Clippy run

src/audio_backend/portaudio.rs

@@ -92,7 +92,7 @@ impl <'a> Sink for PortAudioSink<'a> {
         Ok(())
     }
     fn write(&mut self, data: &[i16]) -> io::Result<()> {
-        match self.0.as_mut().unwrap().write(&data) {
+        match self.0.as_mut().unwrap().write(data) {
             Ok(_) => (),
             Err(portaudio::PaError::OutputUnderflowed) =>
                 error!("PortAudio write underflow"),

src/audio_key.rs

@@ -42,7 +42,7 @@ impl AudioKeyManager {
         }
     }
 
-    pub fn request<'a>(&self, track: SpotifyId, file: FileId) -> AudioKeyFuture<AudioKey> {
+    pub fn request(&self, track: SpotifyId, file: FileId) -> AudioKeyFuture<AudioKey> {
         let (tx, rx) = oneshot::channel();
 
         let seq = self.lock(move |inner| {
@@ -55,7 +55,7 @@ impl AudioKeyManager {
         AudioKeyFuture(rx)
     }
 
-    fn send_key_request<'a>(&self, seq: u32, track: SpotifyId, file: FileId) {
+    fn send_key_request(&self, seq: u32, track: SpotifyId, file: FileId) {
         let mut data: Vec<u8> = Vec::new();
         data.write(&file.0).unwrap();
         data.write(&track.to_raw()).unwrap();

src/component.rs

@@ -35,6 +35,7 @@ pub struct Lazy<T>(Mutex<bool>, UnsafeCell<Option<T>>);
 unsafe impl <T: Sync> Sync for Lazy<T> {}
 unsafe impl <T: Send> Send for Lazy<T> {}
 
+#[cfg_attr(feature = "cargo-clippy", allow(mutex_atomic))]
 impl <T> Lazy<T> {
     pub fn new() -> Lazy<T> {
         Lazy(Mutex::new(false), UnsafeCell::new(None))

src/lib.rs

@@ -3,6 +3,8 @@
 #![cfg_attr(not(feature = "with-syntex"), feature(plugin, custom_derive))]
 #![cfg_attr(not(feature = "with-syntex"), plugin(protobuf_macros))]
 
+#![cfg_attr(feature = "cargo-clippy", allow(unused_io_amount))]
+
 #[macro_use] extern crate error_chain;
 #[macro_use] extern crate futures;
 #[macro_use] extern crate lazy_static;

src/main.rs

@@ -25,7 +25,7 @@ use librespot::version;
 
 fn usage(program: &str, opts: &getopts::Options) -> String {
     let brief = format!("Usage: {} [options]", program);
-    format!("{}", opts.usage(&brief))
+    opts.usage(&brief)
 }
 
 fn setup_logging(verbose: bool) {

src/mercury/types.rs

@@ -72,7 +72,7 @@ impl MercuryRequest {
 
         for p in &self.payload {
             packet.write_u16::<BigEndian>(p.len() as u16).unwrap();
-            packet.write(&p).unwrap();
+            packet.write(p).unwrap();
         }
 
         packet

src/metadata.rs

@@ -80,7 +80,7 @@ impl MetadataTrait for Track {
                        .filter(|file| file.has_file_id())
                        .map(|file| {
                            let mut dst = [0u8; 20];
-                           dst.clone_from_slice(&file.get_file_id());
+                           dst.clone_from_slice(file.get_file_id());
                            (file.get_format(), FileId(dst))
                        })
                        .collect();
@@ -129,7 +129,7 @@ impl MetadataTrait for Album {
                         .filter(|image| image.has_file_id())
                         .map(|image| {
                             let mut dst = [0u8; 20];
-                            dst.clone_from_slice(&image.get_file_id());
+                            dst.clone_from_slice(image.get_file_id());
                             FileId(dst)
                         })
                         .collect::<Vec<_>>();
@@ -157,9 +157,7 @@ impl MetadataTrait for Artist {
 
         let top_tracks = msg.get_top_track()
                             .iter()
-                            .filter(|tt| !tt.has_country() ||
-                                         countrylist_contains(tt.get_country(), &country))
-                            .next()
+                            .find(|tt| !tt.has_country() || countrylist_contains(tt.get_country(), &country))
                             .unwrap()
                             .get_track()
                             .iter()

