log.c

//----------------------------------------------------------------------------
// EnsoniqFS plugin for TotalCommander
//
// LOGGING FUNCTIONS
//----------------------------------------------------------------------------
//
// (c) 2006 Thoralt Franz
//
// This source code was written using Dev-Cpp 4.9.9.2
// If you want to compile it, get Dev-Cpp. Normally the code should compile
// with other IDEs/compilers too (with small modifications), but I did not
// test it.
//
//----------------------------------------------------------------------------
// License
//----------------------------------------------------------------------------
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 
// MA  02110-1301, USA.
// 
// Alternatively, download a copy of the license here:
// http://www.gnu.org/licenses/gpl.txt
//----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#include "log.h"

extern int g_iOptionEnableLogging;

//----------------------------------------------------------------------------
// LOG
// 
// Append entry to logfile
// logfile is created if it doesn't exist
// 
// -> *c = pointer to null terminated string to append to log file
// <- --
//----------------------------------------------------------------------------
void LOG(const char *format, ...)
{
	va_list args;
	char cBuffer[2048];

	if(!g_iOptionEnableLogging) return;

	va_start(args, format);
	vsprintf(cBuffer, format, args);
	
	FILE *pDebug;
	pDebug = fopen(LOGFILE, "a+");
	if(NULL==pDebug) return;
	fprintf(pDebug, cBuffer);
	fclose(pDebug);
}

//----------------------------------------------------------------------------
// LOG_ERR
// 
// Append decoded error to logfile
// logfile is created if it doesn't exist
// 
// -> dwError = error code from GetLastError()
// <- --
//----------------------------------------------------------------------------
void LOG_ERR(unsigned int dwError)
{
	if(!g_iOptionEnableLogging) return;
	char *lpMsgBuf;

	FormatMessage(
		FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | 
		FORMAT_MESSAGE_IGNORE_INSERTS, NULL, dwError,
		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPTSTR) &lpMsgBuf, 0, NULL);
	LOG(lpMsgBuf); LocalFree(lpMsgBuf);
	LOG(" (code=0x%08X)\n", dwError);
}