// implementation of wxDateTime
// ============================================================================
+// ----------------------------------------------------------------------------
+// helpers shared between datetime.cpp and datetimefmt.cpp
+// ----------------------------------------------------------------------------
+
+extern void InitTm(struct tm& tm);
+
+extern int GetTimeZone();
+
+extern wxString CallStrftime(const wxString& format, const tm* tm);
+
// ----------------------------------------------------------------------------
// constants (see also datetime.cpp)
// ----------------------------------------------------------------------------
// parsing helpers
// ----------------------------------------------------------------------------
+namespace
+{
+
#ifdef HAVE_STRPTIME
#if wxUSE_UNIX && !defined(HAVE_STRPTIME_DECL)
extern "C" char *strptime(const char *, const char *, struct tm *);
#endif
-// Unicode-friendly strptime() wrapper
-static const wxStringCharType *
-CallStrptime(const wxStringCharType *input, const char *fmt, tm *tm)
+// strptime() wrapper: call strptime() for the string starting at the given
+// iterator and fill output tm struct with the results and modify input to
+// point to the end of the string consumed by strptime() if successful,
+// otherwise return false and don't modify anything
+bool
+CallStrptime(const wxString& str,
+ wxString::const_iterator& p,
+ const char *fmt,
+ tm *tm)
{
- // the problem here is that strptime() returns pointer into the string we
- // passed to it while we're really interested in the pointer into the
- // original, Unicode, string so we try to transform the pointer back
-#if wxUSE_UNICODE_WCHAR
- wxCharBuffer inputMB(wxConvertWX2MB(input));
-#else // ASCII
- const char * const inputMB = input;
-#endif // Unicode/Ascii
-
- const char *result = strptime(inputMB, fmt, tm);
- if ( !result )
- return NULL;
-
-#if wxUSE_UNICODE_WCHAR
- // FIXME: this is wrong in presence of surrogates &c
- return input + (result - inputMB.data());
-#else // ASCII
- return result;
-#endif // Unicode/Ascii
+ // convert from iterator to char pointer: this is simple as wxCStrData
+ // already supports this
+ const char * const start = str.c_str() + (p - str.begin());
+
+ const char * const end = strptime(start, fmt, tm);
+ if ( !end )
+ return false;
+
+ // convert back from char pointer to iterator: unfortunately we have no way
+ // to do it efficiently currently so create a temporary string just to
+ // compute the number of characters between start and end
+ p += wxString(start, end - start).length();
+
+ return true;
}
#endif // HAVE_STRPTIME
+enum
+{
+ DateLang_English = 1,
+ DateLang_Local = 2
+};
+
// return the month if the string is a month name or Inv_Month otherwise
-static wxDateTime::Month GetMonthFromName(const wxString& name, int flags)
+//
+// 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(const wxString& name, int flags, int lang)
{
wxDateTime::Month mon;
for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) )
// and not versions
if ( flags & wxDateTime::Name_Full )
{
- if ( name.CmpNoCase(wxDateTime::
- GetMonthName(mon, wxDateTime::Name_Full)) == 0 )
+ if ( lang & DateLang_English )
{
- break;
+ 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 ( name.CmpNoCase(wxDateTime::
- GetMonthName(mon, wxDateTime::Name_Abbr)) == 0 )
+ if ( lang & DateLang_English )
{
- break;
+ if ( name.CmpNoCase(wxDateTime::GetEnglishMonthName(mon,
