add wide string format helper

src/lib.rs

@@ -40,4 +40,7 @@ mod time;
 pub use time::dur;
 
 mod hash;
-pub use hash::*;
+pub use hash::*;
+
+mod strings;
+pub use strings::*;

src/strings.rs

@@ -0,0 +1,26 @@
+use core::fmt::{Debug, Display, Error, Formatter, Write};
+use core::ops::{ControlFlow, Deref};
+
+#[repr(transparent)]
+pub struct Wide<'a>(pub &'a [u16]);
+
+impl<'a> Display for Wide<'a> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> core::fmt::Result {
+        let result = char::decode_utf16(self.0.iter().cloned())
+            .map(|a| a.unwrap_or('?'))
+            .try_for_each(|c| match f.write_char(c) {
+                Ok(_) => ControlFlow::Continue(()),
+                Err(e) => ControlFlow::Break(e),
+            });
+        match result {
+            ControlFlow::Continue(_) => Ok(()),
+            ControlFlow::Break(e) => Err(e)
+        }
+    }
+}
+
+
+
+
+
+