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| 1 | +/** \file crlog.h |
| 2 | + \brief logging class interface |
| 3 | +
|
| 4 | + CoolReader Engine |
| 5 | +
|
| 6 | + (c) Vadim Lopatin, 2000-2006 |
| 7 | + This source code is distributed under the terms of |
| 8 | + GNU General Public License. |
| 9 | +
|
| 10 | + See LICENSE file for details. |
| 11 | +*/ |
| 12 | + |
| 13 | +#ifndef __CR_LOG_H_INCLUDED__ |
| 14 | +#define __CR_LOG_H_INCLUDED__ |
| 15 | + |
| 16 | +#include <stdarg.h> |
| 17 | + |
| 18 | +/// Logger |
| 19 | +class CRLog |
| 20 | +{ |
| 21 | +public: |
| 22 | + /// log levels |
| 23 | + enum log_level { |
| 24 | + LL_FATAL, |
| 25 | + LL_ERROR, |
| 26 | + LL_WARN, |
| 27 | + LL_INFO, |
| 28 | + LL_DEBUG, |
| 29 | + LL_TRACE |
| 30 | + }; |
| 31 | + /// set current log level |
| 32 | + static void setLogLevel( log_level level ); |
| 33 | + /// returns current log level |
| 34 | + static log_level getLogLevel(); |
| 35 | + /// returns true if specified log level is enabled |
| 36 | + static bool isLogLevelEnabled( log_level level ); |
| 37 | + /// returns true if log level is DEBUG or lower |
| 38 | + static bool inline isDebugEnabled() { return isLogLevelEnabled( LL_DEBUG ); } |
| 39 | + /// returns true if log level is TRACE |
| 40 | + static bool inline isTraceEnabled() { return isLogLevelEnabled( LL_TRACE ); } |
| 41 | + /// returns true if log level is INFO or lower |
| 42 | + static bool inline isInfoEnabled() { return isLogLevelEnabled( LL_INFO ); } |
| 43 | + /// returns true if log level is WARN or lower |
| 44 | + static bool inline isWarnEnabled() { return isLogLevelEnabled( LL_WARN ); } |
| 45 | + static void fatal( const char * msg, ... ); |
| 46 | + static void error( const char * msg, ... ); |
| 47 | + static void warn( const char * msg, ... ); |
| 48 | + static void info( const char * msg, ... ); |
| 49 | + static void debug( const char * msg, ... ); |
| 50 | + static void trace( const char * msg, ... ); |
| 51 | + /// sets logger instance |
| 52 | + static void setLogger( CRLog * logger ); |
| 53 | + virtual ~CRLog(); |
| 54 | + |
| 55 | + /// write log to specified file, flush after every message if autoFlush parameter is true |
| 56 | + static void setFileLogger( const char * fname, bool autoFlush=false ); |
| 57 | + /// use stdout for output |
| 58 | + static void setStdoutLogger(); |
| 59 | + /// use stderr for output |
| 60 | + static void setStderrLogger(); |
| 61 | +protected: |
| 62 | + CRLog(); |
| 63 | + virtual void log( const char * level, const char * msg, va_list args ) = 0; |
| 64 | + log_level curr_level; |
| 65 | + static CRLog * CRLOG; |
| 66 | +}; |
| 67 | + |
| 68 | +#endif // __CR_LOG_H_INCLUDED__ |
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