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#!/usr/bin/env python

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# -*- coding: utf-8 -*-

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# This file is part of Beremiz.

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# See COPYING file for copyrights details.

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from __future__ import absolute_import

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from lxml import etree

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class XSLTransform(object):

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    """ a class to handle XSLT queries on project and libs """

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    def __init__(self, xsltpath, xsltext):

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        # parse and compile. "beremiz" arbitrary namespace for extensions

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        self.xslt = etree.XSLT(

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            etree.parse(

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                xsltpath,

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                etree.XMLParser()),

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            extensions={("beremiz", name): call for name, call in xsltext})

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    def transform(self, root, **kwargs):

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        res = self.xslt(root, **{k: etree.XSLT.strparam(v) for k, v in kwargs.iteritems()})

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        # print(self.xslt.error_log)

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        return res

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    def get_error_log(self):

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        return self.xslt.error_log

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