Add info_result

libimagutil/src/info_result.rs

@@ -0,0 +1,28 @@
+pub trait InfoResult<T, E> : Sized {
+
+    fn map_info<F: FnOnce(&T) -> String>(self, f: F) -> Self;
+
+    fn map_info_str(self, s: &str) -> Self {
+        self.map_info(|_| format!("{}", s))
+    }
+
+    fn map_info_err<F: FnOnce(&E) -> String>(self, f: F) -> Self;
+
+    fn map_info_err_str(self, s: &str) -> Self {
+        self.map_info_err(|_| format!("{}", s))
+    }
+
+}
+
+impl<T, E> InfoResult<T, E> for Result<T, E> {
+
+    fn map_info<F: FnOnce(&T) -> String>(self, f: F) -> Self {
+        self.map(|t| { info!("{}", f(&t)); t })
+    }
+
+    fn map_info_err<F: FnOnce(&E) -> String>(self, f: F) -> Self {
+        self.map_err(|e| { info!("{}", f(&e)); e })
+    }
+
+}
+

libimagutil/src/lib.rs

@@ -18,6 +18,7 @@
 extern crate regex;
 
 pub mod debug_result;
+pub mod info_result;
 pub mod ismatch;
 pub mod iter;
 pub mod key_value_split;