+ wxDateTime::Name_Abbr)) == 0 )
+ break;
+ }
+
+ if ( lang & DateLang_Local )
+ {
+ if ( name.CmpNoCase(wxDateTime::GetMonthName(mon,
+ wxDateTime::Name_Abbr)) == 0 )
+ break;
}
}
}
}
// return the weekday if the string is a weekday name or Inv_WeekDay otherwise
-static wxDateTime::WeekDay GetWeekDayFromName(const wxString& name, int flags)
+//
+// flags and lang parameters have the same meaning as for GetMonthFromName()
+// above
+wxDateTime::WeekDay
+GetWeekDayFromName(const wxString& name, int flags, int lang)
{
wxDateTime::WeekDay wd;
for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
{
- // case-insensitive comparison either one of or with both abbreviated
- // and not versions
if ( flags & wxDateTime::Name_Full )
{
- if ( name.CmpNoCase(wxDateTime::
- GetWeekDayName(wd, wxDateTime::Name_Full)) == 0 )
+ if ( lang & DateLang_English )
{
- break;
+ 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 ( name.CmpNoCase(wxDateTime::
- GetWeekDayName(wd, wxDateTime::Name_Abbr)) == 0 )
+ if ( lang & DateLang_English )
{
- break;
+ 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;
}
}
}
return wd;
}
-/* static */
-struct tm *wxDateTime::GetTmNow(struct tm *tmstruct)
-{
- time_t t = GetTimeNow();
- return wxLocaltime_r(&t, tmstruct);
-}
-
// scans all digits (but no more than len) and returns the resulting number
-static bool GetNumericToken(size_t len,
- const wxStringCharType*& p,
- unsigned long *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 ( wxIsdigit(*p) )
+ while ( p != end && wxIsdigit(*p) )
{
s += *p++;
}
// scans all alphabetic characters and returns the resulting string
-static wxString GetAlphaToken(const wxStringCharType*& p)
+wxString
+GetAlphaToken(wxString::const_iterator& p,
+ const wxString::const_iterator& end)
{
wxString s;
- while ( wxIsalpha(*p) )
+ while ( p != end && wxIsalpha(*p) )
{
s += *p++;
}
return s;
}
+// 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& fmtAlt2 = wxString())
+{
+ const wxString str(p, end);
+ wxString::const_iterator endParse;
+ wxDateTime dt;
+ if ( dt.ParseFormat(str, fmt, &endParse) ||
+ (!fmtAlt.empty() && dt.ParseFormat(str, fmtAlt, &endParse)) ||
+ (!fmtAlt2.empty() && dt.ParseFormat(str, fmtAlt2, &endParse)) )
+ {
+ p += endParse - str.begin();
+ }
+ //else: all formats failed
+
+ return dt;
+}
+
+} // anonymous namespace
+
// ----------------------------------------------------------------------------
// wxDateTime to/from text representations
// ----------------------------------------------------------------------------
//
// this function is "strict" by design - it must reject anything except true
// RFC822 time specs.
-//
-// TODO a great candidate for using reg exps
-const char *
+bool
wxDateTime::ParseRfc822Date(const wxString& date, wxString::const_iterator *end)
{
- // TODO: rewrite using iterators instead of wxChar pointers
- const wxStringCharType *p = date.wx_str();
- const wxStringCharType *comma = wxStrchr(p, wxS(','));
- if ( comma )
- {
- // the part before comma is the weekday
+ wxString::const_iterator p = date.begin();
- // skip it for now - we don't use but might check that it really
- // corresponds to the specfied date
- p = comma + 1;
+ // 1. week day
+ static const int WDAY_LEN = 3;
+ const wxString::const_iterator endWday = p + WDAY_LEN;
+ const wxString wday(p, endWday);
+ if ( GetWeekDayFromName(wday, Name_Abbr, DateLang_English) == Inv_WeekDay )
+ return false;
