| |
| /* ==================================================================== |
| 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; |
| |
| import org.apache.poi.util.LittleEndianConsts; |
| |
| /** |
| * <p>A class describing attributes of the Big Block Size</p> |
| */ |
| public final class POIFSBigBlockSize |
| { |
| private int bigBlockSize; |
| private short headerValue; |
| |
| protected POIFSBigBlockSize(int bigBlockSize, short headerValue) { |
| this.bigBlockSize = bigBlockSize; |
| this.headerValue = headerValue; |
| } |
| |
| public int getBigBlockSize() { |
| return bigBlockSize; |
| } |
| |
| /** |
| * Returns the value that gets written into the |
| * header. |
| * Is the power of two that corresponds to the |
| * size of the block, eg 512 => 9 |
| */ |
| public short getHeaderValue() { |
| return headerValue; |
| } |
| |
| public int getPropertiesPerBlock() { |
| return bigBlockSize / POIFSConstants.PROPERTY_SIZE; |
| } |
| |
| public int getBATEntriesPerBlock() { |
| return bigBlockSize / LittleEndianConsts.INT_SIZE; |
| } |
| public int getXBATEntriesPerBlock() { |
| return getBATEntriesPerBlock() - 1; |
| } |
| public int getNextXBATChainOffset() { |
| return getXBATEntriesPerBlock() * LittleEndianConsts.INT_SIZE; |
| } |
| } |