Fix clippy::new_without_default

display/printf.rs

@@ -31,17 +31,17 @@ struct ConvSpec {
     zero_pad: bool,
 }
 
-impl ConvSpec {
-    fn new() -> ConvSpec {
-        ConvSpec {
+impl Default for ConvSpec {
+    fn default() -> Self {
+        Self {
             spec: ' ',
-            width: None,
-            precision: None,
-            left_justify: false,
-            sign: false,
-            space: false,
-            alt_form: false,
-            zero_pad: false,
+            width: Default::default(),
+            precision: Default::default(),
+            left_justify: Default::default(),
+            sign: Default::default(),
+            space: Default::default(),
+            alt_form: Default::default(),
+            zero_pad: Default::default(),
         }
     }
 }
@@ -81,7 +81,7 @@ fn escaped_char(c: char) -> char {
 fn tokenize_format_str(format: &str) -> Vec<Token> {
     let mut tokens: Vec<Token> = Vec::new();
     let mut literal = String::with_capacity(format.len());
-    let mut conversion = ConvSpec::new();
+    let mut conversion = ConvSpec::default();
     let mut width = String::with_capacity(8);
     let mut precision = String::with_capacity(8);
     let mut state = ParseState::Literal;
@@ -164,7 +164,7 @@ fn tokenize_format_str(format: &str) -> Vec<Token> {
                 ParseState::Specifier => {
                     conversion.spec = c;
                     tokens.push(Token::Conversion(conversion));
-                    conversion = ConvSpec::new();
+                    conversion = ConvSpec::default();
                     state = ParseState::Literal;
                     done_with_char = true;
                 }

file/dd.rs

@@ -102,20 +102,20 @@ struct Config {
     notrunc: bool,
 }
 
-impl Config {
-    fn new() -> Config {
-        Config {
-            ifile: String::new(),
-            ofile: String::new(),
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            ifile: Default::default(),
+            ofile: Default::default(),
             ibs: DEF_BLOCK_SIZE,
             obs: DEF_BLOCK_SIZE,
-            cbs: 0,
-            seek: 0,
-            skip: 0,
-            count: 0,
-            conversions: Vec::new(),
-            noerror: false,
-            notrunc: false,
+            cbs: Default::default(),
+            seek: Default::default(),
+            skip: Default::default(),
+            count: Default::default(),
+            conversions: Default::default(),
+            noerror: Default::default(),
+            notrunc: Default::default(),
         }
     }
 }
@@ -341,7 +341,7 @@ fn parse_block_size(s: &str) -> Result<usize, Box<dyn std::error::Error>> {
 }
 
 fn parse_cmdline(args: &[String]) -> Result<Config, Box<dyn std::error::Error>> {
-    let mut config = Config::new();
+    let mut config = Config::default();
 
     for arg in args {
         // Split arg into option and argument

file/tee.rs

@@ -32,18 +32,11 @@ struct TeeFile {
     f: File,
 }
 
+#[derive(Default)]
 struct TeeInfo {
     outputs: Vec<TeeFile>,
 }
 
-impl TeeInfo {
-    fn new() -> TeeInfo {
-        TeeInfo {
-            outputs: Vec::new(),
-        }
-    }
-}
-
 fn open_outputs(args: &Args, info: &mut TeeInfo) -> io::Result<()> {
     for filename in &args.files {
         let f_res = OpenOptions::new()
@@ -113,7 +106,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         }
     }
 
-    let mut state = TeeInfo::new();
+    let mut state = TeeInfo::default();
 
     open_outputs(&args, &mut state)?;
     tee_stdin(&mut state)?;

plib/src/modestr.rs

@@ -12,14 +12,15 @@ use libc::{
     S_IWUSR, S_IXGRP, S_IXOTH, S_IXUSR,
 };
 
-#[derive(PartialEq, Debug)]
+#[derive(PartialEq, Debug, Default)]
 pub enum ChmodActionOp {
     Add,
     Remove,
+    #[default]
     Set,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct ChmodAction {
     pub op: ChmodActionOp,
 
@@ -37,25 +38,7 @@ pub struct ChmodAction {
     dirty: bool,
 }
 
-impl ChmodAction {
-    pub fn new() -> ChmodAction {
-        ChmodAction {
-            op: ChmodActionOp::Set,
-            copy_user: false,
-            copy_group: false,
-            copy_others: false,
-            read: false,
-            write: false,
-            execute: false,
-            execute_dir: false,
-            setuid: false,
-            sticky: false,
-            dirty: false,
-        }
-    }
-}
-
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct ChmodClause {
     // wholist
     pub user: bool,
@@ -68,39 +51,20 @@ pub struct ChmodClause {
     dirty: bool,
 }
 
-impl ChmodClause {
-    pub fn new() -> ChmodClause {
-        ChmodClause {
-            user: false,
-            group: false,
-            others: false,
-            actions: Vec::new(),
-            dirty: false,
-        }
-    }
-}
-
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct ChmodSymbolic {
     pub clauses: Vec<ChmodClause>,
 }
 
-impl ChmodSymbolic {
-    pub fn new() -> ChmodSymbolic {
-        ChmodSymbolic {
-            clauses: Vec::new(),
-        }
-    }
-}
-
 #[derive(Debug)]
 pub enum ChmodMode {
     Absolute(u32),
     Symbolic(ChmodSymbolic),
 }
 
-#[derive(Debug)]
+#[derive(Debug, Default)]
 enum ParseState {
+    #[default]
     Wholist,
     Actionlist,
     ListOrCopy,
@@ -114,11 +78,11 @@ pub fn parse(mode: &str) -> Result<ChmodMode, String> {
         return Ok(ChmodMode::Absolute(m));
     }
 
