- // use strftime()
- tm *tm;
- if ( tz.GetOffset() == -GetTimeZone() )
- {
- // we are working with local time
- tm = localtime(&time);
-
- // should never happen
- wxCHECK_MSG( tm, wxEmptyString, _T("localtime() failed") );
- }
- else
- {
- time += (int)tz.GetOffset();
-
-#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
- int time2 = (int) time;
- if ( time2 >= 0 )
-#else
- if ( time >= 0 )
-#endif
- {
- tm = gmtime(&time);
-
- // should never happen
- wxCHECK_MSG( tm, wxEmptyString, _T("gmtime() failed") );
- }
- else
- {
- tm = (struct tm *)NULL;
- }
- }
-
- if ( tm )
- {
- return CallStrftime(format, tm);
- }
- //else: use generic code below
- }
-
- // we only parse ANSI C format specifications here, no POSIX 2
- // complications, no GNU extensions but we do add support for a "%l" format
- // specifier allowing to get the number of milliseconds
- Tm tm = GetTm(tz);
-
- // used for calls to strftime() when we only deal with time
- struct tm tmTimeOnly;
- tmTimeOnly.tm_hour = tm.hour;
- tmTimeOnly.tm_min = tm.min;
- tmTimeOnly.tm_sec = tm.sec;
- tmTimeOnly.tm_wday = 0;
- tmTimeOnly.tm_yday = 0;
- tmTimeOnly.tm_mday = 1; // any date will do
- tmTimeOnly.tm_mon = 0;
- tmTimeOnly.tm_year = 76;
- tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves
-
- wxString tmp, res, fmt;
- for ( const wxChar *p = format; *p; p++ )
- {
- if ( *p != _T('%') )
- {
- // copy as is
- res += *p;
-
- continue;
- }
-
- // set the default format
- switch ( *++p )
- {
- case _T('Y'): // year has 4 digits
- fmt = _T("%04d");
- break;
-
- case _T('j'): // day of year has 3 digits
- case _T('l'): // milliseconds have 3 digits
- fmt = _T("%03d");
- break;
-
- case _T('w'): // week day as number has only one
- fmt = _T("%d");
- break;
-
- default:
- // it's either another valid format specifier in which case
- // the format is "%02d" (for all the rest) or we have the
- // field width preceding the format in which case it will
- // override the default format anyhow
- fmt = _T("%02d");
- }
-
- bool restart = TRUE;
- while ( restart )
- {
- restart = FALSE;
-
- // start of the format specification
- switch ( *p )
- {
- case _T('a'): // a weekday name
- case _T('A'):
- // second parameter should be TRUE for abbreviated names
- res += GetWeekDayName(tm.GetWeekDay(),
- *p == _T('a') ? Name_Abbr : Name_Full);
- break;
-
- case _T('b'): // a month name
- case _T('B'):
- res += GetMonthName(tm.mon,
- *p == _T('b') ? Name_Abbr : Name_Full);
- break;
-
- case _T('c'): // locale default date and time representation
- case _T('x'): // locale default date representation
- //
- // the problem: there is no way to know what do these format
- // specifications correspond to for the current locale.
- //
- // the solution: use a hack and still use strftime(): first
- // find the YEAR which is a year in the strftime() range (1970
- // - 2038) whose Jan 1 falls on the same week day as the Jan 1
- // of the real year. Then make a copy of the format and
- // replace all occurences of YEAR in it with some unique
- // string not appearing anywhere else in it, then use
- // strftime() to format the date in year YEAR and then replace
- // YEAR back by the real year and the unique replacement
- // string back with YEAR. Notice that "all occurences of YEAR"
- // means all occurences of 4 digit as well as 2 digit form!
- //
- // the bugs: we assume that neither of %c nor %x contains any
- // fields which may change between the YEAR and real year. For
- // example, the week number (%U, %W) and the day number (%j)
- // will change if one of these years is leap and the other one
- // is not!
- {
- // find the YEAR: normally, for any year X, Jan 1 or the
- // year X + 28 is the same weekday as Jan 1 of X (because
- // the weekday advances by 1 for each normal X and by 2
- // for each leap X, hence by 5 every 4 years or by 35
- // which is 0 mod 7 every 28 years) but this rule breaks
- // down if there are years between X and Y which are
- // divisible by 4 but not leap (i.e. divisible by 100 but
- // not 400), hence the correction.
-
- int yearReal = GetYear(tz);
- int mod28 = yearReal % 28;
-
- // be careful to not go too far - we risk to leave the
- // supported range
- int year;
- if ( mod28 < 10 )
- {
- year = 1988 + mod28; // 1988 == 0 (mod 28)
- }
- else
- {
- year = 1970 + mod28 - 10; // 1970 == 10 (mod 28)
- }
-
- int nCentury = year / 100,
- nCenturyReal = yearReal / 100;
-
- // need to adjust for the years divisble by 400 which are
- // not leap but are counted like leap ones if we just take
- // the number of centuries in between for nLostWeekDays
- int nLostWeekDays = (nCentury - nCenturyReal) -
- (nCentury / 4 - nCenturyReal / 4);
-
- // we have to gain back the "lost" weekdays: note that the
- // effect of this loop is to not do anything to
- // nLostWeekDays (which we won't use any more), but to
- // (indirectly) set the year correctly
- while ( (nLostWeekDays % 7) != 0 )
- {
- nLostWeekDays += year++ % 4 ? 1 : 2;
- }
-
- // at any rate, we couldn't go further than 1988 + 9 + 28!
- wxASSERT_MSG( year < 2030,
- _T("logic error in wxDateTime::Format") );
-
- wxString strYear, strYear2;
- strYear.Printf(_T("%d"), year);
- strYear2.Printf(_T("%d"), year % 100);
-
- // find two strings not occuring in format (this is surely
- // not optimal way of doing it... improvements welcome!)
