introduce new _ensure_correctly_typed method on fields, responsible
to ensure the value return by the widget is suitable for that kind
of field.
Also factorize date and time fields.
"""This package contains all WSGI specific code for cubicweb
NOTE: this package borrows a lot of code to Django
(http://www.djangoproject.com) and to the wsgiref module
of the python2.5's stdlib.
WSGI corresponding PEP: http://www.python.org/dev/peps/pep-0333/
:organization: Logilab
:copyright: 2008-2010 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 email import message, message_from_string
from Cookie import SimpleCookie
from StringIO import StringIO
from cgi import parse_header, parse_qsl
from pprint import pformat as _pformat
def pformat(obj):
"""pretty prints `obj` if possible"""
try:
return _pformat(obj)
except:
return u'<could not parse>'
def qs2dict(qs):
"""transforms a query string into a regular python dict"""
result = {}
for key, value in parse_qsl(qs, True):
result.setdefault(key, []).append(value)
return result
def normalize_header(header):
"""returns a normalized header name
>>> normalize_header('User_Agent')
'User-agent'
"""
return header.replace('_', '-').capitalize()
def safe_copyfileobj(fsrc, fdst, length=16*1024, size=0):
"""
THIS COMES FROM DJANGO
A version of shutil.copyfileobj that will not read more than 'size' bytes.
This makes it safe from clients sending more than CONTENT_LENGTH bytes of
data in the body.
"""
if not size:
return
while size > 0:
buf = fsrc.read(min(length, size))
if not buf:
break
fdst.write(buf)
size -= len(buf)
def parse_file_upload(header_dict, post_data):
"""This is adapted FROM DJANGO"""
raw_message = '\r\n'.join('%s:%s' % pair for pair in header_dict.iteritems())
raw_message += '\r\n\r\n' + post_data
msg = message_from_string(raw_message)
post, files = {}, {}
for submessage in msg.get_payload():
name_dict = parse_header(submessage['Content-Disposition'])[1]
key = name_dict['name']
# name_dict is something like {'name': 'file', 'filename': 'test.txt'} for file uploads
# or {'name': 'blah'} for POST fields
# We assume all uploaded files have a 'filename' set.
if 'filename' in name_dict:
assert type([]) != type(submessage.get_payload()), "Nested MIME messages are not supported"
if not name_dict['filename'].strip():
continue
# IE submits the full path, so trim everything but the basename.
# (We can't use os.path.basename because that uses the server's
# directory separator, which may not be the same as the
# client's one.)
filename = name_dict['filename'][name_dict['filename'].rfind("\\")+1:]
mimetype = 'Content-Type' in submessage and submessage['Content-Type'] or None
content = StringIO(submessage.get_payload())
files[key] = [filename, mimetype, content]
else:
post.setdefault(key, []).append(submessage.get_payload())
return post, files