content: /*
   *  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
   *
   *      https://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.tools.ant.taskdefs.condition;
  
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.util.DeweyDecimal;
  import org.apache.tools.ant.util.JavaEnvUtils;
  
  /**
   * An Java version condition.
   * @since Ant 1.10.2
   */
  public class JavaVersion implements Condition {
  
      private String atMost = null;
      private String atLeast = null;
      private String exactly = null;
  
      /**
       * Evaluate the condition.
       * @return true if the condition is true.
       * @throws BuildException if an error occurs.
       */
      public boolean eval() throws BuildException {
          validate();
          DeweyDecimal actual = JavaEnvUtils.getParsedJavaVersion();
          if (null != atLeast) {
              return actual.isGreaterThanOrEqual(new DeweyDecimal(atLeast));
          }
          if (null != exactly) {
              return actual.isEqual(new DeweyDecimal(exactly));
          }
          if (atMost != null) {
              return actual.isLessThanOrEqual(new DeweyDecimal(atMost));
          }
          //default
          return false;
      }
  
      private void validate() throws BuildException {
          if (atLeast != null && exactly != null && atMost != null) {
              throw new BuildException("Only one of atleast or atmost or exactly may be set.");
          }
          if (null == atLeast && null == exactly && atMost == null) {
              throw new BuildException("One of atleast or atmost or exactly must be set.");
          }
          if (atLeast != null) {
              try {
                  // only created for side effect
                  new DeweyDecimal(atLeast); //NOSONAR
              } catch (NumberFormatException e) {
                  throw new BuildException(
                      "The 'atleast' attribute is not a Dewey Decimal eg 1.1.0 : "
                      + atLeast);
              }
          } else if (atMost != null) {
              try {
                  new DeweyDecimal(atMost); //NOSONAR
              } catch (NumberFormatException e) {
                  throw new BuildException(
                          "The 'atmost' attribute is not a Dewey Decimal eg 1.1.0 : "
                                  + atMost);
              }
          } else {
              try {
                  // only created for side effect
                  new DeweyDecimal(exactly); //NOSONAR
              } catch (NumberFormatException e) {
                  throw new BuildException(
                      "The 'exactly' attribute is not a Dewey Decimal eg 1.1.0 : "
                      + exactly);
              }
          }
      }
  
      /**
       * Get the atleast attribute.
       * @return the atleast attribute.
       */
      public String getAtLeast() {
          return atLeast;
      }
  
      /**
       * Set the atleast attribute.
       * This is of the form major.minor.point.
       * For example 1.7.0.
       * @param atLeast the version to set
       */
      public void setAtLeast(String atLeast) {
          this.atLeast = atLeast;
      }
  
      /**
       * Get the atmost attribute.
       * @return the atmost attribute.
       * @since Ant 1.10.10
       */
      public String getAtMost() {
          return atMost;
      }
  
      /**
       * Set the atmost attribute.
       * This is of the form major.minor.point.
       * For example 11.0.2
       * @param atMost the version to set
       * @since Ant 1.10.10
       */
      public void setAtMost(String atMost) {
          this.atMost = atMost;
      }
  
      /**
       * Get the exactly attribute.
       * @return the exactly attribute.
       */
      public String getExactly() {
          return exactly;
      }
  
      /**
       * Set the exactly attribute.
       * This is of the form major.minor.point.
       * For example 1.7.0.
       * @param exactly the version to check against.
       */
      public void setExactly(String exactly) {
          this.exactly = exactly;
      }
  
  }
  