+
−"""
+
−The temp module provides a NamedTemporaryFile that can be re-opened on any
+
−platform. Most platforms use the standard Python tempfile.TemporaryFile class,
+
−but MS Windows users are given a custom class.
+
−
+
−This is needed because in Windows NT, the default implementation of
+
−NamedTemporaryFile uses the O_TEMPORARY flag, and thus cannot be reopened [1].
+
−
+
−1: http://mail.python.org/pipermail/python-list/2005-December/359474.html
+
−"""
+
−
+
−import os
+
−import tempfile
+
−
+
−__all__ = ('NamedTemporaryFile', 'gettempdir',)
+
−
+
−if os.name == 'nt' and hasattr(os, 'unlink') and hasattr(os, 'fdopen'):
+
−    class TemporaryFile(object):
+
−        """
+
−        Temporary file object constructor that works in Windows and supports
+
−        reopening of the temporary file in windows.
+
−        """
+
−        def __init__(self, mode='w+b', bufsize=-1, suffix='', prefix='',
+
−                dir=None):
+
−            fd, name = tempfile.mkstemp(suffix=suffix, prefix=prefix,
+
−                                          dir=dir)
+
−            self.name = name
+
−            self.file = os.fdopen(fd, mode, bufsize)
+
−            self.close_called = False
+
−
+
−        # Because close can be called during shutdown
+
−        # we need to cache os.unlink and access it
+
−        # as self.unlink only
+
−        unlink = os.unlink
+
−
+
−        def close(self):
+
−            if not self.close_called:
+
−                self.close_called = True
+
−                try:
+
−                    self.file.close()
+
−                except (OSError, IOError):
+
−                    pass
+
−                try:
+
−                    self.unlink(self.name)
+
−                except (OSError):
+
−                    pass
+
−
+
−        def __del__(self):
+
−            self.close()
+
−
+
−        def read(self, *args):          return self.file.read(*args)
+
−        def seek(self, offset):         return self.file.seek(offset)
+
−        def write(self, s):             return self.file.write(s)
+
−        def __iter__(self):             return iter(self.file)
+
−        def readlines(self, size=None): return self.file.readlines(size)
+
−        def xreadlines(self):           return self.file.xreadlines()
+
−
+
−    NamedTemporaryFile = TemporaryFile
+
−else:
+
−    NamedTemporaryFile = tempfile.NamedTemporaryFile
+
−
+
−gettempdir = tempfile.gettempdir