author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 14 Apr 2010 11:26:36 +0200 | |
changeset 5246 | 3246b1f88a18 |
parent 4252 | 6c4f109c2b03 |
child 5421 | 8167de96c523 |
permissions | -rw-r--r-- |
"""mime type transformation engine for cubicweb, based on mtconverter :organization: Logilab :copyright: 2001-2010 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 logilab.mtconverter import (register_base_transforms, register_pil_transforms, register_pygments_transforms) from cubicweb.utils import UStringIO from cubicweb.uilib import rest_publish, html_publish 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()) try: from cubicweb.ext.tal import CubicWebContext, compile_template except ImportError: HAS_TAL = False from cubicweb import schema schema.NEED_PERM_FORMATS.remove('text/cubicweb-page-template') else: HAS_TAL = True class ept_to_html(Transform): inputs = ('text/cubicweb-page-template',) output = 'text/html' output_encoding = 'utf-8' def _convert(self, trdata): context = CubicWebContext() appobject = trdata.appobject context.update({'self': appobject, 'rset': appobject.cw_rset, 'req': appobject._cw, '_' : appobject._cw._, 'user': appobject._cw.user}) output = UStringIO() template = compile_template(trdata.encode(self.output_encoding)) template.expand(context, output) return output.getvalue() ENGINE.add_transform(ept_to_html()) if register_pil_transforms(ENGINE, verb=False): HAS_PIL_TRANSFORMS = True else: HAS_PIL_TRANSFORMS = False try: from logilab.mtconverter.transforms import pygmentstransforms for mt in ('text/plain',) + HTML_MIMETYPES: try: pygmentstransforms.mimetypes.remove(mt) except ValueError: continue register_pygments_transforms(ENGINE, verb=False) def patch_convert(cls): def _convert(self, trdata, origconvert=cls._convert): try: trdata.appobject._cw.add_css('pygments.css') except AttributeError: # session has no add_css, only http request pass return origconvert(self, trdata) cls._convert = _convert patch_convert(pygmentstransforms.PygmentsHTMLTransform) HAS_PYGMENTS_TRANSFORMS = True except ImportError: HAS_PYGMENTS_TRANSFORMS = False register_base_transforms(ENGINE, verb=False)