"""mime type transformation engine for cubicweb, based on mtconverter

:organization: Logilab

:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.

:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr

:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses

"""

__docformat__ = "restructuredtext en"

from logilab import mtconverter

from logilab.mtconverter.engine import TransformEngine

from logilab.mtconverter.transform import Transform

from cubicweb.common.uilib import rest_publish, html_publish, remove_html_tags

HTML_MIMETYPES = ('text/html', 'text/xhtml', 'application/xhtml+xml')

# CubicWeb specific transformations

class rest_to_html(Transform):

    inputs = ('text/rest', 'text/x-rst')

    output = 'text/html'

    def _convert(self, trdata):

        return rest_publish(trdata.appobject, trdata.decode())

class html_to_html(Transform):

    inputs = HTML_MIMETYPES

    output = 'text/html'

    def _convert(self, trdata):

        return html_publish(trdata.appobject, trdata.data)

# Instantiate and configure the transformation engine

mtconverter.UNICODE_POLICY = 'replace'

ENGINE = TransformEngine()

ENGINE.add_transform(rest_to_html())

ENGINE.add_transform(html_to_html())

HAS_PIL_TRANSFORMS = False

HAS_PYGMENTS_TRANSFORMS = False

class html_to_text(Transform):

    inputs = HTML_MIMETYPES

    output = 'text/plain'

    def _convert(self, trdata):

        return remove_html_tags(trdata.data)

ENGINE.add_transform(html_to_text())