45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
# Copyright 2016 Free Software Foundation, Inc.
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# This file is part of GNU Radio
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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#
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"""
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Converter for legacy block tree definitions in XML format
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"""
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from ..core.io import yaml
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from . import xml
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def from_xml(filename):
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"""Load block tree description from xml file"""
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element, version_info = xml.load(filename, 'block_tree.dtd')
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try:
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data = convert_category_node(element)
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except NameError:
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raise ValueError('Conversion failed', filename)
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return data
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def dump(data, stream):
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out = yaml.dump(data, indent=2)
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prefix = '# auto-generated by grc.converter\n\n'
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stream.write(prefix + out)
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def convert_category_node(node):
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"""convert nested <cat> tags to nested lists dicts"""
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assert node.tag == 'cat'
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name, elements = '', []
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for child in node:
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if child.tag == 'name':
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name = child.text.strip()
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elif child.tag == 'block':
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elements.append(child.text.strip())
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elif child.tag == 'cat':
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elements.append(convert_category_node(child))
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return {name: elements}
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