Function convert_file 

pub fn convert_file(
    path: impl AsRef<Path>,
    to: TargetFormat,
    from: Option<&str>,
) -> Result<Conversion, Error>

Convert a case file to to, optionally forcing the source format with from.

This is the canonical file-conversion helper shared by the bindings. It parses path once, writes the resulting Network to to, and returns the converted text plus any fidelity warnings, read side first. An echo (writing back to the source format) returns the retained text with no warnings.

Errors

As parse_file.