countio 0.2.1

Byte counting for std::io::{Read, Write, Seek} and its async variants from futures and tokio.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72

## countio

[![Build Status][action-badge]][action-url]
[![Crate Docs][docs-badge]][docs-url]
[![Crate Version][crates-badge]][crates-url]
[![Crate Coverage][coverage-badge]][coverage-url]

**Also check out other `xwde` projects [here](https://github.com/xwde).**

[action-badge]: https://img.shields.io/github/actions/workflow/status/xwde/countio/build.yaml?branch=main&label=build&logo=github&style=flat-square
[action-url]: https://github.com/xwde/countio/actions/workflows/build.yaml
[crates-badge]: https://img.shields.io/crates/v/countio.svg?logo=rust&style=flat-square
[crates-url]: https://crates.io/crates/countio
[docs-badge]: https://img.shields.io/docsrs/countio?logo=Docs.rs&style=flat-square
[docs-url]: http://docs.rs/countio
[coverage-badge]: https://img.shields.io/codecov/c/github/xwde/countio?style=flat-square
[coverage-url]: https://app.codecov.io/gh/xwde/countio

The wrapper struct to enable byte counting for `std::io::Read`,
`std::io::Write`, `std::io::Seek` and its asynchronous variants from `futures`
and `tokio` crates.

### Features

- `std` to enable `std::io::{Read, Write, Seek, Debug}`. **Enabled by default**.
- `futures` to enable `futures_io::{AsyncRead, AsyncWrite, AsyncSeek}`.
- `tokio` to enable `tokio::io::{AsyncRead, AsyncWrite, AsyncSeek}`.

### Examples

- `std::io::Read`:

```rust
use std::io::prelude::*;
use std::io::BufReader;
use countio::Counter;

fn main() {
    let mut reader = "Hello World!".as_bytes();
    let mut reader = Counter::new(reader);
    let mut reader = BufReader::new(reader);

    let mut buf = String::new();
    let len = reader.read_line(&mut buf).unwrap();

    assert_eq!(len, reader.get_ref().reader_bytes());
}
```

- `std::io::Write`:

```rust
use std::io::prelude::*;
use std::io::BufWriter;
use countio::Counter;

fn main() {
    let mut writer = Vec::new();
    let mut writer = Counter::new(writer);
    let mut writer = BufWriter::new(writer);

    let buf = "Hello World!".as_bytes();
    let len = writer.write(buf).unwrap();
    writer.flush().unwrap();

    assert_eq!(len, writer.get_ref().writer_bytes());
}
```

### Links

- [SOF3/count-write](https://crates.io/crates/count-write)