parent
9544ba1029
commit
36a033b87a
18
src/main.rs
18
src/main.rs
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@ -7,6 +7,7 @@ use notify::{RecommendedWatcher, RecursiveMode, Watcher};
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use std::ffi::OsStr;
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use std::ffi::OsStr;
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use std::fs;
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use std::fs;
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use std::path::Path;
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use std::path::Path;
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use std::process::{Command, Stdio};
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use std::sync::mpsc::channel;
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use std::sync::mpsc::channel;
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use std::time::Duration;
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use std::time::Duration;
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@ -56,6 +57,13 @@ fn main() {
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std::process::exit(1);
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std::process::exit(1);
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}
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}
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if !rustc_exists() {
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println!("We cannot find `rustc`.");
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println!("Try running `rustc --version` to diagnose your problem.");
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println!("For instructions on how to install Rust, check the README.");
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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 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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let exercises = toml::from_str::<ExerciseList>(toml_str).unwrap().exercises;
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@ -134,3 +142,13 @@ fn watch(exercises: &[Exercise]) -> notify::Result<()> {
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}
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}
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}
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}
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}
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}
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fn rustc_exists() -> bool {
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Command::new("rustc")
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.args(&["--version"])
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.stdout(Stdio::null())
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.spawn()
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.and_then(|mut child| child.wait())
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.map(|status| status.success())
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.unwrap_or(false)
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}
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