/* Utility to pick a temporary filename prefix.
- Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of the libiberty library.
Libiberty is free software; you can redistribute it and/or
You should have received a copy of the GNU Library General Public
License along with libiberty; see the file COPYING.LIB. If not,
-write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
+Boston, MA 02110-1301, USA. */
-/* This file exports one function: choose_temp_base. */
-
-/* This file lives in at least two places: libiberty and gcc.
- Don't change one without the other. */
-
-#ifdef IN_GCC
+#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#ifdef HAVE_SYS_FILE_H
-#include <sys/types.h>
-#include <sys/file.h> /* May get R_OK, etc. on some systems. */
-#endif
-
-#ifndef R_OK
-#define R_OK 4
-#define W_OK 2
-#define X_OK 1
-#endif
-
#include <stdio.h> /* May get P_tmpdir. */
-
-#ifdef IN_GCC
-#include "gansidecl.h"
-extern char *xmalloc ();
-#else
-#include "ansidecl.h"
-#include "libiberty.h"
-#if defined (__MSDOS__) || defined (_WIN32)
-#define DIR_SEPARATOR '\\'
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
#endif
-
-#ifndef DIR_SEPARATOR
-#define DIR_SEPARATOR '/'
+#ifdef HAVE_STRING_H
+#include <string.h>
#endif
-/* On MSDOS, write temp files in current dir
- because there's no place else we can expect to use. */
-/* ??? Although the current directory is tried as a last resort,
- this is left in so that on MSDOS it is preferred to /tmp on the
- off chance that someone requires this, since that was the previous
- behaviour. */
-#ifdef __MSDOS__
-#ifndef P_tmpdir
-#define P_tmpdir "."
-#endif
-#endif
+#include "libiberty.h"
+extern char *choose_tmpdir (void);
/* Name of temporary file.
mktemp requires 6 trailing X's. */
#define TEMP_FILE "ccXXXXXX"
+#define TEMP_FILE_LEN (sizeof(TEMP_FILE) - 1)
-/* Subroutine of choose_temp_base.
- If BASE is non-NULL, return it.
- Otherwise it checks if DIR is a usable directory.
- If success, DIR is returned.
- Otherwise NULL is returned. */
+/*
-static char *
-try (dir, base)
- char *dir, *base;
-{
- if (base != 0)
- return base;
- if (dir != 0
- && access (dir, R_OK | W_OK | X_OK) == 0)
- return dir;
- return 0;
-}
+@deftypefn Extension char* choose_temp_base (void)
+
+Return a prefix for temporary file names or @code{NULL} if unable to
+find one. The current directory is chosen if all else fails so the
+program is exited if a temporary directory can't be found (@code{mktemp}
+fails). The buffer for the result is obtained with @code{xmalloc}.
-/* Return a prefix for temporary file names or NULL if unable to find one.
- The current directory is chosen if all else fails so the program is
- exited if a temporary directory can't be found (mktemp fails).
- The buffer for the result is obtained with xmalloc. */
+This function is provided for backwards compatibility only. Its use is
+not recommended.
+
+@end deftypefn
+
+*/
char *
-choose_temp_base ()
+choose_temp_base (void)
{
- char *base = 0;
+ const char *base = choose_tmpdir ();
char *temp_filename;
int len;
- static char tmp[] = { DIR_SEPARATOR, 't', 'm', 'p', 0 };
- static char usrtmp[] = { DIR_SEPARATOR, 'u', 's', 'r', DIR_SEPARATOR, 't', 'm', 'p', 0 };
-
-#ifndef MPW
- base = try (getenv ("TMPDIR"), base);
- base = try (getenv ("TMP"), base);
- base = try (getenv ("TEMP"), base);
-
-#ifdef P_tmpdir
- base = try (P_tmpdir, base);
-#endif
-
- /* Try /usr/tmp, then /tmp. */
- base = try (usrtmp, base);
- base = try (tmp, base);
-
- /* If all else fails, use the current directory! */
- if (base == 0)
- base = ".";
-
-#else /* MPW */
- base = ":";
-#endif
len = strlen (base);
- temp_filename = xmalloc (len + 1 /*DIR_SEPARATOR*/
- + strlen (TEMP_FILE) + 1);
+ temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1);
strcpy (temp_filename, base);
-
-#ifndef MPW
- if (len != 0
- && temp_filename[len-1] != '/'
- && temp_filename[len-1] != DIR_SEPARATOR)
- temp_filename[len++] = DIR_SEPARATOR;
-#else /* MPW */
- if (temp_filename[len-1] != ':')
- temp_filename[len++] = ':';
-#endif /* MPW */
strcpy (temp_filename + len, TEMP_FILE);
- mktemp (temp_filename);
- if (strlen (temp_filename) == 0)
+ if (mktemp (temp_filename) == 0)
abort ();
return temp_filename;
}
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