/////////////////////////////////////////////////////////////////////////////// // Name: src/common/datetimefmt.cpp // Purpose: wxDateTime formatting & parsing code // Author: Vadim Zeitlin // Modified by: // Created: 11.05.99 // Copyright: (c) 1999 Vadim Zeitlin // parts of code taken from sndcal library by Scott E. Lee: // // Copyright 1993-1995, Scott E. Lee, all rights reserved. // Permission granted to use, copy, modify, distribute and sell // so long as the above copyright and this permission statement // are retained in all copies. // // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif #if !defined(wxUSE_DATETIME) || wxUSE_DATETIME #ifndef WX_PRECOMP #ifdef __WINDOWS__ #include "wx/msw/wrapwin.h" #endif #include "wx/string.h" #include "wx/log.h" #include "wx/intl.h" #include "wx/stopwatch.h" // for wxGetLocalTimeMillis() #include "wx/module.h" #include "wx/crt.h" #endif // WX_PRECOMP #include "wx/thread.h" #include #ifdef __WINDOWS__ #include #ifndef __WXWINCE__ #include #endif #endif #include "wx/datetime.h" #include "wx/time.h" // ============================================================================ // implementation of wxDateTime // ============================================================================ // ---------------------------------------------------------------------------- // helpers shared between datetime.cpp and datetimefmt.cpp // ---------------------------------------------------------------------------- extern void InitTm(struct tm& tm); extern wxString CallStrftime(const wxString& format, const tm* tm); // ---------------------------------------------------------------------------- // constants (see also datetime.cpp) // ---------------------------------------------------------------------------- static const int DAYS_PER_WEEK = 7; static const int HOURS_PER_DAY = 24; static const int SEC_PER_MIN = 60; static const int MIN_PER_HOUR = 60; // ---------------------------------------------------------------------------- // parsing helpers // ---------------------------------------------------------------------------- namespace { // all the functions below taking non-const wxString::const_iterator p advance // it until the end of the match // scans all digits (but no more than len) and returns the resulting number bool GetNumericToken(size_t len, wxString::const_iterator& p, const wxString::const_iterator& end, unsigned long *number) { size_t n = 1; wxString s; while ( p != end && wxIsdigit(*p) ) { s += *p++; if ( len && ++n > len ) break; } return !s.empty() && s.ToULong(number); } // scans all alphabetic characters and returns the resulting string wxString GetAlphaToken(wxString::const_iterator& p, const wxString::const_iterator& end) { wxString s; while ( p != end && wxIsalpha(*p) ) { s += *p++; } return s; } enum { DateLang_English = 1, DateLang_Local = 2 }; // return the month if the string is a month name or Inv_Month otherwise // // flags can contain wxDateTime::Name_Abbr/Name_Full or both of them and lang // can be either DateLang_Local (default) to interpret string as a localized // month name or DateLang_English to parse it as a standard English name or // their combination to interpret it in any way wxDateTime::Month GetMonthFromName(wxString::const_iterator& p, const wxString::const_iterator& end, int flags, int lang) { const wxString::const_iterator pOrig = p; const wxString name = GetAlphaToken(p, end); if ( name.empty() ) return wxDateTime::Inv_Month; wxDateTime::Month mon; for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) ) { // case-insensitive comparison either one of or with both abbreviated // and not versions if ( flags & wxDateTime::Name_Full ) { if ( lang & DateLang_English ) { if ( name.CmpNoCase(wxDateTime::GetEnglishMonthName(mon, wxDateTime::Name_Full)) == 0 ) break; } if ( lang & DateLang_Local ) { if ( name.CmpNoCase(wxDateTime::GetMonthName(mon, wxDateTime::Name_Full)) == 0 ) break; } } if ( flags & wxDateTime::Name_Abbr ) { if ( lang & DateLang_English ) { if ( name.CmpNoCase(wxDateTime::GetEnglishMonthName(mon, wxDateTime::Name_Abbr)) == 0 ) break; } if ( lang & DateLang_Local ) { // some locales (e.g. French one) use periods for the // abbreviated month names but it's never part of name so // compare it specially wxString nameAbbr = wxDateTime::GetMonthName(mon, wxDateTime::Name_Abbr); const bool hasPeriod = *nameAbbr.rbegin() == '.'; if ( hasPeriod ) nameAbbr.erase(nameAbbr.end() - 1); if ( name.CmpNoCase(nameAbbr) == 0 ) { if ( hasPeriod ) { // skip trailing period if it was part of the match if ( *p == '.' ) ++p; else // no match as no matching period continue; } break; } } } } if ( mon == wxDateTime::Inv_Month ) p = pOrig; return mon; } // return the weekday if the string is a weekday name or Inv_WeekDay otherwise // // flags and lang parameters have the same meaning as for GetMonthFromName() // above wxDateTime::WeekDay GetWeekDayFromName(wxString::const_iterator& p, const wxString::const_iterator& end, int flags, int lang) { const wxString::const_iterator pOrig = p; const wxString name = GetAlphaToken(p, end); if ( name.empty() ) return wxDateTime::Inv_WeekDay; wxDateTime::WeekDay