pub unsafe extern "C" fn htmlCtxtReadFile(
ctxt: xmlParserCtxtPtr,
filename: *const c_char,
encoding: *const c_char,
options: c_int,
) -> htmlDocPtrpub unsafe extern "C" fn htmlCtxtReadFile(
ctxt: xmlParserCtxtPtr,
filename: *const c_char,
encoding: *const c_char,
options: c_int,
) -> htmlDocPtr