c398434d92
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@59829 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2337 lines
74 KiB
C++
2337 lines
74 KiB
C++
///////////////////////////////////////////////////////////////////////////////
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// Name: src/common/datetimefmt.cpp
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// Purpose: wxDateTime formatting & parsing code
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 11.05.99
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// RCS-ID: $Id$
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// Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// parts of code taken from sndcal library by Scott E. Lee:
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//
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// Copyright 1993-1995, Scott E. Lee, all rights reserved.
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// Permission granted to use, copy, modify, distribute and sell
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// so long as the above copyright and this permission statement
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// are retained in all copies.
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//
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// Licence: wxWindows licence
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///////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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// For compilers that support precompilation, includes "wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#if !defined(wxUSE_DATETIME) || wxUSE_DATETIME
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#ifndef WX_PRECOMP
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#ifdef __WXMSW__
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#include "wx/msw/wrapwin.h"
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#endif
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#include "wx/string.h"
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#include "wx/log.h"
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#include "wx/intl.h"
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#include "wx/stopwatch.h" // for wxGetLocalTimeMillis()
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#include "wx/module.h"
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#include "wx/crt.h"
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#endif // WX_PRECOMP
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#include "wx/thread.h"
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#include "wx/tokenzr.h"
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#include <ctype.h>
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#ifdef __WINDOWS__
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#include <winnls.h>
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#ifndef __WXWINCE__
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#include <locale.h>
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#endif
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#endif
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#include "wx/datetime.h"
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// ============================================================================
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// implementation of wxDateTime
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// ============================================================================
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// ----------------------------------------------------------------------------
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// helpers shared between datetime.cpp and datetimefmt.cpp
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// ----------------------------------------------------------------------------
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extern void InitTm(struct tm& tm);
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extern int GetTimeZone();
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extern wxString CallStrftime(const wxString& format, const tm* tm);
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// ----------------------------------------------------------------------------
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// constants (see also datetime.cpp)
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// ----------------------------------------------------------------------------
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static const int DAYS_PER_WEEK = 7;
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static const int HOURS_PER_DAY = 24;
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static const int SEC_PER_MIN = 60;
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static const int MIN_PER_HOUR = 60;
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// ----------------------------------------------------------------------------
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// parsing helpers
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// ----------------------------------------------------------------------------
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namespace
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{
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#ifdef HAVE_STRPTIME
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#if wxUSE_UNIX && !defined(HAVE_STRPTIME_DECL)
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// configure detected that we had strptime() but not its declaration,
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// provide it ourselves
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extern "C" char *strptime(const char *, const char *, struct tm *);
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#endif
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// strptime() wrapper: call strptime() for the string starting at the given
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// iterator and fill output tm struct with the results and modify input to
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// point to the end of the string consumed by strptime() if successful,
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// otherwise return false and don't modify anything
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bool
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CallStrptime(const wxString& str,
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wxString::const_iterator& p,
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const char *fmt,
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tm *tm)
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{
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// convert from iterator to char pointer: this is simple as wxCStrData
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// already supports this
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const char * const start = str.c_str() + (p - str.begin());
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const char * const end = strptime(start, fmt, tm);
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if ( !end )
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return false;
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// convert back from char pointer to iterator: unfortunately we have no way
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// to do it efficiently currently so create a temporary string just to
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// compute the number of characters between start and end
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p += wxString(start, end - start).length();
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return true;
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}
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#endif // HAVE_STRPTIME
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enum
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{
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DateLang_English = 1,
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DateLang_Local = 2
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};
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// return the month if the string is a month name or Inv_Month otherwise
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//
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// flags can contain wxDateTime::Name_Abbr/Name_Full or both of them and lang
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// can be either DateLang_Local (default) to interpret string as a localized
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// month name or DateLang_English to parse it as a standard English name or
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// their combination to interpret it in any way
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wxDateTime::Month
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GetMonthFromName(const wxString& name, int flags, int lang)
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{
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wxDateTime::Month mon;
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for ( mon = wxDateTime::Jan; mon < wxDateTime::Inv_Month; wxNextMonth(mon) )
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{
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// case-insensitive comparison either one of or with both abbreviated
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// and not versions
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if ( flags & wxDateTime::Name_Full )
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{
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if ( lang & DateLang_English )
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{
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if ( name.CmpNoCase(wxDateTime::GetEnglishMonthName(mon,
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wxDateTime::Name_Full)) == 0 )
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break;
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}
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if ( lang & DateLang_Local )
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{
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if ( name.CmpNoCase(wxDateTime::GetMonthName(mon,
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wxDateTime::Name_Full)) == 0 )
