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/*
* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
*
* This program 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 2 of the
* License, or any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <readline/readline.h>
#include <gpxe/command.h>
#include <gpxe/shell.h>
/** @file
*
* Minimal command shell
*
*/
/** The shell prompt string */
static const char shell_prompt[] = "gPXE> ";
/** Flag set in order to exit shell */
static int exit_flag = 0;
/** "exit" command body */
static int exit_exec ( int argc, char **argv __unused ) {
if ( argc == 1 ) {
exit_flag = 1;
} else {
printf ( "Usage: exit\n"
"Exits the command shell\n" );
}
return 0;
}
/** "exit" command definition */
struct command exit_command __command = {
.name = "exit",
.exec = exit_exec,
};
/** "help" command body */
static int help_exec ( int argc __unused, char **argv __unused ) {
struct command *command;
unsigned int hpos = 0;
printf ( "\nAvailable commands:\n\n" );
for_each_table_entry ( command, COMMANDS ) {
hpos += printf ( " %s", command->name );
if ( hpos > ( 16 * 4 ) ) {
printf ( "\n" );
hpos = 0;
} else {
while ( hpos % 16 ) {
printf ( " " );
hpos++;
}
}
}
printf ( "\n\nType \"<command> --help\" for further information\n\n" );
return 0;
}
/** "help" command definition */
struct command help_command __command = {
.name = "help",
.exec = help_exec,
};
/**
* Start command shell
*
*/
void shell ( void ) {
char *line;
exit_flag = 0;
while ( ! exit_flag ) {
line = readline ( shell_prompt );
if ( line ) {
system ( line );
free ( line );
}
}
}
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