better errors

src/csv_animation.rs

@@ -26,7 +26,21 @@ pub enum CSVParseError {
 
 impl std::fmt::Display for CSVParseError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(&format!("{self:?}"))
+        match self {
+            CSVParseError::NoData => f.write_str("Empty CSV File"),
+            CSVParseError::InvalidCSV(e) => f.write_str(&format!("Invalid CSV: {e}")),
+            CSVParseError::NoMorphs => f.write_str("No Morphs Available in the CSV File"),
+            CSVParseError::MisssingKnownHeaders => {
+                f.write_str("No Timestamp or Morph Count Headers")
+            }
+            CSVParseError::NoFrames => f.write_str("The CSV has 0 frames"),
+            CSVParseError::TimecodeParseError(e) => {
+                f.write_str(&format!("Couldn't parse a timecode in the CSV: {e}"))
+            }
+            CSVParseError::MorphParseError(e) => f.write_str(&format!(
+                "Couldn't parse a morph in the CSV - is it not a floating point number?: {e}"
+            )),
+        }
     }
 }
 

src/csv_frame.rs

@@ -23,7 +23,15 @@ pub enum TimestampParseError {
 
 impl std::fmt::Display for TimestampParseError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(&format!("{self:?}"))
+        match self {
+            TimestampParseError::EmptyTimestamp => f.write_str("The timestamp is an empty string"),
+            TimestampParseError::TooManySegments => {
+                f.write_str("There are too many segments in the timestamp")
+            }
+            TimestampParseError::NumberParseError(e, s) => f.write_str(&format!(
+                "Couldn't parse one of the segments - is {s} a number?: {e}"
+            )),
+        }
     }
 }
 

src/lib.rs

@@ -40,7 +40,29 @@ pub enum CSVAnimationLoaderError {
 
 impl std::fmt::Display for CSVAnimationLoaderError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.write_str(&format!("{self:?}"))
+        match self {
+            CSVAnimationLoaderError::Io(e) => {
+                f.write_str(&format!("Error accessing the CSV animation files: {e}"))
+            }
+            CSVAnimationLoaderError::CSVParseError(e) => {
+                f.write_str(&format!("Failed to parse the CSV file: {e}"))
+            }
+            CSVAnimationLoaderError::ClipInfoParseError(e) => {
+                f.write_str(&format!("Couldn't parse Clip Info file: {e}"))
+            }
+            CSVAnimationLoaderError::CSVReadBytesError(e) => {
+                f.write_str(&format!("Error while reading the CSV file: {e}"))
+            }
+            CSVAnimationLoaderError::CSVStringError(e) => f.write_str(&format!(
+                "Couldn't process CSV file - is it encoded as Utf8? {e}"
+            )),
+            CSVAnimationLoaderError::MappingReadBytesError(e) => {
+                f.write_str(&format!("Couldn't read mapping file: {e}"))
+            }
+            CSVAnimationLoaderError::MappingParseError(e) => {
+                f.write_str(&format!("Failed to parse mapping file: {e}"))
+            }
+        }
     }
 }