| 1 | 'use strict'
|
| 2 |
|
| 3 | const varint = require('varint')
|
| 4 | const uint8ArrayToString = require('uint8arrays/to-string')
|
| 5 | const uint8ArrayFromString = require('uint8arrays/from-string')
|
| 6 |
|
| 7 | module.exports = {
|
| 8 | numberToUint8Array,
|
| 9 | uint8ArrayToNumber,
|
| 10 | varintUint8ArrayEncode,
|
| 11 | varintEncode
|
| 12 | }
|
| 13 |
|
| 14 | function uint8ArrayToNumber (buf) {
|
| 15 | return parseInt(uint8ArrayToString(buf, 'base16'), 16)
|
| 16 | }
|
| 17 |
|
| 18 | function numberToUint8Array (num) {
|
| 19 | let hexString = num.toString(16)
|
| 20 | if (hexString.length % 2 === 1) {
|
| 21 | hexString = '0' + hexString
|
| 22 | }
|
| 23 | return uint8ArrayFromString(hexString, 'base16')
|
| 24 | }
|
| 25 |
|
| 26 | function varintUint8ArrayEncode (input) {
|
| 27 | return Uint8Array.from(varint.encode(uint8ArrayToNumber(input)))
|
| 28 | }
|
| 29 |
|
| 30 | function varintEncode (num) {
|
| 31 | return Uint8Array.from(varint.encode(num))
|
| 32 | }
|