Logger.h

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/*=============================================================================
TexGen: Geometric textile modeller.
Copyright (C) 2006 Martin Sherburn
 
This program 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.
 
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.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
=============================================================================*/
 
#pragma once
namespace TexGen
{
 
    #define TGERROR(MESSAGE) \
    { \
        std::ostringstream o; \
        o << MESSAGE; \
        GetLogger().TexGenError(__FILE__, __LINE__, o.str()); \
    }
 
    #define TGLOG(MESSAGE) \
    { \
        std::ostringstream o; \
        o << MESSAGE; \
        GetLogger().TexGenLog(__FILE__, __LINE__, o.str()); \
    }
 
 
    #define TGLOGINCREASEINDENT() \
    { \
        GetLogger().IncreaseIndent(); \
    }
 
    #define TGLOGDECREASEINDENT() \
    { \
        GetLogger().DecreaseIndent(); \
    }
 
    #define TGLOGAUTOINDENT() CLogIndent AutoLogIndentVariable;
 
    #define TGLOGINDENT(MESSAGE) TGLOG(MESSAGE) TGLOGAUTOINDENT()
 
 
    class CLASS_DECLSPEC CLogIndent
    {
    public:
        CLogIndent();
        ~CLogIndent();
    };
 
    class CLASS_DECLSPEC CLogger
    {
    public:
        CLogger(void);
        virtual ~CLogger(void);
 
        virtual CLogger *Copy() const = 0;
        virtual void TexGenError(std::string FileName, int iLineNumber, std::string Message) = 0;
        virtual void TexGenLog(std::string FileName, int iLineNumber, std::string Message) = 0;
        void IncreaseIndent() { ++m_iIndent; }
        void DecreaseIndent() { if (m_iIndent>0) --m_iIndent; }
 
    protected:
        int m_iIndent;
    };
 
    class CLASS_DECLSPEC CLoggerScreen : public CLogger
    {
    public:
        CLogger *Copy() const { return new CLoggerScreen(*this); }
        void TexGenError(std::string FileName, int iLineNumber, std::string Message);
        void TexGenLog(std::string FileName, int iLineNumber, std::string Message);
 
    protected:
    };
 
    class CLASS_DECLSPEC CLoggerNull : public CLogger
    {
    public:
        CLogger *Copy() const { return new CLoggerNull(*this); }
        void TexGenError(std::string FileName, int iLineNumber, std::string Message) {;}
        void TexGenLog(std::string FileName, int iLineNumber, std::string Message) {;}
 
    protected:
    };
 
    CLASS_DECLSPEC CLogger &GetLogger();
};  // namespace TexGen