tidying

src/com/bytezone/diskbrowser/prodos/CatalogEntry.java

@@ -15,16 +15,19 @@ import com.bytezone.diskbrowser.utilities.Utility;
 abstract class CatalogEntry implements AppleFileSource
 // -----------------------------------------------------------------------------------//
 {
+  Disk disk;
   ProdosDisk parentDisk;
-  DirectoryHeader parentDirectory;
+
   String name;
   int storageType;
+
   LocalDateTime created;
   int version;
   int minVersion;
   int access;
+
   List<DiskAddress> dataBlocks = new ArrayList<> ();
-  Disk disk;
+  DirectoryHeader parentDirectory;
 
   // ---------------------------------------------------------------------------------//
   CatalogEntry (ProdosDisk parentDisk, byte[] entryBuffer)
@@ -32,8 +35,10 @@ abstract class CatalogEntry implements AppleFileSource
   {
     this.parentDisk = parentDisk;
     this.disk = parentDisk.getDisk ();
+
     name = HexFormatter.getString (entryBuffer, 1, entryBuffer[0] & 0x0F);
     storageType = (entryBuffer[0] & 0xF0) >> 4;
+
     created = Utility.getAppleDate (entryBuffer, 24);
     version = entryBuffer[28] & 0xFF;
     minVersion = entryBuffer[29] & 0xFF;
@@ -63,8 +68,8 @@ abstract class CatalogEntry implements AppleFileSource
   public boolean contains (DiskAddress da)
   // ---------------------------------------------------------------------------------//
   {
-    for (DiskAddress sector : dataBlocks)
-      if (sector.matches (da))
+    for (DiskAddress diskAddress : dataBlocks)
+      if (diskAddress.matches (da))
         return true;
     return false;
   }

src/com/bytezone/diskbrowser/prodos/ProdosConstants.java

@@ -88,6 +88,7 @@ public interface ProdosConstants
                                "CMD", "OVL", "UD2", "UD3", "UD4", "BAT", "UD6", "UD7", //
                                "PRG", "P16", "INT", "IVR", "BAS", "VAR", "REL", "SYS" };
 
+  static int BLOCK_SIZE = 0x200;
   static int ENTRY_SIZE = 0x27;
   static int ENTRIES_PER_BLOCK = 0x0D;
   static int BLOCK_ENTRY_SIZE = ENTRY_SIZE * ENTRIES_PER_BLOCK;

src/com/bytezone/diskbrowser/prodos/write/DirectoryHeader.java

@@ -1,6 +1,8 @@
 package com.bytezone.diskbrowser.prodos.write;
 
-import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.ENTRY_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRIES_PER_BLOCK;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRY_SIZE;
 import static com.bytezone.diskbrowser.utilities.Utility.getAppleDate;
 import static com.bytezone.diskbrowser.utilities.Utility.putAppleDate;
 import static com.bytezone.diskbrowser.utilities.Utility.readShort;
@@ -12,8 +14,6 @@ import java.time.LocalDateTime;
 public class DirectoryHeader
 // -----------------------------------------------------------------------------------//
 {
-  static final int BLOCK_SIZE = 512;
-
   ProdosDisk disk;
   byte[] buffer;
   int ptr;
@@ -25,7 +25,7 @@ public class DirectoryHeader
   byte minVersion = 0x00;
   byte access = (byte) 0xE3;
   byte entryLength = ENTRY_SIZE;
-  byte entriesPerBlock = 0x0D;
+  byte entriesPerBlock = ENTRIES_PER_BLOCK;
   int fileCount;
 
   // ---------------------------------------------------------------------------------//
@@ -44,6 +44,7 @@ public class DirectoryHeader
     storageType = (byte) ((buffer[ptr] & 0xF0) >>> 4);
     int nameLength = buffer[ptr] & 0x0F;
     fileName = new String (buffer, ptr + 1, nameLength);
+
     creationDate = getAppleDate (buffer, ptr + 0x18);
     version = buffer[ptr + 0x1C];
     minVersion = buffer[ptr + 0x1D];

src/com/bytezone/diskbrowser/prodos/write/FileEntry.java

@@ -1,6 +1,6 @@
 package com.bytezone.diskbrowser.prodos.write;
 
