lotus-sdk/dist/lib/bitcore/util/base32.js

Central repository for several classes of tools for integrating with, and building for, the Lotusia ecosystem

import { Preconditions } from './preconditions.js';
const CHARSET = 'qpzry9x8gf2tvdw0s3jn54khce6mua7l';
const CHARSET_INVERSE_INDEX = {
    'q': 0,
    'p': 1,
    'z': 2,
    'r': 3,
    'y': 4,
    '9': 5,
    'x': 6,
    '8': 7,
    'g': 8,
    'f': 9,
    '2': 10,
    't': 11,
    'v': 12,
    'd': 13,
    'w': 14,
    '0': 15,
    's': 16,
    '3': 17,
    'j': 18,
    'n': 19,
    '5': 20,
    '4': 21,
    'k': 22,
    'h': 23,
    'c': 24,
    'e': 25,
    '6': 26,
    'm': 27,
    'u': 28,
    'a': 29,
    '7': 30,
    'l': 31,
};
export class Base32 {
    static encode(data) {
        Preconditions.checkArgument(Array.isArray(data), 'data', 'Must be Array');
        let base32 = '';
        for (let i = 0; i < data.length; i++) {
            const value = data[i];
            Preconditions.checkArgument(0 <= value && value < 32, 'value', `value ${value}`);
            base32 += CHARSET[value];
        }
        return base32;
    }
    static decode(base32) {
        Preconditions.checkArgument(typeof base32 === 'string', 'base32', 'Must be base32-encoded string');
        const data = [];
        for (let i = 0; i < base32.length; i++) {
            const value = base32[i];
            Preconditions.checkArgument(value in CHARSET_INVERSE_INDEX, 'value', `value ${value}`);
            data.push(CHARSET_INVERSE_INDEX[value]);
        }
        return data;
    }
}