Prepare to add callouts

bot.ml

@@ -7,16 +7,40 @@ let write iobuf command args text =
     print_endline ("--> " ^ (Command.as_string cmd));
     Iobuf.write iobuf cmd
 
+let msg iobuf recip text =
+  write iobuf "PRIVMSG" [recip] (Some text)
+
+let calc_re = Str.regexp "^calc \\(.*\\)"
+let calc iobuf forum text =
+  if Str.string_match calc_re text 0 then
+    msg iobuf forum (Str.matched_group 1 text)
+
+let handle_privmsg bot iobuf sender forum text =
+  calc iobuf forum text;
+  match (Infobot.lookup bot.store text) with
+    | Some reply ->
+      msg iobuf forum reply
+    | None ->
+      ()
+      
+
 let handle_command bot iobuf cmd =
   print_endline ("<-- " ^ (Command.as_string cmd));
-  Infobot.handle_command bot.store iobuf cmd;
-  match Command.as_tuple cmd with
+  match (Command.as_tuple cmd) with
+    | (Some sender, "PRIVMSG", [target], Some text) ->
+      let forum =
+        if Irc.is_channel target then
+          target
+        else
+          sender
+      in
+      handle_privmsg bot iobuf sender forum text
     | (_, "PING", _, text) ->
         write iobuf "PONG" [] text
     | (_, "001", _, _) ->
         write iobuf "JOIN" ["#bot"] None
     | (Some sender, "JOIN", [], Some chan) ->
-        write iobuf "PRIVMSG" [chan] (Some "hi asl")
+        msg iobuf chan "hi asl"
     | _ ->
         ()
 
@@ -25,7 +49,7 @@ let handle_error iobuf str =
 
 let main () =
   let host = Unix.gethostbyname "woozle.org" in
-  let dispatcher = Dispatch.create 5 in
+  let dispatcher = Dispatch.create () in
   let conn = Unix.socket Unix.PF_INET Unix.SOCK_STREAM 0 in
   let bot = {store = Infobot.create "info.cdb"} in
   let _ = Unix.connect conn (Unix.ADDR_INET (host.Unix.h_addr_list.(0), 6667)) in

dispatch.ml

@@ -22,7 +22,7 @@ type t = {
   timers : Timer.t ref;
 }
 
-let create size =
+let create ?(size=5) () =
   {read_fds = ref [];
    write_fds = ref [];
    except_fds = ref [];

dispatch.mli

@@ -10,7 +10,7 @@ type fd_handler = Unix.file_descr -> event -> unit
 type timer_handler = float -> unit
 (** [timer_handler d when] is called at or after [when] *)
 
-val create : int -> t
+val create : ?size:int -> unit -> t
 (** Create a new event dispatcher, preallocating [size] fd events.
     [size] is just a hint, the fd list will grow on demand. *)
 

infobot.ml

@@ -39,7 +39,7 @@ let choose_one ib key =
     | keys ->
         choice keys
 
-let handle_privmsg store iobuf sender target text =
+let lookup store text =
   try
     let text, factoid =
       try
@@ -51,23 +51,12 @@ let handle_privmsg store iobuf sender target text =
           | Some stext ->
               (stext, choose_one store stext)
     in
-    let response = 
-      match factoid.[0] with
-        | ':' ->
-            "\001ACTION " ^ (Str.string_after factoid 1) ^ "\001"
-        | '\\' ->
-            Str.string_after factoid 1
-        | _ ->
-            Printf.sprintf "I overheard that %s is %s" text factoid
-    in
-      Iobuf.write iobuf (Command.create None "PRIVMSG" [target] (Some response))
+    match factoid.[0] with
+      | ':' ->
+        Some ("\001ACTION " ^ (Str.string_after factoid 1) ^ "\001")
+      | '\\' ->
+        Some (Str.string_after factoid 1)
+      | _ ->
+        Some (Printf.sprintf "I overheard that %s is %s" text factoid)
   with Not_found ->
-    ()
-
-let handle_command store iobuf cmd =
-  match Command.as_tuple cmd with
-    | (Some sender, "PRIVMSG", [target], Some text) ->
-        if Irc.is_channel target then
-          handle_privmsg store iobuf sender target text
-    | _ ->
-        ()
+    None

process.ml

@@ -0,0 +1,15 @@
+type t = {
+  
+}
+
+let create iobuf prog args =
+  let fd0_exit, fd0_entr = Unix.pipe () in
+  let fd1_exit, fd1_entr = Unix.pipe () in
+  let fd2_exit, fd2_entr = Unix.pipe () in
+  let pid = Unix.create_process prog args fd0_exit fd1_entr fd2_entr in
+  
+
+let handle_event process fd event =
+  match event with
+    | Dispatch.Input ->
+