60e9a0e663
* src/rdd/dbfnsx/dbfnsx1.c
* src/rtl/dates.c
* src/rtl/hbtoken.c
! pacified few stupid warnings
641 lines
19 KiB
C
641 lines
19 KiB
C
/*
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* The Date API (C level)
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*
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* Copyright 1999 David G. Holm <dholm@jsd-llc.com>
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* Copyright 2009 Przemyslaw Czerpak <druzus / at / priv.onet.pl> (hb_timeFormat(), hb_timeUnformat(), hb_timeStampFormat(), hb_timeStampUnformat())
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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 by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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 License
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* along with this program; see the file LICENSE.txt. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA (or visit https://www.gnu.org/licenses/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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#include "hbapi.h"
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#include "hbdate.h"
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#include "hbset.h"
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char * hb_dateFormat( 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 format_count, digit_count, size;
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HB_TRACE( HB_TR_DEBUG, ( "hb_dateFormat(%s, %p, %s)", szDate, ( void * ) szFormattedDate, szDateFormat ) );
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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 = ( int ) strlen( szDateFormat );
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if( size > 10 )
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size = 10;
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if( szDate && strlen( szDate ) == 8 ) /* A valid date is always 8 characters */
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{
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const char * szPtr;
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HB_BOOL used_d, used_m, used_y;
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format_count = 0;
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used_d = used_m = used_y = HB_FALSE;
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szPtr = szDateFormat;
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while( format_count < size )
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{
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int digit = HB_TOUPPER( ( HB_UCHAR ) *szPtr );
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szPtr++;
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digit_count = 1;
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while( ( int ) HB_TOUPPER( ( HB_UCHAR ) *szPtr ) == digit && format_count < size )
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{
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szPtr++;
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if( format_count + digit_count < size )
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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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#if 0
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szFormattedDate[ format_count++ ] = '0';
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#endif
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szFormattedDate[ format_count++ ] = szDate[ 6 ];
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digit_count--;
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}
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/* fallthrough */
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case 3:
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if( ! used_d && format_count < size )
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{
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#if 0
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szFormattedDate[ format_count++ ] = '0';
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#endif
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szFormattedDate[ format_count++ ] = szDate[ 6 ];
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digit_count--;
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}
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/* fallthrough */
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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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/* fallthrough */
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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 )
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szFormattedDate[ format_count++ ] = ( char ) digit;
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}
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used_d = HB_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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#if 0
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szFormattedDate[ format_count++ ] = '0';
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#endif
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szFormattedDate[ format_count++ ] = szDate[ 4 ];
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digit_count--;
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}
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/* fallthrough */
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case 3:
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if( ! used_m && format_count < size )
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{
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#if 0
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szFormattedDate[ format_count++ ] = '0';
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#endif
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szFormattedDate[ format_count++ ] = szDate[ 4 ];
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digit_count--;
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}
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/* fallthrough */
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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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/* fallthrough */
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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 )
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szFormattedDate[ format_count++ ] = ( char ) digit;
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}
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used_m = HB_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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/* fallthrough */
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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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/* fallthrough */
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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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/* fallthrough */
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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 )
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szFormattedDate[ format_count++ ] = ( char ) digit;
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}
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used_y = HB_TRUE;
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break;
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default:
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while( digit_count-- > 0 && format_count < size )
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szFormattedDate[ format_count++ ] = ( char ) 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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hb_strncpy( szFormattedDate, szDateFormat, size );
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for( digit_count = 0; digit_count < size; digit_count++ )
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{
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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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}
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szFormattedDate[ format_count ] = '\0';
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return szFormattedDate;
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}
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static int hb_dateUnformatRaw( const char * szDate, const char * szDateFormat, long * plDate )
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{
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int d_value = 0, m_value = 0, y_value = 0;
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int iSize = 0;
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HB_TRACE( HB_TR_DEBUG, ( "hb_dateUnformatRaw(%s, %s, %p)", szDate, szDateFormat, ( void * ) plDate ) );
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if( szDate )
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{
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int d_pos = 0, m_pos = 0, y_pos = 0;
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int count, digit, non_digit, size, used;
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if( ! szDateFormat )
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szDateFormat = hb_setGetDateFormat();
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size = ( int ) strlen( szDateFormat );
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for( count = used = 0; count < size && used < 3; count++ )
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{
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switch( szDateFormat[ 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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++used;
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if( m_pos == 0 && y_pos == 0 )
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d_pos = 1;
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else if( m_pos == 0 || y_pos == 0 )
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d_pos = 2;
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else
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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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++used;
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if( d_pos == 0 && y_pos == 0 )
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m_pos = 1;
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else if( d_pos == 0 || y_pos == 0 )
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m_pos = 2;
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else
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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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++used;
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if( m_pos == 0 && d_pos == 0 )
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y_pos = 1;
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else if( m_pos == 0 || d_pos == 0 )
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y_pos = 2;
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else
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y_pos = 3;
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}
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}
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}
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/* If there are non-digits at the start of the date field,
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they are not to be treated as date field separators */
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non_digit = 1;
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size = ( int ) strlen( szDate );
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for( count = used = 0; count < size; count++ )
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{
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digit = szDate[ count ];
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if( HB_ISDIGIT( digit ) )
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{
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/* Process the digit for the current date field */
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if( d_pos == 1 )
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d_value = ( d_value * 10 ) + digit - '0';
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else if( m_pos == 1 )
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m_value = ( m_value * 10 ) + digit - '0';
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else if( y_pos == 1 )
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y_value = ( y_value * 10 ) + digit - '0';
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/* Treat the next non-digit as a date field separator */
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non_digit = 0;
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}
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else
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{
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/* Process the non-digit */
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if( non_digit == 0 )
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{
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/* Only move to the next date field on the first
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consecutive non-digit that is encountered */
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non_digit = 1;
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d_pos--;
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m_pos--;
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y_pos--;
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if( ++used >= 3 )
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break;
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}
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}
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}
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iSize = count;
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y_value = hb_setUpdateEpoch( y_value );
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}
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*plDate = hb_dateEncode( y_value, m_value, d_value );
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return iSize;
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}
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long hb_dateUnformat( const char * szDate, const char * szDateFormat )
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{
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long lDate;
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HB_TRACE( HB_TR_DEBUG, ( "hb_dateFormat(%s, %s)", szDate, szDateFormat ) );
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hb_dateUnformatRaw( szDate, szDateFormat, &lDate );
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return lDate;
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}
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/* time modifiers:
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* H - hour
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* M - minutes
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* S - seconds
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* F - fractional part of seconds
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* P - PM/AM marker
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* maximal size of time pattern:
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* 16 for "hh:mm:ss:ffff pp"
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* always safe buffer size is 17 (+1 for 0)
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*/
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char * hb_timeFormat( char * szBuffer, const char * szTimeFormat, long lMilliSec )
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{
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char * szTimeBuffer;
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int iHour, iMinutes, iSeconds, iMSec, iPM, i12;
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int size, i, value, digits, skip;
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HB_TRACE( HB_TR_DEBUG, ( "hb_timeFormat(%p, %s, %ld)", ( void * ) szBuffer, szTimeFormat, lMilliSec ) );
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hb_timeDecode( lMilliSec, &iHour, &iMinutes, &iSeconds, &iMSec );
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szTimeBuffer = szBuffer;
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size = ( int ) hb_strnlen( szTimeFormat, 16 );
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iPM = i12 = 0;
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for( i = 0; i < size; ++i )
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{
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if( HB_TOUPPER( szTimeFormat[ i ] ) == 'P' )
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{
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if( iHour >= 12 )
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{
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iPM = 1;
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iHour -= 12;
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}
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if( iHour == 0 )
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iHour += 12;
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if( iHour < 10 )
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i12 = 1;
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break;
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}
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}
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i = 0;
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while( i < size )
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{
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int count = -i;
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int ch = HB_TOUPPER( szTimeFormat[ i ] );
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++i;
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while( ch == ( int ) HB_TOUPPER( szTimeFormat[ i ] ) && i < size )
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++i;
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count += i;
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switch( ch )
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{
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case 'H':
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value = iHour;
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if( count == 2 && value >= 0 )
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{
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if( i12 )
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{
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*szTimeBuffer++ = ' ';
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--count;
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}
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digits = count;
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}
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else
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digits = 1;
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iHour = -1;
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break;
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case 'M':
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value = iMinutes;
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iMinutes = -1;
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digits = count > 2 ? 1 : count;
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break;
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case 'S':
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value = iSeconds;
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iSeconds = -1;
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digits = count > 2 ? 1 : count;
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break;
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case 'F':
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value = iMSec;
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iMSec = -1;
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digits = count > 4 ? 1 : count;
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switch( digits )
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{
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case 4:
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value *= 10;
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break;
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case 2:
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value = ( value + 5 ) / 10;
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break;
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case 1:
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value = ( value + 50 ) / 100;
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break;
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}
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break;
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case 'P':
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if( iPM >= 0 )
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{
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*szTimeBuffer++ = iPM ? 'P' : 'A';
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if( --count )
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{
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*szTimeBuffer++ = 'M';
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--count;
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}
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iPM = -1;
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}
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/* fallthrough */
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default:
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digits = value = 0;
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}
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if( digits && value >= 0 )
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{
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skip = digits;
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count -= digits;
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do
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{
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szTimeBuffer[ --digits ] = ( char ) ( '0' + value % 10 );
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value /= 10;
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}
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while( digits );
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szTimeBuffer += skip;
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}
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while( count-- )
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*szTimeBuffer++ = ( char ) ch;
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}
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*szTimeBuffer = '\0';
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return szBuffer;
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}
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/*
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* maximal size of time pattern:
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* 16 for "hh:mm:ss:ffff pp"
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* total maximal size of formatted timestamp value: 10 + 16 = 26
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* always safe buffer size is: 27
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*/
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char * hb_timeStampFormat( char * szBuffer,
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const char * szDateFormat, const char * szTimeFormat,
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long lJulian, long lMilliSec )
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{
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char szDate[ 9 ], * szTimeBuffer;
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HB_TRACE( HB_TR_DEBUG, ( "hb_timeStampFormat(%p, %s, %s, %ld, %ld)", ( void * ) szBuffer, szDateFormat, szTimeFormat, lJulian, lMilliSec ) );
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hb_dateDecStr( szDate, lJulian );
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hb_dateFormat( szDate, szBuffer, szDateFormat );
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szTimeBuffer = szBuffer + strlen( szBuffer );
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if( *szBuffer )
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*szTimeBuffer++ = ' ';
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hb_timeFormat( szTimeBuffer, szTimeFormat, lMilliSec );
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return szBuffer;
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}
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long hb_timeUnformat( const char * szTime, const char * szTimeFormat )
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{
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int iHour, iMinutes, iSeconds, iMSec, iPM;
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int size, i, count, prec, * pValue;
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HB_TRACE( HB_TR_DEBUG, ( "hb_timeUnformat(%s, %s)", szTime, szTimeFormat ) );
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if( ! szTime )
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return 0;
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if( ! szTimeFormat )
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szTimeFormat = hb_setGetTimeFormat();
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size = ( int ) hb_strnlen( szTime, hb_strnlen( szTimeFormat, 16 ) );
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iHour = iMinutes = iSeconds = iMSec = iPM = -1;
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prec = 0;
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for( i = count = 0; i < size && szTime[ count ]; ++i )
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{
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switch( szTimeFormat[ i ] )
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{
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case 'H':
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case 'h':
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pValue = &iHour;
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break;
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case 'M':
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case 'm':
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pValue = &iMinutes;
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break;
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case 'S':
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case 's':
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pValue = &iSeconds;
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break;
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case 'F':
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case 'f':
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pValue = &iMSec;
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break;
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|
case 'P':
|
|
case 'p':
|
|
if( iPM < 0 )
|
|
{
|
|
while( szTime[ count ] && ! HB_ISDIGIT( szTime[ count ] ) &&
|
|
szTime[ count ] != 'P' && szTime[ count ] != 'p' &&
|
|
szTime[ count ] != 'A' && szTime[ count ] != 'a' )
|
|
++count;
|
|
if ( szTime[ count ] == 'P' || szTime[ count ] == 'p' )
|
|
iPM = 1;
|
|
else if( szTime[ count ] == 'A' || szTime[ count ] == 'a' )
|
|
iPM = 0;
|
|
}
|
|
/* fallthrough */
|
|
default:
|
|
pValue = NULL;
|
|
}
|
|
if( pValue && *pValue < 0 )
|
|
{
|
|
*pValue = 0;
|
|
while( szTime[ count ] && ! HB_ISDIGIT( szTime[ count ] ) )
|
|
++count;
|
|
while( HB_ISDIGIT( szTime[ count ] ) )
|
|
{
|
|
*pValue = *pValue * 10 + ( szTime[ count ] - '0' );
|
|
++count;
|
|
if( pValue == &iMSec )
|
|
++prec;
|
|
}
|
|
}
|
|
}
|
|
if( iHour < 0 )
|
|
iHour = 0;
|
|
if( iMinutes < 0 )
|
|
iMinutes = 0;
|
|
if( iSeconds < 0 )
|
|
iSeconds = 0;
|
|
if( iMSec < 0 )
|
|
iMSec = 0;
|
|
else if( iMSec > 0 )
|
|
{
|
|
if( prec > 3 )
|
|
{
|
|
do
|
|
{
|
|
iMSec /= 10;
|
|
}
|
|
while( --prec > 3 );
|
|
}
|
|
else
|
|
{
|
|
while( prec++ < 3 )
|
|
iMSec *= 10;
|
|
}
|
|
}
|
|
if( iPM > 0 )
|
|
{
|
|
if( iHour == 0 )
|
|
iHour = 24; /* wrong time */
|
|
else if( iHour != 12 )
|
|
iHour += 12;
|
|
}
|
|
else if( iPM == 0 )
|
|
{
|
|
if( iHour == 0 )
|
|
iHour = 24; /* wrong time */
|
|
else if( iHour == 12 )
|
|
iHour = 0;
|
|
}
|
|
|
|
return hb_timeEncode( iHour, iMinutes, iSeconds, iMSec );
|
|
}
|
|
|
|
void hb_timeStampUnformat( const char * szDateTime,
|
|
const char * szDateFormat, const char * szTimeFormat,
|
|
long * plJulian, long * plMilliSec )
|
|
{
|
|
HB_TRACE( HB_TR_DEBUG, ( "hb_timeStampUnformat(%s, %s, %s, %p, %p)", szDateTime, szDateFormat, szTimeFormat, ( void * ) plJulian, ( void * ) plMilliSec ) );
|
|
|
|
if( szDateTime )
|
|
{
|
|
int size;
|
|
|
|
if( ! szDateFormat )
|
|
szDateFormat = hb_setGetDateFormat();
|
|
size = hb_dateUnformatRaw( szDateTime, szDateFormat, plJulian );
|
|
*plMilliSec = hb_timeUnformat( szDateTime + size, szTimeFormat );
|
|
}
|
|
else
|
|
*plJulian = *plMilliSec = 0;
|
|
}
|