/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
module dwt.internal.image.JPEGVariableSizeSegment;

import dwt.SWT;
import dwt.internal.image.JPEGSegment;
import dwt.internal.image.LEDataInputStream;

import tango.core.Exception;

abstract class JPEGVariableSizeSegment : JPEGSegment {

    public this(byte[] reference) {
        super(reference);
    }

    public this(LEDataInputStream byteStream) {
        try {
            byte[] header = new byte[4];
            byteStream.read(header);
            reference = header; // to use getSegmentLength()
            byte[] contents = new byte[getSegmentLength() + 2];
            contents[0] = header[0];
            contents[1] = header[1];
            contents[2] = header[2];
            contents[3] = header[3];
            byteStream.read(contents, 4, contents.length - 4);
            reference = contents;
        } catch (TracedException e) {
            SWT.error(SWT.ERROR_IO, e);
        }
    }
}