+
−# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+
−# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
+
−#
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−# This file is part of CubicWeb.
+
−#
+
−# CubicWeb is free software: you can redistribute it and/or modify it under the
+
−# terms of the GNU Lesser General Public License as published by the Free
+
−# Software Foundation, either version 2.1 of the License, or (at your option)
+
−# any later version.
+
−#
+
−# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
+
−# 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
+
−# details.
+
−#
+
−# You should have received a copy of the GNU Lesser General Public License along
+
−# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
+
−"""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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−
+
−"""
+
−__docformat__ = "restructuredtext en"
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−
+
−from email import message, message_from_string
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−from Cookie import SimpleCookie
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−from StringIO import StringIO
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−from cgi import parse_header, parse_qsl
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−from pprint import pformat as _pformat
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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 qs2dict(qs):
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−    """transforms a query string into a regular python dict"""
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−    result = {}
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−    for key, value in parse_qsl(qs, True):
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−        result.setdefault(key, []).append(value)
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−    return result
+
−
+
−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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−    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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−    """
+
−    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:
+
−            break
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−        fdst.write(buf)
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−        size -= len(buf)
+
−
+
−def parse_file_upload(header_dict, post_data):
+
−    """This is adapted FROM DJANGO"""
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−    raw_message = '\r\n'.join('%s:%s' % pair for pair in header_dict.iteritems())
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−    raw_message += '\r\n\r\n' + post_data
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−    msg = message_from_string(raw_message)
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−    post, files = {}, {}
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−    for submessage in msg.get_payload():
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−        name_dict = parse_header(submessage['Content-Disposition'])[1]
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−        key = name_dict['name']
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−        # name_dict is something like {'name': 'file', 'filename': 'test.txt'} for file uploads
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−        # or {'name': 'blah'} for POST fields
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−        # We assume all uploaded files have a 'filename' set.
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−        if 'filename' in name_dict:
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−            assert type([]) != type(submessage.get_payload()), "Nested MIME messages are not supported"
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−            if not name_dict['filename'].strip():
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−                continue
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−            # IE submits the full path, so trim everything but the basename.
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−            # (We can't use os.path.basename because that uses the server's
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−            # directory separator, which may not be the same as the
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−            # client's one.)
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−            filename = name_dict['filename'][name_dict['filename'].rfind("\\")+1:]
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−            mimetype = 'Content-Type' in submessage and submessage['Content-Type'] or None
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−            content = StringIO(submessage.get_payload())
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−            files[key] = [filename, mimetype, content]
+
−        else:
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−            post.setdefault(key, []).append(submessage.get_payload())
+
−    return post, files