newcmd.cc

Small Device C Compiler 面向Inter8051

    {
      app->get_sim()->stop(resUSER);
      flags&= ~CONS_FROZEN;
      retval= 0;
    }
  else
    {
      if (cmdstr &&
	  *cmdstr == '\004')
	retval= 1;
      else
	{
	  class cl_cmdline *cmdline;
	  class cl_cmd *cm;
	  if (flags & CONS_ECHO)
	    dd_printf("%s\n", cmdstr);
	  cmdline= new cl_cmdline(app, cmdstr, this);
	  cmdline->init();
	  cm= cmdset->get_cmd(cmdline);
	  if (cm)
	    retval= cm->work(app, cmdline, this);
	  delete cmdline;
	  if (!cm)
	    retval= interpret(cmdstr);
	}
    }
  //retval= sim->do_cmd(cmd, this);
  un_redirect();
  /*if (!retval)
    print_prompt();*/
  free(cmdstr);
  return(retval);
}

/*
 * Old version, sim->do_cmd() falls into this if it doesn't find a new
 * command object which can handle entered command
 */

int
cl_console::interpret(char *cmd)
{
  FILE *Out= rout?rout:out;

  fprintf(Out, "Unknown command\n");
  return(0);
}

void
cl_console::set_id(int new_id)
{
  char *s;

  id= new_id;
  set_name(s= format_string("console%d", id));
  free(s);
}

void
cl_console::set_prompt(char *p)
{
  if (prompt)
    free(prompt);
  if (p &&
      *p)
    prompt= strdup(p);
  else
    prompt= 0;
}


/*
 * This console listen on a socket and can accept connection requests
 */
#ifdef SOCKET_AVAIL

cl_listen_console::cl_listen_console(int serverport, class cl_app *the_app)
{
  last_command= NULL;
  app= the_app;
  if ((sock= make_server_socket(serverport)) >= 0)
    {
      if (listen(sock, 10) < 0)
	fprintf(stderr, "Listen on port %d: %s\n",
		serverport, strerror(errno));
    }
  in= out= 0;
}

int
cl_listen_console::match(int fdnum)
{
  return(sock == fdnum);
}

int
cl_listen_console::get_in_fd(void)
{
  return(sock);
}

int
cl_listen_console::proc_input(class cl_cmdset *cmdset)
{
  int newsock;
  ACCEPT_SOCKLEN_T size;
  struct sockaddr_in sock_addr;
  class cl_commander *cmd;

  cmd= app->get_commander();
  size= sizeof(struct sockaddr); 
  newsock= accept(sock, (struct sockaddr*)&sock_addr, &size);
  if (newsock < 0)
    {
      perror("accept");
      return(0);
    }
  if (!(in= fdopen(newsock, "r+")))
    fprintf(stderr, "cannot open port for input\n");
  if (!(out= fdopen(newsock, "w+")))
    fprintf(stderr, "cannot open port for output\n");
  class cl_console *c= cmd->mk_console(in, out);
  c->flags|= CONS_INTERACTIVE;
  cmd->add_console(c);
  in= out= 0;
  return(0);
}

#endif /* SOCKET_AVAIL */


/*
 * Sub-console
 */

cl_sub_console::cl_sub_console(class cl_console *the_parent,
			       FILE *fin, FILE *fout, class cl_app *the_app):
  cl_console(fin, fout, the_app)
{
  parent= the_parent;
}

cl_sub_console::~cl_sub_console(void)
{
  class cl_commander *c= app->get_commander();

  if (parent && c)
    {
      c->activate_console(parent);
    }
}

int
cl_sub_console::init(void)
{
  class cl_commander *c= app->get_commander();

  if (parent && c)
    {
      c->deactivate_console(parent);
    }
  cl_console::init();
  flags|= CONS_ECHO;
  return(0);
}


/*
 * Command interpreter
 *____________________________________________________________________________
 */

cl_commander::cl_commander(class cl_app *the_app, class cl_cmdset *acmdset
			   /*, class cl_sim *asim*/):
  cl_base()
{
  app= the_app;
  cons= new cl_list(1, 1); 
  actual_console= frozen_console= 0;
  cmdset= acmdset;
}

int
cl_commander::init(void)
{
  class cl_optref console_on_option(this);

  console_on_option.init();
  console_on_option.use("console_on");

  cl_base::init();
  set_name("Commander");
  
  char *Config= app->args->get_sarg(0, "Config");
  if (Config)
    {
      class cl_console *con= mk_console(0/*"/dev/tty"*/);
      add_console(con);
    }

  //if (app->args->arg_avail('c'))
    {
      char *cn= console_on_option.get_value(cn);
      if (cn)
	add_console(mk_console(cn, cn));
    }
#ifdef SOCKET_AVAIL
  if (app->args->arg_avail('Z'))
    add_console(mk_console(app->args->get_iarg(0, "Zport")));
  if (app->args->arg_avail('r'))
    add_console(mk_console(app->args->get_iarg('r', 0)));
#endif
  if (cons->get_count() == 0)
    add_console(mk_console(stdin, stdout));
  return(0);
}

cl_commander::~cl_commander(void)
{
  delete cons;
  delete cmdset;
}

class cl_console *
cl_commander::mk_console(char *fin, char *fout)
{
  return(new cl_console(fin, fout, app));
}

class cl_console *
cl_commander::mk_console(FILE *fin, FILE *fout)
{
  return(new cl_console(fin, fout, app));
}