+ //else: ignore week day for now, we could also check that it really
+ // corresponds to the specified date
- if ( *p != _T(' ') )
- {
- wxLogDebug(_T("no space after weekday in RFC822 time spec"));
-
- return NULL;
- }
+ p = endWday;
- p++; // skip space
- }
+ // 2. separating comma
+ if ( *p++ != ',' || *p++ != ' ' )
+ return false;
- // the following 1 or 2 digits are the day number
+ // 3. day number
if ( !wxIsdigit(*p) )
- {
- wxLogDebug(_T("day number expected in RFC822 time spec, none found"));
-
- return NULL;
- }
+ return false;
- wxDateTime_t day = (wxDateTime_t)(*p++ - _T('0'));
+ wxDateTime_t day = (wxDateTime_t)(*p++ - '0');
if ( wxIsdigit(*p) )
{
day *= 10;
- day = (wxDateTime_t)(day + (*p++ - _T('0')));
- }
-
- if ( *p++ != _T(' ') )
- {
- return NULL;
+ day = (wxDateTime_t)(day + (*p++ - '0'));
}
- // 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());
+ if ( *p++ != ' ' )
+ return false;
- return NULL;
- }
+ // 4. month name
+ static const int MONTH_LEN = 3;
+ const wxString::const_iterator endMonth = p + MONTH_LEN;
+ const wxString monName(p, endMonth);
+ Month mon = GetMonthFromName(monName, Name_Abbr, DateLang_English);
+ if ( mon == Inv_Month )
+ return false;
- p += 3;
+ p = endMonth;
- if ( *p++ != _T(' ') )
- {
- return NULL;
- }
+ if ( *p++ != ' ' )
+ return false;
- // next is the year
+ // 5. year
if ( !wxIsdigit(*p) )
- {
- // no year?
- return NULL;
- }
-
- int year = *p++ - _T('0');
+ return false;
- if ( !wxIsdigit(*p) )
- {
- // should have at least 2 digits in the year
- return NULL;
- }
+ int year = *p++ - '0';
+ if ( !wxIsdigit(*p) ) // should have at least 2 digits in the year
+ return false;
year *= 10;
- year += *p++ - _T('0');
+ 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++ - _T('0');
+ year += *p++ - '0';
if ( !wxIsdigit(*p) )
{
// no 3 digit years please
- return NULL;
+ return false;
}
year *= 10;
- year += *p++ - _T('0');
+ year += *p++ - '0';
}
- if ( *p++ != _T(' ') )
- {
- return NULL;
- }
+ if ( *p++ != ' ' )
+ return false;
- // time is in the format hh:mm:ss and seconds are optional
+ // 6. time in hh:mm:ss format with seconds being optional
if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
+ return false;
- wxDateTime_t hour = (wxDateTime_t)(*p++ - _T('0'));
+ wxDateTime_t hour = (wxDateTime_t)(*p++ - '0');
if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
+ return false;
hour *= 10;
- hour = (wxDateTime_t)(hour + (*p++ - _T('0')));
+ hour = (wxDateTime_t)(hour + (*p++ - '0'));
- if ( *p++ != _T(':') )
- {
- return NULL;
- }
+ if ( *p++ != ':' )
+ return false;
if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
+ return false;
- wxDateTime_t min = (wxDateTime_t)(*p++ - _T('0'));
+ wxDateTime_t min = (wxDateTime_t)(*p++ - '0');
if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
+ return false;
min *= 10;
- min = (wxDateTime_t)(min + *p++ - _T('0'));
+ min += (wxDateTime_t)(*p++ - '0');
wxDateTime_t sec = 0;
- if ( *p == _T(':') )
+ if ( *p == ':' )
{
p++;
if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
+ return false;
- sec = (wxDateTime_t)(*p++ - _T('0'));
+ sec = (wxDateTime_t)(*p++ - '0');
if ( !wxIsdigit(*p) )
- {
- return NULL;
- }
+ return false;
sec *= 10;
- sec = (wxDateTime_t)(sec + *p++ - _T('0'));
+ sec += (wxDateTime_t)(*p++ - '0');
}
- if ( *p++ != _T(' ') )
- {
- return NULL;
- }
+ if ( *p++ != ' ' )
+ return false;
- // and now the interesting part: the timezone
+ // 7. now the interesting part: the timezone
int offset wxDUMMY_INITIALIZE(0);
