012-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later
import bpy
def build_property_typemap(skip_classes, skip_typemap):
property_typemap = {}
for attr in dir(bpy.types):
# Skip internal methods.
if attr.startswith("_"):
continue
cls = getattr(bpy.types, attr)
if issubclass(cls, skip_classes):
continue
bl_rna = getattr(cls, "bl_rna", None)
# Needed to skip classes added to the modules `__dict__`.
if bl_rna is None:
continue
# # to support skip-save we can't get all props
# properties = bl_rna.properties.keys()
properties = []
for prop_id, prop in bl_rna.properties.items():
if not prop.is_skip_save:
properties.append(prop_id)
properties.remove("rna_type")
property_typemap[attr] = properties
if skip_typemap:
for cls_name, properties_blacklist in skip_typemap.items():
properties = property_typemap.get(cls_name)
if properties is not None:
for prop_id in properties_blacklist:
try:
properties.remove(prop_id)
except:
print("skip_typemap unknown prop_id '%s.%s'" % (cls_name, prop_id))
else:
print("skip_typemap unknown class '%s'" % cls_name)
return property_typemap
def print_ln(data):
print(data, end="")
def rna2xml(
fw=print_ln,
root_node="",
root_rna=None, # must be set
root_rna_skip=set(),
root_ident="",
ident_val=" ",
skip_classes=(
bpy.types.Operator,
bpy.types.Panel,
bpy.types.KeyingSet,
bpy.types.Header,
bpy.types.PropertyGroup,
),
skip_typemap=None,
pretty_format=True,
method='DATA',
):
from xml.sax.saxutils import quoteattr
property_typemap = build_property_typemap(skip_classes, skip_typemap)
# don't follow properties of this type, just reference them by name
# they MUST have a unique 'name' property.
# 'ID' covers most types
referenced_classes = (
bpy.types.ID,
bpy.types.Bone,
bpy.types.ActionGroup,
bpy.types.PoseBone,
bpy.types.Node,
bpy.types.Sequence,
)
def number_to_str(val, val_type):
if val_type == int:
return "%d" % val
elif val_type == float:
return "%.6g" % val
elif val_type == bool:
return "TRUE" if val else "FALSE"
else:
raise NotImplementedError("this type is not a number %s" % val_type)
def rna2xml_node(ident, value, parent):
ident_next = ident + ident_val
# divide into attrs and nodes.
node_attrs = []
nodes_items = []
nodes_lists = []
value_type = type(value)
if issubclass(value_type, skip_classes):
return
# XXX, fixme, pointcache has eternal nested pointer to itself.
if value == parent:
return
value_type_name = value_type.__name__
for prop in property_typemap[value_type_name]:
subvalue = getattr(value, prop)
subvalue_type = type(subvalue)
if subvalue_type in {int, bool, float}:
node_attrs.append("%s=\"%s\"" % (prop, number_to_str(subvalue, subvalue_type)))
elif subvalue_type is str:
node_attrs.append("%s=%s" % (prop, quoteattr(subvalue)))
elif subvalue_type is set:
node_attrs.append("%s=%s" % (prop, quoteattr("{" + ",".join(list(subvalue)) + "}")))
elif subvalue is None:
node_attrs.append("%s=\"NONE\"" % prop)
elif issubclass(subvalue_type, referenced_classes):
# special case, ID's are always referenced.
node_attrs.append("%s=%s" % (prop, quoteattr(subvalue_type.__name__ + "::" + subvalue.name)))
else:
try:
subvalue_ls = list(subvalue)
except:
subvalue_ls = None
if subvalue_ls is None:
nodes_items.append((prop, subvalue, subvalue_type))
else:
# check if the list contains native types
subvalue_rna = value.path_resolve(prop, False)
if type(subvalue_rna).__name__ == "bpy_prop_array":
# check if this is a 0-1 color (rgb, rgba)
# in that case write as a hexadecimal
prop_rna = value.bl_rna.properties[prop]
if (prop_rna.subtype == 'COLOR_GAMMA' and
prop_rna.hard_min == 0.0 and
prop_rna.hard_max == 1.0 and
prop_rna.array_length in {3, 4}):
# -----
# color
array_value = "#" + "".join(("%.2x" % int(v * 255) for v in subvalue_rna))
else:
# default
def str_recursive(s):
subsubvalue_type = type(s)
if subsubvalue_type in {int, float, bool}:
return number_to_str(s, subsubvalue_type)
else:
return " ".join([str_recursive(si) for si in s])
array_value = " ".join(str_recursive(v) for v in subvalue_rna)
node_attrs.append("%s=\"%s\"" % (prop, array_value))
else:
nodes_lists.append((prop, subvalue_ls, subvalue_type))
# declare + attributes
if pretty_format:
if node_attrs:
fw("%s<%s\n" % (ident, value_type_name))
for node_attr in node_attrs:
fw("%s%s\n" % (ident_next, node_attr))
fw("%s>\n" % (ident_next,))
else:
fw("%s<%s>\n" % (ident, value_type_name))
else:
fw("%s<%s %s>\n" % (ident, value_type_name, " ".join(node_attrs)))
# unique members
for prop, subvalue, subvalue_type in nodes_items:
fw("%s<%s>\n" % (ident_next, prop)) # XXX, this is awkward, how best to solve?
rna2xml_node(ident_next + ident_val, subvalue, value)
fw("%s</%s>\n" % (ident_next, prop)) # XXX, need to check on this.
