diff --git a/src/main.rs b/src/main.rs index d01a8273..30096dfe 100644 --- a/src/main.rs +++ b/src/main.rs @@ -10,7 +10,8 @@ use std::fs; use std::io::{self, prelude::*}; use std::path::Path; use std::process::{Command, Stdio}; -use std::sync::mpsc::channel; +use std::sync::atomic::{AtomicBool, Ordering}; +use std::sync::mpsc::{RecvTimeoutError, channel}; use std::sync::{Arc, Mutex}; use std::thread; use std::time::Duration; @@ -217,52 +218,60 @@ fn main() { } Subcommands::Watch(_subargs) => { - if let Err(e) = watch(&exercises, verbose) { - println!( - "Error: Could not watch your progress. Error message was {:?}.", - e - ); - println!("Most likely you've run out of disk space or your 'inotify limit' has been reached."); - std::process::exit(1); + match watch(&exercises, verbose) { + Err(e) => { + println!( + "Error: Could not watch your progress. Error message was {:?}.", + e + ); + println!("Most likely you've run out of disk space or your 'inotify limit' has been reached."); + std::process::exit(1); + } + Ok(WatchStatus::Finished) => { + println!( + "{emoji} All exercises completed! {emoji}", + emoji = Emoji("🎉", "★") + ); + println!(); + println!("+----------------------------------------------------+"); + println!("| You made it to the Fe-nish line! |"); + println!("+-------------------------- ------------------------+"); + println!(" \\/ "); + println!(" ▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒ "); + println!(" ▒▒▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒▒▒ "); + println!(" ▒▒▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒▒▒ "); + println!(" ░░▒▒▒▒░░▒▒ ▒▒ ▒▒ ▒▒ ▒▒░░▒▒▒▒ "); + println!(" ▓▓▓▓▓▓▓▓ ▓▓ ▓▓██ ▓▓ ▓▓██ ▓▓ ▓▓▓▓▓▓▓▓ "); + println!(" ▒▒▒▒ ▒▒ ████ ▒▒ ████ ▒▒░░ ▒▒▒▒ "); + println!(" ▒▒ ▒▒▒▒▒▒ ▒▒▒▒▒▒ ▒▒▒▒▒▒ ▒▒ "); + println!(" ▒▒▒▒▒▒▒▒▒▒▓▓▓▓▓▓▒▒▒▒▒▒▒▒▓▓▒▒▓▓▒▒▒▒▒▒▒▒ "); + println!(" ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ "); + println!(" ▒▒▒▒▒▒▒▒▒▒██▒▒▒▒▒▒██▒▒▒▒▒▒▒▒▒▒ "); + println!(" ▒▒ ▒▒▒▒▒▒▒▒▒▒██████▒▒▒▒▒▒▒▒▒▒ ▒▒ "); + println!(" ▒▒ ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ ▒▒ "); + println!(" ▒▒ ▒▒ ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ ▒▒ ▒▒ "); + println!(" ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ "); + println!(" ▒▒ ▒▒ ▒▒ ▒▒ "); + println!(); + println!("We hope you enjoyed learning about the various aspects of Rust!"); + println!( + "If you noticed any issues, please don't hesitate to report them to our repo." + ); + println!("You can also contribute your own exercises to help the greater community!"); + println!(); + println!("Before reporting an issue or contributing, please read our guidelines:"); + println!("https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md"); + } + Ok(WatchStatus::Unfinished) => { + println!("We hope you're enjoying learning about Rust!"); + println!("If you want to continue working on the exercises at a later point, you can simply run `rustlings watch` again"); + } } - println!( - "{emoji} All exercises completed! {emoji}", - emoji = Emoji("🎉", "★") - ); - println!(); - println!("+----------------------------------------------------+"); - println!("| You made it to the Fe-nish line! |"); - println!("+-------------------------- ------------------------+"); - println!(" \\/ "); - println!(" ▒▒ ▒▒▒▒▒▒▒▒ ▒▒▒▒▒▒▒▒ ▒▒ "); - println!(" ▒▒▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒▒▒ "); - println!(" ▒▒▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒▒▒ "); - println!(" ░░▒▒▒▒░░▒▒ ▒▒ ▒▒ ▒▒ ▒▒░░▒▒▒▒ "); - println!(" ▓▓▓▓▓▓▓▓ ▓▓ ▓▓██ ▓▓ ▓▓██ ▓▓ ▓▓▓▓▓▓▓▓ "); - println!(" ▒▒▒▒ ▒▒ ████ ▒▒ ████ ▒▒░░ ▒▒▒▒ "); - println!(" ▒▒ ▒▒▒▒▒▒ ▒▒▒▒▒▒ ▒▒▒▒▒▒ ▒▒ "); - println!(" ▒▒▒▒▒▒▒▒▒▒▓▓▓▓▓▓▒▒▒▒▒▒▒▒▓▓▒▒▓▓▒▒▒▒▒▒▒▒ "); - println!(" ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ "); - println!(" ▒▒▒▒▒▒▒▒▒▒██▒▒▒▒▒▒██▒▒▒▒▒▒▒▒▒▒ "); - println!(" ▒▒ ▒▒▒▒▒▒▒▒▒▒██████▒▒▒▒▒▒▒▒▒▒ ▒▒ "); - println!