277 lines
9.3 KiB
Rust
277 lines
9.3 KiB
Rust
// 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.
|
|
//
|
|
//! Alacritty - The GPU Enhanced Terminal
|
|
#![deny(clippy::all, clippy::if_not_else, clippy::enum_glob_use, clippy::wrong_pub_self_convention)]
|
|
#![cfg_attr(feature = "nightly", feature(core_intrinsics))]
|
|
#![cfg_attr(all(test, feature = "bench"), feature(test))]
|
|
|
|
// With the default subsystem, 'console', windows creates an additional console
|
|
// window for the program.
|
|
// This is silently ignored on non-windows systems.
|
|
// See https://msdn.microsoft.com/en-us/library/4cc7ya5b.aspx for more details.
|
|
#![windows_subsystem = "windows"]
|
|
|
|
#[cfg(target_os = "macos")]
|
|
use dirs;
|
|
|
|
#[cfg(windows)]
|
|
use winapi::um::wincon::{AttachConsole, FreeConsole, ATTACH_PARENT_PROCESS};
|
|
|
|
use log::{info, error};
|
|
|
|
use std::error::Error;
|
|
use std::sync::Arc;
|
|
use std::io::{self, Write};
|
|
use std::fs;
|
|
|
|
#[cfg(target_os = "macos")]
|
|
use std::env;
|
|
|
|
#[cfg(not(windows))]
|
|
use std::os::unix::io::AsRawFd;
|
|
|
|
#[cfg(target_os = "macos")]
|
|
use alacritty::locale;
|
|
use alacritty::{cli, event, die};
|
|
use alacritty::config::{self, Config, Monitor};
|
|
use alacritty::display::Display;
|
|
use alacritty::event_loop::{self, EventLoop, Msg};
|
|
use alacritty::logging;
|
|
use alacritty::panic;
|
|
use alacritty::sync::FairMutex;
|
|
use alacritty::term::Term;
|
|
use alacritty::tty;
|
|
use alacritty::util::fmt::Red;
|
|
use alacritty::message_bar::MessageBuffer;
|
|
|
|
fn main() {
|
|
panic::attach_handler();
|
|
|
|
// When linked with the windows subsystem windows won't automatically attach
|
|
// to the console of the parent process, so we do it explicitly. This fails
|
|
// silently if the parent has no console.
|
|
#[cfg(windows)]
|
|
unsafe { AttachConsole(ATTACH_PARENT_PROCESS); }
|
|
|
|
// Load command line options
|
|
let options = cli::Options::load();
|
|
|
|
// Setup storage for message UI
|
|
let message_buffer = MessageBuffer::new();
|
|
|
|
// Initialize the logger as soon as possible as to capture output from other subsystems
|
|
let log_file =
|
|
logging::initialize(&options, message_buffer.tx()).expect("Unable to initialize logger");
|
|
|
|
// Load configuration file
|
|
// If the file is a command line argument, we won't write a generated default file
|
|
let config_path = options.config_path()
|
|
.or_else(Config::installed_config)
|
|
.or_else(|| Config::write_defaults().ok())
|
|
.map(|path| path.to_path_buf());
|
|
let config = if let Some(path) = config_path {
|
|
Config::load_from(path).update_dynamic_title(&options)
|
|
} else {
|
|
error!("Unable to write the default config");
|
|
Config::default()
|
|
};
|
|
|
|
// Switch to home directory
|
|
#[cfg(target_os = "macos")]
|
|
env::set_current_dir(dirs::home_dir().unwrap()).unwrap();
|
|
// Set locale
|
|
#[cfg(target_os = "macos")]
|
|
locale::set_locale_environment();
|
|
|
|
// Store if log file should be deleted before moving config
|
|
let persistent_logging = options.persistent_logging || config.persistent_logging();
|
|
|
|
// Run alacritty
|
|
if let Err(err) = run(config, &options, message_buffer) {
|
|
die!("Alacritty encountered an unrecoverable error:\n\n\t{}\n", Red(err));
|
|
}
|
|
|
|
// Clean up logfile
|
|
if let Some(log_file) = log_file {
|
|
if !persistent_logging && fs::remove_file(&log_file).is_ok() {
|
|
let _ = writeln!(io::stdout(), "Deleted log file at {:?}", log_file);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Run Alacritty
|
|
///
|
|
/// Creates a window, the terminal state, pty, I/O event loop, input processor,
|
|
/// config change monitor, and runs the main display loop.
|
|
fn run(
|
|
mut config: Config,
|
|
options: &cli::Options,
|
|
message_buffer: MessageBuffer,
|
|
) -> Result<(), Box<dyn Error>> {
|
|
info!("Welcome to Alacritty");
|
|
if let Some(config_path) = config.path() {
|
|
info!("Configuration loaded from {:?}", config_path.display());
|
|
};
|
|
|
|
// Set environment variables
|
|
tty::setup_env(&config);
|
|
|
|
// Create a display.
|
|
//
|
|
// The display manages a window and can draw the terminal
|
|
let mut display = Display::new(&config, options)?;
|
|
|
|
info!(
|
|
"PTY Dimensions: {:?} x {:?}",
|
|
display.size().lines(),
|
|
display.size().cols()
|
|
);
|
|
|
|
// Create the terminal
|
|
//
|
|
// This object contains all of the state about what's being displayed. It's
|
|
// wrapped in a clonable mutex since both the I/O loop and display need to
|
|
// access it.
