277 lines
8.9 KiB
Java
277 lines
8.9 KiB
Java
package com.bytezone.diskbrowser.dos;
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import java.util.ArrayList;
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import java.util.List;
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import com.bytezone.diskbrowser.HexFormatter;
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import com.bytezone.diskbrowser.applefile.*;
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import com.bytezone.diskbrowser.disk.Disk;
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import com.bytezone.diskbrowser.disk.DiskAddress;
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import com.bytezone.diskbrowser.disk.FormattedDisk;
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import com.bytezone.diskbrowser.dos.DosDisk.FileType;
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import com.bytezone.diskbrowser.gui.DataSource;
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abstract class AbstractCatalogEntry implements AppleFileSource
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{
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Disk disk;
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DosDisk dosDisk;
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String name;
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String catalogName;
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FileType fileType;
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int reportedSize;
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boolean locked;
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protected DataSource appleFile;
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protected DiskAddress catalogSectorDA;
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protected final List<DiskAddress> dataSectors = new ArrayList<DiskAddress> ();
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protected final List<DiskAddress> tsSectors = new ArrayList<DiskAddress> ();
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public AbstractCatalogEntry (DosDisk dosDisk, DiskAddress catalogSector, byte[] entryBuffer)
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{
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this.dosDisk = dosDisk;
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this.disk = dosDisk.getDisk ();
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this.catalogSectorDA = catalogSector;
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reportedSize = HexFormatter.intValue (entryBuffer[33], entryBuffer[34]);
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int type = entryBuffer[2] & 0xFF;
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locked = (type & 0x80) > 0;
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this.disk = dosDisk.getDisk ();
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if ((type & 0x7F) == 0)
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fileType = FileType.Text;
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else if ((type & 0x01) > 0)
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fileType = FileType.IntegerBasic;
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else if ((type & 0x02) > 0)
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fileType = FileType.ApplesoftBasic;
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else if ((type & 0x04) > 0)
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fileType = FileType.Binary;
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else if ((type & 0x08) > 0)
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fileType = FileType.SS;
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else if ((type & 0x10) > 0)
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fileType = FileType.Relocatable;
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else if ((type & 0x20) > 0)
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fileType = FileType.AA;
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else if ((type & 0x40) > 0)
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fileType = FileType.BB;
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else
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System.out.println ("Unknown file type : " + (type & 0x7F));
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name = getName ("", entryBuffer);
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// CATALOG command only formats the LO byte - see Beneath Apple DOS pp4-6
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String base =
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String.format ("%s%s %03d ", (locked) ? "*" : " ", getFileType (),
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(entryBuffer[33] & 0xFF));
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catalogName = getName (base, entryBuffer);
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}
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private String getName (String base, byte[] buffer)
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{
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StringBuilder text = new StringBuilder (base);
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int max = buffer[0] == (byte) 0xFF ? 32 : 33;
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for (int i = 3; i < max; i++)
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{
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int c = buffer[i] & 0xFF;
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if (c == 136 && !base.isEmpty ()) // allow backspaces
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{
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if (text.length () > 0)
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text.deleteCharAt (text.length () - 1);
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continue;
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}
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if (c > 127)
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c -= c < 160 ? 64 : 128;
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if (c < 32)
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text.append ("^" + (char) (c + 64)); // non-printable ascii
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else
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text.append ((char) c); // standard ascii
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}
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while (text.length () > 0 && text.charAt (text.length () - 1) == ' ')
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text.deleteCharAt (text.length () - 1); // rtrim()
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return text.toString ();
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}
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protected String getFileType ()
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{
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switch (this.fileType)
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{
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case Text:
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return "T";
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case IntegerBasic:
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return "I";
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case ApplesoftBasic:
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return "A";
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case Binary:
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return "B";
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case SS: // what is this?
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return "S";
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case Relocatable:
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return "R";
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case AA: // what is this?
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return "A";
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case BB: // what is this?
