fix bin to string (read the doc)

src/read_and_write.rs

@@ -44,9 +44,13 @@ pub fn save_action(txt: &str, file: &mut File) -> Result<(), std::io::Error> {
     file.write_all(string.as_bytes())?;
 
     let map = tree_to_map(&mut tree, true);
+    eprintln!("&txt = {:?}", &txt);
     let trad = body_to_bin(&txt, map);
+    eprintln!("trad = {:?}", trad);
     let trad_bin = string_to_binary(&trad);
+    eprintln!("trad_bin = {:?}", trad_bin);
     let len_body = trad.len() as u32;
+    eprintln!("len_body = {:?}", len_body);
     file.write_all(&len_body.to_be_bytes())?;
     file.write_all(&trad_bin)?;
     Ok(())