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4989c0353b
When one creates a subdirectory on a ProDOS volume, the master entry in the subdirectory's key block needs to point back to its parent directory block and entry number. However, the code for setting those things is missing.
124 lines
3.4 KiB
Java
124 lines
3.4 KiB
Java
/*
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* AppleCommander - An Apple ][ image utility.
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* Copyright (C) 2002 by Robert Greene
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* robgreene at users.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package com.webcodepro.applecommander.storage.os.prodos;
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import com.webcodepro.applecommander.util.AppleUtil;
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/**
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* Provides common subdirectory attributes.
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* <p>
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* Date created: Oct 5, 2002 11:17:57 PM
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* @author Rob Greene
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*/
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public class ProdosSubdirectoryHeader extends ProdosCommonDirectoryHeader {
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private ProdosDirectoryEntry directoryEntry;
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/**
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* Constructor for ProdosSubdirectoryHeader.
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*/
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public ProdosSubdirectoryHeader(ProdosFormatDisk disk, int block) {
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super(disk, block);
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}
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/**
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* Return the name of this subdirectory.
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*/
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public String getSubdirectoryName() {
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return AppleUtil.getProdosString(readFileEntry(), 0);
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}
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/**
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* Return the block number of the parent directory which contains the
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* file entry for this subdirectory.
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*/
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public int getParentPointer() {
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return AppleUtil.getWordValue(readFileEntry(), 0x23);
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}
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/**
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* Set the block number of the parent directory which contains the
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* file entry for this subdirectory.
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*/
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public void setParentPointer(int block) {
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byte[] data = readFileEntry();
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AppleUtil.setWordValue(data, 0x23, block);
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writeFileEntry(data);
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}
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/**
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* Return the number of the file entry within the parent block.
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*/
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public int getParentEntry() {
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return AppleUtil.getUnsignedByte(readFileEntry()[0x25]);
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}
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/**
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* Sets the number of the file entry within the parent block.
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*/
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public void setParentEntry(int entryNum) {
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byte[] data = readFileEntry();
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data[0x25] = (byte) entryNum;
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writeFileEntry(data);
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}
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/**
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* Return the length of the parent entry.
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*/
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public int getParentEntryLength() {
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return AppleUtil.getWordValue(readFileEntry(), 0x26);
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}
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/**
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* Sets the number of the file entry within the parent block.
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*/
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public void setParentEntryLength(int length) {
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byte[] data = readFileEntry();
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data[0x26] = (byte) length;
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writeFileEntry(data);
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}
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/**
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* Set the related ProDOS directory entry.
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*/
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public void setProdosDirectoryEntry(ProdosDirectoryEntry directoryEntry) {
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this.directoryEntry = directoryEntry;
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}
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/**
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* Get the related ProDOS directory entry.
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*/
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public ProdosDirectoryEntry getProdosDirectoryEntry() {
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return directoryEntry;
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}
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/**
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* Set up some housekeeping bits
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*/
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public void setHousekeeping() {
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byte[] data = readFileEntry();
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data[0x00] = (byte) (0xe0 | (data[0x00] & 0x0f)); // Subdirectories have the high nibble set to 0x0e
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data[0x10] = 0x75; // Reserved - must be $75
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data[0x1f] = (byte) ENTRY_LENGTH;
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data[0x20] = 0x0d;
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AppleUtil.setWordValue(data, 0x21, 0); // Set file count to zero
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writeFileEntry(data);
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}
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}
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