Function convert_dir 

pub fn convert_dir<I, O, P>(
    input_dir: I,
    output_dir: Option<O>,
    format: Format,
    progress: P,
) -> Result<()>
where
    I: AsRef<Path>,
    O: AsRef<Path> + Sync,
    P: ProgressHandler + Sync,

Convert directory.

Note

If output is not specified, the output is placed at the same level as input.

Errors

Failed to convert.