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feat: Add "quit" command to rustlings watch
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closes: rust-lang#842
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yourname committed Sep 24, 2021
1 parent b0b5320 commit e63c36a
Showing 1 changed file with 72 additions and 50 deletions.
122 changes: 72 additions & 50 deletions src/main.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down Expand Up @@ -217,68 +218,76 @@ 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<Mutex<Option<String>>>) {
fn spawn_watch_shell(failed_exercise_hint: &Arc<Mutex<Option<String>>>, should_quit: Arc<AtomicBool>) {
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 {
let mut input = String::new();
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");
Expand Down Expand Up @@ -318,14 +327,20 @@ 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<WatchStatus> {
/* Clears the terminal with an ANSI escape code.
Works in UNIX and newer Windows terminals. */
fn clear_screen() {
println!("\x1Bc");
}

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)?;
Expand All @@ -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() {
Expand All @@ -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));
Expand All @@ -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);
}
}
}

Expand Down

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