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use std::collections::HashMap;
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use std::convert::TryInto;
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use rmpv::Value;
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use nvim_rs::Neovim;
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use nvim_rs::compat::tokio::Compat;
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use flexi_logger::{Logger, Criterion, Naming, Cleanup};
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use tokio::process::ChildStdin;
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use parking_lot::Mutex;
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use log::warn;
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use crate::error_handling::ResultPanicExplanation;
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lazy_static! {
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pub static ref SETTINGS: Settings = Settings::new();
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}
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#[derive(Debug)]
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pub enum Setting {
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Bool(bool),
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U16(u16),
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String(String)
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}
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impl Setting {
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fn new_bool(value: bool) -> Setting {
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Setting::Bool(value)
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}
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pub fn read_bool(&self) -> bool {
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if let Setting::Bool(value) = self {
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*value
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} else {
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panic!("Could not read setting as bool");
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}
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}
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fn new_u16(value: u16) -> Setting {
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Setting::U16(value)
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}
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pub fn read_u16(&self) -> u16 {
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if let Setting::U16(value) = self {
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*value
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} else {
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panic!("Could not read setting as u16");
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}
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}
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fn new_string(value: String) -> Setting {
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Setting::String(value)
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}
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pub fn read_string(&self) -> String {
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if let Setting::String(value) = self {
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value.clone()
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} else {
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panic!("Could not read setting as string");
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}
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}
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fn parse(&mut self, value: Value) {
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match self {
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Setting::Bool(internal_bool) => {
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if let Ok(value) = value.try_into() {
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let intermediate: u64 = value;
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*internal_bool = intermediate != 0;
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}
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},
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Setting::U16(internal_u16) => {
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if let Ok(value) = value.try_into() {
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let intermediate: u64 = value;
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*internal_u16 = intermediate as u16;
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}
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},
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Setting::String(internal_string) => {
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if let Ok(value) = value.try_into() {
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let intermediate: String = value;
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*internal_string = intermediate;
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}
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}
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}
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}
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fn unparse(&self) -> Value {
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match self {
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Setting::Bool(internal_bool) => {
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let value = if *internal_bool {
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1
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} else {
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0
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};
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Value::from(value)
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},
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Setting::U16(internal_u16) => Value::from(*internal_u16),
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Setting::String(internal_string) => Value::from(internal_string.as_str()),
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}
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}
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fn clone(&self) -> Setting {
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match self {
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Setting::Bool(_) => Setting::new_bool(self.read_bool()),
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Setting::U16(_) => Setting::new_u16(self.read_u16()),
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Setting::String(_) => Setting::new_string(self.read_string()),
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}
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}
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}
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pub struct Settings {
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pub neovim_arguments: Vec<String>,
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pub settings: Mutex<HashMap<String, Setting>>
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}
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impl Settings {
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pub async fn read_initial_values(&self, nvim: &Neovim<Compat<ChildStdin>>) {
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let keys : Vec<String> = self.settings.lock().keys().cloned().collect();
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for name in keys {
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let variable_name = format!("neovide_{}", name.to_string());
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match nvim.get_var(&variable_name).await {
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Ok(value) => self.settings.lock().get_mut(&name).unwrap().parse(value),
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Err(error) => {
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warn!("Initial value load failed for {}: {}", name, error);
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let setting = self.get(&name);
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nvim.set_var(&variable_name, setting.unparse()).await.ok();
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}
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}
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}
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}
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pub async fn setup_changed_listeners(&self, nvim: &Neovim<Compat<ChildStdin>>) {
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let keys : Vec<String> = self.settings.lock().keys().cloned().collect();
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for name in keys {
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let vimscript =
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format!("function NeovideNotify{}Changed(d, k, z)\n", name) +
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&format!(" call rpcnotify(1, \"setting_changed\", \"{}\", g:neovide_{})\n", name, name) +
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"endfunction\n" +
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&format!("call dictwatcheradd(g:, \"neovide_{}\", \"NeovideNotify{}Changed\")", name, name);
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nvim.exec(&vimscript, false).await
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.unwrap_or_explained_panic(&format!("Could not setup setting notifier for {}", name));
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}
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}
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pub fn handle_changed_notification(&self, arguments: Vec<Value>) {
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let mut arguments = arguments.into_iter();
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let (name, value) = (arguments.next().unwrap(), arguments.next().unwrap());
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let name: Result<String, _>= name.try_into();
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let name = name.unwrap();
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self.settings.lock().get_mut(&name).unwrap().parse(value);
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}
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pub fn get(&self, name: &str) -> Setting {
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let settings = self.settings.lock();
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let setting = settings.get(name).expect(&format!("Could not find option {}", name));
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setting.clone()
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}
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pub fn new() -> Settings {
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let mut no_idle = false;
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let mut buffer_frames = 1;
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let neovim_arguments = std::env::args().filter(|arg| {
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if arg == "--log" {
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Logger::with_str("neovide")
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.log_to_file()
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.rotate(Criterion::Size(10_000_000), Naming::Timestamps, Cleanup::KeepLogFiles(1))
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.start()
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.expect("Could not start logger");
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false
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} else if arg == "--noIdle" {
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no_idle = true;
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false
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} else if arg == "--extraBufferFrames" {
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buffer_frames = 60;
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false
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} else {
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true
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}
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}).collect::<Vec<String>>();
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let mut settings = HashMap::new();
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settings.insert("no_idle".to_string(), Setting::new_bool(no_idle));
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settings.insert("extra_buffer_frames".to_string(), Setting::new_u16(buffer_frames));
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Settings { neovim_arguments, settings: Mutex::new(settings) }
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}
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}
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