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Edit File : filepost.py \| Size : 2.33 KB
from __future__ import annotations import binascii import codecs import os import typing from io import BytesIO from .fields import _TYPE_FIELD_VALUE_TUPLE, RequestField writer = codecs.lookup("utf-8")[3] _TYPE_FIELDS_SEQUENCE = typing.Sequence[ typing.Union[tuple[str, _TYPE_FIELD_VALUE_TUPLE], RequestField] ] _TYPE_FIELDS = typing.Union[ _TYPE_FIELDS_SEQUENCE, typing.Mapping[str, _TYPE_FIELD_VALUE_TUPLE], ] def choose_boundary() -> str: """ Our embarrassingly-simple replacement for mimetools.choose_boundary. """ return binascii.hexlify(os.urandom(16)).decode() def iter_field_objects(fields: _TYPE_FIELDS) -> typing.Iterable[RequestField]: """ Iterate over fields. Supports list of (k, v) tuples and dicts, and lists of :class:`~urllib3.fields.RequestField`. """ iterable: typing.Iterable[RequestField \| tuple[str, _TYPE_FIELD_VALUE_TUPLE]] if isinstance(fields, typing.Mapping): iterable = fields.items() else: iterable = fields for field in iterable: if isinstance(field, RequestField): yield field else: yield RequestField.from_tuples(*field) def encode_multipart_formdata( fields: _TYPE_FIELDS, boundary: str \| None = None ) -> tuple[bytes, str]: """ 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`). Values are processed by :func:`urllib3.fields.RequestField.from_tuples`. :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(f"--{boundary}\r\n".encode("latin-1")) writer(body).write(field.render_headers()) data = field.data if isinstance(data, int): data = str(data) # Backwards compatibility if isinstance(data, str): writer(body).write(data) else: body.write(data) body.write(b"\r\n") body.write(f"--{boundary}--\r\n".encode("latin-1")) content_type = f"multipart/form-data; boundary={boundary}" return body.getvalue(), content_type Back

Edit File : filepost.py | Size : 2.33 KB

from __future__ import annotations

import binascii
import codecs
import os
import typing
from io import BytesIO

from .fields import _TYPE_FIELD_VALUE_TUPLE, RequestField

writer = codecs.lookup("utf-8")[3]

_TYPE_FIELDS_SEQUENCE = typing.Sequence[
    typing.Union[tuple[str, _TYPE_FIELD_VALUE_TUPLE], RequestField]
]
_TYPE_FIELDS = typing.Union[
    _TYPE_FIELDS_SEQUENCE,
    typing.Mapping[str, _TYPE_FIELD_VALUE_TUPLE],
]

def choose_boundary() -> str:
    """
    Our embarrassingly-simple replacement for mimetools.choose_boundary.
    """
    return binascii.hexlify(os.urandom(16)).decode()

def iter_field_objects(fields: _TYPE_FIELDS) -> typing.Iterable[RequestField]:
    """
    Iterate over fields.

Supports list of (k, v) tuples and dicts, and lists of
    :class:`~urllib3.fields.RequestField`.

"""
    iterable: typing.Iterable[RequestField | tuple[str, _TYPE_FIELD_VALUE_TUPLE]]

if isinstance(fields, typing.Mapping):
        iterable = fields.items()
    else:
        iterable = fields

for field in iterable:
        if isinstance(field, RequestField):
            yield field
        else:
            yield RequestField.from_tuples(*field)

def encode_multipart_formdata(
    fields: _TYPE_FIELDS, boundary: str | None = None
) -> tuple[bytes, str]:
    """
    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`).
        Values are processed by :func:`urllib3.fields.RequestField.from_tuples`.

: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(f"--{boundary}\r\n".encode("latin-1"))

writer(body).write(field.render_headers())
        data = field.data

if isinstance(data, int):
            data = str(data)  # Backwards compatibility

if isinstance(data, str):
            writer(body).write(data)
        else:
            body.write(data)

body.write(b"\r\n")

body.write(f"--{boundary}--\r\n".encode("latin-1"))

content_type = f"multipart/form-data; boundary={boundary}"

return body.getvalue(), content_type

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