# byte-strings-rs
Rust zero-cost byte strings manipulation, for a better and safer FFI
[][Repository]
[][crates.io]
[][Documentation]
[](https://github.com/danielhenrymantilla/byte-strings-rs#license)
## Example
Featuring the `c_str!` macro to create **valid C string literals** with literally no
runtime cost!
```rust
/// Some lib
mod safe {
use ::std::{
ffi::CStr,
os::raw::{c_char, c_int},
};
/// private unsafe C FFI
mod ffi { use super::*; extern "C" {
pub fn puts (_: *const c_char) -> c_int;
}}
/// lib API: safe Rust wrapper => uses `CStr`
pub fn puts (message: &'_ CStr) -> i32
{
unsafe {
ffi::puts(message.as_ptr()) as i32
}
}
}
fn main ()
{
use ::byte_strings::c_str;
dbg!(safe::puts(
c_str!(
"Hello, ",
"World!",
) // No runtime error, no runtime cost
));
}
```
[Repository]: https://github.com/danielhenrymantilla/byte-strings-rs
[Documentation]: https://docs.rs/byte_strings
[crates.io]: https://crates.io/crates/byte-strings