700 lines
19 KiB
C
700 lines
19 KiB
C
/*
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* $Id$
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*/
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/* Harbour Project source code
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* http://www.Harbour-Project.org/
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*
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* Copyright(C) 1999 by Antonio Linares.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this program; if not, write to:
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*
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* The Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* You can contact me at: alinares@fivetech.com
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*
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* The following functions are Copyright 1999 David G. Holm <dholm@jsd-llc.com>:
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* HB_CTOD(), HB_DATE(), hb_dtoc().
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* See doc/hdr_tpl.txt, Version 1.2 or later, for licensing terms.
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*
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* The following functions are Copyright 1999 Jose Lalin <dezac@corevia.com>:
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* hb__seconds(), HB_SECONDS(), hb_cmonth(), HB_CMONTH(),
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* hb_cdow(), HB_CDOW(), HB_DAY(), HB_MONTH(), HB_YEAR(),
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* hb_dow(), HB_DOW()
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*/
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#include "hbsetup.h"
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#include "extend.h"
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#include "init.h"
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#include "errorapi.h"
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#include "itemapi.h"
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#include "set.h"
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#include "dates.h"
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#include <ctype.h>
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#include <time.h>
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#if defined(__TURBOC__) || defined(__BORLANDC__) || defined(__DJGPP__)
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#include <dos.h>
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#endif
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#if defined( _MSC_VER )
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#include <sys\timeb.h>
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#endif
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#ifndef HARBOUR_STRICT_CLIPPER_COMPATIBILITY
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#define HB_OPTIMIZE_DTOS
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#endif
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HARBOUR HB_CDOW( void );
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HARBOUR HB_CMONTH( void );
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HARBOUR HB_CTOD( void );
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HARBOUR HB_DATE( void );
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HARBOUR HB_DAY( void );
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HARBOUR HB_DOW( void );
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HARBOUR HB_DTOC( void );
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HARBOUR HB_DTOS( void );
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HARBOUR HB_MONTH( void );
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HARBOUR HB_SECONDS( void );
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HARBOUR HB_STOD( void );
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HARBOUR HB_TIME( void );
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HARBOUR HB_YEAR( void );
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HB_INIT_SYMBOLS_BEGIN( Dates__InitSymbols )
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{ "STOD", FS_PUBLIC, HB_STOD, 0 }
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HB_INIT_SYMBOLS_END( Dates__InitSymbols );
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#if ! defined(__GNUC__)
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#pragma startup Dates__InitSymbols
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#endif
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/* The other functions are pulled in automatically by initsymb.c */
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double hb__seconds( void )
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{
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#if defined(__TURBOC__) || defined(__BORLANDC__) || defined(__DJGPP__) /* || defined(_MSC_VER) */
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struct time t;
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gettime( &t );
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return( ( ( t.ti_hour * 3600 ) + ( t.ti_min * 60 ) + t.ti_sec ) + (double)t.ti_hund /100 );
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#elif defined(_MSC_VER)
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struct _timeb tb;
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struct tm *oTime;
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_ftime( &tb );
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oTime = localtime(&tb.time);
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return( ( oTime->tm_hour * 3600 ) +
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( oTime->tm_min * 60 ) +
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oTime->tm_sec +
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( (double) tb.millitm /1000 ) );
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#else
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time_t t;
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struct tm *oTime;
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time(&t);
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oTime = localtime(&t);
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return( ( oTime->tm_hour * 3600 ) + ( oTime->tm_min * 60 ) + oTime->tm_sec );
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#endif
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}
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char *hb_cmonth( int month )
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{
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if( month >= 1 && month <= 12 )
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return hb_monthsname[ month - 1 ];
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return "";
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}
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char *hb_cdow( int day )
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{
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if( day >= 1 && day <= 7 )
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return hb_daysname[ day - 1 ];
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return "";
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}
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long hb_dateEncode( long lDay, long lMonth, long lYear )
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{
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BOOL bValid = FALSE;
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long lFactor = ( lMonth < 3 ) ? -1: 0;
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/* Perform date validation */
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if (lMonth >= 1 && lMonth <= 12 && lDay >= 1
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&& lYear >= 1 && lYear <= 2999)
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{
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/* Month, year, and lower day limits are simple,
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but upper day limit is dependent upon month and leap year */
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int aiDayLimit [12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
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if( (( lYear % 4 == 0 && lYear % 100 != 0 ) || lYear % 400 == 0 ) )
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aiDayLimit[ 1 ] = 29;
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if( lDay <= (long)aiDayLimit[ (int)lMonth - 1 ] ) bValid = TRUE;
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}
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if( bValid )
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return ( 1461 * ( lFactor + 4800 + lYear ) / 4 ) +
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( ( lMonth - 2 - ( lFactor * 12 ) ) * 367 ) / 12 -
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( 3 * ( ( lYear + 4900 + lFactor ) / 100 ) / 4 ) +
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lDay - 32075;
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else return ( 0 );
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}
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void hb_dateDecode( long julian, long * plDay, long * plMonth, long * plYear )
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{
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long U, V, W, X;
