feat: add pack method

docx-core/src/documents/xml_docx.rs

@@ -1,5 +1,8 @@
 use super::XMLDocProps;
-use wasm_bindgen::prelude::*;
+
+use crate::zipper;
+use std::io::prelude::*;
+use std::io::Seek;
 
 #[derive(Debug)]
 pub struct XMLDocx {
@@ -9,3 +12,12 @@ pub struct XMLDocx {
     pub styles: Vec<u8>,
     pub document: Vec<u8>,
 }
+
+impl XMLDocx {
+    pub fn pack<W>(self, w: W) -> zip::result::ZipResult<()>
+    where
+        W: Write + Seek,
+    {
+        zipper::zip(w, self)
+    }
+}

docx-core/src/lib.rs

@@ -8,10 +8,10 @@ pub use types::*;
 pub use zipper::*;
 
 pub fn simple() {
-    let xml = Docx::new()
-        .add_paragraph(Paragraph::new().add_run(Run::new("Hello")))
-        .build();
     let path = std::path::Path::new("./test.docx");
     let file = std::fs::File::create(&path).unwrap();
-    zip(file, xml);
+    Docx::new()
+        .add_paragraph(Paragraph::new().add_run(Run::new("Hello")))
+        .build()
+        .pack(file);
 }