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break;
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}
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}
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if ( flags & wxDateTime::Name_Abbr )
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{
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if ( lang & DateLang_English )
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{
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if ( name.CmpNoCase(wxDateTime::GetEnglishMonthName(mon,
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wxDateTime::Name_Abbr)) == 0 )
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break;
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}
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if ( lang & DateLang_Local )
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{
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if ( name.CmpNoCase(wxDateTime::GetMonthName(mon,
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wxDateTime::Name_Abbr)) == 0 )
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break;
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}
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}
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}
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return mon;
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}
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// return the weekday if the string is a weekday name or Inv_WeekDay otherwise
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//
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// flags and lang parameters have the same meaning as for GetMonthFromName()
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// above
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wxDateTime::WeekDay
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GetWeekDayFromName(const wxString& name, int flags, int lang)
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{
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wxDateTime::WeekDay wd;
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for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
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{
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if ( flags & wxDateTime::Name_Full )
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{
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if ( lang & DateLang_English )
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{
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if ( name.CmpNoCase(wxDateTime::GetEnglishWeekDayName(wd,
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wxDateTime::Name_Full)) == 0 )
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break;
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}
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if ( lang & DateLang_Local )
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{
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if ( name.CmpNoCase(wxDateTime::GetWeekDayName(wd,
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wxDateTime::Name_Full)) == 0 )
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break;
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}
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}
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if ( flags & wxDateTime::Name_Abbr )
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{
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if ( lang & DateLang_English )
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{
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if ( name.CmpNoCase(wxDateTime::GetEnglishWeekDayName(wd,
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wxDateTime::Name_Abbr)) == 0 )
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break;
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}
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if ( lang & DateLang_Local )
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{
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if ( name.CmpNoCase(wxDateTime::GetWeekDayName(wd,
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wxDateTime::Name_Abbr)) == 0 )
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break;
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}
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}
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}
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return wd;
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}
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// scans all digits (but no more than len) and returns the resulting number
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bool GetNumericToken(size_t len,
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wxString::const_iterator& p,
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unsigned long *number)
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{
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size_t n = 1;
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wxString s;
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while ( wxIsdigit(*p) )
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{
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s += *p++;
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if ( len && ++n > len )
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break;
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}
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return !s.empty() && s.ToULong(number);
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}
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// scans all alphabetic characters and returns the resulting string
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wxString GetAlphaToken(wxString::const_iterator& p)
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{
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wxString s;
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while ( wxIsalpha(*p) )
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{
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s += *p++;
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}
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return s;
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}
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// parses string starting at given iterator using the specified format and,
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// optionally, a fall back format (and optionally another one... but it stops
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// there, really)
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//
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// if unsuccessful, returns invalid wxDateTime without changing p; otherwise
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// advance p to the end of the match and returns wxDateTime containing the
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// results of the parsing
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wxDateTime
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ParseFormatAt(wxString::const_iterator& p,
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const wxString::const_iterator& end,
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const wxString& fmt,
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// FIXME-VC6: using wxString() instead of wxEmptyString in the
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// line below results in error C2062: type 'class
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// wxString (__cdecl *)(void)' unexpected
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const wxString& fmtAlt = wxEmptyString,
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const wxString& fmtAlt2 = wxString())
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{
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const wxString str(p, end);
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wxString::const_iterator endParse;
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wxDateTime dt;
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if ( dt.ParseFormat(str, fmt, &endParse) ||
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(!fmtAlt.empty() && dt.ParseFormat(str, fmtAlt, &endParse)) ||
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(!fmtAlt2.empty() && dt.ParseFormat(str, fmtAlt2, &endParse)) )
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{
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p += endParse - str.begin();
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}
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//else: all formats failed
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return dt;
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}
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} // anonymous namespace
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// ----------------------------------------------------------------------------
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// wxDateTime to/from text representations
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// ----------------------------------------------------------------------------
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wxString wxDateTime::Format(const wxString& format, const TimeZone& tz) const
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{
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wxCHECK_MSG( !format.empty(), wxEmptyString,
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_T("NULL format in wxDateTime::Format") );
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// we have to use our own implementation if the date is out of range of
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// strftime() or if we use non standard specificators
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#ifdef HAVE_STRFTIME
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time_t time = GetTicks();
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if ( (time != (time_t)-1) && !wxStrstr(format, _T("%l")) )
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{
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// use strftime()
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struct tm tmstruct;
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struct tm *tm;