- if ( *p == _T('-') || *p == _T('+') )
+ if ( *p == '-' || *p == '+' )
{
// the explicit offset given: it has the form of hhmm
- bool plus = *p++ == _T('+');
+ bool plus = *p++ == '+';
if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) )
- {
- return NULL;
- }
+ return false;
+
// hours
- offset = MIN_PER_HOUR*(10*(*p - _T('0')) + (*(p + 1) - _T('0')));
+ offset = MIN_PER_HOUR*(10*(*p - '0') + (*(p + 1) - '0'));
p += 2;
if ( !wxIsdigit(*p) || !wxIsdigit(*(p + 1)) )
- {
- return NULL;
- }
+ return false;
// minutes
- offset += 10*(*p - _T('0')) + (*(p + 1) - _T('0'));
+ offset += 10*(*p - '0') + (*(p + 1) - '0');
if ( !plus )
- {
offset = -offset;
- }
p += 2;
}
- else
+ else // not numeric
{
// the symbolic timezone given: may be either military timezone or one
// of standard abbreviations
};
if ( *p < _T('A') || *p > _T('Z') || *p == _T('J') )
- {
- wxLogDebug(_T("Invalid militaty timezone '%c'"), *p);
+ return false;
- return NULL;
- }
-
- offset = offsets[*p++ - _T('A')];
+ offset = offsets[*p++ - 'A'];
}
else
{
// abbreviation
- wxString tz = p;
+ const wxString tz(p, date.end());
if ( tz == _T("UT") || tz == _T("UTC") || tz == _T("GMT") )
offset = 0;
else if ( tz == _T("AST") )
else if ( tz == _T("PDT") )
offset = PDT - GMT0;
else
- {
- wxLogDebug(_T("Unknown RFC 822 timezone '%s'"), p);
-
- return NULL;
- }
+ return false;
p += tz.length();
}
offset *= MIN_PER_HOUR;
}
+
// the spec was correct, construct the date from the values we found
Set(day, mon, year, hour, min, sec);
MakeFromTimezone(TimeZone::Make(offset*SEC_PER_MIN));
- const size_t endpos = p - date.wx_str();
if ( end )
- *end = date.begin() + endpos;
+ *end = p;
- return date.c_str() + endpos;
+ return true;
}
#ifdef __WINDOWS__
#endif // __WINDOWS__
-const char *
+bool
wxDateTime::ParseFormat(const wxString& date,
const wxString& format,
const wxDateTime& dateDef,
- wxString::const_iterator *end)
+ wxString::const_iterator *endParse)
{
- wxCHECK_MSG( !format.empty(), NULL, "format can't be empty" );
+ 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;
wxDateTime::Month mon = Inv_Month;
int year = 0;
- const wxStringCharType *input = date.wx_str();
+ 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 != _T('%') )
if ( *input++ != *fmt )
{
// no match
- return NULL;
+ return false;
}
}
while ( wxIsdigit(*++fmt) )
{
width *= 10;
- width += *fmt - _T('0');
+ width += *fmt - '0';
}
// the default widths for the various fields
case _T('a'): // a weekday name
case _T('A'):
{
- int flag = *fmt == _T('a') ? Name_Abbr : Name_Full;
- wday = GetWeekDayFromName(GetAlphaToken(input), flag);
+ wday = GetWeekDayFromName
+ (
+ GetAlphaToken(input, end),
+ *fmt == 'a' ? Name_Abbr : Name_Full,
+ DateLang_Local
+ );
if ( wday == Inv_WeekDay )
{
// no match
- return NULL;
+ return false;
}
}
haveWDay = true;
case _T('b'): // a month name
case _T('B'):
{
- int flag = *fmt == _T('b') ? Name_Abbr : Name_Full;
- mon = GetMonthFromName(GetAlphaToken(input), flag);
+ mon = GetMonthFromName
+ (
+ GetAlphaToken(input, end),
+ *fmt == 'b' ? Name_Abbr : Name_Full,
+ DateLang_Local
+ );
if ( mon == Inv_Month )
{
// no match
- return NULL;
+ return false;
}
}
haveMon = true;
case _T('c'): // locale default date and time representation
{
- wxDateTime dt;
-
- const wxString inc(input);
-
- // NOTE: %c is locale-dependent; try strptime
#ifdef HAVE_STRPTIME
struct tm tm;
// 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
- const wxStringCharType *
