+ // 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 ( isdigit(*++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 ( 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 (FIXME !Unicode friendly)
+ {
+ struct tm tm;
+ const wxChar *result = strptime(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 = strptime(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);
+
+ return input;
+}
+
+const wxChar *wxDateTime::ParseDateTime(const wxChar *date)
+{
+ wxCHECK_MSG( date, (wxChar *)NULL, _T("NULL pointer in wxDateTime::Parse") );
+
+ // there is a public domain version of getdate.y, but it only works for
+ // English...
+ wxFAIL_MSG(_T("TODO"));
+
+ return (wxChar *)NULL;
+}
+
+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\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
+ {
+ wxDateTime_t maxDays = haveMon
+ ? GetNumOfDaysInMonth(haveYear ? year : Inv_Year, mon)
+ : 31;
+
+ // can it be day?
+ if ( (val == 0) || (val > (unsigned long)maxDays) ) // cast to shut up compiler warning in BCC
+ {
+ isYear = TRUE;
+ }
+ else
+ {
+ 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) &&
+ (unsigned)year <= 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;
+ }
+ }
projects / wxWidgets.git / blobdiff