Apple-2-Tools/dmolony-DiskBrowser
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link CPM directory entries

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This commit is contained in:
Denis Molony 2016-02-25 08:27:03 +11:00
parent 8afac62b00
commit 1d7b12bcc9
2 changed files with 54 additions and 3 deletions
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42
src/com/bytezone/diskbrowser/cpm/CPMDisk.java
View File

@ -1,6 +1,7 @@
package com.bytezone.diskbrowser.cpm;
import java.awt.Color;
import java.util.ArrayList;
import java.util.List;
import com.bytezone.diskbrowser.applefile.BootSector;
@ -17,6 +18,7 @@ public class CPMDisk extends AbstractFormattedDisk
public final SectorType cpmSector = new SectorType ("CPM", Color.lightGray);
private int version; // http://www.seasip.info/Cpm/format22.html
private final List<DirectoryEntry> directoryEntries = new ArrayList<DirectoryEntry> ();
public CPMDisk (Disk disk)
{
@ -37,7 +39,24 @@ public class CPMDisk extends AbstractFormattedDisk
{
DiskAddress da = disk.getDiskAddress (3, sector);
sectorTypes[da.getBlock ()] = catalogSector;
buffer = disk.readSector (da);
for (int i = 0; i < buffer.length; i += 32)
{
if (buffer[i] != 0 && buffer[i] != (byte) 0xE5)
break;
if (buffer[i] == 0)
{
DirectoryEntry entry = new DirectoryEntry (buffer, i);
DirectoryEntry parent = findParent (entry);
if (parent == null)
directoryEntries.add (entry);
else
parent.add (entry);
}
}
}
listEntries ();
}
@Override
@ -46,6 +65,22 @@ public class CPMDisk extends AbstractFormattedDisk
return null;
}
public void listEntries ()
{
for (DirectoryEntry entry : directoryEntries)
System.out.println (entry);
}
private DirectoryEntry findParent (DirectoryEntry child)
{
for (DirectoryEntry entry : directoryEntries)
{
if (entry.matches (child))
return entry;
}
return null;
}
public static boolean isCorrectFormat (AppleDisk disk)
{
disk.setInterleave (3);
@ -67,10 +102,11 @@ public class CPMDisk extends AbstractFormattedDisk
buffer = disk.readSector (3, sector);
for (int i = 0; i < buffer.length; i += 32)
{
if (buffer[i] != 0 && buffer[i] != (byte) 0xE5)
int val = buffer[i] & 0xFF;
if (val > 31 && val != 0xE5)
return false;
if (buffer[i] == 0)
System.out.println (new DirectoryEntry (buffer, i));
// if (buffer[i] == 0)
// System.out.println (new DirectoryEntry (buffer, i));
}
}

15
src/com/bytezone/diskbrowser/cpm/DirectoryEntry.java
View File

@ -1,5 +1,8 @@
package com.bytezone.diskbrowser.cpm;
import java.util.ArrayList;
import java.util.List;
import com.bytezone.diskbrowser.utilities.HexFormatter;
public class DirectoryEntry
@ -12,6 +15,7 @@ public class DirectoryEntry
private final int s2;
private final int rc;
private final byte[] blockList = new byte[16];
private final List<DirectoryEntry> entries = new ArrayList<DirectoryEntry> ();
public DirectoryEntry (byte[] buffer, int offset)
{
@ -31,6 +35,11 @@ public class DirectoryEntry
&& type.equals (directoryEntry.type);
}
public void add (DirectoryEntry entry)
{
entries.add (entry);
}
@Override
public String toString ()
{
@ -48,6 +57,12 @@ public class DirectoryEntry
String bytes = HexFormatter.getHexString (blockList, 0, 16);
text.append (String.format ("Allocation ..... %s%n", bytes));
for (DirectoryEntry entry : entries)
{
bytes = HexFormatter.getHexString (entry.blockList, 0, 16);
text.append (String.format (" %s%n", bytes));
}
return text.toString ();
}
}