Wrote a simple miso scene parser.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@690 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/tools/xml/MisoSceneParser.java

@@ -0,0 +1,58 @@
+//
+// $Id: MisoSceneParser.java,v 1.1 2001/11/29 20:34:13 mdb Exp $
+
+package com.threerings.miso.tools.scene.xml;
+
+import java.io.IOException;
+import java.io.FileInputStream;
+
+import org.xml.sax.SAXException;
+import org.apache.commons.digester.Digester;
+
+import com.threerings.miso.scene.MisoSceneModel;
+
+/**
+ * A simple class for parsing a standalone miso scene model.
+ */
+public class MisoSceneParser
+{
+    /**
+     * Constructs a miso scene parser that parses scenes with the
+     * specified XML path prefix. See the {@link
+     * MisoSceneRuleSet#MisoSceneRuleSet} documentation for more
+     * information.
+     */
+    public MisoSceneParser (String prefix)
+    {
+        // create and configure our digester
+        _digester = new Digester();
+        MisoSceneRuleSet set = new MisoSceneRuleSet();
+        set.setPrefix(prefix);
+        _digester.addRuleSet(set);
+        _digester.addSetNext(prefix, "setSceneModel",
+                             MisoSceneModel.class.getName());
+    }
+
+    /**
+     * Parses the XML file at the specified path into a miso scene model.
+     */
+    public MisoSceneModel parseScene (String path)
+        throws IOException, SAXException
+    {
+        _model = null;
+        _digester.push(this);
+        _digester.parse(new FileInputStream(path));
+        return _model;
+    }
+
+    /**
+     * Called by the parser once the scene is parsed.
+     */
+    public void setSceneModel (MisoSceneModel model)
+    {
+        _model = model;
+    }
+
+    protected Digester _digester;
+    protected MisoSceneModel _model;
+}