/* -*-c-*- -------------- xmixguile_cmd_dispatcher.c :
 * Implementation of the functions declared in xmixguile_cmd_dispatcher.h
 * ------------------------------------------------------------------
 *  Last change: Time-stamp: "01/08/21 23:55:06 jao"
 * ------------------------------------------------------------------
 * Copyright (C) 2001 Free Software Foundation, Inc.
 *  
 * This program 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 of the License, or
 * (at your option) any later version.
 *  
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *  
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 *  
 */

#include <mixlib/mix.h>
#include <guile/gh.h>
#include "xmixguile_cmd_dispatcher.h"

/* cmd dispatcher for use within the scm commands */
static mixguile_cmd_dispatcher_t *dispatcher_;
static mix_vm_cmd_dispatcher_t *vm_dispatcher_;

/* register a NULL-terminated list of scm commands */
void
register_scm_commands_ (const scm_command_t *commands)
{
  int k = 0;
  g_return_if_fail (commands != NULL);
  while (commands[k].name)
    {
      gh_new_procedure (commands[k].name, commands[k].func,
			commands[k].argno, commands[k].opt_argno,
			commands[k].restp);
      ++k;
    }
}

/* register the mixvm cmd dispatcher to use with commands */
void
register_cmd_dispatcher_ (mixguile_cmd_dispatcher_t *dis)
{
  g_return_if_fail (dis != NULL);
  dispatcher_ = dis;
  vm_dispatcher_ = mixguile_cmd_dispatcher_get_vm_dispatcher (dis);
}

/* commands */
static SCM
mix_command_ (SCM cmd, SCM arg)
{
  char *com, *argu;
  int len;
  gboolean result;
  
  SCM_DEFER_INTS;
  SCM_ASSERT (SCM_STRINGP (cmd), cmd, SCM_ARG1, "mix-command");
  SCM_ASSERT (SCM_STRINGP (arg), arg, SCM_ARG2, "mix-command");
  com = gh_scm2newstr (cmd, &len);
  argu = gh_scm2newstr (arg, &len);
  result = mix_vm_cmd_dispatcher_dispatch (vm_dispatcher_,
					   mix_vm_command_from_string (com),
					   argu);
  g_free (com);
  g_free (argu);
  SCM_ALLOW_INTS;
  com = (char *) mixguile_cmd_dispatcher_last_result (dispatcher_);
  if (!com || strlen (com) == 0)
    com = result? "ok" : "fail";
  return gh_str02scm (com);
}

/* NULL-terminated list of available scm commands */
const scm_command_t DEFAULT_SCM_COMMANDS_[] = {
  {"mix-command", mix_command_, 2, 0, 0},
  {NULL}
};