addressing clippy lints

src/filemap.rs

@@ -12,9 +12,7 @@
 //! use cache_buster::Files;
 //! use cache_buster::CACHE_BUSTER_DATA_FILE;
 //!
-//! fn main(){
 //! let files = Files::new(CACHE_BUSTER_DATA_FILE);
-//! }
 //! ```
 
 use std::collections::HashMap;

src/lib.rs

@@ -27,7 +27,6 @@
 //! ```no_run
 //! use cache_buster::BusterBuilder;
 //!
-//! fn main() {
 //! // note: add error checking yourself.
 //! //    println!("cargo:rustc-env=GIT_process={}", git_process);
 //! let types = vec![
@@ -47,7 +46,6 @@
 //!     .unwrap();
 //!
 //! config.process().unwrap();
-//! }
 //! ```
 //! - `main.rs`:
 //!
@@ -59,11 +57,9 @@
 //! use cache_buster::Files;
 //! use cache_buster::CACHE_BUSTER_DATA_FILE;
 //!
-//! fn main(){
 //! let files = Files::new(CACHE_BUSTER_DATA_FILE);
 //! // the path to the file before setting up for cache busting
 //! files.get("./dist/github.svg");
-//! }
 //! ```
 
 pub mod processor;

src/processor.rs

@@ -12,7 +12,6 @@
 //! ```rust
 //! use cache_buster::BusterBuilder;
 //!
-//! fn main() {
 //! // note: add error checking yourself.
 //! //    println!("cargo:rustc-env=GIT_process={}", git_process);
 //! let types = vec![
@@ -32,7 +31,6 @@
 //!     .unwrap();
 //!
 //! config.process().unwrap();
-//! }
 //! ```
 //!
 //! There's a runtime component to this library which will let you read modified
@@ -135,7 +133,7 @@ impl<'a> Buster<'a> {
                 for mime_type in self.mime_types.iter() {
                     let file_mime = mime_guess::from_path(path)
                         .first()
-                        .expect(&format!("couldn't resolve MIME for file: {:?}", &path));
+                        .unwrap_or_else(|| panic!("couldn't resolve MIME for file: {:?}", &path));
                     if &file_mime == mime_type {
                         let contents = Self::read_to_string(&path).unwrap();
                         let hash = Self::hasher(&contents);
@@ -177,7 +175,7 @@ impl<'a> Buster<'a> {
         if let Some(prefix) = &self.prefix {
             //panic!("{}", &prefix);
             let mut result = self.result.as_str();
-            if result.chars().nth(0) == Some('/') {
+            if result.starts_with('/') {
                 result = &self.result[1..];
             }
             let destination = Path::new(prefix)
@@ -185,10 +183,10 @@ impl<'a> Buster<'a> {
                 .join(rel_location)
                 .join(name);
 
-            (source, destination.into())
+            (source, destination)
         } else {
             let destination = Path::new(&self.result).join(rel_location).join(name);
-            (source, destination.into())
+            (source, destination)
         }
     }
 
@@ -211,8 +209,7 @@ impl<'a> Buster<'a> {
 
             if entry_path.is_dir() && path != entry_path {
                 Self::create_dir_structure(&self, entry_path)?;
-            } else {
+            } else if entry_path.is_dir() {
-                if entry_path.is_dir() {
                 let rel_location = entry_path.strip_prefix(&self.source).unwrap();
                 let destination = Path::new(&self.result).join(rel_location);
                 if !destination.exists() {
@@ -220,7 +217,6 @@ impl<'a> Buster<'a> {
                 }
             }
         }
-        }
         Ok(())
     }
 }
@@ -245,11 +241,11 @@ impl Files {
 
     /// Create file map: map original path to modified paths
     fn add(&mut self, k: String, v: String) -> Result<(), &'static str> {
-        if self.map.contains_key(&k) {
+        if let std::collections::hash_map::Entry::Vacant(e) = self.map.entry(k) {
-            Err("key exists")
+            e.insert(v);
-        } else {
-            self.map.insert(k, v);
             Ok(())
+        } else {
+            Err("key exists")
         }
     }