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if ( tz.GetOffset() == -GetTimeZone() )
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{
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// we are working with local time
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tm = wxLocaltime_r(&time, &tmstruct);
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// should never happen
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wxCHECK_MSG( tm, wxEmptyString, _T("wxLocaltime_r() failed") );
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}
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else
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{
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time += (int)tz.GetOffset();
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#if defined(__VMS__) || defined(__WATCOMC__) // time is unsigned so avoid warning
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int time2 = (int) time;
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if ( time2 >= 0 )
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#else
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if ( time >= 0 )
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#endif
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{
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tm = wxGmtime_r(&time, &tmstruct);
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// should never happen
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wxCHECK_MSG( tm, wxEmptyString, _T("wxGmtime_r() failed") );
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}
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else
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{
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tm = (struct tm *)NULL;
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}
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}
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if ( tm )
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{
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return CallStrftime(format, tm);
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}
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}
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//else: use generic code below
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#endif // HAVE_STRFTIME
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// we only parse ANSI C format specifications here, no POSIX 2
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// complications, no GNU extensions but we do add support for a "%l" format
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// specifier allowing to get the number of milliseconds
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Tm tm = GetTm(tz);
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// used for calls to strftime() when we only deal with time
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struct tm tmTimeOnly;
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tmTimeOnly.tm_hour = tm.hour;
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tmTimeOnly.tm_min = tm.min;
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tmTimeOnly.tm_sec = tm.sec;
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tmTimeOnly.tm_wday = 0;
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tmTimeOnly.tm_yday = 0;
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tmTimeOnly.tm_mday = 1; // any date will do
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tmTimeOnly.tm_mon = 0;
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tmTimeOnly.tm_year = 76;
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tmTimeOnly.tm_isdst = 0; // no DST, we adjust for tz ourselves
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wxString tmp, res, fmt;
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for ( wxString::const_iterator p = format.begin(); p != format.end(); ++p )
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{
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if ( *p != _T('%') )
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{
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// copy as is
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res += *p;
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continue;
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}
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// set the default format
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switch ( (*++p).GetValue() )
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{
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case _T('Y'): // year has 4 digits
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fmt = _T("%04d");
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break;
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case _T('j'): // day of year has 3 digits
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case _T('l'): // milliseconds have 3 digits
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fmt = _T("%03d");
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break;
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case _T('w'): // week day as number has only one
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fmt = _T("%d");
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break;
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default:
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// it's either another valid format specifier in which case
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// the format is "%02d" (for all the rest) or we have the
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// field width preceding the format in which case it will
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// override the default format anyhow
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fmt = _T("%02d");
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}
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bool restart = true;
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while ( restart )
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{
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restart = false;
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// start of the format specification
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switch ( (*p).GetValue() )
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{
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case _T('a'): // a weekday name
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case _T('A'):
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// second parameter should be true for abbreviated names
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res += GetWeekDayName(tm.GetWeekDay(),
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*p == _T('a') ? Name_Abbr : Name_Full);
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break;
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case _T('b'): // a month name
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case _T('B'):
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res += GetMonthName(tm.mon,
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*p == _T('b') ? Name_Abbr : Name_Full);
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break;
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case _T('c'): // locale default date and time representation
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case _T('x'): // locale default date representation
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#ifdef HAVE_STRFTIME
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//
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// the problem: there is no way to know what do these format
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// specifications correspond to for the current locale.
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//
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// the solution: use a hack and still use strftime(): first
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// find the YEAR which is a year in the strftime() range (1970
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// - 2038) whose Jan 1 falls on the same week day as the Jan 1
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// of the real year. Then make a copy of the format and
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// replace all occurrences of YEAR in it with some unique
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// string not appearing anywhere else in it, then use
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// strftime() to format the date in year YEAR and then replace
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// YEAR back by the real year and the unique replacement
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// string back with YEAR. Notice that "all occurrences of YEAR"
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// means all occurrences of 4 digit as well as 2 digit form!
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//
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// the bugs: we assume that neither of %c nor %x contains any
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// fields which may change between the YEAR and real year. For
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// example, the week number (%U, %W) and the day number (%j)
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// will change if one of these years is leap and the other one
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// is not!
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{
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// find the YEAR: normally, for any year X, Jan 1 of the
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// year X + 28 is the same weekday as Jan 1 of X (because
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// the weekday advances by 1 for each normal X and by 2
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// for each leap X, hence by 5 every 4 years or by 35
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// which is 0 mod 7 every 28 years) but this rule breaks
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// down if there are years between X and Y which are
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// divisible by 4 but not leap (i.e. divisible by 100 but
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// not 400), hence the correction.
