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/* client.c -- plugin for sawfish communication

   $Id: client.c,v 1.22 2000/08/13 20:31:01 john Exp $

   Copyright (C) 1999, 2000 John Harper <john@dcs.warwick.ac.uk>

   This file is part of sawmill.

   sawmill is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   sawmill is distributed in the hope that it will be useful, but
   WITHOUT ANY WARRANTY; without even the implied warranty of
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with sawmill; see the file COPYING.   If not, write to
   the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */

#include "libclient.h"
#include <stdlib.h>
#include <rep.h>

static repv display;

DEFSYM(remote_sawfish, "remote-sawfish");
DEFSTRING(err_remote_sawfish, "Remote sawfish error");

DEFUN ("%sawfish-client-eval", F_sawfish_client_eval,
       S_sawfish_client_eval, (repv form, repv async), rep_Subr2)
    DEFSTRING (fmt, "%S");
    char *result;
    int length, error;

    form = Fformat (rep_list_3 (Qnil, rep_VAL (&fmt), form));
    if (form == rep_NULL)
      return rep_NULL;

    if (client_open (rep_STR (display)) != 0)
      DEFSTRING (foo, "can't connect to sawfish on display");
      return Fsignal (Qerror, rep_list_2 (rep_VAL (&foo), display));

    result = client_eval (rep_STR (form),
                    (async == Qnil) ? &length : 0,
                    (async == Qnil) ? &error : 0);

    client_close ();

    if (result != 0)
      repv ret = rep_string_dupn (result, length);
      if (error)
          return Fsignal (Qremote_sawfish, rep_LIST_1 (ret));
          return ret;
    else if (async == Qnil)
      DEFSTRING (foo, "unknown error");
      return Fsignal (Qremote_sawfish, rep_LIST_1 (rep_VAL (&foo)));
      return Qnil;

DEFUN ("sawfish-client-eval", Fsawfish_client_eval,
       Ssawfish_client_eval, (repv form, repv no_read), rep_Subr2)
    repv out = F_sawfish_client_eval (form, Qnil);

    if (no_read == Qnil && out != rep_NULL)
      out = Fread (Fmake_string_input_stream (out, Qnil));

    return out;

DEFUN ("sawfish-client-eval-async", Fsawfish_client_eval_async,
       Ssawfish_client_eval_async, (repv form), rep_Subr1)
    return F_sawfish_client_eval (form, Qt);

DEFUN ("sawfish-client-display", Fsawfish_client_display,
       Ssawfish_client_display, (repv arg), rep_Subr1)
    repv old = display;
    if (rep_STRINGP (arg))
      display = arg;
    return old;

rep_dl_init (void)
    repv tem;
    char *dpy = getenv ("DISPLAY");
    if (dpy == 0)
      dpy = ":0";
    display = rep_string_dup (dpy);
    rep_mark_static (&display);

    rep_INTERN (remote_sawfish);
    rep_ERROR (remote_sawfish);

    tem = rep_push_structure ("sawfish.client");
    rep_ADD_INTERNAL_SUBR (S_sawfish_client_eval);
    rep_ADD_SUBR (Ssawfish_client_eval);
    rep_ADD_SUBR (Ssawfish_client_eval_async);
    rep_ADD_SUBR (Ssawfish_client_display);
    return rep_pop_structure (tem);

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