/* hexdump.c */

/* Produce a dump in hexadecimal and ASCII of the standard input */

#include <stdlib.h>
#include <stdio.h>

void dumpline(
unsigned int  loc,
unsigned char values[],
int count)
{
   int num = 0;

   fprintf(stdout, "%8x - ", loc);
   while (num < count)
   {
      fprintf(stdout, "%02x ", values[num]);
      num = num + 1;
   }

   fprintf(stdout, "\n          ", loc);
   num = 0;
   while (num < count)
   {
      if ((values[num] >= 32) && (values[num] < 127))
         fprintf(stdout, "%02c ", values[num]);
   /* else if ((values[num] > 0) && (values[num] < 27))
         fprintf(stdout, "\\%c ", values[num] + 0x60);  */
      else
         fprintf(stdout, "   ");
      num = num + 1;
   }
   fprintf(stdout, "\n", loc);
}

int main()
{
   unsigned int loc = 0;
   unsigned char bytes[16];
   int howmany;

   howmany = fread(bytes, 1, 16, stdin);
   while (howmany > 0)
   {
      dumpline(loc, bytes, howmany);
      loc = loc +  howmany;
      howmany = fread(bytes, 1, 16, stdin);
   }
}