Added TrueZIP support.

manifest.mf

@@ -1,3 +1,3 @@
 Manifest-Version: 1.0
-Class-Path: jnbt.jar
+Class-Path: jnbt.jar truezip.jar ant.jar
 

src/WorldEdit.java

@@ -953,7 +953,7 @@ public class WorldEdit {
 
             Region region = session.getRegion();
             Snapshot snapshot = session.getSnapshot();
-            ChunkStore chunkStore;
+            ChunkStore chunkStore = null;
 
             // No snapshot set?
             if (snapshot == null) {
@@ -974,6 +974,7 @@ public class WorldEdit {
                 return true;
             }
 
+            try {
                 // Restore snapshot
                 SnapshotRestore restore = new SnapshotRestore(chunkStore, region);
                 //player.print(restore.getChunksAffected() + " chunk(s) will be loaded.");
@@ -988,6 +989,12 @@ public class WorldEdit {
                             restore.getMissingChunks().size(),
                             restore.getErrorChunks().size()));
                 }
+            } finally {
+                try {
+                    chunkStore.close();
+                } catch (IOException e) {
+                }
+            }
 
             return true;
         }

src/com/sk89q/worldedit/data/TrueZipAlphaChunkStore.java

@@ -0,0 +1,158 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 sk89q <http://www.sk89q.com>
+ *
+ * This program 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.
+ *
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.data;
+
+import de.schlichtherle.io.*;
+import de.schlichtherle.io.File;
+import de.schlichtherle.io.FileInputStream;
+import de.schlichtherle.io.FileOutputStream;
+import java.io.*;
+
+/**
+ * Represents the chunk store used by Minecraft alpha.
+ *
+ * @author sk89q
+ */
+public class TrueZipAlphaChunkStore extends NestedFileChunkStore {
+    /**
+     * Folder to read from.
+     */
+    private File path;
+
+    /**
+     * Create an instance. The passed path is the folder to read the
+     * chunk files from.
+     *
+     * @param path
+     */
+    public TrueZipAlphaChunkStore(java.io.File path) {
+        this.path = new File(path);
+        File root = findWorldPath(this.path);
+        if (root != null) {
+            this.path = root;
+        }
+    }
+
+    /**
+     * Create an instance. The passed path is the folder to read the
+     * chunk files from.
+     *
+     * @param path
+     */
+    public TrueZipAlphaChunkStore(File path) {
+        this.path = path;
+        File root = findWorldPath(path);
+        if (root != null) {
+            this.path = root;
+        }
+    }
+
+    /**
+     * Create an instance. The passed path is the folder to read the
+     * chunk files from.
+     *
+     * @param path
+     */
+    public TrueZipAlphaChunkStore(String path) {
+        this.path = new File(path);
+        File root = findWorldPath(this.path);
+        if (root != null) {
+            this.path = root;
+        }
+    }
+
+    /**
+     * Get the input stream for a chunk file.
+     *
+     * @param f1
+     * @param f2
+     * @param name
+     * @return
+     * @throws DataException
+     * @throws IOException
+     */
+    protected InputStream getInputStream(String f1, String f2, String name)
+            throws DataException, IOException {
+        String file = f1 + File.separator + f2 + File.separator + name;
+        try {
+            return new FileInputStream(new File(path.getAbsolutePath(), file));
+        } catch (FileNotFoundException e) {
+            throw new MissingChunkException();
+        }
+    }
+
+    /**
+     * Find the root directory for the chunk files.
+     *
+     * @param path
+     * @return
+     */
+    private File findWorldPath(File path) {
+        if ((new File(path, "world")).exists()) {
+            return new File(path, "world");
+        }
+
+        return searchForPath(path);
+    }
+
+    /**
+     * Find the root directory for the chunk files.
+     * 
+     * @param path
+     * @return
+     */
+    private File searchForPath(File path) {
+        String[] children = path.list();
+        // listFiles() returns java.io.File[]
+
+        if (children == null) {
+            return null;
+        } else {
+            for (String child : children) {
+                File f = new File(path, child);
+                
+                if (f.isFile() && f.getName().equals("level.dat")) {
+                    return path;
+                } else if (f.isDirectory()) {
+                    File res = findWorldPath(f);
+                    if (res != null) {
+                        return res;
+                    }
+                }
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Close the archive.
+     *
+     * @throws IOException
+     */
+    @Override
+    public void close() throws IOException {
+        try {
+            path.umount();
+        } catch (ArchiveException e) {
+            throw new IOException(e);
+        }
+    }
+}

src/com/sk89q/worldedit/snapshots/Snapshot.java

@@ -56,7 +56,11 @@ public class Snapshot {
      */
     public ChunkStore getChunkStore() throws IOException {
         if (file.getName().toLowerCase().endsWith(".zip")) {
+            try {
+                return new TrueZipAlphaChunkStore(file);
+            } catch (NoClassDefFoundError e) {
                 return new ZippedAlphaChunkStore(file);
+            }
         } else {
             return new AlphaChunkStore(file);
         }