- wxString fmt = format;
- wxString replacement = (wxChar)-1;
- while ( fmt.Find(replacement) != wxNOT_FOUND )
- {
- replacement << (wxChar)-1;
- }
-
- wxString replacement2 = (wxChar)-2;
- while ( fmt.Find(replacement) != wxNOT_FOUND )
- {
- replacement << (wxChar)-2;
- }
-
- // replace all occurences of year with it
- bool wasReplaced = fmt.Replace(strYear, replacement) > 0;
- if ( !wasReplaced )
- wasReplaced = fmt.Replace(strYear2, replacement2) > 0;
-
- // use strftime() to format the same date but in supported
- // year
- //
- // NB: we assume that strftime() doesn't check for the
- // date validity and will happily format the date
- // corresponding to Feb 29 of a non leap year (which
- // may happen if yearReal was leap and year is not)
- struct tm tmAdjusted;
- InitTm(tmAdjusted);
- tmAdjusted.tm_hour = tm.hour;
- tmAdjusted.tm_min = tm.min;
- tmAdjusted.tm_sec = tm.sec;
- tmAdjusted.tm_wday = tm.GetWeekDay();
- tmAdjusted.tm_yday = GetDayOfYear();
- tmAdjusted.tm_mday = tm.mday;
- tmAdjusted.tm_mon = tm.mon;
- tmAdjusted.tm_year = year - 1900;
- tmAdjusted.tm_isdst = 0; // no DST, already adjusted
- wxString str = CallStrftime(*p == _T('c') ? _T("%c")
- : _T("%x"),
- &tmAdjusted);
-
- // now replace the occurence of 1999 with the real year
- wxString strYearReal, strYearReal2;
- strYearReal.Printf(_T("%04d"), yearReal);
- strYearReal2.Printf(_T("%02d"), yearReal % 100);
- str.Replace(strYear, strYearReal);
- str.Replace(strYear2, strYearReal2);
-
- // and replace back all occurences of replacement string
- if ( wasReplaced )
- {
- str.Replace(replacement2, strYear2);
- str.Replace(replacement, strYear);
- }
-
- res += str;
- }
- break;
-
- case _T('d'): // day of a month (01-31)
- res += wxString::Format(fmt, tm.mday);
- break;
-
- case _T('H'): // hour in 24h format (00-23)
- res += wxString::Format(fmt, tm.hour);
- break;
-
- case _T('I'): // hour in 12h format (01-12)
- {
- // 24h -> 12h, 0h -> 12h too
- int hour12 = tm.hour > 12 ? tm.hour - 12
- : tm.hour ? tm.hour : 12;
- res += wxString::Format(fmt, hour12);
- }
- break;
-
- case _T('j'): // day of the year
- res += wxString::Format(fmt, GetDayOfYear(tz));
- break;
-
- case _T('l'): // milliseconds (NOT STANDARD)
- res += wxString::Format(fmt, GetMillisecond(tz));
- break;
-
- case _T('m'): // month as a number (01-12)
- res += wxString::Format(fmt, tm.mon + 1);
- break;
-
- case _T('M'): // minute as a decimal number (00-59)
- res += wxString::Format(fmt, tm.min);
- break;
-
- case _T('p'): // AM or PM string
- res += CallStrftime(_T("%p"), &tmTimeOnly);
- break;
-
- case _T('S'): // second as a decimal number (00-61)
- res += wxString::Format(fmt, tm.sec);
- break;
-
- case _T('U'): // week number in the year (Sunday 1st week day)
- res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz));
- break;
-
- case _T('W'): // week number in the year (Monday 1st week day)
- res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz));
- break;
-
- case _T('w'): // weekday as a number (0-6), Sunday = 0
- res += wxString::Format(fmt, tm.GetWeekDay());
- break;
-
- // case _T('x'): -- handled with "%c"
-
- case _T('X'): // locale default time representation
- // just use strftime() to format the time for us
- res += CallStrftime(_T("%X"), &tmTimeOnly);
- break;
-
- case _T('y'): // year without century (00-99)
- res += wxString::Format(fmt, tm.year % 100);
- break;
-
- case _T('Y'): // year with century
- res += wxString::Format(fmt, tm.year);
- break;
-
- case _T('Z'): // timezone name
- res += CallStrftime(_T("%Z"), &tmTimeOnly);
- break;
-
- default:
- // is it the format width?
- fmt.Empty();
- while ( *p == _T('-') || *p == _T('+') ||
- *p == _T(' ') || wxIsdigit(*p) )
- {
- fmt += *p;
- }
-
- if ( !fmt.IsEmpty() )
- {
- // we've only got the flags and width so far in fmt
- fmt.Prepend(_T('%'));
- fmt.Append(_T('d'));
-
- restart = TRUE;
-
- break;
- }
-
- // no, it wasn't the width
- wxFAIL_MSG(_T("unknown format specificator"));
-
- // fall through and just copy it nevertheless
-
- case _T('%'): // a percent sign
- res += *p;
- break;
-
- case 0: // the end of string
- wxFAIL_MSG(_T("missing format at the end of string"));
-
- // just put the '%' which was the last char in format
- res += _T('%');
- break;
- }
- }
- }
-
- return res;
-}
-
-// this function parses a string in (strict) RFC 822 format: see the section 5
-// of the RFC for the detailed description, but briefly it's something of the
-// form "Sat, 18 Dec 1999 00:48:30 +0100"
-//
-// this function is "strict" by design - it must reject anything except true
-// RFC822 time specs.
