content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE is free software: you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation, either version 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 General Public License for more details.
   *
   *  You should have received a copy of the GNU General Public License
   *   along with AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 2001-2004 The Apache Software Foundation.
   *
   * Licensed 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: StringValueHandler.java,v 1.2.4.1 2005/09/06 11:33:25 pvedula Exp $
   */
  
  package jaxp.sun.org.apache.xalan.internal.xsltc.runtime;
  
  import org.xml.sax.SAXException;
  
  import jaxp.sun.org.apache.xml.internal.serializer.EmptySerializer;
  
  /**
   * @author Jacek Ambroziak
   * @author Santiago Pericas-Geertsen
   * @author Morten Jorgensen
   */
  public final class StringValueHandler extends EmptySerializer {
  
      private StringBuilder _buffer = new StringBuilder();
      private String _str = null;
      private static final String EMPTY_STR = "";
      private boolean m_escaping = false;
      private int _nestedLevel = 0;
  
      public void characters(char[] ch, int off, int len)
          throws SAXException
      {
          if (_nestedLevel > 0)
              return;
  
          if (_str != null) {
              _buffer.append(_str);
              _str = null;
          }
          _buffer.append(ch, off, len);
      }
  
      public String getValue() {
          if (_buffer.length() != 0) {
              String result = _buffer.toString();
              _buffer.setLength(0);
              return result;
          }
          else {
              String result = _str;
              _str = null;
              return (result != null) ? result : EMPTY_STR;
          }
      }
  
      public void characters(String characters) throws SAXException {
          if (_nestedLevel > 0)
              return;
  
          if (_str == null && _buffer.length() == 0) {
              _str = characters;
          }
          else {
              if (_str != null) {
                  _buffer.append(_str);
                  _str = null;
              }
  
              _buffer.append(characters);
          }
      }
  
      public void startElement(String qname) throws SAXException {
          _nestedLevel++;
      }
  
      public void endElement(String qname) throws SAXException {
          _nestedLevel--;
      }
  
      // Override the setEscaping method just to indicate that this class is
      // aware that that method might be called.
      public boolean setEscaping(boolean bool) {
          boolean oldEscaping = m_escaping;
          m_escaping = bool;
  
          return bool;
      }
  
      /**
       * The value of a PI must not contain the substring "?>". Should
       * that substring be present, replace it by "? >".
       */
      public String getValueOfPI() {
          final String value = getValue();
  
          if (value.indexOf("?>") > 0) {
              final int n = value.length();
              final StringBuilder valueOfPI = new StringBuilder();
  
              for (int i = 0; i < n;) {
                  final char ch = value.charAt(i++);
                  if (ch == '?' && value.charAt(i) == '>') {
                      valueOfPI.append("? >"); i++;
                  }
                  else {
                      valueOfPI.append(ch);
                  }
              }
              return valueOfPI.toString();
          }
          return value;
      }
  }
  