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JExcelApi is a java library which provides the ability to read, write, and modify Microsoft Excel spreadsheets.
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/*********************************************************************
*
* Copyright (C) 2007 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.write.biff;
import java.io.OutputStream;
import java.io.IOException;
/**
* Interface to abstract away an in-memory output or a temporary file
* output. Used by the File object
*/
interface ExcelDataOutput
{
/**
* Appends the bytes to the end of the output
*
* @param d the data to write to the end of the array
*/
public void write(byte[] bytes) throws IOException;
/**
* Gets the current position within the file
*
* @return the position within the file
*/
public int getPosition() throws IOException;
/**
* Sets the data at the specified position to the contents of the array
*
* @param pos the position to alter
* @param newdata the data to modify
*/
public void setData(byte[] newdata, int pos) throws IOException;
/**
* Writes the data to the output stream
*/
public void writeData(OutputStream out) throws IOException;
/**
* Called when the final compound file has been written
*/
public void close() throws IOException;
}