blender/scripts/modules/rna_xml.py
Hans Goudey 91803e130f Cleanup: Grammar: Fix uses of "for e.g."
e.g. stands for "exempli gratia" in Latin which means "for example".
The best way to make sure it makes sense when writing is to just expand
it to "for example". In these cases where the text was "for e.g.", that
leaves us with "for for example" which makes no sense. This commit fixes
all 110 cases, mostly just just replacing the words with "for example",
but also restructuring the text a bit more in a few cases, mostly by
moving "e.g." to the beginning of a list in parentheses.

Pull Request: https://projects.blender.org/blender/blender/pulls/139596
2025-05-29 21:21:18 +02:00

423 lines
16 KiB
Python

# SPDX-FileCopyrightText: 2012-2023 Blender Authors
#
# SPDX-License-Identifier: GPL-2.0-or-later
__all__ = (
"xml_file_run",
"xml_file_write",
)
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 Exception:
print("skip_typemap unknown prop_id '{:s}.{:s}'".format(cls_name, prop_id))
else:
print("skip_typemap unknown class '{:s}'".format(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.Strip,
)
def number_to_str(val, val_type):
if val_type == int:
return "{:d}".format(val)
elif val_type == float:
return "{:.6g}".format(val)
elif val_type == bool:
return "TRUE" if val else "FALSE"
else:
raise NotImplementedError("this type is not a number {:s}".format(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, point-cache 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}\"".format(prop, number_to_str(subvalue, subvalue_type)))
elif subvalue_type is str:
node_attrs.append("{:s}={:s}".format(prop, quoteattr(subvalue)))
elif subvalue_type is set:
node_attrs.append("{:s}={:s}".format(prop, quoteattr("{" + ",".join(list(subvalue)) + "}")))
elif subvalue is None:
node_attrs.append("{:s}=\"NONE\"".format(prop))
elif issubclass(subvalue_type, referenced_classes):
# special case, ID's are always referenced.
node_attrs.append("{:s}={:s}".format(prop, quoteattr(subvalue_type.__name__ + "::" + subvalue.name)))
else:
try:
subvalue_ls = list(subvalue)
except Exception:
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(("{:02x}".format(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}\"".format(prop, array_value))
else:
nodes_lists.append((prop, subvalue_ls, subvalue_type))
# declare + attributes
if pretty_format:
if node_attrs:
fw("{:s}<{:s}\n".format(ident, value_type_name))
for node_attr in node_attrs:
fw("{:s}{:s}\n".format(ident_next, node_attr))
fw("{:s}>\n".format(ident_next,))
else:
fw("{:s}<{:s}>\n".format(ident, value_type_name))
else:
fw("{:s}<{:s} {:s}>\n".format(ident, value_type_name, " ".join(node_attrs)))
# unique members
for prop, subvalue, subvalue_type in nodes_items:
fw("{:s}<{:s}>\n".format(ident_next, prop)) # XXX, this is awkward, how best to solve?
rna2xml_node(ident_next + ident_val, subvalue, value)
fw("{:s}</{:s}>\n".format(ident_next, prop)) # XXX, need to check on this.
# list members
for prop, subvalue, subvalue_type in nodes_lists:
fw("{:s}<{:s}>\n".format(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".format(ident_next, prop))
fw("{:s}</{:s}>\n".format(ident, value_type_name))
# -------------------------------------------------------------------------
# needs re-working to be generic
if root_node:
fw("{:s}<{:s}>\n".format(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 Exception:
ls = None
if type(ls) == list:
fw("{:s}<{:s}>\n".format(ident, attr))
for blend_id in ls:
rna2xml_node(ident + ident_val, blend_id, None)
fw("{:s}</{:s}>\n".format(ident_val, attr))
# any attribute
elif method == 'ATTR':
rna2xml_node(root_ident, root_rna, None)
if root_node:
fw("{:s}</{:s}>\n".format(root_ident, root_node))
# NOTE(@ideasman42): regarding `secure_types`.
# This is a safe guard when loading an untrusted XML to prevent any possibility of the XML
# paths "escaping" the intended data types, potentially writing into unexpected settings.
# This is done because the XML itself defines the attributes which are recursed into,
# there is a possibility the XML recurse into data that isn't logically owned by "root",
# out of the theme and into user preferences for example, which could change trust settings
# even executing code.
#
# At the time of writing it seems this is not possible with themes (the main user of this functionality),
# however this could become possible in the future through additional RNA properties and it wouldn't be
# obvious an exploit existed.
#
# In short, it's safest for users of this API to restrict types when loading untrusted XML.
def xml2rna(
root_xml, *,
root_rna=None, # must be set
secure_types=None, # `Set[str] | None`
):
def xml2rna_node(xml_node, value):
# print("evaluating:", xml_node.nodeName)
if (secure_types is not None) and (xml_node.nodeName not in secure_types):
print("Loading the XML with type restrictions, skipping \"{:s}\"".format(xml_node.nodeName))
return
# ---------------------------------------------------------------------
# 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".format(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}".format(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:".format(child_xml.nodeName, i))
else:
xml2rna_node(child_xml_real, subsubvalue)
else:
# print(elems)
if len(elems) == 1:
# sub node named by its type
child_xml_real = elems[0]
# print(child_xml_real, subvalue)
xml2rna_node(child_xml_real, subvalue)
else:
# empty is valid too
pass
xml2rna_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 Exception as ex:
print("Error: {!r}, path {!r} not found".format(ex, path))
value = Ellipsis
return value
def xml_file_run(
context,
filepath,
rna_map,
secure_types=None, # `set[str] | None`
):
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}".format(filepath, rna_path))
xml2rna(xml_node, root_rna=value, secure_types=secure_types)
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")