mirror of
https://github.com/servo/servo.git
synced 2025-06-06 16:45:39 +00:00
api: Flatten and simplify Servo preferences (#34966)
Flatten and simplify Servo's preferences code. In addition, have both preferences and options passed in as arguments to `Servo::new()` and make sure not to use the globally set preferences in `servoshell` (as much as possible now). Instead of a complex procedural macro to generate preferences, just expose a very simple derive macro that adds string based getters and setters. - All command-line parsing is moved to servoshell. - There is no longer the concept of a missing preference. - Preferences no longer have to be part of the resources bundle because they now have reasonable default values. - servoshell specific preferences are no longer part of the preferences exposed by the Servo API. Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson
GitHub
parent
c4c85affb5
commit
0e616e0c5d
316 changed files with 2088 additions and 3235 deletions
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@ -6,22 +6,13 @@
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//! from command line arguments.
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use std::default::Default;
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use std::fs::{self, File};
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use std::io::Read;
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use std::path::{Path, PathBuf};
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use std::sync::atomic::{AtomicBool, Ordering};
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use std::path::PathBuf;
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use std::sync::{LazyLock, RwLock, RwLockReadGuard};
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use std::{env, process};
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use euclid::Size2D;
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use getopts::{Matches, Options};
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use log::error;
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use serde::{Deserialize, Serialize};
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use servo_geometry::DeviceIndependentPixel;
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use servo_url::ServoUrl;
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use url::{self, Url};
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use crate::{pref, set_pref};
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/// Global flags for Servo, currently set on the command line.
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#[derive(Clone, Debug, Deserialize, Serialize)]
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@ -69,13 +60,6 @@ pub struct Opts {
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/// behavior for debugging purposes.
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pub debug: DebugOptions,
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/// Port number to start a server to listen to remote Firefox devtools connections.
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/// 0 for random port.
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pub devtools_port: u16,
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/// Start the devtools server at startup
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pub devtools_server_enabled: bool,
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/// `None` to disable WebDriver or `Some` with a port number to start a server to listen to
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/// remote WebDriver commands.
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pub webdriver_port: Option<u16>,
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@ -113,9 +97,6 @@ pub struct Opts {
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/// Directory for a default config directory
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pub config_dir: Option<PathBuf>,
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/// Print the version and exit.
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pub is_printing_version: bool,
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/// Path to PEM encoded SSL CA certificate store.
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pub certificate_path: Option<String>,
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@ -137,14 +118,6 @@ pub struct Opts {
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pub print_pwm: bool,
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}
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fn print_usage(app: &str, opts: &Options) {
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let message = format!(
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"Usage: {} [ options ... ] [URL]\n\twhere options include",
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app
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);
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println!("{}", opts.usage(&message));
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}
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/// Debug options for Servo, currently set on the command line with -Z
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#[derive(Clone, Debug, Default, Deserialize, Serialize)]
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pub struct DebugOptions {
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@ -278,104 +251,6 @@ impl DebugOptions {
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Ok(())
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}
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fn print_usage(app: &str) {
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fn print_option(name: &str, description: &str) {
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println!("\t{:<35} {}", name, description);
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}
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println!(
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"Usage: {} debug option,[options,...]\n\twhere options include\n\nOptions:",
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app
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);
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print_option(
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"bubble-inline-sizes-separately",
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"Bubble intrinsic widths separately like other engines.",
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);
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print_option(
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"convert-mouse-to-touch",
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"Send touch events instead of mouse events",
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);
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print_option(
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"disable-canvas-aa",
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"Disable antialiasing on the HTML canvas element.",
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);
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print_option(
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"disable-share-style-cache",
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"Disable the style sharing cache.",
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);
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print_option(
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"disable-subpixel-aa",
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"Disable subpixel text antialiasing overriding preference.",
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);
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print_option("disable-text-aa", "Disable antialiasing of rendered text.");
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print_option(
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"dump-stacking-context-tree",
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"Print the stacking context tree after each layout.",
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);
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print_option(
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"dump-display-list",
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"Print the display list after each layout.",
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);
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print_option(
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"dump-display-list-json",
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"Print the display list in JSON form.",
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);
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print_option(
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"dump-flow-tree",
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"Print the flow tree (Layout 2013) or fragment tree (Layout 2020) after each layout.",
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);
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print_option(
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"dump-rule-tree",
