countio 0.2.5

countio

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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}. Enabled by default.
• futures to enable futures_io::{AsyncRead, AsyncWrite, AsyncSeek}.
• tokio to enable tokio::io::{AsyncRead, AsyncWrite, AsyncSeek}.

Examples

• std::io::Read:

use std::io::{BufRead, BufReader};
use countio::Counter;

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

use std::io::{BufWriter, Write};
use countio::Counter;

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