open62541/tools/generate_bsd.py

60 lines
2.7 KiB
Python
Executable File

#!/usr/bin/env python3
### This Source Code Form is subject to the terms of the Mozilla Public
### License, v. 2.0. If a copy of the MPL was not distributed with this
### file, You can obtain one at http://mozilla.org/MPL/2.0/.
### Copyright 2023 (c) Fraunhofer IOSB (Author: Noel Graf)
import xml.dom.minidom as dom
import codecs
import re
import base64
import argparse
###############################
# Parse the Command Line Input#
###############################
parser = argparse.ArgumentParser()
parser.add_argument('-x', '--xml',
metavar="<nodeSetXML>",
dest="xmlfile",
help='NodeSet XML file with nodes that shall be generated.')
parser.add_argument('outputFile',
metavar='<outputFile>',
help='output file w/o extension')
args = parser.parse_args()
# Extract the BSD Blob from the XML file.
nodeset_base = open(args.xmlfile, "rb")
fileContent = nodeset_base.read()
# Remove BOM since the dom parser cannot handle it on python 3 windows
if fileContent.startswith(codecs.BOM_UTF8):
fileContent = fileContent.lstrip(codecs.BOM_UTF8)
fileContent = fileContent.decode("utf-8")
# Remove the uax namespace from tags. UaModeler adds this namespace to some elements
fileContent = re.sub(r"<([/]?)uax:(.+?)([/]?)>", "<\\g<1>\\g<2>\\g<3>>", fileContent)
nodesets = dom.parseString(fileContent).getElementsByTagName("UANodeSet")
if len(nodesets) == 0 or len(nodesets) > 1:
raise Exception("contains no or more then 1 nodeset")
nodeset = nodesets[0]
variableNodes = nodeset.getElementsByTagName("UAVariable")
for nd in variableNodes:
if (nd.hasAttribute("SymbolicName") and (re.match(r".*_BinarySchema", nd.attributes["SymbolicName"].nodeValue) or nd.attributes["SymbolicName"].nodeValue == "TypeDictionary_BinarySchema")) or (nd.hasAttribute("ParentNodeId") and not nd.hasAttribute("SymbolicName") and re.fullmatch(r"i=93", nd.attributes["ParentNodeId"].nodeValue)):
type_content = nd.getElementsByTagName("Value")[0].getElementsByTagName("ByteString")[0]
with open(args.outputFile, 'w') as f:
f.write(base64.b64decode(type_content.firstChild.nodeValue).decode("utf-8"))
elif nd.hasAttribute("BrowseName") and nd.getAttribute("BrowseName").endswith("TypeDictionary"):
references = nd.getElementsByTagName("Reference")
for ref in references:
if ref.getAttribute("ReferenceType") == "HasComponent" and ref.firstChild.nodeValue == "i=93":
type_content = nd.getElementsByTagName("Value")[0].getElementsByTagName("ByteString")[0]
with open(args.outputFile, 'w') as f:
f.write(base64.b64decode(type_content.firstChild.nodeValue).decode("utf-8"))
break