2 * Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * License, or any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 FILE_LICENCE ( GPL2_OR_LATER );
24 #include <readline/readline.h>
25 #include <gpxe/command.h>
26 #include <gpxe/shell.h>
30 * Minimal command shell
34 /** The shell prompt string */
35 static const char shell_prompt[] = "gPXE> ";
37 /** Flag set in order to exit shell */
38 static int exit_flag = 0;
40 /** "exit" command body */
41 static int exit_exec ( int argc, char **argv __unused ) {
46 printf ( "Usage: exit\n"
47 "Exits the command shell\n" );
53 /** "exit" command definition */
54 struct command exit_command __command = {
59 /** "help" command body */
60 static int help_exec ( int argc __unused, char **argv __unused ) {
61 struct command *command;
62 unsigned int hpos = 0;
64 printf ( "\nAvailable commands:\n\n" );
65 for_each_table_entry ( command, COMMANDS ) {
66 hpos += printf ( " %s", command->name );
67 if ( hpos > ( 16 * 4 ) ) {
77 printf ( "\n\nType \"<command> --help\" for further information\n\n" );
81 /** "help" command definition */
82 struct command help_command __command = {
95 while ( ! exit_flag ) {
96 line = readline ( shell_prompt );