content: /*
   * This library is part of OpenCms -
   * the Open Source Content Management System
   *
   * Copyright (c) Alkacon Software GmbH & Co. KG (https://www.alkacon.com)
   *
   * This library 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 2.1 of the License, or (at your option) any later version.
   *
   * This library 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.
   *
   * For further information about Alkacon Software, please see the
   * company website: https://www.alkacon.com
   *
   * For further information about OpenCms, please see the
   * project website: https://www.opencms.org
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  
  package org.opencms.jsp.jsonpart;
  
  import java.util.List;
  import java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import com.google.common.collect.Lists;
  
  /**
   * Helper class used to translate key/value pairs from and to the format which can be processed by the
   * CmsJsonPartFilter.<p>
   */
  public class CmsJsonPart {
  
      /** The terminator used for JSON parts. */
      public static final String END = "\u0007ENDJSONPART";
  
      /** Pattern used to detect the parts of the content which should be transformed to JSON. */
      private static Pattern FORMAT_PATTERN = Pattern.compile(
          "BEGINJSONPART\u0007(.*?)\u0007(.*?)\u0007ENDJSONPART",
          Pattern.DOTALL);
  
      /** The key. */
      private String m_key;
  
      /** The value. */
      private String m_value;
  
      /**
       * Creates a new instance.<p>
       *
       * @param key the key
       * @param value the value
       */
      public CmsJsonPart(String key, String value) {
          super();
          m_key = key;
          m_value = value;
      }
  
      /**
       * Gets the header section for a named JSON part.<p>
       *
       * @param key the JSON key for the part
       * @return the header section for the given key
       */
      public static final String getHeader(String key) {
  
          return "BEGINJSONPART\u0007" + key + "\u0007";
      }
  
      /**
       * Parses the encoded JSON parts from the given string and puts them in a list.<p>
       *
       * @param text the text containing the encoded JSON parts
       * @return the decoded JSON parts
       */
      public static List<CmsJsonPart> parseJsonParts(String text) {
  
          List<CmsJsonPart> result = Lists.newArrayList();
          Matcher matcher = FORMAT_PATTERN.matcher(text);
          while (matcher.find()) {
              String key = matcher.group(1);
              String value = matcher.group(2);
              CmsJsonPart part = new CmsJsonPart(key, value);
              result.add(part);
          }
          return result;
      }
  
      /**
       * Returns the key.<p>
       *
       * @return the key
       */
      public String getKey() {
  
          return m_key;
      }
  
      /**
       * Returns the value.<p>
       *
       * @return the value
       */
      public String getValue() {
  
          return m_value;
      }
  
  }
  