wd; for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) ) { if ( flags & wxDateTime::Name_Full ) { if ( lang & DateLang_English ) { if ( name.CmpNoCase(wxDateTime::GetEnglishWeekDayName(wd, wxDateTime::Name_Full)) == 0 ) break; } if ( lang & DateLang_Local ) { if ( name.CmpNoCase(wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 ) break; } } if ( flags & wxDateTime::Name_Abbr ) { if ( lang & DateLang_English ) { if ( name.CmpNoCase(wxDateTime::GetEnglishWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 ) break; } if ( lang & DateLang_Local ) { if ( name.CmpNoCase(wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 ) break; } } } if ( wd == wxDateTime::Inv_WeekDay ) p = pOrig; return wd; } // return the year of the Monday of the week containing the given date int GetWeekBasedYear(const wxDateTime& dt) { const wxDateTime::Tm tm = dt.GetTm(); int year = tm.year; // The week-based year can only be different from the normal year for few // days in the beginning and the end of the year. if ( tm.yday > 361 ) { if ( dt.GetWeekOfYear() == 1 ) year++; } else if ( tm.yday < 5 ) { if ( dt.GetWeekOfYear() == 53 ) year--; } return year; } // parses string starting at given iterator using the specified format and, // optionally, a fall back format (and optionally another one... but it stops // there, really) // // if unsuccessful, returns invalid wxDateTime without changing p; otherwise // advance p to the end of the match and returns wxDateTime containing the // results of the parsing wxDateTime ParseFormatAt(wxString::const_iterator& p, const wxString::const_iterator& end, const wxString& fmt, // FIXME-VC6: using wxString() instead of wxEmptyString in the // line below results in error C2062: type 'class // wxString (__cdecl *)(void)' unexpected const wxString& fmtAlt = wxEmptyString) { const wxString str(p, end); wxString::const_iterator endParse; wxDateTime dt; // Use a default date outside of the DST period to avoid problems with // parsing the time differently depending on the today's date (which is used // as the fall back date if none is explicitly specified). static const wxDateTime dtDef(1, wxDateTime::Jan, 2012); if ( dt.ParseFormat(str, fmt, dtDef, &endParse) || (!fmtAlt.empty() && dt.ParseFormat(str, fmtAlt, dtDef, &endParse)) ) { p += endParse - str.begin(); } //else: all formats failed return dt; } } // anonymous namespace // ---------------------------------------------------------------------------- // wxDateTime to/from text representations // ---------------------------------------------------------------------------- wxString wxDateTime::Format(const wxString& formatp, const TimeZone& tz) const { wxCHECK_MSG( !formatp.empty(), wxEmptyString, wxT("NULL format in wxDateTime::Format") ); wxString format = formatp; #ifdef __WXOSX__ if ( format.Contains("%c") ) format.Replace("%c", wxLocale::GetInfo(wxLOCALE_DATE_TIME_FMT)); if ( format.Contains("%x") ) format.Replace("%x", wxLocale::GetInfo(wxLOCALE_SHORT_DATE_FMT)); if ( format.Contains("%X") ) format.Replace("%X", wxLocale::GetInfo(wxLOCALE_TIME_FMT)); #endif // we have to use our own implementation if the date is out of range of // strftime() #ifdef wxHAS_STRFTIME time_t time = GetTicks(); bool canUseStrftime = time != (time_t)-1; // We also can't use strftime() if we use non standard specifier: either // our own extension "%l" or one of "%g", "%G", "%V", "%z" which are POSIX // but not supported under Windows. for ( wxString::const_iterator p = format.begin(); canUseStrftime && p != format.end(); ++p ) { if ( *p != '%' ) continue; // set the default format switch ( (*++p).GetValue() ) { case 'l': #ifdef __WINDOWS__ case 'g': case 'G': case 'V': case 'z': #endif // __WINDOWS__ canUseStrftime = false; break; } } if ( canUseStrftime ) { // use strftime() struct tm tmstruct; struct tm *tm; if ( tz.GetOffset() == -wxGetTimeZone() ) { // we are working with local time tm = wxLocaltime_r(&time, &tmstruct); // should never happen wxCHECK_MSG( tm, wxEmptyString, wxT("wxLocaltime_r() 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 = wxGmtime_r(&time, &tmstruct); // should never happen wxCHECK_MSG( tm, wxEmptyString, wxT("wxGmtime_r() failed") ); } else { tm = (struct tm *)NULL; } } if ( tm ) { return CallStrftime(format, tm); } } //else: use generic code below #endif // wxHAS_STRFTIME // 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; memset(&tmTimeOnly, 0, sizeof(tmTimeOnly)); tmTimeOnly.tm_hour = tm.hour; tmTimeOnly.tm_min = tm.min; tmTimeOnly.tm_sec = tm.sec; tmTimeOnly.tm_mday = 1; // any date will do, use 1976-01-01 tmTimeOnly.tm_mon = 0; tmTimeOnly.tm_year = 76; tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves wxString tmp, res, fmt; for ( wxString::const_iterator p = format.begin(); p != format.end(); ++p ) { if ( *p != wxT('%') ) { // copy as is res += *p; continue; } // set the default format switch ( (*++p).GetValue() ) { case wxT('Y'): // year has 4 digits case wxT('G'): // (and ISO week year too) case wxT('z'): // time zone as well fmt = wxT("%04d"); break; case wxT('j'): // day of year has 3 digits case wxT('l'): // milliseconds have 3 digits fmt = wxT("%03d"); break; case wxT('w'): // week day as number