Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 1 | # Temporary file name allocation |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 2 | # |
| 3 | # XXX This tries to be not UNIX specific, but I don't know beans about |
| 4 | # how to choose a temp directory or filename on MS-DOS or other |
| 5 | # systems so it may have to be changed... |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 6 | |
| 7 | |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 8 | import os |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 9 | |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 10 | |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 11 | # Parameters that the caller may set to override the defaults |
Guido van Rossum | cff3454 | 1992-01-14 18:31:56 +0000 | [diff] [blame] | 12 | |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 13 | tempdir = None |
| 14 | template = None |
| 15 | |
| 16 | |
| 17 | # Function to calculate the directory to use |
| 18 | |
| 19 | def gettempdir(): |
| 20 | global tempdir |
| 21 | if tempdir == None: |
| 22 | try: |
| 23 | tempdir = os.environ['TMPDIR'] |
| 24 | except (KeyError, AttributeError): |
| 25 | if os.name == 'posix': |
| 26 | tempdir = '/usr/tmp' # XXX Why not /tmp? |
| 27 | else: |
| 28 | tempdir = os.getcwd() # XXX Is this OK? |
| 29 | return tempdir |
| 30 | |
| 31 | |
| 32 | # Function to calculate a prefix of the filename to use |
| 33 | |
| 34 | def gettempprefix(): |
| 35 | global template |
| 36 | if template == None: |
| 37 | if os.name == 'posix': |
| 38 | template = '@' + `os.getpid()` + '.' |
| 39 | else: |
| 40 | template = 'tmp' # XXX might choose a better one |
| 41 | return template |
Guido van Rossum | cff3454 | 1992-01-14 18:31:56 +0000 | [diff] [blame] | 42 | |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 43 | |
Guido van Rossum | 4a3a41f | 1991-12-26 13:10:50 +0000 | [diff] [blame] | 44 | # Counter for generating unique names |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 45 | |
Guido van Rossum | 4a3a41f | 1991-12-26 13:10:50 +0000 | [diff] [blame] | 46 | counter = 0 |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 47 | |
| 48 | |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 49 | # User-callable function to return a unique temporary file name |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 50 | |
| 51 | def mktemp(): |
Guido van Rossum | 4a3a41f | 1991-12-26 13:10:50 +0000 | [diff] [blame] | 52 | global counter |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 53 | dir = gettempdir() |
| 54 | pre = gettempprefix() |
Guido van Rossum | eee9498 | 1991-11-12 15:38:08 +0000 | [diff] [blame] | 55 | while 1: |
Guido van Rossum | 41f9503 | 1992-03-31 19:02:01 +0000 | [diff] [blame] | 56 | counter = counter + 1 |
| 57 | file = os.path.join(dir, pre + `counter`) |
| 58 | if not os.path.exists(file): |
| 59 | return file |