small changes

Cargo.toml

@@ -10,7 +10,6 @@ pangocairo = "0.17"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 memchr = "2"
-thiserror = "1.0.38"
 signal-hook = { version = "0.3", default-features = false }
 nix = { version = "0.26", default-features = false, features = ["fs", "poll"] }
 
@@ -21,3 +20,4 @@ wayrs-protocols = { version = "0.5", features = ["wlr-layer-shell-unstable-v1",
 [profile.release]
 lto = "fat"
 strip = true
+codegen-units = 1

src/main.rs

@@ -62,7 +62,7 @@ fn main() -> anyhow::Result<()> {
                     conn.flush(IoMode::Blocking)?;
                 }
                 Err(e) if e.kind() == ErrorKind::WouldBlock => (),
-                Err(e) => return Err(e.into()),
+                Err(e) => bail!(e),
             }
         }
 
@@ -72,7 +72,13 @@ fn main() -> anyhow::Result<()> {
         }
 
         if fds.len() > 2 && fds[2].any().unwrap_or(false) {
-            match state.shared_state.status_cmd.as_mut().unwrap().read() {
+            match state
+                .shared_state
+                .status_cmd
+                .as_mut()
+                .unwrap()
+                .receive_blocks()
+            {
                 Ok(None) => (),
                 Ok(Some(blocks)) => {
                     state.set_blocks(&mut conn, blocks);

src/status_cmd.rs

@@ -40,8 +40,8 @@ impl StatusCmd {
         })
     }
 
-    pub fn read(&mut self) -> Result<Option<Vec<Block>>> {
-        match read(self.output.as_raw_fd(), &mut self.buf) {
+    pub fn receive_blocks(&mut self) -> Result<Option<Vec<Block>>> {
+        match read_to_vec(self.output.as_raw_fd(), &mut self.buf) {
             Ok(0) => bail!("status command exited"),
             Ok(_n) => (),
             Err(Errno::EAGAIN) => return Ok(None),
@@ -57,7 +57,7 @@ impl StatusCmd {
 
     pub fn send_click_event(&mut self, event: &Event) -> Result<()> {
         if self.protocol.supports_clicks() {
-            writeln!(self.input, "{}", serde_json::to_string(event).unwrap())?;
+            writeln!(self.input, "{}", serde_json::to_string(event)?)?;
         }
         Ok(())
     }
@@ -66,7 +66,7 @@ impl StatusCmd {
 /// Read from a raw file descriptor to the vector.
 ///
 /// Appends data at the end of the buffer. Resizes vector as needed.
-pub fn read(fd: RawFd, buf: &mut Vec<u8>) -> nix::Result<usize> {
+pub fn read_to_vec(fd: RawFd, buf: &mut Vec<u8>) -> nix::Result<usize> {
     if buf.capacity() - buf.len() < 1024 {
         buf.reserve(buf.capacity().max(1024));
     }
@@ -79,12 +79,8 @@ pub fn read(fd: RawFd, buf: &mut Vec<u8>) -> nix::Result<usize> {
         )
     };
 
-    let read = Errno::result(res).map(|r| r as usize)?;
-    if read > 0 {
-        unsafe {
-            buf.set_len(buf.len() + read);
-        }
-    }
+    let read = Errno::result(res)? as usize;
+    unsafe { buf.set_len(buf.len() + read) };
 
     Ok(read)
 }