fix(clippy): clippy fixes (#1508)

* fix(clippy): clippy fixes

* chore(fmt): cargo fmt

11 files changed, 86 insertions, 103 deletions

diff --git a/default-plugins/status-bar/src/first_line.rs b/default-plugins/status-bar/src/first_line.rs
index a4fa91b8..2ffe5f72 100644
--- a/default-plugins/status-bar/src/first_line.rs
+++ b/default-plugins/status-bar/src/first_line.rs
@@ -303,7 +303,7 @@ fn key_indicators(
 }
 
 pub fn superkey(palette: ColoredElements, separator: &str) -> LinePart {
-    let prefix_text = if separator.len() == 0 {
+    let prefix_text = if separator.is_empty() {
         " Ctrl + "
     } else {
         " Ctrl +"
diff --git a/src/commands.rs b/src/commands.rs
index 7715d435..ae3d4f84 100644
--- a/src/commands.rs
+++ b/src/commands.rs
@@ -140,43 +140,40 @@ pub(crate) fn send_action_to_session(opts: zellij_utils::cli::CliArgs) {
 
 fn attach_with_fake_client(opts: zellij_utils::cli::CliArgs, name: &str) {
     if let Some(zellij_utils::cli::Command::Sessions(zellij_utils::cli::Sessions::Action {
-        action,
+        action: Some(action),
     })) = opts.command.clone()
     {
-        if let Some(action) = action.clone() {
-            let action = format!("[{}]", action);
-            match zellij_utils::serde_yaml::from_str::<ActionsFromYaml>(&action).into_diagnostic() {
-                Ok(parsed) => {
-                    let (config, _, config_options) = match Setup::from_options(&opts) {
-                        Ok(results) => results,
-                        Err(e) => {
-                            eprintln!("{}", e);
-                            process::exit(1);
-                        },
-                    };
-                    let os_input =
-                        get_os_input(zellij_client::os_input_output::get_client_os_input);
+        let action = format!("[{}]", action);
+        match zellij_utils::serde_yaml::from_str::<ActionsFromYaml>(&action).into_diagnostic() {
+            Ok(parsed) => {
+                let (config, _, config_options) = match Setup::from_options(&opts) {
+                    Ok(results) => results,
+                    Err(e) => {
+                        eprintln!("{}", e);
+                        process::exit(1);
+                    },
+                };
+                let os_input = get_os_input(zellij_client::os_input_output::get_client_os_input);
 
-                    let actions = parsed.actions().to_vec();
-                    log::debug!("Starting fake Zellij client!");
-                    zellij_client::fake_client::start_fake_client(
-                        Box::new(os_input),
-                        opts,
-                        *Box::new(config),
-                        config_options,
-                        ClientInfo::New(name.to_string()),
-                        None,
-                        actions,
-                    );
-                    log::debug!("Quitting fake client now.");
-                    std::process::exit(0);
-                },
-                Err(e) => {
-                    eprintln!("{:?}", e);
-                    std::process::exit(1);
-                },
-            };
-        }
+                let actions = parsed.actions().to_vec();
+                log::debug!("Starting fake Zellij client!");
+                zellij_client::fake_client::start_fake_client(
+                    Box::new(os_input),
+                    opts,
+                    *Box::new(config),
+                    config_options,
+                    ClientInfo::New(name.to_string()),
+                    None,
+                    actions,
+                );
+                log::debug!("Quitting fake client now.");
+                std::process::exit(0);
+            },
+            Err(e) => {
+                eprintln!("{:?}", e);
+                std::process::exit(1);
+            },
+        };
     };
 }
 
