71 lines
1.5 KiB
JavaScript
71 lines
1.5 KiB
JavaScript
'use strict';
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var _ = require('lodash');
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var bs58 = require('bs58');
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var buffer = require('buffer');
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var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'.split('');
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var Base58 = function Base58(obj) {
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/* jshint maxcomplexity: 8 */
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if (!(this instanceof Base58)) {
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return new Base58(obj);
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}
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if (Buffer.isBuffer(obj)) {
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var buf = obj;
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this.fromBuffer(buf);
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} else if (typeof obj === 'string') {
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var str = obj;
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this.fromString(str);
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} else if (obj) {
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this.set(obj);
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}
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};
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Base58.validCharacters = function validCharacters(chars) {
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if (buffer.Buffer.isBuffer(chars)) {
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chars = chars.toString();
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}
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return _.all(_.map(chars, function(char) { return _.contains(ALPHABET, char); }));
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};
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Base58.prototype.set = function(obj) {
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this.buf = obj.buf || this.buf || undefined;
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return this;
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};
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Base58.encode = function(buf) {
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if (!buffer.Buffer.isBuffer(buf)) {
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throw new Error('Input should be a buffer');
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}
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return bs58.encode(buf);
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};
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Base58.decode = function(str) {
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if (typeof str !== 'string') {
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throw new Error('Input should be a string');
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}
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return new Buffer(bs58.decode(str));
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};
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Base58.prototype.fromBuffer = function(buf) {
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this.buf = buf;
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return this;
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};
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Base58.prototype.fromString = function(str) {
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var buf = Base58.decode(str);
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this.buf = buf;
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return this;
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};
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Base58.prototype.toBuffer = function() {
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return this.buf;
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};
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Base58.prototype.toString = function() {
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return Base58.encode(this.buf);
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};
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module.exports = Base58;
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