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/// Source for errors in this crate
#[derive(Debug)]
pub enum Source {
/// error came from std::io::Error
Io(std::io::Error),
/// error came from nix::Error
Nix(nix::Error),
}
impl std::fmt::Display for Source {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::Io(e) => write!(f, "{}", e),
Self::Nix(e) => write!(f, "{}", e),
}
}
}
impl std::convert::From<std::io::Error> for Source {
fn from(e: std::io::Error) -> Self {
Self::Io(e)
}
}
impl std::convert::From<nix::Error> for Source {
fn from(e: nix::Error) -> Self {
Self::Nix(e)
}
}
/// Error type for this crate
#[derive(Debug)]
pub enum Error {
/// error creating pty
CreatePty(Source),
/// error setting terminal size
SetTermSize(Source),
/// error spawning subprocess
Spawn(Source),
}
impl std::fmt::Display for Error {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
match self {
Self::CreatePty(e) => {
write!(f, "error creating pty: {}", e)
}
Self::SetTermSize(e) => {
write!(f, "error setting terminal size: {}", e)
}
Self::Spawn(e) => {
write!(f, "error spawning subprocess: {}", e)
}
}
}
}
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Self::CreatePty(e) | Self::SetTermSize(e) | Self::Spawn(e) => {
match e {
Source::Io(e) => Some(e),
Source::Nix(e) => Some(e),
}
}
}
}
}
/// Convenience wrapper for `Result`s using [`Error`](Error)
pub type Result<T> = std::result::Result<T, Error>;
pub fn create_pty<S: std::convert::Into<Source>>(source: S) -> Error {
Error::CreatePty(source.into())
}
pub fn set_term_size<S: std::convert::Into<Source>>(source: S) -> Error {
Error::SetTermSize(source.into())
}
pub fn spawn<S: std::convert::Into<Source>>(source: S) -> Error {
Error::Spawn(source.into())
}
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