diff options
Diffstat (limited to 'gpxe/src/hci/shell.c')
-rw-r--r-- | gpxe/src/hci/shell.c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/gpxe/src/hci/shell.c b/gpxe/src/hci/shell.c new file mode 100644 index 00000000..18b1068e --- /dev/null +++ b/gpxe/src/hci/shell.c @@ -0,0 +1,105 @@ +/* + * 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. + */ + +#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 + * + */ + +static struct command commands[0] + __table_start ( struct command, commands ); +static struct command commands_end[0] + __table_end ( struct command, commands ); + +/** 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 ( command = commands ; command < commands_end ; command++ ) { + 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 ); + } + } +} |