#include "logfile.h"
#include "pstring.h"
#include <stdio.h>
#include <stdarg.h>

#ifdef _DEBUG
static bool log_enable = true;
#else
static bool log_enable = false;
#endif


void log_Enable(bool enable)
{
	log_enable= true;
}


void log_Disable()
{
	log_enable = false;
}


logfile::logfile()
{
	fp = NULL;
}


logfile::~logfile()
{
	end();
}

																
// restarts the logfile (opens a new one.)
void logfile::start(const char *fname, const char *longname)
{
	if (log_enable) {
		try
		{
			fp = (FILE*)fopen(fname, "wt");
			logfile::printf("%s\n",longname);
		}
		catch(...)
		{
			fp = NULL;
		}
	}
}
	

void logfile::end()
{
	if (fp) {
		try
		{
			fclose((FILE*)fp);
			fp = NULL;
		}
		catch(...)
		{
			fp = NULL;
		}
	}
}


void logfile::printf(const char *fmt, ...)
{
	if (fp && fmt) {
		char msg[256];
		va_list arglist;
		va_start(arglist,fmt);
		Pvsprintf(msg,sizeof(msg),fmt,arglist);
		va_end(arglist);

		logfile::puts(msg);
	}
}


void logfile::puts(const char *msg)
{
	if (fp && msg) {
		try
		{
			fputs(msg,(FILE*)fp);
		}
		catch(...)
		{
			end();
		}
	}
}


void logfile::update()
{
	if (fp) {
		try
		{
			fflush((FILE*)fp);
		}
		catch(...)
		{
			end();
		}
	}
}