/*
    * 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
    *
   *   https://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.unpack200;
  
  import java.io.IOException;
  import java.io.InputStream;
  
  import org.apache.commons.compress.harmony.pack200.Codec;
  import org.apache.commons.compress.harmony.pack200.Pack200Exception;
  import org.apache.commons.compress.harmony.unpack200.bytecode.AnnotationDefaultAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.CodeAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.ConstantValueAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.DeprecatedAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.EnclosingMethodAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.ExceptionsAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.InnerClassesAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.LineNumberTableAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.LocalVariableTableAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.LocalVariableTypeTableAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.SignatureAttribute;
  import org.apache.commons.compress.harmony.unpack200.bytecode.SourceFileAttribute;
  
  /**
   * Attribute definition bands are the set of bands used to define extra attributes transmitted in the archive.
   */
  public class AttrDefinitionBands extends BandSet {
  
      private int[] attributeDefinitionHeader;
  
      private String[] attributeDefinitionLayout;
  
      private String[] attributeDefinitionName;
  
      private AttributeLayoutMap attributeDefinitionMap;
  
      private final String[] cpUTF8;
  
      /**
       * Constructs a new instance.
       *
       * @param segment the segment.
       */
      public AttrDefinitionBands(final Segment segment) {
          super(segment);
          this.cpUTF8 = segment.getCpBands().getCpUTF8();
      }
  
      /**
       * Gets the attribute layout map.
       *
       * @return the attribute layout map.
       */
      public AttributeLayoutMap getAttributeDefinitionMap() {
          return attributeDefinitionMap;
      }
  
      /*
       * (non-Javadoc)
       *
       * @see org.apache.commons.compress.harmony.unpack200.BandSet#unpack(java.io.InputStream)
       */
      @Override
      public void read(final InputStream in) throws IOException, Pack200Exception {
          final int attributeDefinitionCount = header.getAttributeDefinitionCount();
          attributeDefinitionHeader = decodeBandInt("attr_definition_headers", in, Codec.BYTE1, attributeDefinitionCount);
          attributeDefinitionName = parseReferences("attr_definition_name", in, Codec.UNSIGNED5, attributeDefinitionCount, cpUTF8);
          attributeDefinitionLayout = parseReferences("attr_definition_layout", in, Codec.UNSIGNED5, attributeDefinitionCount, cpUTF8);
  
          attributeDefinitionMap = new AttributeLayoutMap();
  
          int overflowIndex = 32;
          if (segment.getSegmentHeader().getOptions().hasClassFlagsHi()) {
              overflowIndex = 63;
          }
          for (int i = 0; i < attributeDefinitionCount; i++) {
              final int context = attributeDefinitionHeader[i] & 0x03;
              int index = (attributeDefinitionHeader[i] >> 2) - 1;
              if (index == -1) {
                  index = overflowIndex++;
              }
              final AttributeLayout layout = new AttributeLayout(attributeDefinitionName[i], context, attributeDefinitionLayout[i], index, false);
              final NewAttributeBands newBands = new NewAttributeBands(segment, layout);
              attributeDefinitionMap.add(layout, newBands);
         }
         attributeDefinitionMap.checkMap();
         setupDefaultAttributeNames();
     }
 
     private void setupDefaultAttributeNames() {
         AnnotationDefaultAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("AnnotationDefault")); //$NON-NLS-1$
         CodeAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("Code")); //$NON-NLS-1$
         ConstantValueAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("ConstantValue")); //$NON-NLS-1$
         DeprecatedAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("Deprecated")); //$NON-NLS-1$
         EnclosingMethodAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("EnclosingMethod")); //$NON-NLS-1$
         ExceptionsAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("Exceptions")); //$NON-NLS-1$
         InnerClassesAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("InnerClasses")); //$NON-NLS-1$
         LineNumberTableAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("LineNumberTable")); //$NON-NLS-1$
         LocalVariableTableAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("LocalVariableTable")); //$NON-NLS-1$
         LocalVariableTypeTableAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("LocalVariableTypeTable")); //$NON-NLS-1$
         SignatureAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("Signature")); //$NON-NLS-1$
         SourceFileAttribute.setAttributeName(segment.getCpBands().cpUTF8Value("SourceFile")); //$NON-NLS-1$
         MetadataBandGroup.setRvaAttributeName(segment.getCpBands().cpUTF8Value("RuntimeVisibleAnnotations"));
         MetadataBandGroup.setRiaAttributeName(segment.getCpBands().cpUTF8Value("RuntimeInvisibleAnnotations"));
         MetadataBandGroup.setRvpaAttributeName(segment.getCpBands().cpUTF8Value("RuntimeVisibleParameterAnnotations"));
         MetadataBandGroup.setRipaAttributeName(segment.getCpBands().cpUTF8Value("RuntimeInvisibleParameterAnnotations"));
     }
 
     @Override
     public void unpack() throws Pack200Exception, IOException {
 
     }
 
 }