/* ==================================================================== 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. ==================================================================== */ /* ================================================================ * About NPOI * Author: Tony Qu * Author's email: tonyqus (at) gmail.com * Author's Blog: tonyqus.wordpress.com.cn (wp.tonyqus.cn) * HomePage: http://www.codeplex.com/npoi * Contributors: * * ==============================================================*/ using System; using System.Collections; using System.IO; using System.Collections.Generic; using HH.WMS.Utils.NPOI.POIFS.Storage; using HH.WMS.Utils.NPOI.POIFS.FileSystem; using HH.WMS.Utils.NPOI.POIFS.Common; namespace HH.WMS.Utils.NPOI.POIFS.Properties { public class PropertyTable : PropertyTableBase, BlockWritable { private POIFSBigBlockSize _bigBigBlockSize; private BlockWritable[] _blocks; /** * Default constructor */ public PropertyTable(HeaderBlock headerBlock) : base(headerBlock) { _bigBigBlockSize = headerBlock.BigBlockSize; _blocks = null; } /** * reading constructor (used when we've read in a file and we want * to extract the property table from it). Populates the * properties thoroughly * * @param startBlock the first block of the property table * @param blockList the list of blocks * * @exception IOException if anything goes wrong (which should be * a result of the input being NFG) */ public PropertyTable(HeaderBlock headerBlock, RawDataBlockList blockList) : base(headerBlock, PropertyFactory.ConvertToProperties( blockList.FetchBlocks(headerBlock.PropertyStart, -1) ) ) { _bigBigBlockSize = headerBlock.BigBlockSize; _blocks = null; } /** * Prepare to be written Leon */ public void PreWrite() { List properties = new List(_properties.Count); for (int i = 0; i < _properties.Count; i++) properties.Add(_properties[i]); // give each property its index for (int k = 0; k < properties.Count; k++) { properties[ k ].Index = k; } // allocate the blocks for the property table _blocks = PropertyBlock.CreatePropertyBlockArray(_bigBigBlockSize, properties); // prepare each property for writing for (int k = 0; k < properties.Count; k++) { properties[ k ].PreWrite(); } } /* ********** START implementation of BATManaged ********** */ /** * Return the number of BigBlock's this instance uses * * @return count of BigBlock instances */ public override int CountBlocks { get { return (_blocks == null) ? 0 : _blocks.Length; } } /** * Write the storage to an Stream * * @param stream the Stream to which the stored data should * be written * * @exception IOException on problems writing to the specified * stream */ public void WriteBlocks(Stream stream) { if (_blocks != null) { for (int j = 0; j < _blocks.Length; j++) { _blocks[ j ].WriteBlocks(stream); } } } } }