- result = CallStrptime(input, "%c", &tm);
- if ( result )
+ if ( CallStrptime(date, input, "%c", &tm) )
{
- haveDay = haveMon = haveYear =
- haveHour = haveMin = haveSec = true;
-
hour = tm.tm_hour;
min = tm.tm_min;
sec = tm.tm_sec;
year = 1900 + tm.tm_year;
mon = (Month)tm.tm_mon;
mday = tm.tm_mday;
-
- input = result; // proceed where strptime() ended
}
- else
- {
- // strptime() failed; try generic heuristic code
+ else // strptime() failed; try generic heuristic code
#endif // HAVE_STRPTIME
+ {
- // try the format which corresponds to ctime() output first
- wxString::const_iterator endc;
- if ( !dt.ParseFormat(inc, wxS("%a %b %d %H:%M:%S %Y"), &endc) &&
- !dt.ParseFormat(inc, wxS("%x %X"), &endc) &&
- !dt.ParseFormat(inc, wxS("%X %x"), &endc) )
- {
- // we've tried everything and still no match
- return NULL;
- }
+ // try the format which corresponds to ctime() output
+ // first, then the generic date/time formats
+ const wxDateTime dt = ParseFormatAt
+ (
+ input,
+ end,
+ wxS("%a %b %d %H:%M:%S %Y"),
+ wxS("%x %X"),
+ wxS("%X %x")
+ );
+ if ( !dt.IsValid() )
+ return false;
Tm tm = dt.GetTm();
-
- haveDay = haveMon = haveYear =
- haveHour = haveMin = haveSec = true;
hour = tm.hour;
min = tm.min;
year = tm.year;
mon = tm.mon;
mday = tm.mday;
-
- input += endc - inc.begin();
-#ifdef HAVE_STRPTIME
}
-#endif // HAVE_STRPTIME
+
+ haveDay = haveMon = haveYear =
+ haveHour = haveMin = haveSec = true;
}
break;
case _T('d'): // day of a month (01-31)
- if ( !GetNumericToken(width, input, &num) ||
+ if ( !GetNumericToken(width, input, end, &num) ||
(num > 31) || (num < 1) )
{
// no match
- return NULL;
+ return false;
}
// we can't check whether the day range is correct yet, will
break;
case _T('H'): // hour in 24h format (00-23)
- if ( !GetNumericToken(width, input, &num) || (num > 23) )
+ if ( !GetNumericToken(width, input, end, &num) || (num > 23) )
{
// no match
- return NULL;
+ return false;
}
haveHour = true;
break;
case _T('I'): // hour in 12h format (01-12)
- if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ !num || (num > 12) )
{
// no match
- return NULL;
+ return false;
}
haveHour = true;
break;
case _T('j'): // day of the year
- if ( !GetNumericToken(width, input, &num) || !num || (num > 366) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ !num || (num > 366) )
{
// no match
- return NULL;
+ return false;
}
haveYDay = true;
break;
case _T('l'): // milliseconds (0-999)
- if ( !GetNumericToken(width, input, &num) )
- return NULL;
+ if ( !GetNumericToken(width, input, end, &num) )
+ return false;
haveMsec = true;
msec = (wxDateTime_t)num;
break;
case _T('m'): // month as a number (01-12)
- if ( !GetNumericToken(width, input, &num) || !num || (num > 12) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ !num || (num > 12) )
{
// no match
- return NULL;
+ return false;
}
haveMon = true;
break;
case _T('M'): // minute as a decimal number (00-59)
- if ( !GetNumericToken(width, input, &num) || (num > 59) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ (num > 59) )
{
// no match
- return NULL;
+ return false;
}
haveMin = true;
case _T('p'): // AM or PM string
{
- wxString am, pm, token = GetAlphaToken(input);
+ wxString am, pm, token = GetAlphaToken(input, end);
+
+ // some locales have empty AM/PM tokens and thus when formatting
+ // dates with the %p specifier nothing is generated; when trying to
+ // parse them back, we get an empty token here... but that's not
+ // an error.