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int yearReal = GetYear(tz);
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int mod28 = yearReal % 28;
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// be careful to not go too far - we risk to leave the
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// supported range
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int year;
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if ( mod28 < 10 )
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{
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year = 1988 + mod28; // 1988 == 0 (mod 28)
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}
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else
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{
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year = 1970 + mod28 - 10; // 1970 == 10 (mod 28)
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}
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int nCentury = year / 100,
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nCenturyReal = yearReal / 100;
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// need to adjust for the years divisble by 400 which are
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// not leap but are counted like leap ones if we just take
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// the number of centuries in between for nLostWeekDays
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int nLostWeekDays = (nCentury - nCenturyReal) -
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(nCentury / 4 - nCenturyReal / 4);
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// we have to gain back the "lost" weekdays: note that the
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// effect of this loop is to not do anything to
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// nLostWeekDays (which we won't use any more), but to
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// (indirectly) set the year correctly
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while ( (nLostWeekDays % 7) != 0 )
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{
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nLostWeekDays += year++ % 4 ? 1 : 2;
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}
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// finally move the year below 2000 so that the 2-digit
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// year number can never match the month or day of the
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// month when we do the replacements below
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if ( year >= 2000 )
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year -= 28;
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wxASSERT_MSG( year >= 1970 && year < 2000,
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_T("logic error in wxDateTime::Format") );
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|
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// use strftime() to format the same date but in supported
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// year
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//
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// NB: we assume that strftime() doesn't check for the
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// date validity and will happily format the date
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// corresponding to Feb 29 of a non leap year (which
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// may happen if yearReal was leap and year is not)
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struct tm tmAdjusted;
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InitTm(tmAdjusted);
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tmAdjusted.tm_hour = tm.hour;
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tmAdjusted.tm_min = tm.min;
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tmAdjusted.tm_sec = tm.sec;
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tmAdjusted.tm_wday = tm.GetWeekDay();
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tmAdjusted.tm_yday = GetDayOfYear();
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tmAdjusted.tm_mday = tm.mday;
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tmAdjusted.tm_mon = tm.mon;
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tmAdjusted.tm_year = year - 1900;
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tmAdjusted.tm_isdst = 0; // no DST, already adjusted
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wxString str = CallStrftime(*p == _T('c') ? _T("%c")
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: _T("%x"),
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&tmAdjusted);
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// now replace the replacement year with the real year:
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// notice that we have to replace the 4 digit year with
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// a unique string not appearing in strftime() output
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// first to prevent the 2 digit year from matching any
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// substring of the 4 digit year (but any day, month,
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// hours or minutes components should be safe because
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// they are never in 70-99 range)
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wxString replacement("|");
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while ( str.find(replacement) != wxString::npos )
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replacement += '|';
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str.Replace(wxString::Format("%d", year),
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replacement);
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str.Replace(wxString::Format("%d", year % 100),
|
|
wxString::Format("%d", yearReal % 100));
|
|
str.Replace(replacement,
|
|
wxString::Format("%d", yearReal));
|
|
|
|
res += str;
|
|
}
|
|
#else // !HAVE_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 // HAVE_STRFTIME/!HAVE_STRFTIME
|
|
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
|
|
#ifdef HAVE_STRFTIME
|
|
res += CallStrftime(_T("%p"), &tmTimeOnly);
|
|
#else // !HAVE_STRFTIME
|
|
res += (tmTimeOnly.tm_hour > 12) ? wxT("pm") : wxT("am");
|
|
#endif // HAVE_STRFTIME/!HAVE_STRFTIME
|
|
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
|
|
#ifdef HAVE_STRFTIME
|
|
res += CallStrftime(_T("%X"), &tmTimeOnly);
|
|
#else // !HAVE_STRFTIME
|
|
res += wxString::Format(wxT("%02d:%02d:%02d"),tm.hour, tm.min, tm.sec);
|
|
#endif // HAVE_STRFTIME/!HAVE_STRFTIME
|
|
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
|
|
#ifdef HAVE_STRFTIME
|
|
res += CallStrftime(_T("%Z"), &tmTimeOnly);
|
|
#endif
|
|
break;
|
|
|
|
default:
|
|
// is it the format width?
|
|
fmt.Empty();
|
|
while ( *p == _T('-') || *p == _T('+') ||
|
|
*p == _T(' ') || wxIsdigit(*p) )
|
|
{
|
|
fmt += *p;
|
|
}
|
|
|
|
if ( !fmt.empty() )
|
|
{
|
|
// 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.