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return "B";
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default:
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System.out.println ("Unknown file type : " + fileType);
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return "?";
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}
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}
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// maybe this should be in the FormattedDisk
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// maybe DiskAddress should have a 'valid' flag
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protected DiskAddress getValidAddress (byte[] buffer, int offset)
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{
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if (disk.isValidAddress (buffer[offset], buffer[offset + 1]))
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return disk.getDiskAddress (buffer[offset], buffer[offset + 1]);
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return null;
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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 (appleFile != null)
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return appleFile;
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byte[] buffer = disk.readSectors (dataSectors);
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int reportedLength;
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if (buffer.length == 0)
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{
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appleFile = new DefaultAppleFile (name, buffer);
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return appleFile;
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}
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try
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{
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switch (this.fileType)
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{
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case Text:
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if (VisicalcFile.isVisicalcFile (buffer))
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appleFile = new VisicalcFile (name, buffer);
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else
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appleFile = new TextFile (name, buffer);
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break;
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case IntegerBasic:
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reportedLength = HexFormatter.intValue (buffer[0], buffer[1]);
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byte[] exactBuffer = new byte[reportedLength];
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System.arraycopy (buffer, 2, exactBuffer, 0, reportedLength);
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appleFile = new IntegerBasicProgram (name, exactBuffer);
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break;
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case ApplesoftBasic:
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reportedLength = HexFormatter.intValue (buffer[0], buffer[1]);
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exactBuffer = new byte[reportedLength];
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if (reportedLength > buffer.length)
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reportedLength = buffer.length - 2;
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System.arraycopy (buffer, 2, exactBuffer, 0, reportedLength);
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// appleFile = new ApplesoftBasicProgram (name, exactBuffer);
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appleFile = new BasicProgram (name, exactBuffer);
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break;
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case Binary: // binary file
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case Relocatable: // relocatable binary file
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if (buffer.length == 0)
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appleFile = new AssemblerProgram (name, buffer, 0);
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else
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{
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int loadAddress = HexFormatter.intValue (buffer[0], buffer[1]);
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reportedLength = HexFormatter.intValue (buffer[2], buffer[3]);
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if (reportedLength == 0)
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{
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System.out.println (name.trim () + " reported length : 0 - reverting to "
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+ (buffer.length - 4));
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reportedLength = buffer.length - 4;
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}
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// buffer is a multiple of the block size, so it usually needs to be reduced
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if ((reportedLength + 4) <= buffer.length)
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exactBuffer = new byte[reportedLength];
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else
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exactBuffer = new byte[buffer.length - 4]; // reported length is too long
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System.arraycopy (buffer, 4, exactBuffer, 0, exactBuffer.length);
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if (ShapeTable.isShapeTable (exactBuffer))
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appleFile = new ShapeTable (name, exactBuffer);
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else if (HiResImage.isGif (exactBuffer))
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appleFile = new HiResImage (name, exactBuffer);
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else if (loadAddress == 0x2000 || loadAddress == 0x4000)
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{
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if ((reportedLength > 0x1F00 && reportedLength <= 0x4000)
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|| ((name.equals ("FLY LOGO") && reportedLength == 0x14FA)))
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appleFile = new HiResImage (name, exactBuffer);
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// else if
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// appleFile = new HiResImage (name, unscrunch (exactBuffer));
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else
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appleFile = new AssemblerProgram (name, exactBuffer, loadAddress);
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}
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else if (name.endsWith (".S"))
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appleFile = new MerlinSource (name, exactBuffer);
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else
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appleFile = new AssemblerProgram (name, exactBuffer, loadAddress);
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}
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break;
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case SS: // what is this?
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System.out.println ("SS file");
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appleFile = new DefaultAppleFile (name, buffer);
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break;
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case AA: // what is this?
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System.out.println ("AA file");
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appleFile = new DefaultAppleFile (name, buffer);
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break;
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case BB: // what is this?
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int loadAddress = HexFormatter.intValue (buffer[0], buffer[1]);
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reportedLength = HexFormatter.intValue (buffer[2], buffer[3]);
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exactBuffer = new byte[reportedLength];
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System.arraycopy (buffer, 4, exactBuffer, 0, reportedLength);
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appleFile = new SimpleText2 (name, exactBuffer, loadAddress);
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break;
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default:
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System.out.println ("Unknown file type : " + fileType);
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appleFile = new DefaultAppleFile (name, buffer);
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break;
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}
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}
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catch (Exception e)
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{
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appleFile = new ErrorMessageFile (name, buffer, e);
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e.printStackTrace ();
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}
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return appleFile;
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}
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boolean contains (DiskAddress da)
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{
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for (DiskAddress sector : tsSectors)
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if (sector.compareTo (da) == 0)
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return true;
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for (DiskAddress sector : dataSectors)
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// random access files may have gaps, and thus null sectors
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if (sector != null && sector.compareTo (da) == 0)
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return true;
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return 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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// this 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 FormattedDisk getFormattedDisk ()
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{
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return dosDisk;
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}
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@Override
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public List<DiskAddress> getSectors ()
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{
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List<DiskAddress> sectors = new ArrayList<DiskAddress> ();
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sectors.add (catalogSectorDA);
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sectors.addAll (tsSectors);
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sectors.addAll (dataSectors);
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return sectors;
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}
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@Override
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public String toString ()
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{
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return catalogName;
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}
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} |