Blame iconvdata/gaptab.awk

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BEGIN { hv["0"] =  0; hv["1"] =  1; hv["2"] =  2; hv["3"] =  3;
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	hv["4"] =  4; hv["5"] =  5; hv["6"] =  6; hv["7"] =  7;
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	hv["8"] =  8; hv["9"] =  9; hv["A"] = 10; hv["B"] = 11;
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	hv["C"] = 12; hv["D"] = 13; hv["E"] = 14; hv["F"] = 15;
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	hv["a"] = 10; hv["b"] = 11; hv["c"] = 12; hv["d"] = 13;
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	hv["e"] = 14; hv["f"] = 15;
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	first = 0; last = 0; idx = 0; f = 0;
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}
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function tonum(str)
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{
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  num=0;
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  cnt=1;
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  while (cnt <= length(str)) {
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    num *= 16;
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    num += hv[substr(str,cnt,1)];
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    ++cnt;
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  }
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  return num;
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}
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function fmt(val)
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{
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  if (f++ % 8 == 0)
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    { printf ("\n  '\\x%02x',", val); }
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  else
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    { printf (" '\\x%02x',", val); }
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}
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{
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  u = tonum($1); c = tonum($2);
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  if (u - last > 6)
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    {
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      if (last) { idx += last - first + 1; }
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      first = u;
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    }
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  else
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    {
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      for (m = last+1; m < u; m++) { fmt(0); }
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    }
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  fmt(c);
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  last = u;
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}
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END { print "" }