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connection.py	18.31 MB	View DL Edit
connectionpool.py	36.55 MB	View DL Edit
exceptions.py	8.02 MB	View DL Edit
fields.py	8.38 MB	View DL Edit
filepost.py	2.38 MB	View DL Edit
poolmanager.py	19.55 MB	View DL Edit
request.py	5.84 MB	View DL Edit
response.py	37.19 MB	View DL Edit
_collections.py	11.11 MB	View DL Edit
_version.py	63 B	View DL Edit
__init__.py	2.7 MB	View DL Edit

Edit file: /usr/lib/python3.9/site-packages/urllib3/fields.py

from __future__ import absolute_import

import email.utils
import mimetypes
import re

from .packages import six

def guess_content_type(filename, default="application/octet-stream"):
    """
    Guess the "Content-Type" of a file.

:param filename:
        The filename to guess the "Content-Type" of using :mod:`mimetypes`.
    :param default:
        If no "Content-Type" can be guessed, default to `default`.
    """
    if filename:
        return mimetypes.guess_type(filename)[0] or default
    return default

def format_header_param_rfc2231(name, value):
    """
    Helper function to format and quote a single header parameter using the
    strategy defined in RFC 2231.

Particularly useful for header parameters which might contain
    non-ASCII values, like file names. This follows
    `RFC 2388 Section 4.4 <https://tools.ietf.org/html/rfc2388#section-4.4>`_.

:param name:
        The name of the parameter, a string expected to be ASCII only.
    :param value:
        The value of the parameter, provided as ``bytes`` or `str``.
    :ret:
        An RFC-2231-formatted unicode string.
    """
    if isinstance(value, six.binary_type):
        value = value.decode("utf-8")

if not any(ch in value for ch in '"\\\r\n'):
        result = u'%s="%s"' % (name, value)
        try:
            result.encode("ascii")
        except (UnicodeEncodeError, UnicodeDecodeError):
            pass
        else:
            return result

if six.PY2:  # Python 2:
        value = value.encode("utf-8")

# encode_rfc2231 accepts an encoded string and returns an ascii-encoded
    # string in Python 2 but accepts and returns unicode strings in Python 3
    value = email.utils.encode_rfc2231(value, "utf-8")
    value = "%s*=%s" % (name, value)

if six.PY2:  # Python 2:
        value = value.decode("utf-8")

return value

_HTML5_REPLACEMENTS = {
    u"\u0022": u"%22",
    # Replace "\" with "\\".
    u"\u005C": u"\u005C\u005C",
}

# All control characters from 0x00 to 0x1F *except* 0x1B.
_HTML5_REPLACEMENTS.update(
    {
        six.unichr(cc): u"%{:02X}".format(cc)
        for cc in range(0x00, 0x1F + 1)
        if cc not in (0x1B,)
    }
)

def _replace_multiple(value, needles_and_replacements):
    def replacer(match):
        return needles_and_replacements[match.group(0)]

pattern = re.compile(
        r"|".join([re.escape(needle) for needle in needles_and_replacements.keys()])
    )

result = pattern.sub(replacer, value)

return result

def format_header_param_html5(name, value):
    """
    Helper function to format and quote a single header parameter using the
    HTML5 strategy.

Particularly useful for header parameters which might contain
    non-ASCII values, like file names. This follows the `HTML5 Working Draft
    Section 4.10.22.7`_ and matches the behavior of curl and modern browsers.

.. _HTML5 Working Draft Section 4.10.22.7:
        https://w3c.github.io/html/sec-forms.html#multipart-form-data

:param name:
        The name of the parameter, a string expected to be ASCII only.
    :param value:
        The value of the parameter, provided as ``bytes`` or `str``.
    :ret:
        A unicode string, stripped of troublesome characters.
    """
    if isinstance(value, six.binary_type):
        value = value.decode("utf-8")

value = _replace_multiple(value, _HTML5_REPLACEMENTS)

return u'%s="%s"' % (name, value)

# For backwards-compatibility.
format_header_param = format_header_param_html5

class RequestField(object):
    """
    A data container for request body parameters.

