4720d21283
Allow to read multiple markup formats. Supported are XML and YAML. The parsing and transformation is based on the anymarkup module. The use of anymarkup is optional and implemented as an on demand loading module. If a user uses a yaml config file or a request to convert into yaml is made without an installed anymarkup module an exception is thrown
92 lines
2.8 KiB
Python
92 lines
2.8 KiB
Python
# Copyright (c) 2020 SUSE LLC. All rights reserved.
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#
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# This file is part of kiwi.
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#
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# kiwi is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# kiwi is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with kiwi. If not, see <http://www.gnu.org/licenses/>
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#
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import os
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from tempfile import NamedTemporaryFile
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from lxml import etree
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# project
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from kiwi.defaults import Defaults
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from kiwi.exceptions import KiwiDescriptionInvalid
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class MarkupBase:
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"""
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**Implements base class for Markup interface**
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Attributes
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:param string description: description path or content
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"""
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def __init__(self, description):
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description_is_file = False
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if os.path.exists(description):
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description_is_file = True
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try:
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if description_is_file:
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self.description = description
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else:
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self.description_temporary = NamedTemporaryFile()
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with open(self.description_temporary.name, 'wb') as outfile:
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outfile.write(description)
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self.description = self.description_temporary.name
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except Exception as issue:
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raise KiwiDescriptionInvalid(issue)
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self.post_init()
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def post_init(self):
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"""
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Post initialization method
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"""
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pass
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def apply_xslt_stylesheets(self, description):
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"""
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Apply XSLT style sheet rules to an xml file
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The result of the XSLT processing is stored in a named
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temporary file and returned to the caller
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:param string description: path to an XML description file
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"""
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xslt_transform = etree.XSLT(
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etree.parse(Defaults.get_xsl_stylesheet_file())
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)
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self.description_xslt_processed = NamedTemporaryFile(prefix='xslt-')
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with open(self.description_xslt_processed.name, "wb") as xsltout:
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xsltout.write(
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etree.tostring(xslt_transform(etree.parse(description)))
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)
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return self.description_xslt_processed.name
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def get_xml_description(self):
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"""
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Return XML description file name
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Implementation in specialized Markup class
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"""
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raise NotImplementedError
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def get_yaml_description(self):
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"""
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Return YAML description file name
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Implementation in specialized Markup class
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"""
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raise NotImplementedError
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