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// Copyright 2016 Joe Wilm, The Alacritty Project Contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//! ANSI Terminal Stream Parsing
// Use the default behavior of the other platforms.
#[cfg(not(windows))]
pub fn attach_handler() {}
// Install a panic handler that renders the panic in a classical Windows error
// dialog box as well as writes the panic to STDERR.
#[cfg(windows)]
pub fn attach_handler() {
use std::{io, io::Write, panic, ptr};
use winapi::um::winuser;
panic::set_hook(Box::new(|panic_info| {
let _ = writeln!(io::stderr(), "{}", panic_info);
let msg = format!("{}\n\nPress Ctrl-C to Copy", panic_info);
unsafe {
winuser::MessageBoxW(
ptr::null_mut(),
win32_string(&msg).as_ptr(),
win32_string("Alacritty: Runtime Error").as_ptr(),
winuser::MB_ICONERROR
| winuser::MB_OK
| winuser::MB_SETFOREGROUND
| winuser::MB_TASKMODAL,
);
}
}));
}
// Converts the string slice into a Windows-standard representation for "W"-
// suffixed function variants, which accept UTF-16 encoded string values.
#[cfg(windows)]
fn win32_string(value: &str) -> Vec<u16> {
use std::ffi::OsStr;
use std::iter::once;
use std::os::windows::ffi::OsStrExt;
OsStr::new(value).encode_wide().chain(once(0)).collect()
}
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