Function xmlSetupParserForBuffer 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn xmlSetupParserForBuffer(
    ctxt: *mut _xmlParserCtxt,
    buffer: *const xmlChar,
    filename: *const c_char,
)

Setup the parser context to parse a new buffer (legacy API).

UPSTREAM-PARITY

void xmlSetupParserForBuffer(xmlParserCtxtPtr ctxt, const xmlChar* buffer,
                             const char *filename);