bbtkMessageManager.h

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/*=========================================================================                                                                               
  Program:   bbtk
  Module:    $RCSfile: bbtkMessageManager.h,v $
  Language:  C++
  Date:      $Date: 2008/10/17 08:18:13 $
  Version:   $Revision: 1.7 $
=========================================================================*/

/* ---------------------------------------------------------------------

* Copyright (c) CREATIS-LRMN (Centre de Recherche en Imagerie Medicale)
* Authors : Eduardo Davila, Laurent Guigues, Jean-Pierre Roux
*
*  This software is governed by the CeCILL-B license under French law and 
*  abiding by the rules of distribution of free software. You can  use, 
*  modify and/ or redistribute the software under the terms of the CeCILL-B 
*  license as circulated by CEA, CNRS and INRIA at the following URL 
*  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html 
*  or in the file LICENSE.txt.
*
*  As a counterpart to the access to the source code and  rights to copy,
*  modify and redistribute granted by the license, users are provided only
*  with a limited warranty  and the software's author,  the holder of the
*  economic rights,  and the successive licensors  have only  limited
*  liability. 
*
*  The fact that you are presently reading this means that you have had
*  knowledge of the CeCILL-B license and that you accept its terms.
* ------------------------------------------------------------------------ */                                                                         



  //===========================================================
#ifndef __bbtkMessageManager_h__
#define __bbtkMessageManager_h__

// The do { } while(0) statement in macros is made to "swallow the semicolon" 
// see http://gcc.gnu.org/onlinedocs/cpp/Swallowing-the-Semicolon.html#Swallowing-the-Semicolon

#include "bbtkSystem.h"
#include "bbtkRTTI.h"

#include <string>
#include <map>
#include <iostream>
#include <sstream>

// Comment out these symbols to prevent compilation 
//#define BBTK_COMPILE_MESSAGES
//#define BBTK_COMPILE_DEBUG_MESSAGES
//#define BBTK_COMPILE_WARNING_MESSAGES
//#define BBTK_COMPILE_ERROR_MESSAGES


#define bbtkOnMessageLevel(key,value)                   \
  int __bbtkOnMessageLevelVariable =                    \
    bbtk::MessageManager::GetMessageLevel(key);         \
  if ( __bbtkOnMessageLevelVariable<0)                  \
    {                                                   \
      bbtkWarning("message type '"<<key<<"' unknown");  \
    }                                                   \
  else if (value<= __bbtkOnMessageLevelVariable) 

#ifdef BBTK_PREPEND_MESSAGE_WITH_CODE
#define bbtkMessageCode                         \
  key[0] << key[1] << key[2] << value << " "
#else 
#define bbtkMessageCode ""
#endif 

#ifdef BBTK_PREPEND_MESSAGE_WITH_TAB
#define bbtkMessageTab                          \
  bbtk::MessageManager::GetTab()
#else 
#define bbtkMessageTab ""
#endif

#define BBTK_PREPEND_MESSAGE_WITH_SPACE
#ifdef BBTK_PREPEND_MESSAGE_WITH_SPACE
#define bbtkMessageSpace(value)                 \
  bbtk::MessageManager::GetSpace(value)
#else 
#define bbtkMessageSpace(value) ""
#endif
 

//===========================================================
#ifdef BBTK_COMPILE_MESSAGES

// Macro for messages
#define bbtkMessage(key,value,MESSAGE)                  \
  do {                                                  \
    bbtkOnMessageLevel(key,value)                       \
      {                                                 \
        std::cout << bbtkMessageCode                    \
                  << bbtkMessageTab                     \
                  << bbtkMessageSpace(value)            \
                  << MESSAGE;                           \
      }                                                 \
  }                                                     \
  while (0)

// Macro for continuing a message (when one wants to split the macro
// call into multiple lines)
#define bbtkMessageCont(key,value,MESSAGE)      \
  do                                            \
    {                                           \
      bbtkOnMessageLevel(key,value)             \
        {                                       \
          std::cout << MESSAGE;                 \
        }                                       \
    }                                           \
  while (0)

