2015-06-01 09:35:51 +00:00
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package com.bytezone.diskbrowser.cpm;
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import java.awt.Color;
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2016-02-24 21:27:03 +00:00
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import java.util.ArrayList;
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2015-06-01 09:35:51 +00:00
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import java.util.List;
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2016-02-25 01:27:22 +00:00
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import com.bytezone.diskbrowser.applefile.AppleFileSource;
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2015-06-01 09:35:51 +00:00
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import com.bytezone.diskbrowser.applefile.BootSector;
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2016-02-25 01:27:22 +00:00
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import com.bytezone.diskbrowser.disk.*;
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2015-06-01 09:35:51 +00:00
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public class CPMDisk extends AbstractFormattedDisk
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{
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private final Color green = new Color (0, 200, 0);
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public final SectorType catalogSector = new SectorType ("Catalog", green);
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public final SectorType cpmSector = new SectorType ("CPM", Color.lightGray);
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2016-02-24 12:32:36 +00:00
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private int version; // http://www.seasip.info/Cpm/format22.html
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2016-02-24 21:27:03 +00:00
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private final List<DirectoryEntry> directoryEntries = new ArrayList<DirectoryEntry> ();
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2016-02-24 12:32:36 +00:00
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2015-06-01 09:35:51 +00:00
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public CPMDisk (Disk disk)
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{
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super (disk);
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sectorTypesList.add (catalogSector);
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sectorTypesList.add (cpmSector);
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byte[] sectorBuffer = disk.readSector (0, 0); // Boot sector
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bootSector = new BootSector (disk, sectorBuffer, "CPM");
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sectorTypes[0] = cpmSector;
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2016-02-24 12:32:36 +00:00
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byte[] buffer = disk.readSector (0, 8);
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String text = new String (buffer, 16, 24);
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if ("DIR ERA TYPESAVEREN USER".equals (text))
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version = buffer[41] & 0xFF;
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2015-06-01 09:35:51 +00:00
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for (int sector = 0; sector < 8; sector++)
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{
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DiskAddress da = disk.getDiskAddress (3, sector);
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sectorTypes[da.getBlock ()] = catalogSector;
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2016-02-24 21:27:03 +00:00
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buffer = disk.readSector (da);
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for (int i = 0; i < buffer.length; i += 32)
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{
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if (buffer[i] != 0 && buffer[i] != (byte) 0xE5)
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break;
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if (buffer[i] == 0)
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{
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DirectoryEntry entry = new DirectoryEntry (buffer, i);
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DirectoryEntry parent = findParent (entry);
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if (parent == null)
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directoryEntries.add (entry);
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else
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parent.add (entry);
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}
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}
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2015-06-01 09:35:51 +00:00
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}
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2016-02-25 01:27:22 +00:00
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// listEntries ();
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2015-06-01 09:35:51 +00:00
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}
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@Override
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public List<DiskAddress> getFileSectors (int fileNo)
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{
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return null;
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}
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2016-02-24 21:27:03 +00:00
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public void listEntries ()
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{
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for (DirectoryEntry entry : directoryEntries)
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System.out.println (entry);
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}
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private DirectoryEntry findParent (DirectoryEntry child)
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{
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for (DirectoryEntry entry : directoryEntries)
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{
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if (entry.matches (child))
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return entry;
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}
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return null;
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}
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2016-02-25 01:27:22 +00:00
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@Override
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public AppleFileSource getCatalog ()
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{
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String newLine = String.format ("%n");
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String line = "--- --------- ----" + newLine;
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StringBuilder text = new StringBuilder ();
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text.append (String.format ("Disk : %s%n%n", getAbsolutePath ()));
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text.append ("User Name Type" + newLine);
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text.append (line);
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for (DirectoryEntry entry : directoryEntries)
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{
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text.append (entry.line ());
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text.append (newLine);
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}
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return new DefaultAppleFileSource ("CPM Disk ", text.toString (), this);
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}
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2015-06-01 09:35:51 +00:00
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public static boolean isCorrectFormat (AppleDisk disk)
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{
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disk.setInterleave (3);
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2016-02-24 12:32:36 +00:00
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byte[] buffer = disk.readSector (0, 8);
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String text = new String (buffer, 16, 24);
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if ("DIR ERA TYPESAVEREN USER".equals (text))
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return true;
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buffer = disk.readSector (0, 4);
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text = new String (buffer, 16, 24);
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if ("DIR ERA TYPESAVEREN USER".equals (text))
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return true;
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2015-06-01 09:35:51 +00:00
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for (int sector = 0; sector < 8; sector++)
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{
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2016-02-24 12:32:36 +00:00
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buffer = disk.readSector (3, sector);
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2015-06-01 09:35:51 +00:00
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for (int i = 0; i < buffer.length; i += 32)
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{
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2016-02-24 21:27:03 +00:00
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int val = buffer[i] & 0xFF;
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if (val > 31 && val != 0xE5)
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2015-06-01 09:35:51 +00:00
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return false;
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}
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}
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return true;
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}
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}
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