67 lines
1.7 KiB
Rust
67 lines
1.7 KiB
Rust
//
|
|
// imag - the personal information management suite for the commandline
|
|
// Copyright (C) 2015-2019 the imag contributors
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; version
|
|
// 2.1 of the License.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
|
|
|
use std::error::Error;
|
|
use std::fmt::{Formatter, Display};
|
|
|
|
#[derive(Debug)]
|
|
pub struct ExitCode(i32);
|
|
|
|
impl From<i32> for ExitCode {
|
|
fn from(i: i32) -> ExitCode {
|
|
ExitCode(i)
|
|
}
|
|
}
|
|
|
|
impl ExitCode {
|
|
pub fn code(self) -> i32 {
|
|
self.0
|
|
}
|
|
}
|
|
|
|
impl Display for ExitCode {
|
|
fn fmt(&self, f: &mut Formatter) -> Result<(), std::fmt::Error> {
|
|
write!(f, "ExitCode {}", self.0)
|
|
}
|
|
}
|
|
|
|
impl Error for ExitCode {
|
|
fn description(&self) -> &str {
|
|
"ExitCode"
|
|
}
|
|
|
|
fn cause(&self) -> Option<&dyn Error> {
|
|
None
|
|
}
|
|
|
|
fn source(&self) -> Option<&(dyn Error + 'static)> {
|
|
None
|
|
}
|
|
}
|
|
|
|
pub trait ExitUnwrap<T> {
|
|
fn unwrap_or_exit(self) -> T;
|
|
}
|
|
|
|
impl<T, E: Into<ExitCode>> ExitUnwrap<T> for Result<T, E> {
|
|
fn unwrap_or_exit(self) -> T {
|
|
self.map_err(Into::into).unwrap_or_else(|e| ::std::process::exit(e.0))
|
|
}
|
|
}
|
|
|