use std::{
env, ffi::OsStr, path::{Path, PathBuf}, process::Stdio
};
use anyhow::Result;
use tokio::{fs::File, io, process::Command};
#[derive(Default, Debug, Clone, Copy)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "serde", serde(rename_all = "lowercase"))]
pub enum Language {
#[default]
Rust,
C,
CPP,
Python,
NodeJs,
Golang,
Java,
}
pub async fn compile<B: Into<PathBuf>, S: Into<PathBuf>, O: AsRef<str>>(
language: Language,
base: B,
source_file_path: S,
output_file: O,
) -> Result<()> {
let base_path = Into::<PathBuf>::into(base);
let source_path = Into::<PathBuf>::into(source_file_path);
let source_path_str = source_path.to_string_lossy();
let output_path = base_path.join(output_file.as_ref());
let output_path_str = output_path.to_string_lossy();
let command = match language {
Language::C => {
let mut command = Command::new("gcc");
command.args([
"-O2",
"-w",
"-fmax-errors=3",
"-std=c17",
source_path_str.as_ref(),
"-lm",
"-o",
output_path_str.as_ref(),
]);
Some(command)
}
Language::CPP => {
let mut command = Command::new("g++");
command.args([
"-O2",
"-w",
"-fmax-errors=3",
"-std=c++20",
source_path_str.as_ref(),
"-lm",
"-o",
output_path_str.as_ref(),
]);
Some(command)
}
Language::Rust => {
let rustc_path = Path::new(&env::var("HOME")?)
.join(".rustup/toolchains/stable-x86_64-unknown-linux-gnu/bin/rustc");
if !rustc_path.exists() {
panic!("Failed to find rustc from {}", rustc_path.display());
}
let mut command = Command::new(rustc_path);
command.args([
"--edition=2021",
source_path_str.as_ref(),
"-C",
"embed-bitcode=no",
"-C",
"opt-level=2",
"-o",
output_file.as_ref(),
]);
Some(command)
}
Language::Python => {
let mut command = Command::new("python3");
command.args(["-m", "py_compile", source_path_str.as_ref()]);
Some(command)
}
Language::NodeJs => None,
Language::Golang => {
let mut command = Command::new("go");
command.args([
"build",
"-o",
output_path_str.as_ref(),
source_path_str.as_ref(),
]);
Some(command)
}
Language::Java => {
let mut command = Command::new("javac");
let java_path = base_path.join("Main.java");
if source_path.file_name() != Some(OsStr::new("Main.java")) {
io::copy(
&mut File::open(source_path_str.as_ref()).await?,
&mut File::create(&java_path).await?,
)
.await?;
}
command.arg(java_path.to_string_lossy().as_ref());
Some(command)
}
};
if let Some(mut command) = command {
command.kill_on_drop(true).stdout(Stdio::piped()).spawn()?;
let output = command.output().await?;
if !output.status.success() {
let error_message = String::from_utf8_lossy(&output.stderr).to_string();
return Err(anyhow::anyhow!(
"Failed to compile source code: {}",
error_message
));
}
}
Ok(())
}