-//
-// TODO a great candidate for using reg exps
-const wxChar *wxDateTime::ParseRfc822Date(const wxChar* date)
-{
- wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") );
-
- const wxChar *p = date;
- const wxChar *comma = wxStrchr(p, _T(','));
- if ( comma )
- {
- // the part before comma is the weekday
-
- // skip it for now - we don't use but might check that it really
- // corresponds to the specfied date
- p = comma + 1;
-
- if ( *p != _T(' ') )
- {
- wxLogDebug(_T("no space after weekday in RFC822 time spec"));
-
- return (wxChar *)NULL;
- }
-
- p++; // skip space
- }
-
- // the following 1 or 2 digits are the day number
- if ( !wxIsdigit(*p) )
- {
- wxLogDebug(_T("day number expected in RFC822 time spec, none found"));
-
- return (wxChar *)NULL;
- }
-
- wxDateTime_t day = *p++ - _T('0');
- if ( wxIsdigit(*p) )
- {
- day *= 10;
- day += *p++ - _T('0');
- }
-
- if ( *p++ != _T(' ') )
- {
- return (wxChar *)NULL;
- }
-
- // the following 3 letters specify the month
- wxString monName(p, 3);
- Month mon;
- if ( monName == _T("Jan") )
- mon = Jan;
- else if ( monName == _T("Feb") )
- mon = Feb;
- else if ( monName == _T("Mar") )
- mon = Mar;
- else if ( monName == _T("Apr") )
- mon = Apr;
- else if ( monName == _T("May") )
- mon = May;
- else if ( monName == _T("Jun") )
- mon = Jun;
- else if ( monName == _T("Jul") )
- mon = Jul;
- else if ( monName == _T("Aug") )
- mon = Aug;
- else if ( monName == _T("Sep") )
- mon = Sep;
- else if ( monName == _T("Oct") )
- mon = Oct;
- else if ( monName == _T("Nov") )
- mon = Nov;
- else if ( monName == _T("Dec") )
- mon = Dec;
- else
- {
- wxLogDebug(_T("Invalid RFC 822 month name '%s'"), monName.c_str());
-
- return (wxChar *)NULL;
- }
-
- p += 3;
-
- if ( *p++ != _T(' ') )
- {
- return (wxChar *)NULL;
- }
-
- // next is the year
- if ( !wxIsdigit(*p) )
- {
- // no year?
- return (wxChar *)NULL;
- }
-
- int year = *p++ - _T('0');
-
- if ( !wxIsdigit(*p) )
- {
- // should have at least 2 digits in the year
- return (wxChar *)NULL;
- }
-
- year *= 10;
- year += *p++ - _T('0');
-
- // is it a 2 digit year (as per original RFC 822) or a 4 digit one?
- if ( wxIsdigit(*p) )
- {
- year *= 10;
- year += *p++ - _T('0');
-
- if ( !wxIsdigit(*p) )
- {
- // no 3 digit years please
- return (wxChar *)NULL;
- }
-
- year *= 10;
- year += *p++ - _T('0');
- }
-
- if ( *p++ != _T(' ') )
- {
- return (wxChar *)NULL;
- }
-
- // time is in the format hh:mm:ss and seconds are optional
- if ( !wxIsdigit(*p) )
- {
- return (wxChar *)NULL;
- }
-
- wxDateTime_t hour = *p++ - _T('0');
-
- if ( !wxIsdigit(*p) )
- {
- return (wxChar *)NULL;
- }
-
- hour *= 10;
- hour += *p++ - _T('0');
-
- if ( *p++ != _T(':') )
- {
- return (wxChar *)NULL;
- }
-
- if ( !wxIsdigit(*p) )
- {
- return (wxChar *)NULL;
- }
-
- wxDateTime_t min = *p++ - _T('0');
-
- if ( !wxIsdigit(*p) )
- {
- return (wxChar *)NULL;
- }
-
- min *= 10;
- min += *p++ - _T('0');
-
- wxDateTime_t sec = 0;
- if ( *p++ == _T(':') )
- {
- if ( !wxIsdigit(*p) )
- {
- return (wxChar *)NULL;
- }
-
- sec = *p++ - _T('0');
-
- if ( !wxIsdigit(*p) )
- {
- return (wxChar *)NULL;
- }
-
- sec *= 10;
- sec += *p++ - _T('0');
- }
-
- if ( *p++ != _T(' ') )
- {
- return (wxChar *)NULL;
- }
-
- // and now the interesting part: the timezone
- int offset;
- if ( *p == _T('-') || *p == _T('+') )
- {
- // the explicit offset given: it has the form of hhmm
- bool plus = *p++ == _T('+');
-
- if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) )
- {
- return (wxChar *)NULL;
- }
-
- // hours
- offset = 60*(10*(*p - _T('0')) + (*(p + 1) - _T('0')));
-
- p += 2;
-
- if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) )
- {
- return (wxChar *)NULL;
- }
-
- // minutes
- offset += 10*(*p - _T('0')) + (*(p + 1) - _T('0'));
-
- if ( !plus )
- {
- offset = -offset;
- }
-
- p += 2;
- }
- else
- {
- // the symbolic timezone given: may be either military timezone or one
- // of standard abbreviations
- if ( !*(p + 1) )
- {
- // military: Z = UTC, J unused, A = -1, ..., Y = +12
- static const int offsets[26] =
- {
- //A B C D E F G H I J K L M
- -1, -2, -3, -4, -5, -6, -7, -8, -9, 0, -10, -11, -12,
- //N O P R Q S T U V W Z Y Z
- +1, +2, +3, +4, +5, +6, +7, +8, +9, +10, +11, +12, 0
- };
-
- if ( *p < _T('A') || *p > _T('Z') || *p == _T('J') )
- {
- wxLogDebug(_T("Invalid militaty timezone '%c'"), *p);
-
- return (wxChar *)NULL;
- }
-
- offset = offsets[*p++ - _T('A')];
- }
- else
- {
- // abbreviation
- wxString tz = p;
- if ( tz == _T("UT") || tz == _T("UTC") || tz == _T("GMT") )
- offset = 0;
- else if ( tz == _T("AST") )
- offset = AST - GMT0;
- else if ( tz == _T("ADT") )
- offset = ADT - GMT0;
- else if ( tz == _T("EST") )
- offset = EST - GMT0;
- else if ( tz == _T("EDT") )
- offset = EDT - GMT0;
- else if ( tz == _T("CST") )
- offset = CST - GMT0;
- else if ( tz == _T("CDT") )
- offset = CDT - GMT0;
- else if ( tz == _T("MST") )
- offset = MST - GMT0;
- else if ( tz == _T("MDT") )
- offset = MDT - GMT0;
- else if ( tz == _T("PST") )
- offset = PST - GMT0;
- else if ( tz == _T("PDT") )
- offset = PDT - GMT0;
- else
- {
- wxLogDebug(_T("Unknown RFC 822 timezone '%s'"), p);
-
- return (wxChar *)NULL;
- }
-
- p += tz.length();
- }
-
- // make it minutes
- offset *= 60;
- }
-
- // the spec was correct
- Set(day, mon, year, hour, min, sec);
- MakeTimezone((wxDateTime_t)(60*offset));
-
- return p;
-}
-
-const wxChar *wxDateTime::ParseFormat(const wxChar *date,
- const wxChar *format,
- const wxDateTime& dateDef)
-{
- wxCHECK_MSG( date && format, (wxChar *)NULL,
- _T("NULL pointer in wxDateTime::ParseFormat()") );
-
- wxString str;
- unsigned long num;
-
- // what fields have we found?
