#single-file #expand #bundle #merge #cli

bin+lib rust_bundler_cp

Creates a single-source-file version of a Cargo package. This single file can be submitted for competitive programming then. Concentrating on codeforces.com now.

20 releases

0.3.16 Sep 26, 2023
0.3.15 Aug 2, 2022
0.3.14 Jul 22, 2022
0.3.8 Jun 26, 2022
0.2.8 Aug 13, 2021

#1016 in Command line utilities

MIT license

30KB
516 lines

rust-bundler-cp

This project is based on rust-bundler

Creates a single-source-file version of a Cargo package. It's designed for Competitive Programming like Codeforces.

I'm using rust-bundler-cp with my codeforces template https://github.com/Endle/rust_codeforce_template,

Features

  • Uses Syn to parse and manipulate a complete syntax tree, instead of doing replacement with regular expression.
  • Replaces extern crate my_lib; in main.rs with the contents of lib.rs.
  • Expands mod my_mod; declarations into mod my_mod { ... } blocks.
  • rustfmt needs to be available in PATH, i.e. dnf install rustfmt. I'll consider bundle rustfmt in my code later.

Example

Input:

// src/internal.rs:
pub fn hello_world() {
    println!("Hello, world!");
}

// src/lib.rs:
mod internal;
pub use internal::hello_world;

// src/main.rs:
extern crate example;
fn main() {
    example::hello_world();
}

Output:

mod internal {
    pub fn hello_world() {
        println!("Hello, world!");
    }
}
pub use internal::hello_world;
fn main() {
    hello_world();
}

More examples in tests/testdata.

Usage

Install:

$ cargo install rust_bundler_cp

Run:

$ rust_bundler_cp --input path/to/project >output.rs
$ rust_bundler_cp --input path/to/project --binary a

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Dependencies

~5–19MB
~256K SLoC