Various minor

Tweak some messages
Add command confirmation
Optimize surface mask
Optimize angle mask (further)
Fix help formatting
Fix rollback import from disk being a shallow summary

build.gradle

@@ -28,7 +28,7 @@ ext {
     date = git.head().date.format("yy.MM.dd")
     revision = "-${git.head().abbreviatedId}"
     parents = git.head().parentIds;
-    index = -93;  // Offset to match CI
+    index = -94;  // Offset to match CI
     int major, minor, patch;
     major = minor = patch = 0;
     for (;parents != null && !parents.isEmpty();index++) {

core/src/main/java/com/boydti/fawe/command/FawePrimitiveBinding.java

@@ -1,6 +1,7 @@
 package com.boydti.fawe.command;
 
 import com.boydti.fawe.Fawe;
+import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.extent.NullExtent;
 import com.boydti.fawe.object.extent.ResettableExtent;
 import com.sk89q.worldedit.WorldEdit;
@@ -61,6 +62,24 @@ public class FawePrimitiveBinding extends BindingHelper {
         }
     }
 
+    /**
+     * Gets an {@link com.boydti.fawe.object.FawePlayer} from a {@link ArgumentStack}.
+     *
+     * @param context the context
+     * @return a FawePlayer
+     * @throws ParameterException on other error
+     */
+    @BindingMatch(type = FawePlayer.class,
+            behavior = BindingBehavior.PROVIDES)
+    public FawePlayer getFawePlayer(ArgumentStack context) throws ParameterException, InputParseException {
+        Actor sender = context.getContext().getLocals().get(Actor.class);
+        if (sender == null) {
+            throw new ParameterException("Missing 'Actor'");
+        } else {
+            return FawePlayer.wrap(sender);
+        }
+    }
+
     /**
      * Gets an {@link com.sk89q.worldedit.extent.Extent} from a {@link ArgumentStack}.
      *

core/src/main/java/com/boydti/fawe/command/Rollback.java

@@ -29,7 +29,7 @@ public class Rollback extends FaweCommand {
     @Override
     public boolean execute(final FawePlayer player, final String... args) {
         if (!Settings.IMP.HISTORY.USE_DATABASE) {
-            BBC.SETTING_DISABLE.send(player, "history.use-database");
+            BBC.SETTING_DISABLE.send(player, "history.use-database (Import with /frb #import )");
             return false;
         }
         if (args.length != 3) {

core/src/main/java/com/boydti/fawe/config/BBC.java

@@ -172,6 +172,7 @@ public enum BBC {
     PLACE_DISABLED("Now placing at the block you stand in.", "WorldEdit.General"),
 
     KILL_SUCCESS("Killed %s0 entities in a radius of %s1.", "WorldEdit.Utility"),
+    NOTHING_CONFIRMED("You have no actions pending confirmation.", "WorldEdit.Utility"),
 
 
     SCHEMATIC_DELETE("%s0 has been deleted.", "Worldedit.Schematic"),
@@ -234,6 +235,7 @@ public enum BBC {
     WORLDEDIT_SOME_FAILS_BLOCKBAG("&cMissing blocks: %s0", "Error"),
 
     WORLDEDIT_CANCEL_COUNT("&cCancelled %s0 edits.", "Cancel"),
+    WORLDEDIT_CANCEL_REASON_CONFIRM("&7Your selection is large (%s0 -> %s1). Use &c//confirm &7to execute &c%s2", "Cancel"),
     WORLDEDIT_CANCEL_REASON("&cYour WorldEdit action was cancelled:&7 %s0&c.", "Cancel"),
     WORLDEDIT_CANCEL_REASON_MANUAL("Manual cancellation", "Cancel"),
     WORLDEDIT_CANCEL_REASON_LOW_MEMORY("Low memory", "Cancel"),

core/src/main/java/com/boydti/fawe/config/Settings.java

@@ -130,9 +130,13 @@ public class Settings extends Config {
         })
         public int INVENTORY_MODE = 0;
         @Comment({
-            "Place chunks instead of individual blocks"
+                "Place chunks instead of individual blocks"
         })
         public boolean FAST_PLACEMENT = true;
+        @Comment({
+                "Should large edits require confirmation (>16384 chunks)",
+        })
+        public boolean CONFIRM_LARGE = true;
     }
 
