Tihwin/src/main/java/tihwin/cd/DirectoryEntry.java

44 lines
1.6 KiB
Java

/*
Copyright 2022 Dmitry Isaenko
This file is part of Tihwin.
Tihwin is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Tihwin 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with Tihwin. If not, see <https://www.gnu.org/licenses/>.
*/
package tihwin.cd;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.StandardCharsets;
public class DirectoryEntry {
private final int extentLocation; // lsb start
private final int dataSize;
private final String identifier;
public DirectoryEntry(byte[] entryBytes){
this.extentLocation = getLEint(entryBytes, 0x2);
this.dataSize = getLEint(entryBytes, 0xA);
byte identifierLength = entryBytes[0x20];
this.identifier = new String(entryBytes, 0x21, identifierLength, StandardCharsets.US_ASCII);
}
private int getLEint(byte[] bytes, int fromOffset){
return ByteBuffer.wrap(bytes, fromOffset, 0x4).order(ByteOrder.LITTLE_ENDIAN).getInt();
}
public int getExtentLocation() {return extentLocation;}
public int getDataSize() {return dataSize;}
public String getIdentifier() {return identifier;}
}