/usr/include/eclib/logger.h is in libec-dev 20160720-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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//////////////////////////////////////////////////////////////////////////
//
// Copyright 1990-2012 Marcus Mo
//
// This file is part of the eclib package.
//
// eclib is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2 of the License, or (at your
// option) any later version.
//
// eclib 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.
//
// You should have received a copy of the GNU General Public License
// along with eclib; if not, write to the Free Software Foundation,
// Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//
//////////////////////////////////////////////////////////////////////////
/**
* logger.h
*
* Declarations for logger class.
* Verbosity levels are integers:
* -1 : Error. Always print
* 0 : Print if verbose > 0
* 1 : Print if verbose > 1
* ... etc ...
*/
#ifndef LOGGER_H
#define LOGGER_H
// Include headers
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <sstream>
// Disable multithreading
// #undef ECLIB_MULTITHREAD
#ifdef ECLIB_MULTITHREAD
#include <boost/thread/thread.hpp>
// Uncomment if multithreading debug messages required
//#define ECLIB_MULTITHREAD_DEBUG
#endif
// Logging configurations
#ifndef ECLOG1
#define ECLOG1(v) if(eclogger::level() <= (v)) ; else eclogger().stream()
#endif
#ifndef ECLOG2
#define ECLOG2(v) if(eclogger::level() <= (v)) ; else eclogger().stream(__FILE__,__LINE__)
#endif
// Expose logging macro
#ifndef ECLOG
#define ECLOG ECLOG1
#endif
class eclogger {
public:
eclogger();
~eclogger();
std::ostringstream& stream();
std::ostringstream& stream( const char *file, const unsigned long line );
static int level();
static void setLevel( const int verbose );
private:
static int level_;
std::ostringstream s;
};
#endif
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