tronewb
Version:
JavaScript SDK that encapsulates the TRON HTTP API
64 lines • 1.89 kB
JavaScript
const ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz';
const ALPHABET_MAP = {};
for (let i = 0; i < ALPHABET.length; i++)
ALPHABET_MAP[ALPHABET.charAt(i)] = i;
const BASE = 58;
export function encode58(buffer) {
if (buffer.length === 0)
return '';
let i;
let j;
const digits = [0];
for (i = 0; i < buffer.length; i++) {
for (j = 0; j < digits.length; j++)
digits[j] <<= 8;
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
digits[0] += buffer[i];
let carry = 0;
for (j = 0; j < digits.length; ++j) {
digits[j] += carry;
carry = (digits[j] / BASE) | 0;
digits[j] %= BASE;
}
while (carry) {
digits.push(carry % BASE);
carry = (carry / BASE) | 0;
}
}
for (i = 0; buffer[i] === 0 && i < buffer.length - 1; i++)
digits.push(0);
return digits
.reverse()
.map((digit) => ALPHABET[digit])
.join('');
}
export function decode58(string) {
if (string.length === 0)
return [];
let i;
let j;
const bytes = [0];
for (i = 0; i < string.length; i++) {
const c = string[i];
if (!(c in ALPHABET_MAP))
throw new Error('Non-base58 character');
for (j = 0; j < bytes.length; j++)
bytes[j] *= BASE;
bytes[0] += ALPHABET_MAP[c];
let carry = 0;
for (j = 0; j < bytes.length; ++j) {
bytes[j] += carry;
carry = bytes[j] >> 8;
bytes[j] &= 0xff;
}
while (carry) {
bytes.push(carry & 0xff);
carry >>= 8;
}
}
for (i = 0; string[i] === '1' && i < string.length - 1; i++)
bytes.push(0);
return bytes.reverse();
}
//# sourceMappingURL=base58.js.map