fix: correctly track and log item size during IO loop

src/modes/save.rs

@@ -132,12 +132,18 @@ pub fn mode_save(
     debug!("MAIN: Starting IO loop");
     loop {
         let n = stdin.read(&mut buffer[..libc::BUFSIZ as usize])?;
+        item.size = match item.size {
+            None => Some(n as i64),
+            Some(prev_n) => Some(prev_n + n as i64),
+        };
 
         if n == 0 {
             debug!("MAIN: EOF on STDIN");
             break;
         }
 
+        debug!("MAIN: Loop - {:?} bytes", item.size);
+
         stdout.write_all(&buffer[..n])?;
         item_out.write_all(&buffer[..n])?;
         digest_engine.update(&buffer[..n]);
@@ -145,13 +151,8 @@ pub fn mode_save(
         for meta_plugin in meta_plugins.iter_mut() {
             meta_plugin.update(&buffer[..n]);
         }
-
-        item.size = match item.size {
-            None => Some(n as i64),
-            Some(prev_n) => Some(prev_n + n as i64),
-        };
     }
-    debug!("MAIN: Ending IO loop");
+    debug!("MAIN: Ending IO loop after {:?} bytes", item.size);
 
     stdout.flush()?;
     item_out.flush()?;