| /* ==================================================================== |
| 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.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; |
| StringBuilder strb = new StringBuilder(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()); |
| } |
| } |