362 lines
9.8 KiB
Java
Executable File
362 lines
9.8 KiB
Java
Executable File
package com.bytezone.diskbrowser.disk;
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import java.io.*;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.zip.GZIPInputStream;
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import com.bytezone.diskbrowser.FileFormatException;
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import com.bytezone.diskbrowser.NuFX;
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import com.bytezone.diskbrowser.cpm.CPMDisk;
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import com.bytezone.diskbrowser.dos.DosDisk;
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import com.bytezone.diskbrowser.infocom.InfocomDisk;
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import com.bytezone.diskbrowser.pascal.PascalDisk;
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import com.bytezone.diskbrowser.prodos.ProdosDisk;
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import com.bytezone.diskbrowser.wizardry.WizardryScenarioDisk;
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public class DiskFactory
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{
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private static boolean debug = false;
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private DiskFactory ()
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{
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}
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public static FormattedDisk createDisk (File file)
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{
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return createDisk (file.getAbsolutePath ());
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}
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public static FormattedDisk createDisk (String path)
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{
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if (debug)
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System.out.println ("Factory : " + path);
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File file = new File (path);
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if (!file.exists ())
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return null;
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String suffix = path.substring (path.lastIndexOf (".") + 1).toLowerCase ();
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Boolean compressed = false;
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Path p = Paths.get (path);
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if (suffix.equalsIgnoreCase ("sdk"))
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{
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try
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{
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NuFX nuFX = new NuFX (p);
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File tmp = File.createTempFile ("sdk", null);
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FileOutputStream fos = new FileOutputStream (tmp);
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fos.write (nuFX.getBuffer ());
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fos.close ();
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tmp.deleteOnExit ();
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file = tmp;
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suffix = "dsk";
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compressed = true;
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}
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catch (IOException e)
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{
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e.printStackTrace ();
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return null;
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}
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catch (FileFormatException e)
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{
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return null;
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}
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}
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else if (suffix.equalsIgnoreCase ("gz")) // will be .dsk.gz
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{
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try
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{
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InputStream in = new GZIPInputStream (new FileInputStream (path));
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File tmp = File.createTempFile ("gzip", null);
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FileOutputStream fos = new FileOutputStream (tmp);
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int bytesRead;
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byte[] buffer = new byte[1024];
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while ((bytesRead = in.read (buffer)) > 0)
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fos.write (buffer, 0, bytesRead);
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fos.close ();
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in.close ();
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tmp.deleteOnExit ();
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file = tmp;
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suffix = "dsk";
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compressed = true;
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}
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catch (IOException e)
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{
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e.printStackTrace ();
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return null;
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}
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}
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FormattedDisk disk = null;
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FormattedDisk disk2 = null;
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if (suffix.equals ("hdv"))
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return checkHardDisk (file);
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if (suffix.equals ("2mg"))
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return check2mgDisk (file);
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// if (((suffix.equals ("po") || suffix.equals ("dsk")) && file.length () > 116480))
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if (((suffix.equals ("po") || suffix.equals ("dsk")) && file.length () > 143360))
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{
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disk = checkHardDisk (file);
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if (disk != null)
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{
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if (compressed)
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disk.setOriginalPath (p);
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return disk;
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}
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}
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long length = file.length ();
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if (length != 143360 && length != 116480)
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{
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System.out.println ("invalid file length : " + file.length ());
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return null;
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}
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int sectors = file.length () == 143360 ? 16 : 13;
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if (true)
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{
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AppleDisk appleDisk = new AppleDisk (file, 35, sectors);
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long checksum = appleDisk.getBootChecksum ();
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if (checksum == 3176296590L || checksum == 108825457L || checksum == 1439356606L
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|| checksum == 1550012074L || checksum == 1614602459L || checksum == 940889336L
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|| checksum == 990032697 || checksum == 2936955085L || checksum == 1348415927L
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|| checksum == 3340889101L || checksum == 18315788L || checksum == 993895235L)
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{
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disk = checkDos (file);
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disk2 = checkProdos (file);
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if (disk2 != null && disk != null)
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disk = new DualDosDisk (disk, disk2);
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}
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else if (checksum == 1737448647L || checksum == 170399908L)
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{
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disk = checkProdos (file);
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disk2 = checkDos (file);
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if (disk2 != null && disk != null)
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disk = new DualDosDisk (disk, disk2);
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}
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else if (checksum == 2803644711L || checksum == 3317783349L || checksum == 1728863694L
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|| checksum == 198094178L)
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disk = checkPascalDisk (file);
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else if (checksum == 3028642627L || checksum == 2070151659L)
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disk = checkInfocomDisk (file);
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else if (checksum == 1212926910L || checksum == 1365043894L)
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disk = checkCPMDisk (file);
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if (disk != null)
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{
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if (compressed)
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disk.setOriginalPath (p);
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return disk;
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}
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// empty boot sector
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if (checksum != 227968344L && false)
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System.out.println ("Unknown checksum : " + checksum + " : " + path);
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}
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if (suffix.equals ("dsk") || suffix.equals ("do") || suffix.equals ("d13"))
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{
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disk = checkDos (file);
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if (disk == null)
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disk = checkProdos (file);
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else if (sectors == 16)
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{
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if (debug)
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System.out.println ("Checking DualDos disk");
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disk2 = checkProdos (file);
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if (disk2 != null)
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disk = new DualDosDisk (disk, disk2);
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}
