47 releases

0.8.5 Sep 23, 2024
0.8.4 Jul 8, 2024
0.8.3 May 24, 2024
0.8.2 Mar 11, 2024
0.2.0 Mar 26, 2019

#21 in Rust patterns

Download history 425965/week @ 2024-08-08 409161/week @ 2024-08-15 433360/week @ 2024-08-22 384482/week @ 2024-08-29 430481/week @ 2024-09-05 410224/week @ 2024-09-12 423863/week @ 2024-09-19 455829/week @ 2024-09-26 458656/week @ 2024-10-03 433719/week @ 2024-10-10 460799/week @ 2024-10-17 460614/week @ 2024-10-24 532925/week @ 2024-10-31 607057/week @ 2024-11-07 664261/week @ 2024-11-14 567861/week @ 2024-11-21

2,467,762 downloads per month
Used in 1,351 crates (493 directly)

MIT/Apache

120KB
2K SLoC

SNAFU

Situation Normal: All Fouled Up

crates.io Documentation Build Status

SNAFU is a library to easily assign underlying errors into domain-specific errors while adding context.

use snafu::prelude::*;
use std::{fs, io, path::PathBuf};

#[derive(Debug, Snafu)]
enum Error {
    #[snafu(display("Unable to read configuration from {}", path.display()))]
    ReadConfiguration { source: io::Error, path: PathBuf },

    #[snafu(display("Unable to write result to {}", path.display()))]
    WriteResult { source: io::Error, path: PathBuf },
}

type Result<T, E = Error> = std::result::Result<T, E>;

fn process_data() -> Result<()> {
    let path = "config.toml";
    let configuration = fs::read_to_string(path).context(ReadConfigurationSnafu { path })?;
    let path = unpack_config(&configuration);
    fs::write(&path, b"My complex calculation").context(WriteResultSnafu { path })?;
    Ok(())
}

fn unpack_config(data: &str) -> &str {
    "/some/path/that/does/not/exist"
}

Please see the documentation and the user's guide for a full description.

Dependencies

~0.2–5.5MB
~29K SLoC