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-
- /* ====================================================================
- 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.common;
-
- /**
- * <p>A repository for constants shared by POI classes.</p>
- */
- public interface POIFSConstants
- {
- /** Most files use 512 bytes as their big block size */
- public static final int SMALLER_BIG_BLOCK_SIZE = 0x0200;
- public static final POIFSBigBlockSize SMALLER_BIG_BLOCK_SIZE_DETAILS =
- new POIFSBigBlockSize(SMALLER_BIG_BLOCK_SIZE, (short)9);
- /** Some use 4096 bytes */
- public static final int LARGER_BIG_BLOCK_SIZE = 0x1000;
- public static final POIFSBigBlockSize LARGER_BIG_BLOCK_SIZE_DETAILS =
- new POIFSBigBlockSize(LARGER_BIG_BLOCK_SIZE, (short)12);
-
- /** How big a block in the small block stream is. Fixed size */
- public static final int SMALL_BLOCK_SIZE = 0x0040;
-
- /** How big a single property is */
- public static final int PROPERTY_SIZE = 0x0080;
-
- /**
- * The minimum size of a document before it's stored using
- * Big Blocks (normal streams). Smaller documents go in the
- * Mini Stream (SBAT / Small Blocks)
- */
- public static final int BIG_BLOCK_MINIMUM_DOCUMENT_SIZE = 0x1000;
-
- /** The highest sector number you're allowed, 0xFFFFFFFA */
- public static final int LARGEST_REGULAR_SECTOR_NUMBER = -5;
-
- /** Indicates the sector holds a DIFAT block (0xFFFFFFFC) */
- public static final int DIFAT_SECTOR_BLOCK = -4;
- /** Indicates the sector holds a FAT block (0xFFFFFFFD) */
- public static final int FAT_SECTOR_BLOCK = -3;
- /** Indicates the sector is the end of a chain (0xFFFFFFFE) */
- public static final int END_OF_CHAIN = -2;
- /** Indicates the sector is not used (0xFFFFFFFF) */
- public static final int UNUSED_BLOCK = -1;
-
- /** The first 4 bytes of an OOXML file, used in detection */
- public static final byte[] OOXML_FILE_HEADER =
- new byte[] { 0x50, 0x4b, 0x03, 0x04 };
- /** The first 5 bytes of a raw XML file, used in detection */
- public static final byte[] RAW_XML_FILE_HEADER =
- new byte[] { 0x3c, 0x3f, 0x78, 0x6d, 0x6c };
- } // end public interface POIFSConstants;
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