author | Graziella Toutoungis <graziella.toutoungis@logilab.fr> |
Tue, 05 May 2009 15:40:07 +0200 | |
branch | tls-sprint |
changeset 1682 | 36bd5cba09de |
parent 1584 | 323eed40a2b7 |
child 1977 | 606923dff11b |
permissions | -rw-r--r-- |
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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 logilab.mtconverter import (register_base_transforms, |
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register_pil_transforms, |
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register_pygments_transforms) |
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from cubicweb.common.uilib import rest_publish, html_publish |
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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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try: |
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from cubicweb.ext.tal import compile_template |
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except ImportError: |
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HAS_TAL = False |
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from cubicweb.schema import FormatConstraint |
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FormatConstraint.need_perm_formats.remove('text/cubicweb-page-template') |
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else: |
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HAS_TAL = True |
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class ept_to_html(Transform): |
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inputs = ('text/cubicweb-page-template',) |
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output = 'text/html' |
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output_encoding = 'utf-8' |
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def _convert(self, trdata): |
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value = trdata.encode(self.output_encoding) |
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return trdata.appobject.tal_render(compile_template(value), {}) |
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ENGINE.add_transform(ept_to_html()) |
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if register_pil_transforms(ENGINE, verb=False): |
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HAS_PIL_TRANSFORMS = True |
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else: |
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HAS_PIL_TRANSFORMS = False |
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try: |
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from logilab.mtconverter.transforms import pygmentstransforms |
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for mt in ('text/plain',) + HTML_MIMETYPES: |
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try: |
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pygmentstransforms.mimetypes.remove(mt) |
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except ValueError: |
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continue |
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register_pygments_transforms(ENGINE, verb=False) |
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def patch_convert(cls): |
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def _convert(self, trdata, origconvert=cls._convert): |
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try: |
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trdata.appobject.req.add_css('pygments.css') |
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except AttributeError: # session has no add_css, only http request |
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pass |
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return origconvert(self, trdata) |
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cls._convert = _convert |
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patch_convert(pygmentstransforms.PygmentsHTMLTransform) |
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HAS_PYGMENTS_TRANSFORMS = True |
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except ImportError: |
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HAS_PYGMENTS_TRANSFORMS = False |
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register_base_transforms(ENGINE, verb=False) |