python (3.11.7)
1 """
2 requests.structures
3 ~~~~~~~~~~~~~~~~~~~
4
5 Data structures that power Requests.
6 """
7
8 from collections import OrderedDict
9
10 from .compat import Mapping, MutableMapping
11
12
13 class ESC[4;38;5;81mCaseInsensitiveDict(ESC[4;38;5;149mMutableMapping):
14 """A case-insensitive ``dict``-like object.
15
16 Implements all methods and operations of
17 ``MutableMapping`` as well as dict's ``copy``. Also
18 provides ``lower_items``.
19
20 All keys are expected to be strings. The structure remembers the
21 case of the last key to be set, and ``iter(instance)``,
22 ``keys()``, ``items()``, ``iterkeys()``, and ``iteritems()``
23 will contain case-sensitive keys. However, querying and contains
24 testing is case insensitive::
25
26 cid = CaseInsensitiveDict()
27 cid['Accept'] = 'application/json'
28 cid['aCCEPT'] == 'application/json' # True
29 list(cid) == ['Accept'] # True
30
31 For example, ``headers['content-encoding']`` will return the
32 value of a ``'Content-Encoding'`` response header, regardless
33 of how the header name was originally stored.
34
35 If the constructor, ``.update``, or equality comparison
36 operations are given keys that have equal ``.lower()``s, the
37 behavior is undefined.
38 """
39
40 def __init__(self, data=None, **kwargs):
41 self._store = OrderedDict()
42 if data is None:
43 data = {}
44 self.update(data, **kwargs)
45
46 def __setitem__(self, key, value):
47 # Use the lowercased key for lookups, but store the actual
48 # key alongside the value.
49 self._store[key.lower()] = (key, value)
50
51 def __getitem__(self, key):
52 return self._store[key.lower()][1]
53
54 def __delitem__(self, key):
55 del self._store[key.lower()]
56
57 def __iter__(self):
58 return (casedkey for casedkey, mappedvalue in self._store.values())
59
60 def __len__(self):
61 return len(self._store)
62
63 def lower_items(self):
64 """Like iteritems(), but with all lowercase keys."""
65 return ((lowerkey, keyval[1]) for (lowerkey, keyval) in self._store.items())
66
67 def __eq__(self, other):
68 if isinstance(other, Mapping):
69 other = CaseInsensitiveDict(other)
70 else:
71 return NotImplemented
72 # Compare insensitively
73 return dict(self.lower_items()) == dict(other.lower_items())
74
75 # Copy is required
76 def copy(self):
77 return CaseInsensitiveDict(self._store.values())
78
79 def __repr__(self):
80 return str(dict(self.items()))
81
82
83 class ESC[4;38;5;81mLookupDict(ESC[4;38;5;149mdict):
84 """Dictionary lookup object."""
85
86 def __init__(self, name=None):
87 self.name = name
88 super().__init__()
89
90 def __repr__(self):
91 return f"<lookup '{self.name}'>"
92
93 def __getitem__(self, key):
94 # We allow fall-through here, so values default to None
95
96 return self.__dict__.get(key, None)
97
98 def get(self, key, default=None):
99 return self.__dict__.get(key, default)
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