Add rog-control-center to the workspace

rog-control-center/src/error.rs

@@ -0,0 +1,43 @@
+use std::fmt;
+
+#[derive(Debug)]
+pub enum Error {
+    Io(std::io::Error),
+    Nix(nix::Error),
+    ConfigLoadFail,
+    ConfigLockFail,
+    XdgVars,
+}
+
+impl fmt::Display for Error {
+    // This trait requires `fmt` with this exact signature.
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            Error::Io(err) => write!(f, "Failed to open: {}", err),
+            Error::Nix(err) => write!(f, "Error: {}", err),
+            Error::ConfigLoadFail => write!(f, "Failed to load user config"),
+            Error::ConfigLockFail => write!(f, "Failed to lock user config"),
+            Error::XdgVars => write!(f, "XDG environment vars appear unset"),
+        }
+    }
+}
+
+impl std::error::Error for Error {}
+
+impl From<std::io::Error> for Error {
+    fn from(err: std::io::Error) -> Self {
+        Error::Io(err)
+    }
+}
+
+impl From<Error> for zbus::fdo::Error {
+    fn from(err: Error) -> Self {
+        zbus::fdo::Error::Failed(format!("Anime zbus error: {}", err))
+    }
+}
+
+impl From<nix::Error> for Error {
+    fn from(err: nix::Error) -> Self {
+        Error::Nix(err)
+    }
+}