source3/script/gaptab.awk

   1 BEGIN { hv["0"] =  0; hv["1"] =  1; hv["2"] =  2; hv["3"] =  3;
   2         hv["4"] =  4; hv["5"] =  5; hv["6"] =  6; hv["7"] =  7;
   3         hv["8"] =  8; hv["9"] =  9; hv["A"] = 10; hv["B"] = 11;
   4         hv["C"] = 12; hv["D"] = 13; hv["E"] = 14; hv["F"] = 15;
   5         hv["a"] = 10; hv["b"] = 11; hv["c"] = 12; hv["d"] = 13;
   6         hv["e"] = 14; hv["f"] = 15;
   7
   8         first = 0; last = 0; idx = 0; f = 0;
   9 }
  10
  11 function tonum(str)
  12 {
  13   num=0;
  14   cnt=1;
  15   while (cnt <= length(str)) {
  16     num *= 16;
  17     num += hv[substr(str,cnt,1)];
  18     ++cnt;
  19   }
  20   return num;
  21 }
  22
  23 function fmt(val)
  24 {
  25   if (f++ % 8 == 0)
  26     { printf ("\n  0x%02x,", val); }
  27   else
  28     { printf (" 0x%02x,", val); }
  29 }
  30
  31 {
  32   u = tonum($1); c = tonum($2);
  33
  34   if (u - last > 6)
  35     {
  36       if (last) { idx += last - first + 1; }
  37       first = u;
  38     }
  39   else
  40     {
  41       for (m = last+1; m < u; m++) { fmt(0); }
  42     }
  43
  44   fmt(c);
  45   last = u;
  46 }
  47
  48 END { print "" }