1 2 /* ==================================================================== 3 * The Apache Software License, Version 1.1 4 * 5 * Copyright (c) 2002 The Apache Software Foundation. All rights 6 * reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in 17 * the documentation and/or other materials provided with the 18 * distribution. 19 * 20 * 3. The end-user documentation included with the redistribution, 21 * if any, must include the following acknowledgment: 22 * "This product includes software developed by the 23 * Apache Software Foundation (http://www.apache.org/)." 24 * Alternately, this acknowledgment may appear in the software itself, 25 * if and wherever such third-party acknowledgments normally appear. 26 * 27 * 4. The names "Apache" and "Apache Software Foundation" and 28 * "Apache POI" must not be used to endorse or promote products 29 * derived from this software without prior written permission. For 30 * written permission, please contact apache@apache.org. 31 * 32 * 5. Products derived from this software may not be called "Apache", 33 * "Apache POI", nor may "Apache" appear in their name, without 34 * prior written permission of the Apache Software Foundation. 35 * 36 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 37 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 38 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 39 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 43 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 44 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 45 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 46 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 47 * SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This software consists of voluntary contributions made by many 51 * individuals on behalf of the Apache Software Foundation. For more 52 * information on the Apache Software Foundation, please see 53 * <http://www.apache.org/>. 54 */ 55 56 package org.apache.poi.poifs.property; 57 58 import java.io.IOException; 59 60 import java.util.*; 61 62 import org.apache.poi.poifs.common.POIFSConstants; 63 import org.apache.poi.poifs.storage.ListManagedBlock; 64 65 /** 66 * Factory for turning an array of RawDataBlock instances containing 67 * Proprty data into an array of proper Property objects. 68 * 69 * The array produced may be sparse, in that any portion of data that 70 * should correspond to a Property, but which does not map to a proper 71 * Property (i.e., a DirectoryProperty, DocumentProperty, or 72 * RootProperty) will get mapped to a null Property in the array. 73 * 74 * @author Marc Johnson (mjohnson at apache dot org) 75 */ 76 77 class PropertyFactory 78 { 79 80 // no need for an accessible constructor 81 private PropertyFactory() 82 { 83 } 84 85 /** 86 * Convert raw data blocks to an array of Property's 87 * 88 * @param blocks to be converted 89 * 90 * @return the converted List of Property objects. May contain 91 * nulls, but will not be null 92 * 93 * @exception IOException if any of the blocks are empty 94 */ 95 96 static List convertToProperties(ListManagedBlock [] blocks) 97 throws IOException 98 { 99 List properties = new ArrayList(); 100 101 for (int j = 0; j < blocks.length; j++) 102 { 103 byte[] data = blocks[ j ].getData(); 104 int property_count = data.length 105 / POIFSConstants.PROPERTY_SIZE; 106 int offset = 0; 107 108 for (int k = 0; k < property_count; k++) 109 { 110 switch (data[ offset + PropertyConstants.PROPERTY_TYPE_OFFSET ]) 111 { 112 113 case PropertyConstants.DIRECTORY_TYPE : 114 properties 115 .add(new DirectoryProperty(properties.size(), 116 data, offset)); 117 break; 118 119 case PropertyConstants.DOCUMENT_TYPE : 120 properties.add(new DocumentProperty(properties.size(), 121 data, offset)); 122 break; 123 124 case PropertyConstants.ROOT_TYPE : 125 properties.add(new RootProperty(properties.size(), 126 data, offset)); 127 break; 128 129 default : 130 properties.add(null); 131 break; 132 } 133 offset += POIFSConstants.PROPERTY_SIZE; 134 } 135 } 136 return properties; 137 } 138 } // end package scope class PropertyFactory 139 140