- bool haveWDay = FALSE,
- haveYDay = FALSE,
- haveDay = FALSE,
- haveMon = FALSE,
- haveYear = FALSE,
- haveHour = FALSE,
- haveMin = FALSE,
- haveSec = FALSE;
-
- bool hourIsIn12hFormat = FALSE, // or in 24h one?
- isPM = FALSE; // AM by default
-
- // and the value of the items we have (init them to get rid of warnings)
- wxDateTime_t sec = 0,
- min = 0,
- hour = 0;
- WeekDay wday = Inv_WeekDay;
- wxDateTime_t yday = 0,
- mday = 0;
- wxDateTime::Month mon = Inv_Month;
- int year = 0;
-
- const wxChar *input = date;
- for ( const wxChar *fmt = format; *fmt; fmt++ )
- {
- if ( *fmt != _T('%') )
- {
- if ( wxIsspace(*fmt) )
- {
- // a white space in the format string matches 0 or more white
- // spaces in the input
- while ( wxIsspace(*input) )
- {
- input++;
- }
- }
- else // !space
- {
- // any other character (not whitespace, not '%') must be
- // matched by itself in the input
- if ( *input++ != *fmt )
- {
- // no match
- return (wxChar *)NULL;
- }
- }
-
- // done with this format char
- continue;
- }
-
- // start of a format specification
-
- // parse the optional width
- size_t width = 0;
- while ( wxIsdigit(*++fmt) )
- {
- width *= 10;
- width += *fmt - _T('0');
- }
-
- // the default widths for the various fields
- if ( !width )
- {
- switch ( *fmt )
- {
- case _T('Y'): // year has 4 digits
- width = 4;
- break;
-
- case _T('j'): // day of year has 3 digits
- case _T('l'): // milliseconds have 3 digits
- width = 3;
- break;
-
- case _T('w'): // week day as number has only one
- width = 1;
- break;
-
- default:
- // default for all other fields
- width = 2;
- }
- }
-
- // then the format itself
- switch ( *fmt )
- {
- case _T('a'): // a weekday name
- case _T('A'):
- {
- int flag = *fmt == _T('a') ? Name_Abbr : Name_Full;
- wday = GetWeekDayFromName(GetAlphaToken(input), flag);
- if ( wday == Inv_WeekDay )
- {
- // no match
- return (wxChar *)NULL;
- }
- }
- haveWDay = TRUE;
- break;
-
- case _T('b'): // a month name
- case _T('B'):
- {
- int flag = *fmt == _T('b') ? Name_Abbr : Name_Full;
- mon = GetMonthFromName(GetAlphaToken(input), flag);
- if ( mon == Inv_Month )
- {
- // no match
- return (wxChar *)NULL;
- }
- }
- haveMon = TRUE;
- break;
-
- case _T('c'): // locale default date and time representation
- {
- wxDateTime dt;
-
- // this is the format which corresponds to ctime() output
- // and strptime("%c") should parse it, so try it first
- static const wxChar *fmtCtime = _T("%a %b %d %H:%M:%S %Y");
-
- const wxChar *result = dt.ParseFormat(input, fmtCtime);
- if ( !result )
- {
- result = dt.ParseFormat(input, _T("%x %X"));
- }
-
- if ( !result )
- {
- result = dt.ParseFormat(input, _T("%X %x"));
- }
-
- if ( !result )
- {
- // we've tried everything and still no match
- return (wxChar *)NULL;
- }
-
- Tm tm = dt.GetTm();
-
- haveDay = haveMon = haveYear =
- haveHour = haveMin = haveSec = TRUE;
-
- hour = tm.hour;
- min = tm.min;
- sec = tm.sec;
-
- year = tm.year;
- mon = tm.mon;
- mday = tm.mday;
-
- input = result;
- }
- break;
-
- case _T('d'): // day of a month (01-31)
- if ( !GetNumericToken(width, input, &num) ||
- (num > 31) || (num < 1) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- // we can't check whether the day range is correct yet, will
- // do it later - assume ok for now
- haveDay = TRUE;
- mday = (wxDateTime_t)num;
- break;
-
- case _T('H'): // hour in 24h format (00-23)
- if ( !GetNumericToken(width, input, &num) || (num > 23) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveHour = TRUE;
- hour = (wxDateTime_t)num;
- break;
-
- case _T('I'): // hour in 12h format (01-12)
- if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveHour = TRUE;
- hourIsIn12hFormat = TRUE;
- hour = (wxDateTime_t)(num % 12); // 12 should be 0
- break;
-
- case _T('j'): // day of the year
- if ( !GetNumericToken(width, input, &num) || !num || (num > 366) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveYDay = TRUE;
- yday = (wxDateTime_t)num;
- break;
-
- case _T('m'): // month as a number (01-12)
- if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveMon = TRUE;
- mon = (Month)(num - 1);
- break;
-
- case _T('M'): // minute as a decimal number (00-59)
- if ( !GetNumericToken(width, input, &num) || (num > 59) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveMin = TRUE;
- min = (wxDateTime_t)num;
- break;
-
- case _T('p'): // AM or PM string
- {
- wxString am, pm, token = GetAlphaToken(input);
-
- GetAmPmStrings(&am, &pm);
- if (am.IsEmpty() && pm.IsEmpty())
- return (wxChar *)NULL; // no am/pm strings defined
- if ( token.CmpNoCase(pm) == 0 )
- {
- isPM = TRUE;
- }
- else if ( token.CmpNoCase(am) != 0 )
- {
- // no match
- return (wxChar *)NULL;
- }
- }
- break;
-
- case _T('r'): // time as %I:%M:%S %p
- {
- wxDateTime dt;
- input = dt.ParseFormat(input, _T("%I:%M:%S %p"));
- if ( !input )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveHour = haveMin = haveSec = TRUE;