     public static class HISTORY {
@@ -402,6 +406,7 @@ public class Settings extends Config {
                 limit.INVENTORY_MODE = Math.min(limit.INVENTORY_MODE, newLimit.INVENTORY_MODE);
                 limit.SPEED_REDUCTION = Math.min(limit.SPEED_REDUCTION, newLimit.SPEED_REDUCTION);
                 limit.FAST_PLACEMENT |= newLimit.FAST_PLACEMENT;
+                limit.CONFIRM_LARGE &= newLimit.CONFIRM_LARGE;
             }
         }
         return limit;

core/src/main/java/com/boydti/fawe/object/FaweLimit.java

@@ -16,6 +16,7 @@ public class FaweLimit {
     public int INVENTORY_MODE = Integer.MAX_VALUE;
     public int SPEED_REDUCTION = Integer.MAX_VALUE;
     public boolean FAST_PLACEMENT = false;
+    public boolean CONFIRM_LARGE = true;
 
 
     public static FaweLimit MAX;
@@ -58,6 +59,7 @@ public class FaweLimit {
         MAX.MAX_HISTORY = Integer.MAX_VALUE;
         MAX.MAX_EXPRESSION_MS = 50;
         MAX.FAST_PLACEMENT = true;
+        MAX.CONFIRM_LARGE = true;
     }
 
     public boolean MAX_CHANGES() {
@@ -109,6 +111,7 @@ public class FaweLimit {
         INVENTORY_MODE = limit.INVENTORY_MODE;
         SPEED_REDUCTION = limit.SPEED_REDUCTION;
         FAST_PLACEMENT = limit.FAST_PLACEMENT;
+        CONFIRM_LARGE = limit.CONFIRM_LARGE;
     }
 
     public FaweLimit copy() {
@@ -124,6 +127,7 @@ public class FaweLimit {
         limit.MAX_ITERATIONS = MAX_ITERATIONS;
         limit.MAX_HISTORY = MAX_HISTORY;
         limit.FAST_PLACEMENT = FAST_PLACEMENT;
+        limit.CONFIRM_LARGE = CONFIRM_LARGE;
         return limit;
     }
 

core/src/main/java/com/boydti/fawe/object/FawePlayer.java

@@ -21,9 +21,12 @@ import com.sk89q.worldedit.Vector;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.WorldEditException;
 import com.sk89q.worldedit.entity.Player;
+import com.sk89q.worldedit.event.platform.CommandEvent;
 import com.sk89q.worldedit.extension.platform.Actor;
+import com.sk89q.worldedit.extension.platform.CommandManager;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
 import com.sk89q.worldedit.regions.Region;
+import com.sk89q.worldedit.regions.RegionOperationException;
 import com.sk89q.worldedit.regions.RegionSelector;
 import com.sk89q.worldedit.regions.selector.CuboidRegionSelector;
 import com.sk89q.worldedit.session.ClipboardHolder;
@@ -64,6 +67,9 @@ public abstract class FawePlayer<T> extends Metadatable {
         if (obj == null) {
             return FakePlayer.getConsole().toFawePlayer();
         }
+        if (obj instanceof FawePlayer) {
+            return (FawePlayer<V>) obj;
+        }
         if (obj instanceof FakePlayer) {
             return ((FakePlayer) obj).toFawePlayer();
         }
@@ -120,6 +126,39 @@ public abstract class FawePlayer<T> extends Metadatable {
         }
     }
 
+    public void checkConfirmation(String command) throws RegionOperationException {
+        if (getMeta("cmdConfirmRunning", false)) {
+            return;
+        }
+        Region sel = getSelection();
+        if (sel != null) {
+            Vector min = sel.getMinimumPoint();
+            Vector max = sel.getMaximumPoint();
+            int area = (int) ((max.getX() - min.getX()) * (max.getZ() - min.getZ() + 1));
+            if (area > 2 << 22) {
+                setMeta("cmdConfirm", command);
+                throw new RegionOperationException(BBC.WORLDEDIT_CANCEL_REASON_CONFIRM.f(min, max, command));
+            }
+        }
+    }
+
+    public boolean confirm() {
+        String confirm = deleteMeta("cmdConfirm");
+        if (confirm == null) {
+            return false;
+        }
+        queueAction(new Runnable() {
+            @Override
+            public void run() {
+                setMeta("cmdConfirmRunning", true);
+                CommandEvent event = new CommandEvent(getPlayer(), confirm);
+                CommandManager.getInstance().handleCommandOnCurrentThread(event);
+                setMeta("cmdConfirmRunning", false);
+            }
+        });
+        return true;
+    }
+
     public boolean toggle(String perm) {
         if (this.hasPermission(perm)) {
             this.setPermission(perm, false);

