/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code 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.

Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "qbsp.h"

#define MAX_LOGFILENAMESIZE		1024

typedef struct logfile_s
{
	char filename[MAX_LOGFILENAMESIZE];
	FILE *fp;
	int numwrites;
} logfile_t;

logfile_t logfile;

//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void Log_Open(char *filename)
{
	if (!filename || !strlen(filename))
	{
		printf("openlog <filename>\n");
		return;
	} //end if
	if (logfile.fp)
	{
		printf("log file %s is already opened\n", logfile.filename);
		return;
	} //end if
	logfile.fp = fopen(filename, "wb");
	if (!logfile.fp)
	{
		printf("can't open the log file %s\n", filename);
		return;
	} //end if
	strncpy(logfile.filename, filename, MAX_LOGFILENAMESIZE);
	printf("Opened log %s\n", logfile.filename);
} //end of the function Log_Create
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void Log_Close(void)
{
	if (!logfile.fp)
	{
		printf("no log file to close\n");
		return;
	} //end if
	if (fclose(logfile.fp))
	{
		printf("can't close log file %s\n", logfile.filename);
		return;
	} //end if
	logfile.fp = NULL;
	printf("Closed log %s\n", logfile.filename);
} //end of the function Log_Close
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void Log_Shutdown(void)
{
	if (logfile.fp) Log_Close();
} //end of the function Log_Shutdown
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
void Log_UnifyEndOfLine(char *buf)
{
	int i;

	for (i = 0; buf[i]; i++)
	{
		if (buf[i] == '\n')
		{
			if (i <= 0 || buf[i-1] != '\r')
			{
				memmove(&buf[i+1], &buf[i], strlen(&buf[i])+1);
				buf[i] = '\r';
				i++;
			} //end if
		} //end if
	} //end for
} //end of the function Log_UnifyEndOfLine
//===========================================================================
//
// Parameter:			-
// Returns:				-
// Changes Globals:		-
//===========================================================================
void Log_Print(char *fmt, ...)
{
	va_list ap;
	char buf[2048];

	va_start(ap, fmt);
	vsprintf(buf, fmt, ap);
	va_end(ap);

	if (verbose)
	{
#ifdef WINBSPC
		WinBSPCPrint(buf);
#else
		printf("%s", buf);
#endif //WINBSPS
	} //end if

	if (logfile.fp)
	{
		Log_UnifyEndOfLine(buf);
		fprintf(logfile.fp, "%s", buf);
		fflush(logfile.fp);
	} //end if
} //end of the function Log_Print
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void Log_Write(char *fmt, ...)
{
	va_list ap;
	char buf[2048];

	if (!logfile.fp) return;
	va_start(ap, fmt);
	vsprintf(buf, fmt, ap);
	va_end(ap);
	Log_UnifyEndOfLine(buf);
	fprintf(logfile.fp, "%s", buf);
	fflush(logfile.fp);
} //end of the function Log_Write
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void Log_WriteTimeStamped(char *fmt, ...)
{
	va_list ap;

	if (!logfile.fp) return;
/*	fprintf(logfile.fp, "%d   %02d:%02d:%02d:%02d   ",
					logfile.numwrites,
					(int) (botlibglobals.time / 60 / 60),
					(int) (botlibglobals.time / 60),
					(int) (botlibglobals.time),
					(int) ((int) (botlibglobals.time * 100)) -
							((int) botlibglobals.time) * 100);*/
	va_start(ap, fmt);
	vfprintf(logfile.fp, fmt, ap);
	va_end(ap);
	logfile.numwrites++;
	fflush(logfile.fp);
} //end of the function Log_Write
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
FILE *Log_FileStruct(void)
{
	return logfile.fp;
} //end of the function Log_FileStruct
//===========================================================================
//
// Parameter:				-
// Returns:					-
// Changes Globals:		-
//===========================================================================
void Log_Flush(void)
{
	if (logfile.fp) fflush(logfile.fp);
} //end of the function Log_Flush

