C++ (Cpp) grub_arg_show_help Examples

Example #1

File: help.c Project: DarkPostal/grub2

  int print_command_help (grub_command_t cmd)
    {
      if (grub_command_find (cmd->name))
	{
	  if (! grub_strncmp (cmd->name, currarg, grub_strlen (currarg)))
	    {
	      if (cnt++ > 0)
		grub_printf ("\n\n");
	      
	      grub_arg_show_help (cmd);
	    }
	}
      return 0;
    }

Example #2

File: help.c Project: AlfredArouna/grub2

static grub_err_t
grub_cmd_help (grub_extcmd_t ext __attribute__ ((unused)), int argc,
	       char **args)
{
  int cnt = 0;
  char *currarg;

  auto int print_command_info (grub_command_t cmd);
  auto int print_command_help (grub_command_t cmd);

  int print_command_info (grub_command_t cmd)
    {
      if ((cmd->prio & GRUB_PRIO_LIST_FLAG_ACTIVE) &&
	  (cmd->flags & GRUB_COMMAND_FLAG_CMDLINE))
	{
	  struct grub_term_output *term;
	  const char *summary_translated = _(cmd->summary);
	  char *command_help;
	  grub_uint32_t *unicode_command_help;
	  grub_uint32_t *unicode_last_position;
	  			      
	  command_help = grub_xasprintf ("%s %s", cmd->name, summary_translated);
	  if (!command_help)
	    return 1;

	  grub_utf8_to_ucs4_alloc (command_help, &unicode_command_help,
	  			   &unicode_last_position);

	  FOR_ACTIVE_TERM_OUTPUTS(term)
	  {
	    unsigned stringwidth;
	    grub_uint32_t *unicode_last_screen_position;

	    unicode_last_screen_position = unicode_command_help;

	    stringwidth = 0;

	    while (unicode_last_screen_position < unicode_last_position && 
		   stringwidth < ((grub_term_width (term) / 2) - 2))
	      {
		stringwidth
		  += grub_term_getcharwidth (term,
					     *unicode_last_screen_position);
		unicode_last_screen_position++;
	      }

	    grub_print_ucs4 (unicode_command_help,
			     unicode_last_screen_position, term);
	    if (!(cnt % 2))
	      grub_print_spaces (term, grub_term_width (term) / 2
				 - stringwidth);
	  }
	  if (cnt % 2)
	    grub_printf ("\n");
	  cnt++;
	  
	  grub_free (command_help);
	  grub_free (unicode_command_help);
	}
      return 0;
    }

  int print_command_help (grub_command_t cmd)
    {
      if (cmd->prio & GRUB_PRIO_LIST_FLAG_ACTIVE)
	{
	  if (! grub_strncmp (cmd->name, currarg, grub_strlen (currarg)))
	    {
	      if (cnt++ > 0)
		grub_printf ("\n\n");

	      if (cmd->flags & GRUB_COMMAND_FLAG_EXTCMD)
		grub_arg_show_help ((grub_extcmd_t) cmd->data);
	      else
		grub_printf ("%s %s %s\n%s\b", _("Usage:"), cmd->name, _(cmd->summary),
			     _(cmd->description));
	    }
	}
      return 0;
    }

  if (argc == 0)
    {
      grub_command_iterate (print_command_info);
      if (!(cnt % 2))
	grub_printf ("\n");
    }
  else
    {
      int i;

      for (i = 0; i < argc; i++)
	{
	  currarg = args[i];
	  grub_command_iterate (print_command_help);
	}
    }

  return 0;
}