cargo clippy pedantic

ascii/src/lib.rs

@@ -205,8 +205,7 @@ impl<'a> Tokens<'a> {
         let mut whole_string = String::new();
         let mut color = &DynColors::Ansi(AnsiColors::Default);
 
-        self.truncate(start, end).for_each(|token| {
-            match token {
+        self.truncate(start, end).for_each(|token| match token {
             Token::Char(chr) => {
                 width = width.saturating_sub(1);
                 colored_segment.push(chr);
@@ -220,9 +219,8 @@ impl<'a> Tokens<'a> {
             }
             Token::Space => {
                 width = width.saturating_sub(1);
-                    colored_segment.push(' ')
+                colored_segment.push(' ');
             }
-            };
         });
 
         add_styled_segment(&mut whole_string, &colored_segment, *color, bold);
@@ -267,15 +265,15 @@ fn token<R>(s: &str, predicate: impl FnOnce(char) -> Option<R>) -> ParseResult<R
 
 /// Parses a color indicator of the format `{n}` where `n` is a digit.
 fn color_token(s: &str) -> ParseResult<Token> {
-    let (s, _) = token(s, succeed_when(|c| c == '{'))?;
+    let (s, ()) = token(s, succeed_when(|c| c == '{'))?;
     let (s, color_index) = token(s, |c| c.to_digit(10))?;
-    let (s, _) = token(s, succeed_when(|c| c == '}'))?;
+    let (s, ()) = token(s, succeed_when(|c| c == '}'))?;
     Some((s, Token::Color(color_index)))
 }
 
 /// Parses a space.
 fn space_token(s: &str) -> ParseResult<Token> {
-    token(s, succeed_when(|c| c == ' ')).map(|(s, _)| (s, Token::Space))
+    token(s, succeed_when(|c| c == ' ')).map(|(s, ())| (s, Token::Space))
 }
 
 /// Parses any arbitrary character. This cannot fail.

build.rs

@@ -1,10 +1,10 @@
-use lazy_static::lazy_static;
 use regex::Regex;
 use std::collections::HashMap;
 use std::env;
 use std::error::Error;
 use std::fs::{self, File};
 use std::path::Path;
+use std::sync::LazyLock;
 use tera::{Context, Tera};
 
 fn main() -> Result<(), Box<dyn Error>> {
@@ -37,12 +37,9 @@ fn strip_color_tokens_filter(
     value: &tera::Value,
     _args: &HashMap<String, tera::Value>,
 ) -> tera::Result<tera::Value> {
-    lazy_static! {
-        static ref COLOR_INDEX_REGEX: Regex = Regex::new(r"\{\d+\}").unwrap();
-    }
-    let s = match value {
-        tera::Value::String(s) => s,
-        _ => return Err(tera::Error::msg("expected string")),
+    static COLOR_INDEX_REGEX: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"\{\d+\}").unwrap());
+    let tera::Value::String(s) = value else {
+        return Err(tera::Error::msg("expected string"));
     };
     Ok(tera::Value::String(
         COLOR_INDEX_REGEX.replace_all(s, "").to_string(),
@@ -53,20 +50,17 @@ fn hex_to_rgb_filter(
     value: &tera::Value,
     _args: &HashMap<String, tera::Value>,
 ) -> tera::Result<tera::Value> {
-    let hex_string = match value {
-        tera::Value::String(s) => s,
-        _ => return Err(tera::Error::msg("expected string")),
+    let tera::Value::String(hex_string) = value else {
+        return Err(tera::Error::msg("expected string"));
     };
-    let hex_string = match hex_string.strip_prefix('#') {
-        Some(s) => s,
-        None => return Err(tera::Error::msg("expected hex string starting with `#`")),
+    let Some(hex_string) = hex_string.strip_prefix('#') else {
+        return Err(tera::Error::msg("expected hex string starting with `#`"));
     };
     if hex_string.len() != 6 {
         return Err(tera::Error::msg("expected a 6 digit hex string"));
     }
-    let channel_bytes = match u32::from_str_radix(hex_string, 16) {
-        Ok(n) => n,
-        Err(_) => return Err(tera::Error::msg("expected a valid hex string")),
+    let Ok(channel_bytes) = u32::from_str_radix(hex_string, 16) else {
+        return Err(tera::Error::msg("expected a valid hex string"));
     };
     let r = (channel_bytes >> 16) & 0xFF;
     let g = (channel_bytes >> 8) & 0xFF;

