| /* ==================================================================== |
| 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.poi.poifs.storage; |
| |
| import org.apache.poi.poifs.common.POIFSConstants; |
| import org.apache.poi.util.LittleEndianConsts; |
| |
| /** |
| * Constants used in reading/writing the Header block |
| * |
| * @author Marc Johnson (mjohnson at apache dot org) |
| */ |
| public interface HeaderBlockConstants |
| { |
| public static final long _signature = 0xE11AB1A1E011CFD0L; |
| public static final int _bat_array_offset = 0x4c; |
| public static final int _max_bats_in_header = |
| (POIFSConstants.SMALLER_BIG_BLOCK_SIZE - _bat_array_offset) |
| / LittleEndianConsts.INT_SIZE; // If 4k blocks, rest is blank |
| |
| // Note - in Microsoft terms: |
| // BAT ~= FAT |
| // SBAT ~= MiniFAT |
| // XBAT ~= DIFat |
| |
| // useful offsets |
| public static final int _signature_offset = 0; |
| public static final int _bat_count_offset = 0x2C; |
| public static final int _property_start_offset = 0x30; |
| public static final int _sbat_start_offset = 0x3C; |
| public static final int _sbat_block_count_offset = 0x40; |
| public static final int _xbat_start_offset = 0x44; |
| public static final int _xbat_count_offset = 0x48; |
| } // end public interface HeaderBlockConstants |
| |
