tar-wasi 0.4.38

A Rust implementation of a TAR file reader and writer. This library does not currently handle compression, but it is abstract over all I/O readers and writers. Additionally, great lengths are taken to ensure that the entire contents are never required to be entirely resident in memory all at once. This fork includes full support for running the library with WebAssembly via the target wasm32-wasi.
Documentation 
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use std::borrow::Cow;
use std::error;
use std::fmt;
use std::io::{self, Error};

#[derive(Debug)]
pub struct TarError {
    desc: Cow<'static, str>,
    io: io::Error,
}

impl TarError {
    pub fn new(desc: impl Into<Cow<'static, str>>, err: Error) -> TarError {
        TarError {
            desc: desc.into(),
            io: err,
        }
    }
}

impl error::Error for TarError {
    fn description(&self) -> &str {
        &self.desc
    }

    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
        Some(&self.io)
    }
}

impl fmt::Display for TarError {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        self.desc.fmt(f)
    }
}

impl From<TarError> for Error {
    fn from(t: TarError) -> Error {
        Error::new(t.io.kind(), t)
    }
}