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Minimal shell implementation using readline() and system().
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src/hci/shell.c
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86
src/hci/shell.c
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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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#include <console.h>
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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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static struct command commands[0] __table_start ( commands );
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static struct command commands_end[0] __table_end ( commands );
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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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static int exit_exec ( int argc __unused, char **argv __unused ) {
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exit_flag = 1;
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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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printf ( "\nAvailable commands:\n\n" );
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for ( command = commands ; command < commands_end ; command++ ) {
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printf ( " %s\n", command->name );
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}
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printf ( "\nType \"<command> --help\" for further information\n\n" );
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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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12
src/include/gpxe/shell.h
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src/include/gpxe/shell.h
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#ifndef _GPXE_SHELL_H
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#define _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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extern void shell ( void );
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#endif /* _GPXE_SHELL_H */
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