/*
 * @project      The CERN Tape Archive (CTA)
 * @copyright    Copyright © 2021-2022 CERN
 * @license      This program is free software, distributed under the terms of the GNU General Public
 *               Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING". You can
 *               redistribute it and/or modify it under the terms of the GPL Version 3, or (at your
 *               option) any later version.
 *
 *               This program is distributed in the hope that it will be useful, but WITHOUT ANY
 *               WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
 *               PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 *               In applying this licence, CERN does not waive the privileges and immunities
 *               granted to it by virtue of its status as an Intergovernmental Organization or
 *               submit itself to any jurisdiction.
 */

#include "mediachanger/DebugBuf.hpp"

//------------------------------------------------------------------------------
// constructor
//------------------------------------------------------------------------------
cta::mediachanger::DebugBuf::DebugBuf(std::ostream &os):
  m_debug(false), m_os(os), m_writePreamble(true) {
}

//------------------------------------------------------------------------------
// setDebug
//------------------------------------------------------------------------------
void cta::mediachanger::DebugBuf::setDebug(const bool value) {
  m_debug = value;
}

//------------------------------------------------------------------------------
// overflow
//------------------------------------------------------------------------------
std::streambuf::int_type cta::mediachanger::DebugBuf::overflow(
  const int_type c) {
  // Only write something if debug mode is on
  if(m_debug) {
    if(m_writePreamble) {
      writePreamble();
      m_writePreamble = false;
    }
    m_os << (char)c;
  }

  // If an end of line was encountered then the next write should be preceeded
  // with a preamble
  if('\n' == (char)c) {
    m_writePreamble = true;
  }

  return c;
}

//------------------------------------------------------------------------------
// writePreamble
//------------------------------------------------------------------------------
void cta::mediachanger::DebugBuf::writePreamble() {
  m_os << "DEBUG: ";
}