133 lines
4.0 KiB
Java
133 lines
4.0 KiB
Java
package com.bytezone.diskbrowser.dos;
|
|
|
|
import com.bytezone.diskbrowser.applefile.DefaultAppleFile;
|
|
import com.bytezone.diskbrowser.disk.AppleDiskAddress;
|
|
import com.bytezone.diskbrowser.disk.DiskAddress;
|
|
import com.bytezone.diskbrowser.gui.DataSource;
|
|
|
|
// -----------------------------------------------------------------------------------//
|
|
class DeletedCatalogEntry extends AbstractCatalogEntry
|
|
// -----------------------------------------------------------------------------------//
|
|
{
|
|
boolean allSectorsAvailable = true;
|
|
boolean debug = false;
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
DeletedCatalogEntry (DosDisk dosDisk, DiskAddress catalogSector, byte[] entryBuffer,
|
|
int dosVersion)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
super (dosDisk, catalogSector, entryBuffer);
|
|
|
|
if (debug)
|
|
{
|
|
System.out.println ("Deleted file : " + name);
|
|
System.out.printf ("Reported size : %d%n", reportedSize);
|
|
}
|
|
|
|
DiskAddress da = null;
|
|
|
|
// Get address of first TS-list sector
|
|
if (dosVersion >= 0x41)
|
|
{
|
|
int track = entryBuffer[0] & 0x3F;
|
|
int sector = entryBuffer[1] & 0x1F;
|
|
da = disk.getDiskAddress (track, sector);
|
|
}
|
|
else
|
|
{
|
|
int track = entryBuffer[32] & 0xFF;
|
|
int sector = entryBuffer[1] & 0xFF;
|
|
da = disk.getDiskAddress (track, sector);
|
|
}
|
|
int totalBlocks = 0;
|
|
|
|
if (reportedSize <= 1 || !disk.isValidAddress (da.getTrackNo (), da.getSectorNo ()))
|
|
{
|
|
if (debug)
|
|
System.out.println ("invalid catalog entry");
|
|
allSectorsAvailable = false;
|
|
return;
|
|
}
|
|
|
|
// Loop through all TS-list sectors
|
|
loop: while (!da.isZero () || ((AppleDiskAddress) da).zeroFlag ())
|
|
{
|
|
if (!dosDisk.stillAvailable (da))
|
|
{
|
|
allSectorsAvailable = false;
|
|
break;
|
|
}
|
|
tsSectors.add (da);
|
|
totalBlocks++;
|
|
|
|
DiskAddress sectorDA = da;
|
|
byte[] sectorBuffer = disk.readBlock (da);
|
|
for (int i = 12, max = disk.getBlockSize (); i < max; i += 2)
|
|
{
|
|
da = getValidAddress (sectorBuffer, i);
|
|
if (da == null)
|
|
break loop;
|
|
if (!da.isZero () && debug)
|
|
System.out.println (da);
|
|
|
|
if (!da.isZero () || ((AppleDiskAddress) da).zeroFlag ())
|
|
{
|
|
if (!dosDisk.stillAvailable (da))
|
|
{
|
|
allSectorsAvailable = false;
|
|
break loop;
|
|
}
|
|
dataSectors.add (da);
|
|
totalBlocks++;
|
|
}
|
|
}
|
|
|
|
DiskAddress nextDa = getValidAddress (sectorBuffer, 1);
|
|
|
|
if (nextDa == null)
|
|
{
|
|
System.out.printf ("Next T/S list in sector %s is invalid : %02X, %02X%n",
|
|
sectorDA, sectorBuffer[1], sectorBuffer[2]);
|
|
break;
|
|
}
|
|
da = nextDa;
|
|
}
|
|
|
|
if (debug)
|
|
System.out.printf ("Total blocks recoverable : %d%n", totalBlocks);
|
|
if (totalBlocks != reportedSize)
|
|
allSectorsAvailable = false;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
@Override
|
|
public String getUniqueName ()
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
// name might not be unique if the file has been deleted
|
|
return "!" + name;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
@Override
|
|
public DataSource getDataSource ()
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
if (!allSectorsAvailable && appleFile == null)
|
|
{
|
|
DefaultAppleFile daf = new DefaultAppleFile (name, null);
|
|
daf.setText ("This file cannot be recovered");
|
|
appleFile = daf;
|
|
}
|
|
return super.getDataSource ();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
String getDetails ()
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
return String.format ("%-30s %s", name,
|
|
allSectorsAvailable ? "Recoverable" : "Not recoverable");
|
|
}
|
|
} |