Struct VaListDisplay

pub struct VaListDisplay<'a, 'b> { /* private fields */ }

Helper struct created by display for safely printing printf-style formatting with format! and {}. This can be used with anything that uses format_args!, such as println! or the log crate.

#![feature(c_variadic)]

use core::ffi::{c_char, c_int};

#[no_mangle]
unsafe extern "C" fn c_library_print(str: *const c_char, mut args: ...) -> c_int {
    let format = printf_compat::output::display(str, args.as_va_list());
    println!("{}", format);
    format.bytes_written()
}

Implementations

impl VaListDisplay<'_, '_>

pub fn bytes_written(&self) -> c_int

Get the number of bytes written, or 0 if there was an error.

Trait Implementations

impl<'a, 'b> Display for VaListDisplay<'a, 'b>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.