Added support for extracting/sandboxing FTL 1.6.1's resources (patching is WIP)

src/main/java/net/vhati/ftldat/AbstractPack.java

@@ -75,6 +75,15 @@ public abstract class AbstractPack {
 	public void close() throws IOException {
 	}
 
+	/**
+	 * Tidies up the dat before closing (possibly mandatory).
+	 *
+	 * @returns a result, or null if nothing happened
+	 */
+	public RepackResult repack() throws IOException {
+		return null;
+	}
+
 
 
 	/**

src/main/java/net/vhati/ftldat/FTLPack.java

@@ -466,6 +466,7 @@ public class FTLPack extends AbstractPack {
 	 * Repacks the dat file. This will remove gaps, which could
 	 * be created when adding, removing or replacing files.
 	 */
+	@Override
 	public RepackResult repack() throws IOException {
 		long bytesChanged = 0;
 

src/main/java/net/vhati/ftldat/PackUtilities.java

@@ -2,6 +2,7 @@ package net.vhati.ftldat;
 
 import java.io.File;
 import java.io.FileInputStream;
+import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.InputStream;
 import java.io.IOException;

src/main/java/net/vhati/ftldat/PkgPack.java

@@ -733,6 +733,7 @@ public class PkgPack extends AbstractPack {
 	 * All innerPaths will be rewritten to the paths region, sorted by
 	 * dataOffset.
 	 */
+	@Override
 	public RepackResult repack() throws IOException {
 		long bytesChanged = 0;