externsheetsubrecord.java

Office格式转换代码

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package org.apache.poi.hssf.record;

import org.apache.poi.util.LittleEndian;

/**
 * Title:        A sub Record for Extern Sheet <P>
 * Description:  Defines a named range within a workbook. <P>
 * REFERENCE:  <P>
 * @author Libin Roman (Vista Portal LDT. Developer)
 * @version 1.0-pre
 */

public class ExternSheetSubRecord extends Record {
    public final static short sid = 0xFFF; // only here for conformance, doesn't really have an sid
    private short             field_1_index_to_supbook;
    private short             field_2_index_to_first_supbook_sheet;
    private short             field_3_index_to_last_supbook_sheet;
    
    
    /** a Constractor for making new sub record
     */
    public ExternSheetSubRecord() {
    }
    
    /**
     * Constructs a Extern Sheet Sub Record record and sets its fields appropriately.
     *
     * @param id     id must be 0x18 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 ExternSheetSubRecord(short id, short size, byte[] data) {
        super(id, size, data);
    }
    
    /**
     * Constructs a Extern Sheet Sub Record record and sets its fields appropriately.
     *
     * @param id     id must be 0x18 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)
     * @param offset of the record's data
     */
    public ExternSheetSubRecord(short id, short size, byte[] data, int offset) {
        super(id, size, data, offset);
    }
    
    /** Sets the Index to the sup book
     * @param index sup book index
     */
    public void setIndexToSupBook(short index){
        field_1_index_to_supbook = index;
    }
    
    /** gets the index to sup book
     * @return sup book index
     */
    public short getIndexToSupBook(){
        return field_1_index_to_supbook;
    }
    
    /** sets the index to first sheet in supbook
     * @param index index to first sheet
     */
    public void setIndexToFirstSupBook(short index){
        field_2_index_to_first_supbook_sheet = index;
    }
    
    /** gets the index to first sheet from supbook
     * @return index to first supbook
     */
    public short getIndexToFirstSupBook(){
        return field_2_index_to_first_supbook_sheet;
    }
    
    /** sets the index to last sheet in supbook
     * @param index index to last sheet
     */
    public void setIndexToLastSupBook(short index){
        field_3_index_to_last_supbook_sheet = index;
    }
    
    /** gets the index to last sheet in supbook
     * @return index to last supbook
     */
    public short getIndexToLastSupBook(){
        return field_3_index_to_last_supbook_sheet;
    }
    
    /**
     * called by constructor, should throw runtime exception in the event of a
     * record passed with a differing ID.
     *
     * @param id alleged id for this record
     */
    protected void validateSid(short id) {
        // do nothing
    }
    
    /**
     * called by the constructor, should set class level fields.  Should throw
     * runtime exception for bad/icomplete data.
     *
     * @param data raw data
     * @param size size of data
     * @param offset of the record's data (provided a big array of the file)
     */
    protected void fillFields(byte [] data, short size, int offset) {
        field_1_index_to_supbook             = LittleEndian.getShort(data, 0 + offset);
        field_2_index_to_first_supbook_sheet = LittleEndian.getShort(data, 2 + offset);
        field_3_index_to_last_supbook_sheet  = LittleEndian.getShort(data, 4 + offset);
    }
    
    
    public String toString() {
        StringBuffer buffer = new StringBuffer();
        buffer.append("   supbookindex =").append(getIndexToSupBook()).append('\n');
        buffer.append("   1stsbindex   =").append(getIndexToFirstSupBook()).append('\n');
        buffer.append("   lastsbindex  =").append(getIndexToLastSupBook()).append('\n');
        return buffer.toString();
    }
    
    /**
     * called by the class that is responsible for writing this sucker.
     * Subclasses should implement this so that their data is passed back in a
     * byte array.
     *
     * @param offset to begin writing at
     * @param data byte array containing instance data
     * @return number of bytes written
     */
    public int serialize(int offset, byte [] data) {
        LittleEndian.putShort(data, 0 + offset, getIndexToSupBook());
        LittleEndian.putShort(data, 2 + offset, getIndexToFirstSupBook());
        LittleEndian.putShort(data, 4 + offset, getIndexToLastSupBook());
        
        return getRecordSize();
    }
    
    
    /** returns the record size
     */
    public int getRecordSize() {
        return 6;
    }
    
    /**
     * return the non static version of the id for this record.
     */
    public short getSid() {
        return this.sid;
    }
}