--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tools/bsd_license.ml	Thu May 12 18:09:36 2016 -0500
@@ -0,0 +1,74 @@
+let read_line () = 
+  try
+    Some (read_line ())
+  with End_of_file -> None
+
+let print_bsd_licence () = begin
+  print_endline " * Three-clause BSD Licence";
+  print_endline " *";
+  print_endline " * All rights reserved.";
+  print_endline " *";
+  print_endline " * Redistribution and use in source and binary forms, with or without";
+  print_endline " * modification, are permitted provided that the following conditions are met:";
+  print_endline " *";
+  print_endline " * - Redistributions of source code must retain the above copyright notice,";
+  print_endline " *   this list of conditions and the following disclaimer.";
+  print_endline " * - Redistributions in binary form must reproduce the above copyright notice,";
+  print_endline " *   this list of conditions and the following disclaimer in the documentation";
+  print_endline " *   and/or other materials provided with the distribution.";
+  print_endline " * - The names of contributors may not be used to endorse or promote products";
+  print_endline " *   derived from this software without specific prior written permission.";
+  print_endline " *";
+  print_endline " * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS \"AS IS\"";
+  print_endline " * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE";
+  print_endline " * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE";
+  print_endline " * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE";
+  print_endline " * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR ";
+  print_endline " * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF";
+  print_endline " * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS";
+  print_endline " * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN";
+  print_endline " * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)";
+  print_endline " * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE";
+  print_endline " * POSSIBILITY OF SUCH DAMAGE."
+end
+   
+let rec initial () =
+  match read_line () with
+  | None -> ()
+  | Some line ->
+      let trimmed = String.trim line in
+      if String.length trimmed >= 12 && String.sub trimmed 0 12 = "(* Copyright" then begin
+        print_endline line;
+        copyright_block ()
+      end else
+        print_endline line;
+      initial ()
+
+and copyright_block () =
+  match read_line () with
+  | None -> ()
+  | Some line ->
+      let trimmed = String.trim line in
+      if String.length trimmed >= 2 && String.sub trimmed 0 2 = "*)" then begin
+        print_endline line;
+        initial ()
+      end else if String.length trimmed >= 31 && String.sub trimmed 0 31 = "* This work is licensed under a" then begin
+        print_endline line;
+        print_bsd_licence ();
+        drop_to_end_comment ()
+      end else
+        print_endline line;
+      copyright_block ()
+
+and drop_to_end_comment () =
+  match read_line () with
+  | None -> ()
+  | Some line ->
+      let trimmed = String.trim line in
+      if String.length trimmed >= 2 && String.sub trimmed 0 2 = "*)" then begin
+        print_endline line;
+        initial ()
+      end else
+        drop_to_end_comment ()
+
+let () = initial ()