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"Print the style rule tree after each layout.",
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);
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print_option(
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"dump-style-tree",
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"Print the DOM with computed styles after each restyle.",
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);
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print_option("dump-style-stats", "Print style statistics each restyle.");
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print_option("gc-profile", "Log GC passes and their durations.");
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print_option(
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"load-webfonts-synchronously",
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"Load web fonts synchronously to avoid non-deterministic network-driven reflows",
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);
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print_option(
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"parallel-display-list-building",
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"Build display lists in parallel.",
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);
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print_option("precache-shaders", "Compile all shaders during init.");
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print_option(
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"profile-script-events",
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"Enable profiling of script-related events.",
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);
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print_option(
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"relayout-event",
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"Print notifications when there is a relayout.",
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);
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print_option("replace-surrogates", "Replace unpaires surrogates in DOM strings with U+FFFD. See https://github.com/servo/servo/issues/6564");
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print_option(
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"show-fragment-borders",
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"Paint borders along fragment boundaries.",
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);
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print_option(
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"show-parallel-layout",
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"Mark which thread laid each flow out with colors.",
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);
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print_option(
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"signpost",
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"Emit native OS signposts for profile events (currently macOS only)",
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);
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print_option(
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"trace-layout",
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"Write layout trace to an external file for debugging.",
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);
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print_option("wr-stats", "Show WebRender profiler on screen.");
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println!();
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process::exit(0)
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}
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}
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#[derive(Clone, Debug, Deserialize, Serialize)]
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@ -385,18 +260,6 @@ pub enum OutputOptions {
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Stdout(f64),
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}
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fn args_fail(msg: &str) -> ! {
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eprintln!("{}", msg);
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process::exit(1)
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}
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static MULTIPROCESS: AtomicBool = AtomicBool::new(false);
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#[inline]
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pub fn multiprocess() -> bool {
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MULTIPROCESS.load(Ordering::Relaxed)
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}
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pub fn default_opts() -> Opts {
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Opts {
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legacy_layout: false,
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@ -410,8 +273,6 @@ pub fn default_opts() -> Opts {
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output_file: None,
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headless: false,
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hard_fail: true,
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devtools_port: 0,
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devtools_server_enabled: false,
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webdriver_port: None,
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initial_window_size: Size2D::new(1024, 740),
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screen_size_override: None,
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@ -423,7 +284,6 @@ pub fn default_opts() -> Opts {
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debug: Default::default(),
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exit_after_load: false,
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config_dir: None,
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is_printing_version: false,
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shaders_dir: None,
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certificate_path: None,
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ignore_certificate_errors: false,
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@ -434,392 +294,12 @@ pub fn default_opts() -> Opts {
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}
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}
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pub fn from_cmdline_args(mut opts: Options, args: &[String]) -> ArgumentParsingResult {
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let (app_name, args) = args.split_first().unwrap();
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opts.optflag("", "legacy-layout", "Use the legacy layout engine");
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opts.optopt("o", "output", "Output file", "output.png");
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opts.optopt("s", "size", "Size of tiles", "512");
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opts.optflagopt(
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"p",
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"profile",
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"Time profiler flag and either a TSV output filename \
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OR an interval for output to Stdout (blank for Stdout with interval of 5s)",
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"10 \
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OR time.tsv",
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);
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opts.optflagopt(
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"",
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"profiler-trace-path",
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"Path to dump a self-contained HTML timeline of profiler traces",
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"",
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);
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opts.optflagopt(
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"m",
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"memory-profile",
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"Memory profiler flag and output interval",
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"10",
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);
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opts.optflag("x", "exit", "Exit after load flag");
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opts.optopt(
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"y",
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"layout-threads",
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"Number of threads to use for layout",
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"1",
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);
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opts.optflag(
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"i",
