01: /* ====================================================================
02: Licensed to the Apache Software Foundation (ASF) under one or more
03: contributor license agreements. See the NOTICE file distributed with
04: this work for additional information regarding copyright ownership.
05: The ASF licenses this file to You under the Apache License, Version 2.0
06: (the "License"); you may not use this file except in compliance with
07: the License. You may obtain a copy of the License at
08:
09: http://www.apache.org/licenses/LICENSE-2.0
10:
11: Unless required by applicable law or agreed to in writing, software
12: distributed under the License is distributed on an "AS IS" BASIS,
13: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: See the License for the specific language governing permissions and
15: limitations under the License.
16: ==================================================================== */
17:
18: package org.apache.poi.poifs.storage;
19:
20: import org.apache.poi.poifs.common.POIFSConstants;
21: import org.apache.poi.util.IntegerField;
22: import org.apache.poi.util.LittleEndian;
23: import org.apache.poi.util.LittleEndianConsts;
24: import org.apache.poi.util.LongField;
25: import org.apache.poi.util.ShortField;
26:
27: /**
28: * Constants used in reading/writing the Header block
29: *
30: * @author Marc Johnson (mjohnson at apache dot org)
31: */
32:
33: public interface HeaderBlockConstants {
34: public static final long _signature = 0xE11AB1A1E011CFD0L;
35: public static final int _bat_array_offset = 0x4c;
36: public static final int _max_bats_in_header = (POIFSConstants.BIG_BLOCK_SIZE - _bat_array_offset)
37: / LittleEndianConsts.INT_SIZE;
38:
39: // useful offsets
40: public static final int _signature_offset = 0;
41: public static final int _bat_count_offset = 0x2C;
42: public static final int _property_start_offset = 0x30;
43: public static final int _sbat_start_offset = 0x3C;
44: public static final int _sbat_block_count_offset = 0x40;
45: public static final int _xbat_start_offset = 0x44;
46: public static final int _xbat_count_offset = 0x48;
47: } // end public interface HeaderBlockConstants
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