has only one fmt = wxT("%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 = wxT("%02d"); } bool restart = true; while ( restart ) { restart = false; // start of the format specification switch ( (*p).GetValue() ) { case wxT('a'): // a weekday name case wxT('A'): // second parameter should be true for abbreviated names res += GetWeekDayName(tm.GetWeekDay(), *p == wxT('a') ? Name_Abbr : Name_Full); break; case wxT('b'): // a month name case wxT('B'): res += GetMonthName(tm.mon, *p == wxT('b') ? Name_Abbr : Name_Full); break; case wxT('c'): // locale default date and time representation case wxT('x'): // locale default date representation #ifdef wxHAS_STRFTIME // // 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 occurrences 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 occurrences of YEAR" // means all occurrences 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 of 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; } // finally move the year below 2000 so that the 2-digit // year number can never match the month or day of the // month when we do the replacements below if ( year >= 2000 ) year -= 28; wxASSERT_MSG( year >= 1970 && year < 2000, wxT("logic error in wxDateTime::Format") ); // 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 == wxT('c') ? wxT("%c") : wxT("%x"), &tmAdjusted); // now replace the replacement year with the real year: // notice that we have to replace the 4 digit year with // a unique string not appearing in strftime() output // first to prevent the 2 digit year from matching any // substring of the 4 digit year (but any day, month, // hours or minutes components should be safe because // they are never in 70-99 range) wxString replacement("|"); while ( str.find(replacement) != wxString::npos ) replacement += '|'; str.Replace(wxString::Format("%d", year), replacement); str.Replace(wxString::Format("%d", year % 100), wxString::Format("%d", yearReal % 100)); str.Replace(replacement, wxString::Format("%d", yearReal)); res += str; } #else // !wxHAS_STRFTIME // Use "%m/%d/%y %H:%M:%S" format instead res += wxString::Format(wxT("%02d/%02d/%04d %02d:%02d:%02d"), tm.mon+1,tm.mday, tm.year, tm.hour, tm.min, tm.sec); #endif // wxHAS_STRFTIME/!wxHAS_STRFTIME break; case wxT('d'): // day of a month (01-31) res += wxString::Format(fmt, tm.mday); break; case wxT('g'): // 2-digit week-based year res += wxString::Format(fmt, GetWeekBasedYear(*this) % 100); break; case wxT('G'): // week-based year with century res += wxString::Format(fmt, GetWeekBasedYear(*this)); break; case wxT('H'): // hour in 24h format (00-23) res += wxString::Format(fmt, tm.hour); break; case wxT('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 wxT('j'): // day of the year res += wxString::Format(fmt, GetDayOfYear(tz)); break; case wxT('l'): // milliseconds (NOT STANDARD) res += wxString::Format(fmt, GetMillisecond(tz)); break; case wxT('m'): // month as a number (01-12) res += wxString::Format(fmt, tm.mon + 1); break; case wxT('M'): // minute as a decimal number (00-59) res += wxString::Format(fmt, tm.min); break; case wxT('p'): // AM or PM string #ifdef wxHAS_STRFTIME res += CallStrftime(wxT("%p"), &tmTimeOnly); #else // !wxHAS_STRFTIME res += (tmTimeOnly.tm_hour > 12) ? wxT("pm") : wxT("am"); #endif // wxHAS_STRFTIME/!wxHAS_STRFTIME break; case wxT('S'): // second as a decimal number (00-61) res += wxString::Format(fmt, tm.sec); break; case wxT('U'): // week number in the year (Sunday 1st week day) res += wxString::Format(fmt, GetWeekOfYear(Sunday_First, tz)); break; case wxT('V'): // ISO week number case wxT('W'): // week number in the year (Monday 1st week day) res += wxString::Format(fmt, GetWeekOfYear(Monday_First, tz)); break; case wxT('w'): // weekday as a number (0-6), Sunday = 0 res += wxString::Format(fmt, tm.GetWeekDay()); break; // case wxT('x'): -- handled with "%c" case wxT('X'): // locale default time representation // just use strftime() to format the time for us #ifdef wxHAS_STRFTIME res += CallStrftime(wxT("%X"), &tmTimeOnly); #else // !wxHAS_STRFTIME res += wxString::Format(wxT("%02d:%02d:%02d"),tm.hour, tm.min, tm.sec); #endif // wxHAS_STRFTIME/!wxHAS_STRFTIME break; case wxT('y'): // year without century (00-99) res += wxString::Format(fmt, tm.year % 100); break; case wxT('Y'): // year with century res += wxString::Format(fmt, tm.year); break; case wxT('z'): // time zone as [-+]HHMM { int ofs = tz.GetOffset(); // The time zone offset does not include the DST, but // we do need to take it into account when showing the // time in the local time zone to the user. if ( ofs == -wxGetTimeZone() && IsDST() == 1 ) { // FIXME: As elsewhere in wxDateTime, we assume // that the DST is always 1 hour, but this is not // true in general. ofs += 3600; } if ( ofs < 0 ) { res += '-'; ofs = -ofs; } else { res += '+'; } // Converts seconds to HHMM representation. res += wxString::Format(fmt, 100*(ofs/3600) + (ofs/60)%60); } break; case wxT('Z'): // timezone name #ifdef wxHAS_STRFTIME res += CallStrftime(wxT("%Z"), &tmTimeOnly); #endif break; default: // is it the format width? for ( fmt.clear(); *p == wxT('-') || *p == wxT('+') || *p == wxT(' ') || wxIsdigit(*p); ++p ) { fmt += *p; } if ( !fmt.empty() ) { // we've only got the flags and width so far in fmt fmt.Prepend(wxT('%')); fmt.Append(wxT('d')); restart = true; break; } // no, it wasn't the width wxFAIL_MSG(wxT("unknown format specifier")); // fall through and just copy it nevertheless case wxT('%'): // a percent sign res += *p; break; case 0: // the end of string wxFAIL_MSG(wxT("missing format at the end of string")); // just put the '%' which was the last char in format res += wxT('%'); 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. bool wxDateTime::ParseRfc822Date(const wxString& date, wxString::const_iterator *end) { const wxString::const_iterator pEnd = date.end(); wxString::const_iterator p = date.begin(); // 1. week day const wxDateTime::WeekDay wd = GetWeekDayFromName(p, pEnd, Name_Abbr, DateLang_English); if ( wd == Inv_WeekDay ) return false; //else: ignore week day for now, we could also check that it really // corresponds to the specified date // 2. separating comma if ( *p++ != ',' || *p++ != ' ' ) return false; // 3. day number if ( !wxIsdigit(*p) ) return false; wxDateTime_t day = (wxDateTime_t)(*p++ - '0'); if ( wxIsdigit(*p) ) { day *= 10; day = (wxDateTime_t)(day + (*p++ - '0')); } if ( *p++ != ' ' ) return false; // 4. month name const Month mon = GetMonthFromName(p, pEnd, Name_Abbr, DateLang_English); if ( mon == Inv_Month ) return false; if ( *p++ != ' ' ) return false; // 5. year if ( !wxIsdigit(*p) ) return false; int year = *p++ - '0'; if ( !wxIsdigit(*p) ) // should have at least 2 digits in the year return false; year *= 10; year += *p++ - '0'; // is it a 2 digit year (as per original RFC 822) or a 4 digit one? if ( wxIsdigit(*p) ) { year *= 10; year += *p++ - '0'; if ( !wxIsdigit(*p) ) { // no 3 digit years please return false; } year *= 10; year += *p++ - '0'; } if ( *p++ != ' ' ) return false; // 6. time in hh:mm:ss format with seconds being optional if ( !wxIsdigit(*p) ) return false; wxDateTime_t hour = (wxDateTime_t)(*p++ - '0'); if ( !wxIsdigit(*p) ) return false; hour *= 10; hour = (wxDateTime_t)(hour + (*p++ - '0')); if ( *p++ != ':' ) return false; if ( !wxIsdigit(*p) ) return false; wxDateTime_t min = (wxDateTime_t)(*p++ - '0'); if ( !wxIsdigit(*p) ) return false; min *= 10; min += (wxDateTime_t)(*p++ - '0'); wxDateTime_t sec = 0; if ( *p == ':' ) { p++; if ( !wxIsdigit(*p) ) return false; sec = (wxDateTime_t)(*p++ - '0'); if ( !wxIsdigit(*p) ) return false; sec *= 10; sec += (wxDateTime_t)(*p++ - '0'); } if ( *p++ != ' ' ) return false; // 7. now the interesting part: the timezone int offset = 0; // just to suppress warnings if ( *p == '-' || *p == '+' ) { // the explicit offset given: it has the form of hhmm bool plus = *p++ == '+'; if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) return false; // hours offset = MIN_PER_HOUR*(10*(*p - '0') + (*(p + 1) - '0')); p += 2; if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) ) return false; // minutes offset += 10*(*p - '0') + (*(p + 1) - '0'); if ( !plus ) offset = -offset; p += 2; } else // not numeric { // 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 < wxT('A') || *p > wxT('Z') || *p == wxT('J') ) return false; offset = offsets[*p++ - 'A']; } else { // abbreviation const wxString tz(p, date.end()); if ( tz == wxT("UT") || tz == wxT("UTC") || tz == wxT("GMT") ) offset = 0; else if ( tz == wxT("AST") ) offset = AST - GMT0; else if ( tz == wxT("ADT") ) offset = ADT - GMT0; else if ( tz == wxT("EST") ) offset = EST - GMT0; else if ( tz == wxT("EDT") ) offset = EDT - GMT0; else if ( tz == wxT("CST") ) offset = CST - GMT0; else if ( tz == wxT("CDT") ) offset = CDT - GMT0; else if ( tz == wxT("MST") ) offset = MST - GMT0; else if ( tz == wxT("MDT") ) offset = MDT - GMT0; else if ( tz == wxT("PST") ) offset = PST - GMT0; else if ( tz == wxT("PDT") ) offset = PDT - GMT0; else return false; p += tz.length(); } // make it minutes offset *= MIN_PER_HOUR; } // the spec was correct, construct the date from the values we found Set(day, mon, year, hour, min, sec); // As always, dealing with the time zone is the most interesting part: we // can't just use MakeFromTimeZone() here because it wouldn't handle the // DST correctly because the TZ specified in the string is DST-invariant // and so we have to manually shift to the UTC first and then convert to // the local TZ. *this -= wxTimeSpan::Minutes(offset); MakeFromUTC(); if ( end ) *end = p; return true; } const char* wxDateTime::ParseRfc822Date(const char* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseRfc822Date(dateStr, &end) ) return NULL; return date + dateStr.IterOffsetInMBStr(end); } const wchar_t* wxDateTime::ParseRfc822Date(const wchar_t* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseRfc822Date(dateStr, &end) ) return NULL; return date + (end - dateStr.begin()); } bool wxDateTime::ParseFormat(const wxString& date, const wxString& format, const wxDateTime& dateDef, wxString::const_iterator *endParse) { wxCHECK_MSG( !format.empty(), false, "format can't be empty" ); wxCHECK_MSG( endParse, false, "end iterator pointer must be specified" ); 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, haveMsec = false; bool