c30aaf75f0
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@2003 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
657 lines
15 KiB
C++
657 lines
15 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: date.cpp
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// Purpose: wxDate class
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// Author:
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// Originally inspired by Steve Marcus (CIS 72007,1233) 6/16/91
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// Enhanced by Eric Simon (CIS 70540,1522) 6/29/91
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// Further Enhanced by Chris Hill (CIS 72030,2606) 7/11/91
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// Still Further Enhanced by Hill & Simon v3.10 8/05/91
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// Version 4 by Charles D. Price 6/27/92
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// Integrated into wxWindows by Julian Smart 9th July 1995
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// Modified by:
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// Created: 01/02/97
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart and Markus Holzem
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifdef __GNUG__
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#pragma implementation "date.h"
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#endif
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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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#include "wx/setup.h"
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#if wxUSE_TIMEDATE
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#include "wx/date.h"
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#include <wx/intl.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#if wxUSE_IOSTREAMH
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#include <iostream.h>
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#else
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#include <iostream>
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#endif
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#include <time.h>
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#include <string.h>
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#define ABBR_LENGTH 3
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static const char *dayname[] = {
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"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"
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};
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static const char *mname[] = {
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"January", "February", "March", "April", "May", "June", "July", "August",
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"September", "October", "November", "December"
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};
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static int GauDays[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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#if !USE_SHARED_LIBRARY
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IMPLEMENT_DYNAMIC_CLASS(wxDate, wxObject)
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#endif
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////////////////////////////////////////////////////////////
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// Constructors
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////////////////////////////////////////////////////////////
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wxDate::wxDate()
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{
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DisplayFormat=wxMDY;
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DisplayOptions='\0';
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month = day = year = day_of_week = 0;
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julian = 0;
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}
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wxDate::wxDate (long j) : julian(j)
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{
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DisplayFormat=wxMDY;
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DisplayOptions='\0';
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julian_to_mdy ();
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}
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wxDate::wxDate (int m, int d, int y) : month(m), day(d), year(y)
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{
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DisplayFormat=wxMDY;
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DisplayOptions='\0';
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mdy_to_julian ();
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}
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wxDate::wxDate (const wxString& dat)
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{
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DisplayFormat=wxMDY;
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DisplayOptions='\0';
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if (strcmp(dat, "TODAY") == 0 || strcmp(dat, "today") == 0)
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{
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// Sets the current date
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Set();
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}
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else
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{
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char buf[100];
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strcpy(buf, (char *) (const char *)dat);
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char *token = strtok(buf,"/-");
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month = atoi(token);
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day = atoi(strtok((char *) NULL,"/-"));
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year = atoi(strtok((char *) NULL," "));
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}
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mdy_to_julian ();
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}
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wxDate::wxDate (const wxDate &dt)
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{
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DisplayFormat=dt.DisplayFormat;
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DisplayOptions=dt.DisplayOptions;
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month = dt.month;
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day = dt.day;
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year = dt.year;
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mdy_to_julian ();
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}
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void wxDate::operator = (const wxDate &dt)
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{
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DisplayFormat=dt.DisplayFormat;
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DisplayOptions=dt.DisplayOptions;
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month = dt.month;
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day = dt.day;
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year = dt.year;
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mdy_to_julian (); // wxUSE_TIMEDATE
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}
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void wxDate::operator = (const wxString& dat)
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{
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DisplayFormat=wxMDY;
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DisplayOptions='\0';
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if (strcmp(dat, "TODAY") == 0 || strcmp(dat, "today") == 0)
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{
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// Sets the current date
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Set();
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}
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else
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{
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char buf[100];
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strcpy(buf, (char *)(const char *)dat);
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char *token = strtok(buf,"/-");
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month = atoi(token);
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day = atoi(strtok((char *) NULL,"/-"));
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year = atoi(strtok((char *) NULL," "));
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}
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mdy_to_julian ();
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}
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//////////////////////////////////////////////////////////////
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// Conversion operations
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//////////////////////////////////////////////////////////////
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#ifndef __SALFORDC__
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wxDate::operator wxString( void )
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{
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return FormatDate();
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}
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#endif
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//////////////////////////////////////////////////////////////
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// Date Arithmetic
