66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
"""
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The temp module provides a NamedTemporaryFile that can be re-opened on any
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platform. Most platforms use the standard Python tempfile.TemporaryFile class,
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but MS Windows users are given a custom class.
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This is needed because in Windows NT, the default implementation of
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NamedTemporaryFile uses the O_TEMPORARY flag, and thus cannot be reopened [1].
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1: http://mail.python.org/pipermail/python-list/2005-December/359474.html
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"""
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import os
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import tempfile
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from django.core.files.utils import FileProxyMixin
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__all__ = ('NamedTemporaryFile', 'gettempdir',)
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if os.name == 'nt':
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class TemporaryFile(FileProxyMixin):
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"""
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Temporary file object constructor that works in Windows and supports
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reopening of the temporary file in windows.
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"""
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def __init__(self, mode='w+b', bufsize=-1, suffix='', prefix='',
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dir=None):
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fd, name = tempfile.mkstemp(suffix=suffix, prefix=prefix,
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dir=dir)
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self.name = name
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self.file = os.fdopen(fd, mode, bufsize)
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self.close_called = False
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# Because close can be called during shutdown
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# we need to cache os.unlink and access it
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# as self.unlink only
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unlink = os.unlink
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def close(self):
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if not self.close_called:
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self.close_called = True
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try:
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self.file.close()
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except (OSError, IOError):
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pass
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try:
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self.unlink(self.name)
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except (OSError):
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pass
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@property
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def closed(self):
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"""
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This attribute needs to be accessible in certain situations,
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because this class is supposed to mock the API of the class
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tempfile.NamedTemporaryFile in the Python standard library.
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"""
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return self.file.closed
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def __del__(self):
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self.close()
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NamedTemporaryFile = TemporaryFile
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else:
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NamedTemporaryFile = tempfile.NamedTemporaryFile
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gettempdir = tempfile.gettempdir
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