Function libxslt::bindings::htmlCtxtReadIO

pub unsafe extern "C" fn htmlCtxtReadIO(
    ctxt: *mut _xmlParserCtxt, 
    ioread: Option<unsafe extern "C" fn(*mut c_void, *mut i8, i32) -> i32>, 
    ioclose: Option<unsafe extern "C" fn(*mut c_void) -> i32>, 
    ioctx: *mut c_void, 
    URL: *const i8, 
    encoding: *const i8, 
    options: i32
) -> *mut _xmlDoc