1 files changed, 74 insertions, 0 deletions
diff --git a/src/stringprep/stringprep.erl b/src/stringprep/stringprep.erl
new file mode 100644
index 000000000..919ae7a44
--- /dev/null
+++ b/src/stringprep/stringprep.erl
@@ -0,0 +1,74 @@
+%%%----------------------------------------------------------------------
+%%% File    : stringprep.erl
+%%% Author  : Alexey Shchepin <alexey@sevcom.net>
+%%% Purpose : Interface to stringprep_drv
+%%% Created : 16 Feb 2003 by Alexey Shchepin <alexey@sevcom.net>
+%%% Id      : $Id$
+%%%----------------------------------------------------------------------
+
+-module(stringprep).
+-author('alexey@sevcom.net').
+-vsn('$Revision$ ').
+
+-behaviour(gen_server).
+
+-export([start/0, start_link/0, tolower/1]).
+
+%% Internal exports, call-back functions.
+-export([init/1,
+	 handle_call/3,
+	 handle_cast/2,
+	 handle_info/2,
+	 code_change/3,
+	 terminate/2]).
+
+
+
+start() ->
+    gen_server:start({local, ?MODULE}, ?MODULE, [], []).
+
+start_link() ->
+    gen_server:start_link({local, ?MODULE}, ?MODULE, [], []).
+
+init([]) ->
+    ok = erl_ddll:load_driver(".", stringprep_drv),
+    Port = open_port({spawn, stringprep_drv}, []),
+    ets:new(stringprep_table, [set, public, named_table]),
+    ets:insert(stringprep_table, {port, Port}),
+    {ok, Port}.
+
+
+%%% --------------------------------------------------------
+%%% The call-back functions.
+%%% --------------------------------------------------------
+
+handle_call(_, _, State) ->
+    {noreply, State}.
+
+handle_cast(_, State) ->
+    {noreply, State}.
+
+handle_info({'EXIT', Pid, Reason}, Port) ->
+    {noreply, Port};
+
+handle_info({'EXIT', Port, Reason}, Port) ->
+    {stop, {port_died, Reason}, Port};
+handle_info(_, State) ->
+    {noreply, State}.
+
+code_change(OldVsn, State, Extra) ->
+    {ok, State}.
+
+terminate(_Reason, Port) ->
+    Port ! {self, close},
+    ok.
+
+
+
+tolower(String) ->
+    [{port, Port} | _] = ets:lookup(stringprep_table, port),
+    Res = port_control(Port, 1, String),
+    binary_to_list(Res).
+
+
+