wsgi/__init__.py
author Rémi Cardona <remi.cardona@logilab.fr>
Tue, 22 Sep 2015 14:42:33 +0200
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[py3k] unicode → six.text_type
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# copyright 2003-2011 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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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""This package contains all WSGI specific code for cubicweb
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NOTE: this package borrows a lot of code to Django
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      (http://www.djangoproject.com) and to the wsgiref module
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      of the python2.5's stdlib.
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WSGI corresponding PEP: http://www.python.org/dev/peps/pep-0333/
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"""
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__docformat__ = "restructuredtext en"
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from email import message, message_from_string
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from pprint import pformat as _pformat
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from six.moves.http_cookies import SimpleCookie
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def pformat(obj):
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    """pretty prints `obj` if possible"""
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    try:
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        return _pformat(obj)
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    except Exception:
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        return u'<could not parse>'
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def normalize_header(header):
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    """returns a normalized header name
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    >>> normalize_header('User_Agent')
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    'User-agent'
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    """
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    return header.replace('_', '-').capitalize()
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def safe_copyfileobj(fsrc, fdst, length=16*1024, size=0):
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    """
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    THIS COMES FROM DJANGO
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    A version of shutil.copyfileobj that will not read more than 'size' bytes.
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    This makes it safe from clients sending more than CONTENT_LENGTH bytes of
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    data in the body.
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    """
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    if not size:
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        return
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    while size > 0:
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        buf = fsrc.read(min(length, size))
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        if not buf:
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            break
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        fdst.write(buf)
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        size -= len(buf)