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if( julian > 0 )
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{
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julian += 68569;
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W = ( julian * 4 ) / 146097;
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julian -= ( ( 146097 * W ) + 3 ) / 4;
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X = 4000 * ( julian + 1 ) / 1461001;
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julian -= ( ( 1461 * X ) / 4 ) - 31;
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V = 80 * julian / 2447;
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U = V / 11;
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if( plDay ) * plDay = julian - ( 2447 * V / 80 );
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if( plMonth ) * plMonth = V + 2 - ( U * 12 );
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if( plYear ) * plYear = X + U + ( W - 49 ) * 100;
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}
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else
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{
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* plDay = 0;
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* plMonth = 0;
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* plYear = 0;
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}
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}
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void hb_dateStrPut( char * szDate, long lDay, long lMonth, long lYear )
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{
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szDate[ 0 ] = ( lYear / 1000 ) + '0';
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szDate[ 1 ] = ( ( lYear % 1000 ) / 100 ) + '0';
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szDate[ 2 ] = ( ( lYear % 100 ) / 10 ) + '0';
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szDate[ 3 ] = ( lYear % 10 ) + '0';
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szDate[ 4 ] = ( lMonth / 10 ) + '0';
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szDate[ 5 ] = ( lMonth % 10 ) + '0';
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szDate[ 6 ] = ( lDay / 10 ) + '0';
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szDate[ 7 ] = ( lDay % 10 ) + '0';
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}
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void hb_dateStrGet( char * szDate, long * plDay, long * plMonth, long * plYear )
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{
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if( szDate && strlen( szDate ) == 8 )
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{
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/* Date string has correct length, so attempt to convert */
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*plDay = ( ( szDate[ 6 ] - '0' ) * 10 ) + ( szDate[ 7 ] - '0' );
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*plMonth = ( ( szDate[ 4 ] - '0' ) * 10 ) + ( szDate[ 5 ] - '0' );
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*plYear = ( ( szDate[ 0 ] - '0' ) * 1000 ) + ( ( szDate[ 1 ] - '0' ) * 100 ) +
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( ( szDate[ 2 ] - '0' ) * 10 ) + ( szDate[ 3 ] - '0' );
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}
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else *plDay = *plMonth = *plYear = 0; /* Date string missing or bad length,
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so force an empty date */
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}
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HARBOUR HB_CTOD( void )
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{
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char * szDate = hb_parc( 1 );
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int d_value = 0, m_value = 0, y_value = 0;
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int d_pos = 0, m_pos = 0, y_pos = 0;
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int count, digit, size = strlen (hb_set.HB_SET_DATEFORMAT);
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char szDateFormat[ 9 ];
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if( szDate )
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{
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for( count = 0; count < size; count++)
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{
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switch (hb_set.HB_SET_DATEFORMAT [count])
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{
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case 'D':
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case 'd':
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if (d_pos == 0)
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{
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if (m_pos == 0 && y_pos == 0) d_pos = 1;
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else if (m_pos == 0 || y_pos == 0) d_pos = 2;
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else d_pos = 3;
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}
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break;
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case 'M':
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case 'm':
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if (m_pos == 0)
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{
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if (d_pos == 0 && y_pos == 0) m_pos = 1;
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else if (d_pos == 0 || y_pos == 0) m_pos = 2;
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else m_pos = 3;
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}
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break;
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case 'Y':
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case 'y':
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if (y_pos == 0)
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{
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if (m_pos == 0 && d_pos == 0) y_pos = 1;
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else if (m_pos == 0 || d_pos == 0) y_pos = 2;
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else y_pos = 3;
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}
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}
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}
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size = strlen (szDate);
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for( count = 0; count < size; count++)
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{
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digit = szDate [count];
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if (isdigit (digit))
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{
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if (d_pos == 1)
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{
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d_value = (d_value * 10) + digit - '0';
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}
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else if (m_pos == 1)
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{
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m_value = (m_value * 10) + digit - '0';
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}
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else if (y_pos == 1)
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{
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y_value = (y_value * 10) + digit - '0';
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}
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}
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else if( digit != ' ' )
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{
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d_pos--;
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m_pos--;
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y_pos--;
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}
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}
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if (y_value > 0 && y_value < 100)
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{
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count = hb_set.HB_SET_EPOCH % 100;
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digit = hb_set.HB_SET_EPOCH / 100;
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if (y_value >= count) y_value += (digit * 100);
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else y_value += ((digit * 100) + 100);
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}
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}
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sprintf (szDateFormat, "%04i%02i%02i", y_value, m_value, d_value);
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hb_retds( szDateFormat );
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}
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char * hb_dtoc (const char * szDate, char * szFormattedDate, const char * szDateFormat)
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{
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/*
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* NOTE: szFormattedDate must point to a buffer of at least 11 bytes.