-
- Tm tm = dt.GetTm();
- hour = tm.hour;
- min = tm.min;
- sec = tm.sec;
- }
- break;
-
- case _T('R'): // time as %H:%M
- {
- wxDateTime dt;
- input = dt.ParseFormat(input, _T("%H:%M"));
- if ( !input )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveHour = haveMin = TRUE;
-
- Tm tm = dt.GetTm();
- hour = tm.hour;
- min = tm.min;
- }
-
- case _T('S'): // second as a decimal number (00-61)
- if ( !GetNumericToken(width, input, &num) || (num > 61) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveSec = TRUE;
- sec = (wxDateTime_t)num;
- break;
-
- case _T('T'): // time as %H:%M:%S
- {
- wxDateTime dt;
- input = dt.ParseFormat(input, _T("%H:%M:%S"));
- if ( !input )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveHour = haveMin = haveSec = TRUE;
-
- Tm tm = dt.GetTm();
- hour = tm.hour;
- min = tm.min;
- sec = tm.sec;
- }
- break;
-
- case _T('w'): // weekday as a number (0-6), Sunday = 0
- if ( !GetNumericToken(width, input, &num) || (wday > 6) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveWDay = TRUE;
- wday = (WeekDay)num;
- break;
-
- case _T('x'): // locale default date representation
-#ifdef HAVE_STRPTIME
- // try using strptime() -- it may fail even if the input is
- // correct but the date is out of range, so we will fall back
- // to our generic code anyhow
- {
- struct tm tm;
-
- const wxChar *result = CallStrptime(input, "%x", &tm);
- if ( result )
- {
- input = result;
-
- haveDay = haveMon = haveYear = TRUE;
-
- year = 1900 + tm.tm_year;
- mon = (Month)tm.tm_mon;
- mday = tm.tm_mday;
-
- break;
- }
- }
-#endif // HAVE_STRPTIME
-
- // TODO query the LOCALE_IDATE setting under Win32
- {
- wxDateTime dt;
-
- wxString fmtDate, fmtDateAlt;
- if ( IsWestEuropeanCountry(GetCountry()) ||
- GetCountry() == Russia )
- {
- fmtDate = _T("%d/%m/%y");
- fmtDateAlt = _T("%m/%d/%y");
- }
- else // assume USA
- {
- fmtDate = _T("%m/%d/%y");
- fmtDateAlt = _T("%d/%m/%y");
- }
-
- const wxChar *result = dt.ParseFormat(input, fmtDate);
-
- if ( !result )
- {
- // ok, be nice and try another one
- result = dt.ParseFormat(input, fmtDateAlt);
- }
-
- if ( !result )
- {
- // bad luck
- return (wxChar *)NULL;
- }
-
- Tm tm = dt.GetTm();
-
- haveDay = haveMon = haveYear = TRUE;
-
- year = tm.year;
- mon = tm.mon;
- mday = tm.mday;
-
- input = result;
- }
-
- break;
-
- case _T('X'): // locale default time representation
-#ifdef HAVE_STRPTIME
- {
- // use strptime() to do it for us (FIXME !Unicode friendly)
- struct tm tm;
- input = CallStrptime(input, "%X", &tm);
- if ( !input )
- {
- return (wxChar *)NULL;
- }
-
- haveHour = haveMin = haveSec = TRUE;
-
- hour = tm.tm_hour;
- min = tm.tm_min;
- sec = tm.tm_sec;
- }
-#else // !HAVE_STRPTIME
- // TODO under Win32 we can query the LOCALE_ITIME system
- // setting which says whether the default time format is
- // 24 or 12 hour
- {
- // try to parse what follows as "%H:%M:%S" and, if this
- // fails, as "%I:%M:%S %p" - this should catch the most
- // common cases
- wxDateTime dt;
-
- const wxChar *result = dt.ParseFormat(input, _T("%T"));
- if ( !result )
- {
- result = dt.ParseFormat(input, _T("%r"));
- }
-
- if ( !result )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveHour = haveMin = haveSec = TRUE;
-
- Tm tm = dt.GetTm();
- hour = tm.hour;
- min = tm.min;
- sec = tm.sec;
-
- input = result;
- }
-#endif // HAVE_STRPTIME/!HAVE_STRPTIME
- break;
-
- case _T('y'): // year without century (00-99)
- if ( !GetNumericToken(width, input, &num) || (num > 99) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveYear = TRUE;
-
- // TODO should have an option for roll over date instead of
- // hard coding it here
- year = (num > 30 ? 1900 : 2000) + (wxDateTime_t)num;
- break;
-
- case _T('Y'): // year with century
- if ( !GetNumericToken(width, input, &num) )
- {
- // no match
- return (wxChar *)NULL;
- }
-
- haveYear = TRUE;
- year = (wxDateTime_t)num;
- break;
-
- case _T('Z'): // timezone name
- wxFAIL_MSG(_T("TODO"));
- break;
-
- case _T('%'): // a percent sign
- if ( *input++ != _T('%') )
- {
- // no match
- return (wxChar *)NULL;
- }
- break;
-
- case 0: // the end of string
- wxFAIL_MSG(_T("unexpected format end"));
-
- // fall through
-
- default: // not a known format spec
- return (wxChar *)NULL;
- }
- }
-
- // format matched, try to construct a date from what we have now
- Tm tmDef;
- if ( dateDef.IsValid() )
- {
- // take this date as default
- tmDef = dateDef.GetTm();
- }
- else if ( IsValid() )
- {
- // if this date is valid, don't change it
- tmDef = GetTm();
- }
- else
- {
- // no default and this date is invalid - fall back to Today()
- tmDef = Today().GetTm();
- }
-
- Tm tm = tmDef;
-
- // set the date
- if ( haveYear )
- {
- tm.year = year;
- }
-
- // TODO we don't check here that the values are consistent, if both year
- // day and month/day were found, we just ignore the year day and we
- // also always ignore the week day
