Prepare convert function

src/Tools/cpp_out/src/lib.rs

@@ -1,8 +1,6 @@
-#[cfg(test)]
-mod tests {
-    #[test]
-    fn it_works() {
-        let result = 2 + 2;
-        assert_eq!(result, 4);
-    }
-}
+use tool_helper::{Input, Output, Result};
+pub use tool_helper::Error;
+
+pub fn convert(_input: Input, _output: Output) -> Result<()> {
+    Err(Error::new(-1, "Not implemented yet".to_owned()))
+}

src/Tools/cpp_out/src/main.rs

@@ -14,8 +14,10 @@ struct CommandLine {
 fn run_main() -> tool_helper::Result<()> {
     match CommandLine::try_parse() {
         Ok(cmd) => {
-            let _output = tool_helper::open_output(cmd.input_file)?;
-            return Ok(());
+            let input  = tool_helper::open_input(cmd.input_file)?;
+            let output = tool_helper::open_output(Some(cmd.output_file))?;
+
+            return cpp_out::convert(input, output);
         },
         Err(error) => Err(tool_helper::Error::new(-1, error.to_string()))
     }    
@@ -23,7 +25,7 @@ fn run_main() -> tool_helper::Result<()> {
 
 fn main() {
     match run_main() {
-        Ok(_) => println!("All good"),
+        Ok(_) => (),
         Err(error) => {
             eprintln!("{}", error.text);
             std::process::exit(error.exit_code);