arch/all-pc/boot/grub2-aros/grub-core/script/main.c

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2009  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include <grub/dl.h>
  20 #include <grub/i18n.h>
  21 #include <grub/parser.h>
  22 #include <grub/script_sh.h>
  23
  24 grub_err_t
  25 grub_normal_parse_line (char *line,
  26                         grub_reader_getline_t getline, void *getline_data)
  27 {
  28   struct grub_script *parsed_script;
  29
  30   /* Parse the script.  */
  31   parsed_script = grub_script_parse (line, getline, getline_data);
  32
  33   if (parsed_script)
  34     {
  35       /* Execute the command(s).  */
  36       grub_script_execute (parsed_script);
  37
  38       /* The parsed script was executed, throw it away.  */
  39       grub_script_unref (parsed_script);
  40     }
  41
  42   return grub_errno;
  43 }
  44
  45 static grub_command_t cmd_break;
  46 static grub_command_t cmd_continue;
  47 static grub_command_t cmd_shift;
  48 static grub_command_t cmd_setparams;
  49 static grub_command_t cmd_return;
  50
  51 void
  52 grub_script_init (void)
  53 {
  54   cmd_break = grub_register_command ("break", grub_script_break,
  55                                      N_("[NUM]"), N_("Exit from loops"));
  56   cmd_continue = grub_register_command ("continue", grub_script_break,
  57                                         N_("[NUM]"), N_("Continue loops"));
  58   cmd_shift = grub_register_command ("shift", grub_script_shift,
  59                                      N_("[NUM]"),
  60                                      /* TRANSLATORS: Positional arguments are
  61                                         arguments $0, $1, $2, ...  */
  62                                      N_("Shift positional parameters."));
  63   cmd_setparams = grub_register_command ("setparams", grub_script_setparams,
  64                                          N_("[VALUE]..."),
  65                                          N_("Set positional parameters."));
  66   cmd_return = grub_register_command ("return", grub_script_return,
  67                                       N_("[NUM]"),
  68                                       /* TRANSLATORS: It's a command description
  69                                          and "Return" is a verb, not a noun. The
  70                                          command in question is "return" and
  71                                          has exactly the same semanics as bash
  72                                          equivalent.  */
  73                                       N_("Return from a function."));
  74 }
  75
  76 void
  77 grub_script_fini (void)
  78 {
  79   if (cmd_break)
  80     grub_unregister_command (cmd_break);
  81   cmd_break = 0;
  82
  83   if (cmd_continue)
  84     grub_unregister_command (cmd_continue);
  85   cmd_continue = 0;
  86
  87   if (cmd_shift)
  88     grub_unregister_command (cmd_shift);
  89   cmd_shift = 0;
  90
  91   if (cmd_setparams)
  92     grub_unregister_command (cmd_setparams);
  93   cmd_setparams = 0;
  94
  95   if (cmd_return)
  96     grub_unregister_command (cmd_return);
  97   cmd_return = 0;
  98 }