distr/util/tmpfile.c

   1 /*
   2  *  tmpfile -- open an unnamed temporary file
   3  *
   4  *  This is the ANSI C standard routine; we have hacks here because many
   5  *  compilers/systems do not have it yet.
   6  */
   7
   8 /* LINTLIBRARY */
   9
  10
  11 #include <stdio.h>
  12 #include "util.h"
  13
  14
  15 #ifdef UNIX
  16
  17 FILE *
  18 tmpfile()
  19 {
  20     FILE *fp;
  21     char *filename, *junk;
  22
  23     junk = strsav((char *)"/usr/tmp/cudd-XXXXXX");
  24     filename = mktemp(junk);
  25     if ((fp = fopen(filename, "w+")) == NULL) {
  26         FREE(junk);
  27         return NULL;
  28     }
  29     (void) unlink(filename);
  30     FREE(junk);
  31     return fp;
  32 }
  33
  34 #else
  35
  36 FILE *
  37 tmpfile()
  38 {
  39     return fopen("utiltmp", "w+");
  40 }
  41
  42 #endif