Macro c_main 

macro_rules! c_main {
    ($runner:ident) => { ... };
    ($runner:ident -> $int:ident) => { ... };
}

Declares main function with C like signature, passing CLI arugments via Args

Arguments

• runner - Function name to accepts Args instance
• int - Integer type used for argc and return value. In C it is int and therefore by default macro uses $crate::int.

Return value

C++ main expects integer return value, therefore it automatically converts to int type

Panic

In case of supplied command line arguments contain non-UTF8 string, then terminates.

If printf is avalable then it prints to stdout and exits with return code 1 Otherwise it panics.

Usage

Default int type`

#![no_main]

fn my_main(args: c_ffi::Args) -> bool {
    match args.into_iter().count() {
        0 => true,
        _ => false,
    }
}

c_ffi::c_main!(my_main);