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#[cfg(windows)]
use std::char;
use std::error::Error;
use std::fmt;
use std::io;
#[allow(clippy::module_name_repetitions)]
#[derive(Debug)]
#[non_exhaustive]
pub enum ReadlineError {
Io(io::Error),
Eof,
Interrupted,
#[cfg(unix)]
Errno(nix::Error),
WindowResized,
#[cfg(windows)]
Decode(char::DecodeUtf16Error),
#[cfg(windows)]
SystemError(clipboard_win::SystemError),
}
impl fmt::Display for ReadlineError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
ReadlineError::Io(ref err) => err.fmt(f),
ReadlineError::Eof => write!(f, "EOF"),
ReadlineError::Interrupted => write!(f, "Interrupted"),
#[cfg(unix)]
ReadlineError::Errno(ref err) => err.fmt(f),
ReadlineError::WindowResized => write!(f, "WindowResized"),
#[cfg(windows)]
ReadlineError::Decode(ref err) => err.fmt(f),
#[cfg(windows)]
ReadlineError::SystemError(ref err) => err.fmt(f),
}
}
}
impl Error for ReadlineError {
fn source(&self) -> Option<&(dyn Error + 'static)> {
match *self {
ReadlineError::Io(ref err) => Some(err),
ReadlineError::Eof => None,
ReadlineError::Interrupted => None,
#[cfg(unix)]
ReadlineError::Errno(ref err) => Some(err),
ReadlineError::WindowResized => None,
#[cfg(windows)]
ReadlineError::Decode(ref err) => Some(err),
#[cfg(windows)]
ReadlineError::SystemError(_) => None,
}
}
}
#[cfg(unix)]
#[derive(Debug)]
pub(crate) struct WindowResizedError;
#[cfg(unix)]
impl fmt::Display for WindowResizedError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "WindowResized")
}
}
#[cfg(unix)]
impl Error for WindowResizedError {}
impl From<io::Error> for ReadlineError {
fn from(err: io::Error) -> Self {
#[cfg(unix)]
if err.kind() == io::ErrorKind::Interrupted {
if let Some(e) = err.get_ref() {
if e.downcast_ref::<WindowResizedError>().is_some() {
return ReadlineError::WindowResized;
}
}
}
ReadlineError::Io(err)
}
}
impl From<io::ErrorKind> for ReadlineError {
fn from(kind: io::ErrorKind) -> Self {
ReadlineError::Io(io::Error::from(kind))
}
}
#[cfg(unix)]
impl From<nix::Error> for ReadlineError {
fn from(err: nix::Error) -> Self {
ReadlineError::Errno(err)
}
}
#[cfg(windows)]
impl From<char::DecodeUtf16Error> for ReadlineError {
fn from(err: char::DecodeUtf16Error) -> Self {
ReadlineError::Io(io::Error::new(io::ErrorKind::InvalidData, err))
}
}
#[cfg(windows)]
impl From<std::string::FromUtf8Error> for ReadlineError {
fn from(err: std::string::FromUtf8Error) -> Self {
ReadlineError::Io(io::Error::new(io::ErrorKind::InvalidData, err))
}
}
#[cfg(unix)]
impl From<fmt::Error> for ReadlineError {
fn from(err: fmt::Error) -> Self {
ReadlineError::Io(io::Error::new(io::ErrorKind::Other, err))
}
}
#[cfg(windows)]
impl From<clipboard_win::SystemError> for ReadlineError {
fn from(err: clipboard_win::SystemError) -> Self {
ReadlineError::SystemError(err)
}
}