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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [libiberty/] [choose-temp.c] - Rev 320

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/* Utility to pick a temporary filename prefix.
   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
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
 
Libiberty is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.
 
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., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA.  */
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
 
#include <stdio.h>	/* May get P_tmpdir.  */
#include <sys/types.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#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)
 
/*
 
@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}.
 
This function is provided for backwards compatibility only.  Its use is
not recommended.
 
@end deftypefn
 
*/
 
char *
choose_temp_base (void)
{
  const char *base = choose_tmpdir ();
  char *temp_filename;
  int len;
 
  len = strlen (base);
  temp_filename = XNEWVEC (char, len + TEMP_FILE_LEN + 1);
  strcpy (temp_filename, base);
  strcpy (temp_filename + len, TEMP_FILE);
 
  if (mktemp (temp_filename) == 0)
    abort ();
  return temp_filename;
}
 

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