diff options
Diffstat (limited to 'src/main.rs')
| -rw-r--r-- | src/main.rs | 36 |
1 files changed, 10 insertions, 26 deletions
diff --git a/src/main.rs b/src/main.rs index d6542aa..9f45f33 100644 --- a/src/main.rs +++ b/src/main.rs @@ -10,7 +10,7 @@ use std::ffi::OsStr; use std::fs; use std::io::{self, prelude::*}; use std::path::Path; -use std::process::{Command, Stdio}; +use std::process::Command; use std::sync::atomic::{AtomicBool, Ordering}; use std::sync::mpsc::{channel, RecvTimeoutError}; use std::sync::{Arc, Mutex}; @@ -91,7 +91,7 @@ fn main() { println!("\n{WELCOME}\n"); } - if !rustc_exists() { + if which::which("rustc").is_err() { println!("We cannot find `rustc`."); println!("Try running `rustc --version` to diagnose your problem."); println!("For instructions on how to install Rust, check the README."); @@ -218,16 +218,13 @@ fn main() { println!("Failed to write rust-project.json to disk for rust-analyzer"); } else { println!("Successfully generated rust-project.json"); - println!("rust-analyzer will now parse exercises, restart your language server or editor") + println!("rust-analyzer will now parse exercises, restart your language server or editor"); } } Subcommands::Watch { success_hints } => match watch(&exercises, verbose, success_hints) { Err(e) => { - println!( - "Error: Could not watch your progress. Error message was {:?}.", - 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); } @@ -281,7 +278,7 @@ fn spawn_watch_shell( if parts.is_empty() { println!("no command provided"); } else if let Err(e) = Command::new(parts[0]).args(&parts[1..]).status() { - println!("failed to execute command `{}`: {}", cmd, e); + println!("failed to execute command `{cmd}`: {e}"); } } else { println!("unknown command: {input}"); @@ -293,7 +290,7 @@ fn spawn_watch_shell( } fn find_exercise<'a>(name: &str, exercises: &'a [Exercise]) -> &'a Exercise { - if name.eq("next") { + if name == "next" { exercises .iter() .find(|e| !e.looks_done()) @@ -339,7 +336,6 @@ fn watch( clear_screen(); - let to_owned_hint = |t: &Exercise| t.hint.to_owned(); let failed_exercise_hint = match verify( exercises.iter(), (0, exercises.len()), @@ -347,7 +343,7 @@ fn watch( success_hints, ) { Ok(_) => return Ok(WatchStatus::Finished), - Err(exercise) => Arc::new(Mutex::new(Some(to_owned_hint(exercise)))), + Err(exercise) => Arc::new(Mutex::new(Some(exercise.hint.clone()))), }; spawn_watch_shell(&failed_exercise_hint, Arc::clone(&should_quit)); loop { @@ -384,7 +380,7 @@ fn watch( Err(exercise) => { let mut failed_exercise_hint = failed_exercise_hint.lock().unwrap(); - *failed_exercise_hint = Some(to_owned_hint(exercise)); + *failed_exercise_hint = Some(exercise.hint.clone()); } } } @@ -404,19 +400,7 @@ fn watch( } } -fn rustc_exists() -> bool { - Command::new("rustc") - .args(["--version"]) - .stdout(Stdio::null()) - .stderr(Stdio::null()) - .stdin(Stdio::null()) - .spawn() - .and_then(|mut child| child.wait()) - .map(|status| status.success()) - .unwrap_or(false) -} - -const DEFAULT_OUT: &str = r#"Thanks for installing Rustlings! +const DEFAULT_OUT: &str = "Thanks for installing Rustlings! Is this your first time? Don't worry, Rustlings was made for beginners! We are going to teach you a lot of things about Rust, but before we can get @@ -442,7 +426,7 @@ started, here's a couple of notes about how Rustlings operates: autocompletion, run the command `rustlings lsp`. Got all that? Great! To get started, run `rustlings watch` in order to get the first -exercise. Make sure to have your editor open!"#; +exercise. Make sure to have your editor open!"; const FENISH_LINE: &str = "+----------------------------------------------------+ | You made it to the Fe-nish line! | |