the most primitive repl ever

use std;
import std::io;
import std::io::writer_util;
import std::io::writer;
import std::run;


fn run_rust(s: str) -> str {
	let code = #fmt("use std;\nimport std::{io,dbg};\n\nfn main(){\n%s\n}\n", s);
	let writer = result::get( io::file_writer( "out.rs", [io::create, io::truncate] ) );
	writer.write_str(code);
	let r1 = run::program_output("rustc", ["out.rs"]);
	if r1.status != 0i {
		let e = str::split(r1.out, '\n' as u8 );
		let i = str::find(e[0],"error:");
		if i == -1 { i = str::find(e[0],"warning:"); }
		if i != -1 { ret str::slice(e[0],i as uint,str::byte_len(e[0])); }
	}
	let r2 = run::program_output("./out",[]);
	ret r2.err + " " + r2.out + "\n";
}

fn main() {
	let inp = io::stdin();
	let s = "";
	while true {
		let b = inp.read_byte();
		if ( b < 1 ) { break; }
		if b == 10 {
			let r = run_rust(s);
			io::println(r);
			s = "";
		} else {
			s += #fmt("%c", b as char); 
		}
	}
}