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123 lines
3.5 KiB
C++
123 lines
3.5 KiB
C++
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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// -=- LogWriter.h - The Log writer class.
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#ifndef __RFB_LOG_WRITER_H__
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#define __RFB_LOG_WRITER_H__
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#include <stdarg.h>
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#include <rfb/Logger.h>
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#include <rfb/Configuration.h>
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#ifdef __GNUC__
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# define __printf_attr(a, b) __attribute__((__format__ (__printf__, a, b)))
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#else
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# define __printf_attr(a, b)
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#endif // __GNUC__
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// Each log writer instance has a unique textual name,
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// and is attached to a particular Log instance and
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// is assigned a particular log level.
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#define DEF_LOGFUNCTION(name, level) \
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inline void v##name(const char* fmt, va_list ap) __printf_attr(2, 0) { \
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if (m_log && (level <= m_level)) \
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m_log->write(level, m_name, fmt, ap); \
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} \
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inline void name(const char* fmt, ...) __printf_attr(2, 3) { \
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if (m_log && (level <= m_level)) { \
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va_list ap; va_start(ap, fmt); \
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m_log->write(level, m_name, fmt, ap);\
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va_end(ap); \
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} \
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}
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namespace rfb {
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class LogWriter;
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class LogWriter {
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public:
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LogWriter(const char* name);
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~LogWriter();
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const char *getName() {return m_name;}
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void setLog(Logger *logger);
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void setLevel(int level);
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int getLevel(void) { return m_level; }
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inline void write(int level, const char* format, ...) __printf_attr(3, 4) {
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if (m_log && (level <= m_level)) {
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va_list ap;
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va_start(ap, format);
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m_log->write(level, m_name, format, ap);
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va_end(ap);
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}
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}
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static const int LEVEL_ERROR = 0;
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static const int LEVEL_STATUS = 10;
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static const int LEVEL_INFO = 30;
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static const int LEVEL_DEBUG = 100;
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DEF_LOGFUNCTION(error, LEVEL_ERROR)
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DEF_LOGFUNCTION(status, LEVEL_STATUS)
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DEF_LOGFUNCTION(info, LEVEL_INFO)
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DEF_LOGFUNCTION(debug, LEVEL_DEBUG)
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// -=- DIAGNOSTIC & HELPER ROUTINES
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static void listLogWriters(int width=79);
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// -=- CLASS FIELDS & FUNCTIONS
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static LogWriter* log_writers;
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static LogWriter* getLogWriter(const char* name);
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static bool setLogParams(const char* params);
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private:
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const char* m_name;
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int m_level;
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Logger* m_log;
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LogWriter* m_next;
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};
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class LogParameter : public StringParameter {
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public:
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LogParameter();
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virtual bool setParam(const char* v);
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// Call this to set a suitable default value.
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// Can't use the normal default mechanism for
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// this because there is no guarantee on C++
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// constructor ordering - some LogWriters may
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// not exist when LogParameter gets constructed.
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// NB: The default value must exist for the
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// lifetime of the process!
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void setDefault(const char* v);
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};
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extern LogParameter logParams;
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};
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#endif // __RFB_LOG_WRITER_H__
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