package org.apache.turbine.util;
   
   /*
    * 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.
   */
  
  import javax.servlet.http.HttpServletRequest;
  
  import org.apache.commons.lang.StringUtils;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  
  import org.apache.turbine.util.uri.URIConstants;
  
  /***
   * Holds basic server information under which Turbine is running.
   * This class is accessable via the RunData object within the Turbine
   * system.  You can also use it as a placeholder for this information
   * if you are only emulating a servlet system.
   *
   * @author <a href="mailto:burton@apache.org">Kevin A. Burton</a>
   * @author <a href="mailto:jon@latchkey.com">Jon S. Stevens</a>
   * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>
   * @version $Id: ServerData.java 534527 2007-05-02 16:10:59Z tv $
   */
  public class ServerData
  {
      /*** Cached serverName, */
      private String serverName = null;
  
      /*** Cached serverPort. */
      private int serverPort = 0;
  
      /*** Cached serverScheme. */
      private String serverScheme = null;
  
      /*** Cached script name. */
      private String  scriptName = null;
  
      /*** Cached context path. */
      private String  contextPath = null;
  
      /*** Logging */
      private static Log log = LogFactory.getLog(ServerData.class);
  
      /***
       * Constructor.
       *
       * @param serverName The server name.
       * @param serverPort The server port.
       * @param serverScheme The server scheme.
       * @param scriptName The script name.
       * @param contextPath The context Path
       */
      public ServerData(String serverName,
          int serverPort,
          String serverScheme,
          String scriptName,
          String contextPath)
      {
          if (log.isDebugEnabled())
          {
              StringBuffer sb = new StringBuffer();
              sb.append("Constructor(");
              sb.append(serverName);
              sb.append(", ");
              sb.append(serverPort);
              sb.append(", ");
              sb.append(serverScheme);
              sb.append(", ");
              sb.append(scriptName);
              sb.append(", ");
              sb.append(contextPath);
              sb.append(")");
              log.debug(sb.toString());
          }
  
          setServerName(serverName);
          setServerPort(serverPort);
          setServerScheme(serverScheme);
          setScriptName(scriptName);
          setContextPath(contextPath);
      }
 
     /***
      * Copy-Constructor
      *
      * @param serverData A ServerData Object
      */
     public ServerData(ServerData serverData)
     {
         log.debug("Copy Constructor(" + serverData + ")");
 
         setServerName(serverData.getServerName());
         setServerPort(serverData.getServerPort());
         setServerScheme(serverData.getServerScheme());
         setScriptName(serverData.getScriptName());
         setContextPath(serverData.getContextPath());
     }
 
     /***
      * A C'tor that takes a HTTP Request object and
      * builds the server data from its contents
      *
      * @param req The HTTP Request
      */
     public ServerData(HttpServletRequest req)
     {
         setServerName(req.getServerName());
         setServerPort(req.getServerPort());
         setServerScheme(req.getScheme());
         setScriptName(req.getServletPath());
         setContextPath(req.getContextPath());
     }
 
     /***
      * generates a new Object with the same values as this one.
      *
      * @return A cloned object.
      */
     public Object clone()
     {
         log.debug("clone()");
         return new ServerData(this);
     }
 
     /***
      * Get the name of the server.
      *
      * @return A String.
      */
     public String getServerName()
     {
         return StringUtils.isEmpty(serverName) ? "" : serverName;
     }
 
     /***
      * Sets the cached serverName.
      *
      * @param serverName the server name.
      */
     public void setServerName(String serverName)
     {
         log.debug("setServerName(" + serverName + ")");
         this.serverName = serverName;
     }
 
     /***
      * Get the server port.
      *
      * @return the server port.
      */
     public int getServerPort()
     {
         return this.serverPort;
     }
 
     /***
      * Sets the cached serverPort.
      *
      * @param serverPort the server port.
      */
     public void setServerPort(int serverPort)
     {
         log.debug("setServerPort(" + serverPort + ")");
         this.serverPort = serverPort;
     }
 
     /***
      * Get the server scheme.
      *
      * @return the server scheme.
      */
     public String getServerScheme()
     {
         return StringUtils.isEmpty(serverScheme) ? "" : serverScheme;
     }
 
     /***
      * Sets the cached serverScheme.
      *
      * @param serverScheme the server scheme.
      */
     public void setServerScheme(String serverScheme)
     {
         log.debug("setServerScheme(" + serverScheme + ")");
         this.serverScheme = serverScheme;
     }
 
     /***
      * Get the script name
      *
      * @return the script name.
      */
     public String getScriptName()
     {
         return StringUtils.isEmpty(scriptName) ? "" : scriptName;
     }
 
     /***
      * Set the script name.
      *
      * @param scriptName the script name.
      */
     public void setScriptName(String scriptName)
     {
         log.debug("setScriptName(" + scriptName + ")");
         this.scriptName = scriptName;
     }
 
     /***
      * Get the context path.
      *
      * @return the context path.
      */
     public String getContextPath()
     {
         return StringUtils.isEmpty(contextPath) ? "" : contextPath;
     }
 
     /***
      * Set the context path.
      *
      * @param contextPath A String.
      */
     public void setContextPath(String contextPath)
     {
         log.debug("setContextPath(" + contextPath + ")");
         this.contextPath = contextPath;
     }
 
     /***
      * Appends the Host URL to the supplied StringBuffer.
      *
      * @param url A StringBuffer object
      */
     public void getHostUrl(StringBuffer url)
     {
         url.append(getServerScheme());
         url.append("://");
         url.append(getServerName());
         if ((getServerScheme().equals(URIConstants.HTTP)
                 && getServerPort() != URIConstants.HTTP_PORT)
             ||
             (getServerScheme().equals(URIConstants.HTTPS)
                 && getServerPort() != URIConstants.HTTPS_PORT)
             )
         {
             url.append(":");
             url.append(getServerPort());
         }
     }
 
     /***
      * Returns this object as an URL.
      *
      * @return The contents of this object as a String
      */
     public String toString()
     {
         StringBuffer url = new StringBuffer();
 
         getHostUrl(url);
 
         url.append(getContextPath());
         url.append(getScriptName());
         return url.toString();
     }
 }