#![deny(warnings)]
#![no_std]
use core::fmt::{self};
use core::fmt::Write as fmt_Write;
use core::panic::PanicInfo;
use exit_no_std::exit;
#[cfg(all(not(target_os="dos"), windows))]
fn write_ascii_char(c: u8) {
use core::ptr::null_mut;
use winapi::shared::minwindef::DWORD;
use winapi::um::fileapi::WriteFile;
use winapi::um::handleapi::INVALID_HANDLE_VALUE;
use winapi::um::processenv::GetStdHandle;
use winapi::um::winbase::STD_ERROR_HANDLE;
let stderr = unsafe { GetStdHandle(STD_ERROR_HANDLE) };
if !stderr.is_null() && stderr != INVALID_HANDLE_VALUE {
let mut written: DWORD = 0;
unsafe { WriteFile(stderr, &c as *const _ as _, 1, &mut written as *mut _, null_mut()); }
}
}
#[cfg(all(not(target_os="dos"), not(windows)))]
fn write_ascii_char(c: u8) {
unsafe { libc::write(2, &c as *const _ as _, 1); }
}
#[cfg(target_os="dos")]
fn write_ascii_char(c: u8) {
use pc_ints::int_21h_ah_02h_out_ch;
if c == b'\n' {
int_21h_ah_02h_out_ch(b'\r');
}
int_21h_ah_02h_out_ch(c);
}
struct LastChanceWriter;
impl fmt::Write for LastChanceWriter {
fn write_char(&mut self, c: char) -> fmt::Result {
let c = c as u32;
let c = if c > 0x7F || c == '\r' as u32 {
b'?'
} else {
c as u8
};
write_ascii_char(c);
Ok(())
}
fn write_str(&mut self, s: &str) -> fmt::Result {
for c in s.chars() {
self.write_char(c)?;
}
Ok(())
}
}
pub fn panic(info: &PanicInfo, exit_code: u8) -> ! {
let _ = write!(LastChanceWriter, "Panic: {}", info.message());
if let Some(location) = info.location() {
let _ = write!(LastChanceWriter, " ({location})");
}
let _ = writeln!(LastChanceWriter, ".");
exit(exit_code)
}