99 lines
2.4 KiB
Python
99 lines
2.4 KiB
Python
from __future__ import absolute_import
|
|
|
|
import binascii
|
|
import codecs
|
|
import os
|
|
from io import BytesIO
|
|
|
|
from .fields import RequestField
|
|
from .packages import six
|
|
from .packages.six import b
|
|
|
|
writer = codecs.lookup("utf-8")[3]
|
|
|
|
|
|
def choose_boundary():
|
|
"""
|
|
Our embarrassingly-simple replacement for mimetools.choose_boundary.
|
|
"""
|
|
boundary = binascii.hexlify(os.urandom(16))
|
|
if not six.PY2:
|
|
boundary = boundary.decode("ascii")
|
|
return boundary
|
|
|
|
|
|
def iter_field_objects(fields):
|
|
"""
|
|
Iterate over fields.
|
|
|
|
Supports list of (k, v) tuples and dicts, and lists of
|
|
:class:`~urllib3.fields.RequestField`.
|
|
|
|
"""
|
|
if isinstance(fields, dict):
|
|
i = six.iteritems(fields)
|
|
else:
|
|
i = iter(fields)
|
|
|
|
for field in i:
|
|
if isinstance(field, RequestField):
|
|
yield field
|
|
else:
|
|
yield RequestField.from_tuples(*field)
|
|
|
|
|
|
def iter_fields(fields):
|
|
"""
|
|
.. deprecated:: 1.6
|
|
|
|
Iterate over fields.
|
|
|
|
The addition of :class:`~urllib3.fields.RequestField` makes this function
|
|
obsolete. Instead, use :func:`iter_field_objects`, which returns
|
|
:class:`~urllib3.fields.RequestField` objects.
|
|
|
|
Supports list of (k, v) tuples and dicts.
|
|
"""
|
|
if isinstance(fields, dict):
|
|
return ((k, v) for k, v in six.iteritems(fields))
|
|
|
|
return ((k, v) for k, v in fields)
|
|
|
|
|
|
def encode_multipart_formdata(fields, boundary=None):
|
|
"""
|
|
Encode a dictionary of ``fields`` using the multipart/form-data MIME format.
|
|
|
|
:param fields:
|
|
Dictionary of fields or list of (key, :class:`~urllib3.fields.RequestField`).
|
|
|
|
:param boundary:
|
|
If not specified, then a random boundary will be generated using
|
|
:func:`urllib3.filepost.choose_boundary`.
|
|
"""
|
|
body = BytesIO()
|
|
if boundary is None:
|
|
boundary = choose_boundary()
|
|
|
|
for field in iter_field_objects(fields):
|
|
body.write(b("--%s\r\n" % (boundary)))
|
|
|
|
writer(body).write(field.render_headers())
|
|
data = field.data
|
|
|
|
if isinstance(data, int):
|
|
data = str(data) # Backwards compatibility
|
|
|
|
if isinstance(data, six.text_type):
|
|
writer(body).write(data)
|
|
else:
|
|
body.write(data)
|
|
|
|
body.write(b"\r\n")
|
|
|
|
body.write(b("--%s--\r\n" % (boundary)))
|
|
|
|
content_type = str("multipart/form-data; boundary=%s" % boundary)
|
|
|
|
return body.getvalue(), content_type
|