core/src/main/java/com/boydti/fawe/object/Metadatable.java

@@ -54,7 +54,7 @@ public class Metadatable {
      *  - deleting other plugin's metadata may cause issues
      * @param key
      */
-    public Object deleteMeta(String key) {
-        return this.meta == null ? null : this.meta.remove(key);
+    public <V> V deleteMeta(String key) {
+        return this.meta == null ? null : (V) this.meta.remove(key);
     }
 }

core/src/main/java/com/boydti/fawe/object/brush/InspectBrush.java

@@ -63,7 +63,7 @@ public class InspectBrush extends BrushTool implements DoubleActionTraceTool {
             return false;
         }
         if (!Settings.IMP.HISTORY.USE_DATABASE) {
-            player.print(BBC.getPrefix() + BBC.SETTING_DISABLE.f("history.use-database"));
+            player.print(BBC.getPrefix() + BBC.SETTING_DISABLE.f("history.use-database (Import with /frb #import )"));
             return false;
         }
         WorldVector target = getTarget(player, rightClick);

core/src/main/java/com/boydti/fawe/object/brush/SurfaceSphereBrush.java

@@ -19,7 +19,7 @@ public class SurfaceSphereBrush implements Brush {
         SurfaceMask surface = new SurfaceMask(editSession);
         final SolidBlockMask solid = new SolidBlockMask(editSession);
         final RadiusMask radius = new RadiusMask(0, (int) size);
-        RecursiveVisitor visitor = new RecursiveVisitor(vector -> radius.test(vector) && surface.test(vector), vector -> editSession.setBlock(vector, pattern));
+        RecursiveVisitor visitor = new RecursiveVisitor(vector -> surface.test(vector) && radius.test(vector), vector -> editSession.setBlock(vector, pattern));
         visitor.visit(position);
         visitor.setDirections(Arrays.asList(BreadthFirstSearch.DIAGONAL_DIRECTIONS));
         Operations.completeBlindly(visitor);

core/src/main/java/com/boydti/fawe/object/collection/LocalBlockVectorSet.java

@@ -182,6 +182,21 @@ public class LocalBlockVectorSet implements Set<Vector> {
         return array;
     }
 
+    public boolean canAdd(int x, int y, int z) {
+        if (offsetX == Integer.MAX_VALUE) {
+            return false;
+        }
+        int relX = x - offsetX;
+        int relZ = z - offsetZ;
+        if (relX > 1023 || relX < -1024 || relZ > 1023 || relZ < -1024) {
+            return false;
+        }
+        if (y < 0 || y > 256) {
+            return false;
+        }
+        return true;
+    }
+
     public boolean add(int x, int y, int z) {
         if (offsetX == Integer.MAX_VALUE) {
             offsetX = x;

core/src/main/java/com/boydti/fawe/object/function/mask/AbstractDelegateMask.java

@@ -14,6 +14,10 @@ public class AbstractDelegateMask extends AbstractMask {
         this.mask = parent;
     }
 
+    public final Mask getMask() {
+        return mask;
+    }
+
     @Override
     public boolean test(Vector vector) {
         return mask.test(vector);

core/src/main/java/com/boydti/fawe/object/mask/AdjacentAnyMask.java

@@ -10,15 +10,12 @@ import com.sk89q.worldedit.function.mask.Mask;
  */
 public class AdjacentAnyMask extends AbstractMask implements ResettableMask {
 
-    private final Mask mask;
+    private final CachedMask mask;
     private transient MutableBlockVector mutable = new MutableBlockVector();
 
     public AdjacentAnyMask(Mask mask) {
-        this.mask = mask;
-    }
-
-    public Mask getMask() {
-        return mask;
+        this.mask = CachedMask.cache(mask);
+        mutable = new MutableBlockVector();
     }
 
     @Override
@@ -26,26 +23,21 @@ public class AdjacentAnyMask extends AbstractMask implements ResettableMask {
         mutable = new MutableBlockVector();
     }
 
