mirror of
https://github.com/dmolony/DiskBrowser.git
synced 2024-11-17 11:05:05 +00:00
277 lines
9.4 KiB
Java
Executable File
277 lines
9.4 KiB
Java
Executable File
package com.bytezone.diskbrowser.pascal;
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import java.awt.Color;
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import java.text.DateFormat;
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import java.util.ArrayList;
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import java.util.GregorianCalendar;
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import java.util.List;
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import javax.swing.tree.DefaultMutableTreeNode;
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import com.bytezone.diskbrowser.applefile.AppleFileSource;
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import com.bytezone.diskbrowser.applefile.BootSector;
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import com.bytezone.diskbrowser.applefile.Relocator;
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import com.bytezone.diskbrowser.disk.*;
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import com.bytezone.diskbrowser.gui.DataSource;
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import com.bytezone.diskbrowser.utilities.HexFormatter;
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public class PascalDisk extends AbstractFormattedDisk
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{
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static final int CATALOG_ENTRY_SIZE = 26;
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private final DateFormat df = DateFormat.getDateInstance (DateFormat.SHORT);
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private final VolumeEntry volumeEntry;
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private final PascalCatalogSector diskCatalogSector;
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protected Relocator relocator;
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final String[] fileTypes =
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{ "Volume", "Xdsk", "Code", "Text", "Info", "Data", "Graf", "Foto", "SecureDir" };
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SectorType diskBootSector = new SectorType ("Boot", Color.lightGray);
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SectorType catalogSector = new SectorType ("Catalog", Color.magenta);
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SectorType dataSector = new SectorType ("Data", new Color (0, 200, 0)); // green
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SectorType codeSector = new SectorType ("Code", Color.red);
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SectorType textSector = new SectorType ("Text", Color.blue);
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SectorType infoSector = new SectorType ("Info", Color.orange);
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SectorType grafSector = new SectorType ("Graf", Color.cyan);
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SectorType fotoSector = new SectorType ("Foto", Color.gray);
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public PascalDisk (Disk disk)
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{
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super (disk);
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sectorTypesList.add (diskBootSector);
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sectorTypesList.add (catalogSector);
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sectorTypesList.add (dataSector);
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sectorTypesList.add (codeSector);
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sectorTypesList.add (textSector);
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sectorTypesList.add (infoSector);
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sectorTypesList.add (grafSector);
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sectorTypesList.add (fotoSector);
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List<DiskAddress> blocks = disk.getDiskAddressList (0, 1); // B0, B1
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this.bootSector = new BootSector (disk, disk.readSectors (blocks), "Pascal");
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byte[] buffer = disk.readSector (2);
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byte[] data = new byte[CATALOG_ENTRY_SIZE];
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System.arraycopy (buffer, 0, data, 0, CATALOG_ENTRY_SIZE);
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volumeEntry = new VolumeEntry (this, data);
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for (int i = 0; i < 2; i++)
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if (!disk.isSectorEmpty (i))
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{
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sectorTypes[i] = diskBootSector;
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freeBlocks.set (i, false);
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}
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for (int i = 2; i < disk.getTotalBlocks (); i++)
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freeBlocks.set (i, true);
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List<DiskAddress> sectors = new ArrayList<DiskAddress> ();
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for (int i = 2; i < volumeEntry.lastBlock; i++)
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{
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DiskAddress da = disk.getDiskAddress (i);
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if (!disk.isSectorEmpty (da))
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sectorTypes[i] = catalogSector;
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sectors.add (da);
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freeBlocks.set (i, false);
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}
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diskCatalogSector =
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new PascalCatalogSector (disk, disk.readSectors (sectors), sectors);
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DefaultMutableTreeNode root = getCatalogTreeRoot ();
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DefaultMutableTreeNode volumeNode = new DefaultMutableTreeNode (volumeEntry);
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root.add (volumeNode);
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// read the catalog
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List<DiskAddress> addresses = new ArrayList<DiskAddress> ();
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for (int i = 2; i < volumeEntry.lastBlock; i++)
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addresses.add (disk.getDiskAddress (i));
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buffer = disk.readSectors (addresses);
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// loop through each catalog entry (what if there are deleted files?)
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for (int i = 1; i <= volumeEntry.totalFiles; i++)
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{
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int ptr = i * CATALOG_ENTRY_SIZE;
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data = new byte[CATALOG_ENTRY_SIZE];
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System.arraycopy (buffer, ptr, data, 0, CATALOG_ENTRY_SIZE);
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FileEntry fileEntry = new FileEntry (this, data);
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fileEntries.add (fileEntry);
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DefaultMutableTreeNode node = new DefaultMutableTreeNode (fileEntry);
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fileEntry.setNode (node);
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if (fileEntry.fileType == 2)
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{
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node.setAllowsChildren (true);
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fileEntry.getDataSource ();
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}
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else
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node.setAllowsChildren (false);
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volumeNode.add (node);
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for (int j = fileEntry.firstBlock; j < fileEntry.lastBlock; j++)
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freeBlocks.set (j, false);
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}
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volumeNode.setUserObject (getCatalog ());
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makeNodeVisible (volumeNode.getFirstLeaf ());
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}
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public static boolean isCorrectFormat (AppleDisk disk, boolean debug)
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{
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disk.setInterleave (1); // should only ever be Prodos
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if (checkFormat (disk, debug))
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return true;
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return false;
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}
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public static boolean checkFormat (AppleDisk disk, boolean debug)
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{
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byte[] buffer = disk.readSector (2);
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int nameLength = HexFormatter.intValue (buffer[6]);
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if (nameLength < 1 || nameLength > 7)
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{
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if (debug)
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System.out.println ("bad name length : " + nameLength);
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return false;
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}
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if (debug)
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{
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String name = HexFormatter.getPascalString (buffer, 6);
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System.out.println ("Name ok : " + name);
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}
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int from = HexFormatter.intValue (buffer[0], buffer[1]);
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int to = HexFormatter.intValue (buffer[2], buffer[3]);
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if (from != 0 || to != 6)
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{
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if (debug)
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System.out.printf ("from: %d, to: %d%n", from, to);
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return false; // will only work for floppies!
