The main purpose of this crate is to bundle Rust projects in a single file. The target use case for this is submitting code to https://www.codingame.com/ where their sync tool requires the code to be in a single file which is very inconvenient when working on a complex algorithm
Let consider we have source code in 2 files
main.rs
mod common;
use common:*;
pub fn main() {
let result = reusable_function();
match result {
MyType::Value1 => todo!(),
MyType::Value2 => todo!()
}
/*
Program entry point .....
.....
...
*/
}common.rs
pub enum MyType {
Value1,
Value2
}
pub fn reusable_function() -> MyType {
todo!()
}
/*....*/This crate allows to bundle this project consisting of 2 files into functionally equivalent single file that looks like this: output.rs
mod common {
pub enum MyType {
Value1,
Value2
}
pub fn reusable_function() -> MyType {
todo!()
}
}
use common:*;
pub fn main() {
let result = reusable_function();
match result {
MyType::Value1 => todo!(),
MyType::Value2 => todo!()
}
/*
Program entry point .....
.....
...
*/
}Which in it's turn is linked to Coding Game Sync App that uploads it to the Coding Game platform.
Add build.rs file your cargo project with the following content:
use bundle_rs::{Bundle, ModuleFileSystem};
fn main() -> std::io::Result<()> {
let mut bundle = Bundle::new("main", ModuleFileSystem::new(vec!["./src"]));
bundle.load()?;
return bundle.write(&mut std::fs::File::create("./dist/singlefile.rs")?);
}(_Note: you can link to any executable you want not specifically main _ ) Add the following to the Cargo.toml of your project
[package]
build = "build/build.rs" #path to build.rs where you decided to put it
#....
[build-dependencies]
bundle-rs = {git = "https://github.com/VladimirMakaev/bundle-rs.git", branch = "main"}Now when you build your project a single file with bundled source code will be placed to ./dist/singlefile.rs
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