C++ (Cpp) print_cmdline_message Examples

Example #1

File: cmdline.c Project: rickcaudill/Pyro

/* Enter the command-line interface. HEAP is used for the command-line
   buffer. Return only if FOREVER is nonzero and get_cmdline returns
   nonzero (ESC is pushed).  */
void
enter_cmdline (char *heap, int forever)
{
  /* Initialize the data and print a message.  */
  init_cmdline ();
  grub_setjmp (restart_cmdline_env);
  init_page ();
#ifdef SUPPORT_DISKLESS
  print_network_configuration ();
  grub_putchar ('\n');
#endif
  print_cmdline_message (forever);

  while (1)
    {
      struct builtin *builtin;
      char *arg;

      *heap = 0;
      print_error ();
      errnum = ERR_NONE;

      /* Get the command-line with the minimal BASH-like interface.  */
      if (get_cmdline (PACKAGE "> ", heap, 2048, 0, 1))
	return;

      /* If there was no command, grab a new one. */
      if (! heap[0])
	continue;

      /* Find a builtin.  */
      builtin = find_command (heap);
      if (! builtin)
	continue;

      /* If BUILTIN cannot be run in the command-line, skip it.  */
      if (! (builtin->flags & BUILTIN_CMDLINE))
	{
	  errnum = ERR_UNRECOGNIZED;
	  continue;
	}

      /* Invalidate the cache, because the user may exchange removable
	 disks.  */
      buf_drive = -1;

      /* Start to count lines, only if the internal pager is in use.  */
      if (use_pager)
	count_lines = 0;
      
      /* Run BUILTIN->FUNC.  */
      arg = skip_to (1, heap);
      (builtin->func) (arg, BUILTIN_CMDLINE);

      /* Finish the line count.  */
      count_lines = -1;
    }
}

Example #2

File: cmdline.c Project: HappyBasher/LINBOv3

/* Enter the command-line interface. HEAP is used for the command-line
   buffer. Return only if FOREVER is nonzero and get_cmdline returns
   nonzero (ESC is pushed).  */
void
enter_cmdline (char *heap, int forever)
{
  if (! debug)
      debug++;

  //grub_setjmp (restart_cmdline_env);

  /* Initialize the data and print a message.  */
  current_drive = GRUB_INVALID_DRIVE;
  count_lines = -1;
  kernel_type = KERNEL_TYPE_NONE;
  errnum = 0;
  errorcheck = 1;	/* errorcheck on */
  init_page ();
  grub_putchar ('\n');
#ifdef SUPPORT_DISKLESS
  print_network_configuration ();
  grub_putchar ('\n');
#endif
  print_cmdline_message (forever);
  
  while (1)
    {
      struct builtin *builtin;
      char *arg;
      grub_error_t errnum_old;

      errnum_old = errnum;
      *heap = 0;
      if (errnum && errorcheck)
	print_error ();
      errnum = ERR_NONE;

      /* Get the command-line with the minimal BASH-like interface.  */
      prompt = PACKAGE "> ";
      maxlen = 2048;
      echo_char = 0;
      readline = 1;
      if (get_cmdline (heap))
	{
	  kernel_type = KERNEL_TYPE_NONE;
	  return;
	}

      /* If there was no command, grab a new one. */
      if (! heap[0])
	continue;

      /* Find a builtin.  */
      builtin = find_command (heap);
      if (! builtin)
	continue;

      /* If BUILTIN cannot be run in the command-line, skip it.  */
      if (! (builtin->flags & BUILTIN_CMDLINE))
	{
	  errnum = ERR_UNRECOGNIZED;
	  continue;
	}

      /* Invalidate the cache, because the user may exchange removable
	 disks.  */
      buf_drive = -1;

      /* Start to count lines, only if the internal pager is in use.  */
      if (use_pager)
	count_lines = 0;
      
      if ((builtin->func) == errnum_func || (builtin->func) == checkrange_func)
	errnum = errnum_old;

      /* find && and || */

      for (arg = skip_to (0, heap); *arg != 0; arg = skip_to (0, arg))
      {
	struct builtin *builtin1;
	int ret;
	char *arg1;
	arg1 = arg;
        if (*arg == '&' && arg[1] == '&' && (arg[2] == ' ' || arg[2] == '\t'))
        {
		/* handle the AND operator */
		arg = skip_to (0, arg);
		builtin1 = find_command (arg);
		if (! builtin1 || ! (builtin1->flags & BUILTIN_CMDLINE))
		{
			errnum = ERR_UNRECOGNIZED;
			goto next;
		}

		*arg1 = 0;
		ret = (builtin->func) (skip_to (1, heap), BUILTIN_CMDLINE);
		*arg1 = '&';
		if (ret)
		{
			arg = skip_to (1, arg);
			if ((builtin1->func) != errnum_func && (builtin1->func) != checkrange_func)
				errnum = 0;
			(builtin1->func) (arg, BUILTIN_CMDLINE);
		} else
			errnum = 0;
		goto next;
	} else if (*arg == '|' && arg[1] == '|' && (arg[2] == ' ' || arg[2] == '\t'))
	{
		/* handle the OR operator */
		arg = skip_to (0, arg);
		builtin1 = find_command (arg);
		if (! builtin1 || ! (builtin1->flags & BUILTIN_CMDLINE))
		{
			errnum = ERR_UNRECOGNIZED;
			goto next;
		}

		*arg1 = 0;
		ret = (builtin->func) (skip_to (1, heap), BUILTIN_CMDLINE);
		*arg1 = '|';
		if (! ret)
		{
			arg = skip_to (1, arg);
			if ((builtin1->func) != errnum_func && (builtin1->func) != checkrange_func)
				errnum = 0;
			(builtin1->func) (arg, BUILTIN_CMDLINE);
		} else
			errnum = 0;
		goto next;
	}
      }

	/* Run BUILTIN->FUNC.  */
	arg = (builtin->func) == commandline_func ? heap : skip_to (1, heap);
	(builtin->func) (arg, BUILTIN_CMDLINE);
next:
      /* Finish the line count.  */
      count_lines = -1;
    }
}