hourIsIn12hFormat = false, // or in 24h one? isPM = false; // AM by default bool haveTimeZone = false; // and the value of the items we have (init them to get rid of warnings) wxDateTime_t msec = 0, sec = 0, min = 0, hour = 0; WeekDay wday = Inv_WeekDay; wxDateTime_t yday = 0, mday = 0; wxDateTime::Month mon = Inv_Month; int year = 0; long timeZone = 0; // time zone in seconds as expected in Tm structure wxString::const_iterator input = date.begin(); const wxString::const_iterator end = date.end(); for ( wxString::const_iterator fmt = format.begin(); fmt != format.end(); ++fmt ) { if ( *fmt != wxT('%') ) { if ( wxIsspace(*fmt) ) { // a white space in the format string matches 0 or more white // spaces in the input while ( input != end && wxIsspace(*input) ) { input++; } } else // !space { // any other character (not whitespace, not '%') must be // matched by itself in the input if ( input == end || *input++ != *fmt ) { // no match return false; } } // 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 - '0'; } // the default widths for the various fields if ( !width ) { switch ( (*fmt).GetValue() ) { case wxT('Y'): // year has 4 digits width = 4; break; case wxT('j'): // day of year has 3 digits case wxT('l'): // milliseconds have 3 digits width = 3; break; case wxT('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).GetValue() ) { case wxT('a'): // a weekday name case wxT('A'): { wday = GetWeekDayFromName ( input, end, *fmt == 'a' ? Name_Abbr : Name_Full, DateLang_Local ); if ( wday == Inv_WeekDay ) { // no match return false; } } haveWDay = true; break; case wxT('b'): // a month name case wxT('B'): { mon = GetMonthFromName ( input, end, *fmt == 'b' ? Name_Abbr : Name_Full, DateLang_Local ); if ( mon == Inv_Month ) { // no match return false; } } haveMon = true; break; case wxT('c'): // locale default date and time representation { wxDateTime dt; #if wxUSE_INTL const wxString fmtDateTime = wxLocale::GetInfo(wxLOCALE_DATE_TIME_FMT); if ( !fmtDateTime.empty() ) dt = ParseFormatAt(input, end, fmtDateTime); #endif // wxUSE_INTL if ( !dt.IsValid() ) { // also try the format which corresponds to ctime() // output (i.e. the "C" locale default) dt = ParseFormatAt(input, end, wxS("%a %b %d %H:%M:%S %Y")); } if ( !dt.IsValid() ) { // and finally also the two generic date/time formats dt = ParseFormatAt(input, end, wxS("%x %X"), wxS("%X %x")); } if ( !dt.IsValid() ) return false; const Tm tm = dt.GetTm(); hour = tm.hour; min = tm.min; sec = tm.sec; year = tm.year; mon = tm.mon; mday = tm.mday; haveDay = haveMon = haveYear = haveHour = haveMin = haveSec = true; } break; case wxT('d'): // day of a month (01-31) case 'e': // day of a month (1-31) (GNU extension) if ( !GetNumericToken(width, input, end, &num) || (num > 31) || (num < 1) ) { // no match return false; } // 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 wxT('H'): // hour in 24h format (00-23) if ( !GetNumericToken(width, input, end, &num) || (num > 23) ) { // no match return false; } haveHour = true; hour = (wxDateTime_t)num; break; case wxT('I'): // hour in 12h format (01-12) if ( !GetNumericToken(width, input, end, &num) || !num || (num > 12) ) { // no match return false; } haveHour = true; hourIsIn12hFormat = true; hour = (wxDateTime_t)(num % 12); // 12 should be 0 break; case wxT('j'): // day of the year if ( !GetNumericToken(width, input, end, &num) || !num || (num > 366) ) { // no match return false; } haveYDay = true; yday = (wxDateTime_t)num; break; case wxT('l'): // milliseconds (0-999) if ( !GetNumericToken(width, input, end, &num) ) return false; haveMsec = true; msec = (wxDateTime_t)num; break; case wxT('m'): // month as a number (01-12) if ( !GetNumericToken(width, input, end, &num) || !num || (num > 12) ) { // no match return false; } haveMon = true; mon = (Month)(num - 1); break; case wxT('M'): // minute as a decimal number (00-59) if ( !GetNumericToken(width, input, end, &num) || (num > 59) ) { // no match return false; } haveMin = true; min = (wxDateTime_t)num; break; case wxT('p'): // AM or PM string { wxString am, pm; GetAmPmStrings(&am, &pm); // we can never match %p in locales which don't use AM/PM if ( am.empty() || pm.empty() ) return false; const size_t pos = input - date.begin(); if ( date.compare(pos, pm.length(), pm) == 0 ) { isPM = true; input += pm.length(); } else if ( date.compare(pos, am.length(), am) == 0 ) { input += am.length(); } else // no match { return false; } } break; case wxT('r'): // time as %I:%M:%S %p { wxDateTime dt; if ( !dt.ParseFormat(wxString(input, end), wxS("%I:%M:%S %p"), &input) ) return false; haveHour = haveMin = haveSec = true; const Tm tm = dt.GetTm(); hour = tm.hour; min = tm.min; sec = tm.sec; } break; case wxT('R'): // time as %H:%M { const wxDateTime dt = ParseFormatAt(input, end, wxS("%H:%M")); if ( !dt.IsValid() ) return false; haveHour = haveMin = true; const Tm tm = dt.GetTm(); hour = tm.hour; min = tm.min; } break; case wxT('S'): // second as a decimal number (00-61) if ( !GetNumericToken(width, input, end, &num) || (num > 61) ) { // no match return false; } haveSec = true; sec = (wxDateTime_t)num; break; case wxT('T'): // time as %H:%M:%S { const wxDateTime dt = ParseFormatAt(input, end, wxS("%H:%M:%S")); if ( !dt.IsValid() ) return false; haveHour = haveMin = haveSec = true; const Tm tm = dt.GetTm(); hour = tm.hour; min = tm.min; sec = tm.sec; } break; case wxT('w'): // weekday as a number (0-6), Sunday = 0 if ( !GetNumericToken(width, input, end, &num) || (wday > 6) ) { // no match return false; } haveWDay = true; wday = (WeekDay)num; break; case wxT('x'): // locale default date representation { #if wxUSE_INTL wxString fmtDate = wxLocale::GetInfo(wxLOCALE_SHORT_DATE_FMT), fmtDateAlt = wxLocale::GetInfo(wxLOCALE_LONG_DATE_FMT); #else // !wxUSE_INTL wxString fmtDate, fmtDateAlt; #endif // wxUSE_INTL/!wxUSE_INTL if ( fmtDate.empty() ) { if ( IsWestEuropeanCountry(GetCountry()) || GetCountry() == Russia ) { fmtDate = wxS("%d/%m/%Y"); fmtDateAlt = wxS("%m/%d/%Y"); } else // assume USA { fmtDate = wxS("%m/%d/%Y"); fmtDateAlt = wxS("%d/%m/%Y"); } } wxDateTime dt = ParseFormatAt(input, end, fmtDate, fmtDateAlt); if ( !dt.IsValid() ) { // try with short years too fmtDate.Replace("%Y","%y"); fmtDateAlt.Replace("%Y","%y"); dt = ParseFormatAt(input, end, fmtDate, fmtDateAlt); if ( !dt.IsValid() ) return false; } const Tm tm = dt.GetTm(); haveDay = haveMon = haveYear = true; year = tm.year; mon = tm.mon; mday = tm.mday; } break; case wxT('X'): // locale default time representation { #if wxUSE_INTL wxString fmtTime = wxLocale::GetInfo(wxLOCALE_TIME_FMT), fmtTimeAlt; #else // !wxUSE_INTL wxString fmtTime, fmtTimeAlt; #endif // wxUSE_INTL/!wxUSE_INTL if ( fmtTime.empty() ) { // 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 fmtTime = "%T"; fmtTimeAlt = "%r"; } const wxDateTime dt = ParseFormatAt(input, end, fmtTime, fmtTimeAlt); if ( !dt.IsValid() ) return false; haveHour = haveMin = haveSec = true; const Tm tm = dt.GetTm(); hour = tm.hour; min = tm.min; sec = tm.sec; } break; case wxT('y'): // year without century (00-99) if ( !GetNumericToken(width, input, end, &num) || (num > 99) ) { // no match return false; } 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 wxT('Y'): // year with century if ( !GetNumericToken(width, input, end, &num) ) { // no match return false; } haveYear = true; year = (wxDateTime_t)num; break; case wxT('z'): { // check that we have something here at all if ( input == end ) return false; // and then check that it's either plus or minus sign bool minusFound; if ( *input == wxT('-') ) minusFound = true; else if ( *input == wxT('+') ) minusFound = false; else return false; // no match // here should follow 4 digits HHMM ++input; unsigned long tzHourMin; if ( !GetNumericToken(4, input, end, &tzHourMin) ) return false; // no match const unsigned hours = tzHourMin / 100; const unsigned minutes = tzHourMin % 100; if ( hours > 12 || minutes > 59 ) return false; // bad format timeZone = 3600*hours + 60*minutes; if ( minusFound ) timeZone = -timeZone; haveTimeZone = true; } break; case wxT('Z'): // timezone name // FIXME: currently we just ignore everything that looks like a // time zone here GetAlphaToken(input, end); break; case wxT('%'): // a percent sign if ( input == end || *input++ != wxT('%') ) { // no match return false; } break; case 0: // the end of string wxFAIL_MSG(wxT("unexpected format end")); // fall through default: // not a known format spec return false; } } // 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 ( haveMon ) { tm.mon = mon; } 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 ( haveDay ) { if ( mday > GetNumberOfDays(tm.mon, tm.year) ) return false; tm.mday = mday; } else if ( haveYDay ) { if ( yday > GetNumberOfDays(tm.year) ) return false; 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; } if ( haveMsec ) tm.msec = msec; Set(tm); // If a time zone was specified and it is not the local time zone, we need // to shift the time accordingly. // // Note that avoiding the call to MakeFromTimeZone is necessary to avoid // DST problems. if ( haveTimeZone && timeZone != -wxGetTimeZone() ) MakeFromTimezone(timeZone); // finally check that the week day is consistent -- if we had it if ( haveWDay && GetWeekDay() != wday ) return false; *endParse = input; return true; } const char* wxDateTime::ParseFormat(const char* date, const wxString& format, const wxDateTime& dateDef) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseFormat(dateStr, format, dateDef, &end) ) return NULL; return date + dateStr.IterOffsetInMBStr(end); } const wchar_t* wxDateTime::ParseFormat(const wchar_t* date, const wxString& format, const wxDateTime& dateDef) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseFormat(dateStr, format, dateDef, &end) ) return NULL; return date + (end - dateStr.begin()); } bool wxDateTime::ParseDateTime(const wxString& date, wxString::const_iterator *end) { wxCHECK_MSG( end, false, "end iterator pointer must be specified" ); wxDateTime dtDate, dtTime; wxString::const_iterator endTime, endDate, endBoth; // If we got a date in the beginning, see if there is a time specified // after the date if ( dtDate.ParseDate(date, &endDate) ) { // Skip spaces, as the ParseTime() function fails on spaces while ( endDate != date.end() && wxIsspace(*endDate) ) ++endDate; const wxString timestr(endDate, date.end()); if ( !dtTime.ParseTime(timestr, &endTime) ) return false; endBoth = endDate + (endTime - timestr.begin()); } else // no date in the beginning { // check if we have a time followed by a date if ( !dtTime.ParseTime(date, &endTime) ) return false; while ( endTime != date.end() && wxIsspace(*endTime) ) ++endTime; const wxString datestr(endTime, date.end()); if ( !dtDate.ParseDate(datestr, &endDate) ) return false; endBoth = endTime + (endDate - datestr.begin()); } Set(dtDate.GetDay(), dtDate.GetMonth(), dtDate.GetYear(), dtTime.GetHour(), dtTime.GetMinute(), dtTime.GetSecond(), dtTime.GetMillisecond()); *end = endBoth; return true; } const char* wxDateTime::ParseDateTime(const char* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseDateTime(dateStr, &end) ) return NULL; return date + dateStr.IterOffsetInMBStr(end); } const wchar_t* wxDateTime::ParseDateTime(const wchar_t* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseDateTime(dateStr, &end) ) return NULL; return date + (end - dateStr.begin()); } bool wxDateTime::ParseDate(const wxString& date, wxString::const_iterator *end) { wxCHECK_MSG( end, false, "end iterator pointer must be specified" ); // 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) const wxString::const_iterator pBegin = date.begin(); const wxString::const_iterator pEnd = date.end(); wxString::const_iterator p = pBegin; while ( p != pEnd && wxIsspace(*p) ) p++; // some special cases static struct { const char *str; int dayDiffFromToday; } literalDates[] = { { wxTRANSLATE("today"), 0 }, { wxTRANSLATE("yesterday"), -1 }, { wxTRANSLATE("tomorrow"), 1 }, }; const size_t lenRest = pEnd - p; for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ ) { const wxString dateStr = wxGetTranslation(literalDates[n].str); size_t len = dateStr.length(); if ( len > lenRest ) continue; const wxString::const_iterator pEndStr = p + len; if ( wxString(p, pEndStr).CmpNoCase(dateStr) == 0 ) { // nothing can follow this, so stop here p = pEndStr; int dayDiffFromToday = literalDates[n].dayDiffFromToday; *this = Today(); if ( dayDiffFromToday ) { *this += wxDateSpan::Days(dayDiffFromToday); } *end = pEndStr; return true; } } // 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? bool monWasNumeric = false; // was month specified as a number? // 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 while ( p != pEnd ) { // skip white space and date delimiters if ( wxStrchr(".,/-\t\r\n ", *p) ) { ++p; continue; } // modify copy of the iterator as we're not sure if the next token is // still part of the date at all wxString::const_iterator pCopy = p; // we can have either alphabetic or numeric token, start by testing if // it's the latter unsigned long val; if ( GetNumericToken(10 /* max length */, pCopy, pEnd, &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 { // use a leap year if we don't have the year yet to allow // dates like 2/29/1976 which would be rejected otherwise wxDateTime_t max_days = (wxDateTime_t)( haveMon ? GetNumberOfDays(mon, haveYear ? year : 1976) : 31 ); // can it be day? if ( (val == 0) || (val > (unsigned long)max_days) ) { // 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; monWasNumeric = true; mon = (Month)(val - 1); } } else // not a number { // be careful not to overwrite the current mon value Month mon2 = GetMonthFromName ( pCopy, pEnd, Name_Full | Name_Abbr, DateLang_Local | DateLang_English ); if ( mon2 != Inv_Month ) { // it's a month if ( haveMon ) { // but we already have a month - maybe we guessed wrong // when we had interpreted that numeric value as a month // and it was the day number instead? if ( haveDay || !monWasNumeric ) break; // assume we did and change our mind: reinterpret the month // value as a day (notice that there is no need to check // that it is valid as month values are always < 12, but // the days are counted from 1 unlike the months) day = (wxDateTime_t)(mon + 1); haveDay = true; } mon = mon2; haveMon = true; } else // not a valid month name { WeekDay wday2 = GetWeekDayFromName ( pCopy, pEnd, Name_Full | Name_Abbr, DateLang_Local | DateLang_English ); if ( wday2 != Inv_WeekDay ) { // a week day if ( haveWDay ) break; wday = wday2; haveWDay = true; } else // not a valid weekday name { // try the ordinals static const char *const 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++ ) { const wxString ord = wxGetTranslation(ordinals[n]); const size_t len = ord.length(); if ( date.compare(p - pBegin, len, ord) == 0 ) { p += len; 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); } } } // advance iterator past a successfully parsed token p = pCopy; } // 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 ) return false; 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 false; } 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)GetNumberOfDays(mon, Inv_Year)) ) { day = (wxDateTime_t)year; haveMon = true; haveYear = false; } //else: no, can't exchange, leave haveMon == false } } if ( !haveMon ) return false; } if ( !haveMon ) { mon = GetCurrentMonth(); } if ( !haveYear ) { year = GetCurrentYear(); } if ( haveDay ) { // normally we check the day above but the check is optimistic in case // we