static_logger.h

00001 /*************************************************************************
00002  *              ESLA: Embeddable Scripting LAnguage
00003  *                  Copyright (C) 2003 Frantz Maerten
00004  *
00005  *   This  program  is  free  software;  you  can  redistribute it and/or
00006  *   modify  it  under  the  terms  of  the GNU General Public License as
00007  *   published  by  the Free Software Foundation; either version 2 of the
00008  *   License, or (at your option) any later version.
00009  *
00010  *   If  you modify this software, you should contact the author, include
00011  *   a  notice giving the name of the person performing the modification,
00012  *   the date of modification, and the reason for such modification.
00013  *
00014  *   Note   that   the   GNU  General  Public  License  does  not  permit
00015  *   incorporating the Software into proprietary programs.
00016  *
00017  *  Contact: Frantz Maerten
00018  *     frantz@pangea.stanford.edu
00019  *
00020  *     Dept. of Geological & Environmental Sciences
00021  *     Stanford University 
00022  *     Stanford, CA 94305-2115
00023  *     USA
00024  *************************************************************************/
00025 
00026 
00027 #ifndef ESLA_STATIC_LOGGER
00028 #define ESLA_STATIC_LOGGER
00029 
00030 #include "../esla_namespace.h"
00031 #include "smart_pointer.h"
00032 #include <iostream>
00033 #include <fstream>
00034 #include <string>
00035 #include <set>
00036 #include <map>
00037 
00038 
00039 BEGIN_LIB_NAMESPACE
00040 
00041 class Writer ;
00042   
00046 class StaticLogger {
00047    friend class Writer ;
00048    
00049  public:
00050    static StaticLogger& instance() ;
00051    
00052    struct Beginl {
00053       Beginl();
00054    } ;
00055    struct Endl {
00056       Endl() ;
00057    } ;
00058    static const Endl   endl ;
00059    static const Beginl beginl ;
00060 
00061    
00062    
00063    static bool connect(Writer* w, const std::string& name, bool active = true) ;
00064    static bool disconnect(const std::string& name) ;
00065    static void disconnect_all() ;
00066    
00067    static void activate(const std::string& name) ;
00068    static void deactivate(const std::string& name) ;
00069    static void activate_alone(const std::string& name) ;
00070    static void activate_all() ;
00071    static void deactivate_all() ;
00072    static bool is_activated(const std::string& name) ;
00073    
00074  private:
00075    StaticLogger() ;
00076    ~StaticLogger() ;
00077    static StaticLogger* instance_ ;
00078    
00079    struct WInfo {
00080       WInfo() ;
00081       WInfo(Writer*, const std::string&, bool) ;
00082       WInfo(const WInfo&) ;
00083       WInfo operator=(const WInfo&) ;
00084       
00085       SmartPointer<Writer> writer_ ;
00086       bool active_ ;
00087       std::string name_ ;
00088    } ;
00089    
00090    typedef std::map<std::string, WInfo> Map ;
00091    static Map map_ ;
00092    
00093    static void write(const std::string& s) ;
00094    static void write_endl() ;
00095    static void write_beginl() ;
00096    
00097    friend StaticLogger& operator << (StaticLogger&, const StaticLogger::Beginl&) ;
00098    friend StaticLogger& operator << (StaticLogger&, const StaticLogger::Endl&) ;
00099    friend StaticLogger& operator << (StaticLogger&, const std::string&) ;
00100    friend StaticLogger& operator << (StaticLogger&, const char*) ;
00101    friend StaticLogger& operator << (StaticLogger&, bool) ;
00102    friend StaticLogger& operator << (StaticLogger&, short) ;
00103    friend StaticLogger& operator << (StaticLogger&, char) ;
00104    friend StaticLogger& operator << (StaticLogger&, int) ;
00105    friend StaticLogger& operator << (StaticLogger&, unsigned int) ;
00106    friend StaticLogger& operator << (StaticLogger&, long int) ;
00107    friend StaticLogger& operator << (StaticLogger&, float) ;
00108    friend StaticLogger& operator << (StaticLogger&, double) ;
00109 } ;
00110 
00111 StaticLogger& operator << (StaticLogger&, const StaticLogger::Beginl&) ;
00112 StaticLogger& operator << (StaticLogger&, const StaticLogger::Endl&) ;
00113 StaticLogger& operator << (StaticLogger&, const std::string&) ;
00114 StaticLogger& operator << (StaticLogger&, const char*) ;
00115 StaticLogger& operator << (StaticLogger&, bool) ;
00116 StaticLogger& operator << (StaticLogger&, char) ;
00117 StaticLogger& operator << (StaticLogger&, int) ;
00118 StaticLogger& operator << (StaticLogger&, unsigned int) ;
00119 StaticLogger& operator << (StaticLogger&, long int) ;
00120 StaticLogger& operator << (StaticLogger&, float) ;
00121 StaticLogger& operator << (StaticLogger&, double) ;
00122 
00123 
00124 
00125 END_LIB_NAMESPACE
00126   
00127 #endif
00128