src/java/org/apache/poi/poifs/common/POIFSConstants.java

/* ====================================================================
   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.
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package org.apache.poi.poifs.common;

/**
 * <p>A repository for constants shared by POI classes.</p>
 *
 * @author Marc Johnson (mjohnson at apache dot org)
 */

public interface POIFSConstants
{
    /** Most files use 512 bytes as their big block size */
    public static final int BIG_BLOCK_SIZE = 0x0200;
    /** Some use 4096 bytes */
    public static final int LARGER_BIG_BLOCK_SIZE = 0x1000;
    
    public static final int END_OF_CHAIN   = -2;
    public static final int PROPERTY_SIZE  = 0x0080;
    public static final int UNUSED_BLOCK   = -1;
    
    public static final byte[] OOXML_FILE_HEADER = 
    	new byte[] { 0x50, 0x4b, 0x03, 0x04 };
}   // end public interface POIFSConstants;