libf2c/libI77/close.c

   1 #include "config.h"
   2 #include "f2c.h"
   3 #include "fio.h"
   4
   5 #undef abs
   6 #undef min
   7 #undef max
   8 #include <stdlib.h>
   9 #ifdef NON_UNIX_STDIO
  10 #ifndef unlink
  11 #define unlink remove
  12 #endif
  13 #else
  14 #if defined (MSDOS) && !defined (GO32)
  15 #include "io.h"
  16 #else
  17 extern int unlink (const char *);
  18 #endif
  19 #endif
  20
  21 integer
  22 f_clos (cllist * a)
  23 {
  24   unit *b;
  25
  26   if (f__init & 2)
  27     f__fatal (131, "I/O recursion");
  28   if (a->cunit >= MXUNIT)
  29     return (0);
  30   b = &f__units[a->cunit];
  31   if (b->ufd == NULL)
  32     goto done;
  33   if (b->uscrtch == 1)
  34     goto Delete;
  35   if (!a->csta)
  36     goto Keep;
  37   switch (*a->csta)
  38     {
  39     default:
  40     Keep:
  41     case 'k':
  42     case 'K':
  43       if (b->uwrt == 1)
  44         t_runc ((alist *) a);
  45       if (b->ufnm)
  46         {
  47           fclose (b->ufd);
  48           free (b->ufnm);
  49         }
  50       break;
  51     case 'd':
  52     case 'D':
  53     Delete:
  54       fclose (b->ufd);
  55       if (b->ufnm)
  56         {
  57           unlink (b->ufnm);
  58           /*SYSDEP*/ free (b->ufnm);
  59         }
  60     }
  61   b->ufd = NULL;
  62 done:
  63   b->uend = 0;
  64   b->ufnm = NULL;
  65   return (0);
  66 }
  67
  68 void
  69 f_exit (void)
  70 {
  71   int i;
  72   static cllist xx;
  73   if (!(f__init & 1))
  74     return;                     /* Not initialized, so no open units. */
  75   /* I/O no longer in progress.  If, during an I/O operation (such
  76      as waiting for the user to enter a line), there is an
  77      interrupt (such as ^C to stop the program on a UNIX system),
  78      f_exit() is called, but there is no longer any I/O in
  79      progress.  Without turning off this flag, f_clos() would
  80      think that there is an I/O recursion in this circumstance. */
  81   f__init &= ~2;
  82   if (!xx.cerr)
  83     {
  84       xx.cerr = 1;
  85       xx.csta = NULL;
  86       for (i = 0; i < MXUNIT; i++)
  87         {
  88           xx.cunit = i;
  89           (void) f_clos (&xx);
  90         }
  91     }
  92 }
  93 int
  94 G77_flush_0 (void)
  95 {
  96   int i;
  97   for (i = 0; i < MXUNIT; i++)
  98     if (f__units[i].ufd != NULL && f__units[i].uwrt)
  99       fflush (f__units[i].ufd);
 100   return 0;
 101 }