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- /*
- * File......: DAYOFYR.PRG
- * Author....: Jo W. French dba Practical Computing
- * CIS_ID....: 74731,1751
- * Date......: $Date: 15 Aug 1991 23:03:08 $
- * Revision..: $Revision: 1.2 $
- * Log file..: $Logfile: E:/nanfor/src/dayofyr.prv $
- *
- * The functions contained herein are the original work of Jo W. French
- * and are placed in the public domain.
- *
- * Modification history:
- * ---------------------
- *
- * $Log: E:/nanfor/src/dayofyr.prv $
- *
- * Rev 1.2 15 Aug 1991 23:03:08 GLENN
- * Forest Belt proofread/edited/cleaned up doc
- *
- * Rev 1.1 10 May 1991 23:59:38 GLENN
- * Minor adjustment to header.
- *
- * Rev 1.0 01 Apr 1991 01:01:02 GLENN
- * Nanforum Toolkit
- *
- */
-
- /* $DOC$
- * $FUNCNAME$
- * FT_DAYOFYR()
- * $CATEGORY$
- * Date/Time
- * $ONELINER$
- * Return calendar, fiscal or accounting day data
- * $SYNTAX$
- * FT_DAYOFYR( [ <dGivenDate> ], [ <nDayNum> ], [ <lIsAcct> ] )
- * -> aDateInfo
- * $ARGUMENTS$
- * <dGivenDate> is any valid date in any valid format. Defaults
- * to current system date if not supplied.
- *
- * <nDayNum> is a number from 1 to 371, signifying a day of a year.
- * Defaults to current day if not supplied.
- *
- * <lIsAcct> is a logical which specifies the type of year to base
- * the return value on: .F. = calendar or fiscal year,
- * .T. = accounting year.
- * $RETURNS$
- * A three element array containing the following data:
- *
- * If <nDayNum> is specified:
- *
- * aDateInfo[1] - The date of the specified day number
- * aDateInfo[2] - The beginning date of the year
- * aDateInfo[3] - The ending date of the year
- *
- * If <nDayNum> is not specified:
- *
- * aDateInfo[1] - The year and day as a character string "YYYYDDD"
- * aDateInfo[2] - The beginning date of the year
- * aDateInfo[3] - The ending date of the year
- * $DESCRIPTION$
- * FT_DAYOFYR() returns an array containing data about a day in the
- * calendar or fiscal year containing the given date.
- *
- * The beginning of year date defaults to January 1st but may be
- * changed with FT_DATECNFG().
- * $EXAMPLES$
- * aDateInfo := FT_DAYOFYR( CTOD("03/31/91") )
- * ? aDateInfo[1] // 1991090 (90th day of year 1991)
- * ? aDateInfo[2] // 01/01/91
- * ? aDateInfo[3] // 12/31/91
- *
- * aDateInfo := FT_DAYOFYR( , 90 ) // assume current date is 3/31/91
- * ? aDateInfo[1] // 03/31/91 (90th day of year)
- * ? aDateInfo[2] // 01/01/91
- * ? aDateInfo[3] // 12/31/91
- *
- * aDateInfo := FT_DAYOFYR( , 90, .T. )
- * ? aDateInfo[1] // 03/29/91 (90th day of accounting year)
- * ? aDateInfo[2] // 12/30/90 (1st day of accounting year)
- * ? aDateInfo[3] // 12/28/91 (last day of accounting year)
- * $SEEALSO$
- * FT_DATECNFG()
- * $END$
- */
-
- FUNCTION FT_DAYOFYR(dGivenDate,nDayNum,lIsAcct)
- LOCAL lIsDay, nTemp, aRetVal
-
- IF dGivenDate == NIL .OR. !VALTYPE(dGivenDate) $ 'NDL'
- dGivenDate := DATE()
- ELSEIF VALTYPE(dGivenDate) == 'N'
- nDayNum := dGivenDate
- dGivenDate := DATE()
- ELSEIF VALTYPE(dGivenDate) == 'L'
- lIsAcct := dGivenDate
- dGivenDate := DATE()
- ENDIF
-
- lIsDay := IF(nDayNum == NIL .OR. VALTYPE(nDayNum) != 'N', .F., .T.)
- lIsAcct := IF(lIsAcct == NIL .OR. VALTYPE(lIsAcct) != 'L', .F., lIsAcct)
-
- IF lIsAcct
- aRetVal := FT_ACCTYEAR(dGivenDate)
- ELSE
- aRetVal := FT_YEAR(dGivenDate)
- ENDIF
-
- IF lIsDay
- nTemp := aRetVal[3] - aRetVal[2] + 1
- nDayNum := IF(nDayNum > 0 .AND. nDayNum <= nTemp , nDayNum, nTemp)
- aRetVal[1] := aRetVal[2] + nDayNum - 1
- ELSE
- aRetVal[1] += PADL(LTRIM(STR( dGivenDate - aRetVal[2] + 1, 3)), 3, '0')
- ENDIF
-
- RETURN aRetVal
-