//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include <tchar.h>
//---------------------------------------------------------------------------

#pragma argsused

//---------------------------------------------------------------------------
#define _XOPEN_SOURCE    /* glibc2 needs this */
#include <time.h>
#include <stdio.h>

// òî÷íîå âðåìÿ
struct prec_tm {
	struct tm tm;		// ñòàíäàðòíûé timestamp
	unsigned char ss;	// ñàíòèñåêóíäû
};

// òî÷íîå âðåìÿ -> êîë-âî ñàíòèñåêóíä (!!)
int time2ss(struct prec_tm * ptm, __int64 * ss) {
	time_t time = mktime(&ptm->tm);
	if (time == (time_t)-1) {
		fprintf(stderr, "mktime(3) fails with error: can't convert date to time!\n");
		return 1;
	}
	*ss = ((__int64)time) * 100 + ptm->ss;
	return 0;
}

// êîë-âî ñàíòèñåêóíä -> òî÷íîå âðåìÿ (!!)
int ss2time(const __int64 * ss, struct prec_tm * ptm) {
	time_t time = (*ss)/100;
	struct tm * ret = localtime(&time);
	if (ret == NULL) {
		fprintf(stderr, "localtime_r(3) fails with error: can't convert time to date!\n");
		return 1;
	}
	ptm->tm = *ret;
	ptm->ss = (*ss)%100;
	return 0;
}

// ñòðîêà -> òî÷íîå âðåìÿ
int str2time(const char * date, struct prec_tm * ptm) {
	char *ret = strptime(date, "%d.%m.%Y %T", &ptm->tm);

//	ÿ íå ïîíÿë ñòàíäàðòà, âèäèìî îòâåòñòâåííîñòü çà êîððåêòíîñòü âõîäíûõ äàííûõ ëîæèòñÿ íà òîãî, êòî êëàä¸ò...
//	if (ret == NULL) {
//		fprintf(stderr, "strptime(3) error: can't parse date!\n");
//		return 1;
//	}
//	ptm->tm.tm_year -= 1900;

	int len = strlen(date);	// ìåäëåííàÿ îïåðàöèÿ, ó ïðèíöèïå...
	ptm->ss = atoi(date + len - 2);
	return 0;
}

// òî÷íîå âðåìÿ -> ñòðîêà
int time2str(struct prec_tm * ptm, char * buf) {
	sprintf(buf, "%.2u.%.2u.%.4u %.2u:%.2u:%.2u.%.2u", ptm->tm.tm_mday, ptm->tm.tm_mon + 1,
				ptm->tm.tm_year + 1900, ptm->tm.tm_hour, ptm->tm.tm_min, ptm->tm.tm_sec, ptm->ss);
	return 0;
}

int main(void) {
	const char date[] = "23.12.2008 10:50:59.36";
	char buf[1024];

	struct prec_tm ptm;

	str2time(date, &ptm);

	__int64 ss;
	time2ss(&ptm, &ss);
	ss2time(&ss, &ptm);

	time2str(&ptm, buf);

	printf("%s\n", buf);

	system("pause");
	return 0;
}