| 1 | n/a | """Response classes used by urllib. |
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| 2 | n/a | |
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| 3 | n/a | The base class, addbase, defines a minimal file-like interface, |
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| 4 | n/a | including read() and readline(). The typical response object is an |
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| 5 | n/a | addinfourl instance, which defines an info() method that returns |
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| 6 | n/a | headers and a geturl() method that returns the url. |
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| 7 | n/a | """ |
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| 8 | n/a | |
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| 9 | n/a | import tempfile |
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| 10 | n/a | |
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| 11 | n/a | __all__ = ['addbase', 'addclosehook', 'addinfo', 'addinfourl'] |
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| 12 | n/a | |
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| 13 | n/a | |
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| 14 | n/a | class addbase(tempfile._TemporaryFileWrapper): |
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| 15 | n/a | """Base class for addinfo and addclosehook. Is a good idea for garbage collection.""" |
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| 16 | n/a | |
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| 17 | n/a | # XXX Add a method to expose the timeout on the underlying socket? |
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| 18 | n/a | |
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| 19 | n/a | def __init__(self, fp): |
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| 20 | n/a | super(addbase, self).__init__(fp, '<urllib response>', delete=False) |
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| 21 | n/a | # Keep reference around as this was part of the original API. |
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| 22 | n/a | self.fp = fp |
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| 23 | n/a | |
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| 24 | n/a | def __repr__(self): |
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| 25 | n/a | return '<%s at %r whose fp = %r>' % (self.__class__.__name__, |
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| 26 | n/a | id(self), self.file) |
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| 27 | n/a | |
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| 28 | n/a | def __enter__(self): |
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| 29 | n/a | if self.fp.closed: |
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| 30 | n/a | raise ValueError("I/O operation on closed file") |
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| 31 | n/a | return self |
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| 32 | n/a | |
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| 33 | n/a | def __exit__(self, type, value, traceback): |
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| 34 | n/a | self.close() |
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| 35 | n/a | |
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| 36 | n/a | |
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| 37 | n/a | class addclosehook(addbase): |
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| 38 | n/a | """Class to add a close hook to an open file.""" |
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| 39 | n/a | |
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| 40 | n/a | def __init__(self, fp, closehook, *hookargs): |
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| 41 | n/a | super(addclosehook, self).__init__(fp) |
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| 42 | n/a | self.closehook = closehook |
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| 43 | n/a | self.hookargs = hookargs |
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| 44 | n/a | |
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| 45 | n/a | def close(self): |
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| 46 | n/a | try: |
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| 47 | n/a | closehook = self.closehook |
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| 48 | n/a | hookargs = self.hookargs |
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| 49 | n/a | if closehook: |
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| 50 | n/a | self.closehook = None |
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| 51 | n/a | self.hookargs = None |
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| 52 | n/a | closehook(*hookargs) |
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| 53 | n/a | finally: |
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| 54 | n/a | super(addclosehook, self).close() |
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| 55 | n/a | |
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| 56 | n/a | |
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| 57 | n/a | class addinfo(addbase): |
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| 58 | n/a | """class to add an info() method to an open file.""" |
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| 59 | n/a | |
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| 60 | n/a | def __init__(self, fp, headers): |
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| 61 | n/a | super(addinfo, self).__init__(fp) |
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| 62 | n/a | self.headers = headers |
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| 63 | n/a | |
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| 64 | n/a | def info(self): |
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| 65 | n/a | return self.headers |
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| 66 | n/a | |
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| 67 | n/a | |
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| 68 | n/a | class addinfourl(addinfo): |
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| 69 | n/a | """class to add info() and geturl() methods to an open file.""" |
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| 70 | n/a | |
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| 71 | n/a | def __init__(self, fp, headers, url, code=None): |
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| 72 | n/a | super(addinfourl, self).__init__(fp, headers) |
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| 73 | n/a | self.url = url |
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| 74 | n/a | self.code = code |
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| 75 | n/a | |
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| 76 | n/a | def getcode(self): |
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| 77 | n/a | return self.code |
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| 78 | n/a | |
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| 79 | n/a | def geturl(self): |
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| 80 | n/a | return self.url |
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