TuttleOFX/libraries/tuttle/src/tuttle/common/utils/FileGlobal.hpp

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#ifndef _FileGlobal_HPP
#define _FileGlobal_HPP

#include <tuttle/common/patterns/Singleton.hpp>
#include <tuttle/common/system/system.hpp>

#include <iostream>
#include <fstream>

/**
 * @brief Output datas in the same file from anywhere.
 **/
class FileGlobal : public Singleton<FileGlobal>
{
public:
        friend class Singleton<FileGlobal>;

private:
        FileGlobal() : _flux( NULL ) {}
        ~FileGlobal() {}

public:
        std::ofstream _flux;

public:
        /// @param[in] fileName : file to create
        /// @brief File creation
        void openFile( std::string fileName )
        {
                #ifndef __WINDOWS__
                _flux.open( fileName.c_str() );
                #else
                _flux.open( fileName.c_str(), std::ios::binary );
                #endif
                if( !_flux )
                {
                        std::cerr << "impossible de creer le fichier global : " << fileName << std::endl;
                }
        }

        /// @brief File close
        void closeFile() { _flux.close(); }
};

//______________________________________________________________________________
// Macros to output in global file

/**
 * @param[in] FILENAME : file name
 * @brief Change the filename for the output
 **/
#define FILEGLOBAL_FILENAME( FILENAME ) \
    if( FileGlobal::instance()._flux ) { FileGlobal::instance().closeFile(); } \
    FileGlobal::instance().openFile( FILENAME );

/**
 * @param[in] ... : all parameters with an operator << defined
 * @brief Output into the file define by FILEGLOBAL_FILENAME (if not specified, by default "out.log")
 **/
#define FILEGLOBAL(... ) \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << __VA_ARGS__ << std::endl;

#define FILEGLOBAL_VAR( a ) \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << # a << ": " << a << std::endl;

#define FILEGLOBAL_VAR2( a, b ) \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << # a << ": " << a << ", " << # b << ": " << b << std::endl;

#define FILEGLOBAL_VAR3( a, b, c ) \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << # a << ": " << a << ", " << # b << ": " << b << ", " << # c << ": " << c << std::endl;

#define FILEGLOBAL_VAR4( a, b, c, d ) \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << # a << ": " << a << ", " << # b << ": " << b << ", " << # c << ": " << c << ", " << # d << ": " << d << std::endl;

/**
 * @param[in] ... : all parameters with an operator << defined
 * @brief Output into the file define by FILEGLOBAL_FILENAME (if not specified, by default "out.log")
 **/
#define FILEGLOBAL_INFO(... ) \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << INFO << \
    "\t" << __VA_ARGS__ << std::endl;

#define FILEGLOBAL_FUNCTION \
    if( !FileGlobal::instance()._flux ) { FileGlobal::instance().openFile( "out.log" ); } \
    FileGlobal::instance()._flux << INFO << std::endl;

#endif