/
main.rs
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/
main.rs
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//! The `servo` test application.
//!
//! Creates a `Servo` instance with a simple implementation of
//! the compositor's `WindowMethods` to create a working web browser.
//!
//! This browser's implementation of `WindowMethods` is built on top
//! of [glutin], the cross-platform OpenGL utility and windowing
//! library.
//!
//! For the engine itself look next door in `components/servo/lib.rs`.
//!
//! [glutin]: https://github.com/tomaka/glutin
#![cfg_attr(feature = "unstable", feature(core_intrinsics))]
#[cfg(target_os = "android")]
extern crate android_injected_glue;
extern crate backtrace;
#[macro_use] extern crate bitflags;
extern crate compositing;
extern crate euclid;
#[cfg(target_os = "windows")] extern crate gdi32;
extern crate gleam;
extern crate glutin;
// The window backed by glutin
#[macro_use] extern crate log;
extern crate msg;
extern crate net_traits;
#[cfg(any(target_os = "linux", target_os = "macos"))] extern crate osmesa_sys;
extern crate script_traits;
extern crate servo;
extern crate servo_config;
extern crate servo_geometry;
extern crate servo_url;
#[cfg(all(feature = "unstable", not(target_os = "android")))]
#[macro_use]
extern crate sig;
extern crate style_traits;
extern crate tinyfiledialogs;
extern crate webrender_api;
#[cfg(target_os = "windows")] extern crate winapi;
#[cfg(target_os = "windows")] extern crate user32;
mod glutin_app;
use backtrace::Backtrace;
use servo::Servo;
use servo::compositing::windowing::WindowEvent;
#[cfg(target_os = "android")]
use servo::config;
use servo::config::opts::{self, ArgumentParsingResult, parse_url_or_filename};
use servo::config::servo_version;
use servo::ipc_channel::ipc;
use servo::servo_config::prefs::PREFS;
use servo::servo_url::ServoUrl;
use std::env;
use std::panic;
use std::process;
use std::rc::Rc;
use std::thread;
pub mod platform {
#[cfg(target_os = "macos")]
pub use platform::macos::deinit;
#[cfg(target_os = "macos")]
pub mod macos;
#[cfg(not(target_os = "macos"))]
pub fn deinit() {}
}
#[cfg(all(feature = "unstable", not(target_os = "android")))]
fn install_crash_handler() {
use backtrace::Backtrace;
use sig::ffi::Sig;
use std::intrinsics::abort;
use std::thread;
fn handler(_sig: i32) {
let name = thread::current()
.name()
.map(|n| format!(" for thread \"{}\"", n))
.unwrap_or("".to_owned());
println!("Stack trace{}\n{:?}", name, Backtrace::new());
unsafe {
// N.B. Using process::abort() here causes the crash handler to be
// triggered recursively.
abort();
}
}
signal!(Sig::SEGV, handler); // handle segfaults
signal!(Sig::ILL, handler); // handle stack overflow and unsupported CPUs
signal!(Sig::IOT, handler); // handle double panics
signal!(Sig::BUS, handler); // handle invalid memory access
}
#[cfg(any(not(feature = "unstable"), target_os = "android"))]
fn install_crash_handler() {}
fn main() {
install_crash_handler();
// Parse the command line options and store them globally
let opts_result = opts::from_cmdline_args(&*args());
let content_process_token = if let ArgumentParsingResult::ContentProcess(token) = opts_result {
Some(token)
} else {
if opts::get().is_running_problem_test && ::std::env::var("RUST_LOG").is_err() {
::std::env::set_var("RUST_LOG", "compositing::constellation");
}
None
};
// TODO: once log-panics is released, can this be replaced by
// log_panics::init()?
panic::set_hook(Box::new(|info| {
warn!("Panic hook called.");
let msg = match info.payload().downcast_ref::<&'static str>() {
Some(s) => *s,
None => {
match info.payload().downcast_ref::<String>() {
Some(s) => &**s,
None => "Box<Any>",
}
},
};
let current_thread = thread::current();
let name = current_thread.name().unwrap_or("<unnamed>");
if let Some(location) = info.location() {
println!("{} (thread {}, at {}:{})",
msg,
name,
location.file(),
location.line());
} else {
println!("{} (thread {})", msg, name);
}
if env::var("RUST_BACKTRACE").is_ok() {
println!("{:?}", Backtrace::new());
}
error!("{}", msg);
}));
setup_logging();
if let Some(token) = content_process_token {
return servo::run_content_process(token);
}
if opts::get().is_printing_version {
println!("{}", servo_version());
process::exit(0);
}
let window = glutin_app::create_window();
// If the url is not provided, we fallback to the homepage in PREFS,
// or a blank page in case the homepage is not set either.
