mirror of
https://github.com/python/cpython.git
synced 2024-11-24 10:24:35 +08:00
60 lines
1.2 KiB
Python
60 lines
1.2 KiB
Python
# Temporary file name allocation
|
|
#
|
|
# XXX This tries to be not UNIX specific, but I don't know beans about
|
|
# how to choose a temp directory or filename on MS-DOS or other
|
|
# systems so it may have to be changed...
|
|
|
|
|
|
import os
|
|
|
|
|
|
# Parameters that the caller may set to override the defaults
|
|
|
|
tempdir = None
|
|
template = None
|
|
|
|
|
|
# Function to calculate the directory to use
|
|
|
|
def gettempdir():
|
|
global tempdir
|
|
if tempdir == None:
|
|
try:
|
|
tempdir = os.environ['TMPDIR']
|
|
except (KeyError, AttributeError):
|
|
if os.name == 'posix':
|
|
tempdir = '/usr/tmp' # XXX Why not /tmp?
|
|
else:
|
|
tempdir = os.getcwd() # XXX Is this OK?
|
|
return tempdir
|
|
|
|
|
|
# Function to calculate a prefix of the filename to use
|
|
|
|
def gettempprefix():
|
|
global template
|
|
if template == None:
|
|
if os.name == 'posix':
|
|
template = '@' + `os.getpid()` + '.'
|
|
else:
|
|
template = 'tmp' # XXX might choose a better one
|
|
return template
|
|
|
|
|
|
# Counter for generating unique names
|
|
|
|
counter = 0
|
|
|
|
|
|
# User-callable function to return a unique temporary file name
|
|
|
|
def mktemp():
|
|
global counter
|
|
dir = gettempdir()
|
|
pre = gettempprefix()
|
|
while 1:
|
|
counter = counter + 1
|
|
file = os.path.join(dir, pre + `counter`)
|
|
if not os.path.exists(file):
|
|
return file
|