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.hssf.record; 57 58 import org.apache.poi.util.LittleEndian; 59 60 /** 61 * Title: Date Window 1904 Flag record <P> 62 * Description: Flag specifying whether 1904 date windowing is used. 63 * (tick toc tick toc...BOOM!) <P> 64 * REFERENCE: PG 280 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P> 65 * @author Andrew C. Oliver (acoliver at apache dot org) 66 * @version 2.0-pre 67 */ 68 69 public class DateWindow1904Record 70 extends Record 71 { 72 public final static short sid = 0x22; 73 private short field_1_window; 74 75 public DateWindow1904Record() 76 { 77 } 78 79 /** 80 * Constructs a DateWindow1904 record and sets its fields appropriately. 81 * 82 * @param id id must be 0x22 or an exception will be throw upon validation 83 * @param size the size of the data area of the record 84 * @param data data of the record (should not contain sid/len) 85 */ 86 87 public DateWindow1904Record(short id, short size, byte [] data) 88 { 89 super(id, size, data); 90 } 91 92 /** 93 * Constructs a DateWindow1904 record and sets its fields appropriately. 94 * 95 * @param id id must be 0x22 or an exception will be throw upon validation 96 * @param size the size of the data area of the record 97 * @param data data of the record (should not contain sid/len) 98 * @param offset of the record's data 99 */ 100 101 public DateWindow1904Record(short id, short size, byte [] data, 102 int offset) 103 { 104 super(id, size, data, offset); 105 } 106 107 protected void validateSid(short id) 108 { 109 if (id != sid) 110 { 111 throw new RecordFormatException("NOT A 1904 RECORD"); 112 } 113 } 114 115 protected void fillFields(byte [] data, short size, int offset) 116 { 117 field_1_window = LittleEndian.getShort(data, 0 + offset); 118 } 119 120 /** 121 * sets whether or not to use 1904 date windowing (which means you'll be screwed in 2004) 122 * @param window flag - 0/1 (false,true) 123 */ 124 125 public void setWindowing(short window) 126 { // I hate using numbers in method names so I wont! 127 field_1_window = window; 128 } 129 130 /** 131 * gets whether or not to use 1904 date windowing (which means you'll be screwed in 2004) 132 * @return window flag - 0/1 (false,true) 133 */ 134 135 public short getWindowing() 136 { 137 return field_1_window; 138 } 139 140 public String toString() 141 { 142 StringBuffer buffer = new StringBuffer(); 143 144 buffer.append("[1904]\n"); 145 buffer.append(" .is1904 = ") 146 .append(Integer.toHexString(getWindowing())).append("\n"); 147 buffer.append("[/1904]\n"); 148 return buffer.toString(); 149 } 150 151 public int serialize(int offset, byte [] data) 152 { 153 LittleEndian.putShort(data, 0 + offset, sid); 154 LittleEndian.putShort(data, 2 + offset, 155 (( short ) 0x02)); // 2 bytes (6 total) 156 LittleEndian.putShort(data, 4 + offset, getWindowing()); 157 return getRecordSize(); 158 } 159 160 public int getRecordSize() 161 { 162 return 6; 163 } 164 165 public short getSid() 166 { 167 return this.sid; 168 } 169 } 170