rustlings/src/main.rs

#[macro_use]
extern crate clap;
extern crate console;
extern crate indicatif;
extern crate syntect;

use clap::{App, Arg, SubCommand};
use console::{style, Emoji};
use indicatif::ProgressBar;
use syntect::easy::HighlightFile;
use syntect::parsing::SyntaxSet;
use syntect::highlighting::{ThemeSet, Style};
use syntect::util::{as_24_bit_terminal_escaped, LinesWithEndings};
use std::fs::remove_file;
use std::io::BufRead;
use std::process::Command;

fn main() {
    let matches = App::new("rustlings")
        .version(crate_version!())
        .author("Olivia Hugger")
        .about("Test")
        .subcommand(SubCommand::with_name("verify").alias("v"))
        .subcommand(
            SubCommand::with_name("run")
                .alias("r")
                .arg(Arg::with_name("file").required(true).index(1)),
        ).get_matches();

    let ss = SyntaxSet::load_defaults_newlines();
    let ts = ThemeSet::load_defaults();
    
    println!(r#"                 _   _ _                  "#);
    println!(r#"  _ __ _   _ ___| |_| (_)_ __   __ _ ___  "#);
    println!(r#" | '__| | | / __| __| | | '_ \ / _` / __| "#);
    println!(r#" | |  | |_| \__ \ |_| | | | | | (_| \__ \ "#);
    println!(r#" |_|   \__,_|___/\__|_|_|_| |_|\__, |___/ "#);
    println!(r#"                               |___/      "#);
    println!("");

    if let Some(matches) = matches.subcommand_matches("run") {
        if let Some(filename) = matches.value_of("file") {
            let bar = ProgressBar::new_spinner();
            bar.set_message(format!("Compiling {}...", filename).as_str());
            bar.enable_steady_tick(100);
            let compilecmd = Command::new("rustc")
                .args(&[filename, "-o", "temp"])
                .output()
                .expect("fail");
            bar.set_message(format!("Running {}...", filename).as_str());
            if compilecmd.status.success() {
                let runcmd = Command::new("./temp").output().expect("fail");
                bar.finish_and_clear();

                if runcmd.status.success() {
                    println!("{}", String::from_utf8_lossy(&runcmd.stdout));
                    let formatstr =
                        format!("{} Successfully ran {}", Emoji("✅", "✓"), filename);
                    println!("{}", style(formatstr).green());
                    clean().unwrap();
                } else {
                    println!("{}", String::from_utf8_lossy(&runcmd.stdout));
                    println!("{}", String::from_utf8_lossy(&runcmd.stderr));

                    let formatstr =
                        format!("{} Ran {} with errors", Emoji("⚠️ ", "!"), filename);
                    println!("{}", style(formatstr).red());
                    clean().unwrap();
                }
            } else {
                bar.finish_and_clear();
                let formatstr = format!(
                    "{} Compilation of {} failed! Compiler error message:\n",
                    Emoji("⚠️ ", "!"),
                    filename
                );
                println!("{}", style(formatstr).red());
                println!("{}", String::from_utf8_lossy(&compilecmd.stderr));
                clean().unwrap();
            }
        } else {
            panic!("Please supply a filename!");
        }
    }

    if let Some(_) = matches.subcommand_matches("verify") {
        compile_only("exercises/ex1.rs");
        compile_only("exercises/ex2.rs");
        compile_only("exercises/ex3.rs");
        compile_only("exercises/ex4.rs");
        compile_only("exercises/ex5.rs");

        compile_only("exercises/variables/variables1.rs");
        compile_only("exercises/variables/variables2.rs");
        compile_only("exercises/variables/variables3.rs");
        compile_only("exercises/variables/variables4.rs");

        compile_only("exercises/functions/functions1.rs");
        compile_only("exercises/functions/functions2.rs");
        compile_only("exercises/functions/functions3.rs");
        compile_only("exercises/functions/functions4.rs");
        compile_only("exercises/functions/functions5.rs");