+    public CachedMask getParentMask() {
+        return mask;
+    }
+
     @Override
     public boolean test(Vector v) {
         int x = v.getBlockX();
         int y = v.getBlockY();
         int z = v.getBlockZ();
-        v.mutY(y + 1);
-        if (mask.test(v)) { v.mutY(y); return true; }
-        v.mutY(y - 1);
-        if (mask.test(v)) { v.mutY(y); return true; }
-        v.mutY(y);
-        v.mutX(x + 1);
-        if (mask.test(v)) { v.mutX(x); return true; }
-        v.mutX(x - 1);
-        if (mask.test(v)) { v.mutX(x); return true; }
-        v.mutX(x);
-        v.mutZ(z + 1);
-        if (mask.test(v)) { v.mutZ(z); return true; }
-        v.mutZ(z - 1);
-        if (mask.test(v)) { v.mutZ(z); return true; }
-        v.mutZ(z);
+        if (mask.test(x, y + 1, z)) { return true; }
+        if (mask.test(x + 1, y, z)) { return true; }
+        if (mask.test(x - 1, y, z)) { return true; }
+        if (mask.test(x, y, z + 1)) { return true; }
+        if (mask.test(x, y, z - 1)) { return true; }
+        if (mask.test(x, y - 1, z)) { return true; }
         return false;
     }
 
@@ -53,21 +45,12 @@ public class AdjacentAnyMask extends AbstractMask implements ResettableMask {
         int x = v.getBlockX();
         int y = v.getBlockY();
         int z = v.getBlockZ();
-        v.mutY(y + 1);
-        if (mask.test(v)) { v.mutY(y); return mutable.setComponents(0, 1, 0); }
-        v.mutY(y - 1);
-        if (mask.test(v)) { v.mutY(y); return mutable.setComponents(0, -1, 0); }
-        v.mutY(y);
-        v.mutX(x + 1);
-        if (mask.test(v)) { v.mutX(x); return mutable.setComponents(1, 0, 0); }
-        v.mutX(x - 1);
-        if (mask.test(v)) { v.mutX(x); return mutable.setComponents(-1, 0, 0); }
-        v.mutX(x);
-        v.mutZ(z + 1);
-        if (mask.test(v)) { v.mutZ(z); return mutable.setComponents(0, 0, 1); }
-        v.mutZ(z - 1);
-        if (mask.test(v)) { v.mutZ(z); return mutable.setComponents(0, 0, - 1); }
-        v.mutZ(z);
+        if (mask.test(x, y + 1, z)) { return mutable.setComponents(0, 1, 0); }
+        if (mask.test(x + 1, y, z)) { return mutable.setComponents(1, 0, 0); }
+        if (mask.test(x - 1, y, z)) { return mutable.setComponents(-1, 0, 0); }
+        if (mask.test(x, y, z + 1)) { return mutable.setComponents(0, 0, 1); }
+        if (mask.test(x, y, z - 1)) { return mutable.setComponents(0, 0, - 1); }
+        if (mask.test(x, y - 1, z)) { return mutable.setComponents(0, -1, 0); }
         return null;
     }
 }

core/src/main/java/com/boydti/fawe/object/mask/AngleMask.java

@@ -33,6 +33,8 @@ public class AngleMask extends SolidBlockMask implements ResettableMask {
         mutable = new MutableBlockVector();
         cacheBotX = Integer.MIN_VALUE;
         cacheBotZ = Integer.MIN_VALUE;
+        lastX = Integer.MIN_VALUE;
+        lastX = Integer.MIN_VALUE;
         if (cacheHeights != null) {
             Arrays.fill(cacheHeights, (byte) 0);
         }
@@ -43,8 +45,12 @@ public class AngleMask extends SolidBlockMask implements ResettableMask {
     private transient int cacheBotX = Integer.MIN_VALUE;
     private transient int cacheBotZ = Integer.MIN_VALUE;
     private transient int cacheCenterZ;
-    private transient byte[] cacheHeights = null;
-    private transient int lastY = 0;
+    private transient byte[] cacheHeights;
+    private transient int lastY;
+    private transient int lastX = Integer.MIN_VALUE;
+    private transient int lastZ = Integer.MIN_VALUE;
+    private transient boolean foundY;
+    private transient boolean lastValue;
 
     public int getHeight(int x, int y, int z) {
         try {
@@ -74,6 +80,22 @@ public class AngleMask extends SolidBlockMask implements ResettableMask {
         }
     }
 
+    private boolean testSlope(int x, int y, int z) {
+        double slope;
+        boolean aboveMin;
+        if ((lastX == (lastX = x) & lastZ == (lastZ = z))) {
+            return lastValue;
+        }
+        slope = Math.abs(getHeight(x + 1, y, z) - getHeight(x - 1, y, z)) * ADJACENT_MOD;
+        if (slope >= min && max >= Math.max(maxY - y, y)) {
+            return lastValue = true;
+        }
+        slope = Math.max(slope, Math.abs(getHeight(x, y, z + 1) - getHeight(x, y, z - 1)) * ADJACENT_MOD);
+        slope = Math.max(slope, Math.abs(getHeight(x + 1, y, z + 1) - getHeight(x - 1, y, z - 1)) * DIAGONAL_MOD);
+        slope = Math.max(slope, Math.abs(getHeight(x - 1, y, z + 1) - getHeight(x + 1, y, z - 1)) * DIAGONAL_MOD);
+        return lastValue = (slope >= min && slope <= max);
+    }
+
     @Override
     public boolean test(Vector vector) {
         int x = vector.getBlockX();
@@ -83,20 +105,11 @@ public class AngleMask extends SolidBlockMask implements ResettableMask {
         if (!test(block.getId(), block.getData())) {
             return false;
         }
-        block = getExtent().getLazyBlock(x, y + 1, z);
-        if (overlay && test(block.getId(), block.getData())) {
-            return false;
+        if (overlay) {
+            block = getExtent().getLazyBlock(x, y + 1, z);
+            if (test(block.getId(), block.getData())) return lastValue = false;
         }
-        double slope;
-        boolean aboveMin;
-        slope = Math.abs(getHeight(x + 1, y, z) - getHeight(x - 1, y, z)) * ADJACENT_MOD;
-        if (slope >= min && max >= Math.max(maxY - y, y)) {
-            return true;
-        }
-        slope = Math.max(slope, Math.abs(getHeight(x, y, z + 1) - getHeight(x, y, z - 1)) * ADJACENT_MOD);
-        slope = Math.max(slope, Math.abs(getHeight(x + 1, y, z + 1) - getHeight(x - 1, y, z - 1)) * DIAGONAL_MOD);
-        slope = Math.max(slope, Math.abs(getHeight(x - 1, y, z + 1) - getHeight(x + 1, y, z - 1)) * DIAGONAL_MOD);
-        return (slope >= min && slope <= max);
+        return testSlope(x, y, z);
     }
 
     @Nullable

core/src/main/java/com/boydti/fawe/object/mask/CachedMask.java

@@ -0,0 +1,65 @@
+package com.boydti.fawe.object.mask;
+
+import com.boydti.fawe.object.collection.LocalBlockVectorSet;
+import com.boydti.fawe.object.function.mask.AbstractDelegateMask;
+import com.sk89q.worldedit.MutableBlockVector;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.function.mask.Mask;
+
+public class CachedMask extends AbstractDelegateMask implements ResettableMask {
+
+    private transient MutableBlockVector mutable = new MutableBlockVector();
+    private transient LocalBlockVectorSet cache_checked = new LocalBlockVectorSet();
+    private transient LocalBlockVectorSet cache_results = new LocalBlockVectorSet();
+
+    public CachedMask(Mask mask) {
+        super(mask);
+        cache_checked.setOffset(Integer.MIN_VALUE, Integer.MIN_VALUE);
+        cache_results.setOffset(Integer.MIN_VALUE, Integer.MIN_VALUE);
+    }
+
+    public static CachedMask cache(Mask mask) {
+        if (mask instanceof CachedMask) {
+            return (CachedMask) mask;
+        }
+        return new CachedMask(mask);
+    }
+
+    @Override
+    public void reset() {
+        mutable = new MutableBlockVector();
+        cache_checked = new LocalBlockVectorSet();
+        cache_results = new LocalBlockVectorSet();
+        resetCache();
+    }
+
+    private void resetCache() {
+        cache_checked.clear();
+        cache_results.clear();
+        cache_checked.setOffset(Integer.MIN_VALUE, Integer.MIN_VALUE);
+        cache_results.setOffset(Integer.MIN_VALUE, Integer.MIN_VALUE);
+    }
+
+    @Override
+    public boolean test(Vector vector) {
+        return test(vector.getBlockX(), vector.getBlockY(), vector.getBlockZ());
+    }
+
+    public boolean test(int x, int y, int z) {
+        if (cache_checked.contains(x, y, z)) {
+            return cache_results.contains(x, y, z);
+        }
+        boolean result = getMask().test(mutable.setComponents(x, y, z));
+        try {
+            cache_checked.add(x, y, z);
+            if (result) cache_results.add(x, y, z);
+        } catch (UnsupportedOperationException ignore) {
+            resetCache();
+            cache_checked.setOffset(x, z);
+            cache_results.setOffset(x, z);
+            cache_checked.add(x, y, z);
+            if (result) cache_results.add(x, y, z);
+        }
+        return result;
+    }
+}

