text: /* rescue_parser.c - rescue mode parser  */
  /*
   *  GRUB  --  GRand Unified Bootloader
   *  Copyright (C) 2009  Free Software Foundation, Inc.
   *
   *  GRUB 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 3 of the License, or
   *  (at your option) any later version.
   *
   *  GRUB 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 GRUB.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  #include <grub/types.h>
  #include <grub/mm.h>
  #include <grub/env.h>
  #include <grub/parser.h>
  #include <grub/misc.h>
  #include <grub/command.h>
  #include <grub/i18n.h>
  
  grub_err_t
  grub_rescue_parse_line (char *line,
  			grub_reader_getline_t getline, void *getline_data)
  {
    char *name;
    int n;
    grub_command_t cmd;
    char **args;
  
    if (grub_parser_split_cmdline (line, getline, getline_data, &n, &args)
        || n < 0)
      return grub_errno;
  
    if (n == 0)
      return GRUB_ERR_NONE;
  
    /* In case of an assignment set the environment accordingly
       instead of calling a function.  */
    if (n == 1 && grub_strchr (line, '='))
      {
        char *val = grub_strchr (args[0], '=');
        val[0] = 0;
        grub_env_set (args[0], val + 1);
        val[0] = '=';
        goto quit;
      }
  
    /* Get the command name.  */
    name = args[0];
  
    /* If nothing is specified, restart.  */
    if (*name == '\0')
      goto quit;
  
    cmd = grub_command_find (name);
    if (cmd)
      {
        (cmd->func) (cmd, n - 1, &args[1]);
      }
    else
      {
        grub_printf_ (N_("Unknown command `%s'.\n"), name);
        if (grub_command_find ("help"))
  	grub_printf ("Try `help' for usage\n");
      }
  
   quit:
    grub_free (args[0]);
    grub_free (args);
  
    return grub_errno;
  }
  