code: /*
   * 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.
   */
  /*
   * $Id$
   */
  package org.apache.xalan;
  
  /**
   * Administrative class to keep track of the version number of
   * the Xalan release.
   * <P>This class implements the upcoming standard of having
   * org.apache.project-name.Version.getVersion() be a standard way 
   * to get version information.  This class will replace the older 
   * org.apache.xalan.processor.Version class.</P>
   * <P>See also: org/apache/xalan/res/XSLTInfo.properties for 
   * information about the version of the XSLT spec we support.</P>
   * @xsl.usage general
   */
  public class Version
  {
  
    /**
     * Get the basic version string for the current Xalan release.
     * Version String formatted like 
     * <CODE>"<B>Xalan</B> <B>Java</B> v.r[.dd| <B>D</B>nn]"</CODE>.
     *
     * Futurework: have this read version info from jar manifest.
     *
     * @return String denoting our current version
     */
    public static String getVersion()
    {
       return getProduct()+" "+getImplementationLanguage()+" "
             +getMajorVersionNum()+"."+getReleaseVersionNum()+"."
             +( (getDevelopmentVersionNum() > 0) ? 
                 ("D"+getDevelopmentVersionNum()) : (""+getMaintenanceVersionNum()));  
    }
  
    /**
     * Print the processor version to the command line.
     *
     * @param argv command line arguments, unused.
     */
    public static void main(String argv[])
    {
      System.out.println(getVersion());
    }
    
    /**
     * Name of product: Xalan.
     */
    public static String getProduct()
    {
      return "Xalan";
    }
  
    /**
     * Implementation Language: Java.
     */
    public static String getImplementationLanguage()
    {
      return "Java";
    }
    
    
    /**
     * Major version number.
     * Version number. This changes only when there is a
     *          significant, externally apparent enhancement from
     *          the previous release. 'n' represents the n'th
     *          version.
     *
     *          Clients should carefully consider the implications
     *          of new versions as external interfaces and behaviour
     *          may have changed.
     */
    public static int getMajorVersionNum()
    {
      return 2;
      
    }  
  
    /**
     * Release Number.
     * Release number. This changes when:
     *            -  a new set of functionality is to be added, eg,
     *               implementation of a new W3C specification.
     *            -  API or behaviour change.
     *            -  its designated as a reference release.
     */
    public static int getReleaseVersionNum()
    {
      return 7;
    }
    
    /**
     * Maintenance Drop Number.
     * Optional identifier used to designate maintenance
     *          drop applied to a specific release and contains
     *          fixes for defects reported. It maintains compatibility
     *          with the release and contains no API changes.
     *          When missing, it designates the final and complete
     *          development drop for a release.
     */
    public static int getMaintenanceVersionNum()
    {
      return 2;
    }
  
    /**
     * Development Drop Number.
     * Optional identifier designates development drop of
     *          a specific release. D01 is the first development drop
     *          of a new release.
     *
     *          Development drops are works in progress towards a
     *          compeleted, final release. A specific development drop
     *          may not completely implement all aspects of a new
     *          feature, which may take several development drops to
     *          complete. At the point of the final drop for the
     *          release, the D suffix will be omitted.
     *
     *          Each 'D' drops can contain functional enhancements as
     *          well as defect fixes. 'D' drops may not be as stable as
     *          the final releases.
     */
    public static int getDevelopmentVersionNum()
    { 
      try {   
          if ((new String("")).length() == 0)
            return 0;
          else  
            return Integer.parseInt("");
      } catch (NumberFormatException nfe) {
             return 0;
      }    
    }      
  }
  