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}
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else if (suffix.equals ("po"))
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{
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disk = checkProdos (file);
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if (disk == null)
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disk = checkDos (file);
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}
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if (disk == null)
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disk = checkPascalDisk (file);
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if (disk == null)
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{
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disk2 = checkInfocomDisk (file);
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if (disk2 != null)
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disk = disk2;
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}
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if (disk == null)
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disk = new DataDisk (new AppleDisk (file, 35, 16));
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if (debug)
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System.out.println (" Factory creating disk : "
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+ disk.getDisk ().getFile ().getAbsolutePath ());
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if (disk != null && compressed)
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disk.setOriginalPath (p);
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return disk;
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}
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private static DosDisk checkDos (File file)
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{
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if (debug)
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System.out.println ("Checking DOS disk");
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try
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{
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int sectors = file.length () == 143360 ? 16 : 13;
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AppleDisk disk = new AppleDisk (file, 35, sectors);
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if (DosDisk.isCorrectFormat (disk))
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return new DosDisk (disk);
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}
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catch (Exception e)
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{
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}
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if (debug)
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System.out.println ("Not a DOS disk");
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return null;
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}
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private static ProdosDisk checkProdos (File file)
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{
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if (debug)
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System.out.println ("Checking Prodos disk");
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try
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{
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AppleDisk disk = new AppleDisk (file, 35, 8);
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if (ProdosDisk.isCorrectFormat (disk))
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return new ProdosDisk (disk);
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}
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catch (Exception e)
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{
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}
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if (debug)
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System.out.println ("Not a Prodos disk");
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return null;
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}
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private static ProdosDisk checkHardDisk (File file)
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{
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if (debug)
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{
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System.out.println ("\nChecking Prodos hard disk");
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System.out.printf ("Total blocks : %f%n", (float) file.length () / 512);
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System.out.printf ("Total tracks : %f%n", (float) file.length () / 4096);
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System.out.printf ("File length : %d%n", file.length ());
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System.out.println ();
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}
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// assumes a sector is 512 bytes
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if ((file.length () % 512) != 0)
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{
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if (debug)
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System.out.printf ("file length not divisible by 512 : %d%n%", file.length ());
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return null;
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}
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// assumes a track is 4096 bytes
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// if ((file.length () % 4096) != 0)
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// {
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// if (debug)
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// {
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// System.out.printf ("file length not divisible by 4096 : %d%n%n", file.length ());
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// int usableLength = (int) (file.length () / 4096);
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// }
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// return null;
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// }
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try
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{
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AppleDisk disk = new AppleDisk (file, (int) file.length () / 4096, 8);
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if (ProdosDisk.isCorrectFormat (disk))
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{
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if (debug)
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{
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System.out.println ("Yay, it's a prodos hard disk");
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System.out.println (disk);
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}
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return new ProdosDisk (disk);
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}
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}
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catch (Exception e)
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{
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e.printStackTrace ();
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}
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if (debug)
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System.out.println ("Not a Prodos hard disk");
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return null;
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}
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private static FormattedDisk check2mgDisk (File file)
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{
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if (debug)
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System.out.println ("Checking Prodos 2mg disk");
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try
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{
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AppleDisk disk = new AppleDisk (file, 0, 0);
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if (ProdosDisk.isCorrectFormat (disk))
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return new ProdosDisk (disk);
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}
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catch (Exception e)
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{
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}
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if (debug)
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System.out.println ("Not a Prodos 2mg disk");
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return null;
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}
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private static FormattedDisk checkPascalDisk (File file)
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{
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if (debug)
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System.out.println ("Checking Pascal disk");
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AppleDisk disk = new AppleDisk (file, 35, 8);
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if (!PascalDisk.isCorrectFormat (disk, debug))
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return null;
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if (debug)
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System.out.println ("Pascal disk OK - Checking Wizardry disk");
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if (WizardryScenarioDisk.isWizardryFormat (disk, debug))
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return new WizardryScenarioDisk (disk);
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if (debug)
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System.out.println ("Not a Wizardry disk");
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return new PascalDisk (disk);
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}
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private static InfocomDisk checkInfocomDisk (File file)
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{
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if (debug)
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System.out.println ("Checking Infocom disk");
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AppleDisk disk = new AppleDisk (file, 35, 16);
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if (InfocomDisk.isCorrectFormat (disk))
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return new InfocomDisk (disk);
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if (debug)
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System.out.println ("Not an InfocomDisk disk");
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return null;
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}
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private static CPMDisk checkCPMDisk (File file)
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{
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if (debug)
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System.out.println ("Checking CPM disk");
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AppleDisk disk = new AppleDisk (file, 35, 16);
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if (CPMDisk.isCorrectFormat (disk))
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return new CPMDisk (disk);
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if (debug)
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System.out.println ("Not a CPM disk");
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return null;
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}
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} |