don’t panic!() on open(2) failure

1 files changed, 10 insertions, 10 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 2dee9ca..d0014a5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -545,18 +545,18 @@ impl Palette
 
     pub fn from_file(fname: &Path) -> io::Result<Self>
     {
-        /* Check if file exists
-         */
-        let file = match std::fs::File::open(&fname) {
-            Err(e) => {
-                panic!("failed to open {} as file ({})", fname.display(), e)
-            },
-            Ok(f) => f,
-        };
+        let file = std::fs::File::open(&fname).map_err(|e| {
+            io::Error::new(
+                io::ErrorKind::Other,
+                format!(
+                    "failed to open palette specification {}: {}",
+                    fname.display(),
+                    e
+                ),
+            )
+        })?;
         let mut reader = std::io::BufReader::new(file);
 
-        /* Parse scheme file
-         */
         Self::from_buffered_reader(&mut reader)
     }