manifest/src/lib.rs

@@ -45,7 +45,7 @@ fn parse_cargo_manifest(path: &Path) -> Result<Manifest> {
     let m = cargo_toml::Manifest::from_path(path)
         .with_context(|| format!("Failed to parse Cargo.toml at '{}'", path.display()))?;
     let package = m.package.context("Not a package (only a workspace)")?;
-    let description = package.description().map(|v| v.into());
+    let description = package.description().map(Into::into);
 
     Ok(Manifest {
         manifest_type: ManifestType::Cargo,
@@ -53,7 +53,7 @@ fn parse_cargo_manifest(path: &Path) -> Result<Manifest> {
         name: package.name.clone(),
         description,
         version: package.version().into(),
-        license: package.license().map(|x| x.into()),
+        license: package.license().map(Into::into),
     })
 }
 

src/cli.rs

@@ -274,7 +274,7 @@ impl Default for InfoCliOptions {
 impl Default for TextForamttingCliOptions {
     fn default() -> Self {
         TextForamttingCliOptions {
-            text_colors: Default::default(),
+            text_colors: Vec::default(),
             iso_time: Default::default(),
             number_separator: NumberSeparator::Plain,
             no_bold: Default::default(),
@@ -296,7 +296,7 @@ impl Default for ImageCliOptions {
     fn default() -> Self {
         ImageCliOptions {
             image: Option::default(),
-            image_protocol: Default::default(),
+            image_protocol: Option::default(),
             color_resolution: 16,
         }
     }
@@ -353,7 +353,7 @@ pub enum NumberSeparator {
 }
 
 impl NumberSeparator {
-    fn separator(&self) -> &'static str {
+    fn separator(self) -> &'static str {
         match self {
             Self::Plain => "",
             Self::Comma => ",",

src/info/authors.rs

@@ -162,7 +162,7 @@ impl InfoField for AuthorsInfo {
     fn title(&self) -> String {
         let mut title: String = "Author".into();
         if self.authors.len() > 1 {
-            title.push('s')
+            title.push('s');
         }
         title
     }

src/info/churn.rs

@@ -87,14 +87,14 @@ fn compute_file_churns(
     Ok(number_of_commits_by_file_path_sorted
         .into_iter()
         .filter_map(|(file_path, nbr_of_commits)| {
-            if !glob_set.is_match(file_path.to_string()) {
+            if glob_set.is_match(file_path.to_string()) {
+                None
+            } else {
                 Some(FileChurn::new(
                     file_path.to_string(),
                     *nbr_of_commits,
                     number_separator,
                 ))
-            } else {
-                None
             }
         })
         .take(number_of_file_churns_to_display)

src/info/contributors.rs

@@ -32,7 +32,7 @@ impl InfoField for ContributorsInfo {
         if self.total_number_of_authors > self.number_of_authors_to_display {
             format_number(&self.total_number_of_authors, self.number_separator)
         } else {
-            "".to_string()
+            String::new()
         }
     }
 

src/info/git/metrics.rs

@@ -1,5 +1,4 @@
 use super::sig::Sig;
-use anyhow::Result;
 use gix::bstr::BString;
 use gix::date::Time;
 use std::collections::HashMap;
@@ -21,7 +20,7 @@ impl GitMetrics {
         churn_pool_size: usize,
         time_of_first_commit: Option<Time>,
         time_of_most_recent_commit: Option<Time>,
-    ) -> Result<Self> {
+    ) -> Self {
         let total_number_of_commits = number_of_commits_by_signature.values().sum();
         let total_number_of_authors = number_of_commits_by_signature.len();
 
