105 lines
3.4 KiB
Java
Executable File
105 lines
3.4 KiB
Java
Executable File
package com.bytezone.diskbrowser.dos;
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import com.bytezone.diskbrowser.HexFormatter;
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import com.bytezone.diskbrowser.disk.AbstractSector;
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import com.bytezone.diskbrowser.disk.Disk;
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class DosCatalogSector extends AbstractSector
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{
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private static final String[] fileTypes = { "Text file", "Integer Basic program",
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"Applesoft Basic program", "Binary file",
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"SS file", "Relocatable file", "AA file",
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"BB file" };
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private static int CATALOG_ENTRY_SIZE = 35;
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public DosCatalogSector (Disk disk, byte[] buffer)
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{
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super (disk, buffer);
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}
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@Override
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public String createText ()
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{
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StringBuilder text = getHeader ("Catalog Sector");
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addText (text, buffer, 0, 1, "Not used");
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addText (text, buffer, 1, 2, "Next catalog track/sector");
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addText (text, buffer, 3, 4, "Not used");
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addText (text, buffer, 7, 4, "Not used");
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for (int i = 11; i <= 255; i += CATALOG_ENTRY_SIZE)
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{
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text.append ("\n");
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if (true)
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{
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if (buffer[i] == (byte) 0xFF)
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{
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addText (text,
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buffer,
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i + 0,
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2,
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"DEL: file @ " + HexFormatter.format2 (buffer[i + 32]) + " "
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+ HexFormatter.format2 (buffer[i + 1]));
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addText (text, buffer, i + 2, 1, "DEL: File type " + getType (buffer[i + 2]));
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if (buffer[i + 3] == 0)
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addText (text, buffer, i + 3, 4, "");
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else
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addText (text, buffer, i + 3, 4, "DEL: " + getName (buffer, i));
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addTextAndDecimal (text, buffer, i + 33, 2, "DEL: Sector count");
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}
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else if (buffer[i] > 0)
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{
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addText (text, buffer, i + 0, 2, "TS list track/sector");
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addText (text, buffer, i + 2, 1, "File type " + getType (buffer[i + 2]));
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if (buffer[i + 3] == 0)
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addText (text, buffer, i + 3, 4, "");
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else
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addText (text, buffer, i + 3, 4, getName (buffer, i));
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addTextAndDecimal (text, buffer, i + 33, 2, "Sector count");
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}
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else
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{
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addText (text, buffer, i + 0, 2, "");
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addText (text, buffer, i + 2, 1, "");
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addText (text, buffer, i + 3, 4, "");
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addText (text, buffer, i + 33, 2, "");
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}
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}
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}
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text.deleteCharAt (text.length () - 1);
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return text.toString ();
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}
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private String getName (byte[] buffer, int offset)
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{
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StringBuilder text = new StringBuilder ();
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int max = buffer[offset] == (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 = HexFormatter.intValue (buffer[i + offset]);
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if (c == 136)
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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) // non-printable
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text.append ("^" + (char) (c + 64));
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else
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text.append ((char) c); // standard ascii
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}
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return text.toString ();
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}
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private String getType (byte value)
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{
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int type = value & 0x7F;
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boolean locked = (value & 0x80) > 0;
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int val = 7;
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for (int i = 64; i > type; val--, i /= 2)
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;
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return "(" + fileTypes[val] + (locked ? ", locked)" : ", unlocked)");
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}
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} |