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//////////////////////////////////////////////////////////////
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wxDate wxDate::operator + (long i)
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{
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wxDate dp(julian + i);
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return dp;
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}
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wxDate wxDate::operator + (int i)
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{
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wxDate dp(julian + (long)i);
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return dp;
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}
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wxDate wxDate::operator - (long i)
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{
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wxDate dp(julian - i);
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return dp;
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}
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wxDate wxDate::operator - (int i)
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{
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wxDate dp(julian - (long)i);
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return dp;
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}
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long wxDate::operator - (const wxDate &dt)
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{
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return ( julian - dt.julian );
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}
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wxDate &wxDate::operator += (long i)
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{
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julian += i;
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julian_to_mdy();
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return *this;
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}
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wxDate &wxDate::operator -= (long i)
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{
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julian -= i;
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julian_to_mdy();
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return *this;
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}
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wxDate &wxDate::operator ++()
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{
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julian++;
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julian_to_mdy();
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return *this;
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}
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wxDate &wxDate::operator ++(int)
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{
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julian++;
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julian_to_mdy();
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return *this;
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}
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wxDate &wxDate::operator --()
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{
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julian--;
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julian_to_mdy();
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return *this;
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}
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wxDate &wxDate::operator --(int)
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{
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julian--;
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julian_to_mdy();
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return *this;
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}
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//////////////////////////////////////////////////////////////
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// Date comparison
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//////////////////////////////////////////////////////////////
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bool WXDLLEXPORT operator < (const wxDate &dt1, const wxDate &dt2)
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{
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return ( dt1.julian < dt2.julian );
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}
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bool WXDLLEXPORT operator <= (const wxDate &dt1, const wxDate &dt2)
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{
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return ( (dt1.julian == dt2.julian) || (dt1.julian < dt2.julian) );
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}
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bool WXDLLEXPORT operator > (const wxDate &dt1, const wxDate &dt2)
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{
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return ( dt1.julian > dt2.julian );
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}
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bool WXDLLEXPORT operator >= (const wxDate &dt1, const wxDate &dt2)
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{
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return ( (dt1.julian == dt2.julian) || (dt1.julian > dt2.julian) );
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}
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bool WXDLLEXPORT operator == (const wxDate &dt1, const wxDate &dt2)
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{
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return ( dt1.julian == dt2.julian );
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}
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bool WXDLLEXPORT operator != (const wxDate &dt1, const wxDate &dt2)
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{
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return ( dt1.julian != dt2.julian );
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}
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////////////////////////////////////////////////////////////////
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// Ostream operations
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////////////////////////////////////////////////////////////////
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ostream WXDLLEXPORT & operator << (ostream &os, const wxDate &dt)
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{
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return os << (const char *) dt.FormatDate();
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}
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//////////////////////////////////////////////////////////////
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// Conversion routines
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//////////////////////////////////////////////////////////////
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void wxDate::julian_to_wday (void)
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{
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day_of_week = (int) ((julian + 2) % 7 + 1);
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}
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void wxDate::julian_to_mdy ()
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{
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long a,b,c,d,e,z,alpha;
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z = julian+1;
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// dealing with Gregorian calendar reform
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if (z < 2299161L)
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a = z;
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else {
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alpha = (long) ((z-1867216.25) / 36524.25);
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a = z + 1 + alpha - alpha/4;
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}
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b = ( a > 1721423 ? a + 1524 : a + 1158 );
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c = (long) ((b - 122.1) / 365.25);
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d = (long) (365.25 * c);
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e = (long) ((b - d) / 30.6001);
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day = (int)(b - d - (long)(30.6001 * e));
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month = (int)((e < 13.5) ? e - 1 : e - 13);
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year = (int)((month > 2.5 ) ? (c - 4716) : c - 4715);
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julian_to_wday ();
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}
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void wxDate::mdy_to_julian (void)
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{
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int a,b=0;
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int work_month=month, work_day=day, work_year=year;
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// correct for negative year
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if (work_year < 0)
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work_year++;
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if (work_month <= 2)
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{ work_year--; work_month +=12; }
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// deal with Gregorian calendar
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if (work_year*10000. + work_month*100. + work_day >= 15821015.)
