/*
* Copyright (c) 2010. Stephen Connolly.
* Copyright (C) 2007. Jens Hatlak <hatlak@rbg.informatik.tu-darmstadt.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.github.stephenc.javaisotools.iso9660.impl;
import com.github.stephenc.javaisotools.iso9660.sabre.impl.LSBFShortDataReference;
import com.github.stephenc.javaisotools.iso9660.sabre.impl.LSBFWordDataReference;
import com.github.stephenc.javaisotools.sabre.HandlerException;
import com.github.stephenc.javaisotools.sabre.impl.ByteDataReference;
import com.github.stephenc.javaisotools.sabre.impl.WordDataReference;
import com.github.stephenc.javaisotools.sabre.DataReference;
import com.github.stephenc.javaisotools.sabre.Fixup;
import com.github.stephenc.javaisotools.sabre.StreamHandler;
import com.github.stephenc.javaisotools.sabre.impl.ShortDataReference;
public class ISO9660PathTableRecord {
private StreamHandler streamHandler;
private Object type;
private DataReference filename;
private int parent, extAttrRecordLength;
public ISO9660PathTableRecord(StreamHandler streamHandler, Object type, Object object, int parent)
throws HandlerException {
this.streamHandler = streamHandler;
this.extAttrRecordLength = 0;
if (object == ISO9660Constants.FI_ROOT || object == ISO9660Constants.FI_DOT) {
// "root" or "dot", i.e. the directory itself
this.filename = new ByteDataReference(0);
} else if (object == ISO9660Constants.FI_DOTDOT) {
// "dotdot", i.e. the parent directory
this.filename = new ByteDataReference(1);
} else {
throw new HandlerException("Unknown special directory type, must be one of ROOT, DOT, DOTDOT: " + type);
}
setType(type);
setParent(parent);
}
public ISO9660PathTableRecord(StreamHandler streamHandler, Object type, DataReference ref, int parent)
throws HandlerException {
this.streamHandler = streamHandler;
this.extAttrRecordLength = 0;
this.filename = ref;
setType(type);
setParent(parent);
}
private void setType(Object type) throws HandlerException {
if (!type.equals(ISO9660Constants.TYPE_L_PT) &&
!type.equals(ISO9660Constants.TYPE_M_PT)) {
throw new HandlerException("Unknown Path Table type: " + type);
}
this.type = type;
}
private void setParent(int parent) throws HandlerException {
if (parent < 0) {
throw new HandlerException("Invalid parent directory number.");
}
this.parent = parent;
}
public int hasExtAddrRecordLength() {
return extAttrRecordLength;
}
public void setExtAttrRecordLength(int extAttrRecordLength) {
this.extAttrRecordLength = extAttrRecordLength;
}
public Fixup doPTR() throws HandlerException {
// Length of Directory Identifier
streamHandler.data(new ByteDataReference(filename.getLength()));
// Extended Attribute Record Length
streamHandler.data(new ByteDataReference(extAttrRecordLength));
// Location of Extent
DataReference location_dr = null;
if (type.equals(ISO9660Constants.TYPE_L_PT)) {
location_dr = new LSBFWordDataReference(0);
} else if (type.equals(ISO9660Constants.TYPE_M_PT)) {
location_dr = new WordDataReference(0);
}
Fixup locationFixup = streamHandler.fixup(location_dr);
// Parent Directory Number
DataReference parent_dn = null;
if (type.equals(ISO9660Constants.TYPE_L_PT)) {
parent_dn = new LSBFShortDataReference(parent);
} else if (type.equals(ISO9660Constants.TYPE_M_PT)) {
parent_dn = new ShortDataReference(parent);
}
streamHandler.data(parent_dn);
// Directory Identifier
streamHandler.data(filename);
// Padding Field
if (filename.getLength() % 2 == 1) {
streamHandler.data(new ByteDataReference(0));
}
return locationFixup;
}
}