(" ▒▒ ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ ▒▒ "); - println!(" ▒▒ ▒▒ ▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒▒ ▒▒ ▒▒ "); - println!(" ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ ▒▒ "); - println!(" ▒▒ ▒▒ ▒▒ ▒▒ "); - println!(); - println!("We hope you enjoyed learning about the various aspects of Rust!"); - println!( - "If you noticed any issues, please don't hesitate to report them to our repo." - ); - println!("You can also contribute your own exercises to help the greater community!"); - println!(); - println!("Before reporting an issue or contributing, please read our guidelines:"); - println!("https://github.com/rust-lang/rustlings/blob/main/CONTRIBUTING.md"); } } } -fn spawn_watch_shell(failed_exercise_hint: &Arc>>) { +fn spawn_watch_shell(failed_exercise_hint: &Arc>>, should_quit: Arc) { let failed_exercise_hint = Arc::clone(failed_exercise_hint); println!("Welcome to watch mode! You can type 'help' to get an overview of the commands you can use here."); thread::spawn(move || loop { @@ -270,15 +279,15 @@ fn spawn_watch_shell(failed_exercise_hint: &Arc>>) { match io::stdin().read_line(&mut input) { Ok(_) => { let input = input.trim(); - if input.eq("hint") { + if input == "hint" { if let Some(hint) = &*failed_exercise_hint.lock().unwrap() { println!("{}", hint); } - } else if input.eq("clear") { + } else if input == "clear" { println!("\x1B[2J\x1B[1;1H"); } else if input.eq("quit") { + should_quit.store(true, Ordering::SeqCst); println!("Bye!"); - std::process::exit(0); } else if input.eq("help") { println!("Commands available to you in watch mode:"); println!(" hint - prints the current exercise's hint"); @@ -318,7 +327,12 @@ fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> &'a Exercise { } } -fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result<()> { +enum WatchStatus { + Finished, + Unfinished, +} + +fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result { /* Clears the terminal with an ANSI escape code. Works in UNIX and newer Windows terminals. */ fn clear_screen() { @@ -326,6 +340,7 @@ fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result<()> { } let (tx, rx) = channel(); + let should_quit = Arc::new(AtomicBool::new(false)); let mut watcher: RecommendedWatcher = Watcher::new(tx, Duration::from_secs(2))?; watcher.watch(Path::new("./exercises"), RecursiveMode::Recursive)?; @@ -334,12 +349,12 @@ fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result<()> { let to_owned_hint = |t: &Exercise| t.hint.to_owned(); let failed_exercise_hint = match verify(exercises.iter(), verbose) { - Ok(_) => return Ok(()), + Ok(_) => return Ok(WatchStatus::Finished), Err(exercise) => Arc::new(Mutex::new(Some(to_owned_hint(exercise)))), }; - spawn_watch_shell(&failed_exercise_hint); + spawn_watch_shell(&failed_exercise_hint, Arc::clone(&should_quit)); loop { - match rx.recv() { + match rx.recv_timeout(Duration::from_secs(1)) { Ok(event) => match event { DebouncedEvent::Create(b) | DebouncedEvent::Chmod(b) | DebouncedEvent::Write(b) => { if b.extension() == Some(OsStr::new("rs")) && b.exists() { @@ -355,7 +370,7 @@ fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result<()> { ); clear_screen(); match verify(pending_exercises, verbose) { - Ok(_) => return Ok(()), + Ok(_) => return Ok(WatchStatus::Finished), Err(exercise) => { let mut failed_exercise_hint = failed_exercise_hint.lock().unwrap(); *failed_exercise_hint = Some(to_owned_hint(exercise)); @@ -365,8 +380,15 @@ fn watch(exercises: &[Exercise], verbose: bool) -> notify::Result<()> { } _ => {} }, + Err(RecvTimeoutError::Timeout) => { + // the timeout expired, just check the `should_quit` variable below then loop again + } Err(e) => println!("watch error: {:?}", e), } + // Check if we need to exit + if should_quit.load(Ordering::SeqCst) { + return Ok(WatchStatus::Unfinished); + } } }