-import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.BLOCK_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
 import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.UNDERLINE;
 import static com.bytezone.diskbrowser.utilities.Utility.getAppleDate;
 import static com.bytezone.diskbrowser.utilities.Utility.putAppleDate;

src/com/bytezone/diskbrowser/prodos/write/IndexBlock.java

@@ -1,6 +1,6 @@
 package com.bytezone.diskbrowser.prodos.write;
 
-import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.BLOCK_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
 
 // -----------------------------------------------------------------------------------//
 public class IndexBlock

src/com/bytezone/diskbrowser/prodos/write/MasterIndexBlock.java

@@ -1,6 +1,6 @@
 package com.bytezone.diskbrowser.prodos.write;
 
-import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.BLOCK_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
 
 // -----------------------------------------------------------------------------------//
 public class MasterIndexBlock

src/com/bytezone/diskbrowser/prodos/write/ProdosDisk.java

@@ -1,6 +1,8 @@
 package com.bytezone.diskbrowser.prodos.write;
 
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
 import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRIES_PER_BLOCK;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRY_SIZE;
 import static com.bytezone.diskbrowser.prodos.ProdosConstants.FILE_TYPE_DIRECTORY;
 import static com.bytezone.diskbrowser.prodos.ProdosConstants.SUBDIRECTORY;
 import static com.bytezone.diskbrowser.prodos.ProdosConstants.SUBDIRECTORY_HEADER;
@@ -20,9 +22,9 @@ public class ProdosDisk
 {
   static final String UNDERLINE = "------------------------------------------------\n";
 
-  static final int BLOCK_SIZE = 512;
+  //  static final int BLOCK_SIZE = 512;
   private static final int CATALOG_SIZE = 4;
-  static final int ENTRY_SIZE = 0x27;
+  //  static final int ENTRY_SIZE = 0x27;
   private static final int BITS_PER_BLOCK = 8 * BLOCK_SIZE;
   static final String[] storageTypes =
       { "Deleted", "Seedling", "Sapling", "Tree", "", "", "", "", "", "", "", "", "",
@@ -117,7 +119,8 @@ public class ProdosDisk
 
   // ---------------------------------------------------------------------------------//
   public FileEntry addFile (String path, byte type, int auxType, LocalDateTime created,
-      LocalDateTime modified, byte[] dataBuffer) throws DiskFullException
+      LocalDateTime modified, byte[] dataBuffer)
+      throws DiskFullException, VolumeCatalogFullException
   // ---------------------------------------------------------------------------------//
   {
     // split the full path into an array of subdirectories and a file name
@@ -233,7 +236,8 @@ public class ProdosDisk
   }
 
   // ---------------------------------------------------------------------------------//
-  private FileEntry createSubdirectory (int blockNo, String name) throws DiskFullException
+  private FileEntry createSubdirectory (int blockNo, String name)
+      throws DiskFullException, VolumeCatalogFullException
   // ---------------------------------------------------------------------------------//
   {
     FileEntry fileEntry = findFreeSlot (blockNo);
@@ -296,7 +300,7 @@ public class ProdosDisk
   int allocateNextBlock () throws DiskFullException
   // ---------------------------------------------------------------------------------//
   {
-    int nextBlock = getFreeBlock ();
+    int nextBlock = volumeBitMap.nextSetBit (0);
     if (nextBlock < 0)
       throw new DiskFullException ("Disk Full");
 
@@ -306,17 +310,15 @@ public class ProdosDisk
   }
 
   // ---------------------------------------------------------------------------------//
-  private int getFreeBlock ()
+  private FileEntry findFreeSlot (int blockNo)
+      throws DiskFullException, VolumeCatalogFullException
   // ---------------------------------------------------------------------------------//
   {
-    return volumeBitMap.nextSetBit (0);
-  }
+    // check for Volume Directory Header full
+    if (blockNo == 2 && volumeDirectoryHeader.fileCount == 51)
+      throw new VolumeCatalogFullException ("Volume Directory is full");   // stupid
 
-  // ---------------------------------------------------------------------------------//
-  private FileEntry findFreeSlot (int blockNo) throws DiskFullException
-  // ---------------------------------------------------------------------------------//
-  {
-    // get the subdirectory header before the blockNo possibly changes
+    // get the subdirectory header before the blockNo can change
     SubdirectoryHeader subdirectoryHeader = subdirectoryHeaders.get (blockNo);
 
     int lastBlockNo = 0;      // used for linking directory blocks
@@ -338,27 +340,20 @@ public class ProdosDisk
       blockNo = readShort (buffer, offset + 2);      // next block
     } while (blockNo > 0);
 
