105 lines
2.8 KiB
Java
105 lines
2.8 KiB
Java
package com.bytezone.diskbrowser.dos;
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import com.bytezone.diskbrowser.applefile.DefaultAppleFile;
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import com.bytezone.diskbrowser.disk.DiskAddress;
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import com.bytezone.diskbrowser.gui.DataSource;
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class DeletedCatalogEntry extends AbstractCatalogEntry
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{
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boolean allSectorsAvailable = true;
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boolean debug = false;
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public DeletedCatalogEntry (DosDisk dosDisk, DiskAddress catalogSector, byte[] entryBuffer)
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{
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super (dosDisk, catalogSector, entryBuffer);
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// reportedSize = HexFormatter.intValue (entryBuffer[33], entryBuffer[34]);
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if (debug)
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{
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System.out.println ("Deleted file : " + name);
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System.out.printf ("Reported size : %d%n", reportedSize);
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}
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if (reportedSize <= 1 || !disk.isValidAddress (entryBuffer[32], entryBuffer[1]))
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{
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if (debug)
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System.out.println ("invalid catalog entry");
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allSectorsAvailable = false;
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return;
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}
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// Get address of first TS-list sector
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DiskAddress da = disk.getDiskAddress (entryBuffer[32], entryBuffer[1]);
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int totalBlocks = 0;
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// Loop through all TS-list sectors
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loop: while (da.getBlock () > 0)
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{
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if (!dosDisk.stillAvailable (da))
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{
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allSectorsAvailable = false;
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break;
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}
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tsSectors.add (da);
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totalBlocks++;
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byte[] sectorBuffer = disk.readSector (da);
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for (int i = 12, max = disk.getBlockSize (); i < max; i += 2)
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{
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da = getValidAddress (sectorBuffer, i);
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if (da == null)
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break loop;
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if (da.getBlock () > 0 && debug)
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System.out.println (da);
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if (da.getBlock () > 0)
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{
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if (!dosDisk.stillAvailable (da))
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{
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allSectorsAvailable = false;
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break loop;
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}
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dataSectors.add (da);
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totalBlocks++;
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}
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}
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da = getValidAddress (sectorBuffer, 1);
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if (da == null)
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{
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System.out.printf ("Next T/S list in sector %s is invalid : %02X, %02X%n", da,
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sectorBuffer[1], sectorBuffer[2]);
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break;
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}
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}
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if (debug)
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System.out.printf ("Total blocks recoverable : %d%n", totalBlocks);
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if (totalBlocks != reportedSize)
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allSectorsAvailable = false;
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}
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@Override
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public String getUniqueName ()
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{
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// name might not be unique if the file has been deleted
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return "!" + name;
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}
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@Override
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public DataSource getDataSource ()
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{
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if (!allSectorsAvailable && appleFile == null)
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{
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DefaultAppleFile daf = new DefaultAppleFile (name, null);
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daf.setText ("This file cannot be recovered");
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appleFile = daf;
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}
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return super.getDataSource ();
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}
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public String getDetails ()
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{
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return String.format ("%-30s %s", name, allSectorsAvailable ? "Recoverable"
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: "Not recoverable");
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}
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} |