- if ( haveMon && haveDay )
- {
- if ( mday > GetNumOfDaysInMonth(tm.year, mon) )
- {
- wxLogDebug(_T("bad month day in wxDateTime::ParseFormat"));
-
- return (wxChar *)NULL;
- }
-
- tm.mon = mon;
- tm.mday = mday;
- }
- else if ( haveYDay )
- {
- if ( yday > GetNumberOfDays(tm.year) )
- {
- wxLogDebug(_T("bad year day in wxDateTime::ParseFormat"));
-
- return (wxChar *)NULL;
- }
-
- Tm tm2 = wxDateTime(1, Jan, tm.year).SetToYearDay(yday).GetTm();
-
- tm.mon = tm2.mon;
- tm.mday = tm2.mday;
- }
-
- // deal with AM/PM
- if ( haveHour && hourIsIn12hFormat && isPM )
- {
- // translate to 24hour format
- hour += 12;
- }
- //else: either already in 24h format or no translation needed
-
- // set the time
- if ( haveHour )
- {
- tm.hour = hour;
- }
-
- if ( haveMin )
- {
- tm.min = min;
- }
-
- if ( haveSec )
- {
- tm.sec = sec;
- }
-
- Set(tm);
-
- // finally check that the week day is consistent -- if we had it
- if ( haveWDay && GetWeekDay() != wday )
- {
- wxLogDebug(_T("inconsistsnet week day in wxDateTime::ParseFormat()"));
-
- return NULL;
- }
-
- return input;
-}
-
-const wxChar *wxDateTime::ParseDateTime(const wxChar *date)
-{
- wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") );
-
- // Set to current day and hour, so strings like '14:00' becomes today at
- // 14, not some other random date
- wxDateTime dtDate = wxDateTime::Today();
- wxDateTime dtTime = wxDateTime::Today();
-
- const wxChar* pchTime;
-
- // Try to parse the beginning of the string as a date
- const wxChar* pchDate = dtDate.ParseDate(date);
-
- // We got a date in the beginning, see if there is a time specified after the date
- if ( pchDate )
- {
- // Skip spaces, as the ParseTime() function fails on spaces
- while ( wxIsspace(*pchDate) )
- pchDate++;
-
- pchTime = dtTime.ParseTime(pchDate);
- }
- else // no date in the beginning
- {
- // check and see if we have a time followed by a date
- pchTime = dtTime.ParseTime(date);
- if ( pchTime )
- {
- while ( wxIsspace(*pchTime) )
- pchTime++;
-
- pchDate = dtDate.ParseDate(pchTime);
- }
- }
-
- // If we have a date specified, set our own data to the same date
- if ( !pchDate || !pchTime )
- return NULL;
-
- Set(dtDate.GetDay(), dtDate.GetMonth(), dtDate.GetYear(),
- dtTime.GetHour(), dtTime.GetMinute(), dtTime.GetSecond(),
- dtTime.GetMillisecond());
-
- // Return endpoint of scan
- return pchDate > pchTime ? pchDate : pchTime;
-}
-
-const wxChar *wxDateTime::ParseDate(const wxChar *date)
-{
- // this is a simplified version of ParseDateTime() which understands only
- // "today" (for wxDate compatibility) and digits only otherwise (and not
- // all esoteric constructions ParseDateTime() knows about)
-
- wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") );
-
- const wxChar *p = date;
- while ( wxIsspace(*p) )
- p++;
-
- // some special cases
- static struct
- {
- const wxChar *str;
- int dayDiffFromToday;
- } literalDates[] =
- {
- { wxTRANSLATE("today"), 0 },
- { wxTRANSLATE("yesterday"), -1 },
- { wxTRANSLATE("tomorrow"), 1 },
- };
-
- for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ )
- {
- wxString date = wxGetTranslation(literalDates[n].str);
- size_t len = date.length();
- if ( wxStrlen(p) >= len && (wxString(p, len).CmpNoCase(date) == 0) )
- {
- // nothing can follow this, so stop here
- p += len;
-
- int dayDiffFromToday = literalDates[n].dayDiffFromToday;
- *this = Today();
- if ( dayDiffFromToday )
- {
- *this += wxDateSpan::Days(dayDiffFromToday);
- }
-
- return p;
- }
- }
-
- // We try to guess what we have here: for each new (numeric) token, we
- // determine if it can be a month, day or a year. Of course, there is an
- // ambiguity as some numbers may be days as well as months, so we also
- // have the ability to back track.
-
- // what do we have?
- bool haveDay = FALSE, // the months day?
- haveWDay = FALSE, // the day of week?
- haveMon = FALSE, // the month?
- haveYear = FALSE; // the year?
-
- // and the value of the items we have (init them to get rid of warnings)
- WeekDay wday = Inv_WeekDay;
- wxDateTime_t day = 0;
- wxDateTime::Month mon = Inv_Month;
- int year = 0;
-
- // tokenize the string
- size_t nPosCur = 0;
- static const wxChar *dateDelimiters = _T(".,/-\t\r\n ");
- wxStringTokenizer tok(p, dateDelimiters);
- while ( tok.HasMoreTokens() )
- {
- wxString token = tok.GetNextToken();
- if ( !token )
- continue;
-
- // is it a number?
- unsigned long val;
- if ( token.ToULong(&val) )
- {
- // guess what this number is
-
- bool isDay = FALSE,
- isMonth = FALSE,
- isYear = FALSE;
-
- if ( !haveMon && val > 0 && val <= 12 )
- {
- // assume it is month
- isMonth = TRUE;
- }
- else // not the month
- {
- if ( haveDay )
- {
- // this can only be the year
- isYear = TRUE;
- }
- else // may be either day or year
- {
- wxDateTime_t maxDays = haveMon
- ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon)
- : 31;
-
- // can it be day?
