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/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2007 - 2009 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.base.util;
import java.io.Writer;
import java.io.IOException;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class StringBufferWriter extends Writer
{
private StringBuffer buffer;
public StringBufferWriter(final StringBuffer buffer)
{
if (buffer == null)
{
throw new NullPointerException();
}
this.buffer = buffer;
}
public StringBuffer getBuffer()
{
return buffer;
}
/**
* Write a single character. The character to be written is contained in
* the 16 low-order bits of the given integer value; the 16 high-order bits
* are ignored.
* <p/>
* <p> Subclasses that intend to support efficient single-character output
* should override this method.
*
* @param c int specifying a character to be written.
* @throws IOException If an I/O error occurs
*/
public void write(final int c) throws IOException
{
buffer.append((char) c);
}
/**
* Write a string.
*
* @param str String to be written
* @throws IOException If an I/O error occurs
*/
public void write(final String str) throws IOException
{
buffer.append(str);
}
/**
* Write a portion of an array of characters.
*
* @param cbuf Array of characters
* @param off Offset from which to start writing characters
* @param len Number of characters to write
* @throws IOException If an I/O error occurs
*/
public void write(final char[] cbuf, final int off, final int len) throws IOException
{
buffer.append(cbuf, off, len);
}
/**
* Flush the stream. If the stream has saved any characters from the
* various write() methods in a buffer, write them immediately to their
* intended destination. Then, if that destination is another character or
* byte stream, flush it. Thus one flush() invocation will flush all the
* buffers in a chain of Writers and OutputStreams.
* <p/>
* If the intended destination of this stream is an abstraction provided by
* the underlying operating system, for example a file, then flushing the
* stream guarantees only that bytes previously written to the stream are
* passed to the operating system for writing; it does not guarantee that
* they are actually written to a physical device such as a disk drive.
*
* @throws IOException If an I/O error occurs
*/
public void flush() throws IOException
{
}
/**
* Close the stream, flushing it first. Once a stream has been closed,
* further write() or flush() invocations will cause an IOException to be
* thrown. Closing a previously-closed stream, however, has no effect.
*
* @throws IOException If an I/O error occurs
*/
public void close() throws IOException
{
}
}
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