FM / urllib3

/usr/lib/python3.6/site-packages/urllib3/

/usr/lib/python3.6/site-packages/urllib3

Name	Size	Mode	Actions
contrib/	-	0755	rm
packages/	-	0755	rm
util/	-	0755	rm
__pycache__/	-	0755	rm
connection.py	14346	0644	edit dl rm
connectionpool.py	36290	0644	edit dl rm
exceptions.py	6604	0644	edit dl rm
fields.py	5943	0644	edit dl rm
filepost.py	2436	0644	edit dl rm
poolmanager.py	17223	0644	edit dl rm
request.py	5991	0644	edit dl rm
response.py	34443	0644	edit dl rm
_collections.py	11307	0644	edit dl rm
__init__.py	2722	0644	edit dl rm

Edit: /usr/lib/python3.6/site-packages/urllib3/_collections.py (11307B)

from __future__ import absolute_import
try:
    from collections.abc import Mapping, MutableMapping
except ImportError:
    from collections import Mapping, MutableMapping
try:
    from threading import RLock
except ImportError:  # Platform-specific: No threads available
    class RLock:
        def __enter__(self):
            pass

def __exit__(self, exc_type, exc_value, traceback):
            pass

from collections import OrderedDict
from .exceptions import InvalidHeader
from .packages.six import iterkeys, itervalues, PY3

__all__ = ['RecentlyUsedContainer', 'HTTPHeaderDict']

_Null = object()

class RecentlyUsedContainer(MutableMapping):
    """
    Provides a thread-safe dict-like container which maintains up to
    ``maxsize`` keys while throwing away the least-recently-used keys beyond
    ``maxsize``.

:param maxsize:
        Maximum number of recent elements to retain.

:param dispose_func:
        Every time an item is evicted from the container,
        ``dispose_func(value)`` is called.  Callback which will get called
    """

ContainerCls = OrderedDict

def __init__(self, maxsize=10, dispose_func=None):
        self._maxsize = maxsize
        self.dispose_func = dispose_func

self._container = self.ContainerCls()
        self.lock = RLock()

def __getitem__(self, key):
        # Re-insert the item, moving it to the end of the eviction line.
        with self.lock:
            item = self._container.pop(key)
            self._container[key] = item
            return item

def __setitem__(self, key, value):
        evicted_value = _Null
        with self.lock:
            # Possibly evict the existing value of 'key'
            evicted_value = self._container.get(key, _Null)
            self._container[key] = value

# If we didn't evict an existing value, we might have to evict the
            # least recently used item from the beginning of the container.
            if len(self._container) > self._maxsize:
                _key, evicted_value = self._container.popitem(last=False)

if self.dispose_func and evicted_value is not _Null:
            self.dispose_func(evicted_value)

def __delitem__(self, key):
        with self.lock:
            value = self._container.pop(key)

if self.dispose_func:
            self.dispose_func(value)

def __len__(self):
        with self.lock:
            return len(self._container)

def __iter__(self):
        raise NotImplementedError('Iteration over this class is unlikely to be threadsafe.')

def clear(self):
        with self.lock:
            # Copy pointers to all values, then wipe the mapping
            values = list(itervalues(self._container))
            self._container.clear()

if self.dispose_func:
            for value in values:
                self.dispose_func(value)

def keys(self):
        with self.lock:
            return list(iterkeys(self._container))

class HTTPHeaderDict(MutableMapping):
    """
    :param headers:
        An iterable of field-value pairs. Must not contain multiple field names
        when compared case-insensitively.

:param kwargs:
        Additional field-value pairs to pass in to ``dict.update``.

A ``dict`` like container for storing HTTP Headers.

Field names are stored and compared case-insensitively in compliance with
    RFC 7230. Iteration provides the first case-sensitive key seen for each
    case-insensitive pair.

Using ``__setitem__`` syntax overwrites fields that compare equal
    case-insensitively in order to maintain ``dict``'s api. For fields that
    compare equal, instead create a new ``HTTPHeaderDict`` and use ``.add``
    in a loop.

If multiple fields that are equal case-insensitively are passed to the
    constructor or ``.update``, the behavior is undefined and some will be
    lost.

>>> headers = HTTPHeaderDict()
    >>> headers.add('Set-Cookie', 'foo=bar')
    >>> headers.add('set-cookie', 'baz=quxx')
    >>> headers['content-length'] = '7'
    >>> headers['SET-cookie']
    'foo=bar, baz=quxx'
    >>> headers['Content-Length']
    '7'
    """

def __init__(self, headers=None, **kwargs):
        super(HTTPHeaderDict, self).__init__()
        self._container = OrderedDict()
        if headers is not None:
            if isinstance(headers, HTTPHeaderDict):
                self._copy_from(headers)
            else:
                self.extend(headers)
        if kwargs:
            self.extend(kwargs)

def __setitem__(self, key, val):
        self._container[key.lower()] = [key, val]
        return self._container[key.lower()]

def __getitem__(self, key):
        val = self._container[key.lower()]
        return ', '.join(val[1:])

def __delitem__(self, key):
        del self._container[key.lower()]

def __contains__(self, key):
        return key.lower() in self._container

def __eq__(self, other):
        if not isinstance(other, Mapping) and not hasattr(other, 'keys'):
            return False
        if not isinstance(other, type(self)):
            other = type(self)(other)
        return (dict((k.lower(), v) for k, v in self.itermerged()) ==
                dict((k.lower(), v) for k, v in other.itermerged()))

def __ne__(self, other):
        return not self.__eq__(other)

if not PY3:  # Python 2
        iterkeys = MutableMapping.iterkeys
        itervalues = MutableMapping.itervalues

