126 lines
4.4 KiB
Rust
126 lines
4.4 KiB
Rust
use crate::exercise::{Exercise, ExerciseList};
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use crate::run::run;
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use crate::verify::verify;
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use clap::{crate_version, App, Arg, SubCommand};
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use notify::DebouncedEvent;
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use notify::{RecommendedWatcher, RecursiveMode, Watcher};
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use std::ffi::OsStr;
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use std::fs;
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use std::path::Path;
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use std::sync::mpsc::channel;
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use std::time::Duration;
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mod exercise;
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mod run;
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mod verify;
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fn main() {
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let matches = App::new("rustlings")
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.version(crate_version!())
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.author("Olivia Hugger, Carol Nichols")
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.about("Rustlings is a collection of small exercises to get you used to writing and reading Rust code")
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.subcommand(SubCommand::with_name("verify").alias("v").about("Verifies all exercises according to the recommended order"))
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.subcommand(SubCommand::with_name("watch").alias("w").about("Reruns `verify` when files were edited"))
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.subcommand(
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SubCommand::with_name("run")
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.alias("r")
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.about("Runs/Tests a single exercise")
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.arg(Arg::with_name("file").required(true).index(1))
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.arg(Arg::with_name("test").short("t").long("test").help("Run the file as a test")),
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)
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.get_matches();
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if None == matches.subcommand_name() {
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println!();
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println!(r#" welcome to... "#);
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println!(r#" _ _ _ "#);
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println!(r#" _ __ _ _ ___| |_| (_)_ __ __ _ ___ "#);
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println!(r#" | '__| | | / __| __| | | '_ \ / _` / __| "#);
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println!(r#" | | | |_| \__ \ |_| | | | | | (_| \__ \ "#);
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println!(r#" |_| \__,_|___/\__|_|_|_| |_|\__, |___/ "#);
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println!(r#" |___/ "#);
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println!();
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}
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if !Path::new("info.toml").exists() {
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println!(
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"{} must be run from the rustlings directory",
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std::env::current_exe().unwrap().to_str().unwrap()
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);
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println!("Try `cd rustlings/`!");
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std::process::exit(1);
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}
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let toml_str = &fs::read_to_string("info.toml").unwrap();
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let exercises = toml::from_str::<ExerciseList>(toml_str).unwrap().exercises;
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if let Some(ref matches) = matches.subcommand_matches("run") {
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let filename = matches.value_of("file").unwrap_or_else(|| {
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println!("Please supply a file name!");
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std::process::exit(1);
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});
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let matching_exercise = |e: &&Exercise| {
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Path::new(filename)
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.canonicalize()
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.map(|p| p.ends_with(&e.path))
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.unwrap_or(false)
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};
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let exercise = exercises.iter().find(matching_exercise).unwrap_or_else(|| {
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println!("No exercise found for your file name!");
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std::process::exit(1)
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});
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run(&exercise).unwrap_or_else(|_| std::process::exit(1));
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}
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if matches.subcommand_matches("verify").is_some() {
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verify(&exercises).unwrap_or_else(|_| std::process::exit(1));
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}
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if matches.subcommand_matches("watch").is_some() {
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watch(&exercises).unwrap();
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}
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if matches.subcommand_name().is_none() {
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let text = fs::read_to_string("default_out.txt").unwrap();
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println!("{}", text);
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}
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}
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fn watch(exercises: &[Exercise]) -> notify::Result<()> {
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/* Clears the terminal with an ANSI escape code.
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Works in UNIX and newer Windows terminals. */
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fn clear_screen() {
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println!("\x1Bc");
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}
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let (tx, rx) = channel();
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let mut watcher: RecommendedWatcher = Watcher::new(tx, Duration::from_secs(2))?;
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watcher.watch(Path::new("./exercises"), RecursiveMode::Recursive)?;
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clear_screen();
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let _ignored = verify(exercises.iter());
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loop {
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match rx.recv() {
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Ok(event) => match event {
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DebouncedEvent::Create(b) | DebouncedEvent::Chmod(b) | DebouncedEvent::Write(b) => {
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if b.extension() == Some(OsStr::new("rs")) && b.exists() {
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let filepath = b.as_path().canonicalize().unwrap();
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let exercise = exercises
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.iter()
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.skip_while(|e| !filepath.ends_with(&e.path));
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clear_screen();
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let _ignored = verify(exercise);
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}
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}
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_ => {}
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},
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Err(e) => println!("watch error: {:?}", e),
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}
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}
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}
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