/* XTime v. 1.00
   Copyright 1991 by Kurt R. Krueger and the Sirius Cybernetics Corp.
   This program is freely distributable in an unmodified form. */

#define XFER_RATE 232

extern long atol();
extern int atoi();
char *param, k[] = "-k", r[] = "-r", r_string[4];
int n = 1, i = 0, r_len, mins, min_xfer = 5L;
int x_rate = 232;
long secs, byte;

main (argc, argv)

int argc;
char *argv[];

{
  if (argc == 1)
    {
    help();
    exit(0);
    }
  byte = atol(argv[argc-1]);
  if (byte == 0)
    {
    help();
    exit(0);
    }
  param = argv[n];
  while (param[0] == '-')
    {
    if (strcmp(argv[n], k) == 0)
      byte *= 1000;

/* Extract the number after -r if -r exists */
    if (strncmp(argv[n], r, 2) == 0)   /* if <0 then -r was found */
      {
      r_len = strlen(argv[n]) - 2;  /* len of the value after -r */
      for (i = 0; i < r_len; i++)
        r_string[i] = argv[n][i+2];  /* concatenate a string */
      x_rate = atoi(r_string);
      if (x_rate == 0)
        x_rate = XFER_RATE;
      }

    param = argv[n++];
    }
  secs = byte / x_rate;
  mins = secs / 60;
  secs = secs - (mins * 60);
  if (secs <= min_xfer)
    secs = min_xfer;
  printf ("\nAt a rate of %d cps, the transfer will take:\n", x_rate);
  printf ("%d m %ld s\n", mins, secs);
}

help()
  {
  printf("\nXTime v. 1.00\n");
  printf("Copyright 1991 by Kurt R. Krueger\n\n");
  printf("Syntax: XTime [-k] [-r<cps>] <file size in bytes>\n\n");
  printf("-k: file size is in K\n");
  printf("-r: Assumed transfer rate is r characters/sec\n\n");
  }