Merge pull request #254 from influxdata/cn/further-improvement

refactor: Improve InputPath to InputReader conversion

src/commands/input.rs

@@ -328,7 +328,10 @@ impl InputPath {
         Ok(Self { files })
     }
 
-    pub fn files(&self) -> &[PathBuf] {
-        &self.files
+    pub fn input_readers(&self) -> impl Iterator<Item = Result<InputReader>> + '_ {
+        self.files
+            .iter()
+            .rev()
+            .map(|p| InputReader::new(&p.to_string_lossy()))
     }
 }

src/commands/stats.rs

@@ -49,12 +49,7 @@ pub async fn stats(config: &StatsConfig) -> Result<()> {
 
     let mut builder = FileSetStatsBuilder::default();
 
-    for input_reader in input_path
-        .files()
-        .iter()
-        .rev()
-        .map(|p| InputReader::new(&p.to_string_lossy()))
-    {
+    for input_reader in input_path.input_readers() {
         let input_reader = input_reader.context(OpenInput)?;
 
         let file_stats = stats_for_file(config, input_reader).await?;