Add import support

src/scripts/base.rs

@@ -4,6 +4,10 @@ use anyhow::Result;
 pub trait ScriptBuilder {
     fn default_encoding(&self) -> Encoding;
 
+    fn default_patched_encoding(&self) -> Encoding {
+        self.default_encoding()
+    }
+
     fn build_script(
         &self,
         filename: &str,
@@ -20,4 +24,11 @@ pub trait Script: std::fmt::Debug {
     fn default_output_script_type(&self) -> OutputScriptType;
 
     fn extract_messages(&self) -> Result<Vec<Message>>;
+
+    fn import_messages(
+        &self,
+        messages: Vec<Message>,
+        filename: &str,
+        encoding: Encoding,
+    ) -> Result<()>;
 }