249 lines
9.4 KiB
Java
Executable File
249 lines
9.4 KiB
Java
Executable File
package com.bytezone.diskbrowser.prodos;
|
|
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.ENTRY_SIZE;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.FREE;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.GSOS_EXTENDED_FILE;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.PASCAL_ON_PROFILE;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.SAPLING;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.SEEDLING;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.SUBDIRECTORY;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.SUBDIRECTORY_HEADER;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.TREE;
|
|
import static com.bytezone.diskbrowser.prodos.ProdosConstants.VOLUME_HEADER;
|
|
|
|
import java.time.LocalDateTime;
|
|
|
|
import com.bytezone.diskbrowser.disk.AbstractSector;
|
|
import com.bytezone.diskbrowser.disk.Disk;
|
|
import com.bytezone.diskbrowser.disk.DiskAddress;
|
|
import com.bytezone.diskbrowser.utilities.HexFormatter;
|
|
import com.bytezone.diskbrowser.utilities.Utility;
|
|
|
|
// -----------------------------------------------------------------------------------//
|
|
class ProdosCatalogSector extends AbstractSector
|
|
// -----------------------------------------------------------------------------------//
|
|
{
|
|
private final ProdosDisk parent;
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
ProdosCatalogSector (ProdosDisk parent, Disk disk, byte[] buffer,
|
|
DiskAddress diskAddress)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
super (disk, buffer, diskAddress);
|
|
this.parent = parent;
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
@Override
|
|
public String createText ()
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
StringBuilder text = getHeader ("Volume Directory Block");
|
|
|
|
addTextAndDecimal (text, buffer, 0, 2, "Previous block");
|
|
addTextAndDecimal (text, buffer, 2, 2, "Next block");
|
|
|
|
for (int i = 4, max = buffer.length - ENTRY_SIZE; i <= max; i += ENTRY_SIZE)
|
|
{
|
|
if (buffer[i] == 0 && buffer[i + 1] == 0)
|
|
break;
|
|
text.append ("\n");
|
|
|
|
// first byte contains the file type (left nybble) and name length (right nybble)
|
|
int fileType = (buffer[i] & 0xF0) >> 4;
|
|
int nameLength = buffer[i] & 0x0F;
|
|
String hex1 = String.format ("%02X", buffer[i] & 0xF0);
|
|
String hex2 = String.format ("%02X", nameLength);
|
|
|
|
// deleted files set file type and name length to zero, but the file
|
|
// name is still valid
|
|
String typeText = hex1 + " = " + getType (buffer[i]);
|
|
if (fileType == 0)
|
|
addText (text, buffer, i, 1, typeText + " : " + getDeletedName (i + 1));
|
|
else
|
|
addText (text, buffer, i, 1, typeText + ", " + hex2 + " = Name length");
|
|
|
|
addText (text, buffer, i + 1, 4,
|
|
HexFormatter.getString (buffer, i + 1, nameLength));
|
|
|
|
switch (fileType)
|
|
{
|
|
case FREE:
|
|
case SEEDLING:
|
|
case SAPLING:
|
|
case TREE:
|
|
case PASCAL_ON_PROFILE:
|
|
case GSOS_EXTENDED_FILE:
|
|
case SUBDIRECTORY:
|
|
text.append (doFileDescription (i));
|
|
break;
|
|
case SUBDIRECTORY_HEADER:
|
|
text.append (doSubdirectoryHeader (i));
|
|
break;
|
|
case VOLUME_HEADER:
|
|
text.append (doVolumeDirectoryHeader (i));
|
|
break;
|
|
default:
|
|
text.append ("Unknown\n");
|
|
}
|
|
}
|
|
if (text.length () > 0)
|
|
text.deleteCharAt (text.length () - 1);
|
|
return text.toString ();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String doFileDescription (int offset)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
StringBuilder text = new StringBuilder ();
|
|
int fileType = buffer[offset + 16] & 0xFF;
|
|
int auxType = Utility.getShort (buffer, offset + 31);
|
|
addText (text, buffer, offset + 16, 1,
|
|
"File type (" + ProdosConstants.fileTypes[fileType] + ")");
|
|
addTextAndDecimal (text, buffer, offset + 17, 2, "Key pointer");
|
|
addTextAndDecimal (text, buffer, offset + 19, 2, "Blocks used");
|
|
addTextAndDecimal (text, buffer, offset + 21, 3, "EOF");
|
|
|
|
LocalDateTime created = Utility.getAppleDate (buffer, offset + 24);
|
|
String dateC = created == null ? "" : created.format (ProdosDisk.df);
|
|
addText (text, buffer, offset + 24, 4, "Creation date : " + dateC);
|
|
|
|
addTextAndDecimal (text, buffer, offset + 28, 1, "Version");
|
|
addText (text, buffer, offset + 29, 1, "Minimum version");
