| | """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. |
| | """ |
| |
|
| | import tempfile |
| |
|
| | __all__ = ['addbase', 'addclosehook', 'addinfo', 'addinfourl'] |
| |
|
| |
|
| | class addbase(tempfile._TemporaryFileWrapper): |
| | """Base class for addinfo and addclosehook. Is a good idea for garbage collection.""" |
| |
|
| | |
| |
|
| | def __init__(self, fp): |
| | super(addbase, self).__init__(fp, '<urllib response>', delete=False) |
| | |
| | self.fp = fp |
| |
|
| | def __repr__(self): |
| | return '<%s at %r whose fp = %r>' % (self.__class__.__name__, |
| | id(self), self.file) |
| |
|
| | def __enter__(self): |
| | if self.fp.closed: |
| | 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): |
| | super(addclosehook, self).__init__(fp) |
| | self.closehook = closehook |
| | self.hookargs = hookargs |
| |
|
| | def close(self): |
| | try: |
| | closehook = self.closehook |
| | hookargs = self.hookargs |
| | if closehook: |
| | self.closehook = None |
| | self.hookargs = None |
| | closehook(*hookargs) |
| | finally: |
| | super(addclosehook, self).close() |
| |
|
| |
|
| | class addinfo(addbase): |
| | """class to add an info() method to an open file.""" |
| |
|
| | def __init__(self, fp, headers): |
| | super(addinfo, self).__init__(fp) |
| | self.headers = headers |
| |
|
| | def info(self): |
| | return self.headers |
| |
|
| |
|
| | class addinfourl(addinfo): |
| | """class to add info() and geturl() methods to an open file.""" |
| |
|
| | def __init__(self, fp, headers, url, code=None): |
| | super(addinfourl, self).__init__(fp, headers) |
| | self.url = url |
| | self.code = code |
| |
|
| | @property |
| | def status(self): |
| | return self.code |
| |
|
| | def getcode(self): |
| | return self.code |
| |
|
| | def geturl(self): |
| | return self.url |
| |
|