feat: copyrat

src/error.rs

@@ -0,0 +1,18 @@
+use std::fmt;
+
+#[derive(Debug)]
+pub enum ParseError {
+  ExpectedSurroundingPair,
+  UnknownAlphabet,
+  UnknownColor,
+}
+
+impl fmt::Display for ParseError {
+  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    match self {
+      ParseError::ExpectedSurroundingPair => write!(f, "Expected 2 chars"),
+      ParseError::UnknownAlphabet => write!(f, "Expected a known alphabet"),
+      ParseError::UnknownColor => write!(f, "Expected ANSI color name (magenta, cyan, black, ...)"),
+    }
+  }
+}