/*********************************************************************
*
* Copyright (C) 2002 Andrew Khan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
package jxl.biff.formula;
import jxl.common.Logger;
import jxl.WorkbookSettings;
import jxl.biff.IntegerHelper;
import jxl.biff.StringHelper;
/**
* A string constant operand in a formula
*/
class StringValue extends Operand implements ParsedThing
{
/**
* The logger
*/
private final static Logger logger = Logger.getLogger(StringValue.class);
/**
* The string value
*/
private String value;
/**
* The workbook settings
*/
private WorkbookSettings settings;
/**
* Constructor
*/
public StringValue(WorkbookSettings ws)
{
settings = ws;
}
/**
* Constructor used when parsing a string formula
*
* @param s the string token, including quote marks
*/
public StringValue(String s)
{
// remove the quotes
value = s;
}
/**
* Reads the ptg data from the array starting at the specified position
*
* @param data the RPN array
* @param pos the current position in the array, excluding the ptg identifier
* @return the number of bytes read
*/
public int read(byte[] data, int pos)
{
int length = data[pos] & 0xff;
int consumed = 2;
if ((data[pos+1] & 0x01) == 0)
{
value = StringHelper.getString(data, length, pos+2, settings);
consumed += length;
}
else
{
value = StringHelper.getUnicodeString(data, length, pos+2);
consumed += length * 2;
}
return consumed;
}
/**
* Gets the token representation of this item in RPN
*
* @return the bytes applicable to this formula
*/
byte[] getBytes()
{
byte[] data = new byte[value.length() * 2 + 3];
data[0] = Token.STRING.getCode();
data[1] = (byte) (value.length());
data[2] = 0x01;
StringHelper.getUnicodeBytes(value, data, 3);
return data;
}
/**
* Abstract method implementation to get the string equivalent of this
* token
*
* @param buf the string to append to
*/
public void getString(StringBuffer buf)
{
buf.append("\"");
buf.append(value);
buf.append("\"");
}
/**
* If this formula was on an imported sheet, check that
* cell references to another sheet are warned appropriately
* Does nothing
*/
void handleImportedCellReferences()
{
}
}
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