# Byte Transcoder
[](https://crates.io/crates/byte-transcoder)
[](https://docs.rs/byte-transcoder)
[](https://jsr.io/@todd/byte-transcoder)
[](https://jsr.io/@todd/byte-transcoder)
A Rust+Typescript library to transcode higher-level data types to/from bytes.
## Features
Supported data types:
- `u8`/`u16`/`u32`/`u64`
- `i8`/`i16`/`i32`/`i64`
- `string`
- `uuid`
### ByteReader
Wraps a byte slice (`[u8]` in Rust, `Uint8Array` in Typescript) and exposes
easy-to-use retrieval functions for primitives.
Can manually specify endianness.
### ByteWriter
Typescript only.
Helps write primitives to a `Uint8Array`.
Can manually specify endianness.
## Examples
Read `examples/`, `tests/`, and `src-ts/**/*.test.ts` for more examples!
### ByteReader
#### Typescript
```typescript
type Payload = { gameId: string; joinCode: string };
const bytes = new Uint8Array([
// <your binary data>
]);
const byteReader = new ByteReader(bytes);
const payload: Payload = {
gameId: byteReader.readUuid(),
joinCode: byteReader.readString()
};
```
#### Rust
```rust
struct Payload {
game_id: Uuid,
join_code: String,
}
let bytes: Vec<u8> = vec![
// <your binary data>
];
let mut byte_reader = ByteReader::new(bytes);
let payload = Payload {
game_id: byte_reader.read_uuid()?,
join_code: byte_reader.read_string()?,
}
```
### ByteWriter
#### Typescript
```typescript
type Payload = { gameId: string; joinCode: string };
const payload: Payload = {
gameId: "24399a6c-c4a9-4053-9b2d-4199107fb567",
joinCode: "12345"
};
const byteWriter = new ByteWriter();
byteWriter.writeUuid(payload.gameId);
byteWriter.writeString(payload.joinCode);
const bytes: Uint8Array = byteWriter.getBytes();
```
#### Rust
There is no need for a Rust version of `ByteWriter` as integers types already have `.to_le_bytes()` and `.to_be_bytes()` (and `.to_ne_bytes()`).
## Developers
**Project is under active maintenance - even if there are no recent commits!
Please submit an issue / bug request if the library needs updating for any
reason!**
### Feature Requests
#### Support more datatypes
I have only implemented the exact functions I need for the projects that I'm
currently building. If there is anything missing that you would like to see
implemented, please submit a PR! Or if you're lazy, submit a Feature Request and
I'll implement it lol
### Commands
- `make lint`
- `make test`
- `make fix`
## Credits
Made with 🤬 and 🥲 by [Todd Everett Griffin](https://www.toddgriffin.me/).