autocommit 2022-01-08 19:02:10 CET

src/utils/errorfmt.rs

@@ -0,0 +1,21 @@
+use std::error::Error;
+use std::fmt::{Display, Formatter};
+
+pub struct ErrorFmt<E>(pub E);
+
+impl<E: Error> Display for ErrorFmt<E> {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        let mut e_opt = Some(&self.0 as &dyn Error);
+        let mut first = true;
+        while let Some(e) = e_opt {
+            if first {
+                write!(f, "{}", e)?;
+                first = false;
+            } else {
+                write!(f, ": {}", e)?;
+            }
+            e_opt = e.source();
+        }
+        Ok(())
+    }
+}