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* szDateFormat must point to a buffer holding the date format to use.
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*/
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int digit, digit_count, format_count, size;
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BOOL used_d, used_m, used_y;
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const char *szPtr;
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/*
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* Determine the maximum size of the formatted date string
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*/
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size = strlen (szDateFormat);
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if (size > 10) size = 10;
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if( szDate && szFormattedDate && strlen( szDate ) == 8 ) /* A valid date is always 8 characters */
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{
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format_count = 0;
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used_d = used_m = used_y = FALSE;
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szPtr = szDateFormat;
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while (format_count < size)
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{
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digit = toupper (*szPtr);
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szPtr++;
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digit_count = 1;
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while (toupper (*szPtr) == digit && format_count < size)
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{
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szPtr++;
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if (format_count + digit_count < size) digit_count++;
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}
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switch (digit)
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{
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case 'D':
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switch (digit_count)
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{
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case 4:
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if (!used_d && format_count < size)
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{
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szFormattedDate [format_count++] = '0';
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digit_count--;
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}
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case 3:
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if (!used_d && format_count < size)
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{
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szFormattedDate [format_count++] = '0';
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digit_count--;
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}
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case 2:
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if (!used_d && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [6];
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digit_count--;
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}
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default:
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if (!used_d && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [7];
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digit_count--;
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}
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while (digit_count-- > 0 && format_count < size) szFormattedDate [format_count++] = digit;
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}
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used_d = TRUE;
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break;
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case 'M':
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switch (digit_count)
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{
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case 4:
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if (!used_m && format_count < size)
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{
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szFormattedDate [format_count++] = '0';
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digit_count--;
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}
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case 3:
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if (!used_m && format_count < size)
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{
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szFormattedDate [format_count++] = '0';
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digit_count--;
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}
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case 2:
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if (!used_m && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [4];
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digit_count--;
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}
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default:
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if (!used_m && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [5];
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digit_count--;
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}
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while (digit_count-- > 0 && format_count < size) szFormattedDate [format_count++] = digit;
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}
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used_m = TRUE;
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break;
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case 'Y':
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switch (digit_count)
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{
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case 4:
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if (!used_y && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [0];
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digit_count--;
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}
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case 3:
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if (!used_y && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [1];
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digit_count--;
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}
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case 2:
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if (!used_y && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [2];
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digit_count--;
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}
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default:
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if (!used_y && format_count < size)
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{
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szFormattedDate [format_count++] = szDate [3];
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digit_count--;
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}
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while (digit_count-- > 0 && format_count < size) szFormattedDate [format_count++] = digit;
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}
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used_y = TRUE;
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break;
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default:
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while (digit_count-- > 0 && format_count < size) szFormattedDate [format_count++] = digit;