|
|
addText (text, buffer, offset + 30, 1, "Access");
|
|
addTextAndDecimal (text, buffer, offset + 31, 2,
|
|
"Auxilliary type - " + getAuxilliaryText (fileType, auxType));
|
|
|
|
LocalDateTime modified = Utility.getAppleDate (buffer, offset + 33);
|
|
String dateM = modified == null ? "" : modified.format (ProdosDisk.df);
|
|
addText (text, buffer, offset + 33, 4, "Modification date : " + dateM);
|
|
|
|
addTextAndDecimal (text, buffer, offset + 37, 2, "Header pointer");
|
|
return text.toString ();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String doVolumeDirectoryHeader (int offset)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
StringBuilder text = new StringBuilder ();
|
|
|
|
addText (text, buffer, offset + 16, 4, "Not used");
|
|
text.append (getCommonHeader (offset));
|
|
addTextAndDecimal (text, buffer, offset + 35, 2, "Bit map pointer");
|
|
addTextAndDecimal (text, buffer, offset + 37, 2, "Total blocks");
|
|
|
|
return text.toString ();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String doSubdirectoryHeader (int offset)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
StringBuilder text = new StringBuilder ();
|
|
|
|
addText (text, buffer, offset + 16, 1, "Hex $75");
|
|
addText (text, buffer, offset + 17, 3, "Not used");
|
|
text.append (getCommonHeader (offset));
|
|
addTextAndDecimal (text, buffer, offset + 35, 2, "Parent block");
|
|
addTextAndDecimal (text, buffer, offset + 37, 1, "Parent entry number");
|
|
addTextAndDecimal (text, buffer, offset + 38, 1, "Parent entry length");
|
|
|
|
return text.toString ();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String getCommonHeader (int offset)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
StringBuilder text = new StringBuilder ();
|
|
|
|
addText (text, buffer, offset + 20, 4, "Not used");
|
|
LocalDateTime created = Utility.getAppleDate (buffer, offset + 24);
|
|
String dateC = created == null ? "" : created.format (ProdosDisk.df);
|
|
addText (text, buffer, offset + 24, 4, "Creation date : " + dateC);
|
|
|
|
addText (text, buffer, offset + 28, 1, "Prodos version");
|
|
addText (text, buffer, offset + 29, 1, "Minimum version");
|
|
addText (text, buffer, offset + 30, 1, "Access");
|
|
|
|
addTextAndDecimal (text, buffer, offset + 31, 1, "Entry length");
|
|
addTextAndDecimal (text, buffer, offset + 32, 1, "Entries per block");
|
|
addTextAndDecimal (text, buffer, offset + 33, 2, "File count");
|
|
|
|
return text.toString ();
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String getAuxilliaryText (int fileType, int auxType)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
switch (fileType)
|
|
{
|
|
case 0x04:
|
|
return "record length";
|
|
case 0xFD:
|
|
return "address of stored variables";
|
|
case 0x06:
|
|
case 0xFC:
|
|
case 0xFF:
|
|
return "load address";
|
|
case 0xB3:
|
|
return "forked";
|
|
case 0xC1:
|
|
return "PIC";
|
|
case 0xC8:
|
|
return auxType == 0 ? "QuickDraw bitmap font"
|
|
: auxType == 1 ? "Pointless truetype font" : "??";
|
|
default:
|
|
return "???";
|
|
}
|
|
}
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String getType (byte flag)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
switch ((flag & 0xF0) >> 4)
|
|
{
|
|
case FREE:
|
|
return "Deleted";
|
|
case SEEDLING:
|
|
return "Seedling";
|
|
case SAPLING:
|
|
return "Sapling";
|
|
case TREE:
|
|
return "Tree";
|
|
case PASCAL_ON_PROFILE:
|
|
return "Pascal area on a Profile HD";
|
|
case GSOS_EXTENDED_FILE:
|
|
return "GS/OS extended file";
|
|
case SUBDIRECTORY:
|
|
return "Subdirectory";
|
|
case SUBDIRECTORY_HEADER:
|
|
return "Subdirectory Header";
|
|
case VOLUME_HEADER:
|
|
return "Volume Directory Header";
|
|
default:
|
|
return "???";
|
|
}
|
|
}
|
|
|
|
// Deleted files leave the name intact, but set the name length to zero
|
|
// Also - the pointers in the master blocks of a sapling or tree file are
|
|
// swapped when the file is deleted.
|
|
|
|
// ---------------------------------------------------------------------------------//
|
|
private String getDeletedName (int offset)
|
|
// ---------------------------------------------------------------------------------//
|
|
{
|
|
StringBuilder text = new StringBuilder ();
|
|
|
|
for (int i = offset, max = offset + 15; i < max && buffer[i] != 0; i++)
|
|
text.append ((char) (buffer[i] & 0xFF));
|
|
|
|
return text.toString ();
|
|
}
|
|
} |