93 lines
2.7 KiB
Python
93 lines
2.7 KiB
Python
"""Response classes used by urllib.
|
|
|
|
The base class, addbase, defines a minimal file-like interface,
|
|
including read() and readline(). The typical response object is an
|
|
addinfourl instance, which defines an info() method that returns
|
|
headers and a geturl() method that returns the url.
|
|
"""
|
|
|
|
class addbase(object):
|
|
"""Base class for addinfo and addclosehook."""
|
|
|
|
# XXX Add a method to expose the timeout on the underlying socket?
|
|
|
|
def __init__(self, fp):
|
|
# TODO(jhylton): Is there a better way to delegate using io?
|
|
self.fp = fp
|
|
self.read = self.fp.read
|
|
self.readline = self.fp.readline
|
|
# TODO(jhylton): Make sure an object with readlines() is also iterable
|
|
if hasattr(self.fp, "readlines"):
|
|
self.readlines = self.fp.readlines
|
|
if hasattr(self.fp, "fileno"):
|
|
self.fileno = self.fp.fileno
|
|
else:
|
|
self.fileno = lambda: None
|
|
if hasattr(self.fp, "__iter__"):
|
|
self.__iter__ = self.fp.__iter__
|
|
if hasattr(self.fp, "__next__"):
|
|
self.__next__ = self.fp.__next__
|
|
|
|
def __repr__(self):
|
|
return '<%s at %r whose fp = %r>' % (self.__class__.__name__,
|
|
id(self), self.fp)
|
|
|
|
def close(self):
|
|
self.read = None
|
|
self.readline = None
|
|
self.readlines = None
|
|
self.fileno = None
|
|
if self.fp: self.fp.close()
|
|
self.fp = None
|
|
|
|
def __enter__(self):
|
|
if self.fp is None:
|
|
raise ValueError("I/O operation on closed file")
|
|
return self
|
|
|
|
def __exit__(self, type, value, traceback):
|
|
self.close()
|
|
|
|
class addclosehook(addbase):
|
|
"""Class to add a close hook to an open file."""
|
|
|
|
def __init__(self, fp, closehook, *hookargs):
|
|
addbase.__init__(self, fp)
|
|
self.closehook = closehook
|
|
self.hookargs = hookargs
|
|
|
|
def close(self):
|
|
addbase.close(self)
|
|
if self.closehook:
|
|
self.closehook(*self.hookargs)
|
|
self.closehook = None
|
|
self.hookargs = None
|
|
|
|
class addinfo(addbase):
|
|
"""class to add an info() method to an open file."""
|
|
|
|
def __init__(self, fp, headers):
|
|
addbase.__init__(self, fp)
|
|
self.headers = headers
|
|
|
|
def info(self):
|
|
return self.headers
|
|
|
|
class addinfourl(addbase):
|
|
"""class to add info() and geturl() methods to an open file."""
|
|
|
|
def __init__(self, fp, headers, url, code=None):
|
|
addbase.__init__(self, fp)
|
|
self.headers = headers
|
|
self.url = url
|
|
self.code = code
|
|
|
|
def info(self):
|
|
return self.headers
|
|
|
|
def getcode(self):
|
|
return self.code
|
|
|
|
def geturl(self):
|
|
return self.url
|