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comparison planemo/lib/python3.7/site-packages/future/backports/urllib/response.py @ 0:d30785e31577 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:18:57 -0400
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-1:000000000000 0:d30785e31577
1 """Response classes used by urllib.
2
3 The base class, addbase, defines a minimal file-like interface,
4 including read() and readline(). The typical response object is an
5 addinfourl instance, which defines an info() method that returns
6 headers and a geturl() method that returns the url.
7 """
8 from __future__ import absolute_import, division, unicode_literals
9 from future.builtins import object
10
11 class addbase(object):
12 """Base class for addinfo and addclosehook."""
13
14 # XXX Add a method to expose the timeout on the underlying socket?
15
16 def __init__(self, fp):
17 # TODO(jhylton): Is there a better way to delegate using io?
18 self.fp = fp
19 self.read = self.fp.read
20 self.readline = self.fp.readline
21 # TODO(jhylton): Make sure an object with readlines() is also iterable
22 if hasattr(self.fp, "readlines"):
23 self.readlines = self.fp.readlines
24 if hasattr(self.fp, "fileno"):
25 self.fileno = self.fp.fileno
26 else:
27 self.fileno = lambda: None
28
29 def __iter__(self):
30 # Assigning `__iter__` to the instance doesn't work as intended
31 # because the iter builtin does something like `cls.__iter__(obj)`
32 # and thus fails to find the _bound_ method `obj.__iter__`.
33 # Returning just `self.fp` works for built-in file objects but
34 # might not work for general file-like objects.
35 return iter(self.fp)
36
37 def __repr__(self):
38 return '<%s at %r whose fp = %r>' % (self.__class__.__name__,
39 id(self), self.fp)
40
41 def close(self):
42 if self.fp:
43 self.fp.close()
44 self.fp = None
45 self.read = None
46 self.readline = None
47 self.readlines = None
48 self.fileno = None
49 self.__iter__ = None
50 self.__next__ = None
51
52 def __enter__(self):
53 if self.fp is None:
54 raise ValueError("I/O operation on closed file")
55 return self
56
57 def __exit__(self, type, value, traceback):
58 self.close()
59
60 class addclosehook(addbase):
61 """Class to add a close hook to an open file."""
62
63 def __init__(self, fp, closehook, *hookargs):
64 addbase.__init__(self, fp)
65 self.closehook = closehook
66 self.hookargs = hookargs
67
68 def close(self):
69 if self.closehook:
70 self.closehook(*self.hookargs)
71 self.closehook = None
72 self.hookargs = None
73 addbase.close(self)
74
75 class addinfo(addbase):
76 """class to add an info() method to an open file."""
77
78 def __init__(self, fp, headers):
79 addbase.__init__(self, fp)
80 self.headers = headers
81
82 def info(self):
83 return self.headers
84
85 class addinfourl(addbase):
86 """class to add info() and geturl() methods to an open file."""
87
88 def __init__(self, fp, headers, url, code=None):
89 addbase.__init__(self, fp)
90 self.headers = headers
91 self.url = url
92 self.code = code
93
94 def info(self):
95 return self.headers
96
97 def getcode(self):
98 return self.code
99
100 def geturl(self):
101 return self.url
102
103 del absolute_import, division, unicode_literals, object