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{
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a = (int)(work_year/100.);
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b = 2 - a + a/4;
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}
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julian = (long) (365.25*work_year) +
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(long) (30.6001 * (work_month+1)) + work_day + 1720994L + b;
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julian_to_wday ();
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}
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////////////////////////////////////////////////////////////////
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// Format routine
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////////////////////////////////////////////////////////////////
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wxString wxDate::FormatDate (int type) const
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{
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int actualType = type;
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if (actualType == -1)
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actualType = DisplayFormat;
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char buf[40];
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memset( buf, '\0', sizeof(buf) );
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switch ( actualType )
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{
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case wxDAY:
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if ( (day_of_week < 1) || (day_of_week > 7) )
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strcpy(buf, _("invalid day"));
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else
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strncpy( buf, _(dayname[day_of_week-1]),
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(DisplayOptions & wxDATE_ABBR) ? ABBR_LENGTH : 9);
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return wxString(buf);
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case wxMONTH:
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if ( (month < 1) || (month > 12) )
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strcpy(buf, _("invalid month"));
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else
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strncpy( buf, _(mname[month-1]),
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(DisplayOptions & wxDATE_ABBR) ? ABBR_LENGTH : 9);
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return wxString(buf);
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case wxFULL:
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if ( (month < 1) || (month > 12) || (day_of_week < 0) ||
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(day_of_week > 7) )
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{
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strcpy(buf, _("invalid date"));
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return wxString(buf);
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}
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strncpy( buf, _(dayname[day_of_week-1]),
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(DisplayOptions & wxDATE_ABBR) ? ABBR_LENGTH : 9);
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strcat( buf, ", ");
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strncat( buf, _(mname[month-1]),
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(DisplayOptions & wxDATE_ABBR) ? ABBR_LENGTH : 9);
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strcat( buf, " ");
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sprintf( buf+strlen(buf), "%d, %d", day, abs(year) );
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if (year < 0)
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strcat(buf,_(" B.C."));
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return wxString(buf);
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case wxEUROPEAN:
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if ( (month < 1) || (month > 12) || (day_of_week < 0) ||
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(day_of_week > 7) )
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{
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strcpy(buf, _("invalid date"));
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return wxString(buf);
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}
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sprintf(buf,"%d ", day);
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strncat(buf, _(mname[month-1]),
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(DisplayOptions & wxDATE_ABBR) ? ABBR_LENGTH : 9);
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sprintf( buf+strlen(buf), " %d", abs(year) );
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if (year < 0)
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strcat(buf, _(" B.C."));
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return wxString(buf);
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case wxMDY:
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default:
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if (day==0 || month==0 || year==0)
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strcpy(buf, _("invalid date"));
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else
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sprintf( buf+strlen(buf), "%1d/%1d/%02d", month, day,
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(DisplayOptions & wxNO_CENTURY) && (abs(year) > 1899)
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? (abs(year) - (abs(year) / 100 * 100))
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: (abs(year)) );
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return wxString(buf);
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}
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return wxString("");
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}
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void wxDate::SetFormat( int format )
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{
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DisplayFormat = format;
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}
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int wxDate::SetOption( int option, bool action )
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{
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switch ( option )
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{
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case wxNO_CENTURY:
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if ( action )
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DisplayOptions |= wxNO_CENTURY;
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else
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{
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DisplayOptions &= (~wxNO_CENTURY);
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}
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return 1;
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case wxDATE_ABBR:
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if ( action )
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DisplayOptions |= wxDATE_ABBR;
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else
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{
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DisplayOptions &= (~wxDATE_ABBR);
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}
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return 1;
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default:
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return 0;
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}
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return 0;
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}
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///////////////////////////////////////////////////////////////
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// Miscellaneous Routines
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///////////////////////////////////////////////////////////////
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long wxDate::GetJulianDate( void ) const
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{
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return julian;
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}
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int wxDate::GetDayOfYear( void ) const
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{
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wxDate temp( 1, 1, year );
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return (int) (julian - temp.julian + 1);
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}
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bool wxDate::IsLeapYear( void ) const
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{
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return ( (year >= 1582) ?
