Function libxml::bindings::xmlCtxtReadIO

pub unsafe extern "C" fn xmlCtxtReadIO(
    ctxt: xmlParserCtxtPtr, 
    ioread: xmlInputReadCallback, 
    ioclose: xmlInputCloseCallback, 
    ioctx: *mut c_void, 
    URL: *const c_char, 
    encoding: *const c_char, 
    options: c_int
) -> xmlDocPtr