haruo31/java-bytearray.md

## java-bytearray.md

      
    Raw
  

              java-bytearray.md
            
          
    The script converts 8bit hex string into integer list for java bytes array

e.g.

0x94, 0x0a, 0xc0 -> -0x6c, 0x0a, -0x40
94 0A C0 -> -0x6c, 0x0a, -0x40

this script uses Array.prototype.map().
input
<textarea id="input">
</textarea>
GO
output
<textarea id="output">
</textarea>
<script>
function calc() {
  var input = document.getElementById("input").value;
  var out = document.getElementById("output");
  var radix = input.match(/[a-f]|0x/i) ? 16 : 10;
  out.value = input.split(/[,\s]\s*/).map(function (nstr) {
    var n = parseInt(nstr, radix);
    if (n > 127) {
      n -= 256;
    }
    return n.toString(16);
  }).join(", ")
  .replace(/([0-9a-f]+)/gi, '0x$1')
  .replace(/0x([0-9a-f]),/gi, '0x0$1,')
  .replace(/(([^,]*,){10}) */g, '$1\n');
}
</script>