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"nonincremental-layout",
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"Enable to turn off incremental layout.",
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);
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opts.optflagopt(
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"",
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"userscripts",
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"Uses userscripts in resources/user-agent-js, or a specified full path",
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"",
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);
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opts.optmulti(
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"",
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"user-stylesheet",
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"A user stylesheet to be added to every document",
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"file.css",
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);
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opts.optopt(
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"",
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"shaders",
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"Shaders will be loaded from the specified directory instead of using the builtin ones.",
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"",
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);
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opts.optflag("z", "headless", "Headless mode");
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opts.optflag(
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"f",
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"hard-fail",
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"Exit on thread failure instead of displaying about:failure",
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);
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opts.optflag(
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"F",
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"soft-fail",
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"Display about:failure on thread failure instead of exiting",
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);
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opts.optflagopt("", "devtools", "Start remote devtools server on port", "0");
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opts.optflagopt(
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"",
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"webdriver",
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"Start remote WebDriver server on port",
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"7000",
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);
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opts.optopt(
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"",
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"window-size",
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"Set the initial window size in logical (device independenrt) pixels",
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"1024x740",
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);
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opts.optopt(
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"",
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"screen-size",
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"Override the screen resolution in logical (device independent) pixels",
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"1024x768",
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);
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opts.optflag("M", "multiprocess", "Run in multiprocess mode");
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opts.optflag("B", "bhm", "Background Hang Monitor enabled");
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opts.optflag("S", "sandbox", "Run in a sandbox if multiprocess");
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opts.optopt(
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"",
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"random-pipeline-closure-probability",
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"Probability of randomly closing a pipeline (for testing constellation hardening).",
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"0.0",
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);
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opts.optopt(
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"",
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"random-pipeline-closure-seed",
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"A fixed seed for repeatbility of random pipeline closure.",
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"",
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);
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opts.optmulti(
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"Z",
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"debug",
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"A comma-separated string of debug options. Pass help to show available options.",
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"",
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);
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opts.optflag("h", "help", "Print this message");
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opts.optopt(
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"",
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"resources-path",
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"Path to find static resources",
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"/home/servo/resources",
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);
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opts.optopt(
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"",
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"certificate-path",
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"Path to find SSL certificates",
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"/home/servo/resources/certs",
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);
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opts.optflag(
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"",
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"ignore-certificate-errors",
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"Whether or not to completely ignore certificate errors",
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);
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opts.optopt(
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"",
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"content-process",
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"Run as a content process and connect to the given pipe",
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"servo-ipc-channel.abcdefg",
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);
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opts.optopt(
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"",
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"config-dir",
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"config directory following xdg spec on linux platform",
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"",
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);
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opts.optflag("v", "version", "Display servo version information");
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opts.optflag("", "unminify-js", "Unminify Javascript");
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opts.optflag("", "print-pwm", "Print Progressive Web Metrics");
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opts.optopt(
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"",
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"local-script-source",
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"Directory root with unminified scripts",
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"",
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);
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opts.optflag("", "unminify-css", "Unminify Css");
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let opt_match = match opts.parse(args) {
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Ok(m) => m,
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Err(f) => args_fail(&f.to_string()),
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};
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if opt_match.opt_present("h") || opt_match.opt_present("help") {
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print_usage(app_name, &opts);
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process::exit(0);
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};
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// If this is the content process, we'll receive the real options over IPC. So just fill in
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// some dummy options for now.
