show stats in dir

examples/dir.rs

@@ -2,16 +2,26 @@ use main_error::MainError;
 use std::env::args;
 use std::ffi::OsStr;
 use std::fs;
+use std::io::stdout;
+use std::io::Write;
+use std::time::{Duration, Instant};
 use tf_log_parser::parse;
 use walkdir::WalkDir;
 
 fn main() -> Result<(), MainError> {
     let path = args().nth(1).expect("No path provided");
+
+    let mut parse_time = Duration::default();
+    let mut count = 0;
+    let start = Instant::now();
+
+    let mut stdout = stdout().lock();
+
     for entry in WalkDir::new(path) {
         let entry = entry?;
         let path = entry.path();
         if path.extension() == Some(OsStr::new("log")) {
-            print!("{} - ", path.display());
+            let _ = write!(&mut stdout, "{} - ", path.display());
             let input = match fs::read_to_string(path) {
                 Ok(input) => input,
                 Err(e) => {
@@ -19,10 +29,22 @@ fn main() -> Result<(), MainError> {
                     continue;
                 }
             };
+            let parse_start = Instant::now();
             let (output, _) = parse(&input)?;
-            println!("{} messages", output.chat.len());
+            parse_time += parse_start.elapsed();
+            count += 1;
+            let _ = writeln!(&mut stdout, "{} messages", output.chat.len());
         }
     }
 
+    let total = start.elapsed();
+
+    println!(
+        "Parsed {} in {:01}s with {:01}s of IO overhead",
+        count,
+        parse_time.as_secs_f32(),
+        total.as_secs_f32()
+    );
+
     Ok(())
 }