# list members
for prop, subvalue, subvalue_type in nodes_lists:
fw("%s<%s>\n" % (ident_next, prop))
for subvalue_item in subvalue:
if subvalue_item is not None:
rna2xml_node(ident_next + ident_val, subvalue_item, value)
fw("%s</%s>\n" % (ident_next, prop))
fw("%s</%s>\n" % (ident, value_type_name))
# -------------------------------------------------------------------------
# needs re-working to be generic
if root_node:
fw("%s<%s>\n" % (root_ident, root_node))
# bpy.data
if method == 'DATA':
ident = root_ident + ident_val
for attr in dir(root_rna):
# exceptions
if attr.startswith("_"):
continue
elif attr in root_rna_skip:
continue
value = getattr(root_rna, attr)
try:
ls = value[:]
except:
ls = None
if type(ls) == list:
fw("%s<%s>\n" % (ident, attr))
for blend_id in ls:
rna2xml_node(ident + ident_val, blend_id, None)
fw("%s</%s>\n" % (ident_val, attr))
# any attribute
elif method == 'ATTR':
rna2xml_node(root_ident, root_rna, None)
if root_node:
fw("%s</%s>\n" % (root_ident, root_node))
def xml2rna(
root_xml, *,
root_rna=None, # must be set
):
def rna2xml_node(xml_node, value):
# print("evaluating:", xml_node.nodeName)
# ---------------------------------------------------------------------
# Simple attributes
for attr in xml_node.attributes.keys():
# print(" ", attr)
subvalue = getattr(value, attr, Ellipsis)
if subvalue is Ellipsis:
print("%s.%s not found" % (type(value).__name__, attr))
else:
value_xml = xml_node.attributes[attr].value
subvalue_type = type(subvalue)
# tp_name = 'UNKNOWN'
if subvalue_type == float:
value_xml_coerce = float(value_xml)
# tp_name = 'FLOAT'
elif subvalue_type == int:
value_xml_coerce = int(value_xml)
# tp_name = 'INT'
elif subvalue_type == bool:
value_xml_coerce = {'TRUE': True, 'FALSE': False}[value_xml]
# tp_name = 'BOOL'
elif subvalue_type == str:
value_xml_coerce = value_xml
# tp_name = 'STR'
elif hasattr(subvalue, "__len__"):
if value_xml.startswith("#"):
# read hexadecimal value as float array
value_xml_split = value_xml[1:]
value_xml_coerce = [int(value_xml_split[i:i + 2], 16) /
255 for i in range(0, len(value_xml_split), 2)]
del value_xml_split
else:
value_xml_split = value_xml.split()
try:
value_xml_coerce = [int(v) for v in value_xml_split]
except ValueError:
try:
value_xml_coerce = [float(v) for v in value_xml_split]
except ValueError: # bool vector property
value_xml_coerce = [{'TRUE': True, 'FALSE': False}[v] for v in value_xml_split]
del value_xml_split
# tp_name = 'ARRAY'
# print(" %s.%s (%s) --- %s" % (type(value).__name__, attr, tp_name, subvalue_type))
try:
setattr(value, attr, value_xml_coerce)
except ValueError:
# size mismatch
val = getattr(value, attr)
if len(val) < len(value_xml_coerce):
setattr(value, attr, value_xml_coerce[:len(val)])
else:
setattr(value, attr, list(value_xml_coerce) + list(val)[len(value_xml_coerce):])
# ---------------------------------------------------------------------
# Complex attributes
for child_xml in xml_node.childNodes:
if child_xml.nodeType == child_xml.ELEMENT_NODE:
# print()
# print(child_xml.nodeName)
subvalue = getattr(value, child_xml.nodeName, None)
if subvalue is not None:
elems = []
for child_xml_real in child_xml.childNodes:
if child_xml_real.nodeType == child_xml_real.ELEMENT_NODE:
elems.append(child_xml_real)
del child_xml_real
if hasattr(subvalue, "__len__"):
# Collection
if len(elems) != len(subvalue):
print("Size Mismatch! collection:", child_xml.nodeName)
else:
for i in range(len(elems)):
child_xml_real = elems[i]
subsubvalue = subvalue[i]
if child_xml_real is None or subsubvalue is None:
print("None found %s - %d collection:", (child_xml.nodeName, i))
else:
rna2xml_node(child_xml_real, subsubvalue)
else:
# print(elems)
if len(elems) == 1:
# sub node named by its type
child_xml_real, = elems
# print(child_xml_real, subvalue)
rna2xml_node(child_xml_real, subvalue)
else:
# empty is valid too
pass
rna2xml_node(root_xml, root_rna)
# -----------------------------------------------------------------------------
# Utility function used by presets.
# The idea is you can run a preset like a script with a few args.
#
# This roughly matches the operator 'bpy.ops.script.python_file_run'
def _get_context_val(context, path):
try:
value = context.path_resolve(path)
except BaseException as ex:
print("Error: %r, path %r not found" % (ex, path))
value = Ellipsis
return value
def xml_file_run(context, filepath, rna_map):
import xml.dom.minidom
xml_nodes = xml.dom.minidom.parse(filepath)
bpy_xml = xml_nodes.getElementsByTagName("bpy")[0]
for rna_path, xml_tag in rna_map:
# first get xml
# TODO, error check
xml_node = bpy_xml.getElementsByTagName(xml_tag)[0]
value = _get_context_val(context, rna_path)
if value is not Ellipsis and value is not None:
# print(" loading XML: %r -> %r" % (filepath, rna_path))
xml2rna(xml_node, root_rna=value)
def xml_file_write(context, filepath, rna_map, *, skip_typemap=None):
with open(filepath, "w", encoding="utf-8") as file:
fw = file.write
fw("<bpy>\n")
for rna_path, _xml_tag in rna_map:
# xml_tag is ignored, we get this from the rna
value = _get_context_val(context, rna_path)
rna2xml(
fw=fw,
root_rna=value,
method='ATTR',
root_ident=" ",
ident_val=" ",
skip_typemap=skip_typemap,
)
fw("</bpy>\n")