#include <stdio.h>
#include <ctype.h>
#include <malloc.h>
#include <string.h>


char asci[] = "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F404142434445464748494A4B4C4D4E4F505152535455565758595A5B5C5D5E5F606162636465666768696A6B6C6D6E6F707172737475767778797A7B7C7D7E";


char
chr2seg
     (dec, chr)
       int dec;
       char chr;
{
  /* looks up one character on asci table */

  chr = asci[dec];
  return chr;
}


int
hex2asci
   (hx)
      char *hx;
{

   int r, j, k;

  // cmp asci tble every 2 chars
  for( k=0; k<127; k++) {

    j = k*2; // nib's are real.. they eat nybles
    r = j+1;

   char nib[1] = "00";

    char m = chr2seg(j, m);
    char a = chr2seg(r, a);
    char t = hx[0];
    char h = hx[1];

    nib[0] = m;
    nib[1] = a;

    if( m == t ) {
       if( a == h ) {
          return k +2;
       }
     }

  }

  return 129;
}

void
main
  (void)
{
   char *filename = "vba.hex";
   FILE* fh;
   fh = fopen(filename, "r");

   const size_t line_size = 3;
   char* line = malloc(line_size);

   while (fgets(line, line_size, fh) != NULL)  {

   printf("%sn", line);
   int r = hex2asci(line);
   /*!!! FIXME!!!! r should be changing, in this case incrementing by one with each line */

   printf("we got %dn", r);

  }
  free(line);

  return;
}