1 files changed, 8 insertions, 0 deletions

diff --git a/src/result.rs b/src/result.rs
index 47302ae..715f10c 100644
--- a/src/result.rs
+++ b/src/result.rs
@@ -7,6 +7,7 @@ pub type ArchiveResult<R> = Result<R, ArchiveError>;
 #[derive(Debug)]
 pub enum ArchiveError {
     IO(io::Error),
+    WrongSignature { expected: u32, received: u32 },
 }
 
 impl From<io::Error> for ArchiveError {
@@ -19,6 +20,12 @@ impl Display for ArchiveError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             Self::IO(err) => write!(f, "{err}"),
+            Self::WrongSignature { expected, received } => {
+                write!(
+                    f,
+                    "Wrong signature. Expected: {expected}, received: {received}"
+                )
+            }
         }
     }
 }
@@ -27,6 +34,7 @@ impl Error for ArchiveError {
     fn source(&self) -> Option<&(dyn Error + 'static)> {
         match self {
             Self::IO(source) => Some(source),
+            _ => None,
         }
     }
 }