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#
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# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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# All rights reserved.
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# This component and the accompanying materials are made available
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# under the terms of "Eclipse Public License v1.0"
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# which accompanies this distribution, and is available
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# at the URL "http://www.eclipse.org/legal/epl-v10.html".
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#
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# Initial Contributors:
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# Nokia Corporation - initial contribution.
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#
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# Contributors:
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#
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# Description:
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#
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'''
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Configuration flattener
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'''
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import os
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import sys
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import logging
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3
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import pkg_resources
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pkg_resources.require('lxml')
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3
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from cone.public import exceptions
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class XsltTransformer():
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"""
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XSLT Transformer
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"""
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def _init(self,ref,configuration):
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self.logger = logging.getLogger('cone.gcfml(%s)' % self.ref)
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def transform_lxml(self, input, xslt, enc, linesep=os.linesep):
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"""
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XSLT transform with lxml.
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"""
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from lxml import etree
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if not enc:
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enc = sys.getdefaultencoding()
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try:
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xslt_doc = etree.parse(xslt)
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transform = etree.XSLT(xslt_doc)
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input_doc = etree.parse(input)
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result = str(transform(input_doc))
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postprocessed_result = post_process_result(result, enc, linesep)
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return postprocessed_result
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except Exception, e:
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logging.getLogger('cone.gcfml').error('Failed to do XSLT transformation: %s' % e)
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raise exceptions.ConeException('Failed to do XSLT transformation: %s' % (e))
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def post_process_result(string, enc, linesep):
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"""
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Does post process for result from XSLT transform
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- encoding
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- removes extra line separators
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- changes line separators
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"""
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output_string = None
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try:
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output_string = string.decode(enc)
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if not output_string.startswith('<'):
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output_string = '\n' + output_string
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output_string = output_string.replace('<?xml version="1.0" encoding="UTF-16"?>', '<?xml version="1.0" encoding="UTF-16"?>\n\n')
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output_string = output_string.replace('<?xml version="1.0" encoding="UTF-8"?>', '<?xml version="1.0" encoding="UTF-8"?>\n\n')
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output_string = output_string.replace('\n\n','\n')
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output_string = output_string.replace('\n', linesep)
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output_string+= linesep
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except Exception, e:
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logging.getLogger('cone.gcfml').error('Cannot post process result: %s \nException: %s' % (string, e))
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raise exceptions.ConeException('Cannot post process result: %s \nException: %s' % (string, e))
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return output_string
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