diff options
| author | Sebastian Koslowski <sebastian.koslowski@gmail.com> | 2016-05-03 17:13:08 +0200 |
|---|---|---|
| committer | Johnathan Corgan <johnathan@corganlabs.com> | 2017-06-29 09:16:49 -0700 |
| commit | 7f7fa2f91467fdb2b11312be8562e7b51fdeb199 (patch) | |
| tree | 24268bac15b9920d2a15ddbb45eaf3b9b03718a1 /grc/converter/block_tree.py | |
| parent | 44cae388881821942e691a4d69a923bbd8d347db (diff) | |
grc: added yaml/mako support
Includes basic converter from XML/Cheetah to YAML/Mako based block format.
Diffstat (limited to 'grc/converter/block_tree.py')
| -rw-r--r-- | grc/converter/block_tree.py | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/grc/converter/block_tree.py b/grc/converter/block_tree.py new file mode 100644 index 0000000000..dee9adba49 --- /dev/null +++ b/grc/converter/block_tree.py @@ -0,0 +1,56 @@ +# Copyright 2016 Free Software Foundation, Inc. +# This file is part of GNU Radio +# +# GNU Radio Companion 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. +# +# GNU Radio Companion 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 +""" +Converter for legacy block tree definitions in XML format +""" + +from __future__ import absolute_import, print_function + +from ..core.io import yaml +from . import xml + + +def from_xml(filename): + """Load block tree description from xml file""" + element, version_info = xml.load(filename, 'block_tree.dtd') + + try: + data = convert_category_node(element) + except NameError: + raise ValueError('Conversion failed', filename) + + return data + + +def dump(data, stream): + out = yaml.dump(data, indent=2) + prefix = '# auto-generated by grc.converter\n\n' + stream.write(prefix + out) + + +def convert_category_node(node): + """convert nested <cat> tags to nested lists dicts""" + assert node.tag == 'cat' + name, elements = '', [] + for child in node: + if child.tag == 'name': + name = child.text.strip() + elif child.tag == 'block': + elements.append(child.text.strip()) + elif child.tag == 'cat': + elements.append(convert_category_node(child)) + return {name: elements} |