+    if (subdirectoryHeader == null)         // this should be impossible
+      throw new VolumeCatalogFullException ("Volume Directory is full");
+
     // no free slots, so add a new catalog block
     blockNo = allocateNextBlock ();
 
-    // update file entry size (if not the Volume Directory)
-    if (subdirectoryHeader != null)
-    {
-      FileEntry fileEntry =
-          new FileEntry (this, buffer, subdirectoryHeader.parentPointer * BLOCK_SIZE
-              + (subdirectoryHeader.parentEntry - 1) * ENTRY_SIZE + 4);
-      fileEntry.read ();
-      fileEntry.blocksUsed++;
-      fileEntry.eof += BLOCK_SIZE;
-      fileEntry.modifiedDate = LocalDateTime.now ();
-      fileEntry.write ();
-    }
-
     // update links
     int ptr = blockNo * BLOCK_SIZE;
     writeShort (buffer, lastBlockNo * BLOCK_SIZE + 2, blockNo);   // point to next block
     writeShort (buffer, ptr, lastBlockNo);                        // point to previous block
 
+    // update parent's file entry size (this is the subdirectory file entry
+    subdirectoryHeader.updateParentFileEntry ();
+
     return new FileEntry (this, buffer, ptr + 4);      // first slot in new block
   }
 

src/com/bytezone/diskbrowser/prodos/write/SubdirectoryHeader.java

@@ -1,10 +1,13 @@
 package com.bytezone.diskbrowser.prodos.write;
 
-import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.ENTRY_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.BLOCK_SIZE;
+import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRY_SIZE;
 import static com.bytezone.diskbrowser.prodos.write.ProdosDisk.UNDERLINE;
 import static com.bytezone.diskbrowser.utilities.Utility.readShort;
 import static com.bytezone.diskbrowser.utilities.Utility.writeShort;
 
+import java.time.LocalDateTime;
+
 // -----------------------------------------------------------------------------------//
 public class SubdirectoryHeader extends DirectoryHeader
 // -----------------------------------------------------------------------------------//
@@ -23,6 +26,19 @@ public class SubdirectoryHeader extends DirectoryHeader
     access = (byte) 0xC3;
   }
 
+  // ---------------------------------------------------------------------------------//
+  void updateParentFileEntry ()
+  // ---------------------------------------------------------------------------------//
+  {
+    FileEntry fileEntry = new FileEntry (disk, buffer,
+        parentPointer * BLOCK_SIZE + (parentEntry - 1) * ENTRY_SIZE + 4);
+    fileEntry.read ();
+    fileEntry.blocksUsed++;
+    fileEntry.eof += BLOCK_SIZE;
+    fileEntry.modifiedDate = LocalDateTime.now ();
+    fileEntry.write ();
+  }
+
   // ---------------------------------------------------------------------------------//
   @Override
   void read ()

src/com/bytezone/diskbrowser/prodos/write/VolumeCatalogFullException.java

@@ -0,0 +1,9 @@
+package com.bytezone.diskbrowser.prodos.write;
+
+public class VolumeCatalogFullException extends Exception
+{
+  public VolumeCatalogFullException (String message)
+  {
+    super (message);
+  }
+}

src/com/bytezone/diskbrowser/utilities/NuFX.java

@@ -10,6 +10,7 @@ import java.util.List;
 import com.bytezone.diskbrowser.prodos.write.DiskFullException;
 import com.bytezone.diskbrowser.prodos.write.FileEntry;
 import com.bytezone.diskbrowser.prodos.write.ProdosDisk;
+import com.bytezone.diskbrowser.prodos.write.VolumeCatalogFullException;
 
 // -----------------------------------------------------------------------------------//
 public class NuFX
@@ -152,6 +153,11 @@ public class NuFX
         {
           System.out.println ("disk full: " + diskSize);    // go round again
         }
+        catch (VolumeCatalogFullException e)
+        {
+          e.printStackTrace ();
+          return null;
+        }
       }
     }