gzip 0.1.2

A GZIP compression library
Documentation 
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use std::{error, result, fmt, io};

#[derive(Debug, Clone)]
pub enum ErrorKind {
    InvalidMagicHeader,
    InvalidCompressionMethod,
    InvalidFlags,
    InvalidCompressionFlags,
    Io,
    Other(String),
}

pub struct Error(pub ErrorKind, pub Option<Box<dyn error::Error + Send + Sync>>);

impl From<io::Error> for Error {
    fn from(err: io::Error) -> Self { Error(ErrorKind::Io, Some(Box::new(err))) }
}

impl error::Error for Error {
    fn source(&self) -> Option<&(dyn error::Error + 'static)> {
        match &self.1 {
            Some(err) => err.source(),
            None => None,
        }
    }
}

impl fmt::Debug for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match &self.1 {
            Some(err) => err.fmt(f),
            None => write!(f, "{:?}", self.0),
        }
    }
}

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        fmt::Debug::fmt(self, f)
    }
}

pub type Result<T> = result::Result<T, Error>;