Crate fatfs

Expand description

A FAT filesystem library implemented in Rust.

Usage

This crate is on crates.io and can be used by adding fatfs to the dependencies in your project’s Cargo.toml.

[dependencies]
fatfs = "0.3"

And this in your crate root:

extern crate fatfs;

Examples

// Declare external crates
// Note: `fscommon` crate is used to speedup IO operations
extern crate fatfs;
extern crate fscommon;

use std::io::prelude::*;

fn main() -> std::io::Result<()> {
    // Initialize a filesystem object
    let img_file = std::fs::OpenOptions::new().read(true).write(true)
        .open("tmp/fat.img")?;
    let buf_stream = fscommon::BufStream::new(img_file);
    let fs = fatfs::FileSystem::new(buf_stream, fatfs::FsOptions::new())?;
    let root_dir = fs.root_dir();

    // Write a file
    root_dir.create_dir("foo")?;
    let mut file = root_dir.create_file("foo/hello.txt")?;
    file.truncate()?;
    file.write_all(b"Hello World!")?;

    // Read a directory
    let dir = root_dir.open_dir("foo")?;
    for r in dir.iter() {
        let entry = r?;
        println!("{}", entry.file_name());
    }
}