https://github.com/shepmaster/snafu

Easily assign underlying errors into domain-specific errors while adding context
https://github.com/shepmaster/snafu

error-handling rust

Last synced: about 2 months ago
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Easily assign underlying errors into domain-specific errors while adding context

• Host: GitHub
• URL: https://github.com/shepmaster/snafu
• Owner: shepmaster
• License: apache-2.0
• Created: 2019-01-27T15:56:35.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2024-04-14T10:07:47.000Z (5 months ago)
• Last Synced: 2024-05-03T19:53:11.806Z (5 months ago)
• Topics: error-handling, rust
• Language: Rust
• Homepage: https://docs.rs/snafu/
• Size: 882 KB
• Stars: 1,271
• Watchers: 18
• Forks: 59
• Open Issues: 77
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE-APACHE
  • Code of conduct: CODE_OF_CONDUCT.md

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README

        
# SNAFU

**S**ituation **N**ormal: **A**ll **F**ouled **U**p

[![crates.io][Crate Logo]][Crate]

[![Documentation][Doc Logo]][Doc]

[![Build Status][CI Logo]][CI]

SNAFU is a library to easily assign underlying errors into

domain-specific errors while adding context.

```rust

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 = std::result::Result;

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][Doc] and the [user's guide][Guide] for

a full description.

[Crate]: https://crates.io/crates/snafu

[Crate Logo]: https://img.shields.io/crates/v/snafu.svg

[Doc]: https://docs.rs/snafu

[Doc Logo]: https://docs.rs/snafu/badge.svg

[Guide]: https://docs.rs/snafu/*/snafu/guide/index.html

[CI]: https://cirrus-ci.com/github/shepmaster/snafu

[CI Logo]: https://api.cirrus-ci.com/github/shepmaster/snafu.svg