blob: c49595b6c4c0e88c0d8420e39c01744d38c942f7 [file] [log] [blame]
//! Contains error type for handling I/O and Errno errors
#[cfg(unix)]
use nix;
#[cfg(windows)]
use std::char;
use std::error;
use std::fmt;
use std::io;
use std::str;
/// The error type for Rustyline errors that can arise from
/// I/O related errors or Errno when using the nix-rust library
/// #[non_exhaustive]
#[derive(Debug)]
pub enum ReadlineError {
/// I/O Error
Io(io::Error),
/// EOF (Ctrl-D)
Eof,
/// Ctrl-C
Interrupted,
/// Chars Error
#[cfg(unix)]
Utf8Error,
/// Unix Error from syscall
#[cfg(unix)]
Errno(nix::Error),
#[cfg(windows)]
WindowResize,
#[cfg(windows)]
Decode(char::DecodeUtf16Error),
}
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::Utf8Error => write!(f, "invalid utf-8: corrupt contents"),
#[cfg(unix)]
ReadlineError::Errno(ref err) => err.fmt(f),
#[cfg(windows)]
ReadlineError::WindowResize => write!(f, "WindowResize"),
#[cfg(windows)]
ReadlineError::Decode(ref err) => err.fmt(f),
}
}
}
impl error::Error for ReadlineError {
fn description(&self) -> &str {
match *self {
ReadlineError::Io(ref err) => err.description(),
ReadlineError::Eof => "EOF",
ReadlineError::Interrupted => "Interrupted",
#[cfg(unix)]
ReadlineError::Utf8Error => "invalid utf-8: corrupt contents",
#[cfg(unix)]
ReadlineError::Errno(ref err) => err.description(),
#[cfg(windows)]
ReadlineError::WindowResize => "WindowResize",
#[cfg(windows)]
ReadlineError::Decode(ref err) => err.description(),
}
}
}
impl From<io::Error> for ReadlineError {
fn from(err: io::Error) -> ReadlineError {
ReadlineError::Io(err)
}
}
#[cfg(unix)]
impl From<nix::Error> for ReadlineError {
fn from(err: nix::Error) -> ReadlineError {
ReadlineError::Errno(err)
}
}
#[cfg(windows)]
impl From<char::DecodeUtf16Error> for ReadlineError {
fn from(err: char::DecodeUtf16Error) -> ReadlineError {
ReadlineError::Decode(err)
}
}