|
|
bool
|
|
wxDateTime::ParseRfc822Date(const wxString& date, wxString::const_iterator *end)
|
|
{
|
|
wxString::const_iterator p = date.begin();
|
|
|
|
// 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
|
|
|
|
p = endWday;
|
|
|
|
// 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
|
|
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 = endMonth;
|
|
|
|
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 wxDUMMY_INITIALIZE(0);
|
|
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 < _T('A') || *p > _T('Z') || *p == _T('J') )
|
|
return false;
|
|
|
|
offset = offsets[*p++ - 'A'];
|
|
}
|
|
else
|
|
{
|
|
// abbreviation
|
|
const wxString tz(p, date.end());
|
|
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
|
|
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);
|
|
MakeFromTimezone(TimeZone::Make(offset*SEC_PER_MIN));
|
|
|
|
if ( end )
|
|
*end = p;
|
|
|
|
return true;
|
|
}
|
|
|
|
#ifdef __WINDOWS__
|
|
|
|
// returns the string containing strftime() format used for short dates in the
|
|
// current locale or an empty string
|
|
static wxString GetLocaleDateFormat()
|
|
{
|
|
wxString fmtWX;
|
|
|
|
// there is no setlocale() under Windows CE, so just always query the
|
|
// system there
|
|
#ifndef __WXWINCE__
|
|
if ( strcmp(setlocale(LC_ALL, NULL), "C") != 0 )
|
|
#endif
|
|
{
|
|
// The locale was programatically set to non-C. We assume that this was
|
|
// done using wxLocale, in which case thread's current locale is also
|
|
// set to correct LCID value and we can use GetLocaleInfo to determine
|
|
// the correct formatting string:
|
|
#ifdef __WXWINCE__
|
|
LCID lcid = LOCALE_USER_DEFAULT;
|
|
#else
|
|
LCID lcid = GetThreadLocale();
|
|
#endif
|
|
// according to MSDN 80 chars is max allowed for short date format
|
|
wxChar fmt[81];
|
|
if ( ::GetLocaleInfo(lcid, LOCALE_SSHORTDATE, fmt, WXSIZEOF(fmt)) )
|
|
{
|
|
wxChar chLast = _T('\0');
|
|
size_t lastCount = 0;
|
|
for ( const wxChar *p = fmt; /* NUL handled inside */; p++ )
|
|
{
|
|
if ( *p == chLast )
|
|
{
|
|
lastCount++;
|
|
continue;
|
|
}
|
|
|
|
switch ( *p )
|
|
{
|
|
// these characters come in groups, start counting them
|
|
case _T('d'):
|
|
case _T('M'):
|
|
case _T('y'):
|
|
case _T('g'):
|
|
chLast = *p;
|
|
lastCount = 1;
|
|
break;
|
|
|
|
default:
|
|
// first deal with any special characters we have had
|
|
if ( lastCount )
|
|
{
|
|
switch ( chLast )
|
|
{
|
|
case _T('d'):
|
|
switch ( lastCount )
|
|
{
|
|
case 1: // d
|
|
case 2: // dd
|
|
// these two are the same as we
|
|
// don't distinguish between 1 and
|
|
// 2 digits for days
|
|
fmtWX += _T("%d");
|
|
break;
|
|
|
|
case 3: // ddd
|
|
fmtWX += _T("%a");
|
|
break;
|
|
|
|
case 4: // dddd
|
|
fmtWX += _T("%A");
|
|
break;
|
|
|
|
default:
|
|
wxFAIL_MSG( _T("too many 'd's") );
|
|
}
|
|
break;
|
|
|
|
case _T('M'):
|
|
switch ( lastCount )
|
|
{
|
|
case 1: // M
|
|
case 2: // MM
|
|
// as for 'd' and 'dd' above
|
|
fmtWX += _T("%m");
|
|
break;
|
|
|
|
case 3:
|
|
fmtWX += _T("%b");
|
|
break;
|
|
|
|
case 4:
|
|
fmtWX += _T("%B");
|
|
break;
|
|
|
|
default:
|
|
wxFAIL_MSG( _T("too many 'M's") );
|
|
}
|
|
break;
|
|
|
|
case _T('y'):
|
|
switch ( lastCount )
|
|
{
|
|
case 1: // y
|
|
case 2: // yy
|
|
fmtWX += _T("%y");
|
|
break;
|
|
|
|
case 4: // yyyy
|
|
fmtWX += _T("%Y");
|
|
break;
|
|
|
|
default:
|
|
wxFAIL_MSG( _T("wrong number of 'y's") );
|
|
}
|
|
break;
|
|
|
|
case _T('g'):
|
|
// strftime() doesn't have era string,
|
|
// ignore this format
|
|
wxASSERT_MSG( lastCount <= 2,
|
|
_T("too many 'g's") );
|
|
break;
|
|
|
|
default:
|
|
wxFAIL_MSG( _T("unreachable") );
|
|
}
|
|
|
|
chLast = _T('\0');
|
|
lastCount = 0;
|
|
}
|
|
|
|
// not a special character so must be just a separator,
|
|
// treat as is
|
|
if ( *p != _T('\0') )
|
|
{
|
|
if ( *p == _T('%') )
|
|
{
|
|
// this one needs to be escaped
|
|
fmtWX += _T('%');
|
|
}
|
|
|
|
fmtWX += *p;
|
|
}
|
|
}
|
|
|
|
if ( *p == _T('\0') )
|
|
break;
|
|
}
|
|
}
|
|
