--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/fschmidt/tools/Packages.java	Sun Oct 05 17:24:15 2025 -0600
@@ -0,0 +1,92 @@
+/*
+Copyright (c) 2008  Franklin Schmidt <fschmidt@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+package fschmidt.tools;
+
+import java.io.File;
+import java.util.Set;
+import java.util.HashSet;
+import java.util.Arrays;
+import java.util.regex.Pattern;
+import fschmidt.util.java.ObjectUtils;
+
+
+/**
+ * Lists nextag packages.  Written for javadoc and used like:
+ * <pre>
+ *     javadoc `java fschmidt.tools.Packages`
+ * </pre>
+ *
+ * @author  frank
+ */
+public final class Packages {
+
+	public static void main (String args[]) {
+		Set<String> list = new HashSet<String>();
+        for( int i=0; i<args.length; i++ ) {
+            pkgs(list,args[i]);
+        }
+		String[] a = (String[])list.toArray(new String[0]);
+		for( int i=0; i<a.length; i++ ) {
+			System.out.println(a[i]);
+		}
+	}
+
+	static void pkgs(Set<String> list,String pkg) {
+        String[] dirs = toDirs(pkg);
+        boolean hasFiles = false;
+        for( int j=0; j<dirs.length; j++ ) {
+            String dir = dirs[j];
+    		String[] ls = new File(dir).list();
+    		if( ls == null )
+    			continue;
+    		String[] subs = new String[ls.length];
+    		for( int i=0; i<ls.length; i++ ) {
+    			File f = new File(dir + File.separator + ls[i]);
+    			if( f.isDirectory() ) {
+                    pkgs( list, pkg + "." + ls[i] );
+    			}
+                if( f.getName().endsWith(".java") )
+                    hasFiles = true;
+    		}
+        }
+        if( hasFiles )
+            list.add(pkg);
+	}
+
+	static String[] paths = System.getProperty("java.class.path").split(Pattern.quote(File.pathSeparator),-1);
+
+    static String[] toDirs(String pkg) {
+        String relPath = ObjectUtils.join(
+            Arrays.asList(pkg.split("\\.",-1)), File.separator
+        );
+        Set<String> list = new HashSet<String>();
+		for( int i=0; i<paths.length; i++ ) {
+			String path = paths[i];
+			if( !path.endsWith(File.separator) )
+				path += File.separator;
+			if( new File(path+relPath).exists() )
+				list.add(path+relPath);
+		}
+		return (String[])list.toArray(new String[0]);
+	}
+}