diff --git a/src/sessions.rs b/src/sessions.rs
index 38f78397..fc42b610 100644
--- a/src/sessions.rs
+++ b/src/sessions.rs
@@ -57,10 +57,8 @@ fn assert_socket(name: &str) -> bool {
             sender.send(ClientToServerMsg::ConnStatus);
             let mut receiver: IpcReceiverWithContext<ServerToClientMsg> = sender.get_receiver();
             match receiver.recv() {
-                Some((instruction, _)) => {
-                    matches!(instruction, ServerToClientMsg::Connected)
-                },
-                None => false,
+                Some((ServerToClientMsg::Connected, _)) => true,
+                None | Some((_, _)) => false,
             }
         },
         Err(e) if e.kind() == io::ErrorKind::ConnectionRefused => {
diff --git a/zellij-client/src/stdin_ansi_parser.rs b/zellij-client/src/stdin_ansi_parser.rs
index cf20e1f0..a3ab117c 100644
--- a/zellij-client/src/stdin_ansi_parser.rs
+++ b/zellij-client/src/stdin_ansi_parser.rs
@@ -97,11 +97,7 @@ impl StdinAnsiParser {
             Key::Alt(CharOrArrow::Char(']')) => true,
             Key::Alt(CharOrArrow::Char('\\')) => true,
             Key::Char(c) => {
-                if let '0'..='9' | 'a'..='f' = c {
-                    true
-                } else {
-                    false
-                }
+                matches!(c, '0'..='9' | 'a'..='f')
             },
             _ => false,
         }
@@ -117,7 +113,7 @@ pub enum AnsiStdinInstructionOrKeys {
 }
 
