1    
2    /* ====================================================================
3     * The Apache Software License, Version 1.1
4     *
5     * Copyright (c) 2002 The Apache Software Foundation.  All rights
6     * reserved.
7     *
8     * Redistribution and use in source and binary forms, with or without
9     * modification, are permitted provided that the following conditions
10    * are met:
11    *
12    * 1. Redistributions of source code must retain the above copyright
13    *    notice, this list of conditions and the following disclaimer.
14    *
15    * 2. Redistributions in binary form must reproduce the above copyright
16    *    notice, this list of conditions and the following disclaimer in
17    *    the documentation and/or other materials provided with the
18    *    distribution.
19    *
20    * 3. The end-user documentation included with the redistribution,
21    *    if any, must include the following acknowledgment:
22    *       "This product includes software developed by the
23    *        Apache Software Foundation (http://www.apache.org/)."
24    *    Alternately, this acknowledgment may appear in the software itself,
25    *    if and wherever such third-party acknowledgments normally appear.
26    *
27    * 4. The names "Apache" and "Apache Software Foundation" and
28    *    "Apache POI" must not be used to endorse or promote products
29    *    derived from this software without prior written permission. For
30    *    written permission, please contact apache@apache.org.
31    *
32    * 5. Products derived from this software may not be called "Apache",
33    *    "Apache POI", nor may "Apache" appear in their name, without
34    *    prior written permission of the Apache Software Foundation.
35    *
36    * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37    * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38    * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39    * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
40    * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41    * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42    * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43    * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44    * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
45    * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46    * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47    * SUCH DAMAGE.
48    * ====================================================================
49    *
50    * This software consists of voluntary contributions made by many
51    * individuals on behalf of the Apache Software Foundation.  For more
52    * information on the Apache Software Foundation, please see
53    * <http://www.apache.org/>.
54    */
55   
56   package org.apache.poi.poifs.storage;
57   
58   import org.apache.poi.poifs.common.POIFSConstants;
59   import org.apache.poi.util.IntegerField;
60   import org.apache.poi.util.LittleEndian;
61   import org.apache.poi.util.LittleEndianConsts;
62   import org.apache.poi.util.LongField;
63   import org.apache.poi.util.ShortField;
64   
65   /**
66    * Constants used in reading/writing the Header block
67    *
68    * @author Marc Johnson (mjohnson at apache dot org)
69    */
70   
71   public interface HeaderBlockConstants
72   {
73       public static final long _signature               = 0xE11AB1A1E011CFD0L;
74       public static final int  _bat_array_offset        = 0x4c;
75       public static final int  _max_bats_in_header      =
76           (POIFSConstants.BIG_BLOCK_SIZE - _bat_array_offset)
77           / LittleEndianConsts.INT_SIZE;
78   
79       // useful offsets
80       public static final int  _signature_offset        = 0;
81       public static final int  _bat_count_offset        = 0x2C;
82       public static final int  _property_start_offset   = 0x30;
83       public static final int  _sbat_start_offset       = 0x3C;
84       public static final int  _sbat_block_count_offset = 0x40;
85       public static final int  _xbat_start_offset       = 0x44;
86       public static final int  _xbat_count_offset       = 0x48;
87   }   // end public interface HeaderBlockConstants
88   
89