Fix clippy warnings

src/bin/main.rs

@@ -12,7 +12,6 @@ use std::io::Write;
 use std::path::{Path, Component};
 use std::process;
 
-use ansi_term::Style;
 use getopts::Options;
 use isatty::stdout_isatty;
 use regex::{Regex, RegexBuilder};
@@ -70,14 +69,14 @@ fn print_entry(path_root: &Path, path_entry: &Path, config: &FdOptions) {
                                       .and_then(|n| config.ls_colors.filenames.get(n));
 
                     match o_style {
-                        Some(s) => s.clone(),
+                        Some(s) => *s,
                         None =>
                             // Look up file extension
                             component_path.extension()
                                           .and_then(|e| e.to_str())
                                           .and_then(|e| config.ls_colors.extensions.get(e))
-                                          .map(|r| r.clone())
-                                          .unwrap_or(Style::new())
+                                          .cloned()
+                                          .unwrap_or_default()
                     }
                 };
 
@@ -124,7 +123,7 @@ fn scan(root: &Path, pattern: &Regex, config: &FdOptions) {
             };
 
         search_str.and_then(|s| pattern.find(s))
-                  .map(|_| print_entry(&root, path_rel, &config));
+                  .map(|_| print_entry(root, path_rel, config));
     }
 }
 
@@ -163,7 +162,7 @@ fn main() {
 
     if matches.opt_present("h") {
         let brief = "Usage: fd [options] [PATTERN]";
-        print!("{}", opts.usage(&brief));
+        print!("{}", opts.usage(brief));
         process::exit(1);
     }
 
@@ -183,7 +182,7 @@ fn main() {
         env::var("LS_COLORS")
             .ok()
             .map(|val| LsColors::from_string(&val))
-            .unwrap_or(LsColors::default());
+            .unwrap_or_default();
 
     let config = FdOptions {
         // The search will be case-sensitive if the command line flag is set or
@@ -204,7 +203,7 @@ fn main() {
     match RegexBuilder::new(pattern)
               .case_insensitive(!config.case_sensitive)
               .build() {
-        Ok(re)   => scan(&current_dir, &re, &config),
+        Ok(re)   => scan(current_dir, &re, &config),
         Err(err) => error(err.description())
     }
 }

src/lscolors/mod.rs

@@ -22,9 +22,9 @@ pub struct LsColors {
     pub filenames: FilenameStyles,
 }
 
-impl LsColors {
+impl Default for LsColors {
     /// Get a default LsColors structure.
-    pub fn default() -> LsColors {
+    fn default() -> LsColors {
         LsColors {
             directory: Colour::Blue.bold(),
             symlink: Colour::Cyan.normal(),
@@ -32,7 +32,9 @@ impl LsColors {
             filenames: HashMap::new()
         }
     }
+}
 
+impl LsColors {
     fn parse_decoration(code: &str) -> Option<fn(Colour) -> Style> {
         match code {
             "0" | "00" => Some(Colour::normal),
@@ -45,7 +47,7 @@ impl LsColors {
 
     /// Parse ANSI escape sequences like `38;5;10;1`.
     fn parse_style(code: &str) -> Option<Style> {
-        let mut split = code.split(";");
+        let mut split = code.split(';');
 
         if let Some(first) = split.next() {
             // Try to match the first part as a text-decoration argument
@@ -65,26 +67,24 @@ impl LsColors {
                     };
 
                     Colour::Fixed(n)
-                } else {
-                    if let Some(color_s) = c1 {
-                        match color_s {
-                            "30" => Colour::Black,
-                            "31" => Colour::Red,
-                            "32" => Colour::Green,
-                            "33" => Colour::Yellow,
-                            "34" => Colour::Blue,
-                            "35" => Colour::Purple,
-                            "36" => Colour::Cyan,
-                            _    => Colour::White
-                        }
-                    } else {
-                        Colour::White
+                } else if let Some(color_s) = c1 {
+                    match color_s {
+                        "30" => Colour::Black,
+                        "31" => Colour::Red,
+                        "32" => Colour::Green,
+                        "33" => Colour::Yellow,
+                        "34" => Colour::Blue,
+                        "35" => Colour::Purple,
+                        "36" => Colour::Cyan,
+                        _    => Colour::White
                     }
+                } else {
+                    Colour::White
                 };
 
             if decoration.is_none() {
                 // Try to find a decoration somewhere in the sequence
-                decoration = code.split(";")
+                decoration = code.split(';')
                                  .flat_map(LsColors::parse_decoration)
                                  .next();
             }
@@ -99,7 +99,7 @@ impl LsColors {
 
     /// Add a new LS_COLORS entry
     fn add_entry(&mut self, input: &str) {
-        let mut parts = input.trim().split("=");
+        let mut parts = input.trim().split('=');
         if let Some(pattern) = parts.next() {
             if let Some(style_code) = parts.next() {
                 // Ensure that the input was split into exactly two parts:
@@ -121,7 +121,7 @@ impl LsColors {
                         let extension = String::from(pattern).split_off(2);
                         self.extensions.insert(extension, style);
                     }
-                    else if pattern.starts_with("*") {
+                    else if pattern.starts_with('*') {
                         let filename = String::from(pattern).split_off(1);
                         self.filenames.insert(filename, style);
                     } else {
@@ -134,11 +134,11 @@ impl LsColors {
     }
 
     /// Generate a `LsColors` structure from a string.
-    pub fn from_string(input: &String) -> LsColors {
+    pub fn from_string(input: &str) -> LsColors {
         let mut lscolors = LsColors::default();
 
-        for s in input.split(":") {
-            lscolors.add_entry(&s);
+        for s in input.split(':') {
+            lscolors.add_entry(s);
         }
 
         lscolors