+ if (token.empty())
+ break;
GetAmPmStrings(&am, &pm);
if (am.empty() && pm.empty())
- return NULL; // no am/pm strings defined
+ return false; // no am/pm strings defined
if ( token.CmpNoCase(pm) == 0 )
{
isPM = true;
else if ( token.CmpNoCase(am) != 0 )
{
// no match
- return NULL;
+ return false;
}
}
break;
case _T('r'): // time as %I:%M:%S %p
{
wxDateTime dt;
- input = dt.ParseFormat(input, wxS("%I:%M:%S %p"));
- if ( !input )
- {
- // no match
- return NULL;
- }
+ if ( !dt.ParseFormat(wxString(input, end),
+ wxS("%I:%M:%S %p"), &input) )
+ return false;
haveHour = haveMin = haveSec = true;
case _T('R'): // time as %H:%M
{
- wxDateTime dt;
- input = dt.ParseFormat(input, wxS("%H:%M"));
- if ( !input )
- {
- // no match
- return NULL;
- }
+ const wxDateTime
+ dt = ParseFormatAt(input, end, wxS("%H:%M"));
+ if ( !dt.IsValid() )
+ return false;
- haveHour = haveMin = true;
+ haveHour =
+ haveMin = true;
Tm tm = dt.GetTm();
hour = tm.hour;
break;
case _T('S'): // second as a decimal number (00-61)
- if ( !GetNumericToken(width, input, &num) || (num > 61) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ (num > 61) )
{
// no match
- return NULL;
+ return false;
}
haveSec = true;
case _T('T'): // time as %H:%M:%S
{
- wxDateTime dt;
- input = dt.ParseFormat(input, _T("%H:%M:%S"));
- if ( !input )
- {
- // no match
- return NULL;
- }
+ const wxDateTime
+ dt = ParseFormatAt(input, end, wxS("%H:%M:%S"));
+ if ( !dt.IsValid() )
+ return false;
- haveHour = haveMin = haveSec = true;
+ haveHour =
+ haveMin =
+ haveSec = true;
Tm tm = dt.GetTm();
hour = tm.hour;
break;
case _T('w'): // weekday as a number (0-6), Sunday = 0
- if ( !GetNumericToken(width, input, &num) || (wday > 6) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ (wday > 6) )
{
// no match
- return NULL;
+ return false;
}
haveWDay = true;
{
struct tm tm;
- const wxStringCharType *
- result = CallStrptime(input, "%x", &tm);
- if ( result )
+ if ( CallStrptime(date, input, "%x", &tm) )
{
- input = result;
-
haveDay = haveMon = haveYear = true;
year = 1900 + tm.tm_year;
#endif // HAVE_STRPTIME
{
- wxDateTime dt;
wxString fmtDate,
fmtDateAlt;
}
}
- const wxString indate(input);
- wxString::const_iterator endDate;
- if ( !dt.ParseFormat(indate, fmtDate, &endDate) )
- {
- // try another one if we have it
- if ( fmtDateAlt.empty() ||
- !dt.ParseFormat(indate, fmtDateAlt, &endDate) )
- {
- return NULL;
- }
- }
+ const wxDateTime
+ dt = ParseFormatAt(input, end,
+ fmtDate, fmtDateAlt);
+ if ( !dt.IsValid() )
+ return false;
Tm tm = dt.GetTm();
year = tm.year;
mon = tm.mon;
mday = tm.mday;
-
- input += endDate - indate.begin();
}
break;
{
// use strptime() to do it for us (FIXME !Unicode friendly)
struct tm tm;
- input = CallStrptime(input, "%X", &tm);
- if ( !input )
- {
- return NULL;
- }
+ if ( !CallStrptime(date, input, "%X", &tm) )
+ return false;
haveHour = haveMin = haveSec = true;
// 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 wxStringCharType *
- result = dt.ParseFormat(input, wxS("%T"));
- if ( !result )
- {
- result = dt.ParseFormat(input, wxS("%r"));
- }
-
- if ( !result )
- {
- // no match
