// this function is a wrapper around strftime(3)
// allows to exclude the usage of wxDateTime
static wxString TimeStamp(const wxString& format, time_t t)
{
wxChar buf[4096];
struct tm tm;
if ( !wxStrftime(buf, WXSIZEOF(buf), format, wxLocaltime_r(&t, &tm)) )
{
// buffer is too small?
wxFAIL_MSG(wxT("strftime() failed"));
}
return wxString(buf);
}
// this function is a wrapper around strftime(3)
// allows to exclude the usage of wxDateTime
static wxString TimeStamp(const wxString& format, time_t t)
{
#if wxUSE_DATETIME
wxChar buf[4096];
struct tm tm;
if ( !wxStrftime(buf, WXSIZEOF(buf), format, wxLocaltime_r(&t, &tm)) )
{
// buffer is too small?
wxFAIL_MSG(_T("strftime() failed"));
}
return wxString(buf);
#else // !wxUSE_DATETIME
return wxEmptyString;
#endif // wxUSE_DATETIME/!wxUSE_DATETIME
}
void wxLog::TimeStamp(wxString *str)
{
#if wxUSE_DATETIME
if ( ms_timestamp )
{
wxChar buf[256];
time_t timeNow;
(void)time(&timeNow);
struct tm tm;
wxStrftime(buf, WXSIZEOF(buf),
ms_timestamp, wxLocaltime_r(&timeNow, &tm));
str->Empty();
*str << buf << wxT(": ");
}
#endif // wxUSE_DATETIME
}
// returns the time zone in the C sense, i.e. the difference UTC - local
// (in seconds)
int wxGetTimeZone()
{
#ifdef WX_GMTOFF_IN_TM
// set to true when the timezone is set
static bool s_timezoneSet = false;
static long gmtoffset = LONG_MAX; // invalid timezone
// ensure that the timezone variable is set by calling wxLocaltime_r
if ( !s_timezoneSet )
{
// just call wxLocaltime_r() instead of figuring out whether this
// system supports tzset(), _tzset() or something else
time_t t = time(NULL);
struct tm tm;
wxLocaltime_r(&t, &tm);
s_timezoneSet = true;
// note that GMT offset is the opposite of time zone and so to return
// consistent results in both WX_GMTOFF_IN_TM and !WX_GMTOFF_IN_TM
// cases we have to negate it
gmtoffset = -tm.tm_gmtoff;
// this function is supposed to return the same value whether DST is
// enabled or not, so we need to use an additional offset if DST is on
// as tm_gmtoff already does include it
if ( tm.tm_isdst )
gmtoffset += 3600;
}
return (int)gmtoffset;
#elif defined(__DJGPP__) || defined(__WINE__)
struct timeb tb;
ftime(&tb);
return tb.timezone*60;
#elif defined(__VISUALC__)
// We must initialize the time zone information before using it (this will
// be done only once internally).
_tzset();
// Starting with VC++ 8 timezone variable is deprecated and is not even
// available in some standard library version so use the new function for
// accessing it instead.
#if wxCHECK_VISUALC_VERSION(8)
long t;
_get_timezone(&t);
return t;
#else // VC++ < 8
return timezone;
#endif
#else // Use some kind of time zone variable.
// In any case we must initialize the time zone before using it.
tzset();
#if defined(WX_TIMEZONE) // If WX_TIMEZONE was defined by configure, use it.
return WX_TIMEZONE;
#elif defined(__BORLANDC__) || defined(__MINGW32__)
return _timezone;
#else // unknown platform -- assume it has timezone
return timezone;
#endif // different time zone variables
#endif // different ways to determine time zone
}
