Function xmlNewTextReaderFilename 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlNewTextReaderFilename(
    URI: *const c_char,
    encoding: *const c_char,
    options: c_int,
) -> *mut XmlTextReader

xmlTextReaderPtr xmlNewTextReaderFilename(const char *URI, const char *encoding, int options).