119 lines
5.1 KiB
Java
119 lines
5.1 KiB
Java
/* ====================================================================
|
|
Licensed to the Apache Software Foundation (ASF) under one or more
|
|
contributor license agreements. See the NOTICE file distributed with
|
|
this work for additional information regarding copyright ownership.
|
|
The ASF licenses this file to You under the Apache License, Version 2.0
|
|
(the "License"); you may not use this file except in compliance with
|
|
the License. You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
==================================================================== */
|
|
package org.apache.poi.hssf.record.formula.functions;
|
|
|
|
import java.util.Calendar;
|
|
import java.util.GregorianCalendar;
|
|
|
|
import org.apache.poi.hssf.record.formula.eval.EvaluationException;
|
|
import org.apache.poi.hssf.record.formula.eval.NumberEval;
|
|
import org.apache.poi.hssf.record.formula.eval.OperandResolver;
|
|
import org.apache.poi.hssf.record.formula.eval.ValueEval;
|
|
import org.apache.poi.ss.usermodel.DateUtil;
|
|
|
|
/**
|
|
* Calculates the number of days between two dates based on a 360-day year
|
|
* (twelve 30-day months), which is used in some accounting calculations. Use
|
|
* this function to help compute payments if your accounting system is based on
|
|
* twelve 30-day months.
|
|
*
|
|
* @author PUdalau
|
|
*/
|
|
public class Days360 extends Var2or3ArgFunction {
|
|
|
|
public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1) {
|
|
double result;
|
|
try {
|
|
double d0 = NumericFunction.singleOperandEvaluate(arg0, srcRowIndex, srcColumnIndex);
|
|
double d1 = NumericFunction.singleOperandEvaluate(arg1, srcRowIndex, srcColumnIndex);
|
|
result = evaluate(d0, d1, false);
|
|
} catch (EvaluationException e) {
|
|
return e.getErrorEval();
|
|
}
|
|
return new NumberEval(result);
|
|
}
|
|
|
|
public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1,
|
|
ValueEval arg2) {
|
|
double result;
|
|
try {
|
|
double d0 = NumericFunction.singleOperandEvaluate(arg0, srcRowIndex, srcColumnIndex);
|
|
double d1 = NumericFunction.singleOperandEvaluate(arg1, srcRowIndex, srcColumnIndex);
|
|
ValueEval ve = OperandResolver.getSingleValue(arg2, srcRowIndex, srcColumnIndex);
|
|
Boolean method = OperandResolver.coerceValueToBoolean(ve, false);
|
|
result = evaluate(d0, d1, method == null ? false : method.booleanValue());
|
|
} catch (EvaluationException e) {
|
|
return e.getErrorEval();
|
|
}
|
|
return new NumberEval(result);
|
|
}
|
|
|
|
private static double evaluate(double d0, double d1, boolean method) {
|
|
Calendar startingDate = getStartingDate(d0);
|
|
Calendar endingDate = getEndingDateAccordingToStartingDate(d1, startingDate);
|
|
long startingDay = startingDate.get(Calendar.MONTH) * 30 + startingDate.get(Calendar.DAY_OF_MONTH);
|
|
long endingDay = (endingDate.get(Calendar.YEAR) - startingDate.get(Calendar.YEAR)) * 360
|
|
+ endingDate.get(Calendar.MONTH) * 30 + endingDate.get(Calendar.DAY_OF_MONTH);
|
|
return endingDay - startingDay;
|
|
}
|
|
|
|
private static Calendar getDate(double date) {
|
|
Calendar processedDate = new GregorianCalendar();
|
|
processedDate.setTime(DateUtil.getJavaDate(date, false));
|
|
return processedDate;
|
|
}
|
|
|
|
private static Calendar getStartingDate(double date) {
|
|
Calendar startingDate = getDate(date);
|
|
if (isLastDayOfMonth(startingDate)) {
|
|
startingDate.set(Calendar.DAY_OF_MONTH, 30);
|
|
}
|
|
return startingDate;
|
|
}
|
|
|
|
private static Calendar getEndingDateAccordingToStartingDate(double date, Calendar startingDate) {
|
|
Calendar endingDate = getDate(date);
|
|
endingDate.setTime(DateUtil.getJavaDate(date, false));
|
|
if (isLastDayOfMonth(endingDate)) {
|
|
if (startingDate.get(Calendar.DATE) < 30) {
|
|
endingDate = getFirstDayOfNextMonth(endingDate);
|
|
}
|
|
}
|
|
return endingDate;
|
|
}
|
|
|
|
private static boolean isLastDayOfMonth(Calendar date) {
|
|
Calendar clone = (Calendar) date.clone();
|
|
clone.add(java.util.Calendar.MONTH, 1);
|
|
clone.add(java.util.Calendar.DAY_OF_MONTH, -1);
|
|
int lastDayOfMonth = clone.get(Calendar.DAY_OF_MONTH);
|
|
return date.get(Calendar.DAY_OF_MONTH) == lastDayOfMonth;
|
|
}
|
|
|
|
private static Calendar getFirstDayOfNextMonth(Calendar date) {
|
|
Calendar newDate = (Calendar) date.clone();
|
|
if (date.get(Calendar.MONTH) < Calendar.DECEMBER) {
|
|
newDate.set(Calendar.MONTH, date.get(Calendar.MONTH) + 1);
|
|
} else {
|
|
newDate.set(Calendar.MONTH, 1);
|
|
newDate.set(Calendar.YEAR, date.get(Calendar.YEAR) + 1);
|
|
}
|
|
newDate.set(Calendar.DATE, 1);
|
|
return newDate;
|
|
}
|
|
}
|