#cache #open-file #handle

file_cache

cache file open handle

4 releases

0.0.5 Jul 25, 2022
0.0.4 Jul 25, 2022
0.0.3 Jul 12, 2022
0.0.2 Jul 12, 2022

#26 in #open-file

Apache-2.0

10KB

file_cache

cache file open handle

use example

./examples/main.rs

use anyhow::Result;
use async_std::io::{prelude::SeekExt, ReadExt, SeekFrom};
use file_cache::FileCache;

async fn get(cache: &mut FileCache) -> Result<()> {
  let mut path = std::env::current_exe()?;
  (0..4).for_each(|_| {
    path.pop();
  });
  let path = path.join("Cargo.toml").display().to_string();
  let host = cache.get(path).await?;
  let mut host = host.value();
  host.seek(SeekFrom::Start(0)).await?;
  let mut out = [0u8; 1024];
  let n = host.read(&mut out).await?;
  println!("{}", std::str::from_utf8(&out[..n])?);
  dbg!(n);
  Ok(())
}

#[async_std::main]
async fn main() -> Result<()> {
  let mut cache = FileCache::new(2048)?;
  get(&mut cache).await?;
  Ok(())
}

Dependencies

~8–17MB
~246K SLoC