Added theme and dock anchor saving :D

crates/fs/Cargo.toml

@@ -15,6 +15,7 @@ util = { path = "../util" }
 anyhow = "1.0.57"
 async-trait = "0.1"
 futures = "0.3"
+tempfile = "3"
 fsevent = { path = "../fsevent" }
 lazy_static = "1.4.0"
 parking_lot = "0.11.1"

crates/fs/src/fs.rs

@@ -12,6 +12,7 @@ use rope::Rope;
 use smol::io::{AsyncReadExt, AsyncWriteExt};
 use std::borrow::Cow;
 use std::cmp;
+use std::io::Write;
 use std::sync::Arc;
 use std::{
     io,
@@ -20,6 +21,7 @@ use std::{
     pin::Pin,
     time::{Duration, SystemTime},
 };
+use tempfile::NamedTempFile;
 use util::ResultExt;
 
 #[cfg(any(test, feature = "test-support"))]
@@ -100,6 +102,7 @@ pub trait Fs: Send + Sync {
     async fn remove_file(&self, path: &Path, options: RemoveOptions) -> Result<()>;
     async fn open_sync(&self, path: &Path) -> Result<Box<dyn io::Read>>;
     async fn load(&self, path: &Path) -> Result<String>;
+    async fn atomic_write(&self, path: PathBuf, text: String) -> Result<()>;
     async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()>;
     async fn canonicalize(&self, path: &Path) -> Result<PathBuf>;
     async fn is_file(&self, path: &Path) -> bool;
@@ -260,6 +263,18 @@ impl Fs for RealFs {
         Ok(text)
     }
 
+    async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
+        smol::unblock(move || {
+            let mut tmp_file = NamedTempFile::new()?;
+            tmp_file.write_all(data.as_bytes())?;
+            tmp_file.persist(path)?;
+            Ok::<(), anyhow::Error>(())
+        })
+        .await?;
+
+        Ok(())
+    }
+
     async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()> {
         let buffer_size = text.summary().len.min(10 * 1024);
         let file = smol::fs::File::create(path).await?;
@@ -880,6 +895,14 @@ impl Fs for FakeFs {
         entry.file_content(&path).cloned()
     }
 
+    async fn atomic_write(&self, path: PathBuf, data: String) -> Result<()> {
+        self.simulate_random_delay().await;
+        let path = normalize_path(path.as_path());
+        self.insert_file(path, data.to_string()).await;
+
+        Ok(())
+    }
+
     async fn save(&self, path: &Path, text: &Rope, line_ending: LineEnding) -> Result<()> {
         self.simulate_random_delay().await;
         let path = normalize_path(path);