//else: GetLocaleInfo() failed, leave fmtDate value unchanged and
|
|
// try our luck with the default formats
|
|
}
|
|
//else: default C locale, default formats should work
|
|
|
|
return fmtWX;
|
|
}
|
|
|
|
#endif // __WINDOWS__
|
|
|
|
bool
|
|
wxDateTime::ParseFormat(const wxString& date,
|
|
const wxString& format,
|
|
const wxDateTime& dateDef,
|
|
wxString::const_iterator *end)
|
|
{
|
|
wxCHECK_MSG( !format.empty(), false, "format can't be empty" );
|
|
wxCHECK_MSG( end, 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
|
|
|
|
// 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;
|
|
|
|
wxString::const_iterator input = date.begin();
|
|
for ( wxString::const_iterator fmt = format.begin(); fmt != format.end(); ++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 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 _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).GetValue() )
|
|
{
|
|
case _T('a'): // a weekday name
|
|
case _T('A'):
|
|
{
|
|
wday = GetWeekDayFromName
|
|
(
|
|
GetAlphaToken(input),
|
|
*fmt == 'a' ? Name_Abbr : Name_Full,
|
|
DateLang_Local
|
|
);
|
|
if ( wday == Inv_WeekDay )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
}
|
|
haveWDay = true;
|
|
break;
|
|
|
|
case _T('b'): // a month name
|
|
case _T('B'):
|
|
{
|
|
mon = GetMonthFromName
|
|
(
|
|
GetAlphaToken(input),
|
|
*fmt == 'b' ? Name_Abbr : Name_Full,
|
|
DateLang_Local
|
|
);
|
|
if ( mon == Inv_Month )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
}
|
|
haveMon = true;
|
|
break;
|
|
|
|
case _T('c'): // locale default date and time representation
|
|
{
|
|
#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
|
|
if ( CallStrptime(date, input, "%c", &tm) )
|
|
{
|
|
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;
|
|
}
|
|
else // strptime() failed; try generic heuristic code
|
|
#endif // HAVE_STRPTIME
|
|
{
|
|
|
|
// try the format which corresponds to ctime() output
|
|
// first, then the generic date/time formats
|
|
const wxDateTime dt = ParseFormatAt
|
|
(
|
|
input,
|
|
date.end(),
|
|
wxS("%a %b %d %H:%M:%S %Y"),
|
|
wxS("%x %X"),
|
|
wxS("%X %x")
|
|
);
|
|
if ( !dt.IsValid() )
|
|
return false;
|
|
|
|
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 _T('d'): // day of a month (01-31)
|
|
if ( !GetNumericToken(width, input, &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 _T('H'): // hour in 24h format (00-23)
|
|
if ( !GetNumericToken(width, input, &num) || (num > 23) )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
|
|
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 false;
|
|
}
|
|
|
|
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 false;
|
|
}
|
|
|
|
haveYDay = true;
|
|
yday = (wxDateTime_t)num;
|
|
break;
|
|
|
|
case _T('l'): // milliseconds (0-999)
|
|
if ( !GetNumericToken(width, input, &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) )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
|
|
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 false;
|
|
}
|
|
|
|
haveMin = true;
|
|
min = (wxDateTime_t)num;
|
|
break;
|
|
|
|
case _T('p'): // AM or PM string
|
|
{
|
|
wxString am, pm, token = GetAlphaToken(input);
|
|
|
|
// 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 false; // no am/pm strings defined
|
|
if ( token.CmpNoCase(pm) == 0 )
|
|
{
|
|
isPM = true;
|
|
}
|
|
else if ( token.CmpNoCase(am) != 0 )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case _T('r'): // time as %I:%M:%S %p
|
|
{
|
|
wxDateTime dt;
|
|
if ( !dt.ParseFormat(wxString(input, date.end()),
|
|
wxS("%I:%M:%S %p"), &input) )
|
|
return false;
|
|
|
|
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
|
|
{
|
|
const wxDateTime
|
|
dt = ParseFormatAt(input, date.end(), wxS("%H:%M"));
|
|
if ( !dt.IsValid() )
|
|
return false;
|
|
|
|
haveHour =
|
|
haveMin = true;
|
|
|
|
Tm tm = dt.GetTm();
|
|
hour = tm.hour;
|
|
min = tm.min;
|
|
}
|
|
break;
|
|
|
|
case _T('S'): // second as a decimal number (00-61)
|
|
if ( !GetNumericToken(width, input, &num) || (num > 61) )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