 impl AnsiStdinInstructionOrKeys {
-    pub fn pixel_dimensions_from_keys(keys: &Vec<(Key, Vec<u8>)>) -> Result<Self, &'static str> {
+    pub fn pixel_dimensions_from_keys(keys: &[(Key, Vec<u8>)]) -> Result<Self, &'static str> {
         lazy_static! {
             static ref RE: Regex = Regex::new(r"^\u{1b}\[(\d+);(\d+);(\d+)t$").unwrap();
         }
@@ -172,7 +168,7 @@ impl AnsiStdinInstructionOrKeys {
             Err("invalid sequence")
         }
     }
-    pub fn color_sequence_from_keys(keys: &Vec<(Key, Vec<u8>)>) -> Result<Self, &'static str> {
+    pub fn color_sequence_from_keys(keys: &[(Key, Vec<u8>)]) -> Result<Self, &'static str> {
         lazy_static! {
             static ref BACKGROUND_RE: Regex = Regex::new(r"11;(.*)$").unwrap();
         }
@@ -180,9 +176,8 @@ impl AnsiStdinInstructionOrKeys {
             static ref FOREGROUND_RE: Regex = Regex::new(r"10;(.*)$").unwrap();
         }
         let key_string = keys.iter().fold(String::new(), |mut acc, (key, _)| {
-            match key {
-                Key::Char(c) => acc.push(*c),
-                _ => {},
+            if let Key::Char(c) = key {
+                acc.push(*c)
             };
             acc
         });
diff --git a/zellij-server/src/os_input_output.rs b/zellij-server/src/os_input_output.rs
index d800da49..5059a8fc 100644
--- a/zellij-server/src/os_input_output.rs
+++ b/zellij-server/src/os_input_output.rs
@@ -389,11 +389,10 @@ impl ServerOsApi for ServerOsInputOutput {
         None
     }
     fn write_to_file(&mut self, buf: String, name: Option<String>) {
-        let mut f: File;
-        match name {
-            Some(x) => f = File::create(x).unwrap(),
-            None => f = tempfile().unwrap(),
-        }
+        let mut f: File = match name {
+            Some(x) => File::create(x).unwrap(),
+            None => tempfile().unwrap(),
+        };
         if let Err(e) = write!(f, "{}", buf) {
             log::error!("could not write to file: {}", e);
         }
diff --git a/zellij-server/src/panes/grid.rs b/zellij-server/src/panes/grid.rs
index 870d743c..f65a7d2b 100644
--- a/zellij-server/src/panes/grid.rs
+++ b/zellij-server/src/panes/grid.rs
@@ -720,12 +720,10 @@ impl Grid {
             }
             self.cursor.y = new_cursor_y;
             self.cursor.x = new_cursor_x;
-            self.saved_cursor_position
-                .as_mut()
-                .map(|saved_cursor_position| {
-                    saved_cursor_position.y = new_cursor_y;
-                    saved_cursor_position.x = new_cursor_x;
-                });
+            if let Some(saved_cursor_position) = self.saved_cursor_position.as_mut() {
+                saved_cursor_position.y = new_cursor_y;
+                saved_cursor_position.x = new_cursor_x;
+            };
         } else if new_columns != self.width
             && self.alternate_lines_above_viewport_and_cursor.is_some()
         {
@@ -750,24 +748,22 @@ impl Grid {
                     );
                     let rows_pulled = self.viewport.len() - current_viewport_row_count;
                     self.cursor.y += rows_pulled;
-                    self.saved_cursor_position
-                        .as_mut()
-                        .map(|saved_cursor_position| saved_cursor_position.y += rows_pulled);
+                    if let Some(saved_cursor_position) = self.saved_cursor_position.as_mut() {
+                        saved_cursor_position.y += rows_pulled
+                    };
                 },
                 Ordering::Greater => {
                     let row_count_to_transfer = current_viewport_row_count - new_rows;
                     if row_count_to_transfer > self.cursor.y {
                         self.cursor.y = 0;
-                        self.saved_cursor_position
-                            .as_mut()
-                            .map(|saved_cursor_position| saved_cursor_position.y = 0);
+                        if let Some(saved_cursor_position) = self.saved_cursor_position.as_mut() {
+                            saved_cursor_position.y = 0
+                        };
                     } else {
                         self.cursor.y -= row_count_to_transfer;
-                        self.saved_cursor_position
-                            .as_mut()
-                            .map(|saved_cursor_position| {
-                                saved_cursor_position.y -= row_count_to_transfer
-                            });
+                        if let Some(saved_cursor_position) = self.saved_cursor_position.as_mut() {
+                            saved_cursor_position.y -= row_count_to_transfer
+                        };
                     }
                     if self.alternate_lines_above_viewport_and_cursor.is_none() {
                         transfer_rows_from_viewport_to_lines_above(
@@ -868,7 +864,7 @@ impl Grid {
     pub fn rotate_scroll_region_up(&mut self, count: usize) {
         if let Some((scroll_region_top, scroll_region_bottom)) = self
             .scroll_region
-            .or(Some((0, self.height.saturating_sub(1))))
+            .or_else(|| Some((0, self.height.saturating_sub(1))))
         {
             self.pad_lines_until(scroll_region_bottom, EMPTY_TERMINAL_CHARACTER);
             for _ in 0..count {
@@ -889,7 +885,7 @@ impl Grid {
     pub fn rotate_scroll_region_down(&mut self, count: usize) {
         if let Some((scroll_region_top, scroll_region_bottom)) = self
             .scroll_region
-            .or(Some((0, self.height.saturating_sub(1))))
+            .or_else(|| Some((0, self.height.saturating_sub(1))))
         {
             self.pad_lines_until(scroll_region_bottom, EMPTY_TERMINAL_CHARACTER);
             let mut pad_character = EMPTY_TERMINAL_CHARACTER;
diff --git a/zellij-server/src/panes/link_handler.rs b/zellij-server/src/panes/link_handler.rs
index bfccd947..d15aba18 100644
--- a/zellij-server/src/panes/link_handler.rs
+++ b/zellij-server/src/panes/link_handler.rs
@@ -50,31 +50,29 @@ impl LinkHandler {
     }
 
     pub fn output_osc8(&self, link_anchor: Option<LinkAnchor>) -> Option<String> {
-        link_anchor
-            .map(|link| match link {
-                LinkAnchor::Start(index) => {
-                    let link = self.links.get(&index);
+        link_anchor.and_then(|link| match link {
+            LinkAnchor::Start(index) => {
+                let link = self.links.get(&index);
 
