feathercore-lib/lib/encoding/base58.js at master · FeatherCoin/feathercore-lib · GitHub

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'use strict';

var _ = require('lodash');

var bs58 = require('bs58');

var buffer = require('buffer');

var ALPHABET = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'.split('');

var Base58 = function Base58(obj) {

/* jshint maxcomplexity: 8 */

if (!(this instanceof Base58)) {

return new Base58(obj);

}

if (Buffer.isBuffer(obj)) {

var buf = obj;

this.fromBuffer(buf);

} else if (typeof obj === 'string') {

var str = obj;

this.fromString(str);

} else if (obj) {

this.set(obj);

}

};

Base58.validCharacters = function validCharacters(chars) {

if (buffer.Buffer.isBuffer(chars)) {

chars = chars.toString();

}

return _.all(_.map(chars, function(char) { return _.contains(ALPHABET, char); }));

};

Base58.prototype.set = function(obj) {

this.buf = obj.buf || this.buf || undefined;

return this;

};

Base58.encode = function(buf) {

if (!buffer.Buffer.isBuffer(buf)) {

throw new Error('Input should be a buffer');

}

return bs58.encode(buf);

};

Base58.decode = function(str) {

if (typeof str !== 'string') {

throw new Error('Input should be a string');

}

return new Buffer(bs58.decode(str));

};

Base58.prototype.fromBuffer = function(buf) {

this.buf = buf;

return this;

};

Base58.prototype.fromString = function(str) {

var buf = Base58.decode(str);

this.buf = buf;

return this;

};

Base58.prototype.toBuffer = function() {

return this.buf;

};

Base58.prototype.toString = function() {

return Base58.encode(this.buf);

};

module.exports = Base58;

feathercore-lib/lib/encoding/base58.js at master · FeatherCoin/feathercore-lib · GitHub

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