#ifdef SOCKET_AVAIL
class cl_console *
cl_commander::mk_console(int portnumber)
{
  return(new cl_listen_console(portnumber, app));
}
#endif

void
cl_commander::add_console(class cl_console *console)
{
  if (!console)
    return;
  int i=cons->add(console);
  console->set_id(i);
  console->init();
  set_fd_set();
}

void
cl_commander::del_console(class cl_console *console)
{
  cons->disconn(console);
  set_fd_set();
}

void
cl_commander::activate_console(class cl_console *console)
{
  console->flags&= ~CONS_INACTIVE;
  //console->print_prompt();
  set_fd_set();
}

void
cl_commander::deactivate_console(class cl_console *console)
{
  console->flags|= CONS_INACTIVE;
  set_fd_set();
}

void
cl_commander::set_fd_set(void)
{
  int i;

  //fprintf(stderr, "** Setting fd set\n");  
  FD_ZERO(&read_set);
  fd_num= 0;
  for (i= 0; i < cons->count; i++)
    {
      int fd;
      class cl_console *c= (class cl_console*)(cons->at(i));
      if ((fd= c->get_in_fd()) >= 0)
	{
	  if ((c->flags & CONS_FROZEN) == 0 ||
	      (c->flags & CONS_INTERACTIVE) != 0)
	    {
	      FD_SET(fd, &read_set);
	      if (fd > fd_num)
		fd_num= fd;
	    }
	}
      else
	;//fprintf(stderr, "** Skipping console %p\n",c);
    }
  fd_num++;
}


/*
 * Printing to all consoles
 */

int
cl_commander::all_printf(char *format, ...)
{
  va_list ap;
  int i, ret= 0;
  
  for (i= 0; i < cons->count; i++)
    {
      class cl_console *c= (class cl_console*)(cons->at(i));
      FILE *Out= c->get_out();
      if (Out)
	{
	  va_start(ap, format);
	  ret= cmd_do_print(Out, format, ap);
	  va_end(ap);
	}
    }
  return(ret);
}

void
cl_commander::prompt(void)
{
  int i;
  
  for (i= 0; i < cons->count; i++)
    {
      class cl_console *c= (class cl_console*)(cons->at(i));
      c->print_prompt();
    }
}

int
cl_commander::all_print(char *string, int length)
{
  int i;
  
  for (i= 0; i < cons->count; i++)
    {
      class cl_console *c= (class cl_console*)(cons->at(i));
      FILE *Out= c->get_out();
      if (Out)
	{
	  for (int j= 0; j < length; j++)
	    putc(string[j], Out);
	}
    }
  return(0);
}

/*
 * Printing to actual_console
 */

int
cl_commander::dd_printf(char *format, ...)
{
  va_list ap;
  int ret= 0;
  FILE *f;

  if (actual_console)
    f= actual_console->get_out();
  else if (frozen_console)
    f= frozen_console->get_out();
  else
    f= 0;
  if (/*actual_console &&
	actual_console->out*/f)
    {
      va_start(ap, format);
      ret= cmd_do_print(f/*actual_console->out*/, format, ap);
      va_end(ap);
    }
  return(ret);
}

/*
 * Printing to consoles which have CONS_DEBUG flag set
 */

int
cl_commander::debug(char *format, ...)
{
  va_list ap;
  int i, ret= 0;

  for (i= 0; i < cons->count; i++)
    {
      class cl_console *c= (class cl_console*)(cons->at(i));
      FILE *Out= c->get_out();
      if (Out &&
	  c->flags & CONS_DEBUG)
	{
	  va_start(ap, format);
	  ret= cmd_do_print(Out, format, ap);
	  va_end(ap);
	}
    }
  return(ret);
}

int
cl_commander::flag_printf(int iflags, char *format, ...)
{
  va_list ap;
  int i, ret= 0;

  for (i= 0; i < cons->count; i++)
    {
      class cl_console *c= (class cl_console*)(cons->at(i));
      FILE *Out= c->get_out();
      if (Out &&
	  (c->flags & iflags) == iflags)
	{
	  va_start(ap, format);
	  ret= cmd_do_print(Out, format, ap);
	  va_end(ap);
	}
    }
  return(ret);
}

int
cl_commander::input_avail(void)
{
  struct timeval tv;
  int i;

  tv.tv_sec= tv.tv_usec= 0;
  active_set= read_set;
  i= select(fd_num, &active_set, NULL, NULL, &tv);
  return(i);
}

int
cl_commander::input_avail_on_frozen(void)
{
  int fd;

  if (!frozen_console)
    return(0);
  if ((fd= frozen_console->get_in_fd()) >= 0 &&
      !isatty(fd))
    return(0);
  return(frozen_console->input_avail());
}

int
cl_commander::wait_input(void)
{
  int i;

  active_set= read_set;
  prompt();
  i= select(fd_num, &active_set, NULL, NULL, NULL);
  return(i);
}

int
cl_commander::proc_input(void)
{
  int i;

  for (i= 0; i < fd_num; i++)
    if (FD_ISSET(i, &active_set))
      {
	class cl_console *c;
	int j;
	for (j= 0; j < cons->count; j++)
	  {
	    c= (class cl_console*)(cons->at(j));
	    if (c->match(i))
	      {
		actual_console= c;
		int retval= c->proc_input(cmdset);
		if (retval)
		  {
		    del_console(c);
		    delete c;
		  }
		actual_console= 0;
		return(cons->count == 0);
	      }
	  }
      }
  return(0);
}


/* End of cmd.src/newcmd.cc */