1use crate::{settings_store::SettingsStore, Settings};
2use anyhow::{Context, Result};
3use fs::Fs;
4use futures::{channel::mpsc, StreamExt};
5use gpui::{AppContext, BackgroundExecutor, UpdateGlobal};
6use std::{io::ErrorKind, path::PathBuf, sync::Arc, time::Duration};
7use util::{paths, ResultExt};
8
9pub const EMPTY_THEME_NAME: &str = "empty-theme";
10
11#[cfg(any(test, feature = "test-support"))]
12pub fn test_settings() -> String {
13 let mut value = crate::settings_store::parse_json_with_comments::<serde_json::Value>(
14 crate::default_settings().as_ref(),
15 )
16 .unwrap();
17 util::merge_non_null_json_value_into(
18 serde_json::json!({
19 "ui_font_family": "Courier",
20 "ui_font_features": {},
21 "ui_font_size": 14,
22 "buffer_font_family": "Courier",
23 "buffer_font_features": {},
24 "buffer_font_size": 14,
25 "theme": EMPTY_THEME_NAME,
26 }),
27 &mut value,
28 );
29 value.as_object_mut().unwrap().remove("languages");
30 serde_json::to_string(&value).unwrap()
31}
32
33pub fn watch_config_file(
34 executor: &BackgroundExecutor,
35 fs: Arc<dyn Fs>,
36 path: PathBuf,
37) -> mpsc::UnboundedReceiver<String> {
38 let (tx, rx) = mpsc::unbounded();
39 executor
40 .spawn(async move {
41 let (events, _) = fs.watch(&path, Duration::from_millis(100)).await;
42 futures::pin_mut!(events);
43
44 let contents = fs.load(&path).await.unwrap_or_default();
45 if tx.unbounded_send(contents).is_err() {
46 return;
47 }
48
49 loop {
50 if events.next().await.is_none() {
51 break;
52 }
53
54 if let Ok(contents) = fs.load(&path).await {
55 if tx.unbounded_send(contents).is_err() {
56 break;
57 }
58 }
59 }
60 })
61 .detach();
62 rx
63}
64
65pub fn handle_settings_file_changes(
66 mut user_settings_file_rx: mpsc::UnboundedReceiver<String>,
67 cx: &mut AppContext,
68) {
69 let user_settings_content = cx
70 .background_executor()
71 .block(user_settings_file_rx.next())
72 .unwrap();
73 SettingsStore::update_global(cx, |store, cx| {
74 store
75 .set_user_settings(&user_settings_content, cx)
76 .log_err();
77 });
78 cx.spawn(move |mut cx| async move {
79 while let Some(user_settings_content) = user_settings_file_rx.next().await {
80 let result = cx.update_global(|store: &mut SettingsStore, cx| {
81 store
82 .set_user_settings(&user_settings_content, cx)
83 .log_err();
84 cx.refresh();
85 });
86 if result.is_err() {
87 break; // App dropped
88 }
89 }
90 })
91 .detach();
92}
93
94async fn load_settings(fs: &Arc<dyn Fs>) -> Result<String> {
95 match fs.load(&paths::SETTINGS).await {
96 result @ Ok(_) => result,
97 Err(err) => {
98 if let Some(e) = err.downcast_ref::<std::io::Error>() {
99 if e.kind() == ErrorKind::NotFound {
100 return Ok(crate::initial_user_settings_content().to_string());
101 }
102 }
103 Err(err)
104 }
105 }
106}
107
108pub fn update_settings_file<T: Settings>(
109 fs: Arc<dyn Fs>,
110 cx: &mut AppContext,
111 update: impl 'static + Send + FnOnce(&mut T::FileContent),
112) {
113 cx.spawn(|cx| async move {
114 let old_text = load_settings(&fs).await?;
115 let new_text = cx.read_global(|store: &SettingsStore, _cx| {
116 store.new_text_for_update::<T>(old_text, update)
117 })?;
118 let initial_path = paths::SETTINGS.as_path();
119 if fs.is_file(initial_path).await {
120 let resolved_path = fs.canonicalize(initial_path).await.with_context(|| {
121 format!("Failed to canonicalize settings path {:?}", initial_path)
122 })?;
123
124 fs.atomic_write(resolved_path.clone(), new_text)
125 .await
126 .with_context(|| format!("Failed to write settings to file {:?}", resolved_path))?;
127 } else {
128 fs.atomic_write(initial_path.to_path_buf(), new_text)
129 .await
130 .with_context(|| format!("Failed to write settings to file {:?}", initial_path))?;
131 }
132
133 anyhow::Ok(())
134 })
135 .detach_and_log_err(cx);
136}