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if let Some(content_process) = opt_match.opt_str("content-process") {
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MULTIPROCESS.store(true, Ordering::SeqCst);
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return ArgumentParsingResult::ContentProcess(opt_match, content_process);
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}
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let mut debug_options = DebugOptions::default();
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for debug_string in opt_match.opt_strs("Z") {
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if let Err(e) = debug_options.extend(debug_string) {
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args_fail(&format!("error: unrecognized debug option: {}", e));
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}
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}
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if debug_options.help {
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DebugOptions::print_usage(app_name)
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}
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let tile_size: usize = match opt_match.opt_str("s") {
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Some(tile_size_str) => tile_size_str
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.parse()
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.unwrap_or_else(|err| args_fail(&format!("Error parsing option: -s ({})", err))),
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None => 512,
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};
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// If only the flag is present, default to a 5 second period for both profilers
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let time_profiling = if opt_match.opt_present("p") {
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match opt_match.opt_str("p") {
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Some(argument) => match argument.parse::<f64>() {
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Ok(interval) => Some(OutputOptions::Stdout(interval)),
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Err(_) => match ServoUrl::parse(&argument) {
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Ok(_) => panic!("influxDB isn't supported anymore"),
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Err(_) => Some(OutputOptions::FileName(argument)),
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},
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},
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None => Some(OutputOptions::Stdout(5.0)),
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}
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} else {
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// if the p option doesn't exist:
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None
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};
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if let Some(ref time_profiler_trace_path) = opt_match.opt_str("profiler-trace-path") {
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let mut path = PathBuf::from(time_profiler_trace_path);
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path.pop();
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if let Err(why) = fs::create_dir_all(&path) {
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error!(
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"Couldn't create/open {:?}: {:?}",
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Path::new(time_profiler_trace_path).to_string_lossy(),
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why
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);
|
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}
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}
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|
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let mem_profiler_period = opt_match.opt_default("m", "5").map(|period| {
|
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period
|
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.parse()
|
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.unwrap_or_else(|err| args_fail(&format!("Error parsing option: -m ({})", err)))
|
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});
|
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|
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let mut layout_threads: Option<usize> = opt_match.opt_str("y").map(|layout_threads_str| {
|
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layout_threads_str
|
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.parse()
|
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.unwrap_or_else(|err| args_fail(&format!("Error parsing option: -y ({})", err)))
|
||||
});
|
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|
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let nonincremental_layout = opt_match.opt_present("i");
|
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|
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let random_pipeline_closure_probability = opt_match
|
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.opt_str("random-pipeline-closure-probability")
|
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.map(|prob| {
|
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prob.parse().unwrap_or_else(|err| {
|
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args_fail(&format!(
|
||||
"Error parsing option: --random-pipeline-closure-probability ({})",
|
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err
|
||||
))
|
||||
})
|
||||
});
|
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|
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let random_pipeline_closure_seed =
|
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opt_match
|
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.opt_str("random-pipeline-closure-seed")
|
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.map(|seed| {
|
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seed.parse().unwrap_or_else(|err| {
|
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args_fail(&format!(
|
||||
"Error parsing option: --random-pipeline-closure-seed ({})",
|
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err
|
||||
))
|
||||
})
|
||||
});
|
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|
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if debug_options.trace_layout {
|
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layout_threads = Some(1);
|
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}
|
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|
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let (devtools_server_enabled, devtools_port) = if opt_match.opt_present("devtools") {
|
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let port = opt_match
|
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.opt_str("devtools")
|
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.map(|port| {
|
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port.parse().unwrap_or_else(|err| {
|
||||
args_fail(&format!("Error parsing option: --devtools ({})", err))
|
||||
})
|
||||
})
|
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.unwrap_or(pref!(devtools.server.port));
|
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(true, port as u16)
|
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} else {
|
||||
(
|
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pref!(devtools.server.enabled),
|
||||
pref!(devtools.server.port) as u16,
|
||||
)
|
||||
};
|
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|
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let webdriver_port = opt_match.opt_default("webdriver", "7000").map(|port| {
|
||||
port.parse().unwrap_or_else(|err| {
|
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args_fail(&format!("Error parsing option: --webdriver ({})", err))
|
||||
})
|
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});
|
||||
|
||||
let parse_resolution_string = |string: String| {
|
||||
let components: Vec<u32> = string
|
||||
.split('x')
|
||||
.map(|component| {
|
||||
component.parse().unwrap_or_else(|error| {
|
||||
args_fail(&format!("Error parsing resolution '{string}': {error}"));
|
||||
})
|
||||
})
|
||||
.collect();
|
||||
Size2D::new(components[0], components[1])
|
||||
};
|
||||
|
||||
let screen_size_override = opt_match
|
||||
.opt_str("screen-size")
|
||||
.map(parse_resolution_string);
|
||||
|
||||
// Make sure the default window size is not larger than any provided screen size.