- return NULL;
- }
+ const wxDateTime
+ dt = ParseFormatAt(input, end, "%T", "%r");
+ if ( !dt.IsValid() )
+ return false;
haveHour =
haveMin =
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) )
+ if ( !GetNumericToken(width, input, end, &num) ||
+ (num > 99) )
{
// no match
- return NULL;
+ return false;
}
haveYear = true;
break;
case _T('Y'): // year with century
- if ( !GetNumericToken(width, input, &num) )
+ if ( !GetNumericToken(width, input, end, &num) )
{
// no match
- return NULL;
+ return false;
}
haveYear = true;
if ( *input++ != _T('%') )
{
// no match
- return NULL;
+ return false;
}
break;
// fall through
default: // not a known format spec
- return NULL;
+ return false;
}
}
if ( haveDay )
{
if ( mday > GetNumberOfDays(tm.mon, tm.year) )
- {
- wxLogDebug(_T("bad month day in wxDateTime::ParseFormat"));
-
- return NULL;
- }
+ return false;
tm.mday = mday;
}
else if ( haveYDay )
{
if ( yday > GetNumberOfDays(tm.year) )
- {
- wxLogDebug(_T("bad year day in wxDateTime::ParseFormat"));
-
- return NULL;
- }
+ return false;
Tm tm2 = wxDateTime(1, Jan, tm.year).SetToYearDay(yday).GetTm();
// 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 false;
- const size_t endpos = input - date.wx_str();
- if ( end )
- *end = date.begin() + endpos;
+ *endParse = input;
- return date.c_str() + endpos;
+ return true;
}
-const char *
+bool
wxDateTime::ParseDateTime(const wxString& date, wxString::const_iterator *end)
{
+ wxCHECK_MSG( end, false, "end iterator pointer must be specified" );
+
// Set to current day and hour, so strings like '14:00' becomes today at
// 14, not some other random date
wxDateTime dtDate = wxDateTime::Today();
const wxString timestr(endDate, date.end());
if ( !dtTime.ParseTime(timestr, &endTime) )
- return NULL;
+ return false;
endBoth = endDate + (endTime - timestr.begin());
}
{
// check if we have a time followed by a date
if ( !dtTime.ParseTime(date, &endTime) )
- return NULL;
+ return false;
while ( endTime != date.end() && wxIsspace(*endTime) )
++endTime;
const wxString datestr(endTime, date.end());
if ( !dtDate.ParseDate(datestr, &endDate) )
- return NULL;
+ return false;
endBoth = endTime + (endDate - datestr.begin());
}
dtTime.GetHour(), dtTime.GetMinute(), dtTime.GetSecond(),
dtTime.GetMillisecond());
- // Return endpoint of scan
- if ( end )
- *end = endBoth;
+ *end = endBoth;
- return date.c_str() + (endBoth - date.begin());
+ return true;
}
-const char *
+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 wxStringCharType *p = date.wx_str();
+ const wxString::const_iterator pBegin = date.begin();
+
+ wxString::const_iterator p = pBegin;
while ( wxIsspace(*p) )
p++;
{ wxTRANSLATE("tomorrow"), 1 },
};
+ const size_t lenRest = date.end() - p;
for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ )
{
const wxString dateStr = wxGetTranslation(literalDates[n].str);
size_t len = dateStr.length();
- if ( wxStrlen(p) >= len )
- {
- wxString str(p, len);
- if ( str.CmpNoCase(dateStr) == 0 )
- {
- // nothing can follow this, so stop here
- p += len;
- int dayDiffFromToday = literalDates[n].dayDiffFromToday;
- *this = Today();