src/player.rs

@@ -197,7 +197,7 @@ impl PlayerInternal {
         match packet {
             Some(Ok(mut packet)) => {
                 if self.volume < 0xFFFF {
-                    for x in packet.data.iter_mut() {
+                    for x in &mut packet.data {
                         *x = (*x as i32 * self.volume as i32 / 0xFFFF) as i16;
                     }
                 }
@@ -314,17 +314,15 @@ impl PlayerInternal {
     }
 
     fn run_onstart(&self) {
-        match self.session.config().onstart {
-            Some(ref program) => util::run_program(program),
-            None => {},
-        };
+        if let Some(ref program) = self.session.config().onstart {
+            util::run_program(program)
+        }
     }
 
     fn run_onstop(&self) {
-        match self.session.config().onstop {
-            Some(ref program) => util::run_program(program),
-            None => {},
-        };
+        if let Some(ref program) = self.session.config().onstop {
+            util::run_program(program)
+        }
     }
 
     fn find_available_alternative<'a>(&self, track: &'a Track) -> Option<Cow<'a, Track>> {

src/session.rs

@@ -77,7 +77,7 @@ pub struct SessionWeak(pub Weak<SessionInternal>);
 
 pub fn device_id(name: &str) -> String {
     let mut h = Sha1::new();
-    h.input_str(&name);
+    h.input_str(name);
     h.result_str()
 }
 
@@ -192,6 +192,7 @@ impl Session {
         self.0.handle.spawn(f)
     }
 
+    #[cfg_attr(feature = "cargo-clippy", allow(match_same_arms))]
     fn dispatch(&self, cmd: u8, data: Vec<u8>) {
         match cmd {
             0x4 => self.send_packet(0x49, data),

src/spirc.rs

@@ -159,8 +159,8 @@ impl Spirc {
         (spirc, task)
     }
 
-    pub fn shutdown(&mut self) {
-        mpsc::UnboundedSender::send(&mut self.commands, SpircCommand::Shutdown).unwrap();
+    pub fn shutdown(&self) {
+        mpsc::UnboundedSender::send(&self.commands, SpircCommand::Shutdown).unwrap();
     }
 }
 
@@ -312,7 +312,12 @@ impl SpircTask {
                 // Over 3s it seeks to zero
                 if self.position() < 3000 {
                     let current_index = self.state.get_playing_track_index();
-                    let new_index = (current_index - 1) % (self.state.get_track().len() as u32);
+
+                    let new_index = if current_index == 0 {
+                        self.state.get_track().len() as u32 - 1
+                    } else {
+                        current_index - 1
+                    };
 
                     self.state.set_playing_track_index(new_index);
                     self.state.set_position_ms(0);
@@ -379,12 +384,12 @@ impl SpircTask {
         self.state.get_position_ms() + diff as u32
     }
 
-    fn update_tracks(&mut self, ref frame: &protocol::spirc::Frame) {
+    fn update_tracks(&mut self, frame: &protocol::spirc::Frame) {
         let index = frame.get_state().get_playing_track_index();
         let tracks = frame.get_state().get_track();
 
         self.state.set_playing_track_index(index);
-        self.state.set_track(tracks.into_iter().map(Clone::clone).collect());
+        self.state.set_track(tracks.into_iter().cloned().collect());
     }
 
     fn load_track(&mut self, play: bool) {
@@ -398,7 +403,12 @@ impl SpircTask {
 
         let end_of_track = self.player.load(track, play, position);
 
-        self.state.set_status(PlayStatus::kPlayStatusPlay);
+        if play {
+            self.state.set_status(PlayStatus::kPlayStatusPlay);
+        } else {
+            self.state.set_status(PlayStatus::kPlayStatusPause);
+        }
+
         self.end_of_track = end_of_track.boxed();
     }
 

src/util/int128.rs

@@ -86,10 +86,10 @@ impl std::ops::Mul<u128> for u128 {
                     2 => (product, 0),
                     3 => (product << 32, 0),
                     _ => {
-                        if product != 0 {
-                            panic!("Overflow on mul {:?} {:?} ({} {})", self, rhs, i, j)
-                        } else {
+                        if product == 0 {
                             (0, 0)
+                        } else {
+                            panic!("Overflow on mul {:?} {:?} ({} {})", self, rhs, i, j)
                         }
                     }
                 };

src/util/mod.rs

@@ -42,7 +42,7 @@ pub fn mkdir_existing(path: &Path) -> io::Result<()> {
     })
 }
 
-pub fn run_program(program: &String) {
+pub fn run_program(program: &str) {
     info!("Running {}", program);
     let mut v: Vec<&str> = program.split_whitespace().collect();
     let status = Command::new(&v.remove(0))