/*!
* 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) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.libraries.base.util;
import java.io.IOException;
import java.io.Writer;
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 {
}
}