|
|
let terminal = Term::new(&config, display.size().to_owned(), message_buffer);
|
|
let terminal = Arc::new(FairMutex::new(terminal));
|
|
|
|
// Find the window ID for setting $WINDOWID
|
|
let window_id = display.get_window_id();
|
|
|
|
// Create the pty
|
|
//
|
|
// The pty forks a process to run the shell on the slave side of the
|
|
// pseudoterminal. A file descriptor for the master side is retained for
|
|
// reading/writing to the shell.
|
|
let pty = tty::new(&config, options, &display.size(), window_id);
|
|
|
|
// Get a reference to something that we can resize
|
|
//
|
|
// This exists because rust doesn't know the interface is thread-safe
|
|
// and we need to be able to resize the PTY from the main thread while the IO
|
|
// thread owns the EventedRW object.
|
|
#[cfg(windows)]
|
|
let mut resize_handle = pty.resize_handle();
|
|
#[cfg(not(windows))]
|
|
let mut resize_handle = pty.fd.as_raw_fd();
|
|
|
|
// Create the pseudoterminal I/O loop
|
|
//
|
|
// pty I/O is ran on another thread as to not occupy cycles used by the
|
|
// renderer and input processing. Note that access to the terminal state is
|
|
// synchronized since the I/O loop updates the state, and the display
|
|
// consumes it periodically.
|
|
let event_loop = EventLoop::new(
|
|
Arc::clone(&terminal),
|
|
display.notifier(),
|
|
pty,
|
|
options.ref_test,
|
|
);
|
|
|
|
// The event loop channel allows write requests from the event processor
|
|
// to be sent to the loop and ultimately written to the pty.
|
|
let loop_tx = event_loop.channel();
|
|
|
|
// Event processor
|
|
//
|
|
// Need the Rc<RefCell<_>> here since a ref is shared in the resize callback
|
|
let mut processor = event::Processor::new(
|
|
event_loop::Notifier(event_loop.channel()),
|
|
display.resize_channel(),
|
|
options,
|
|
&config,
|
|
options.ref_test,
|
|
display.size().to_owned(),
|
|
);
|
|
|
|
// Create a config monitor when config was loaded from path
|
|
//
|
|
// The monitor watches the config file for changes and reloads it. Pending
|
|
// config changes are processed in the main loop.
|
|
let config_monitor = match (options.live_config_reload, config.live_config_reload()) {
|
|
// Start monitor if CLI flag says yes
|
|
(Some(true), _) |
|
|
// Or if no CLI flag was passed and the config says yes
|
|
(None, true) => config.path()
|
|
.map(|path| config::Monitor::new(path, display.notifier())),
|
|
// Otherwise, don't start the monitor
|
|
_ => None,
|
|
};
|
|
|
|
// Kick off the I/O thread
|
|
let _io_thread = event_loop.spawn(None);
|
|
|
|
info!("Initialisation complete");
|
|
|
|
// Main display loop
|
|
loop {
|
|
// Process input and window events
|
|
let mut terminal_lock = processor.process_events(&terminal, display.window());
|
|
|
|
// Handle config reloads
|
|
if let Some(ref path) = config_monitor.as_ref().and_then(Monitor::pending) {
|
|
// Clear old config messages from bar
|
|
terminal_lock.message_buffer_mut().remove_topic(config::SOURCE_FILE_PATH);
|
|
|
|
if let Ok(new_config) = Config::reload_from(path) {
|
|
config = new_config.update_dynamic_title(options);
|
|
display.update_config(&config);
|
|
processor.update_config(&config);
|
|
terminal_lock.update_config(&config);
|
|
}
|
|
|
|
terminal_lock.dirty = true;
|
|
}
|
|
|
|
// Begin shutdown if the flag was raised
|
|
if terminal_lock.should_exit() || tty::process_should_exit() {
|
|
break;
|
|
}
|
|
|
|
// Maybe draw the terminal
|
|
if terminal_lock.needs_draw() {
|
|
// Try to update the position of the input method editor
|
|
#[cfg(not(windows))]
|
|
display.update_ime_position(&terminal_lock);
|
|
|
|
// Handle pending resize events
|
|
//
|
|
// The second argument is a list of types that want to be notified
|
|
// of display size changes.
|
|
display.handle_resize(&mut terminal_lock, &config, &mut resize_handle, &mut processor);
|
|
|
|
drop(terminal_lock);
|
|
|
|
// Draw the current state of the terminal
|
|
display.draw(&terminal, &config);
|
|
}
|
|
}
|
|
|
|
loop_tx
|
|
.send(Msg::Shutdown)
|
|
.expect("Error sending shutdown to event loop");
|
|
|
|
// FIXME patch notify library to have a shutdown method
|
|
// config_reloader.join().ok();
|
|
|
|
// Without explicitly detaching the console cmd won't redraw it's prompt
|
|
#[cfg(windows)]
|
|
unsafe { FreeConsole(); }
|
|
|
|
info!("Goodbye");
|
|
|
|
Ok(())
|
|
}
|