-                    let output = link.map(|link| {
-                        let id = link
-                            .id
-                            .as_ref()
-                            .map_or("".to_string(), |id| format!("id={}", id));
-                        format!("\u{1b}]8;{};{}{}", id, link.uri, TERMINATOR)
-                    });
+                let output = link.map(|link| {
+                    let id = link
+                        .id
+                        .as_ref()
+                        .map_or("".to_string(), |id| format!("id={}", id));
+                    format!("\u{1b}]8;{};{}{}", id, link.uri, TERMINATOR)
+                });
 
-                    if output.is_none() {
-                        log::warn!(
-                            "attempted to output osc8 link start, but id: {} was not found!",
-                            index
-                        );
-                    }
+                if output.is_none() {
+                    log::warn!(
+                        "attempted to output osc8 link start, but id: {} was not found!",
+                        index
+                    );
+                }
 
-                    output
-                },
-                LinkAnchor::End => Some(format!("\u{1b}]8;;{}", TERMINATOR)),
-            })
-            .flatten()
+                output
+            },
+            LinkAnchor::End => Some(format!("\u{1b}]8;;{}", TERMINATOR)),
+        })
     }
 }
 
diff --git a/zellij-server/src/panes/terminal_pane.rs b/zellij-server/src/panes/terminal_pane.rs
index 53b6d138..ac441300 100644
--- a/zellij-server/src/panes/terminal_pane.rs
+++ b/zellij-server/src/panes/terminal_pane.rs
@@ -36,6 +36,7 @@ pub enum PaneId {
 
 // FIXME: This should hold an os_api handle so that terminal panes can set their own size via FD in
 // their `reflow_lines()` method. Drop a Box<dyn ServerOsApi> in here somewhere.
+#[allow(clippy::too_many_arguments)]
 pub struct TerminalPane {
     pub grid: Grid,
     pub pid: RawFd,
@@ -488,6 +489,7 @@ impl Pane for TerminalPane {
 }
 
 impl TerminalPane {
+    #[allow(clippy::too_many_arguments)]
     pub fn new(
         pid: RawFd,
         position_and_size: PaneGeom,
diff --git a/zellij-server/src/screen.rs b/zellij-server/src/screen.rs
index 83f3363d..cb55aaa3 100644
--- a/zellij-server/src/screen.rs
+++ b/zellij-server/src/screen.rs
@@ -792,7 +792,7 @@ impl Screen {
         self.render();
     }
 
-    fn unblock_input(&self) -> () {
+    fn unblock_input(&self) {
         self.bus
             .senders
             .send_to_server(ServerInstruction::UnblockInputThread)
diff --git a/zellij-server/src/tab/mod.rs b/zellij-server/src/tab/mod.rs
index 5d95ac76..5962bf9b 100644
--- a/zellij-server/src/tab/mod.rs
+++ b/zellij-server/src/tab/mod.rs
@@ -844,8 +844,7 @@ impl Tab {
             || self
                 .suppressed_panes
                 .values()
-                .find(|s_p| s_p.pid() == PaneId::Terminal(pid))
-                .is_some()
+                .any(|s_p| s_p.pid() == PaneId::Terminal(pid))
     }
     pub fn handle_pty_bytes(&mut self, pid: RawFd, bytes: VteBytes) {
         if let Some(terminal_output) = self
diff --git a/zellij-server/src/tab/unit/tab_integration_tests.rs b/zellij-server/src/tab/unit/tab_integration_tests.rs
index 949affa3..bcad7184 100644
--- a/zellij-server/src/tab/unit/tab_integration_tests.rs
+++ b/zellij-server/src/tab/unit/tab_integration_tests.rs
@@ -90,11 +90,10 @@ impl ServerOsApi for FakeInputOutput {
         unimplemented!()
     }
     fn write_to_file(&mut self, buf: String, name: Option<String>) {
-        let f: String;
-        match name {
-            Some(x) => f = x,
-            None => f = "tmp-name".to_owned(),
-        }
+        let f: String = match name {
+            Some(x) => x,
+            None => "tmp-name".to_owned(),
+        };
         self.file_dumps.lock().unwrap().insert(f, buf);
     }
 }