goa/overrides/mttransforms.py
author Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
Thu, 28 May 2009 08:06:12 +0200
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"""mime type transformation engine for cubicweb, based on mtconverter
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:organization: Logilab
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
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"""
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__docformat__ = "restructuredtext en"
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from logilab import mtconverter
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from logilab.mtconverter.engine import TransformEngine
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from logilab.mtconverter.transform import Transform
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from cubicweb.common.uilib import rest_publish, html_publish, remove_html_tags
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HTML_MIMETYPES = ('text/html', 'text/xhtml', 'application/xhtml+xml')
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# CubicWeb specific transformations
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class rest_to_html(Transform):
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    inputs = ('text/rest', 'text/x-rst')
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    output = 'text/html'
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    def _convert(self, trdata):
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        return rest_publish(trdata.appobject, trdata.decode())
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class html_to_html(Transform):
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    inputs = HTML_MIMETYPES
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    output = 'text/html'
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    def _convert(self, trdata):
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        return html_publish(trdata.appobject, trdata.data)
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# Instantiate and configure the transformation engine
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mtconverter.UNICODE_POLICY = 'replace'
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ENGINE = TransformEngine()
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ENGINE.add_transform(rest_to_html())
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ENGINE.add_transform(html_to_html())
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HAS_PIL_TRANSFORMS = False
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HAS_PYGMENTS_TRANSFORMS = False
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class html_to_text(Transform):
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    inputs = HTML_MIMETYPES
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    output = 'text/plain'
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    def _convert(self, trdata):
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        return remove_html_tags(trdata.data)
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ENGINE.add_transform(html_to_text())