possum-db 0.2.2

concurrent disk-backed cache supporting efficient direct file I/O, transactions, and snapshots using file cloning and sparse files
Documentation 
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use std::borrow::Borrow;

use super::*;

#[derive(Clone, Debug)]
pub(crate) struct Dir {
    path_buf: PathBuf,
    block_size: u64,
    supports_file_cloning: bool,
}

impl AsRef<Path> for Dir {
    fn as_ref(&self) -> &Path {
        &self.path_buf
    }
}

impl Borrow<Path> for Dir {
    fn borrow(&self) -> &Path {
        &self.path_buf
    }
}

impl Dir {
    pub fn new(path_buf: PathBuf) -> Result<Self> {
        fs::create_dir_all(&path_buf)?;
        let block_size = path_min_hole_size(&path_buf)?;
        let file = open_dir_as_file(&path_buf)?;
        let supports_file_cloning = file.file_system_flags()?.supports_block_cloning();
        Ok(Self {
            path_buf,
            block_size,
            supports_file_cloning,
        })
    }

    pub fn path(&self) -> &Path {
        &self.path_buf
    }

    pub fn block_size(&self) -> u64 {
        self.block_size
    }

    pub fn supports_file_cloning(&self) -> bool {
        self.supports_file_cloning
    }
}