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}
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}
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}
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else
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{
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/* Not a valid date string, so return a blank date with separators */
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format_count = size; /* size is either 8 or 10 */
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strncpy( szFormattedDate, szDateFormat, size );
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for (digit_count = 0; digit_count < size; digit_count++)
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switch (szFormattedDate [digit_count])
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{
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case 'D':
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case 'd':
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case 'M':
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case 'm':
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case 'Y':
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case 'y':
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szFormattedDate [digit_count] = ' ';
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}
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}
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szFormattedDate [format_count] = 0;
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return (szFormattedDate);
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}
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HARBOUR HB_DTOC( void )
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{
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char * szDate = hb_pards( 1 );
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char szFormatted[ 11 ];
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hb_retc( hb_dtoc( szDate, szFormatted, hb_set.HB_SET_DATEFORMAT ) );
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}
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/* QUESTION: Should we drop error checkings to make it faster ? */
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/* This function may be called many times in a real world */
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/* application, for example in index creation. */
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/* Clipper does these checks, anyway. */
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HARBOUR HB_DTOS( void )
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{
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#ifndef HB_OPTIMIZE_DTOS
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if( hb_pcount() == 1 )
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{
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if( ISDATE( 1 ) )
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{
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#endif
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hb_retc( hb_pards( 1 ) );
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#ifndef HB_OPTIMIZE_DTOS
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}
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else
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{
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hb_errorRT_BASE(EG_ARG, 1120, NULL, "DTOS");
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}
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}
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else
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{
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/* QUESTION: Clipper catches this at compile time! */
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hb_errorRT_BASE(EG_ARGCOUNT, 3000, NULL, "DTOS");
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}
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#endif
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}
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HARBOUR HB_STOD( void )
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{
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hb_retds( hb_parc(1) );
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}
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HARBOUR HB_DAY( void )
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{
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PHB_ITEM pDate = hb_param( 1, IT_DATE );
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long lDay, lMonth, lYear;
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if( pDate )
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{
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PHB_ITEM pReturn = hb_itemNew( NULL );
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hb_dateDecode( pDate->item.asDate.value, &lDay, &lMonth, &lYear );
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pReturn->type = IT_LONG;
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pReturn->item.asLong.value =lDay;
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pReturn->item.asLong.length =3;
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hb_itemReturn( pReturn );
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hb_itemRelease( pReturn );
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/*
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hb_retni( lDay );
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* It is dangerous to manipulate the stack return value directly!
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stack.Return.item.asInteger.length = 3;
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*/
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}
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else
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{
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hb_errorRT_BASE(EG_ARG, 1114, NULL, "DAY");
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}
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}
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HARBOUR HB_MONTH( void )
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{
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PHB_ITEM pDate = hb_param( 1, IT_DATE );
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long lDay, lMonth, lYear;
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if( pDate )
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{
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PHB_ITEM pReturn = hb_itemNew( NULL );
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hb_dateDecode( pDate->item.asDate.value, &lDay, &lMonth, &lYear );
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pReturn->type = IT_LONG;
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pReturn->item.asLong.value =lMonth;
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pReturn->item.asLong.length =3;
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hb_itemReturn( pReturn );
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hb_itemRelease( pReturn );
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/*
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hb_retni( lMonth );
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* It is dangerous to manipulate the stack return value directly!
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stack.Return.item.asInteger.length = 3;
|
|
*/
|
|
}
|
|
else
|
|
{
|
|
hb_errorRT_BASE(EG_ARG, 1113, NULL, "MONTH");
|
|
}
|
|
}
|
|
|
|
HARBOUR HB_YEAR( void )
|
|
{
|
|
PHB_ITEM pDate = hb_param( 1, IT_DATE );
|
|
long lDay, lMonth, lYear;
|
|
|
|
if( pDate )
|
|
{
|
|
PHB_ITEM pReturn = hb_itemNew( NULL );
|
|
|
|
hb_dateDecode( pDate->item.asDate.value, &lDay, &lMonth, &lYear );
|
|
|
|
pReturn->type = IT_LONG;
|
|
pReturn->item.asLong.value =lYear;
|
|
pReturn->item.asLong.length =5;
|
|
hb_itemReturn( pReturn );
|
|
hb_itemRelease( pReturn );
|
|
/*
|
|
hb_retni( lYear );
|
|
* It is dangerous to manipulate the stack return value directly!
|
|
stack.Return.item.asInteger.length = 5;
|
|
*/
|
|
}
|
|
else
|
|
{
|
|
hb_errorRT_BASE(EG_ARG, 1112, NULL, "YEAR");
|
|
}
|
|
}
|
|
|
|
HARBOUR HB_TIME( void )
|
|
{
|
|
if( hb_pcount() == 0 )
|
|
{
|
|
time_t t;
|
|
struct tm *oTime;
|
|
char szTime[9];
|
|
|
|
time(&t);
|
|
oTime = localtime(&t);
|
|
sprintf(szTime, "%02d:%02d:%02d", oTime->tm_hour, oTime->tm_min, oTime->tm_sec);
|
|
hb_retclen(szTime, 8);
|
|
}
|
|
else
|
|
{
|
|
hb_errorRT_BASE(EG_ARGCOUNT, 3000, NULL, "TIME");
|
|
}
|
|
}
|
|
|
|
HARBOUR HB_DATE( void )
|
|
{
|
|
if( hb_pcount() == 0 )
|
|
{
|
|
time_t t;
|
|
struct tm *oTime;
|
|
char szTime[9];
|
|
|
|
time(&t);
|
|
oTime = localtime(&t);
|
|
sprintf(szTime, "%04d%02d%02d", oTime->tm_year + 1900, oTime->tm_mon + 1, oTime->tm_mday);
|
|
hb_retds(szTime);
|
|
}
|
|
else
|
|
{
|
|
/* QUESTION: Clipper catches this at compile time! */
|
|
hb_errorRT_BASE(EG_ARGCOUNT, 3000, NULL, "DATE");
|
|
}
|
|
}
|
|
long hb_dow( long d, long m, long y )
|
|
{
|
|
|
|
if( m < 3 )
|
|
{
|
|
m += 13;
|
|
y--;
|
|
}
|
|
else
|
|
m++;
|
|
|
|
return ( ( d + 26 * m / 10 + y + y / 4 - y / 100 + y / 400 + 6 ) % 7 + 1 );
|
|
}
|
|
|
|
HARBOUR HB_DOW( void )
|
|
{
|
|
PHB_ITEM pDate = hb_param( 1, IT_DATE );
|
|
long lDay, lMonth, lYear;
|
|
|
|
if( pDate )
|
|
{
|
|
PHB_ITEM pReturn = hb_itemNew( NULL );
|
|
|
|
pReturn->type = IT_LONG;
|
|
|
|
if( pDate->item.asDate.value )
|
|
{
|
|
hb_dateDecode( pDate->item.asDate.value, &lDay, &lMonth, &lYear );
|
|
pReturn->item.asLong.value =hb_dow( lDay, lMonth, lYear );
|
|
/* hb_retni( hb_dow( lDay, lMonth, lYear ) );
|
|
*/
|
|
}
|
|
else
|
|
pReturn->item.asLong.value =0;
|
|
/* hb_retni( 0 );
|
|
*/
|
|
|
|
pReturn->item.asLong.length =3;
|
|
hb_itemReturn( pReturn );
|
|
hb_itemRelease( pReturn );
|
|
/*
|
|
stack.Return.item.asInteger.length = 3;
|
|
*/
|
|
}
|
|
else
|
|
{
|
|
hb_errorRT_BASE(EG_ARG, 1115, NULL, "DOW");
|
|
}
|
|
}
|
|
|
|
HARBOUR HB_CMONTH( void )
|
|
{
|
|
PHB_ITEM pDate = hb_param( 1, IT_DATE );
|
|
long lDay, lMonth, lYear;
|
|
|
|
if( hb_pcount() )
|
|
{
|
|
if( pDate )
|
|
{
|
|
hb_dateDecode( pDate->item.asDate.value, &lDay, &lMonth, &lYear );
|
|
hb_retc( hb_cmonth( lMonth ) );
|
|
}
|
|
else
|
|
{
|
|
hb_errorRT_BASE(EG_ARG, 1116, NULL, "CMONTH");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* QUESTION: Clipper catches this at compile time! */
|
|
hb_errorRT_BASE(EG_ARGCOUNT, 3000, NULL, "CMONTH");
|
|
}
|
|
}
|
|
|
|
HARBOUR HB_CDOW( void )
|
|
{
|
|
PHB_ITEM pDate = hb_param( 1, IT_DATE );
|
|
long lDay, lMonth, lYear;
|
|
|
|
if( hb_pcount() )
|
|
{
|
|
if( pDate )
|
|
{
|
|
hb_dateDecode( pDate->item.asDate.value, &lDay, &lMonth, &lYear );
|
|
hb_retc( hb_cdow( hb_dow( lDay, lMonth, lYear ) ) );
|
|
}
|
|
else
|
|
{
|
|
hb_errorRT_BASE(EG_ARG, 1117, NULL, "CDOW");
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* QUESTION: Clipper catches this at compile time! */
|
|
hb_errorRT_BASE(EG_ARGCOUNT, 3000, NULL, "CDOW");
|
|
}
|
|
}
|
|
|
|
HARBOUR HB_SECONDS( void )
|
|
{
|
|
if( hb_pcount() == 0 )
|
|
hb_retnd( hb__seconds() );
|
|
else
|
|
{
|
|
/* QUESTION: Clipper catches this at compile time! */
|
|
hb_errorRT_BASE(EG_ARGCOUNT, 3000, NULL, "SECONDS");
|
|
}
|
|
}
|