__marker = object()

def __len__(self):
        return len(self._container)

def __iter__(self):
        # Only provide the originally cased names
        for vals in self._container.values():
            yield vals[0]

def pop(self, key, default=__marker):
        '''D.pop(k[,d]) -> v, remove specified key and return the corresponding value.
          If key is not found, d is returned if given, otherwise KeyError is raised.
        '''
        # Using the MutableMapping function directly fails due to the private marker.
        # Using ordinary dict.pop would expose the internal structures.
        # So let's reinvent the wheel.
        try:
            value = self[key]
        except KeyError:
            if default is self.__marker:
                raise
            return default
        else:
            del self[key]
            return value

def discard(self, key):
        try:
            del self[key]
        except KeyError:
            pass

def add(self, key, val):
        """Adds a (name, value) pair, doesn't overwrite the value if it already
        exists.

>>> headers = HTTPHeaderDict(foo='bar')
        >>> headers.add('Foo', 'baz')
        >>> headers['foo']
        'bar, baz'
        """
        key_lower = key.lower()
        new_vals = [key, val]
        # Keep the common case aka no item present as fast as possible
        vals = self._container.setdefault(key_lower, new_vals)
        if new_vals is not vals:
            vals.append(val)

def extend(self, *args, **kwargs):
        """Generic import function for any type of header-like object.
        Adapted version of MutableMapping.update in order to insert items
        with self.add instead of self.__setitem__
        """
        if len(args) > 1:
            raise TypeError("extend() takes at most 1 positional "
                            "arguments ({0} given)".format(len(args)))
        other = args[0] if len(args) >= 1 else ()

if isinstance(other, HTTPHeaderDict):
            for key, val in other.iteritems():
                self.add(key, val)
        elif isinstance(other, Mapping):
            for key in other:
                self.add(key, other[key])
        elif hasattr(other, "keys"):
            for key in other.keys():
                self.add(key, other[key])
        else:
            for key, value in other:
                self.add(key, value)

for key, value in kwargs.items():
            self.add(key, value)

def getlist(self, key, default=__marker):
        """Returns a list of all the values for the named field. Returns an
        empty list if the key doesn't exist."""
        try:
            vals = self._container[key.lower()]
        except KeyError:
            if default is self.__marker:
                return []
            return default
        else:
            return vals[1:]

def _prepare_for_method_change(self):
        """
        Remove content-specific header fields before changing the request
        method to GET or HEAD according to RFC 9110, Section 15.4.
        """
        content_specific_headers = [
            "Content-Encoding",
            "Content-Language",
            "Content-Location",
            "Content-Type",
            "Content-Length",
            "Digest",
            "Last-Modified",
        ]
        for header in content_specific_headers:
            self.discard(header)
        return self

# Backwards compatibility for httplib
    getheaders = getlist
    getallmatchingheaders = getlist
    iget = getlist

# Backwards compatibility for http.cookiejar
    get_all = getlist

def __repr__(self):
        return "%s(%s)" % (type(self).__name__, dict(self.itermerged()))

def _copy_from(self, other):
        for key in other:
            val = other.getlist(key)
            if isinstance(val, list):
                # Don't need to convert tuples
                val = list(val)
            self._container[key.lower()] = [key] + val

def copy(self):
        clone = type(self)()
        clone._copy_from(self)
        return clone

def iteritems(self):
        """Iterate over all header lines, including duplicate ones."""
        for key in self:
            vals = self._container[key.lower()]
            for val in vals[1:]:
                yield vals[0], val

def itermerged(self):
        """Iterate over all headers, merging duplicate ones together."""
        for key in self:
            val = self._container[key.lower()]
            yield val[0], ', '.join(val[1:])

def items(self):
        return list(self.iteritems())

@classmethod
    def from_httplib(cls, message):  # Python 2
        """Read headers from a Python 2 httplib message object."""
        # python2.7 does not expose a proper API for exporting multiheaders
        # efficiently. This function re-reads raw lines from the message
        # object and extracts the multiheaders properly.
        obs_fold_continued_leaders = (' ', '\t')
        headers = []

for line in message.headers:
            if line.startswith(obs_fold_continued_leaders):
                if not headers:
                    # We received a header line that starts with OWS as described
                    # in RFC-7230 S3.2.4. This indicates a multiline header, but
                    # there exists no previous header to which we can attach it.
                    raise InvalidHeader(
                        'Header continuation with no previous header: %s' % line
                    )
                else:
                    key, value = headers[-1]
                    headers[-1] = (key, value + ' ' + line.strip())
                    continue

key, value = line.split(':', 1)
            headers.append((key, value.strip()))

return cls(headers)

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