iota-ternary/dist/bytes-to-trits/version-3.js

Fast utility functions for conversion between trytes, trits and bytes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const BYTES_TO_TRITS = new Array(243 * 5);
bytesToTritsLoop: for (let i = 0, trits = [0, 0, 0, 0, 0]; i < 243; ++i) {
    for (let j = 0; j < 5; ++j) {
        BYTES_TO_TRITS[i * 5 + j] = trits[j];
    }
    for (let j = 0; j < 5; ++j) {
        if (++trits[j] > 1) {
            trits[j] = -1;
        }
        else {
            continue bytesToTritsLoop;
        }
    }
}
function bytesToTrits(bytes) {
    var i, j, v, t;
    const size = bytes.byteLength;
    const trits = new Array(size * 5);
    for (i = 0; i < size; ++i) {
        v = bytes.readInt8(i);
        if (v < 0) {
            v += 243;
        }
        if (v > 243 || v < 0) {
            throw new Error(`Incorrect byte ${bytes.readInt8(i)}!`);
        }
        trits[i * 5 + 0] = BYTES_TO_TRITS[v * 5 + 0];
        trits[i * 5 + 1] = BYTES_TO_TRITS[v * 5 + 1];
        trits[i * 5 + 2] = BYTES_TO_TRITS[v * 5 + 2];
        trits[i * 5 + 3] = BYTES_TO_TRITS[v * 5 + 3];
        trits[i * 5 + 4] = BYTES_TO_TRITS[v * 5 + 4];
    }
    return trits;
}
exports.bytesToTrits = bytesToTrits;