|
|
haveSec = true;
|
|
sec = (wxDateTime_t)num;
|
|
break;
|
|
|
|
case _T('T'): // time as %H:%M:%S
|
|
{
|
|
const wxDateTime
|
|
dt = ParseFormatAt(input, date.end(), wxS("%H:%M:%S"));
|
|
if ( !dt.IsValid() )
|
|
return false;
|
|
|
|
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 false;
|
|
}
|
|
|
|
haveWDay = true;
|
|
wday = (WeekDay)num;
|
|
break;
|
|
|
|
case _T('x'): // locale default date representation
|
|
#ifdef HAVE_STRPTIME
|
|
// try using strptime() -- it may fail even if the input is
|
|
// correct but the date is out of range, so we will fall back
|
|
// to our generic code anyhow
|
|
{
|
|
struct tm tm;
|
|
|
|
if ( CallStrptime(date, input, "%x", &tm) )
|
|
{
|
|
haveDay = haveMon = haveYear = true;
|
|
|
|
year = 1900 + tm.tm_year;
|
|
mon = (Month)tm.tm_mon;
|
|
mday = tm.tm_mday;
|
|
|
|
break;
|
|
}
|
|
}
|
|
#endif // HAVE_STRPTIME
|
|
|
|
{
|
|
wxString fmtDate,
|
|
fmtDateAlt;
|
|
|
|
#ifdef __WINDOWS__
|
|
// The above doesn't work for all locales, try to query
|
|
// Windows for the right way of formatting the date:
|
|
fmtDate = GetLocaleDateFormat();
|
|
if ( fmtDate.empty() )
|
|
#endif // __WINDOWS__
|
|
{
|
|
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 wxDateTime
|
|
dt = ParseFormatAt(input, date.end(),
|
|
fmtDate, fmtDateAlt);
|
|
if ( !dt.IsValid() )
|
|
return false;
|
|
|
|
Tm tm = dt.GetTm();
|
|
|
|
haveDay =
|
|
haveMon =
|
|
haveYear = true;
|
|
|
|
year = tm.year;
|
|
mon = tm.mon;
|
|
mday = tm.mday;
|
|
}
|
|
|
|
break;
|
|
|
|
case _T('X'): // locale default time representation
|
|
#ifdef HAVE_STRPTIME
|
|
{
|
|
// use strptime() to do it for us (FIXME !Unicode friendly)
|
|
struct tm tm;
|
|
if ( !CallStrptime(date, input, "%X", &tm) )
|
|
return false;
|
|
|
|
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
|
|
const wxDateTime
|
|
dt = ParseFormatAt(input, date.end(), "%T", "%r");
|
|
if ( !dt.IsValid() )
|
|
return false;
|
|
|
|
haveHour =
|
|
haveMin =
|
|
haveSec = true;
|
|
|
|
Tm tm = dt.GetTm();
|
|
hour = tm.hour;
|
|
min = tm.min;
|
|
sec = tm.sec;
|
|
}
|
|
#endif // HAVE_STRPTIME/!HAVE_STRPTIME
|
|
break;
|
|
|
|
case _T('y'): // year without century (00-99)
|
|
if ( !GetNumericToken(width, input, &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 _T('Y'): // year with century
|
|
if ( !GetNumericToken(width, input, &num) )
|
|
{
|
|
// no match
|
|
return false;
|
|
}
|
|
|
|
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 false;
|
|
}
|
|
break;
|
|
|
|
case 0: // the end of string
|
|
wxFAIL_MSG(_T("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);
|
|
|
|
// finally check that the week day is consistent -- if we had it
|
|
if ( haveWDay && GetWeekDay() != wday )
|
|
return false;
|
|
|
|
*end = input;
|
|
|
|
return true;
|
|
}
|
|
|
|
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();
|
|
wxDateTime dtTime = wxDateTime::Today();
|
|
|
|
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;
|
|
}
|
|
|
|
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();
|
|
|
|
wxString::const_iterator p = pBegin;
|
|
while ( wxIsspace(*p) )
|
|
p++;
|
|
|
|
// some special cases
|
|
static struct
|
|
{
|
|
const char *str;
|
|
int dayDiffFromToday;
|
|
} literalDates[] =
|
|
{
|
|
{ wxTRANSLATE("today"), 0 },
|
|
{ wxTRANSLATE("yesterday"), -1 },
|
|
{ wxTRANSLATE("tomorrow"), 1 },
|
|
};
|
|
|
|
for ( size_t n = 0; n < WXSIZEOF(literalDates); n++ )
|
|
{
|
|
const wxString dateStr = wxGetTranslation(literalDates[n].str);
|
|
size_t len = dateStr.length();
|
|
|
|
const wxString::const_iterator pEnd = p + len;
|
|
if ( wxString(p, pEnd).CmpNoCase(dateStr) == 0 )
|
|
{
|
|
// nothing can follow this, so stop here
|
|
|
|
p = pEnd;
|
|
|
|
int dayDiffFromToday = literalDates[n].dayDiffFromToday;
|
|
*this = Today();
|
|
if ( dayDiffFromToday )
|
|
{
|
|
*this += wxDateSpan::Days(dayDiffFromToday);
|
|
}
|
|
|
|
*end = pEnd;
|
|
|
|
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?
