char *
xceasctime (const struct tm *tb)
{
static char buf[_ASCBUFSIZE];
char *p = buf;
int day, mon;
int i;
p = buf;
day = tb->tm_wday * 3;
mon = tb->tm_mon * 3;
for (i=0; i < 3; i++,p++) {
*p = *(__dnames + day + i);
*(p+4) = *(__mnames + mon + i);
}
*p = ' ';
p += 4;
*p++ = ' ';
p = store_dt(p, tb->tm_mday);
*p++ = ' ';
p = store_dt(p, tb->tm_hour);
*p++ = ':';
p = store_dt(p, tb->tm_min);
*p++ = ':';
p = store_dt(p, tb->tm_sec);
*p++ = ' ';
p = store_dt(p, 19 + (tb->tm_year/100));
p = store_dt(p, tb->tm_year%100);
*p++ = '\n';
*p = '\0';
return buf;
}
errno_t __cdecl _tasctime_s (
_TSCHAR *buffer,
size_t sizeInChars,
const struct tm *tb
)
{
_TSCHAR *p = buffer;
int day, mon;
int i;
_VALIDATE_RETURN_ERRCODE(
( buffer != NULL ) && ( sizeInChars > 0 ),
EINVAL
)
_RESET_STRING(buffer, sizeInChars);
_VALIDATE_RETURN_ERRCODE(
( sizeInChars >= _ASCBUFSIZE ),
EINVAL
)
_VALIDATE_RETURN_ERRCODE(
( tb != NULL ),
EINVAL
)
_VALIDATE_RETURN_ERRCODE(
( tb->tm_year >= 0 ),
EINVAL
)
// month 0 based
_VALIDATE_RETURN_ERRCODE(
( ( tb->tm_mon >= 0 ) && ( tb->tm_mon <= 11 ) ),
EINVAL
)
// hour/min/sec 0 based
_VALIDATE_RETURN_ERRCODE(
( ( tb->tm_hour >= 0 ) && ( tb->tm_hour <= 23 ) ),
EINVAL
)
_VALIDATE_RETURN_ERRCODE(
( ( tb->tm_min >= 0 ) && ( tb->tm_min <= 59 ) ),
EINVAL
)
_VALIDATE_RETURN_ERRCODE(
( ( tb->tm_sec >= 0 ) && ( tb->tm_sec <= 59 ) ),
EINVAL
)
// day 1 based
_VALIDATE_RETURN_ERRCODE(
(
( tb->tm_mday >= 1 ) &&
(
// Day is in valid range for the month
( ( _days[ tb->tm_mon + 1 ] - _days[ tb->tm_mon ] ) >=
tb->tm_mday ) ||
// Special case for Feb in a leap year
(
( IS_LEAP_YEAR( tb->tm_year + 1900 ) ) &&
( tb->tm_mon == 1 ) &&
( tb->tm_mday <= 29 )
)
)
),
EINVAL
)
// week day 0 based
_VALIDATE_RETURN_ERRCODE(
( ( tb->tm_wday >= 0 ) && ( tb->tm_wday <= 6 ) ),
EINVAL
)
/* copy day and month names into the buffer */
day = tb->tm_wday * 3; /* index to correct day string */
mon = tb->tm_mon * 3; /* index to correct month string */
for (i=0; i < 3; i++,p++) {
*p = *(__dnames + day + i);
*(p+4) = *(__mnames + mon + i);
}
*p = _T(' '); /* blank between day and month */
p += 4;
*p++ = _T(' ');
p = store_dt(p, tb->tm_mday); /* day of the month (1-31) */
*p++ = _T(' ');
p = store_dt(p, tb->tm_hour); /* hours (0-23) */
*p++ = _T(':');
p = store_dt(p, tb->tm_min); /* minutes (0-59) */
*p++ = _T(':');
p = store_dt(p, tb->tm_sec); /* seconds (0-59) */
*p++ = _T(' ');
p = store_dt(p, 19 + (tb->tm_year/100)); /* year (after 1900) */
p = store_dt(p, tb->tm_year%100);
*p++ = _T('\n');
*p = _T('\0');
return 0;
}