core/src/main/java/com/boydti/fawe/object/mask/SurfaceMask.java

@@ -11,7 +11,7 @@ public class SurfaceMask extends AdjacentAnyMask {
 
     public SurfaceMask(Extent extent) {
         super(new BlockMask(extent, new BaseBlock(0)));
-        BlockMask mask = (BlockMask) getMask();
+        BlockMask mask = (BlockMask) getParentMask().getMask();
         for (int id = 0; id < 256; id++) {
             if (FaweCache.canPassThrough(id, 0)) {
                 mask.add(new BaseBlock(id, -1));
@@ -22,6 +22,6 @@ public class SurfaceMask extends AdjacentAnyMask {
 
     @Override
     public boolean test(Vector v) {
-        return !getMask().test(v) && super.test(v);
+        return !getParentMask().test(v.getBlockX(), v.getBlockY(), v.getBlockZ()) && super.test(v);
     }
 }

core/src/main/java/com/boydti/fawe/regions/general/plot/MoveTo512.java

@@ -0,0 +1,88 @@
+package com.boydti.fawe.regions.general.plot;
+
+import com.boydti.fawe.jnbt.anvil.MCAChunk;
+import com.boydti.fawe.jnbt.anvil.MCAQueue;
+import com.boydti.fawe.jnbt.anvil.MCAWriter;
+import com.boydti.fawe.object.FaweQueue;
+import com.boydti.fawe.util.SetQueue;
+import com.intellectualcrafters.plot.PS;
+import com.intellectualcrafters.plot.commands.CommandCategory;
+import com.intellectualcrafters.plot.commands.MainCommand;
+import com.intellectualcrafters.plot.commands.RequiredType;
+import com.intellectualcrafters.plot.config.C;
+import com.intellectualcrafters.plot.object.Location;
+import com.intellectualcrafters.plot.object.Plot;
+import com.intellectualcrafters.plot.object.PlotArea;
+import com.intellectualcrafters.plot.object.PlotId;
+import com.intellectualcrafters.plot.object.PlotPlayer;
+import com.intellectualcrafters.plot.object.RunnableVal2;
+import com.intellectualcrafters.plot.object.RunnableVal3;
+import com.plotsquared.general.commands.Command;
+import com.plotsquared.general.commands.CommandDeclaration;
+import java.io.File;
+
+@CommandDeclaration(
+        command = "moveto512",
+        permission = "plots.moveto512",
+        category = CommandCategory.ADMINISTRATION,
+        requiredType = RequiredType.CONSOLE,
+        description = "Move plots to a 512 sized region",
+        usage = "/plots moveto512 [world]"
+)
+public class MoveTo512 extends Command {
+    public MoveTo512() {
+        super(MainCommand.getInstance(), true);
+    }
+
+    @Override
+    public void execute(PlotPlayer player, String[] args, RunnableVal3<Command, Runnable, Runnable> confirm, RunnableVal2<Command, CommandResult> whenDone) throws CommandException {
+        checkTrue(args.length == 1, C.COMMAND_SYNTAX, getUsage());
+        PlotArea area = PS.get().getPlotAreaByString(args[0]);
+        check(area, C.COMMAND_SYNTAX, getUsage());
+
+        FaweQueue defaultQueue = SetQueue.IMP.getNewQueue(area.worldname, true, false);
+        MCAQueue queueFrom = new MCAQueue(area.worldname, defaultQueue.getSaveFolder(), defaultQueue.hasSky());
+
+        File folder = null; // TODO
+
+        int minRoad = 5;
+        PlotId nextId = new PlotId(0, 0);
+        for (Plot plot : area.getPlots()) {
+            Location bot = plot.getBottomAbs();
+            Location top = plot.getTopAbs();
+
+            int pLen = Math.max(top.getX() - bot.getX(), 512 - minRoad);
+            int roadWidth = pLen - 512;
+            int roadPosLower;
+            if ((roadWidth & 1) == 0) {
+                roadPosLower = (short) (Math.floor(roadWidth / 2) - 1);
+            } else {
+                roadPosLower = (short) Math.floor(roadWidth / 2);
+            }
+            int roadPosUpper = 512 - roadWidth + roadPosLower;
+            MCAWriter writer = new MCAWriter(512, 512, folder) {
+
+                @Override
+                public boolean shouldWrite(int chunkX, int chunkZ) {
+                    return true;
+                }
+
+                @Override
+                public MCAChunk write(MCAChunk input, int bx, int tx, int bz, int tz) {
+//                    int obx = bx - oX;
+//                    int obz = bz - oZ;
+//                    int otx = tx - oX;
+//                    int otz = tz - oZ;
+//                    int otherBCX = (obx) >> 4;
+//                    int otherBCZ = (obz) >> 4;
+//                    int otherTCX = (otx) >> 4;
+//                    int otherTCZ = (otz) >> 4;
+                    return input;
+                }
+            };
+            writer.setMCAOffset(nextId.x, nextId.y);
+            nextId = nextId.getNextId(1);
+        }
+
+    }
+}

