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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;
/**
* This is a wrapper around a byte buffer to allows streaming operations. This
* preserves my sanity, as managing arrays with irregular encodings is hell.
*
* @author Thomas Morgner
*/
public class CodePointStream
{
private CodePointBuffer buffer;
private int[] data;
private int cursor;
private int lastWritePos;
private int increment;
public CodePointStream(final CodePointBuffer buffer, final int increment)
{
if (buffer == null)
{
throw new NullPointerException();
}
if (increment < 1)
{
throw new IllegalArgumentException();
}
this.buffer = buffer;
this.data = buffer.getData();
this.cursor = buffer.getCursor();
this.lastWritePos = data.length - 1;
this.increment = increment;
}
public void put(final int b)
{
if (cursor >= lastWritePos)
{
this.buffer.ensureSize(cursor + increment);
this.data = buffer.getData();
this.lastWritePos = data.length - 1;
}
data[cursor] = b;
cursor += 1;
}
public void put(final int[] b)
{
if (cursor >= lastWritePos)
{
this.buffer.ensureSize(cursor + Math.max (increment, b.length));
this.data = buffer.getData();
this.lastWritePos = data.length - 1;
}
System.arraycopy(b, 0, data, cursor, b.length);
cursor += b.length;
}
public void close()
{
buffer.setCursor(cursor);
}
}
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