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|
use crate::THIS_PROGRAM;
use crate::{Program, ProgramCollect, RenderResult, error::ProgramExecuteError};
impl<C> Program<C>
where
C: ProgramCollect<Enum = C>,
{
/// Run the command line program
///
/// # Errors
///
/// Returns `Err(ProgramExecuteError)` if execution fails,
/// e.g., if no dispatcher is found or a chain error occurs.
///
/// # Panics
///
/// Panics if the program encounters a non-recoverable internal error.
#[might_be_async::func]
pub fn exec_without_render(mut self) -> Result<RenderResult, ProgramExecuteError>
where
C: 'static + Send + Sync,
{
// Run hooks
self.run_hook_on_begin(crate::hook::HookBeginInfo {});
self.args = self.args.iter().skip(1).cloned().collect();
#[cfg(not(feature = "async"))]
{
#[cfg(panic = "abort")]
return self.exec_wrapper(|p| crate::exec::exec(p).map_err(|e| e.into()));
#[cfg(not(panic = "abort"))]
match std::panic::catch_unwind(std::panic::AssertUnwindSafe(|| {
self.exec_wrapper(|p| crate::exec::exec(p).map_err(std::convert::Into::into))
})) {
Ok(result) => result,
Err(panic_info) => {
let panic_payload = crate::error::ProgramPanic {
payload: panic_info,
};
let program = THIS_PROGRAM
.get_raw()
.unwrap()
.downcast_ref::<Program<C>>()
.unwrap();
#[cfg(not(feature = "async"))]
program.run_hook_exec_panic(crate::hook::HookPanicInfo {
panic: &panic_payload,
});
Err(ProgramExecuteError::Panic(panic_payload))
}
}
}
#[cfg(feature = "async")]
{
return self
.exec_wrapper(|p| async { crate::exec::exec(p).await.map_err(|e| e.into()) })
.await;
}
}
/// Run the command line program
#[must_use]
#[might_be_async::func]
pub fn exec(self) -> i32
where
C: 'static + Send + Sync,
{
use crate::error::ProgramExecuteError;
let stdout_setting = self.stdout_setting.clone();
let result = match might_be_async::invoke!(self.exec_without_render()) {
Ok(r) => r,
Err(e) => match e {
ProgramExecuteError::DispatcherNotFound => {
eprintln!("Dispatcher not found");
return 1;
}
ProgramExecuteError::RendererNotFound(renderer_name) => {
eprintln!("Renderer `{renderer_name}` not found");
return 1;
}
ProgramExecuteError::Other(e) => {
eprintln!("{e}");
return 1;
}
ProgramExecuteError::Panic(unwinded_error) => {
eprintln!("{unwinded_error}");
return 1;
}
},
};
// Read exit code
// Render result
if stdout_setting.render_output {
result.std_print();
}
result.exit_code
}
/// Run the command line program, then exit
#[might_be_async::func]
pub fn exec_and_exit(self)
where
C: 'static + Send + Sync,
{
let exit_code = might_be_async::invoke!(self.exec());
// SAFETY: exec() is synchronous — it returns only after all
// chain handlers and renderers have finished. No code still
// holds references from get_raw() at this point.
drop(unsafe { THIS_PROGRAM.take() });
std::process::exit(exit_code)
}
}
// Async program
#[cfg(feature = "async")]
impl<C> Program<C>
where
C: ProgramCollect<Enum = C>,
{
pub(crate) async fn exec_wrapper<F, Fut>(self, f: F) -> Fut::Output
where
C: 'static + Send + Sync,
F: FnOnce(&'static Program<C>) -> Fut + Send + Sync,
Fut: Future + Send,
{
THIS_PROGRAM.set(Box::new(self));
let program = THIS_PROGRAM
.get_raw()
.unwrap()
.downcast_ref::<Program<C>>()
.unwrap();
f(program).await
}
}
// Sync program
#[cfg(not(feature = "async"))]
impl<C> Program<C>
where
C: ProgramCollect<Enum = C>,
{
pub(crate) fn exec_wrapper<F, R>(self, f: F) -> R
where
C: 'static + Send + Sync,
F: FnOnce(&'static Program<C>) -> R + Send + Sync,
{
THIS_PROGRAM.set(Box::new(self));
let program = THIS_PROGRAM
.get_raw()
.unwrap()
.downcast_ref::<Program<C>>()
.unwrap();
#[cfg(not(panic = "abort"))]
if program.stdout_setting.silence_panic {
std::panic::set_hook(Box::new(|_| {}));
}
f(program)
}
}
|
