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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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 *************************************************************/


#ifndef _RTL_LOGFILE_H_
#define _RTL_LOGFILE_H_

#include <sal/types.h>

#ifdef __cplusplus
extern "C" {
#endif


/**	This function allows to log arbitrary messages even in a product-environment.

	The logfile is created on first access and closed, when the sal-library gets unloaded.
	The file is line buffered. A log file is not created if no log messages are
	written.

	The first time, rtl_logfile_trace is called, it checks for the bootstrap variable
	RTL_LOGFILE. If the variable is not empty, it creates a file with the name
	$(RTL_LOGFILE)_$(PID).log, where $(PID) is the process id of the running process.

	@param pszformat A format string with fprintf-syntax
	@param ...       An arbitrary number of arguments for fprintf, matching the
	                 format string.
*/
void SAL_CALL rtl_logfile_trace( const sal_Char* pszFormat, ... );

/** Like rtl_logfile_trace, but prefixing every log entry with the current time
    and thread ID.

	@param format
    a format string with fprintf-like syntax

	@param ...
    an arbitrary number of arguments for fprintf, matching the given format
    string

    @since UDK 3.2.0
*/
void SAL_CALL rtl_logfile_longTrace(char const * format, ...);

/** Return if a log file is written.

	@return true if a log file is written

    @since UDK 3.2.11
*/
sal_Bool SAL_CALL rtl_logfile_hasLogFile( void );

#ifdef __cplusplus
}
#endif

#ifdef TIMELOG
#define RTL_LOGFILE_TRACE( string )  \
             rtl_logfile_longTrace( "| : %s\n", string )
#define RTL_LOGFILE_TRACE1( frmt, arg1 ) \
             rtl_logfile_longTrace( "| : " ); \
             rtl_logfile_trace( frmt, arg1 ); \
             rtl_logfile_trace( "\n" )

#define RTL_LOGFILE_TRACE2( frmt, arg1 , arg2 ) \
             rtl_logfile_longTrace( "| : " ); \
             rtl_logfile_trace( frmt, arg1 , arg2 ); \
             rtl_logfile_trace( "\n" )
#define RTL_LOGFILE_TRACE3( frmt, arg1 , arg2 , arg3 ) \
             rtl_logfile_longTrace( "| : " ); \
             rtl_logfile_trace( frmt, arg1 , arg2 , arg3 ); \
             rtl_logfile_trace( "\n" )

//	Now the macros with project and author arguments.  The strings
//	are formatted in a way, so that the log file can be parsed by
//	post processing scripts.
#define RTL_LOGFILE_TRACE_AUTHOR( project, author, string )  \
             rtl_logfile_longTrace( "| %s (%s) : %s\n", \
								project,\
								author,\
                                string )
#define RTL_LOGFILE_TRACE_AUTHOR1( project, author, frmt, arg1 ) \
             rtl_logfile_longTrace( "| %s (%s) : ", \
								project,\
								author );\
             rtl_logfile_trace( frmt, arg1 ); \
             rtl_logfile_trace( "\n" )

#define RTL_LOGFILE_TRACE_AUTHOR2( project, author, frmt, arg1 , arg2 ) \
             rtl_logfile_longTrace( "| %s (%s) : ", \
								project,\
								author ); \
             rtl_logfile_trace( frmt, arg1 , arg2 ); \
             rtl_logfile_trace( "\n" )
#define RTL_LOGFILE_TRACE_AUTHOR3( project, author, frmt, arg1 , arg2 , arg3 ) \
             rtl_logfile_longTrace( "| %s (%s) : ", \
								project,\
								author ); \
             rtl_logfile_trace( frmt, arg1 , arg2 , arg3 ); \
             rtl_logfile_trace( "\n" )
#else
#define RTL_LOGFILE_TRACE( string )  ((void)0)
#define RTL_LOGFILE_TRACE1( frmt, arg1 ) ((void)0)
#define RTL_LOGFILE_TRACE2( frmt, arg1 , arg2 ) ((void)0)
#define RTL_LOGFILE_TRACE3( frmt, arg1 , arg2 , arg3 ) ((void)0)

#define RTL_LOGFILE_TRACE_AUTHOR( project, author, string )  ((void)0)
#define RTL_LOGFILE_TRACE_AUTHOR1( project, author, frmt, arg1 ) ((void)0)
#define RTL_LOGFILE_TRACE_AUTHOR2( project, author, frmt, arg1 , arg2 ) ((void)0)
#define RTL_LOGFILE_TRACE_AUTHOR3( project, author, frmt, arg1 , arg2 , arg3 ) ((void)0)
#endif // TIMELOG
#endif