1 files changed, 74 insertions, 0 deletions
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/utils/ParsingUtils.java b/sonar-plugin-api/src/main/java/org/sonar/api/utils/ParsingUtils.java
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index 00000000000..6e154a59b0b
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+++ b/sonar-plugin-api/src/main/java/org/sonar/api/utils/ParsingUtils.java
@@ -0,0 +1,74 @@
+/*
+ * Sonar, open source software quality management tool.
+ * Copyright (C) 2009 SonarSource SA
+ * mailto:contact AT sonarsource DOT com
+ *
+ * Sonar is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * Sonar is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Sonar; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
+ */
+package org.sonar.api.utils;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.text.NumberFormat;
+import java.text.ParseException;
+import java.util.Locale;
+
+/**
+ * Utility to parse various inputs
+ *
+ * @since 1.10
+ */
+public final class ParsingUtils {
+
+  private ParsingUtils() {
+  }
+
+  /**
+   * Parses a string with a locale and returns the corresponding number
+   *
+   * @throws ParseException if number cannot be parsed
+   */
+  public static double parseNumber(String number, Locale locale) throws ParseException {
+    if ("".equals(number)) {
+      return Double.NaN;
+    }
+    return NumberFormat.getNumberInstance(locale).parse(number).doubleValue();
+  }
+
+  /**
+   * Parses a string with the default locale and returns the corresponding number
+   *
+   * @throws ParseException if number cannot be parsed
+   */
+  public static double parseNumber(String number) throws ParseException {
+    return parseNumber(number, Locale.getDefault());
+  }
+
+  /**
+   * Scales a double value, taking into account 2 decimals
+   */
+  public static double scaleValue(double value) {
+    return scaleValue(value, 2);
+  }
+
+  /**
+   * Scales a double value with decimals
+   */
+  public static double scaleValue(double value, int decimals) {
+    BigDecimal bd = BigDecimal.valueOf(value);
+    return bd.setScale(decimals, RoundingMode.HALF_UP).doubleValue();
+  }
+
+}