Created a persistent tileset name to id broker implementation; wrote an

ANT task for creating tileset bundles.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@659 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/tile/tools/MapFileTileSetIDBroker.java

@@ -0,0 +1,92 @@
+//
+// $Id: MapFileTileSetIDBroker.java,v 1.1 2001/11/29 00:14:11 mdb Exp $
+
+package com.threerings.media.tools.tile;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+
+import java.util.HashMap;
+
+import com.samskivert.io.PersistenceException;
+
+import com.threerings.media.tile.TileSetIDBroker;
+
+/**
+ * Stores a set of tileset name to id mappings in a map file.
+ */
+public class MapFileTileSetIDBroker implements TileSetIDBroker
+{
+    /**
+     * Creates a broker that will use the specified file as its persistent
+     * store. The persistent store will be created if it does not yet
+     * exist.
+     */
+    public MapFileTileSetIDBroker (File mapfile)
+        throws PersistenceException
+    {
+        // keep this for later
+        _mapfile = mapfile;
+
+        // load up our map data
+        try {
+            FileInputStream fin = new FileInputStream(mapfile);
+            ObjectInputStream oin = new ObjectInputStream(fin);
+            _nextTileSetID = oin.readInt();
+            _map = (HashMap)oin.readObject();
+            oin.close();
+
+        } catch (FileNotFoundException fnfe) {
+            // create a blank map if our map file doesn't exist
+            _map = new HashMap();
+
+        } catch (Exception e) {
+            // other errors are more fatal
+            String errmsg = "Failure reading map file.";
+            throw new PersistenceException(errmsg, e);
+        }
+    }
+
+    // documentation inherited
+    public int getTileSetID (String tileSetName)
+        throws PersistenceException
+    {
+        Integer tsid = (Integer)_map.get(tileSetName);
+        if (tsid == null) {
+            tsid = new Integer(++_nextTileSetID);
+            _map.put(tileSetName, tsid);
+        }
+        return tsid.intValue();
+    }
+
+    // documentation inherited
+    public void commit ()
+        throws PersistenceException
+    {
+        try {
+            FileOutputStream fout = new FileOutputStream(_mapfile);
+            ObjectOutputStream oout = new ObjectOutputStream(fout);
+            oout.writeInt(_nextTileSetID);
+            oout.writeObject(_map);
+            oout.close();
+
+        } catch (IOException ioe) {
+            String errmsg = "Failure writing map file.";
+            throw new PersistenceException(errmsg, ioe);
+        }
+    }
+
+    /** Our persistent map file. */
+    protected File _mapfile;
+
+    /** The next tileset id that we'll assign. */
+    protected int _nextTileSetID;
+
+    /** Our mapping from tileset names to ids. */
+    protected HashMap _map;
+}