#[cfg(all(feature = "interrupt-handler", not(feature = "disable-interrupts")))]mod _impl { use std::{ io, sync::atomic::{AtomicUsize, Ordering}, }; pub fn init_handler(mut message_channel: impl io::Write + Send + 'static) { ctrlc::set_handler(move || { const MESSAGES: &[&str] = &[ "interrupt requested", "please wait…", "the program will respond soon…", "if the program doesn't respond quickly enough, please let us know here: https://github.com/Byron/gitoxide/issues" ]; static CURRENT_MESSAGE: AtomicUsize = AtomicUsize::new(0); if !super::is_triggered() { CURRENT_MESSAGE.store(0, Ordering::Relaxed); } let msg_idx =CURRENT_MESSAGE.fetch_add(1, Ordering::Relaxed); super::IS_INTERRUPTED.store(true, Ordering::Relaxed); writeln!(message_channel, "{}", MESSAGES[msg_idx % MESSAGES.len()]).ok(); }) .expect("it is up to the application to ensure only one interrupt handler is installed, and this function is called only once.") }}use std::io;#[cfg(not(feature = "disable-interrupts"))]use std::sync::atomic::{AtomicBool, Ordering};#[cfg(any(feature = "disable-interrupts", not(feature = "interrupt-handler")))]mod _impl { use std::io; pub fn init_handler(_message_channel: impl io::Write + Send + 'static) {}}pub use _impl::init_handler;pub struct Read<R> { pub inner: R,}impl<R> io::Read for Read<R>where R: io::Read,{ fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> { if is_triggered() { return Err(io::Error::new(io::ErrorKind::Other, "interrupted by user")); } self.inner.read(buf) }}#[cfg(not(feature = "disable-interrupts"))]static IS_INTERRUPTED: AtomicBool = AtomicBool::new(false);#[cfg(not(feature = "disable-interrupts"))]pub fn is_triggered() -> bool { IS_INTERRUPTED.load(Ordering::Relaxed)}#[cfg(feature = "disable-interrupts")]pub fn is_triggered() -> bool { false}pub fn trigger() { #[cfg(not(feature = "disable-interrupts"))] IS_INTERRUPTED.store(true, Ordering::Relaxed);}pub fn reset() { #[cfg(not(feature = "disable-interrupts"))] IS_INTERRUPTED.store(false, Ordering::Relaxed);}/// Useful if some parts of the program set the interrupt programmatically to cause others to stop, while/// assuring the interrupt state is reset at the end of the function to avoid other side-effects.////// Note that this is inherently racy and that this will only work deterministically if there is only one/// top-level function running in a process.pub struct ResetOnDrop { was_interrupted: bool,}impl Default for ResetOnDrop { fn default() -> Self { ResetOnDrop { was_interrupted: is_triggered(), } }}impl Drop for ResetOnDrop { fn drop(&mut self) { if self.was_interrupted { trigger() } else { reset() } }}
#[cfg(all(feature = "interrupt-handler", not(feature = "disable-interrupts")))]
mod _impl {
use std::{
io,
sync::atomic::{AtomicUsize, Ordering},
};
pub fn init_handler(mut message_channel: impl io::Write + Send + 'static) {
ctrlc::set_handler(move || {
const MESSAGES: &[&str] = &[
"interrupt requested",
"please wait…",
"the program will respond soon…",
"if the program doesn't respond quickly enough, please let us know here: https://github.com/Byron/gitoxide/issues"
];
static CURRENT_MESSAGE: AtomicUsize = AtomicUsize::new(0);
if !super::is_triggered() {
CURRENT_MESSAGE.store(0, Ordering::Relaxed);
}
let msg_idx =CURRENT_MESSAGE.fetch_add(1, Ordering::Relaxed);
super::IS_INTERRUPTED.store(true, Ordering::Relaxed);
writeln!(message_channel, "{}", MESSAGES[msg_idx % MESSAGES.len()]).ok();
})
.expect("it is up to the application to ensure only one interrupt handler is installed, and this function is called only once.")
}
}
use std::io;
#[cfg(not(feature = "disable-interrupts"))]
use std::sync::atomic::{AtomicBool, Ordering};
#[cfg(any(feature = "disable-interrupts", not(feature = "interrupt-handler")))]
mod _impl {
use std::io;
pub fn init_handler(_message_channel: impl io::Write + Send + 'static) {}
}
pub use _impl::init_handler;
pub struct Read<R> {
pub inner: R,
}
impl<R> io::Read for Read<R>
where
R: io::Read,
{
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
if is_triggered() {
return Err(io::Error::new(io::ErrorKind::Other, "interrupted by user"));
}
self.inner.read(buf)
}
}
#[cfg(not(feature = "disable-interrupts"))]
static IS_INTERRUPTED: AtomicBool = AtomicBool::new(false);
#[cfg(not(feature = "disable-interrupts"))]
pub fn is_triggered() -> bool {
IS_INTERRUPTED.load(Ordering::Relaxed)
}
#[cfg(feature = "disable-interrupts")]
pub fn is_triggered() -> bool {
false
}
pub fn trigger() {
#[cfg(not(feature = "disable-interrupts"))]
IS_INTERRUPTED.store(true, Ordering::Relaxed);
}
pub fn reset() {
#[cfg(not(feature = "disable-interrupts"))]
IS_INTERRUPTED.store(false, Ordering::Relaxed);
}
/// Useful if some parts of the program set the interrupt programmatically to cause others to stop, while
/// assuring the interrupt state is reset at the end of the function to avoid other side-effects.
///
/// Note that this is inherently racy and that this will only work deterministically if there is only one
/// top-level function running in a process.
pub struct ResetOnDrop {
was_interrupted: bool,
}
impl Default for ResetOnDrop {
fn default() -> Self {
ResetOnDrop {
was_interrupted: is_triggered(),
}
}
}
impl Drop for ResetOnDrop {
fn drop(&mut self) {
if self.was_interrupted {
trigger()
} else {
reset()
}
}
}