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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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http://www.apache.org/licenses/LICENSE-2.0
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package org.apache.poi.ss.formula.functions;
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.ss.formula.eval.StringEval;
import org.apache.poi.ss.formula.eval.ValueEval;
/**
* Implementation for Excel REPT () function.<p/>
* <p/>
* <b>Syntax</b>:<br/> <b>REPT </b>(<b>text</b>,<b>number_times</b> )<br/>
* <p/>
* Repeats text a given number of times. Use REPT to fill a cell with a number of instances of a text string.
*
* text : text The text that you want to repeat.
* number_times: A positive number specifying the number of times to repeat text.
*
* If number_times is 0 (zero), REPT returns "" (empty text).
* If this argument contains a decimal value, this function ignores the numbers to the right side of the decimal point.
*
* The result of the REPT function cannot be longer than 32,767 characters, or REPT returns #VALUE!.
*
* @author cedric dot walter @ gmail dot com
*/
public class Rept extends Fixed2ArgFunction {
public ValueEval evaluate(int srcRowIndex, int srcColumnIndex, ValueEval text, ValueEval number_times) {
ValueEval veText1;
try {
veText1 = OperandResolver.getSingleValue(text, srcRowIndex, srcColumnIndex);
} catch (EvaluationException e) {
return e.getErrorEval();
}
String strText1 = OperandResolver.coerceValueToString(veText1);
double numberOfTime = 0;
try {
numberOfTime = OperandResolver.coerceValueToDouble(number_times);
} catch (EvaluationException e) {
return ErrorEval.VALUE_INVALID;
}
int numberOfTimeInt = (int)numberOfTime;
StringBuffer strb = new StringBuffer(strText1.length() * numberOfTimeInt);
for(int i = 0; i < numberOfTimeInt; i++) {
strb.append(strText1);
}
if (strb.toString().length() > 32767) {
return ErrorEval.VALUE_INVALID;
}
return new StringEval(strb.toString());
}
}