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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 translates a python like XML representation into XML
or simple python blender/ui function calls.
sometag(arg=10) [
another()
another(key="value")
]
# converts into ...
<sometag arg="10">
<another/>
<another key="value" />
</sometag>
"""
TAG, ARGS, CHILDREN = range(3)
class ReturnStore(tuple):
def __getitem__(self, key):
# single item get's
if type(key) is ReturnStore:
key = (key, )
if type(key) is tuple:
children = self[CHILDREN]
if children:
raise Exception("Only a single __getitem__ is allowed on the ReturnStore")
else:
children[:] = key
return self
else:
return tuple.__getitem__(self, key)
class FunctionStore:
def __call__(self, **kwargs):
return ReturnStore((self.__class__.__name__, kwargs, []))
def tag_vars(tags, module=__name__):
return {tag: type(tag, (FunctionStore, ), {"__module__": module})() for tag in tags}
def tag_module(mod_name, tags):
import sys
from types import ModuleType
mod = ModuleType(mod_name)
sys.modules[mod_name] = mod
dict_values = tag_vars(tags, mod_name)
mod.__dict__.update(dict_values)
return mod
def toxml(py_data, indent=" "):
if len(py_data) != 1 or type(py_data) != list:
raise Exception("Expected a list with one member")
def _to_xml(py_item, xml_node=None):
if xml_node is None:
xml_node = newdoc.createElement(py_item[TAG])
for key, value in py_item[ARGS].items():
xml_node.setAttribute(key, str(value))
for py_item_child in py_item[CHILDREN]:
xml_node.appendChild(_to_xml(py_item_child))
return xml_node
def _to_xml_iter(xml_parent, data_ls):
for py_item in data_ls:
xml_node = newdoc.createElement(py_item[TAG])
# ok if its empty
_to_xml_iter(xml_node, py_item[CHILDREN])
import xml.dom.minidom
impl = xml.dom.minidom.getDOMImplementation()
newdoc = impl.createDocument(None, py_data[0][TAG], None)
_to_xml(py_data[0], newdoc.documentElement)
return newdoc.documentElement.toprettyxml(indent=" ")
def fromxml(data):
def _fromxml_kwargs(xml_node):
kwargs = {}
for key, value in xml_node.attributes.items():
kwargs[key] = value
return kwargs
def _fromxml(xml_node):
py_item = (xml_node.tagName, _fromxml_kwargs(xml_node), [])
#_fromxml_iter(py_item, xml_node.childNodes)
for xml_node_child in xml_node.childNodes:
if xml_node_child.nodeType not in {xml_node_child.TEXT_NODE, xml_node_child.COMMENT_NODE}:
py_item[CHILDREN].append(_fromxml(xml_node_child))
return py_item
import xml.dom.minidom
xml_doc = xml.dom.minidom.parseString(data)
return [_fromxml(xml_doc.documentElement)]
def topretty_py(py_data, indent=" "):
if len(py_data) != 1:
raise Exception("Expected a list with one member")
lines = []
def _to_kwargs(kwargs):
return ", ".join([("%s=%s" % (key, repr(value))) for key, value in sorted(kwargs.items())])
def _topretty(py_item, indent_ctx, last):
if py_item[CHILDREN]:
lines.append("%s%s(%s) [" % (indent_ctx, py_item[TAG], _to_kwargs(py_item[ARGS])))
py_item_last = py_item[CHILDREN][-1]
for py_item_child in py_item[CHILDREN]:
_topretty(py_item_child, indent_ctx + indent, (py_item_child is py_item_last))
lines.append("%s]%s" % (indent_ctx, ("" if last else ",")))
else:
lines.append("%s%s(%s)%s" % (indent_ctx, py_item[TAG], _to_kwargs(py_item[ARGS]), ("" if last else ",")))
_topretty(py_data[0], "", True)
return "\n".join(lines)
if __name__ == "__main__":
# testing code.
tag_module("bpyml_test", ("ui", "prop", "row", "column", "active", "separator", "split"))
from bpyml_test import *
draw = [
ui()[
split()[
column()[
prop(data='context.scene.render', property='use_stamp_time', text='Time'),
prop(data='context.scene.render', property='use_stamp_date', text='Date'),
prop(data='context.scene.render', property='use_stamp_render_time', text='RenderTime'),
prop(data='context.scene.render', property='use_stamp_frame', text='Frame'),
prop(data='context.scene.render', property='use_stamp_scene', text='Scene'),
prop(data='context.scene.render', property='use_stamp_camera', text='Camera'),
prop(data='context.scene.render', property='use_stamp_filename', text='Filename'),
prop(data='context.scene.render', property='use_stamp_marker', text='Marker'),
prop(data='context.scene.render', property='use_stamp_sequencer_strip', text='Seq. Strip')
],
column()[
active(expr='context.scene.render.use_stamp'),
prop(data='context.scene.render', property='stamp_foreground', slider=True),
prop(data='context.scene.render', property='stamp_background', slider=True),
separator(),
prop(data='context.scene.render', property='stamp_font_size', text='Font Size')
]
],
split(percentage=0.2)[
prop(data='context.scene.render', property='use_stamp_note', text='Note'),
row()[
active(expr='context.scene.render.use_stamp_note'),
prop(data='context.scene.render', property='stamp_note_text', text='')
]
]
]
]
xml_data = toxml(draw)
print(xml_data) # xml version
py_data = fromxml(xml_data)
print(py_data) # converted back to py
xml_data = toxml(py_data)
print(xml_data) # again back to xml
py_data = fromxml(xml_data) # pretty python version
print(topretty_py(py_data))
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