- if ( dayDiffFromToday )
- {
- *this += wxDateSpan::Days(dayDiffFromToday);
- }
+ if ( len > lenRest )
+ continue;
+
+ const wxString::const_iterator pEnd = p + len;
+ if ( wxString(p, pEnd).CmpNoCase(dateStr) == 0 )
+ {
+ // nothing can follow this, so stop here
- const size_t endpos = p - date.wx_str();
+ p = pEnd;
- if ( end )
- *end = date.begin() + endpos;
- return date.c_str() + endpos;
+ int dayDiffFromToday = literalDates[n].dayDiffFromToday;
+ *this = Today();
+ if ( dayDiffFromToday )
+ {
+ *this += wxDateSpan::Days(dayDiffFromToday);
}
+
+ *end = pEnd;
+
+ return true;
}
}
// tokenize the string
size_t nPosCur = 0;
static const wxStringCharType *dateDelimiters = wxS(".,/-\t\r\n ");
- wxStringTokenizer tok(p, dateDelimiters);
+ wxStringTokenizer tok(wxString(p, date.end()), dateDelimiters);
while ( tok.HasMoreTokens() )
{
wxString token = tok.GetNextToken();
else // not a number
{
// be careful not to overwrite the current mon value
- Month mon2 = GetMonthFromName(token, Name_Full | Name_Abbr);
+ Month mon2 = GetMonthFromName
+ (
+ token,
+ Name_Full | Name_Abbr,
+ DateLang_Local | DateLang_English
+ );
if ( mon2 != Inv_Month )
{
// it's a month
}
else // not a valid month name
{
- WeekDay wday2 = GetWeekDayFromName(token, Name_Full | Name_Abbr);
+ WeekDay wday2 = GetWeekDayFromName
+ (
+ token,
+ Name_Full | Name_Abbr,
+ DateLang_Local | DateLang_English
+ );
if ( wday2 != Inv_WeekDay )
{
// a week day
// 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 NULL;
- }
+ 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 NULL;
+ return false;
}
if ( !haveWDay && haveYear && !(haveDay && haveMon) )
}
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 NULL;
- }
+ return false;
}
if ( !haveMon )
// 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 NULL;
+ return false;
Set(day, mon, year);
{
// check that it is really the same
if ( GetWeekDay() != wday )
- {
- // inconsistency detected
- wxLogDebug(_T("ParseDate: inconsistent day/weekday."));
-
- return NULL;
- }
+ return false;
}
}
else // haveWDay
p--;
}
- const size_t endpos = p - date.wx_str();
- if ( end )
- *end = date.begin() + endpos;
+ *end = p;
- return date.c_str() + endpos;
+ return true;
}
-const char *
+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;
+ wxDateTime_t hour;
} stdTimes[] =
{
{ wxTRANSLATE("noon"), 12 },
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 )
+ const wxString timeString = wxGetTranslation(stdTimes[n].name);
+ const wxString::const_iterator p = time.begin() + timeString.length();
+ if ( timeString.CmpNoCase(wxString(time.begin(), p)) == 0 )
{
// casts required by DigitalMars
Set(stdTimes[n].hour, wxDateTime_t(0), wxDateTime_t(0));
if ( end )
- *end = time.begin() + len;
+ *end = p;
- return time.c_str() + len;
+ return true;
}
}
for ( size_t nFmt = 0; nFmt < WXSIZEOF(timeFormats); nFmt++ )
{
- const char *result = ParseFormat(time, timeFormats[nFmt], end);
- if ( result )
- return result;
+ if ( ParseFormat(time, timeFormats[nFmt], end) )
+ return true;
}
- return NULL;
+ return false;
}
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff