Added .tar and .tar.* support, *maybe*.

src/WorldEditListener.java

@@ -1098,6 +1098,9 @@ public class WorldEditListener extends PluginListener {
             try {
                 chunkStore = snapshot.getChunkStore();
                 player.print("Snapshot '" + snapshot.getName() + "' loaded; now restoring...");
+            } catch (DataException e) {
+                player.printError("Failed to load snapshot: " + e.getMessage());
+                return true;
             } catch (IOException e) {
                 player.printError("Failed to load snapshot: " + e.getMessage());
                 return true;

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

@@ -54,13 +54,21 @@ public class Snapshot {
      * @return
      * @throws IOException
      */
-    public ChunkStore getChunkStore() throws IOException {
+    public ChunkStore getChunkStore() throws IOException, DataException {
         if (file.getName().toLowerCase().endsWith(".zip")) {
             try {
                 return new TrueZipAlphaChunkStore(file);
             } catch (NoClassDefFoundError e) {
                 return new ZippedAlphaChunkStore(file);
             }
+        } else if (file.getName().toLowerCase().endsWith(".tar.bz2")
+                || file.getName().toLowerCase().endsWith(".tar.gz")
+                || file.getName().toLowerCase().endsWith(".tar")) {
+            try {
+                return new TrueZipAlphaChunkStore(file);
+            } catch (NoClassDefFoundError e) {
+                throw new DataException("TrueZIP is required for .tar support");
+            }
         } else {
             return new AlphaChunkStore(file);
         }

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

@@ -61,9 +61,7 @@ public class SnapshotRepository {
         FilenameFilter filter = new FilenameFilter() {
             public boolean accept(File dir, String name) {
                 File f = new File(dir, name);
-                return (name.toLowerCase().endsWith(".zip")
+                return isValidSnapshot(f);
-                        && f.isFile())
-                        || f.isDirectory();
             }
         };
 
@@ -105,17 +103,30 @@ public class SnapshotRepository {
      * Check to see if a snapshot is valid.
      *
      * @param dir
-     * @param snapshot
      * @return whether it is a valid snapshot
      */
     public boolean isValidSnapshotName(String snapshot) {
-        if (!snapshot.matches("[A-Za-z0-9_\\-,.\\[\\]\\(\\) ]{1,50}")) {
+        return isValidSnapshot(new File(dir, snapshot));
+    }
+
+    /**
+     * Check to see if a snapshot is valid.
+     *
+     * @param f
+     * @return whether it is a valid snapshot
+     */
+    public boolean isValidSnapshot(File f) {
+        if (!f.getName().matches("[A-Za-z0-9_\\-,.\\[\\]\\(\\) ]{1,50}")) {
             return false;
         }
 
-        File f = new File(dir, snapshot);
         return (f.isDirectory() && (new File(f, "level.dat")).exists())
-                || (f.isFile() && f.getName().toLowerCase().endsWith((".zip")));
+                || (f.isFile() && (
+                    f.getName().toLowerCase().endsWith(".zip")
+                    || f.getName().toLowerCase().endsWith(".tar.bz2")
+                    || f.getName().toLowerCase().endsWith(".tar.gz")
+                    || f.getName().toLowerCase().endsWith(".tar")
+                    ));
     }
 
     /**