/* ------------------------------------------------------------ */
public PrintWriter getWriter() throws java.io.IOException {
if (_outputState == DISABLED) return __nullServletWriter;
if (_outputState != NO_OUT && _outputState != WRITER_OUT) throw new IllegalStateException();
// If we are switching modes, flush output to try avoid overlaps.
if (_out != null) _out.flush();
/* if there is no writer yet */
if (_writer == null) {
/* get encoding from Content-Type header */
String encoding = _httpResponse.getCharacterEncoding();
if (encoding == null) {
if (_servletHttpRequest != null) {
/* implementation of educated defaults */
String mimeType = _httpResponse.getMimeType();
encoding =
_servletHttpRequest
.getServletHandler()
.getHttpContext()
.getEncodingByMimeType(mimeType);
}
if (encoding == null) encoding = StringUtil.__ISO_8859_1;
_httpResponse.setCharacterEncoding(encoding, true);
}
/* construct Writer using correct encoding */
_writer = new ServletWriter(_httpResponse.getOutputStream(), encoding);
}
_outputState = WRITER_OUT;
return _writer;
}
/* ------------------------------------------------------------ */
public void flushBuffer() throws IOException {
if (((HttpOutputStream) _httpResponse.getOutputStream()).isClosed()) return;
if (_writer != null) _writer.flush();
if (_out != null) _out.flush();
if (_writer == null && _out == null) _httpResponse.getOutputStream().flush();
if (!_httpResponse.isCommitted()) _httpResponse.commit();
}
/* ------------------------------------------------------------ */
void setOutputState(int s) throws IOException {
if (s < 0) {
_outputState = DISABLED;
if (_writer != null) _writer.disable();
_writer = null;
if (_out != null) _out.disable();
_out = null;
} else _outputState = s;
}