2 Copyright (C) 2012 Carl Hetherington <cth@carlh.net>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef DCPOMATIC_LOG_H
21 #define DCPOMATIC_LOG_H
24 * @brief A very simple logging class.
27 #include <boost/thread/mutex.hpp>
28 #include <boost/filesystem.hpp>
29 #include <boost/signals2.hpp>
33 * @brief A very simple logging class.
35 class Log : public boost::noncopyable
41 static const int TYPE_GENERAL;
42 static const int TYPE_WARNING;
43 static const int TYPE_ERROR;
44 static const int TYPE_TIMING;
46 void log (std::string message, int type);
47 void microsecond_log (std::string message, int type);
49 void set_types (int types);
51 virtual std::string head_and_tail (int amount = 1024) const = 0;
55 /** mutex to protect the log */
56 mutable boost::mutex _mutex;
59 virtual void do_log (std::string m) = 0;
60 void config_changed ();
62 /** bit-field of log types which should be put into the log (others are ignored) */
64 boost::signals2::scoped_connection _config_connection;
67 class FileLog : public Log
70 FileLog (boost::filesystem::path file);
72 std::string head_and_tail (int amount = 1024) const;
75 void do_log (std::string m);
76 /** filename to write to */
77 boost::filesystem::path _file;
80 class NullLog : public Log
83 std::string head_and_tail (int) const {
88 void do_log (std::string) {}