| /* handler.c - commands to list or select handlers */ |
| /* |
| * 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/dl.h> |
| #include <grub/err.h> |
| #include <grub/misc.h> |
| #include <grub/term.h> |
| #include <grub/handler.h> |
| #include <grub/command.h> |
| |
| static grub_err_t |
| grub_cmd_handler (struct grub_command *cmd, |
| int argc, char **args) |
| { |
| char *class_name; |
| void *curr_item = 0; |
| grub_handler_class_t head; |
| |
| auto int list_item (grub_named_list_t item); |
| int list_item (grub_named_list_t item) |
| { |
| if (item == curr_item) |
| grub_putchar ('*'); |
| |
| grub_printf ("%s\n", item->name); |
| |
| return 0; |
| } |
| |
| class_name = (grub_strcmp (cmd->name, "handler")) ? (char *) cmd->name : 0; |
| |
| head = grub_handler_class_list; |
| if ((argc == 0) && (class_name == 0)) |
| { |
| grub_list_iterate (GRUB_AS_LIST (head), (grub_list_hook_t) list_item); |
| } |
| else |
| { |
| grub_handler_class_t class; |
| |
| if (class_name == 0) |
| { |
| class_name = args[0]; |
| argc--; |
| args++; |
| } |
| |
| class = grub_named_list_find (GRUB_AS_NAMED_LIST (head), class_name); |
| if (! class) |
| return grub_error (GRUB_ERR_FILE_NOT_FOUND, "class not found"); |
| |
| if (argc == 0) |
| { |
| curr_item = class->cur_handler; |
| grub_list_iterate (GRUB_AS_LIST (class->handler_list), |
| (grub_list_hook_t) list_item); |
| } |
| else |
| { |
| grub_handler_t handler; |
| |
| handler = |
| grub_named_list_find (GRUB_AS_NAMED_LIST (class->handler_list), |
| args[0]); |
| |
| if (! handler) |
| return grub_error (GRUB_ERR_FILE_NOT_FOUND, "handler not found"); |
| |
| grub_handler_set_current (class, handler); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static grub_command_t cmd_handler, cmd_terminal_input, cmd_terminal_output; |
| |
| GRUB_MOD_INIT(handler) |
| { |
| cmd_handler = |
| grub_register_command ("handler", grub_cmd_handler, |
| "handler [class [handler]]", |
| "List or select a handler"); |
| cmd_terminal_input = |
| grub_register_command ("terminal_input", grub_cmd_handler, |
| "terminal_input [handler]", |
| "List or select a handler"); |
| cmd_terminal_output = |
| grub_register_command ("terminal_output", grub_cmd_handler, |
| "terminal_output [handler]", |
| "List or select a handler"); |
| } |
| |
| GRUB_MOD_FINI(handler) |
| { |
| grub_unregister_command (cmd_handler); |
| grub_unregister_command (cmd_terminal_input); |
| grub_unregister_command (cmd_terminal_output); |
| } |