find the day before its month/year so we have to redo it now if ( day > GetNumberOfDays(mon, year) ) return false; Set(day, mon, year); if ( haveWDay ) { // check that it is really the same if ( GetWeekDay() != wday ) return false; } } else // haveWDay { *this = Today(); SetToWeekDayInSameWeek(wday); } *end = p; return true; } const char* wxDateTime::ParseDate(const char* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseDate(dateStr, &end) ) return NULL; return date + dateStr.IterOffsetInMBStr(end); } const wchar_t* wxDateTime::ParseDate(const wchar_t* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseDate(dateStr, &end) ) return NULL; return date + (end - dateStr.begin()); } bool wxDateTime::ParseTime(const wxString& time, wxString::const_iterator *end) { wxCHECK_MSG( end, false, "end iterator pointer must be specified" ); // first try some extra things static const struct { const char *name; wxDateTime_t hour; } stdTimes[] = { { wxTRANSLATE("noon"), 12 }, { wxTRANSLATE("midnight"), 00 }, // anything else? }; for ( size_t n = 0; n < WXSIZEOF(stdTimes); n++ ) { const wxString timeString = wxGetTranslation(stdTimes[n].name); if ( timeString.CmpNoCase(wxString(time, timeString.length())) == 0 ) { // casts required by DigitalMars Set(stdTimes[n].hour, wxDateTime_t(0), wxDateTime_t(0)); if ( end ) *end = time.begin() + timeString.length(); return true; } } // try all time formats we may think about in the order from longest to // shortest static const char *const timeFormats[] = { "%I:%M:%S %p", // 12hour with AM/PM "%H:%M:%S", // could be the same or 24 hour one so try it too "%I:%M %p", // 12hour with AM/PM but without seconds "%H:%M", // and a possibly 24 hour version without seconds "%I %p", // just hour with AM/AM "%H", // just hour in 24 hour version "%X", // possibly something from above or maybe something // completely different -- try it last // TODO: parse timezones }; for ( size_t nFmt = 0; nFmt < WXSIZEOF(timeFormats); nFmt++ ) { if ( ParseFormat(time, timeFormats[nFmt], end) ) return true; } return false; } const char* wxDateTime::ParseTime(const char* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseTime(dateStr, &end) ) return NULL; return date + dateStr.IterOffsetInMBStr(end); } const wchar_t* wxDateTime::ParseTime(const wchar_t* date) { wxString::const_iterator end; wxString dateStr(date); if ( !ParseTime(dateStr, &end) ) return NULL; return date + (end - dateStr.begin()); } // ---------------------------------------------------------------------------- // Workdays and holidays support // ---------------------------------------------------------------------------- bool wxDateTime::IsWorkDay(Country WXUNUSED(country)) const { return !wxDateTimeHolidayAuthority::IsHoliday(*this); } // ============================================================================ // wxDateSpan // ============================================================================ wxDateSpan WXDLLIMPEXP_BASE operator*(int n, const wxDateSpan& ds) { wxDateSpan ds1(ds); return ds1.Multiply(n); } // ============================================================================ // wxTimeSpan // ============================================================================ wxTimeSpan WXDLLIMPEXP_BASE operator*(int n, const wxTimeSpan& ts) { return wxTimeSpan(ts).Multiply(n); } // 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 wxString& format) const { // we deal with only positive time spans here and just add the sign in // front for the negative ones if ( IsNegative() ) { wxString str(Negate().Format(format)); return "-" + str; } wxCHECK_MSG( !format.empty(), wxEmptyString, wxT("NULL format in wxTimeSpan::Format") ); wxString str; str.Alloc(format.length()); // 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 ( wxString::const_iterator pch = format.begin(); pch != format.end(); ++pch ) { wxChar ch = *pch; if ( ch == wxT('%') ) { // the start of the format specification of the printf() below wxString fmtPrefix(wxT('%')); // the number long n; // the number of digits for the format string, 0 if unused unsigned digits = 0; ch = *++pch; // get the format spec char switch ( ch ) { default: wxFAIL_MSG( wxT("invalid format character") ); // fall through case wxT('%'): str += ch; // skip the part below switch continue; case wxT('D'): n = GetDays(); if ( partBiggest < Part_Day ) { n %= DAYS_PER_WEEK; } else { partBiggest = Part_Day; } break; case wxT('E'): partBiggest = Part_Week; n = GetWeeks(); break; case wxT('H'): n = GetHours(); if ( partBiggest < Part_Hour ) { n %= HOURS_PER_DAY; } else { partBiggest = Part_Hour; } digits = 2; break; case wxT('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 digits = 3; break; case wxT('M'): n = GetMinutes(); if ( partBiggest < Part_Min ) { n %= MIN_PER_HOUR; } else { partBiggest = Part_Min; } digits = 2; break; case wxT('S'): n = GetSeconds().ToLong(); if ( partBiggest < Part_Sec ) { n %= SEC_PER_MIN; } else { partBiggest = Part_Sec; } digits = 2; break; } if ( digits ) { fmtPrefix << wxT("0") << digits; } str += wxString::Format(fmtPrefix + wxT("ld"), n); } else { // normal character, just copy str += ch; } } return str; } #endif // wxUSE_DATETIME