        compile_only("exercises/primitive_types/primitive_types1.rs");
        compile_only("exercises/primitive_types/primitive_types2.rs");
        compile_only("exercises/primitive_types/primitive_types3.rs");
        compile_only("exercises/primitive_types/primitive_types4.rs");
        compile_only("exercises/primitive_types/primitive_types5.rs");
        compile_only("exercises/primitive_types/primitive_types6.rs");

        test("exercises/tests/tests1.rs");
        test("exercises/tests/tests2.rs");
        test("exercises/tests/tests3.rs");
        test("exercises/tests/tests4.rs");

        test("exercises/if/if1.rs");

        compile_only("exercises/strings/strings1.rs");
        compile_only("exercises/strings/strings2.rs");
        compile_only("exercises/strings/strings3.rs");

        compile_only("exercises/move_semantics/move_semantics1.rs");
        compile_only("exercises/move_semantics/move_semantics2.rs");
        compile_only("exercises/move_semantics/move_semantics3.rs");
        compile_only("exercises/move_semantics/move_semantics4.rs");

        compile_only("exercises/modules/modules1.rs");
        compile_only("exercises/modules/modules2.rs");

        compile_only("exercises/macros/macros1.rs");
        compile_only("exercises/macros/macros2.rs");
        compile_only("exercises/macros/macros3.rs");
        compile_only("exercises/macros/macros4.rs");

        test("exercises/error_handling/errors1.rs");
        test("exercises/error_handling/errors2.rs");
        test("exercises/error_handling/errors3.rs");
        test("exercises/error_handling/errorsn.rs");
        compile_only("exercises/error_handling/option1.rs");
        test("exercises/error_handling/result1.rs");
    }

    if let None = matches.subcommand_name() {
        let mut highlighter = HighlightFile::new("default_out.md", &ss, &ts.themes["Solarized (dark)"]).unwrap();
        for maybe_line in highlighter.reader.lines() {
            let line = maybe_line.unwrap();
            let regions: Vec<(Style, &str)> = highlighter.highlight_lines.highlight(&line, &ss);
            println!("{}", as_24_bit_terminal_escaped(&regions[..], true));
        }
    }

    println!("\x1b[0m");
}

fn compile_only(filename: &str) {
    let bar = ProgressBar::new_spinner();
    bar.set_message(format!("Compiling {}...", filename).as_str());
    bar.enable_steady_tick(100);
    let compilecmd = Command::new("rustc")
        .args(&[filename, "-o", "temp", "--color", "always"])
        .output()
        .expect("fail");
    bar.finish_and_clear();
    if compilecmd.status.success() {
        let formatstr = format!(
            "{} Successfully compiled {}!",
            Emoji("✅", "✓"),
            filename
        );
        println!("{}", style(formatstr).green());
        clean().unwrap();
    } else {
        let formatstr = format!(
            "{} Compilation of {} failed! Compiler error message:\n",
            Emoji("⚠️ ", "!"),
            filename
        );
        println!("{}", style(formatstr).red());
        println!("{}", String::from_utf8_lossy(&compilecmd.stderr));
        clean().unwrap();
        std::process::exit(1);
    }
}

fn test(filename: &str) {
    let bar = ProgressBar::new_spinner();
    bar.set_message(format!("Testing {}...", filename).as_str());
    bar.enable_steady_tick(100);
    let testcmd = Command::new("rustc")
        .args(&["--test", filename, "-o", "temp"])
        .output()
        .expect("fail");
    bar.finish_and_clear();
    if testcmd.status.success() {
        let formatstr = format!("{} Successfully tested {}!", Emoji("✅", "✓"), filename);
        println!("{}", style(formatstr).green());
        clean().unwrap();
    } else {
        let formatstr = format!(
            "{} Testing of {} failed! Please try again.",
            Emoji("⚠️ ", "!"),
            filename
        );
        println!("{}", style(formatstr).red());
        clean().unwrap();
        std::process::exit(1);
    }
}

fn clean() -> Result<(), std::io::Error> {
    remove_file("temp")?;
    Ok(())
}