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}
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int blocks = HexFormatter.intValue (buffer[14], buffer[15]);
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if (blocks > 280)
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{
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if (debug)
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System.out.printf ("Blocks > 280: %d%n", blocks);
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// return false;
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}
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List<DiskAddress> addresses = new ArrayList<DiskAddress> ();
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for (int i = 2; i < to; i++)
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addresses.add (disk.getDiskAddress (i));
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buffer = disk.readSectors (addresses);
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int files = HexFormatter.intValue (buffer[16], buffer[17]);
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if (files < 0 || files > 77)
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{
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if (debug)
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System.out.printf ("Files: %d%n", files);
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return false;
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}
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if (debug)
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System.out.println ("Files found : " + files);
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for (int i = 1; i <= files; i++)
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{
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int ptr = i * 26;
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int firstBlock = HexFormatter.intValue (buffer[ptr], buffer[ptr + 1]);
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int lastBlock = HexFormatter.intValue (buffer[ptr + 2], buffer[ptr + 3]);
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int kind = HexFormatter.intValue (buffer[ptr + 4], buffer[ptr + 5]);
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if (lastBlock < firstBlock)
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return false;
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if (kind == 0)
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return false;
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nameLength = HexFormatter.intValue (buffer[ptr + 6]);
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if (nameLength < 1 || nameLength > 15)
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return false;
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int lastByte = HexFormatter.intValue (buffer[ptr + 22], buffer[ptr + 23]);
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GregorianCalendar date = HexFormatter.getPascalDate (buffer, 24);
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if (debug)
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System.out.printf ("%4d %4d %d %-15s %d %s%n", firstBlock, lastBlock, kind,
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new String (buffer, ptr + 7, nameLength), lastByte, date);
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}
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return true;
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}
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@Override
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public DataSource getFormattedSector (DiskAddress da)
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{
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SectorType st = sectorTypes[da.getBlock ()];
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if (st == diskBootSector)
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return bootSector;
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if (st == catalogSector)
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return diskCatalogSector;
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String name = getSectorFilename (da);
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if (name != null)
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return new DefaultSector (name, disk, disk.readSector (da), da);
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return super.getFormattedSector (da);
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}
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@Override
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public String getSectorFilename (DiskAddress da)
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{
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for (AppleFileSource ce : fileEntries)
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if (((CatalogEntry) ce).contains (da))
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return ((CatalogEntry) ce).name;
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return null;
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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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if (fileNo < 0 || fileNo >= fileEntries.size ())
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return null;
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return fileEntries.get (fileNo).getSectors ();
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}
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public DataSource getFile (int fileNo)
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{
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if (fileNo < 0 || fileNo >= fileEntries.size ())
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return null;
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return fileEntries.get (fileNo).getDataSource ();
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}
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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 newLine2 = newLine + newLine;
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String line = "---- --------------- ---- -------- ------- ---- ---- ----"
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+ newLine;
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String date =
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volumeEntry.date == null ? "--" : df.format (volumeEntry.date.getTime ());
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StringBuilder text = new StringBuilder ();
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text.append ("Disk : " + disk.getFile ().getAbsolutePath () + newLine2);
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text.append ("Volume : " + volumeEntry.name + newLine);
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text.append ("Date : " + date + newLine2);
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text.append (
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"Blks Name Type Date Length Frst Last Blks\n");
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text.append (line);
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int usedBlocks = 6;
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for (AppleFileSource fe : fileEntries)
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{
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FileEntry ce = (FileEntry) fe;
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int size = ce.lastBlock - ce.firstBlock;
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usedBlocks += size;
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date = ce.date == null ? "--" : df.format (ce.date.getTime ());
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int bytes = (size - 1) * 512 + ce.bytesUsedInLastBlock;
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text.append (String.format ("%4d %-15s %s %8s %,8d $%03X $%03X $%03X%n",
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size, ce.name, fileTypes[ce.fileType], date, bytes, ce.firstBlock, ce.lastBlock,
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size));
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}
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text.append (line);
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text.append (
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String.format ("Blocks free : %3d Blocks used : %3d Total blocks : %3d%n",
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(volumeEntry.totalBlocks - usedBlocks), usedBlocks, volumeEntry.totalBlocks));
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return new DefaultAppleFileSource (volumeEntry.name, text.toString (), this);
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}
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} |