71 lines
1.2 KiB
JavaScript
71 lines
1.2 KiB
JavaScript
'use strict';
|
|
|
|
var Enc = require('./bytes.js');
|
|
|
|
// To Hex
|
|
|
|
Enc.bufToHex = function(u8) {
|
|
var hex = [];
|
|
var i, h;
|
|
var len = u8.byteLength || u8.length;
|
|
|
|
for (i = 0; i < len; i += 1) {
|
|
h = u8[i].toString(16);
|
|
if (2 !== h.length) {
|
|
h = '0' + h;
|
|
}
|
|
hex.push(h);
|
|
}
|
|
|
|
return hex.join('').toLowerCase();
|
|
};
|
|
|
|
Enc.numToHex = function(d) {
|
|
d = d.toString(16); // .padStart(2, '0');
|
|
if (d.length % 2) {
|
|
return '0' + d;
|
|
}
|
|
return d;
|
|
};
|
|
|
|
Enc.strToHex = function(str) {
|
|
return Enc._binToHex(Enc.strToBin(str));
|
|
};
|
|
|
|
Enc._binToHex = function(bin) {
|
|
return bin
|
|
.split('')
|
|
.map(function(ch) {
|
|
var h = ch.charCodeAt(0).toString(16);
|
|
if (2 !== h.length) {
|
|
h = '0' + h;
|
|
}
|
|
return h;
|
|
})
|
|
.join('');
|
|
};
|
|
|
|
// From Hex
|
|
|
|
Enc.hexToBuf = function(hex) {
|
|
var arr = [];
|
|
hex.match(/.{2}/g).forEach(function(h) {
|
|
arr.push(parseInt(h, 16));
|
|
});
|
|
return 'undefined' !== typeof Uint8Array ? new Uint8Array(arr) : arr;
|
|
};
|
|
|
|
Enc.hexToStr = function(hex) {
|
|
return Enc.binToStr(_hexToBin(hex));
|
|
};
|
|
|
|
function _hexToBin(hex) {
|
|
return hex.replace(/([0-9A-F]{2})/gi, function(_, p1) {
|
|
return String.fromCharCode('0x' + p1);
|
|
});
|
|
}
|
|
|
|
Enc._hexToBin = _hexToBin;
|
|
|
|
module.exports = Enc;
|