libbz2-rs-sys-cdylib 0.2.5

a drop-in compatible libbz2 cdylib
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

#![no_std]

extern crate libbz2_rs_sys;

use core::panic::PanicInfo;
pub use libbz2_rs_sys::*;

#[cfg(feature = "stdio")]
struct StderrWritter;

#[cfg(feature = "stdio")]
impl core::fmt::Write for StderrWritter {
    fn write_str(&mut self, s: &str) -> core::fmt::Result {
        use core::ffi::c_void;
        use libc::write;

        unsafe { write(2, s.as_ptr() as *const c_void, s.len() as _) };

        Ok(())
    }
}

#[panic_handler]
fn panic_handler(_info: &PanicInfo) -> ! {
    #[cfg(feature = "stdio")]
    {
        use core::fmt::Write;
        use libc::exit;

        let _ = StderrWritter.write_str("libbzip2-rs: internal error:\n");
        let _ = StderrWritter.write_fmt(format_args!("{}", _info.message()));

        unsafe {
            exit(3);
        }
    }

    #[cfg(not(feature = "stdio"))]
    {
        use core::sync::atomic::Ordering;

        extern "C" {
            fn bz_internal_error(errcode: core::ffi::c_int);
        }

        // If the panic was triggered by handle_assert_failure ASSERT_CODE will contain the
        // assertion code. Otherwise it will contain -1.
        unsafe { bz_internal_error(ASSERT_CODE.load(Ordering::Relaxed)) }
        loop {}
    }
}