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comparison libiberty/choose-temp.c @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 77e2b8dfacca
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-1:000000000000 0:a06113de4d67
1 /* Utility to pick a temporary filename prefix.
2 Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
3
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.
9
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.
14
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., 51 Franklin Street - Fifth Floor,
18 Boston, MA 02110-1301, USA. */
19
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include <stdio.h> /* May get P_tmpdir. */
25 #ifdef HAVE_STDLIB_H
26 #include <stdlib.h>
27 #endif
28 #ifdef HAVE_STRING_H
29 #include <string.h>
30 #endif
31
32 #include "libiberty.h"
33 extern char *choose_tmpdir (void);
34
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)
39
40 /*
41
42 @deftypefn Extension char* choose_temp_base (void)
43
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}.
48
49 This function is provided for backwards compatibility only. Its use is
50 not recommended.
51
52 @end deftypefn
53
54 */
55
56 char *
57 choose_temp_base (void)
58 {
59 const char *base = choose_tmpdir ();
60 char *temp_filename;
61 int len;
62
63 len = strlen (base);
64 temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1);
65 strcpy (temp_filename, base);
66 strcpy (temp_filename + len, TEMP_FILE);
67
68 if (mktemp (temp_filename) == 0)
69 abort ();
70 return temp_filename;
71 }