walnut.js/lib/com.daplie.walnut/bower_components/unibabel/unibabel.hex.js

47 lines
802 B
JavaScript

(function () {
'use strict';
function bufferToHex(arr) {
var i;
var len;
var hex = '';
var c;
for (i = 0, len = arr.length; i < len; i += 1) {
c = arr[i].toString(16);
if (c.length < 2) {
c = '0' + c;
}
hex += c;
}
return hex;
}
function hexToBuffer(hex) {
// TODO use Uint8Array or ArrayBuffer or DataView
var i;
var byteLen = hex.length / 2;
var arr;
var j = 0;
if (byteLen !== parseInt(byteLen, 10)) {
throw new Error("Invalid hex length '" + hex.length + "'");
}
arr = new Uint8Array(byteLen);
for (i = 0; i < byteLen; i += 1) {
arr[i] = parseInt(hex[j] + hex[j + 1], 16);
j += 2;
}
return arr;
}
// Hex Convenience Functions
window.Unibabel.hexToBuffer = hexToBuffer;
window.Unibabel.bufferToHex = bufferToHex;
}());