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annotate venv/lib/python2.7/site-packages/requests/structures.py @ 0:d67268158946 draft

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planemo upload commit a3f181f5f126803c654b3a66dd4e83a48f7e203b
author bcclaywell
date Mon, 12 Oct 2015 17:43:33 -0400
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1 # -*- coding: utf-8 -*-
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2
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3 """
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4 requests.structures
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5 ~~~~~~~~~~~~~~~~~~~
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6
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7 Data structures that power Requests.
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8
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9 """
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10
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11 import collections
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12
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13
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14 class CaseInsensitiveDict(collections.MutableMapping):
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15 """
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16 A case-insensitive ``dict``-like object.
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17
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18 Implements all methods and operations of
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19 ``collections.MutableMapping`` as well as dict's ``copy``. Also
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20 provides ``lower_items``.
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21
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22 All keys are expected to be strings. The structure remembers the
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23 case of the last key to be set, and ``iter(instance)``,
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24 ``keys()``, ``items()``, ``iterkeys()``, and ``iteritems()``
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25 will contain case-sensitive keys. However, querying and contains
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26 testing is case insensitive::
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27
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28 cid = CaseInsensitiveDict()
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29 cid['Accept'] = 'application/json'
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30 cid['aCCEPT'] == 'application/json' # True
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31 list(cid) == ['Accept'] # True
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32
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33 For example, ``headers['content-encoding']`` will return the
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34 value of a ``'Content-Encoding'`` response header, regardless
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35 of how the header name was originally stored.
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36
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37 If the constructor, ``.update``, or equality comparison
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38 operations are given keys that have equal ``.lower()``s, the
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39 behavior is undefined.
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40
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41 """
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42 def __init__(self, data=None, **kwargs):
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43 self._store = dict()
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44 if data is None:
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45 data = {}
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46 self.update(data, **kwargs)
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47
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48 def __setitem__(self, key, value):
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49 # Use the lowercased key for lookups, but store the actual
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50 # key alongside the value.
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51 self._store[key.lower()] = (key, value)
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52
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53 def __getitem__(self, key):
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54 return self._store[key.lower()][1]
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55
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56 def __delitem__(self, key):
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57 del self._store[key.lower()]
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58
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59 def __iter__(self):
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60 return (casedkey for casedkey, mappedvalue in self._store.values())
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61
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62 def __len__(self):
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63 return len(self._store)
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64
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65 def lower_items(self):
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66 """Like iteritems(), but with all lowercase keys."""
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67 return (
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68 (lowerkey, keyval[1])
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69 for (lowerkey, keyval)
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70 in self._store.items()
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71 )
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72
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73 def __eq__(self, other):
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74 if isinstance(other, collections.Mapping):
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75 other = CaseInsensitiveDict(other)
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76 else:
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77 return NotImplemented
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78 # Compare insensitively
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79 return dict(self.lower_items()) == dict(other.lower_items())
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80
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81 # Copy is required
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82 def copy(self):
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83 return CaseInsensitiveDict(self._store.values())
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84
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85 def __repr__(self):
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86 return str(dict(self.items()))
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87
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88 class LookupDict(dict):
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89 """Dictionary lookup object."""
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90
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91 def __init__(self, name=None):
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92 self.name = name
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93 super(LookupDict, self).__init__()
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94
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95 def __repr__(self):
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96 return '<lookup \'%s\'>' % (self.name)
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97
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98 def __getitem__(self, key):
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99 # We allow fall-through here, so values default to None
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100
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101 return self.__dict__.get(key, None)
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102
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103 def get(self, key, default=None):
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104 return self.__dict__.get(key, default)