let cwd = env::current_dir().unwrap();
let cmdline_url = opts::get().url.clone();
let pref_url = PREFS.get("shell.homepage").as_string()
.and_then(|str| parse_url_or_filename(&cwd, str).ok());
let blank_url = ServoUrl::parse("about:blank").ok();
let target_url = cmdline_url.or(pref_url).or(blank_url).unwrap();
// Our wrapper around `ServoWrapper` that also implements some
// callbacks required by the glutin window implementation.
let mut servo_wrapper = ServoWrapper {
servo: Servo::new(window.clone())
};
let (sender, receiver) = ipc::channel().unwrap();
servo_wrapper.servo.handle_events(vec![WindowEvent::NewBrowser(target_url, sender)]);
let browser_id = receiver.recv().unwrap();
window.set_browser_id(browser_id);
servo_wrapper.servo.handle_events(vec![WindowEvent::SelectBrowser(browser_id)]);
servo_wrapper.servo.setup_logging();
register_glutin_resize_handler(&window, &mut servo_wrapper);
// Feed events from the window to the browser until the browser
// says to stop.
loop {
let should_continue = servo_wrapper.servo.handle_events(window.wait_events());
if !should_continue {
break;
}
}
unregister_glutin_resize_handler(&window);
servo_wrapper.servo.deinit();
platform::deinit()
}
fn register_glutin_resize_handler(window: &Rc<glutin_app::window::Window>, browser: &mut ServoWrapper) {
unsafe {
window.set_nested_event_loop_listener(browser);
}
}
fn unregister_glutin_resize_handler(window: &Rc<glutin_app::window::Window>) {
unsafe {
window.remove_nested_event_loop_listener();
}
}
struct ServoWrapper {
servo: Servo<glutin_app::window::Window>,
}
impl glutin_app::NestedEventLoopListener for ServoWrapper {
fn handle_event_from_nested_event_loop(&mut self, event: WindowEvent) -> bool {
let is_resize = match event {
WindowEvent::Resize => true,
_ => false,
};
if !self.servo.handle_events(vec![event]) {
return false;
}
if is_resize {
self.servo.repaint_synchronously()
}
true
}
}
#[cfg(target_os = "android")]
fn setup_logging() {
// Piping logs from stdout/stderr to logcat happens in android_injected_glue.
::std::env::set_var("RUST_LOG", "error");
unsafe { android_injected_glue::ffi::app_dummy() };
}
#[cfg(not(target_os = "android"))]
fn setup_logging() {}
#[cfg(target_os = "android")]
/// Attempt to read parameters from a file since they are not passed to us in Android environments.
/// The first line should be the "servo" argument and the last should be the URL to load.
/// Blank lines and those beginning with a '#' are ignored.
/// Each line should be a separate parameter as would be parsed by the shell.
/// For example, "servo -p 10 http://en.wikipedia.org/wiki/Rust" would take 4 lines.
fn args() -> Vec<String> {
use std::error::Error;
use std::fs::File;
use std::io::{BufRead, BufReader};
let mut params_file = config::basedir::default_config_dir().unwrap();
params_file.push("android_params");
match File::open(params_file.to_str().unwrap()) {
Ok(f) => {
let mut vec = Vec::new();
let file = BufReader::new(&f);
for line in file.lines() {
let l = line.unwrap().trim().to_owned();
// ignore blank lines and those that start with a '#'
match l.is_empty() || l.as_bytes()[0] == b'#' {
true => (),
false => vec.push(l),
}
}
vec
},
Err(e) => {
debug!("Failed to open params file '{}': {}",
params_file.to_str().unwrap(),
Error::description(&e));
vec!["servo".to_owned(), "http://en.wikipedia.org/wiki/Rust".to_owned()]
},
}
}
#[cfg(not(target_os = "android"))]
fn args() -> Vec<String> {
use std::env;
env::args().collect()
}
#[cfg(target_os = "android")]
#[no_mangle]
#[inline(never)]
#[allow(non_snake_case)]
pub extern "C" fn android_main(app: *mut ()) {
android_injected_glue::android_main2(app as *mut _, move |_, _| main());
}
// These functions aren't actually called. They are here as a link
// hack because Skia references them.
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn glBindVertexArrayOES(_array: usize)
{
unimplemented!()
}
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn glDeleteVertexArraysOES(_n: isize, _arrays: *const ())
{
unimplemented!()
}
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn glGenVertexArraysOES(_n: isize, _arrays: *const ())
{
unimplemented!()
}
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn glRenderbufferStorageMultisampleIMG(_: isize, _: isize, _: isize, _: isize, _: isize)
{
unimplemented!()
}
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn glFramebufferTexture2DMultisampleIMG(_: isize, _: isize, _: isize, _: isize, _: isize, _: isize)
{
unimplemented!()
}
#[allow(non_snake_case)]
#[no_mangle]
pub extern "C" fn glDiscardFramebufferEXT(_: isize, _: isize, _: *const ())
{
unimplemented!()
}