2002-12-01 02:21:00 +00:00
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/*
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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;
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import java.text.NumberFormat;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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/**
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* Represents a Pascal file entry on disk.
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* <p>
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* Date created: Oct 5, 2002 12:22:34 AM
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* @author: Rob Greene
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*/
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public class PascalFileEntry implements FileEntry {
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private byte[] fileEntry;
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private PascalFormatDisk disk;
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/**
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* Constructor for PascalFileEntry.
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*/
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public PascalFileEntry(byte[] fileEntry, PascalFormatDisk disk) {
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super();
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this.fileEntry = fileEntry;
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this.disk = disk;
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}
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/**
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* Get the block number of the files 1st block.
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*/
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public int getFirstBlock() {
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return AppleUtil.getWordValue(fileEntry, 0);
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}
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/**
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* Get the block number of the files last block +1.
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*/
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public int getLastBlock() {
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return AppleUtil.getWordValue(fileEntry, 2);
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}
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/**
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* Return the name of this file.
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*/
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public String getFilename() {
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return AppleUtil.getPascalString(fileEntry, 6);
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}
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2003-01-21 05:14:46 +00:00
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/**
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* Return the maximum filename length.
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*/
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public int getMaximumFilenameLength() {
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return 15;
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}
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2002-12-01 02:21:00 +00:00
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/**
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* Return the filetype of this file.
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*/
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public String getFiletype() {
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String filetypes[] = {
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"xdskfile (for bad blocks)",
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"codefile",
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"textfile",
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"infofile",
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"datafile",
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"graffile",
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"fotofile",
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"securedir" };
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int filetype = fileEntry[4] & 0x0f;
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if (filetype == 0 || filetype > filetypes.length) {
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return "unknown (" + filetype + ")";
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} else {
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return filetypes[filetype-1];
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}
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}
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/**
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* Identify if this file is locked - not applicable in Pascal?
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*/
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public boolean isLocked() {
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return false;
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}
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/**
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* Get the number of bytes used in files last block.
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*/
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public int getBytesUsedInLastBlock() {
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return AppleUtil.getWordValue(fileEntry, 22);
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}
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/**
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* Compute the size of this file (in bytes).
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*/
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public int getSize() {
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int blocks = getBlocksUsed() - 1;
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return blocks*Disk.BLOCK_SIZE + getBytesUsedInLastBlock();
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}
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/**
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* Compute the blocks used.
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*/
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public int getBlocksUsed() {
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return AppleUtil.getWordValue(fileEntry, 2) - AppleUtil.getWordValue(fileEntry, 0);
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}
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/**
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* Pascal does not support directories.
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*/
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public boolean isDirectory() {
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return false;
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}
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/**
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* Retrieve the list of files in this directory.
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* Always returns null, as Pascal does not support directories.
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*/
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public List getFiles() {
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return null;
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}
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/**
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* Pascal file entries are removed upon deletion.
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* Thus, a file entry cannot be marked as deleted.
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*/
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public boolean isDeleted() {
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return false;
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}
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/**
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* Get the file modification date.
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*/
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public Date getModificationDate() {
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return AppleUtil.getPascalDate(fileEntry, 24);
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}
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/**
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* Get the standard file column header information.
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* This default implementation is intended only for standard mode.
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* displayMode is specified in FormattedDisk.
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*/
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public List getFileColumnData(int displayMode) {
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NumberFormat numberFormat = NumberFormat.getNumberInstance();
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SimpleDateFormat dateFormat = new SimpleDateFormat("MM/dd/yy");
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List list = new ArrayList();
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switch (displayMode) {
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case FormattedDisk.FILE_DISPLAY_NATIVE:
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list.add(dateFormat.format(getModificationDate()));
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numberFormat.setMinimumIntegerDigits(3);
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list.add(numberFormat.format(getBlocksUsed()));
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list.add(getFiletype());
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list.add(getFilename());
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break;
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case FormattedDisk.FILE_DISPLAY_DETAIL:
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list.add(dateFormat.format(getModificationDate()));
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numberFormat.setMinimumIntegerDigits(3);
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list.add(numberFormat.format(getBlocksUsed()));
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numberFormat.setMinimumIntegerDigits(1);
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list.add(numberFormat.format(getBytesUsedInLastBlock()));
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list.add(numberFormat.format(getSize()));
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list.add(getFiletype());
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list.add(getFilename());
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numberFormat.setMinimumIntegerDigits(3);
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list.add(numberFormat.format(getFirstBlock()));
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list.add(numberFormat.format(getLastBlock()-1));
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break;
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default: // FILE_DISPLAY_STANDARD
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list.add(getFilename());
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list.add(getFiletype());
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list.add(numberFormat.format(getSize()));
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list.add(isLocked() ? "Locked" : "");
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break;
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}
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return list;
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}
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/**
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* Get file data. This handles any operating-system specific issues.
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* Currently, the disk itself handles this.
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*/
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public byte[] getFileData() {
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return disk.getFileData(this);
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}
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/**
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* Get the suggested FileFilter. This appears to be operating system
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* specific, so each operating system needs to implement some manner
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* of guessing the appropriate filter.
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*/
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public FileFilter getSuggestedFilter() {
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if ("textfile".equals(getFiletype())) {
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return new TextFileFilter();
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}
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return new BinaryFileFilter();
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}
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2002-12-15 21:00:35 +00:00
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/**
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* Get the FormattedDisk associated with this FileEntry.
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* This is useful to interfaces that need to retrieve the associated
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* disk.
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*/
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public FormattedDisk getFormattedDisk() {
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return disk;
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}
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2002-12-01 02:21:00 +00:00
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}
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