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(year % 4 == 0 && year % 100 != 0 || year % 400 == 0 ):
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(year % 4 == 0) );
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}
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// Version 4.0 Extension to Public Interface - CDP
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wxDate& wxDate::Set()
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{
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//#ifdef __WXMSW__
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#if 0
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struct _dosdate_t sDate;
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_dos_getdate(&sDate);
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month = sDate.month;
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day = sDate.day;
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year = sDate.year;
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mdy_to_julian();
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#else
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time_t now = time((time_t *) NULL);
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struct tm *localTime = localtime(&now);
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month = localTime->tm_mon + 1;
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day = localTime->tm_mday;
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year = localTime->tm_year + 1900;
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mdy_to_julian ();
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#endif
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return *this;
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}
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wxDate& wxDate::Set(
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int nMonth,
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int nDay,
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int nYear)
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{
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month = nMonth;
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year = nYear < 0 ? 9999 : nYear;
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year = nYear > 9999 ? 0 : nYear;
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day = nDay < GetDaysInMonth() ? nDay : GetDaysInMonth();
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mdy_to_julian();
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return *this;
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}
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wxDate &
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wxDate::Set(long j)
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{
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julian = j;
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julian_to_mdy();
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return *this;
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}
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int wxDate::GetDaysInMonth()
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{
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return GauDays[month-1] + (month==2 && IsLeapYear());
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}
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int wxDate::GetFirstDayOfMonth() const
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{
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return wxDate(month, 1, year).GetDayOfWeek();
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}
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int wxDate::GetDay() const
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{
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return day;
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}
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int wxDate::GetDayOfWeek() const
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{
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return day_of_week;
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}
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int wxDate::GetYear() const
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{
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return year;
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}
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int wxDate::GetMonth() const
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{
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return month;
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}
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wxDate& wxDate::AddWeeks(int nCount)
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{
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Set(julian + (long)nCount*7);
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return *this;
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}
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wxDate& wxDate::AddMonths(int nCount)
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{
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month += nCount;
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if (month < 1) {
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month = 12;
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year--;
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}
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if (month > 12) {
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month = 1;
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year++;
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}
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mdy_to_julian();
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return *this;
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}
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wxDate& wxDate::AddYears(int nCount)
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{
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year += nCount;
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mdy_to_julian();
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return *this;
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}
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int wxDate::GetWeekOfMonth()
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{
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|
// Abs day includes the days from previous month that fills up
|
|
// the begin. of the week.
|
|
int nAbsDay = day + GetFirstDayOfMonth()-1;
|
|
return (nAbsDay-GetDayOfWeek())/7 + 1;
|
|
}
|
|
|
|
int wxDate::GetWeekOfYear()
|
|
{
|
|
wxDate doTemp(1, 1, year);
|
|
return (int)(((julian - doTemp.julian+1)/7) + 1);
|
|
}
|
|
|
|
wxDate wxDate::GetMonthStart()
|
|
{
|
|
return(wxDate(month, 1, year));
|
|
}
|
|
|
|
wxDate wxDate::GetMonthEnd()
|
|
{
|
|
return(wxDate(month+1, 1, year)-1);
|
|
}
|
|
|
|
wxDate wxDate::GetYearStart()
|
|
{
|
|
return(wxDate(1, 1, year));
|
|
}
|
|
|
|
wxDate wxDate::GetYearEnd()
|
|
{
|
|
return(wxDate(1, 1, year+1)-1);
|
|
}
|
|
|
|
wxString wxDate::GetMonthName()
|
|
{
|
|
return(FormatDate(wxMONTH));
|
|
}
|
|
|
|
wxString wxDate::GetDayOfWeekName()
|
|
{
|
|
return(FormatDate(wxDAY));
|
|
}
|
|
|
|
bool wxDate::IsBetween(const wxDate& first, const wxDate& second) const
|
|
{
|
|
return (julian >= first.julian && julian <= second.julian);
|
|
}
|
|
|
|
// This function is from NIHCL
|
|
wxDate wxDate::Previous(int dayOfWeek) const
|
|
{
|
|
int this_day_Of_Week, desired_day_Of_Week;
|
|
long j;
|
|
|
|
// Set the desired and current day of week to start at 0 (Monday)
|
|
// and end at 6 (Sunday).
|
|
|
|
desired_day_Of_Week = dayOfWeek - 1; // These functions return a value
|
|
this_day_Of_Week = GetDayOfWeek() - 1; // from 1-7. Subtract 1 for 0-6.
|
|
j = julian;
|
|
|
|
// Have to determine how many days difference from current day back to
|
|
// desired, if any. Special calculation under the 'if' statement to
|
|
// effect the wraparound counting from Monday (0) back to Sunday (6).
|
|
|
|
if (desired_day_Of_Week > this_day_Of_Week)
|
|
this_day_Of_Week += 7 - desired_day_Of_Week;
|
|
else
|
|
this_day_Of_Week -= desired_day_Of_Week;
|
|
j -= this_day_Of_Week; // Adjust j to set it at the desired day of week.
|
|
return wxDate(j);
|
|
}
|
|
|
|
#endif
|