/* ====================================================================
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.hssf.record;
import org.apache.poi.util.LittleEndian;
/**
* Title: Beginning Of File<P>
* Description: Somewhat of a misnomer, its used for the beginning of a set of
* records that have a particular pupose or subject.
* Used in sheets and workbooks.<P>
* REFERENCE: PG 289 Microsoft Excel 97 Developer's Kit (ISBN: 1-57231-498-2)<P>
* @author Andrew C. Oliver
* @author Jason Height (jheight at chariot dot net dot au)
* @version 2.0-pre
*/
public class BOFRecord
extends Record
{
/**
* for BIFF8 files the BOF is 0x809. For earlier versions it was 0x09 or 0x(biffversion)09
*/
public final static short sid = 0x809;
private short field_1_version;
private short field_2_type;
private short field_3_build;
private short field_4_year;
private int field_5_history;
private int field_6_rversion;
/**
* suggested default (0x06 - BIFF8)
*/
public final static short VERSION = 0x06;
/**
* suggested default 0x10d3
*/
public final static short BUILD = 0x10d3;
/**
* suggested default 0x07CC (1996)
*/
public final static short BUILD_YEAR = 0x07CC; // 1996
/**
* suggested default for a normal sheet (0x41)
*/
public final static short HISTORY_MASK = 0x41;
public final static short TYPE_WORKBOOK = 0x05;
public final static short TYPE_VB_MODULE = 0x06;
public final static short TYPE_WORKSHEET = 0x10;
public final static short TYPE_CHART = 0x20;
public final static short TYPE_EXCEL_4_MACRO = 0x40;
public final static short TYPE_WORKSPACE_FILE = 0x100;
/**
* Constructs an empty BOFRecord with no fields set.
*/
public BOFRecord()
{
}
/**
* Constructs a BOFRecord and sets its fields appropriately
*
* @param id id must be 0x809 or an exception will be throw upon validation
* @param size the size of the data area of the record
* @param data data of the record (should not contain sid/len)
*/
public BOFRecord(RecordInputStream in)
{
super(in);
// fillFields(data,size);
}
protected void validateSid(short id)
{
if (id != sid)
{
throw new RecordFormatException("NOT A BOF RECORD");
}
}
protected void fillFields(RecordInputStream in)
{
field_1_version = in.readShort();
field_2_type = in.readShort();
field_3_build = in.readShort();
field_4_year = in.readShort();
field_5_history = in.readInt();
field_6_rversion = in.readInt();
}
/**
* Version number - for BIFF8 should be 0x06
* @see #VERSION
* @param version version to be set
*/
public void setVersion(short version)
{
field_1_version = version;
}
/**
* type of object this marks
* @see #TYPE_WORKBOOK
* @see #TYPE_VB_MODULE
* @see #TYPE_WORKSHEET
* @see #TYPE_CHART
* @see #TYPE_EXCEL_4_MACRO
* @see #TYPE_WORKSPACE_FILE
* @param type type to be set
*/
public void setType(short type)
{
field_2_type = type;
}
/**
* build that wrote this file
* @see #BUILD
* @param build build number to set
*/
public void setBuild(short build)
{
field_3_build = build;
}
/**
* Year of the build that wrote this file
* @see #BUILD_YEAR
* @param year build year to set
*/
public void setBuildYear(short year)
{
field_4_year = year;
}
/**
* set the history bit mask (not very useful)
* @see #HISTORY_MASK
* @param bitmask bitmask to set for the history
*/
public void setHistoryBitMask(int bitmask)
{
field_5_history = bitmask;
}
/**
* set the minimum version required to read this file
*
* @see #VERSION
* @param version version to set
*/
public void setRequiredVersion(int version)
{
field_6_rversion = version;
}
/**
* Version number - for BIFF8 should be 0x06
* @see #VERSION
* @return short version number of the generator of this file
*/
public short getVersion()
{
return field_1_version;
}
/**
* type of object this marks
* @see #TYPE_WORKBOOK
* @see #TYPE_VB_MODULE
* @see #TYPE_WORKSHEET
* @see #TYPE_CHART
* @see #TYPE_EXCEL_4_MACRO
* @see #TYPE_WORKSPACE_FILE
* @return short type of object
*/
public short getType()
{
return field_2_type;
}
/**
* get the build that wrote this file
* @see #BUILD
* @return short build number of the generator of this file
*/
public short getBuild()
{
return field_3_build;
}
/**
* Year of the build that wrote this file
* @see #BUILD_YEAR
* @return short build year of the generator of this file
*/
public short getBuildYear()
{
return field_4_year;
}
/**
* get the history bit mask (not very useful)
* @see #HISTORY_MASK
* @return int bitmask showing the history of the file (who cares!)
*/
public int getHistoryBitMask()
{
return field_5_history;
}
/**
* get the minimum version required to read this file
*
* @see #VERSION
* @return int least version that can read the file
*/
public int getRequiredVersion()
{
return field_6_rversion;
}
public String toString()
{
StringBuffer buffer = new StringBuffer();
buffer.append("[BOF RECORD]\n");
buffer.append(" .version = ")
.append(Integer.toHexString(getVersion())).append("\n");
buffer.append(" .type = ")
.append(Integer.toHexString(getType())).append("\n");
buffer.append(" .build = ")
.append(Integer.toHexString(getBuild())).append("\n");
buffer.append(" .buildyear = ").append(getBuildYear())
.append("\n");
buffer.append(" .history = ")
.append(Integer.toHexString(getHistoryBitMask())).append("\n");
buffer.append(" .requiredversion = ")
.append(Integer.toHexString(getRequiredVersion())).append("\n");
buffer.append("[/BOF RECORD]\n");
return buffer.toString();
}
public int serialize(int offset, byte [] data)
{
LittleEndian.putShort(data, 0 + offset, sid);
LittleEndian.putShort(data, 2 + offset,
(( short ) 0x10)); // 16 byte length
LittleEndian.putShort(data, 4 + offset, getVersion());
LittleEndian.putShort(data, 6 + offset, getType());
LittleEndian.putShort(data, 8 + offset, getBuild());
LittleEndian.putShort(data, 10 + offset, getBuildYear());
LittleEndian.putInt(data, 12 + offset, getHistoryBitMask());
LittleEndian.putInt(data, 16 + offset, getRequiredVersion());
return getRecordSize();
}
public int getRecordSize()
{
return 20;
}
public short getSid()
{
return sid;
}
public Object clone() {
BOFRecord rec = new BOFRecord();
rec.field_1_version = field_1_version;
rec.field_2_type = field_2_type;
rec.field_3_build = field_3_build;
rec.field_4_year = field_4_year;
rec.field_5_history = field_5_history;
rec.field_6_rversion = field_6_rversion;
return rec;
}
}
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