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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
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package org.apache.poi.ss.formula.functions;
import java.util.Locale;
import java.text.DecimalFormatSymbols;
import org.apache.poi.ss.formula.OperationEvaluationContext;
import org.apache.poi.ss.formula.eval.ValueEval;
import org.apache.poi.ss.formula.eval.NumberEval;
import org.apache.poi.ss.formula.eval.ErrorEval;
import org.apache.poi.ss.formula.eval.EvaluationException;
import org.apache.poi.ss.formula.eval.OperandResolver;
import org.apache.poi.util.LocaleUtil;
/**
/**
* Implementation for the NUMBERVALUE() Excel function.
*
* https://support.microsoft.com/en-us/office/numbervalue-function-1b05c8cf-2bfa-4437-af70-596c7ea7d879
*/
public final class NumberValueFunction implements FreeRefFunction {
public static final FreeRefFunction instance = new NumberValueFunction();
private NumberValueFunction() {}
@Override
public ValueEval evaluate( ValueEval[] args, OperationEvaluationContext ec ) {
Locale locale = LocaleUtil.getUserLocale();
DecimalFormatSymbols decimalFormatSymbols = DecimalFormatSymbols.getInstance(locale);
String text = null;
//If the Decimal_separator and Group_separator arguments are not specified, separators from the current locale are used.
String decSep = String.valueOf(decimalFormatSymbols.getDecimalSeparator());
String groupSep = String.valueOf(decimalFormatSymbols.getGroupingSeparator());
double result = Double.NaN;
ValueEval v1 = null;
ValueEval v2 = null;
ValueEval v3 = null;
try {
if (args.length == 1) {
v1 = OperandResolver.getSingleValue( args[0], ec.getRowIndex(), ec.getColumnIndex());
text = OperandResolver.coerceValueToString(v1);
} else if (args.length == 2) {
v1 = OperandResolver.getSingleValue( args[0], ec.getRowIndex(), ec.getColumnIndex());
v2 = OperandResolver.getSingleValue( args[1], ec.getRowIndex(), ec.getColumnIndex());
text = OperandResolver.coerceValueToString(v1);
decSep = OperandResolver.coerceValueToString(v2).substring(0, 1); //If multiple characters are used in the Decimal_separator or Group_separator arguments, only the first character is used.
} else if (args.length == 3) {
v1 = OperandResolver.getSingleValue( args[0], ec.getRowIndex(), ec.getColumnIndex());
v2 = OperandResolver.getSingleValue( args[1], ec.getRowIndex(), ec.getColumnIndex());
v3 = OperandResolver.getSingleValue( args[2], ec.getRowIndex(), ec.getColumnIndex());
text = OperandResolver.coerceValueToString(v1);
decSep = OperandResolver.coerceValueToString(v2).substring(0, 1); //If multiple characters are used in the Decimal_separator or Group_separator arguments, only the first character is used.
groupSep = OperandResolver.coerceValueToString(v3).substring(0, 1); //If multiple characters are used in the Decimal_separator or Group_separator arguments, only the first character is used.
}
} catch (EvaluationException e) {
return e.getErrorEval();
}
if("".equals(text) || text == null) text = "0"; //If an empty string ("") is specified as the Text argument, the result is 0.
text = text.replace(" ", ""); //Empty spaces in the Text argument are ignored, even in the middle of the argument. For example, " 3 000 " is returned as 3000.
String[] parts = text.split("["+decSep+"]");
String sigPart = "";
String decPart = "";
if (parts.length > 2) return ErrorEval.VALUE_INVALID; //If a decimal separator is used more than once in the Text argument, NUMBERVALUE returns the #VALUE! error value.
if (parts.length > 1) {
sigPart = parts[0];
decPart = parts[1];
if (decPart.contains(groupSep)) return ErrorEval.VALUE_INVALID; //If the group separator occurs after the decimal separator in the Text argument, NUMBERVALUE returns the #VALUE! error value.
sigPart = sigPart.replace(groupSep, ""); //If the group separator occurs before the decimal separator in the Text argument , the group separator is ignored.
text = sigPart + "." + decPart;
} else if (parts.length > 0) {
sigPart = parts[0];
sigPart = sigPart.replace(groupSep, ""); //If the group separator occurs before the decimal separator in the Text argument , the group separator is ignored.
text = sigPart;
}
//If the Text argument ends in one or more percent signs (%), they are used in the calculation of the result.
//Multiple percent signs are additive if they are used in the Text argument just as they are if they are used in a formula.
//For example, =NUMBERVALUE("9%%") returns the same result (0.0009) as the formula =9%%.
int countPercent = 0;
while (text.endsWith("%")) {
countPercent++;
text = text.substring(0, text.length()-1);
}
try {
result = Double.parseDouble(text);
result = result / Math.pow(100, countPercent); //If the Text argument ends in one or more percent signs (%), they are used in the calculation of the result.
checkValue(result);
} catch (EvaluationException e) {
return e.getErrorEval();
} catch (Exception e) {
return ErrorEval.VALUE_INVALID; //If any of the arguments are not valid, NUMBERVALUE returns the #VALUE! error value.
}
return new NumberEval(result);
}
private static void checkValue(double result) throws EvaluationException {
if (Double.isNaN(result) || Double.isInfinite(result)) {
throw new EvaluationException(ErrorEval.NUM_ERROR);
}
}
}