author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Wed, 01 Nov 2006 13:11:30 +0100 | |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* Copyright (c) 2006 INRIA |
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* All rights reserved. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation; |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
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*/ |
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#ifndef STREAM_TRACER_H |
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#define STREAM_TRACER_H |
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#include <ostream> |
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namespace ns3 { |
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/** |
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* \brief log arbitrary data to std::ostreams |
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* |
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* Whenever operator << is invoked on this class, |
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* it is forwarded to the stored std::ostream output |
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* stream (if there is one). |
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*/ |
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class StreamTracer { |
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public: |
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StreamTracer () |
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: m_os (0) {} |
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template <typename T> |
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StreamTracer &operator << (T const&v) { |
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if (m_os != 0) |
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{ |
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(*m_os) << v; |
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} |
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return *this; |
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} |
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template <typename T> |
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StreamTracer &operator << (T &v) { |
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if (m_os != 0) |
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{ |
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(*m_os) << v; |
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} |
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return *this; |
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} |
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StreamTracer &operator << (std::ostream &(*v) (std::ostream &)) { |
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if (m_os != 0) |
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{ |
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(*m_os) << v; |
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} |
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return *this; |
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} |
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/** |
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* \param os the output stream to store |
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*/ |
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void SetStream (std::ostream * os) { |
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m_os = os; |
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} |
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private: |
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std::ostream *m_os; |
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}; |
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}; // namespace ns3 |
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#endif /* TRACER_STREAM_H */ |