:param name:
        The name of this request field. Must be unicode.
    :param data:
        The data/value body.
    :param filename:
        An optional filename of the request field. Must be unicode.
    :param headers:
        An optional dict-like object of headers to initially use for the field.
    :param header_formatter:
        An optional callable that is used to encode and format the headers. By
        default, this is :func:`format_header_param_html5`.
    """

def __init__(
        self,
        name,
        data,
        filename=None,
        headers=None,
        header_formatter=format_header_param_html5,
    ):
        self._name = name
        self._filename = filename
        self.data = data
        self.headers = {}
        if headers:
            self.headers = dict(headers)
        self.header_formatter = header_formatter

@classmethod
    def from_tuples(cls, fieldname, value, header_formatter=format_header_param_html5):
        """
        A :class:`~urllib3.fields.RequestField` factory from old-style tuple parameters.

Supports constructing :class:`~urllib3.fields.RequestField` from
        parameter of key/value strings AND key/filetuple. A filetuple is a
        (filename, data, MIME type) tuple where the MIME type is optional.
        For example::

'foo': 'bar',
            'fakefile': ('foofile.txt', 'contents of foofile'),
            'realfile': ('barfile.txt', open('realfile').read()),
            'typedfile': ('bazfile.bin', open('bazfile').read(), 'image/jpeg'),
            'nonamefile': 'contents of nonamefile field',

Field names and filenames must be unicode.
        """
        if isinstance(value, tuple):
            if len(value) == 3:
                filename, data, content_type = value
            else:
                filename, data = value
                content_type = guess_content_type(filename)
        else:
            filename = None
            content_type = None
            data = value

request_param = cls(
            fieldname, data, filename=filename, header_formatter=header_formatter
        )
        request_param.make_multipart(content_type=content_type)

return request_param

def _render_part(self, name, value):
        """
        Overridable helper function to format a single header parameter. By
        default, this calls ``self.header_formatter``.

:param name:
            The name of the parameter, a string expected to be ASCII only.
        :param value:
            The value of the parameter, provided as a unicode string.
        """

return self.header_formatter(name, value)

def _render_parts(self, header_parts):
        """
        Helper function to format and quote a single header.

Useful for single headers that are composed of multiple items. E.g.,
        'Content-Disposition' fields.

:param header_parts:
            A sequence of (k, v) tuples or a :class:`dict` of (k, v) to format
            as `k1="v1"; k2="v2"; ...`.
        """
        parts = []
        iterable = header_parts
        if isinstance(header_parts, dict):
            iterable = header_parts.items()

for name, value in iterable:
            if value is not None:
                parts.append(self._render_part(name, value))

return u"; ".join(parts)

def render_headers(self):
        """
        Renders the headers for this request field.
        """
        lines = []

sort_keys = ["Content-Disposition", "Content-Type", "Content-Location"]
        for sort_key in sort_keys:
            if self.headers.get(sort_key, False):
                lines.append(u"%s: %s" % (sort_key, self.headers[sort_key]))

for header_name, header_value in self.headers.items():
            if header_name not in sort_keys:
                if header_value:
                    lines.append(u"%s: %s" % (header_name, header_value))

lines.append(u"\r\n")
        return u"\r\n".join(lines)

def make_multipart(
        self, content_disposition=None, content_type=None, content_location=None
    ):
        """
        Makes this request field into a multipart request field.

This method overrides "Content-Disposition", "Content-Type" and
        "Content-Location" headers to the request parameter.

:param content_type:
            The 'Content-Type' of the request body.
        :param content_location:
            The 'Content-Location' of the request body.

"""
        self.headers["Content-Disposition"] = content_disposition or u"form-data"
        self.headers["Content-Disposition"] += u"; ".join(
            [
                u"",
                self._render_parts(
                    ((u"name", self._name), (u"filename", self._filename))
                ),
            ]
        )
        self.headers["Content-Type"] = content_type
        self.headers["Content-Location"] = content_location

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