fix clippy

src/util_file.rs

@@ -12,9 +12,10 @@ use super::{
 };
 
 pub fn get_home_str() -> Option<String> {
-    match util_os::is_macos_or_linux() {
-        true => env::var("HOME").ok(),
-        false => None,
+    if util_os::is_macos_or_linux() {
+        env::var("HOME").ok()
+    } else {
+        None
     }
 }
 
@@ -81,12 +82,8 @@ fn walk_dir_with_depth_check<FError, FProcess, FFilter>(depth: &mut u32, dir: &P
         } else if sub_dir.is_dir() {
             if func_filter_dir(&sub_dir) {
                 *depth += 1;
-                match walk_dir_with_depth_check(depth, &sub_dir, func_walk_error, func_process_file, func_filter_dir) {
-                    Err(err) => {
-                        func_walk_error(&sub_dir, err);
-                        ()
-                    },
-                    Ok(_) => (),
+                if let Err(err) = walk_dir_with_depth_check(depth, &sub_dir, func_walk_error, func_process_file, func_filter_dir) {
+                    func_walk_error(&sub_dir, err);
                 }
                 *depth -= 1;
             }

src/util_msg.rs

@@ -9,26 +9,24 @@ lazy_static! {
 pub enum MessageType { INFO, OK, WARN, ERROR, DEBUG, }
 
 pub fn is_atty() -> bool{
-    let isatty = unsafe { libc::isatty(libc::STDOUT_FILENO as i32) } != 0;
-    isatty
+    let stdout_fileno = unsafe { libc::isatty(libc::STDOUT_FILENO as i32) };
+    stdout_fileno != 0
 }
 
 pub fn print_color(color: Option<term::color::Color>, is_bold: bool, m: &str) {
     let mut t = term::stdout().unwrap();
-    match *IS_ATTY {
-        true => {
-            match color {
-                Some(c) => t.fg(c).unwrap(),
-                None => (),
-            }
-            if is_bold {
-                t.attr(term::Attr::Bold).unwrap();
-            }
-            write!(t, "{}", m).unwrap();
-            t.reset().unwrap();
-        },
-        false => write!(t, "{}", m).unwrap(),
-    };
+    if *IS_ATTY {
+        if let Some(c) = color {
+            t.fg(c).unwrap();
+        }
+        if is_bold {
+            t.attr(term::Attr::Bold).unwrap();
+        }
+        write!(t, "{}", m).unwrap();
+        t.reset().unwrap();
+    } else {
+        write!(t, "{}", m).unwrap();
+    }
 }
 
 pub fn print_color_and_flush(color: Option<term::color::Color>, is_bold: bool, m: &str) {

src/util_os.rs

@@ -1,18 +1,10 @@
 
 pub fn is_macos() -> bool {
-    if cfg!(target_os = "macos") {
-        true
-    } else {
-        false
-    }
+    cfg!(target_os = "macos")
 }
 
 pub fn is_linux() -> bool {
-    if cfg!(target_os = "linux") {
-        true
-    } else {
-        false
-    }
+    cfg!(target_os = "linux")
 }
 
 pub fn is_macos_or_linux() -> bool {

src/util_size.rs

@@ -9,20 +9,20 @@ pub const SIZE_TB: i64 = SIZE_PB * SIZE_KB;
 
 pub fn parse_size(size: &str) -> XResult<i64> {
     let lower_size = size.to_lowercase();
-    let no_last_b_size = if lower_size.ends_with("b") {
+    let no_last_b_size = if lower_size.ends_with('b') {
         &lower_size[0..lower_size.len()-1]
     } else {
         &lower_size
     };
-    if no_last_b_size.ends_with("k") {
+    if no_last_b_size.ends_with('k') {
         return Ok((SIZE_KB as f64 * no_last_b_size[0..no_last_b_size.len()-1].parse::<f64>()?) as i64);
-    } else if no_last_b_size.ends_with("m") {
+    } else if no_last_b_size.ends_with('m') {
         return Ok((SIZE_MB as f64 * no_last_b_size[0..no_last_b_size.len()-1].parse::<f64>()?) as i64);
-    } else if no_last_b_size.ends_with("g") {
+    } else if no_last_b_size.ends_with('g') {
         return Ok((SIZE_GB as f64 * no_last_b_size[0..no_last_b_size.len()-1].parse::<f64>()?) as i64);
-    } else if no_last_b_size.ends_with("t") {
+    } else if no_last_b_size.ends_with('t') {
         return Ok((SIZE_TB as f64 * no_last_b_size[0..no_last_b_size.len()-1].parse::<f64>()?) as i64);
-    } else if no_last_b_size.ends_with("p") {
+    } else if no_last_b_size.ends_with('p') {
         return Ok((SIZE_PB as f64 * no_last_b_size[0..no_last_b_size.len()-1].parse::<f64>()?) as i64);
     }
 
@@ -31,16 +31,16 @@ pub fn parse_size(size: &str) -> XResult<i64> {
 
 pub fn get_display_size(size: i64) -> String {
     if size < SIZE_KB {
-        return size.to_string();
+        size.to_string()
     } else if size < SIZE_MB {
-        return format!("{:.*}KB", 2, (size as f64) / 1024.);
+        format!("{:.*}KB", 2, (size as f64) / 1024.)
     } else if size < SIZE_GB {
-        return format!("{:.*}MB", 2, (size as f64) / 1024. / 1024.);
+        format!("{:.*}MB", 2, (size as f64) / 1024. / 1024.)
     } else if size < SIZE_TB {
-        return format!("{:.*}GB", 2, (size as f64) / 1024. / 1024. / 1024.);
+        format!("{:.*}GB", 2, (size as f64) / 1024. / 1024. / 1024.)
     } else if size < SIZE_PB {
-        return format!("{:.*}TB", 2, (size as f64) / 1024. / 1024. / 1024. / 1024.);
+        format!("{:.*}TB", 2, (size as f64) / 1024. / 1024. / 1024. / 1024.)
     } else {
-        return format!("{:.*}PB", 2, (size as f64) / 1024. / 1024. / 1024. / 1024. / 1024.);
+        format!("{:.*}PB", 2, (size as f64) / 1024. / 1024. / 1024. / 1024. / 1024.)
     }
 }