core/src/main/java/com/sk89q/worldedit/command/HistoryCommands.java

@@ -74,14 +74,16 @@ public class HistoryCommands {
     @Command(
             aliases = { "/frb", "frb", "fawerollback", "/fawerollback", "/rollback" },
             usage = "<user=Empire92> <radius=5> <time=3d4h>",
-            desc = "Undo a specific edit. The time uses s, m, h, d, y.",
+            desc = "Undo a specific edit. " +
+                    " - The time uses s, m, h, d, y.\n" +
+                    " - Import from disk: /frb #import",
             min = 1,
             max = 3
     )
     @CommandPermissions("worldedit.history.rollback")
     public void faweRollback(final Player player, LocalSession session, final String user, @Optional("0") int radius, @Optional("0") String time) throws WorldEditException {
         if (!Settings.IMP.HISTORY.USE_DATABASE) {
-            BBC.SETTING_DISABLE.send(player, "history.use-database");
+            BBC.SETTING_DISABLE.send(player, "history.use-database (Import with /frb #import )");
             return;
         }
         switch (user.charAt(0)) {
@@ -115,7 +117,7 @@ public class HistoryCommands {
                                             continue;
                                         }
                                         RollbackOptimizedHistory rollback = new RollbackOptimizedHistory(world, uuid, Integer.parseInt(name.substring(0, name.length() - 3)));
-                                        DiskStorageHistory.DiskStorageSummary summary = rollback.summarize(RegionWrapper.GLOBAL(), true);
+                                        DiskStorageHistory.DiskStorageSummary summary = rollback.summarize(RegionWrapper.GLOBAL(), false);
                                         if (summary != null) {
                                             rollback.setDimensions(new Vector(summary.minX, 0, summary.minZ), new Vector(summary.maxX, 255, summary.maxZ));
                                             rollback.setTime(historyFile.lastModified());
@@ -125,6 +127,7 @@ public class HistoryCommands {
                                         }
                                     }
                                 } catch (IllegalArgumentException e) {
+                                    e.printStackTrace();
                                     continue;
                                 }
                             }
@@ -135,7 +138,7 @@ public class HistoryCommands {
                 }
                 String toParse = user.substring(1);
                 if (!MathMan.isInteger(toParse)) {
-                    BBC.COMMAND_SYNTAX.send(player, "/frb <user> <radius> <time>");
+                    BBC.COMMAND_SYNTAX.send(player, "/frb #<index>");
                     return;
                 }
                 int index = Integer.parseInt(toParse);

core/src/main/java/com/sk89q/worldedit/command/MethodCommands.java

@@ -27,7 +27,7 @@ public class MethodCommands {
 
     @Deprecated
     public MethodCommands() {
-        this.worldEdit = WorldEdit.getInstance();
+        this(WorldEdit.getInstance());
     }
 
     public void register(Method method, CommandCallable callable, Dispatcher dispatcher) {

core/src/main/java/com/sk89q/worldedit/command/RegionCommands.java

@@ -94,7 +94,7 @@ import static com.sk89q.worldedit.regions.Regions.minimumBlockY;
  * Commands that operate on regions.
  */
 @Command(aliases = {}, desc = "Commands that operate on regions: [More Info](http://wiki.sk89q.com/wiki/WorldEdit/Region_operations)")
-public class RegionCommands {
+public class RegionCommands extends MethodCommands{
 
     private final WorldEdit worldEdit;
 
