001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2009 SonarSource SA 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 package org.sonar.api.utils; 021 022 import java.math.BigDecimal; 023 import java.math.RoundingMode; 024 import java.text.NumberFormat; 025 import java.text.ParseException; 026 import java.util.Locale; 027 028 /** 029 * @since 1.10 030 */ 031 public final class ParsingUtils { 032 033 private ParsingUtils() { 034 } 035 036 public static double parseNumber(String number, Locale locale) throws ParseException { 037 if ("".equals(number)) { 038 return Double.NaN; 039 } 040 return NumberFormat.getNumberInstance(locale).parse(number).doubleValue(); 041 } 042 043 public static double parseNumber(String number) throws ParseException { 044 return parseNumber(number, Locale.getDefault()); 045 } 046 047 public static double scaleValue(double value) { 048 return scaleValue(value, 2); 049 } 050 051 public static double scaleValue(double value, int decimals) { 052 BigDecimal bd = BigDecimal.valueOf(value); 053 return bd.setScale(decimals, RoundingMode.HALF_UP).doubleValue(); 054 } 055 056 }