Improve arg parsing

crates/pile-value/src/extract/item/epub/mod.rs

@@ -28,10 +28,14 @@ impl EpubExtractor {
 
 #[async_trait::async_trait]
 impl ObjectExtractor for EpubExtractor {
-	async fn field(&self, name: &pile_config::Label) -> Result<Option<PileValue>, std::io::Error> {
-		match name.as_str() {
-			"text" => self.text.field(name).await,
-			"meta" => Ok(Some(PileValue::ObjectExtractor(self.meta.clone()))),
+	async fn field(
+		&self,
+		name: &pile_config::Label,
+		args: Option<&str>,
+	) -> Result<Option<PileValue>, std::io::Error> {
+		match (name.as_str(), args) {
+			("text", args) => self.text.field(name, args).await,
+			("meta", None) => Ok(Some(PileValue::ObjectExtractor(self.meta.clone()))),
 			_ => Ok(None),
 		}
 	}