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/*
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* AppleCommander - An Apple ][ image utility.
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* Copyright (C) 2002 by Robert Greene
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* robgreene at users.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package com.webcodepro.applecommander.storage;
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import java.io.ByteArrayOutputStream;
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import java.io.FileInputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.util.zip.GZIPInputStream;
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/**
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* Helper class to load Apple2 disk images.
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* This class identifies the format, and the type of disk, loading the
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* appropriate disk management class.
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* <p>
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* Date created: Oct 3, 2002 10:54:34 PM
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* @author: Rob Greene
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* @deprecated
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*/
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public class DiskHelper {
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public static final int APPLE_140KB_DISK = 143360;
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public static final int APPLE_800KB_DISK = 819200;
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public static final int APPLE_800KB_2IMG_DISK = APPLE_800KB_DISK + 0x40;
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/**
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* Load an Apple2 disk from a given filename.
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* Determine type of disk, load approparitely, and
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* construct the appropriate Disk object.
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*/
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public static FormattedDisk load(String filename) throws IOException {
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if (filename == null) return null;
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byte[] diskImage = loadDisk(filename);
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Disk test = new Disk(filename, diskImage);
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if (test.isProdosFormat()) {
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return new ProdosFormatDisk(filename, diskImage);
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} else if (test.isDosFormat()) {
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return new DosFormatDisk(filename, diskImage);
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} else if (test.isPascalFormat()) {
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return new PascalFormatDisk(filename, diskImage);
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} else if (test.isRdosFormat()) {
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return new RdosFormatDisk(filename, diskImage);
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}
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// FIXME: Should return unknown disk Disk
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return null;
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}
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/**
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* Read in a disk in the same order as the image.
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* Disk itself will handle location translation.
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*/
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private static byte[] loadDisk(String filename) throws IOException {
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InputStream input = new FileInputStream(filename);
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if (filename.toLowerCase().endsWith(".gz")) {
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input = new GZIPInputStream(input);
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}
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int diskSize = APPLE_140KB_DISK;
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if (filename.toLowerCase().endsWith(".2img") || filename.toLowerCase().endsWith(".2mg")) {
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diskSize = APPLE_800KB_2IMG_DISK;
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}
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ByteArrayOutputStream diskImage =
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new ByteArrayOutputStream(diskSize);
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byte[] data = new byte[1024];
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int bytes;
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while ((bytes = input.read(data)) > 0) {
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diskImage.write(data, 0, bytes);
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}
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input.close();
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return diskImage.toByteArray();
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}
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}
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