package org.codehaus.plexus.util.xml;
   
   /*
    * Copyright The Codehaus 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.
   */
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  import java.util.Stack;
  
  import org.codehaus.plexus.util.xml.pull.XmlSerializer;
  
  /**
   * Write to an MXSerializer.
   *
   * @author <a href="mailto:brett@codehaus.org">Brett Porter</a>
   *
   */
  public class SerializerXMLWriter implements XMLWriter {
      private final XmlSerializer serializer;
  
      private final String namespace;
  
      private final Stack<String> elements = new Stack<String>();
  
      private List<Exception> exceptions;
  
      public SerializerXMLWriter(String namespace, XmlSerializer serializer) {
          this.serializer = serializer;
          this.namespace = namespace;
      }
  
      @Override
      public void startElement(String name) {
          try {
              serializer.startTag(namespace, name);
              elements.push(name);
          } catch (IOException e) {
              storeException(e);
          }
      }
  
      @Override
      public void addAttribute(String key, String value) {
          try {
              serializer.attribute(namespace, key, value);
          } catch (IOException e) {
              storeException(e);
          }
      }
  
      @Override
      public void writeText(String text) {
          try {
              serializer.text(text);
          } catch (IOException e) {
              storeException(e);
          }
      }
  
      @Override
      public void writeMarkup(String text) {
          try {
              serializer.cdsect(text);
          } catch (IOException e) {
              storeException(e);
          }
      }
  
      @Override
      public void endElement() {
          try {
              serializer.endTag(namespace, elements.pop());
          } catch (IOException e) {
              storeException(e);
          }
      }
  
      /**
       * @todo Maybe the interface should allow IOExceptions on each?
       */
      private void storeException(IOException e) {
          if (exceptions == null) {
              exceptions = new ArrayList<Exception>();
          }
         exceptions.add(e);
     }
 
     public List<Exception> getExceptions() {
         return exceptions == null ? Collections.<Exception>emptyList() : exceptions;
     }
 }