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/****************************************************************************
* examples/nsh/nsh.h
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
#ifndef __NSH_H
#define __HSH_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#ifdef CONFIG_EXAMPLES_NSH_CONSOLE
# include <stdio.h>
#endif
/****************************************************************************
* Definitions
****************************************************************************/
#if !defined(CONFIG_EXAMPLES_NSH_CONSOLE) && !defined(CONFIG_EXAMPLES_NSH_TELNET)
# error "No NSH front end defined"
#endif
/* This is the maximum number of arguments that will be accepted for a command */
#define NSH_MAX_ARGUMENTS 6
/* strerror() produces much nicer output but is, however, quite large and
* will only be used if CONFIG_EXAMPLES_NSH_STRERROR is defined.
*/
#ifdef CONFIG_EXAMPLES_NSH_STRERROR
# define NSH_ERRNO strerror(errno)
#else
# define NSH_ERRNO errno
#endif
/* Maximum size of one command line (telnet or serial) */
#ifndef CONFIG_EXAMPLES_NSH_LINELEN
# define CONFIG_EXAMPLES_NSH_LINELEN 80
#endif
/* The following two settings are used only in the telnetd interface */
#ifndef CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE
# define CONFIG_EXAMPLES_NSH_IOBUFFER_SIZE 512
#endif
/* As threads are created to handle each request, a stack must be allocated
* for the thread. Use a default if the user provided no stacksize.
*/
#ifndef CONFIG_EXAMPLES_NSH_STACKSIZE
# define CONFIG_EXAMPLES_NSH_STACKSIZE 4096
#endif
/* The maximum number of nested if-then[-else]-fi sequences that
* are permissable.
*/
#ifndef CONFIG_EXAMPLES_NSH_NESTDEPTH
# define CONFIG_EXAMPLES_NSH_NESTDEPTH 3
#endif
/* Define to enable dumping of all input/output buffers */
#undef CONFIG_EXAMPLES_NSH_TELNETD_DUMPBUFFER
#undef CONFIG_EXAMPLES_NSH_FULLPATH
#define nsh_clone(v) (v)->clone(v)
#define nsh_addref(v) (v)->addref(v)
#define nsh_release(v) (v)->release(v)
#define nsh_linebuffer(v) (v)->linebuffer(v)
#define nsh_redirect(v,f,s) (v)->redirect(v,f,s)
#define nsh_undirect(v,s) (v)->undirect(v,s)
#define nsh_exit(v) (v)->exit(v)
#ifdef CONFIG_CPP_HAVE_VARARGS
# define nsh_output(v, fmt...) (v)->output(v, ##fmt)
#else
# define nsh_output vtbl->output
#endif
#define SAVE_SIZE (sizeof(int) + sizeof(FILE*) + sizeof(boolean))
/****************************************************************************
* Public Types
****************************************************************************/
enum nsh_parser_e
{
NSH_PARSER_NORMAL = 0,
NSH_PARSER_IF,
NSH_PARSER_THEN,
NSH_PARSER_ELSE
};
struct nsh_state_s
{
ubyte ns_ifcond : 1; /* Value of command in 'if' statement */
ubyte ns_disabled : 1; /* TRUE: Unconditionally disabled */
ubyte ns_unused : 4;
ubyte ns_state : 2; /* Parser state (see enum nsh_parser_e) */
};
struct nsh_parser_s
{
boolean np_bg; /* TRUE: The last command executed in background */
boolean np_redirect; /* TRUE: Output from the last command was re-directed */
boolean np_fail; /* TRUE: The last command failed */
ubyte np_ndx; /* Current index into np_st[] */
int np_nice; /* "nice" value applied to last background cmd */
/* This is a stack of parser state information. It supports nested
* execution of commands that span multiple lines (like if-then-else-fi)
*/
struct nsh_state_s np_st[CONFIG_EXAMPLES_NSH_NESTDEPTH];
};
struct nsh_vtbl_s
{
/* This function pointers are "hooks" into the front end logic to
* handle things like output of command results, redirection, etc.
* -- all of which must be done in a way that is unique to the nature
* of the front end.
*/
FAR struct nsh_vtbl_s *(*clone)(FAR struct nsh_vtbl_s *vtbl);
void (*addref)(FAR struct nsh_vtbl_s *vtbl);
void (*release)(FAR struct nsh_vtbl_s *vtbl);
int (*output)(FAR struct nsh_vtbl_s *vtbl, const char *fmt, ...);
FAR char *(*linebuffer)(FAR struct nsh_vtbl_s *vtbl);
void (*redirect)(FAR struct nsh_vtbl_s *vtbl, int fd, FAR ubyte *save);
void (*undirect)(FAR struct nsh_vtbl_s *vtbl, FAR ubyte *save);
void (*exit)(FAR struct nsh_vtbl_s *vtbl);
/* Parser state data */
struct nsh_parser_s np;
};
typedef int (*cmd_t)(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
/****************************************************************************
* Public Data
****************************************************************************/
extern const char g_nshprompt[];
extern const char g_fmtargrequired[];
extern const char g_fmtarginvalid[];
extern const char g_fmtcmdnotfound[];
extern const char g_fmtcmdnotimpl[];
extern const char g_fmtnosuch[];
extern const char g_fmttoomanyargs[];
extern const char g_fmtdeepnesting[];
extern const char g_fmtcontext[];
extern const char g_fmtcmdfailed[];
extern const char g_fmtcmdoutofmemory[];
extern const char g_fmtinternalerror[];
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/* Message handler */
extern int nsh_parse(FAR struct nsh_vtbl_s *vtbl, char *cmdline);
/* I/O interfaces */
#ifdef CONFIG_EXAMPLES_NSH_CONSOLE
extern int nsh_consolemain(int argc, char *argv[]);
#endif
#ifdef CONFIG_EXAMPLES_NSH_TELNET
extern int nsh_telnetmain(int argc, char *argv[]);
#endif
/* Shell command handlers */
extern int cmd_echo(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_exec(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_ps(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#if CONFIG_NFILE_DESCRIPTORS > 0
extern int cmd_cat(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_cp(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_ls(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# if CONFIG_NFILE_STREAMS > 0
extern int cmd_sh(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif /* CONFIG_NFILE_STREAMS */
# ifndef CONFIG_DISABLE_MOUNTPOINT
extern int cmd_mkdir(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_mkfifo(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_rm(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_rmdir(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# ifdef CONFIG_FS_FAT
extern int cmd_mkfatfs(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_mount(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_umount(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
# endif /* CONFIG_FS_FAT */
# endif /* !CONFIG_DISABLE_MOUNTPOINT */
#endif /* CONFIG_NFILE_DESCRIPTORS */
#if defined(CONFIG_NET) && CONFIG_NSOCKET_DESCRIPTORS > 0
extern int cmd_ifconfig(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif
#ifndef CONFIG_DISABLE_ENVIRON
extern int cmd_set(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_unset(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif /* CONFIG_DISABLE_ENVIRON */
#ifndef CONFIG_DISABLE_SIGNALS
extern int cmd_sleep(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
extern int cmd_usleep(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif /* CONFIG_DISABLE_SIGNALS */
#endif /* __NSH_H */
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