@protobufjs/base64

Introduction

@protobufjs/base64 is a minimal Base64 implementation for number arrays.

How to Install

ohpm install @protobufjs/base64

For details about the OpenHarmony ohpm environment configuration, see OpenHarmony HAR.

How to Use

Importing and Using the Library

1. Import the dependency.

import { length, encode, decode, test } from '@protobufjs/base64'

2. Encrypt a Uint8Array typed array.

   let test="openharmony"
   const textEncoder = new util.TextEncoder()
   let uint8Array = textEncoder.encodeInto(test)
   let result= encode(uint8Array, 0, uint8Array.length)

2. Decode a Base64-encoded string.

   let test="openharmony"
   const textEncoder = new util.TextEncoder()
   let uint8Array = textEncoder.encodeInto(test)
   let encodeStr= encode(uint8Array, 0, uint8Array.length)

   let decodeUint8Array = new Uint8Array(length(encodeStr))
   decode(encodeStr, decodeUint8Array, 0)

3. Calculate the byte length of a Base64-encoded string.

   let test="openharmony"
   const textEncoder = new util.TextEncoder()
   let uint8Array = textEncoder.encodeInto(test)
   let encodeStr = encode(uint8Array, 0, uint8Array.length)
   let byteLength= length(encodeStr)

3. Test whether a specified string is encoded using Base64.

 test("123435")
 test("5L2g5aW9")

Available APIs

1. Calculates the byte length of a Base64-encoded string. length(string: string): number

2. Encodes a buffer into a Base64-encoded string. encode(buffer: Uint8Array, start: number, end: number): string

3. Decodes a Base64-encoded string into a buffer. decode(string: string, buffer: Uint8Array, offset: number): number

4. Tests whether a specified string is encoded using Base64. test(string: string): boolean

Constraints

This project has been verified in the following versions:

• DevEco Studio: 4.1 Canary (4.1.3.317), OpenHarmony SDK: API 11 (4.1.0.36)

Directory Structure

|---- ohos_entities
|     |---- entry  # Sample code
|           |---- src
|                 |---- ohosTest
|                       |---- ets
|                             |---- test
|                                   |---- Ability.test.ets  # Unit test

|     |---- README.md  # Readme  
|     |---- README_zh.md  # Readme                   

How to Contribute

If you find any problem when using the project, submit an issue or a PR.

License

This project is licensed under BSD License.