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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) 2006 - 2009 Pentaho Corporation and Contributors. All rights reserved.
*/
package org.pentaho.reporting.libraries.fonts.encoding;
import java.io.Writer;
import java.io.OutputStream;
import java.io.IOException;
import org.pentaho.reporting.libraries.fonts.encoding.manual.Utf16LE;
/**
*
* @author Thomas Morgner
*/
public class EncodedOutputStreamWriter extends Writer
{
private OutputStream outputStream;
private EncodingErrorType errorType;
private Encoding encoding;
private ByteBuffer buffer;
private CodePointBuffer text;
public EncodedOutputStreamWriter(final OutputStream outputStream,
final Encoding encoding,
final EncodingErrorType errorType)
{
this.encoding = encoding;
this.outputStream = outputStream;
this.errorType = errorType;
}
/**
* 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 java.io.IOException If an I/O error occurs
*/
public void write(final char[] cbuf, final int off, final int len) throws IOException
{
text = Utf16LE.getInstance().decode(cbuf, off, len, text);
if (buffer != null)
{
buffer.setCursor(0);
}
if (errorType == null)
{
buffer = encoding.encode(text, buffer);
}
else
{
buffer = encoding.encode(text, buffer, errorType);
}
outputStream.write(buffer.getData(), buffer.getOffset(), buffer.getLength());
}
/**
* 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 java.io.IOException If an I/O error occurs
*/
public void flush() throws IOException
{
outputStream.flush();
}
/**
* 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 java.io.IOException If an I/O error occurs
*/
public void close() throws IOException
{
outputStream.close();
}
}
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