|
||||
let default_window_size = Size2D::new(1024, 740);
|
||||
let default_window_size = screen_size_override
|
||||
.map_or(default_window_size, |screen_size_override| {
|
||||
default_window_size.min(screen_size_override)
|
||||
});
|
||||
|
||||
let initial_window_size = opt_match
|
||||
.opt_str("window-size")
|
||||
.map_or(default_window_size, parse_resolution_string);
|
||||
|
||||
if opt_match.opt_present("M") {
|
||||
MULTIPROCESS.store(true, Ordering::SeqCst)
|
||||
}
|
||||
|
||||
let user_stylesheets = opt_match
|
||||
.opt_strs("user-stylesheet")
|
||||
.iter()
|
||||
.map(|filename| {
|
||||
let cwd = env::current_dir().unwrap();
|
||||
let path = cwd.join(filename);
|
||||
let url = ServoUrl::from_url(Url::from_file_path(&path).unwrap());
|
||||
let mut contents = Vec::new();
|
||||
File::open(path)
|
||||
.unwrap_or_else(|err| args_fail(&format!("Couldn't open {}: {}", filename, err)))
|
||||
.read_to_end(&mut contents)
|
||||
.unwrap_or_else(|err| args_fail(&format!("Couldn't read {}: {}", filename, err)));
|
||||
(contents, url)
|
||||
})
|
||||
.collect();
|
||||
|
||||
let is_printing_version = opt_match.opt_present("v") || opt_match.opt_present("version");
|
||||
|
||||
let legacy_layout = opt_match.opt_present("legacy-layout");
|
||||
if legacy_layout {
|
||||
set_pref!(layout.legacy_layout, true);
|
||||
}
|
||||
|
||||
let opts = Opts {
|
||||
debug: debug_options.clone(),
|
||||
legacy_layout,
|
||||
tile_size,
|
||||
time_profiling,
|
||||
time_profiler_trace_path: opt_match.opt_str("profiler-trace-path"),
|
||||
mem_profiler_period,
|
||||
nonincremental_layout,
|
||||
userscripts: opt_match.opt_default("userscripts", ""),
|
||||
user_stylesheets,
|
||||
output_file: opt_match.opt_str("o"),
|
||||
headless: opt_match.opt_present("z"),
|
||||
hard_fail: opt_match.opt_present("f") && !opt_match.opt_present("F"),
|
||||
devtools_port,
|
||||
devtools_server_enabled,
|
||||
webdriver_port,
|
||||
initial_window_size,
|
||||
screen_size_override,
|
||||
multiprocess: opt_match.opt_present("M"),
|
||||
background_hang_monitor: opt_match.opt_present("B"),
|
||||
sandbox: opt_match.opt_present("S"),
|
||||
random_pipeline_closure_probability,
|
||||
random_pipeline_closure_seed,
|
||||
exit_after_load: opt_match.opt_present("x"),
|
||||
config_dir: opt_match.opt_str("config-dir").map(Into::into),
|
||||
is_printing_version,
|
||||
shaders_dir: opt_match.opt_str("shaders").map(Into::into),
|
||||
certificate_path: opt_match.opt_str("certificate-path"),
|
||||
ignore_certificate_errors: opt_match.opt_present("ignore-certificate-errors"),
|
||||
unminify_js: opt_match.opt_present("unminify-js"),
|
||||
local_script_source: opt_match.opt_str("local-script-source"),
|
||||
unminify_css: opt_match.opt_present("unminify-css"),
|
||||
print_pwm: opt_match.opt_present("print-pwm"),
|
||||
};
|
||||
|
||||
set_options(opts);
|
||||
|
||||
if let Some(layout_threads) = layout_threads {
|
||||
set_pref!(layout.threads, layout_threads as i64);
|
||||
}
|
||||
|
||||
ArgumentParsingResult::ChromeProcess(opt_match)
|
||||
}
|
||||
|
||||
pub enum ArgumentParsingResult {
|
||||
ChromeProcess(Matches),
|
||||
ContentProcess(Matches, String),
|
||||
}
|
||||
|
||||
// Make Opts available globally. This saves having to clone and pass
|
||||
// opts everywhere it is used, which gets particularly cumbersome
|
||||
// when passing through the DOM structures.
|
||||
static OPTIONS: LazyLock<RwLock<Opts>> = LazyLock::new(|| RwLock::new(default_opts()));
|
||||
|
||||
pub fn set_options(opts: Opts) {
|
||||
MULTIPROCESS.store(opts.multiprocess, Ordering::SeqCst);
|
||||
*OPTIONS.write().unwrap() = opts;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue