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55 lines
1.3 KiB
Plaintext
55 lines
1.3 KiB
Plaintext
/*
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* Author....: Jo W. French dba Practical Computing
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* CIS ID....: 74731,1751
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*
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* The functions contained herein are the original work of Jo W. French
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* and are placed in the public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.3 28 Sep 1992 00:39:04 GLENN
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* Jo French cleaned up.
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*
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* Rev 1.2 15 Aug 1991 23:03:58 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.1 14 Jun 1991 19:52:14 GLENN
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* Minor edit to file header
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*
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* Rev 1.0 01 Apr 1991 01:01:38 GLENN
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* Nanforum Toolkit
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*
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*/
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FUNCTION ft_MAdd( dGivenDate, nAddMonths, lMakeEOM )
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LOCAL nAdjDay, dTemp, i
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hb_default( @dGivenDate, Date() )
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hb_default( @nAddMonths, 0 )
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hb_default( @lMakeEOM, .F. )
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nAdjDay := Day( dGivenDate ) - 1
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/* If givendate is end of month and lMakeEom, then force EOM.*/
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lMakeEom := ( lMakeEom .AND. dGivenDate == dGivenDate - nAdjDay + 31 - ;
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Day( dGivenDate - nAdjDay + 31 ) )
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dTemp := dGivenDate - nAdjDay // first of month
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/* Work with 1st of months.*/
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FOR i := 1 TO Abs( nAddMonths )
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dTemp += iif( nAddMonths > 0, 31, -1 )
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dTemp += 1 - Day( dTemp )
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NEXT
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IF lMakeEom
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dTemp += 31 - Day( dTemp + 31 )
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ELSE
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dTemp := Min( dTemp + nAdjday, ( dTemp += 31 - Day( dTemp + 31 ) ) )
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ENDIF
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RETURN dTemp
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