qortal-ui/crypto/api/deps/Base58.js

// Generated by CoffeeScript 1.8.0

// == Changed for ES6 modules == //
const Base58 = {};

const ALPHABET = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";

const ALPHABET_MAP = {};

let i = 0;

while (i < ALPHABET.length) {
	ALPHABET_MAP[ALPHABET.charAt(i)] = i;
	i++;
}

Base58.encode = function (buffer) {
	buffer = new Uint8Array(buffer);
	var carry, digits, j;
	if (buffer.length === 0) {
		return "";
	}
	i = void 0;
	j = void 0;
	digits = [0];
	i = 0;
	while (i < buffer.length) {
		j = 0;
		while (j < digits.length) {
			digits[j] <<= 8;
			j++;
		}
		digits[0] += buffer[i];
		carry = 0;
		j = 0;
		while (j < digits.length) {
			digits[j] += carry;
			carry = (digits[j] / 58) | 0;
			digits[j] %= 58;
			++j;
		}
		while (carry) {
			digits.push(carry % 58);
			carry = (carry / 58) | 0;
		}
		i++;
	}
	i = 0;
	while (buffer[i] === 0 && i < buffer.length - 1) {
		digits.push(0);
		i++;
	}
	return digits.reverse().map(function (digit) {
		return ALPHABET[digit];
	}).join("");
};

Base58.decode = function (string) {
	var bytes, c, carry, j;
	if (string.length === 0) {
		return new (typeof Uint8Array !== "undefined" && Uint8Array !== null ? Uint8Array : Buffer)(0);
	}
	i = void 0;
	j = void 0;
	bytes = [0];
	i = 0;
	while (i < string.length) {
		c = string[i];
		if (!(c in ALPHABET_MAP)) {
			throw "Base58.decode received unacceptable input. Character '" + c + "' is not in the Base58 alphabet.";
		}
		j = 0;
		while (j < bytes.length) {
			bytes[j] *= 58;
			j++;
		}
		bytes[0] += ALPHABET_MAP[c];
		carry = 0;
		j = 0;
		while (j < bytes.length) {
			bytes[j] += carry;
			carry = bytes[j] >> 8;
			bytes[j] &= 0xff;
			++j;
		}
		while (carry) {
			bytes.push(carry & 0xff);
			carry >>= 8;
		}
		i++;
	}
	i = 0;
	while (string[i] === "1" && i < string.length - 1) {
		bytes.push(0);
		i++;
	}
	return new (typeof Uint8Array !== "undefined" && Uint8Array !== null ? Uint8Array : Buffer)(bytes.reverse());
};

// == Changed for ES6 modules == //
export default Base58;