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Common Lisp implementation running on the JVM
There is a newer version: 1.9.2
/*
 * ByteArrayInputStream.java
 *
 * Copyright (C) 2010 Alessio Stalla
 * $Id$
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * As a special exception, the copyright holders of this library give you
 * permission to link this library with independent modules to produce an
 * executable, regardless of the license terms of these independent
 * modules, and to copy and distribute the resulting executable under
 * terms of your choice, provided that you also meet, for each linked
 * independent module, the terms and conditions of the license of that
 * module.  An independent module is a module which is not derived from
 * or based on this library.  If you modify this library, you may extend
 * this exception to your version of the library, but you are not
 * obligated to do so.  If you do not wish to do so, delete this
 * exception statement from your version.
 */

package org.armedbear.lisp;

import static org.armedbear.lisp.Lisp.*;

public final class ByteArrayInputStream extends Stream
{
    private final java.io.ByteArrayInputStream byteArrayInputStream;

    public ByteArrayInputStream(byte[] bytes)
    {
        this(bytes, UNSIGNED_BYTE_8); //Declared in Stream.java
    }

    ByteArrayInputStream(byte[] bytes, LispObject elementType)
    {
        super(Symbol.SYSTEM_STREAM);
        this.elementType = elementType;
        initAsBinaryInputStream(byteArrayInputStream = new java.io.ByteArrayInputStream(bytes));
    }

    @Override
    public LispObject typeOf()
    {
        return Symbol.STREAM; //TODO
    }

    @Override
    public LispObject classOf()
    {
        return BuiltInClass.STREAM; //TODO
    }

    @Override
    public LispObject typep(LispObject type)
    {
        return super.typep(type); //TODO
    }

    // ### %make-byte-array-input-stream
    // %make-byte-array-input-stream bytes &optional element-type => byte-array-input-stream
    private static final Primitive MAKE_BYTE_ARRAY_INPUT_STREAM =
        new Primitive("%make-byte-array-input-stream", PACKAGE_SYS, false,
                       "bytes &optional element-type")
    {

        @Override
        public LispObject execute(LispObject bytes) {
            return new ByteArrayInputStream((byte[]) bytes.javaInstance(byte[].class));
        }

        @Override
        public LispObject execute(LispObject bytes, LispObject elementType)
        {
            return new ByteArrayInputStream((byte[]) bytes.javaInstance(byte[].class), elementType);
        }
    };

}