2006-12-20 00:55:05 +01:00
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/*
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* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdint.h>
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#include <stdlib.h>
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2007-01-19 02:13:12 +01:00
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#include <stdio.h>
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2006-12-20 00:55:05 +01:00
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#include <readline/readline.h>
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#include <gpxe/command.h>
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#include <gpxe/shell.h>
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/** @file
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*
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* Minimal command shell
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*
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*/
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/** The shell prompt string */
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static const char shell_prompt[] = "gPXE> ";
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/** Flag set in order to exit shell */
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static int exit_flag = 0;
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/** "exit" command body */
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2006-12-20 01:44:16 +01:00
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static int exit_exec ( int argc, char **argv __unused ) {
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if ( argc == 1 ) {
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exit_flag = 1;
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} else {
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printf ( "Usage: exit\n"
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"Exits the command shell\n" );
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}
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2006-12-20 00:55:05 +01:00
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return 0;
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}
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/** "exit" command definition */
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struct command exit_command __command = {
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.name = "exit",
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.exec = exit_exec,
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};
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/** "help" command body */
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static int help_exec ( int argc __unused, char **argv __unused ) {
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struct command *command;
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2007-08-03 02:03:21 +02:00
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unsigned int hpos = 0;
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2006-12-20 00:55:05 +01:00
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printf ( "\nAvailable commands:\n\n" );
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2009-03-12 20:41:40 +01:00
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for_each_table_entry ( command, COMMANDS ) {
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2007-08-03 02:03:21 +02:00
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hpos += printf ( " %s", command->name );
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if ( hpos > ( 16 * 4 ) ) {
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printf ( "\n" );
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hpos = 0;
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} else {
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while ( hpos % 16 ) {
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printf ( " " );
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hpos++;
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}
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}
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2006-12-20 00:55:05 +01:00
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}
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2007-08-03 02:03:21 +02:00
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printf ( "\n\nType \"<command> --help\" for further information\n\n" );
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2006-12-20 00:55:05 +01:00
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return 0;
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}
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/** "help" command definition */
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struct command help_command __command = {
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.name = "help",
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.exec = help_exec,
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};
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/**
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* Start command shell
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*
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*/
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void shell ( void ) {
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char *line;
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exit_flag = 0;
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while ( ! exit_flag ) {
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line = readline ( shell_prompt );
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if ( line ) {
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system ( line );
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free ( line );
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}
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}
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}
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