/*
    *  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.
   */
  package org.apache.commons.compress.harmony.pack200;
  
  import java.io.IOException;
  import java.io.OutputStream;
  import java.util.jar.JarFile;
  import java.util.jar.JarInputStream;
  
  import org.apache.commons.compress.java.util.jar.Pack200.Packer;
  import org.apache.commons.compress.utils.ParsingUtils;
  
  /**
   * This class provides the binding between the standard Pack200 interface and the internal interface for (un)packing. As this uses generics for the SortedMap,
   * this class must be compiled and run on a Java 1.5 system. However, Java 1.5 is not necessary to use the internal libraries for unpacking.
   */
  public class Pack200PackerAdapter extends Pack200Adapter implements Packer {
  
      private final PackingOptions options = new PackingOptions();
  
      @Override
      protected void firePropertyChange(final String propertyName, final Object oldValue, final Object newValue) throws IOException {
          super.firePropertyChange(propertyName, oldValue, newValue);
          if (newValue != null && !newValue.equals(oldValue)) {
              if (propertyName.startsWith(CLASS_ATTRIBUTE_PFX)) {
                  final String attributeName = propertyName.substring(CLASS_ATTRIBUTE_PFX.length());
                  options.addClassAttributeAction(attributeName, (String) newValue);
              } else if (propertyName.startsWith(CODE_ATTRIBUTE_PFX)) {
                  final String attributeName = propertyName.substring(CODE_ATTRIBUTE_PFX.length());
                  options.addCodeAttributeAction(attributeName, (String) newValue);
              } else if (propertyName.equals(DEFLATE_HINT)) {
                  options.setDeflateHint((String) newValue);
              } else if (propertyName.equals(EFFORT)) {
                  options.setEffort(ParsingUtils.parseIntValue((String) newValue));
              } else if (propertyName.startsWith(FIELD_ATTRIBUTE_PFX)) {
                  final String attributeName = propertyName.substring(FIELD_ATTRIBUTE_PFX.length());
                  options.addFieldAttributeAction(attributeName, (String) newValue);
              } else if (propertyName.equals(KEEP_FILE_ORDER)) {
                  options.setKeepFileOrder(Boolean.parseBoolean((String) newValue));
              } else if (propertyName.startsWith(METHOD_ATTRIBUTE_PFX)) {
                  final String attributeName = propertyName.substring(METHOD_ATTRIBUTE_PFX.length());
                  options.addMethodAttributeAction(attributeName, (String) newValue);
              } else if (propertyName.equals(MODIFICATION_TIME)) {
                  options.setModificationTime((String) newValue);
              } else if (propertyName.startsWith(PASS_FILE_PFX)) {
                  if (oldValue != null && !oldValue.equals("")) {
                      options.removePassFile((String) oldValue);
                  }
                  options.addPassFile((String) newValue);
              } else if (propertyName.equals(SEGMENT_LIMIT)) {
                  options.setSegmentLimit(ParsingUtils.parseLongValue((String) newValue));
              } else if (propertyName.equals(UNKNOWN_ATTRIBUTE)) {
                  options.setUnknownAttributeAction((String) newValue);
              }
          }
      }
  
      @Override
      public void pack(final JarFile file, final OutputStream out) throws IOException {
          if (file == null || out == null) {
              throw new IllegalArgumentException("Must specify both input and output streams");
          }
          completed(0);
          try {
              new org.apache.commons.compress.harmony.pack200.Archive(file, out, options).pack();
          } catch (final Pack200Exception e) {
              throw new IOException("Failed to pack Jar:" + e);
          }
          completed(1);
      }
  
      @Override
      public void pack(final JarInputStream in, final OutputStream out) throws IOException {
          if (in == null || out == null) {
              throw new IllegalArgumentException("Must specify both input and output streams");
          }
          completed(0);
          final PackingOptions options = new PackingOptions();
  
          try {
              new org.apache.commons.compress.harmony.pack200.Archive(in, out, options).pack();
          } catch (final Pack200Exception e) {
              throw new IOException("Failed to pack Jar:" + e);
          }
          completed(1);
         in.close();
     }
 
 }