|
|
|
|
// 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 wxStringCharType *dateDelimiters = wxS(".,/-\t\r\n ");
|
|
wxStringTokenizer tok(wxString(p, date.end()), dateDelimiters);
|
|
while ( tok.HasMoreTokens() )
|
|
{
|
|
wxString token = tok.GetNextToken();
|
|
if ( !token )
|
|
continue;
|
|
|
|
// is it a number?
|
|
unsigned long val;
|
|
if ( token.ToULong(&val) )
|
|
{
|
|
// guess what this number is
|
|
|
|
bool isDay = false,
|
|
isMonth = false,
|
|
isYear = false;
|
|
|
|
if ( !haveMon && val > 0 && val <= 12 )
|
|
{
|
|
// assume it is month
|
|
isMonth = true;
|
|
}
|
|
else // not the month
|
|
{
|
|
if ( haveDay )
|
|
{
|
|
// this can only be the year
|
|
isYear = true;
|
|
}
|
|
else // may be either day or year
|
|
{
|
|
// 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;
|
|
|
|
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,
|
|
DateLang_Local | DateLang_English
|
|
);
|
|
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
|
|
{
|
|
WeekDay wday2 = GetWeekDayFromName
|
|
(
|
|
token,
|
|
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 *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 )
|
|
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);
|
|
}
|
|
|
|
// return the pointer to the first unparsed char
|
|
p += nPosCur;
|
|
if ( nPosCur && wxStrchr(dateDelimiters, *(p - 1)) )
|
|
{
|
|
// if we couldn't parse the token after the delimiter, put back the
|
|
// delimiter as well
|
|
p--;
|
|
}
|
|
|
|
*end = p;
|
|
|
|
return true;
|
|
}
|
|
|
|
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);
|
|
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 = p;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// try all time formats we may think about in the order from longest to
|
|
// shortest
|
|
static const char *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:%S", // and a possibly 24 hour version without seconds
|
|
"%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;
|
|
}
|
|
|
|
// ----------------------------------------------------------------------------
|
|
// 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,
|
|
_T("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 == _T('%') )
|
|
{
|
|
// the start of the format specification of the printf() below
|
|
wxString fmtPrefix(_T('%'));
|
|
|
|
// 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( _T("invalid format character") );
|
|
// fall through
|
|
|
|
case _T('%'):
|
|
str += ch;
|
|
|
|
// skip the part below switch
|
|
continue;
|
|
|
|
case _T('D'):
|
|
n = GetDays();
|
|
if ( partBiggest < Part_Day )
|
|
{
|
|
n %= DAYS_PER_WEEK;
|
|
}
|
|
else
|
|
{
|
|
partBiggest = Part_Day;
|
|
}
|
|
break;
|
|
|
|
case _T('E'):
|
|
partBiggest = Part_Week;
|
|
n = GetWeeks();
|
|
break;
|
|
|
|
case _T('H'):
|
|
n = GetHours();
|
|
if ( partBiggest < Part_Hour )
|
|
{
|
|
n %= HOURS_PER_DAY;
|
|
}
|
|
else
|
|
{
|
|
partBiggest = Part_Hour;
|
|
}
|
|
|
|
digits = 2;
|
|
break;
|
|
|
|
case _T('l'):
|
|
n = GetMilliseconds().ToLong();
|
|
if ( partBiggest < Part_MSec )
|
|
{
|
|
n %= 1000;
|
|
}
|
|
//else: no need to reset partBiggest to Part_MSec, it is
|
|
// the least significant one anyhow
|
|
|
|
digits = 3;
|
|
break;
|
|
|
|
case _T('M'):
|
|
n = GetMinutes();
|
|
if ( partBiggest < Part_Min )
|
|
{
|
|
n %= MIN_PER_HOUR;
|
|
}
|
|
else
|
|
{
|
|
partBiggest = Part_Min;
|
|
}
|
|
|
|
digits = 2;
|
|
break;
|
|
|
|
case _T('S'):
|
|
n = GetSeconds().ToLong();
|
|
if ( partBiggest < Part_Sec )
|
|
{
|
|
n %= SEC_PER_MIN;
|
|
}
|
|
else
|
|
{
|
|
partBiggest = Part_Sec;
|
|
}
|
|
|
|
digits = 2;
|
|
break;
|
|
}
|
|
|
|
if ( digits )
|
|
{
|
|
fmtPrefix << _T("0") << digits;
|
|
}
|
|
|
|
str += wxString::Format(fmtPrefix + _T("ld"), n);
|
|
}
|
|
else
|
|
{
|
|
// normal character, just copy
|
|
str += ch;
|
|
}
|
|
}
|
|
|
|
return str;
|
|
}
|
|
|
|
#endif // wxUSE_DATETIME
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