- if ( (val == 0) || (val > (unsigned long)maxDays) )
- {
- // no
- isYear = TRUE;
- }
- else // yes, suppose it's the day
- {
- isDay = TRUE;
- }
- }
- }
-
- if ( isYear )
- {
- if ( haveYear )
- break;
-
- haveYear = TRUE;
-
- year = (wxDateTime_t)val;
- }
- else if ( isDay )
- {
- if ( haveDay )
- break;
-
- haveDay = TRUE;
-
- day = (wxDateTime_t)val;
- }
- else if ( isMonth )
- {
- haveMon = TRUE;
-
- mon = (Month)(val - 1);
- }
- }
- else // not a number
- {
- // be careful not to overwrite the current mon value
- Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr);
- if ( mon2 != Inv_Month )
- {
- // it's a month
- if ( haveMon )
- {
- // but we already have a month - maybe we guessed wrong?
- if ( !haveDay )
- {
- // no need to check in month range as always < 12, but
- // the days are counted from 1 unlike the months
- day = (wxDateTime_t)mon + 1;
- haveDay = TRUE;
- }
- else
- {
- // could possible be the year (doesn't the year come
- // before the month in the japanese format?) (FIXME)
- break;
- }
- }
-
- mon = mon2;
-
- haveMon = TRUE;
- }
- else // not a valid month name
- {
- wday = GetWeekDayFromName(token, Name_Full | Name_Abbr);
- if ( wday != Inv_WeekDay )
- {
- // a week day
- if ( haveWDay )
- {
- break;
- }
-
- haveWDay = TRUE;
- }
- else // not a valid weekday name
- {
- // try the ordinals
- static const wxChar *ordinals[] =
- {
- wxTRANSLATE("first"),
- wxTRANSLATE("second"),
- wxTRANSLATE("third"),
- wxTRANSLATE("fourth"),
- wxTRANSLATE("fifth"),
- wxTRANSLATE("sixth"),
- wxTRANSLATE("seventh"),
- wxTRANSLATE("eighth"),
- wxTRANSLATE("ninth"),
- wxTRANSLATE("tenth"),
- wxTRANSLATE("eleventh"),
- wxTRANSLATE("twelfth"),
- wxTRANSLATE("thirteenth"),
- wxTRANSLATE("fourteenth"),
- wxTRANSLATE("fifteenth"),
- wxTRANSLATE("sixteenth"),
- wxTRANSLATE("seventeenth"),
- wxTRANSLATE("eighteenth"),
- wxTRANSLATE("nineteenth"),
- wxTRANSLATE("twentieth"),
- // that's enough - otherwise we'd have problems with
- // composite (or not) ordinals
- };
-
- size_t n;
- for ( n = 0; n < WXSIZEOF(ordinals); n++ )
- {
- if ( token.CmpNoCase(ordinals[n]) == 0 )
- {
- break;
- }
- }
-
- if ( n == WXSIZEOF(ordinals) )
- {
- // stop here - something unknown
- break;
- }
-
- // it's a day
- if ( haveDay )
- {
- // don't try anything here (as in case of numeric day
- // above) - the symbolic day spec should always
- // precede the month/year
- break;
- }
-
- haveDay = TRUE;
-
- day = (wxDateTime_t)(n + 1);
- }
- }
- }
-
- nPosCur = tok.GetPosition();
- }
-
- // either no more tokens or the scan was stopped by something we couldn't
- // parse - in any case, see if we can construct a date from what we have
- if ( !haveDay && !haveWDay )
- {
- wxLogDebug(_T("ParseDate: no day, no weekday hence no date."));
-
- return (wxChar *)NULL;
- }
-
- if ( haveWDay && (haveMon || haveYear || haveDay) &&
- !(haveDay && haveMon && haveYear) )
- {
- // without adjectives (which we don't support here) the week day only
- // makes sense completely separately or with the full date
- // specification (what would "Wed 1999" mean?)
- return (wxChar *)NULL;
- }
-
- if ( !haveWDay && haveYear && !(haveDay && haveMon) )
- {
- // may be we have month and day instead of day and year?
- if ( haveDay && !haveMon )
- {
- if ( day <= 12 )
- {
- // exchange day and month
- mon = (wxDateTime::Month)(day - 1);
-
- // we're in the current year then
- if ( (year > 0) && (year <= (int)GetNumOfDaysInMonth(Inv_Year, mon)) )
- {
- day = year;
-
- haveMon = TRUE;
- haveYear = FALSE;
- }
- //else: no, can't exchange, leave haveMon == FALSE
- }
- }
-
- if ( !haveMon )
- {
- // if we give the year, month and day must be given too
- wxLogDebug(_T("ParseDate: day and month should be specified if year is."));
-
- return (wxChar *)NULL;
- }
- }
-
- if ( !haveMon )
- {
- mon = GetCurrentMonth();
- }
-
- if ( !haveYear )
- {
- year = GetCurrentYear();
- }
-
- if ( haveDay )
- {
- Set(day, mon, year);
-
- if ( haveWDay )
- {
- // check that it is really the same
- if ( GetWeekDay() != wday )
- {
- // inconsistency detected
- wxLogDebug(_T("ParseDate: inconsistent day/weekday."));
-
- return (wxChar *)NULL;
- }
- }
- }
- else // haveWDay
- {
- *this = Today();
-
- SetToWeekDayInSameWeek(wday);
- }
-
- // return the pointer to the first unparsed char
- p += nPosCur;
- if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) )
- {
- // if we couldn't parse the token after the delimiter, put back the
- // delimiter as well
- p--;
- }
-
- return p;
-}
-
-const wxChar *wxDateTime::ParseTime(const wxChar *time)
-{
- wxCHECK_MSG( time, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") );
-
- // first try some extra things
- static const struct
- {
- const wxChar *name;
- wxDateTime_t hour;
- } stdTimes[] =
- {
- { wxTRANSLATE("noon"), 12 },
- { wxTRANSLATE("midnight"), 00 },
- // anything else?
- };
-
- for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ )
- {
- wxString timeString = wxGetTranslation(stdTimes[n].name);
- size_t len = timeString.length();
- if ( timeString.CmpNoCase(wxString(time, len)) == 0 )
- {
- // casts required by DigitalMars
- Set(stdTimes[n].hour, wxDateTime_t(0), wxDateTime_t(0));
-
- return time + len;
- }
- }
-
- // try all time formats we may think about in the order from longest to
- // shortest
-
- // 12hour with AM/PM?
- const wxChar *result = ParseFormat(time, _T("%I:%M:%S %p"));
-
- if ( !result )
- {
- // normally, it's the same, but why not try it?
- result = ParseFormat(time, _T("%H:%M:%S"));
- }
-
- if ( !result )
- {
- // 12hour with AM/PM but without seconds?
- result = ParseFormat(time, _T("%I:%M %p"));
- }
-
- if ( !result )
- {
- // without seconds?
- result = ParseFormat(time, _T("%H:%M"));
- }
-
- if ( !result )
- {
- // just the hour and AM/PM?
- result = ParseFormat(time, _T("%I %p"));
- }
-
- if ( !result )
- {
- // just the hour?
- result = ParseFormat(time, _T("%H"));
- }
-
- if ( !result )
- {
- // parse the standard format: normally it is one of the formats above
- // but it may be set to something completely different by the user
- result = ParseFormat(time, _T("%X"));
- }
-
- // TODO: parse timezones
-
- return result;
-}
-
-// ----------------------------------------------------------------------------
-// Workdays and holidays support
-// ----------------------------------------------------------------------------
-
-bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const
-{
- return !wxDateTimeHolidayAuthority::IsHoliday(*this);
-}
-
-// ============================================================================
-// wxTimeSpan
-// ============================================================================
-
-// this enum is only used in wxTimeSpan::Format() below but we can't declare
-// it locally to the method as it provokes an internal compiler error in egcs
-// 2.91.60 when building with -O2
-enum TimeSpanPart
-{
- Part_Week,
- Part_Day,
- Part_Hour,
- Part_Min,
- Part_Sec,
- Part_MSec
-};
-
-// not all strftime(3) format specifiers make sense here because, for example,
-// a time span doesn't have a year nor a timezone
-//
-// Here are the ones which are supported (all of them are supported by strftime
-// as well):
-// %H hour in 24 hour format
-// %M minute (00 - 59)
-// %S second (00 - 59)
-// %% percent sign
-//
-// Also, for MFC CTimeSpan compatibility, we support
-// %D number of days
-//
-// And, to be better than MFC :-), we also have
-// %E number of wEeks
-// %l milliseconds (000 - 999)
-wxString wxTimeSpan::Format(const wxChar *format) const
-{
- wxCHECK_MSG( format, _T(""), _T("NULL format in wxTimeSpan::Format") );
-
- wxString str;
- str.Alloc(wxStrlen(format));
-
- // Suppose we have wxTimeSpan ts(1 /* hour */, 2 /* min */, 3 /* sec */)
- //
- // Then, of course, ts.Format("%H:%M:%S") must return "01:02:03", but the
- // question is what should ts.Format("%S") do? The code here returns "3273"
- // in this case (i.e. the total number of seconds, not just seconds % 60)
- // because, for me, this call means "give me entire time interval in
- // seconds" and not "give me the seconds part of the time interval"
- //
- // If we agree that it should behave like this, it is clear that the
- // interpretation of each format specifier depends on the presence of the
- // other format specs in the string: if there was "%H" before "%M", we
- // should use GetMinutes() % 60, otherwise just GetMinutes() &c
-
- // we remember the most important unit found so far
- TimeSpanPart partBiggest = Part_MSec;
-
- for ( const wxChar *pch = format; *pch; pch++ )
- {
- wxChar ch = *pch;
-
- if ( ch == _T('%') )
- {
- // the start of the format specification of the printf() below
- wxString fmtPrefix = _T('%');
-
- // the number
- long n;
-
- ch = *++pch; // get the format spec char
- switch ( ch )
- {
- default:
- wxFAIL_MSG( _T("invalid format character") );
- // fall through
-
- case _T('%'):
- str += ch;
-
- // skip the part below switch
- continue;
-
- case _T('D'):
- n = GetDays();
- if ( partBiggest < Part_Day )
- {
- n %= DAYS_PER_WEEK;
- }
- else
- {
- partBiggest = Part_Day;
- }
- break;
-
- case _T('E'):
- partBiggest = Part_Week;
- n = GetWeeks();
- break;
-
- case _T('H'):
- n = GetHours();
- if ( partBiggest < Part_Hour )
- {
- n %= HOURS_PER_DAY;
- }
- else
- {
- partBiggest = Part_Hour;
- }
-
- fmtPrefix += _T("02");
- break;
-
- case _T('l'):
- n = GetMilliseconds().ToLong();
- if ( partBiggest < Part_MSec )
- {
- n %= 1000;
- }
- //else: no need to reset partBiggest to Part_MSec, it is
- // the least significant one anyhow
-
- fmtPrefix += _T("03");
- break;
-
- case _T('M'):
- n = GetMinutes();
- if ( partBiggest < Part_Min )
- {
- n %= MIN_PER_HOUR;
- }
- else
- {
- partBiggest = Part_Min;
- }
-
- fmtPrefix += _T("02");
- break;
-
- case _T('S'):
- n = GetSeconds().ToLong();
- if ( partBiggest < Part_Sec )
- {
- n %= SEC_PER_MIN;
- }
- else
- {
- partBiggest = Part_Sec;
- }
-
- fmtPrefix += _T("02");
- break;
- }
-
- str += wxString::Format(fmtPrefix + _T("ld"), n);
- }
- else
- {
- // normal character, just copy
- str += ch;
- }
projects / wxWidgets.git / blobdiff