#define bbtkMessageInc(key,value,MESSAGE)               \
  do                                                    \
    {                                                   \
      bbtkOnMessageLevel(key,value)                     \
        {                                               \
          std::cout << bbtkMessageCode                  \
                    << bbtkMessageTab                   \
                    << bbtkMessageSpace(value)          \
                    << MESSAGE;                         \
          bbtk::MessageManager::IncTab();               \
        }                                               \
    }                                                   \
  while (0)

#define bbtkMessageDec(key,value,MESSAGE)               \
  do                                                    \
    {                                                   \
      bbtkOnMessageLevel(key,value)                     \
        {                                               \
          bbtk::MessageManager::DecTab();               \
          std::cout << bbtkMessageCode                  \
                    << bbtkMessageTab                   \
                    << bbtkMessageSpace(value)          \
                    << MESSAGE;                         \
        }                                               \
    }                                                   \
  while (0)

#define bbtkDecTab(key,value)                   \
  do                                            \
    {                                           \
      bbtkOnMessageLevel(key,value)             \
        {                                       \
          bbtk::MessageManager::DecTab();       \
        }                                       \
    }                                           \
  while (0)

#define bbtkIncTab(key,value)                   \
  do                                            \
    {                                           \
      bbtkOnMessageLevel(key,value)             \
        {                                       \
          bbtk::MessageManager::IncTab();       \
        }                                       \
    }                                           \
  while (0)

#define bbtkResetTab()                          \
  do                                            \
    {                                           \
      bbtk::MessageManager::ResetTab();         \
    }                                           \
  while (0)

#else
#define bbtkMessage(key,value,MESSAGE)
#define bbtkMessageInc(key,value,MESSAGE)
#define bbtkMessageDec(key,value,MESSAGE)
#define bbtkMessageCont(key,value,MESSAGE)
#define bbtkDecTab(key,value)
#define bbtkIncTab(key,value)
#define bbtkResetTab()
#endif
//===========================================================



//===========================================================
#ifdef BBTK_COMPILE_DEBUG_MESSAGES

// Macro for debug messages
#define bbtkDebugMessage(key,value,MESSAGE)             \
  do                                                    \
    {                                                   \
      bbtkOnMessageLevel(key,value)                     \
        {                                               \
          std::cout << bbtkMessageCode                  \
                    << bbtkMessageTab                   \
                    << bbtkMessageSpace(value)          \
                    << MESSAGE;                         \
        }                                               \
    }                                                   \
  while (0)

// Macro for continuing a debug message (when one wants to split the
// macro call into multiple lines)
#define bbtkDebugMessageCont(key,value,MESSAGE) \
  do                                            \
    {                                           \
      bbtkOnMessageLevel(key,value)             \
        {                                       \
          std::cout << MESSAGE;                 \
        }                                       \
    }                                           \
  while (0)

#define bbtkDebugMessageInc(key,value,MESSAGE)          \
  do                                                    \
    {                                                   \
      bbtkOnMessageLevel(key,value)                     \
        {                                               \
          std::cout << bbtkMessageCode                  \
                    << bbtkMessageTab                   \
                    << bbtkMessageSpace(value)          \
                    << MESSAGE;                         \
          bbtk::MessageManager::IncTab();               \
        }                                               \
    }                                                   \
  while (0)

#define bbtkDebugMessageDec(key,value,MESSAGE)          \
  do                                                    \
    {                                                   \
      bbtkOnMessageLevel(key,value)                     \
        {                                               \
          bbtk::MessageManager::DecTab();               \
          std::cout << bbtkMessageCode                  \
                    << bbtkMessageTab                   \
                    << bbtkMessageSpace(value)          \
                    << MESSAGE;                         \
        }                                               \
    }                                                   \
  while (0)

#define bbtkDebugDecTab(key,value)              \
  do                                            \
    {                                           \
      bbtkOnMessageLevel(key,value)             \
        {                                       \
          bbtk::MessageManager::DecTab();       \
        }                                       \
    }                                           \
  while (0)

#define bbtkDebugIncTab(key,value)              \
    do                                          \
      {                                         \
        bbtkOnMessageLevel(key,value)           \
          {                                     \
            bbtk::MessageManager::IncTab();     \
          }                                     \
      }                                         \
    while (0)
    
#define bbtkDebugResetTab()                     \
    do                                          \
      {                                         \
        bbtk::MessageManager::ResetTab();       \
      }                                         \
    while (0)