@@ -30,14 +29,14 @@ impl GitMetrics {
             .and_then(|a| time_of_most_recent_commit.map(|b| (a, b)))
             .unwrap_or_default();
 
-        Ok(Self {
+        Self {
             number_of_commits_by_signature,
             number_of_commits_by_file_path,
             total_number_of_authors,
             total_number_of_commits,
             churn_pool_size,
-            time_of_first_commit,
             time_of_most_recent_commit,
-        })
+            time_of_first_commit,
+        }
     }
 }

src/info/git/mod.rs

@@ -33,7 +33,7 @@ pub fn traverse_commit_graph(
     let total_number_of_commits = Arc::new(AtomicUsize::default());
 
     let num_threads = std::thread::available_parallelism()
-        .map(|p| p.get())
+        .map(std::num::NonZero::get)
         .unwrap_or(1);
     let commit_graph = repo.commit_graph().ok();
     let can_use_author_threads = num_threads > 1 && commit_graph.is_some();
@@ -54,7 +54,7 @@ pub fn traverse_commit_graph(
         &is_traversal_complete,
         &total_number_of_commits,
         min_churn_pool_size,
-    )?;
+    );
 
     let author_threads = can_use_author_threads
         .then(|| get_author_channel(repo, num_threads, no_bots.clone(), &mailmap));
@@ -117,7 +117,7 @@ pub fn traverse_commit_graph(
         churn_pool_size,
         time_of_first_commit,
         time_of_most_recent_commit,
-    )?;
+    );
 
     Ok(git_metrics)
 }
@@ -177,7 +177,7 @@ fn get_churn_channel(
     is_traversal_complete: &Arc<AtomicBool>,
     total_number_of_commits: &Arc<AtomicUsize>,
     max_churn_pool_size: Option<usize>,
-) -> Result<(JoinHandle<Result<ChurnPair>>, Sender<ObjectId>)> {
+) -> (JoinHandle<Result<ChurnPair>>, Sender<ObjectId>) {
     let (tx, rx) = channel::<gix::hash::ObjectId>();
     let thread = std::thread::spawn({
         let repo = repo.clone();
@@ -209,7 +209,7 @@ fn get_churn_channel(
         }
     });
 
-    Ok((thread, tx))
+    (thread, tx)
 }
 
 fn should_break(
@@ -261,7 +261,7 @@ fn compute_diff_with_parent(
         let new_tree = commit.tree()?;
         let changes =
             repo.diff_tree_to_tree(&old_tree, &new_tree, Options::default().with_rewrites(None))?;
-        for change in changes.iter() {
+        for change in &changes {
             let is_file_change = match change {
                 Change::Addition { entry_mode, .. } | Change::Modification { entry_mode, .. } => {
                     entry_mode.is_blob()

src/info/head.rs

@@ -21,16 +21,16 @@ impl HeadRefs {
 
 impl std::fmt::Display for HeadRefs {
     fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
-        if !self.refs.is_empty() {
+        if self.refs.is_empty() {
+            write!(f, "{}", self.short_commit_id)
+        } else {
             let refs_str = self
                 .refs
                 .iter()
-                .map(|ref_name| ref_name.as_str())
+                .map(String::as_str)
                 .collect::<Vec<&str>>()
                 .join(", ");
             write!(f, "{} ({})", self.short_commit_id, refs_str)
-        } else {
-            write!(f, "{}", self.short_commit_id)
         }
     }
 }

src/info/license.rs

@@ -39,8 +39,7 @@ impl Detector {
                         && entry
                             .file_name()
                             .map(OsStr::to_string_lossy)
-                            .map(is_license_file)
-                            .unwrap_or_default()
+                            .is_some_and(is_license_file)
                 })
                 .filter_map(|entry| {
                     let contents = fs::read_to_string(entry).unwrap_or_default();