content: /*
  * Conditions Of Use
  *
  * This software was developed by employees of the National Institute of
  * Standards and Technology (NIST), an agency of the Federal Government.
  * Pursuant to title 15 Untied States Code Section 105, works of NIST
  * employees are not subject to copyright protection in the United States
  * and are considered to be in the public domain.  As a result, a formal
  * license is not needed to use the software.
  *
  * This software is provided by NIST as a service and is expressly
  * provided "AS IS."  NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
  * OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
  * AND DATA ACCURACY.  NIST does not warrant or make any representations
  * regarding the use of the software or the results thereof, including but
  * not limited to the correctness, accuracy, reliability or usefulness of
  * the software.
  *
  * Permission to use this software is contingent upon your acceptance
  * of the terms of this agreement
  *
  * .
  *
  */
  /*******************************************************************************
  * Product of NIST/ITL Advanced Networking Technologies Division (ANTD).        *
  *******************************************************************************/
  package gov2.nist.javax2.sip.header;
  
  /**
   * A generic extension header for the stack.
   * The input text of the header gets recorded here.
   *
   * @version 1.2 $Revision: 1.5 $ $Date: 2009/07/17 18:57:30 $
   * @since 1.1
   *
   * @author M. Ranganathan   <br/>
   *
   *
   */
  public class ExtensionHeaderImpl
      extends SIPHeader
      implements javax2.sip.header.ExtensionHeader {
  
      /**
       * Comment for <code>serialVersionUID</code>
       */
      private static final long serialVersionUID = -8693922839612081849L;
  
      protected String value;
  
      /**
       * This was added to allow for automatic cloning of headers.
       */
      public ExtensionHeaderImpl() {
      }
  
      public ExtensionHeaderImpl(String headerName) {
          super(headerName);
      }
  
      /**
       * Set the name of the header.
       * @param headerName is the name of the header to set.
       */
  
      public void setName(String headerName) {
          this.headerName = headerName;
      }
  
      /**
       * Set the value of the header.
       */
      public void setValue(String value) {
          this.value = value;
      }
  
      /**
       * Get the value of the extension header.
       * @return the value of the extension header.
       */
      public String getHeaderValue() {
          if (this.value != null) {
              return this.value;
          } else {
              String encodedHdr = null;
              try {
                  // Bug fix submitted by Lamine Brahimi
                  encodedHdr = this.encode();
              } catch (Exception ex) {
                  return null;
              }
              StringBuffer buffer = new StringBuffer(encodedHdr);
              while (buffer.length() > 0 && buffer.charAt(0) != ':') {
                  buffer.deleteCharAt(0);
              }
              buffer.deleteCharAt(0);
              this.value = buffer.toString().trim();
              return this.value;
          }
      }
  
      /**
       * Return the canonical encoding of this header.
       */
      public String encode() {
          return new StringBuffer(this.headerName)
              .append(COLON)
              .append(SP)
              .append(this.value)
              .append(NEWLINE)
              .toString();
      }
  
      /**
       * Return just the body of this header encoded (leaving out the
       * name and the CRLF at the end).
       */
      public String encodeBody() {
          return this.getHeaderValue();
      }
  }
  