@@ -104,6 +104,7 @@ public class RegionCommands {
      * @param worldEdit reference to WorldEdit
      */
     public RegionCommands(WorldEdit worldEdit) {
+        super(worldEdit);
         checkNotNull(worldEdit);
         this.worldEdit = worldEdit;
     }
@@ -306,13 +307,14 @@ public class RegionCommands {
     )
     @CommandPermissions("worldedit.region.replace")
     @Logging(REGION)
-    public void replace(Player player, EditSession editSession, @Selection Region region, @Optional Mask from, Pattern to) throws WorldEditException {
+    public void replace(FawePlayer player, EditSession editSession, @Selection Region region, @Optional Mask from, Pattern to, CommandContext context) throws WorldEditException {
+        player.checkConfirmation(getArguments(context));
         if (from == null) {
             from = new ExistingBlockMask(editSession);
         }
         int affected = editSession.replaceBlocks(region, from, to);
         BBC.VISITOR_BLOCK.send(player, affected);
-        if (!FawePlayer.wrap(player).hasPermission("fawe.tips")) BBC.TIP_REPLACE_ID.or(BBC.TIP_REPLACE_LIGHT, BBC.TIP_REPLACE_MARKER, BBC.TIP_TAB_COMPLETE).send(player);
+        if (!player.hasPermission("fawe.tips")) BBC.TIP_REPLACE_ID.or(BBC.TIP_REPLACE_LIGHT, BBC.TIP_REPLACE_MARKER, BBC.TIP_TAB_COMPLETE).send(player);
     }
 
     @Command(
@@ -324,7 +326,8 @@ public class RegionCommands {
     )
     @CommandPermissions("worldedit.region.set")
     @Logging(REGION)
-    public void set(Player player, LocalSession session, EditSession editSession, @Selection Region selection, Pattern to) throws WorldEditException {
+    public void set(FawePlayer player, LocalSession session, EditSession editSession, @Selection Region selection, Pattern to, CommandContext context) throws WorldEditException {
+        player.checkConfirmation(getArguments(context));
         int affected;
         if (to instanceof BlockPattern) {
             affected = editSession.setBlocks(selection, ((BlockPattern) to).getBlock());
@@ -333,7 +336,7 @@ public class RegionCommands {
         }
         if (affected != 0) {
             BBC.OPERATION.send(player, affected);
-            if (!FawePlayer.wrap(player).hasPermission("fawe.tips")) BBC.TIP_FAST.or(BBC.TIP_CANCEL, BBC.TIP_MASK, BBC.TIP_MASK_ANGLE, BBC.TIP_SET_LINEAR, BBC.TIP_SURFACE_SPREAD, BBC.TIP_SET_HAND).send(player);
+            if (!player.hasPermission("fawe.tips")) BBC.TIP_FAST.or(BBC.TIP_CANCEL, BBC.TIP_MASK, BBC.TIP_MASK_ANGLE, BBC.TIP_SET_LINEAR, BBC.TIP_SURFACE_SPREAD, BBC.TIP_SET_HAND).send(player);
         }
     }
 

core/src/main/java/com/sk89q/worldedit/command/UtilityCommands.java

@@ -516,6 +516,16 @@ public class UtilityCommands extends MethodCommands {
         }
     }
 
+    @Command(
+            aliases = { "/confirm" },
+            desc = "Confirm a command"
+    )
+    public void confirm(FawePlayer fp) throws WorldEditException {
+        if (!fp.confirm()) {
+            BBC.NOTHING_CONFIRMED.send(fp);
+        }
+    }
+
     @Command(
         aliases = { "/help" },
         usage = "[<command>]",
@@ -523,7 +533,6 @@ public class UtilityCommands extends MethodCommands {
         min = 0,
         max = -1
     )
-    @CommandPermissions("worldedit.help")
     public void help(Actor actor, CommandContext args) throws WorldEditException {
         help(args, worldEdit, actor);
     }
@@ -852,6 +861,7 @@ public class UtilityCommands extends MethodCommands {
                             aliases = new ArrayList<CommandMapping>(dispatcher.getCommands());
                         } else {
                             aliases = new ArrayList<>(mappings);
+                            visited.add(cat);
                         }
                         page = Math.max(0, page);
                     } else if (grouped.size() > 1) {