Implement ostree::checksum_file_from_input

rust-bindings/rust/src/functions.rs

@@ -32,3 +32,35 @@ pub fn checksum_file<P: IsA<gio::File>, Q: IsA<gio::Cancellable>>(
         }
     }
 }
+
+pub fn checksum_file_from_input<P: IsA<gio::InputStream>, Q: IsA<gio::Cancellable>>(
+    file_info: &gio::FileInfo,
+    xattrs: Option<&glib::Variant>,
+    in_: Option<&P>,
+    objtype: ObjectType,
+    cancellable: Option<&Q>,
+) -> Result<Checksum, Box<dyn Error>> {
+    unsafe {
+        let mut out_csum = ptr::null_mut();
+        let mut error = ptr::null_mut();
+        let ret = ostree_sys::ostree_checksum_file_from_input(
+            file_info.to_glib_none().0,
+            xattrs.to_glib_none().0,
+            in_.map(|p| p.as_ref()).to_glib_none().0,
+            objtype.to_glib(),
+            &mut out_csum,
+            cancellable.map(|p| p.as_ref()).to_glib_none().0,
+            &mut error,
+        );
+
+        if !error.is_null() {
+            Err(Box::<glib::Error>::new(from_glib_full(error)))
+        } else if ret == GFALSE {
+            Err(Box::new(glib_bool_error!(
+                "unknown error in ostree_checksum_file_from_input"
+            )))
+        } else {
+            Ok(Checksum::from_glib_full(out_csum))
+        }
+    }
+}