nameptg.java

Office格式转换代码

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2003 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" and
 *    "Apache POI" must not be used to endorse or promote products
 *    derived from this software without prior written permission. For
 *    written permission, please contact [e-mail].
 *
 * 5. Products derived from this software may not be called "Apache",
 *    "Apache POI", nor may "Apache" appear in their name, without
 *    prior written permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

/*
 * NamePtg.java
 *
 * Created on November 25, 2001, 3:30 PM
 */
package org.apache.poi.hssf.record.formula;

import org.apache.poi.util.LittleEndian;
import org.apache.poi.hssf.model.Workbook;
import org.apache.poi.hssf.record.NameRecord;

/**
 *
 * @author  andy
 * @author Jason Height (jheight at chariot dot net dot au)
 */

public class NamePtg
    extends Ptg
{
    public final static short sid  = 0x23;
    private final static int  SIZE = 5;
    private short             field_1_label_index;
    private short             field_2_zero;   // reserved must be 0
    boolean xtra=false;


    private NamePtg() {
      //Required for clone methods
    }

    /** Creates new NamePtg */

    public NamePtg(String name, Workbook book)
    {
        final short n = (short) (book.getNumNames() + 1);
        NameRecord rec;
        for (short i = 1; i < n; i++) {
            rec = book.getNameRecord(i - 1);
            if (name.equals(rec.getNameText())) {
                field_1_label_index = i;
                return;
            }
        }
        rec = new NameRecord();
        rec.setNameText(name);
        rec.setNameTextLength((byte) name.length());
        book.addName(rec);
        field_1_label_index = n;
    }

    /** Creates new NamePtg */

    public NamePtg(byte [] data, int offset)
    {
        offset++;
        //field_1_ixti        = LittleEndian.getShort(data, offset);
        field_1_label_index = LittleEndian.getShort(data, offset );
        field_2_zero        = LittleEndian.getShort(data, offset + 2);
        //if (data[offset+6]==0) xtra=true;
    }

    public void writeBytes(byte [] array, int offset)
    {
        array[offset+0]= (byte) (sid + ptgClass);
        LittleEndian.putShort(array,offset+1,field_1_label_index);
        LittleEndian.putShort(array,offset+3, field_2_zero);
    }

    public int getSize()
    {
        return SIZE;
    }

    public String toFormulaString(Workbook book)
    {
        NameRecord rec = book.getNameRecord(field_1_label_index - 1);
        return rec.getNameText();
    }
    
    public byte getDefaultOperandClass() {return Ptg.CLASS_REF;}

    public Object clone() {
      NamePtg ptg = new NamePtg();
      ptg.field_1_label_index = field_1_label_index;
      ptg.field_2_zero = field_2_zero;
      return ptg;
    }
}