Capture stderr output so that it can be printed after exit.
Otherwise is was just getting swallowed in the alternate terminal buffer. This was especially annoying with panics, since their messages and backtraces got completely swallowed.
This commit is contained in:
parent
8a49ed74c5
commit
dd40937cfa
351
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||||
crossterm = "0.14"
|
||||
gag = "0.1.10"
|
||||
|
||||
# Local crate dependencies
|
||||
[dependencies.backend]
|
||||
|
|
|
|||
37
src/main.rs
37
src/main.rs
|
|
@ -1,6 +1,10 @@
|
|||
use std::{
|
||||
io::{Read, Write},
|
||||
path::Path,
|
||||
};
|
||||
|
||||
use clap::{App, Arg};
|
||||
use editor::Editor;
|
||||
use std::path::Path;
|
||||
use term_ui::formatter::ConsoleLineFormatter;
|
||||
use term_ui::TermUI;
|
||||
|
||||
|
|
@ -33,7 +37,38 @@ fn main() {
|
|||
Editor::new(ConsoleLineFormatter::new(4))
|
||||
};
|
||||
|
||||
// Redirect stderr to an internal buffer, so we can print it after exiting.
|
||||
let stderr_buf = gag::BufferRedirect::stderr().unwrap();
|
||||
|
||||
// Initialize and start UI
|
||||
let exec_result = std::panic::catch_unwind(|| {
|
||||
let mut ui = TermUI::new_from_editor(editor);
|
||||
ui.main_ui_loop();
|
||||
});
|
||||
|
||||
// Check for panics. If we did panic, exit from raw mode and the alternate
|
||||
// screen before propagating the panic, so that the panic printout actually
|
||||
// goes to a visible and scrollable screen.
|
||||
match exec_result {
|
||||
Ok(_) => {
|
||||
// Print captured stderr.
|
||||
let mut msg = String::new();
|
||||
stderr_buf.into_inner().read_to_string(&mut msg).unwrap();
|
||||
eprint!("{}", msg);
|
||||
}
|
||||
Err(e) => {
|
||||
// Exit raw alt screen.
|
||||
crossterm::terminal::disable_raw_mode().unwrap();
|
||||
crossterm::execute!(std::io::stdout(), crossterm::terminal::LeaveAlternateScreen)
|
||||
.unwrap();
|
||||
|
||||
// Print captured stderr.
|
||||
let mut msg = String::new();
|
||||
stderr_buf.into_inner().read_to_string(&mut msg).unwrap();
|
||||
eprint!("{}", msg);
|
||||
|
||||
// Resume panic unwind.
|
||||
std::panic::resume_unwind(e);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user