-    let mut state = ParseState::Wholist;
     let mut done_with_char;
-    let mut symbolic = ChmodSymbolic::new();
-    let mut clause = ChmodClause::new();
-    let mut action = ChmodAction::new();
+    let mut state = ParseState::default();
+    let mut symbolic = ChmodSymbolic::default();
+    let mut clause = ChmodClause::default();
+    let mut action = ChmodAction::default();
 
     for c in mode.chars() {
         done_with_char = false;
@@ -156,7 +120,7 @@ pub fn parse(mode: &str) -> Result<ChmodMode, String> {
                             action.dirty = false;
                             done_with_char = false;
                             symbolic.clauses.push(clause);
-                            clause = ChmodClause::new();
+                            clause = ChmodClause::default();
                             state = ParseState::NextClause;
                         }
                     }
@@ -177,7 +141,7 @@ pub fn parse(mode: &str) -> Result<ChmodMode, String> {
                             done_with_char = false;
                             clause.actions.push(action);
                             clause.dirty = true;
-                            action = ChmodAction::new();
+                            action = ChmodAction::default();
                             state = ParseState::Actionlist;
                         }
                     }
@@ -196,7 +160,7 @@ pub fn parse(mode: &str) -> Result<ChmodMode, String> {
                             done_with_char = false;
                             clause.actions.push(action);
                             clause.dirty = true;
-                            action = ChmodAction::new();
+                            action = ChmodAction::default();
                             state = ParseState::Actionlist;
                         }
                     }

text/asa.rs

@@ -30,14 +30,16 @@ struct AsaState {
     lines: Vec<String>,
 }
 
-impl AsaState {
-    fn new() -> AsaState {
-        AsaState {
+impl Default for AsaState {
+    fn default() -> Self {
+        Self {
             first_line: true,
-            lines: Vec::new(),
+            lines: Default::default(),
         }
     }
+}
 
+impl AsaState {
     fn push(&mut self, line: &str) {
         self.lines.push(line.to_string());
         if self.first_line {
@@ -69,7 +71,7 @@ impl AsaState {
 fn asa_file(pathname: &PathBuf) -> io::Result<()> {
     let mut reader = plib::io::input_reader(pathname, false)?;
     let mut line_no: usize = 0;
-    let mut state = AsaState::new();
+    let mut state = AsaState::default();
 
     loop {
         line_no += 1;

text/sort.rs

@@ -121,7 +121,7 @@ impl Args {
 }
 
 /// A struct representing a range field with various sorting and comparison options.
-#[derive(Clone)]
+#[derive(Clone, Default)]
 struct RangeField {
     /// The number of the field to be considered in the range.
     field_number: usize,
@@ -149,21 +149,6 @@ struct RangeField {
     dictionary_order: bool,
 }
 
-impl RangeField {
-    fn new() -> RangeField {
-        Self {
-            field_number: 0,
-            first_character: 0,
-            numeric_sort: false,
-            ignore_leading_blanks: false,
-            reverse: false,
-            ignore_nonprintable: false,
-            fold_case: false,
-            dictionary_order: false,
-        }
-    }
-}
-
 /// Updates two RangeField objects based on their comparison options.
 ///
 /// This function takes two RangeField objects, compares their fields, and updates the fields
@@ -744,7 +729,7 @@ fn create_ranges(
     let mut key_ranges = key_ranges.iter();
 
     // Convert key ranges to numeric representations
-    let mut ranges: (RangeField, Option<RangeField>) = (RangeField::new(), None);
+    let mut ranges: (RangeField, Option<RangeField>) = (RangeField::default(), None);
 
     ranges.0 = {
         let key_range = key_ranges.next().unwrap().to_string();

tree/ls_util/entry.rs

@@ -464,7 +464,8 @@ impl Entry {
     }
 }
 
-// Used for padding in long format
+/// Used for padding in long format
+#[derive(Default)]
 pub struct LongFormatPadding {
     pub blocks_str_width: usize,
     pub inode_str_width: usize,
@@ -477,22 +478,6 @@ pub struct LongFormatPadding {
     pub time_width: usize,
 }
 
-impl Default for LongFormatPadding {
-    fn default() -> Self {
-        Self {
-            blocks_str_width: 0,
-            inode_str_width: 0,
-            num_links_width: 0,
-            owner_name_width: 0,
-            group_name_width: 0,
-            file_size_width: 0,
-            device_id_major_width: 0,
-            device_id_minor_width: 0,
-            time_width: 0,
-        }
-    }
-}
-
 impl LongFormatPadding {
     /// Get the maximum padding for each field.
     pub fn update_maximum(&mut self, other: &LongFormatPadding) {
@@ -525,25 +510,15 @@ impl LongFormatPadding {
     }
 }
 
-// Used for padding in multi-column format
+/// Used for padding in multi-column format
+#[derive(Default)]
 pub struct MultiColumnPadding {
     pub total_width: usize,
     pub inode_str_width: usize,
     pub blocks_str_width: usize,
     pub file_name_width: usize,
 }
 
-impl Default for MultiColumnPadding {
-    fn default() -> Self {
-        Self {
-            total_width: 0,
-            inode_str_width: 0,
-            blocks_str_width: 0,
-            file_name_width: 0,
-        }
-    }
-}
-
 impl MultiColumnPadding {
     pub fn update_maximum(&mut self, other: &MultiColumnPadding) {
         self.total_width = usize::max(self.total_width, other.total_width);

users/talk.rs

@@ -207,6 +207,7 @@ pub struct Osockaddr {
     pub sa_data: [u8; 14],
 }
 
+#[allow(clippy::derivable_impls)]
 impl Default for Osockaddr {
     fn default() -> Self {
         Osockaddr {