iota-ternary/dist/trytes-to-trits/version-4.js

Fast utility functions for conversion between trytes, trits and bytes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const TRYTES_TO_TRITS = [
    0, 0, 0,
    1, 0, 0,
    -1, 1, 0,
    0, 1, 0,
    1, 1, 0,
    -1, -1, 1,
    0, -1, 1,
    1, -1, 1,
    -1, 0, 1,
    0, 0, 1,
    1, 0, 1,
    -1, 1, 1,
    0, 1, 1,
    1, 1, 1,
    -1, -1, -1,
    0, -1, -1,
    1, -1, -1,
    -1, 0, -1,
    0, 0, -1,
    1, 0, -1,
    -1, 1, -1,
    0, 1, -1,
    1, 1, -1,
    -1, -1, 0,
    0, -1, 0,
    1, -1, 0,
    -1, 0, 0
];
function trytesToTrits(trytes) {
    var i, j, k, t;
    const size = trytes.length;
    const trits = new Array(size * 3);
    for (i = 0, j = 0; i < size; i += 1, j += 3) {
        t = trytes[i];
        k = t === '9' ? 0 : (t.charCodeAt(0) - 64) * 3;
        trits[j + 0] = TRYTES_TO_TRITS[k + 0];
        trits[j + 1] = TRYTES_TO_TRITS[k + 1];
        trits[j + 2] = TRYTES_TO_TRITS[k + 2];
    }
    return trits;
}
exports.trytesToTrits = trytesToTrits;