/*********************************************************/
/*   program 26: hexadecimal dump                        */
/*********************************************************/

#include "sys/file.h"

main (argc,argv)
  long   argc;
  char **argv;
  {
  long fp;
  long addr,cnt,m,n;
  unsigned char buf[20];
  unsigned char *b;

  if (argc < 2)
    {
    printf ("Usage: dumpit <file>\n");
    }
  else
    {
    printf("Dump file: %s\n",argv[1]);
    fp = open(argv[1],O_RDONLY);
    if (fp <= 0)
      {
      printf("Cannot open file %s\n",argv[1]);
      }
    else
      {
      addr = 0;
      cnt = 1;
      while (cnt > 0)
        {
        cnt = read(fp,buf,16);
        b = buf;
        printf ("%5d (%08lx)  ",addr,addr);
        addr = addr + 16;
        for (m = 0; m < 4; m++)
          {
          for (n = 0; n < 4; n++)
            {
            printf ("%02x",*b++);
            }
          printf (" ");
          }
        printf("  ");
        for (n = 0; n < 16; n++)
          {
          if ((buf[n] < 32) || (buf[n] > 126))
            printf("%c",'.');
          else
            printf("%c",buf[n]);
          }
        printf("\n");
        }
      close(fp);
      printf ("End of dump\n");
      }
    }
}