#else
#define bbtkDebugMessage(key,value,MESSAGE) 
#define bbtkDebugMessageCont(key,value,MESSAGE) 
#define bbtkDebugMessageInc(key,value,MESSAGE)
#define bbtkDebugMessageDec(key,value,MESSAGE) 
#define bbtkDebugDecTab(key,value)
#define bbtkDebugIncTab(key,value)
#endif
//===========================================================

//===========================================================
#ifdef BBTK_COMPILE_WARNING_MESSAGES
#define bbtkWarning(MESSAGE)                                            \
  do                                                                    \
    {                                                                   \
      int lev = bbtk::MessageManager::GetMessageLevel("Warning");       \
      if (lev >0)                                                       \
        {                                                               \
          std::cerr << "!! WARNING !! " << MESSAGE << std::endl;        \
          if (lev >1)                                                   \
            {                                                           \
              std::cerr << "!! WARNING !! In file '"<<__FILE__          \
                        <<"' ; Line "<<__LINE__<<std::endl;             \
            }                                                           \
        }                                                               \
    }                                                                   \
  while (0) 

#else
#define bbtkWarning(MESSAGE) 
#endif
//===========================================================


//===========================================================
#ifdef BBTK_COMPILE_ERROR_MESSAGES
//#include "bbtkWx.h"
#define bbtkError(MESSAGE)                              \
  do                                                    \
    {                                                   \
      std::ostringstream s;                             \
      s << MESSAGE;                                     \
      std::ostringstream f;                             \
      f << __FILE__ << " (l."<<__LINE__<<")";           \
      bbtk::Exception e( BBTK_GET_CURRENT_OBJECT_NAME,  \
                        f.str(),                        \
                        s.str());                       \
      throw e;                                          \
    }                                                   \
  while (0) 

#define bbtkGlobalError(MESSAGE)                                \
  do                                                    \
    {                                                   \
      std::ostringstream s;                             \
      s << MESSAGE;                                     \
      std::ostringstream f;                             \
      f << __FILE__ << " (l."<<__LINE__<<")";           \
      bbtk::Exception e( "global scope",                \
                        f.str(),                        \
                        s.str());                       \
      throw e;                                          \
    }                                                   \
  while (0) 

#define BBTK_INTERNAL_ERROR_MESSAGE \
  "\n\n***********************************************\n**** THIS IS AN INTERNAL ERROR TO BBTK     ****\n**** Please send a full bug report to :    ****\n****  bbtk-developers@creatis.insa-lyon.fr ****\n***********************************************\n\n"

#define bbtkInternalError(MESSAGE)                      \
  do                                                    \
    {                                                   \
      std::ostringstream s;                             \
      s << MESSAGE << BBTK_INTERNAL_ERROR_MESSAGE;      \
      std::ostringstream f;                             \
      f << __FILE__ << " (l."<<__LINE__<<")";           \
      bbtk::Exception e( BBTK_GET_CURRENT_OBJECT_NAME,  \
                         f.str(),                       \
                         s.str());                      \
      throw e;                                          \
    }                                                   \
  while (0) 

#else
#define bbtkError(MESSAGE)
#define bbtkGlobalError(MESSAGE)
#define bbtkInternalError(MESSAGE)
#endif
//===========================================================

//===========================================================
#define bbtkendl std::endl
//===========================================================


namespace bbtk 
{

  class BBTK_EXPORT MessageManager
  {
  public:
    MessageManager();
    ~MessageManager();
    static MessageManager* GetInstance();
    static void RegisterMessageType(std::string key, 
                                    std::string help,
                                    unsigned char default_level = 9);
    static void SetMessageLevel(std::string key, unsigned char level);
    static int GetMessageLevel(std::string key);
    static std::string& GetTab() { static std::string s; return s; }
    static std::string GetSpace(int n) { 
      std::string s; s.insert(0,"                ",n); return s; }
    static void IncTab() { GetTab() += std::string(" "); }
    static void DecTab() { GetTab() = GetTab().substr(0,GetTab().length()-1); }
    static void ResetTab() { GetTab() = std::string(""); }
    static void PrintInfo();

  private:
    std::map<std::string,int> mMessageLevel;
    std::map<std::string,std::string> mMessageHelp;  
    unsigned int mMaxMessageLength;
  };
  //===========================================================
  
}

#include "bbtkException.h"

#endif