feature(cli): Added a CLI version of WorldEdit, and allowed most commands to be run from console (#508)

* Re-do commits to avoid awful rebase

* You can load and save a schematic file now. Still gotta setup ability to use commands as a console actor.

* Add a world override concept to LocalSession, and allow a lot more commands to be performed by actors.

* Fixed commands, and set the loaded schematic as the world override in CLI

* Properly load tags

* Added 1.14.4 data values

* Allow a majority of commands to be performed by the console.

* Fixed a lot of PR requested changes

* Added a Locatable interface and use that for getting the location of the player in commands.

* Added script support. Currently requires a newline at the end of the script.

* Shade everything to allow this to run locally - should probably minimize this to an extent later.

* Actually hook up the version

* Added a //world command to set the override

* Fixed a missed checkstyle issue

* Added CommandBlock support to Bukkit

* Make command block support configurable

* Minor cleanup and implementing a few of the final functions

* Fixed most issues from PR

* Improve UX, saving is now automatic and unknown command messages show

* Better save docs and support any clipboard format

* Include the entire formats list

* Arrays.copyOf

* Clear the world override if the selector is called on another world.

* Update logging extent to allow basic logging with non-player actors

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/Clipboard.java

@@ -61,7 +61,7 @@ public interface Clipboard extends Extent {
 
     /**
      * Returns true if the clipboard has biome data. This can be checked since {@link Extent#getBiome(BlockVector2)}
-     * strongly suggests returning {@link com.sk89q.worldedit.world.biome.BiomeTypes.OCEAN} instead of {@code null}
+     * strongly suggests returning {@link com.sk89q.worldedit.world.biome.BiomeTypes#OCEAN} instead of {@code null}
      * if biomes aren't present. However, it might not be desired to set areas to ocean if the clipboard is defaulting
      * to ocean, instead of having biomes explicitly set.
      *

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/ClipboardReader.java

@@ -23,6 +23,7 @@ import com.sk89q.worldedit.extent.clipboard.Clipboard;
 
 import java.io.Closeable;
 import java.io.IOException;
+import java.util.OptionalInt;
 
 /**
  * Reads {@code Clipboard}s.
@@ -39,4 +40,12 @@ public interface ClipboardReader extends Closeable {
      */
     Clipboard read() throws IOException;
 
+    /**
+     * Get the DataVersion from a file (if possible).
+     *
+     * @return The data version, or empty
+     */
+    default OptionalInt getDataVersion() {
+        return OptionalInt.empty();
+    }
 }

worldedit-core/src/main/java/com/sk89q/worldedit/extent/clipboard/io/SpongeSchematicReader.java

@@ -60,6 +60,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.OptionalInt;
 import java.util.stream.Collectors;
 
 import static com.google.common.base.Preconditions.checkNotNull;
@@ -72,6 +73,7 @@ public class SpongeSchematicReader extends NBTSchematicReader {
     private static final Logger log = LoggerFactory.getLogger(SpongeSchematicReader.class);
     private final NBTInputStream inputStream;
     private DataFixer fixer = null;
+    private int schematicVersion = -1;
     private int dataVersion = -1;
 
     /**
@@ -86,25 +88,18 @@ public class SpongeSchematicReader extends NBTSchematicReader {
 
     @Override
     public Clipboard read() throws IOException {
-        NamedTag rootTag = inputStream.readNamedTag();
-        if (!rootTag.getName().equals("Schematic")) {
-            throw new IOException("Tag 'Schematic' does not exist or is not first");
-        }
-        CompoundTag schematicTag = (CompoundTag) rootTag.getTag();
-
-        // Check
+        CompoundTag schematicTag = getBaseTag();
         Map<String, Tag> schematic = schematicTag.getValue();
 
-        int version = requireTag(schematic, "Version", IntTag.class).getValue();
         final Platform platform = WorldEdit.getInstance().getPlatformManager()
                 .queryCapability(Capability.WORLD_EDITING);
         int liveDataVersion = platform.getDataVersion();
 
-        if (version == 1) {
+        if (schematicVersion == 1) {
             dataVersion = 1631; // this is a relatively safe assumption unless someone imports a schematic from 1.12, e.g. sponge 7.1-
             fixer = platform.getDataFixer();
             return readVersion1(schematicTag);
-        } else if (version == 2) {
+        } else if (schematicVersion == 2) {
             dataVersion = requireTag(schematic, "DataVersion", IntTag.class).getValue();
             if (dataVersion > liveDataVersion) {
                 log.warn("Schematic was made in a newer Minecraft version ({} > {}). Data may be incompatible.",
@@ -126,6 +121,36 @@ public class SpongeSchematicReader extends NBTSchematicReader {
         throw new IOException("This schematic version is currently not supported");
     }
 
+    @Override
+    public OptionalInt getDataVersion() {
+        try {
+            CompoundTag schematicTag = getBaseTag();
+            Map<String, Tag> schematic = schematicTag.getValue();
+            if (schematicVersion == 1) {
+                return OptionalInt.of(1631);
+            } else if (schematicVersion == 2) {
+                return OptionalInt.of(requireTag(schematic, "DataVersion", IntTag.class).getValue());
+            }
+            return OptionalInt.empty();
+        } catch (IOException e) {
+            return OptionalInt.empty();
+        }
+    }
+
+    private CompoundTag getBaseTag() throws IOException {
+        NamedTag rootTag = inputStream.readNamedTag();
+        if (!rootTag.getName().equals("Schematic")) {
+            throw new IOException("Tag 'Schematic' does not exist or is not first");
+        }
+        CompoundTag schematicTag = (CompoundTag) rootTag.getTag();
+
+        // Check
+        Map<String, Tag> schematic = schematicTag.getValue();
+
+        schematicVersion = requireTag(schematic, "Version", IntTag.class).getValue();
+        return schematicTag;
+    }
+
     private BlockArrayClipboard readVersion1(CompoundTag schematicTag) throws IOException {
         BlockVector3 origin;
         Region region;