method to write header to a path

libcitadel/src/header.rs

@@ -1,5 +1,5 @@
 use std::cell::RefCell;
-use std::fs::File;
+use std::fs::{File,OpenOptions};
 use std::io::{Read, Write};
 use std::path::Path;
 
@@ -245,6 +245,10 @@ impl ImageHeader {
         Ok(())
     }
 
+    pub fn write_header_to<P: AsRef<Path>>(&self, path: P) -> Result<()> {
+        self.write_header(OpenOptions::new().write(true).open(path.as_ref())?)
+    }
+
     pub fn clear(&self) {
         for b in &mut self.0.borrow_mut()[..] {
             *b = 0;