Style: use NonNull

src/lib.rs

@@ -1,10 +1,10 @@
 use std::{
     cmp::{max, min},
     ffi::{CStr, OsStr, c_void},
-    fs, iter,
-    mem::MaybeUninit,
+    fs,
     os::unix::ffi::OsStrExt,
     path::Path,
+    ptr::NonNull,
     slice,
 };
 
@@ -260,10 +260,13 @@ unsafe extern "C" fn page_get_text(
     rect: zathura_rectangle_s,
     res: *mut ZathuraResult,
 ) -> *mut i8 {
-    let res = if res.is_null() {
-        &mut ZathuraResult::OK
+    let res = if let Some(mut r) = NonNull::new(res) {
+        unsafe {
+            r.write(ZathuraResult::Unknown);
+            r.as_mut()
+        }
     } else {
-        unsafe { &mut *(res as *mut MaybeUninit<ZathuraResult>) }.write(ZathuraResult::Unknown)
+        &mut ZathuraResult::OK
     };
     let typst_page: &Page = unsafe { &*(data as *mut _) };
 
@@ -299,10 +302,13 @@ unsafe extern "C" fn page_get_selection(
     rect: zathura_rectangle_s,
     res: *mut ZathuraResult,
 ) -> *mut girara_list_t {
-    let res = if res.is_null() {
-        &mut ZathuraResult::OK
+    let res = if let Some(mut r) = NonNull::new(res) {
+        unsafe {
+            r.write(ZathuraResult::Unknown);
+            r.as_mut()
+        }
     } else {
-        unsafe { &mut *(res as *mut MaybeUninit<ZathuraResult>) }.write(ZathuraResult::Unknown)
+        &mut ZathuraResult::OK
     };
     let typst_page: &Page = unsafe { &*(data as *mut _) };
 
@@ -345,6 +351,5 @@ unsafe extern "C" fn page_get_selection(
 }
 
 // TODO: render warnings
-// TODO: PDF as attachment
 // TODO: link/... handling
 // TODO: better caching