1
/* Utility to pick a temporary filename prefix.
2
Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
4
This file is part of the libiberty library.
5
Libiberty is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Library General Public
7
License as published by the Free Software Foundation; either
8
version 2 of the License, or (at your option) any later version.
10
Libiberty is distributed in the hope that it will be useful,
11
but WITHOUT ANY WARRANTY; without even the implied warranty of
12
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
Library General Public License for more details.
15
You should have received a copy of the GNU Library General Public
16
License along with libiberty; see the file COPYING.LIB. If not,
17
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18
Boston, MA 02111-1307, USA. */
24
#include <stdio.h> /* May get P_tmpdir. */
32
#include "libiberty.h"
33
extern char *choose_tmpdir PARAMS ((void));
35
/* Name of temporary file.
36
mktemp requires 6 trailing X's. */
37
#define TEMP_FILE "ccXXXXXX"
38
#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
42
@deftypefn Extension char* choose_temp_base (void)
44
Return a prefix for temporary file names or @code{NULL} if unable to
45
find one. The current directory is chosen if all else fails so the
46
program is exited if a temporary directory can't be found (@code{mktemp}
47
fails). The buffer for the result is obtained with @code{xmalloc}.
49
This function is provided for backwards compatability only. Its use is
59
const char *base = choose_tmpdir ();
64
temp_filename = xmalloc (len + TEMP_FILE_LEN + 1);
65
strcpy (temp_filename, base);
66
strcpy (temp_filename + len, TEMP_FILE);
68
mktemp (temp_filename);
69
if (strlen (temp_filename) == 0)