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"""
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':
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
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