claw  1.9.0
logger.hpp
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1 /*
2  CLAW - a C++ Library Absolutely Wonderful
3 
4  CLAW is a free library without any particular aim but being useful to
5  anyone.
6 
7  Copyright (C) 2005-2011 Julien Jorge
8 
9  This library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU Lesser General Public
11  License as published by the Free Software Foundation; either
12  version 2.1 of the License, or (at your option) any later version.
13 
14  This library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  Lesser General Public License for more details.
18 
19  You should have received a copy of the GNU Lesser General Public
20  License along with this library; if not, write to the Free Software
21  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 
23  contact: julien.jorge@stuff-o-matic.com
24 */
30 #ifndef __CLAW_LOGGER_HPP__
31 #define __CLAW_LOGGER_HPP__
32 
35 
36 #include <list>
37 #include <mutex>
38 #include <ostream>
39 #include <string>
40 
41 #ifndef CLAW_LOGGER_EXPORT
42 #ifdef CLAW_LOGGER_NO_EXPORT
43 #define CLAW_LOGGER_EXPORT
44 #else
45 #ifdef _WIN32
46 #ifdef claw_logger_EXPORTS
47 #define CLAW_LOGGER_EXPORT __declspec(dllexport)
48 #else
49 #define CLAW_LOGGER_EXPORT __declspec(dllimport)
50 #endif // def claw_logger_EXPORTS
51 #else // def _WIN32
52 #define CLAW_LOGGER_EXPORT
53 #endif // def _WIN32
54 #endif // def CLAW_LOGGER_NO_EXPORT
55 #endif // ndef CLAW_LOGGER_EXPORT
56 
57 namespace claw
58 {
72  class log_system
73  {
74  public:
75  typedef log_stream stream_type;
76  typedef std::list<stream_type*> stream_list_type;
77 
78  public:
79  CLAW_LOGGER_EXPORT log_system();
80  CLAW_LOGGER_EXPORT ~log_system();
81  CLAW_LOGGER_EXPORT void clear();
82 
83  CLAW_LOGGER_EXPORT void merge(stream_type* s);
84  CLAW_LOGGER_EXPORT void remove(const stream_type* s);
85  CLAW_LOGGER_EXPORT void set(stream_type* s);
86  CLAW_LOGGER_EXPORT void set_level(int lvl);
87  CLAW_LOGGER_EXPORT void set_level(const log_level& lvl);
88 
89  CLAW_LOGGER_EXPORT void flush();
90 
91  template <typename T>
92  log_system& operator<<(const T& that);
93 
94  CLAW_LOGGER_EXPORT log_system& operator<<(const log_level& that);
95  CLAW_LOGGER_EXPORT log_system& operator<<(log_system& (*pf)(log_system&));
96 
97  private:
98  void print(const std::string& s);
99 
100  private:
103  std::mutex m_mutex;
104 
107  int m_log_level;
108 
110  int m_message_level;
111 
113  stream_list_type m_stream;
114 
115  }; // class log_system
116 
117  CLAW_LOGGER_EXPORT extern log_system logger;
118 
119  CLAW_LOGGER_EXPORT log_system& lendl(log_system& log);
120 
121 }
122 
123 namespace std
124 {
125  CLAW_LOGGER_EXPORT claw::log_system& endl(claw::log_system& log);
126 }
127 
128 // template methods
129 #include <claw/logger/logger.tpp>
130 
131 #endif // __CLAW_LOGGER_HPP__
CLAW_LOGGER_EXPORT void set_level(int lvl)
Change the level of log.
Definition: logger.cpp:117
CLAW_LOGGER_EXPORT log_system & lendl(log_system &log)
Add a new line caracter to a logger and flush it.
Definition: logger.cpp:193
CLAW_LOGGER_EXPORT log_system logger
The default log system provided by claw.
Definition: logger.cpp:37
Some basic classes for logging.
CLAW_LOGGER_EXPORT void clear()
Delete the streams.
Definition: logger.cpp:61
Set the level of the next message for logger_system::operator<<().
Definition: log_level.hpp:57
CLAW_LOGGER_EXPORT void merge(stream_type *s)
Add an other output stream.
Definition: logger.cpp:77
A class implementing a logging system.
Definition: logger.hpp:72
A class to pass log information to the loggers.
Base class for streams accepting log output.
Definition: log_stream.hpp:60
CLAW_LOGGER_EXPORT log_system()
Default constructor.
Definition: logger.cpp:45
This is the main namespace.
Definition: application.hpp:49
CLAW_LOGGER_EXPORT void flush()
Flush all log streams.
Definition: logger.cpp:138
CLAW_LOGGER_EXPORT ~log_system()
Destructor.
Definition: logger.cpp:53