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nuttx-apps/nshlib/nsh_command.c

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/****************************************************************************
* apps/nshlib/nsh_command.c
*
* Copyright (C) 2007-2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <string.h>
#ifdef CONFIG_NSH_BUILTIN_APPS
# include <nuttx/binfmt/builtin.h>
#endif
#if defined(CONFIG_SYSTEM_READLINE) && defined(CONFIG_READLINE_HAVE_EXTMATCH)
# include <apps/readline.h>
#endif
#include "nsh.h"
#include "nsh_console.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Help command summary layout */
#define MAX_CMDLEN 12
#define CMDS_PER_LINE 6
#define NUM_CMDS ((sizeof(g_cmdmap)/sizeof(struct cmdmap_s)) - 1)
#define NUM_CMD_ROWS ((NUM_CMDS + (CMDS_PER_LINE-1)) / CMDS_PER_LINE)
/****************************************************************************
* Private Types
****************************************************************************/
struct cmdmap_s
{
FAR const char *cmd; /* Name of the command */
nsh_cmd_t handler; /* Function that handles the command */
uint8_t minargs; /* Minimum number of arguments (including command) */
uint8_t maxargs; /* Maximum number of arguments (including command) */
FAR const char *usage; /* Usage instructions for 'help' command */
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_HELP
static int cmd_help(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif
#ifndef CONFIG_NSH_DISABLESCRIPT
static int cmd_true(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
static int cmd_false(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif
#ifndef CONFIG_NSH_DISABLE_EXIT
static int cmd_exit(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
#endif
static int cmd_unrecognized(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv);
/****************************************************************************
* Private Data
****************************************************************************/
static const struct cmdmap_s g_cmdmap[] =
{
#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_TEST)
{ "[", cmd_lbracket, 4, CONFIG_NSH_MAXARGUMENTS, "<expression> ]" },
#endif
#ifndef CONFIG_NSH_DISABLE_HELP
{ "?", cmd_help, 1, 1, NULL },
#endif
#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE) && !defined(CONFIG_NSH_DISABLE_ADDROUTE)
{ "addroute", cmd_addroute, 4, 4, "<target> <netmask> <router>" },
#endif
#if defined(CONFIG_NETUTILS_CODECS) && defined(CONFIG_CODECS_BASE64)
# ifndef CONFIG_NSH_DISABLE_BASE64DEC
{ "base64dec", cmd_base64decode, 2, 4, "[-w] [-f] <string or filepath>" },
# endif
# ifndef CONFIG_NSH_DISABLE_BASE64ENC
{ "base64enc", cmd_base64encode, 2, 4, "[-w] [-f] <string or filepath>" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_BASENAME
{ "basename", cmd_basename, 2, 3, "<path> [<suffix>]" },
#endif
#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_LOOPS)
{ "break", cmd_break, 1, 1, NULL },
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_NSH_DISABLE_CAT
{ "cat", cmd_cat, 2, CONFIG_NSH_MAXARGUMENTS, "<path> [<path> [<path> ...]]" },
# endif
#ifndef CONFIG_DISABLE_ENVIRON
# ifndef CONFIG_NSH_DISABLE_CD
{ "cd", cmd_cd, 1, 2, "[<dir-path>|-|~|..]" },
# endif
#endif
# ifndef CONFIG_NSH_DISABLE_CP
{ "cp", cmd_cp, 3, 3, "<source-path> <dest-path>" },
# endif
# ifndef CONFIG_NSH_DISABLE_CMP
{ "cmp", cmd_cmp, 3, 3, "<path1> <path2>" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_DIRNAME
{ "dirname", cmd_dirname, 2, 2, "<path>" },
#endif
#ifndef CONFIG_NSH_DISABLE_DATE
{ "date", cmd_date, 1, 3, "[-s \"MMM DD HH:MM:SS YYYY\"]" },
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_NSH_DISABLE_DD)
{ "dd", cmd_dd, 3, 6, "if=<infile> of=<outfile> [bs=<sectsize>] [count=<sectors>] [skip=<sectors>]" },
# endif
#if defined(CONFIG_NET) && defined(CONFIG_NET_ROUTE) && !defined(CONFIG_NSH_DISABLE_DELROUTE)
{ "delroute", cmd_delroute, 3, 3, "<target> <netmask>" },
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT) && \
defined(CONFIG_FS_READABLE) && !defined(CONFIG_NSH_DISABLE_DF)
#ifdef CONFIG_NSH_CMDOPT_DF_H
{ "df", cmd_df, 1, 2, "[-h]" },
#else
{ "df", cmd_df, 1, 1, NULL },
#endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_SYSLOG) && \
defined(CONFIG_RAMLOG_SYSLOG) && !defined(CONFIG_NSH_DISABLE_DMESG)
{ "dmesg", cmd_dmesg, 1, 1, NULL },
#endif
#ifndef CONFIG_NSH_DISABLE_ECHO
# ifndef CONFIG_DISABLE_ENVIRON
{ "echo", cmd_echo, 0, CONFIG_NSH_MAXARGUMENTS, "[<string|$name> [<string|$name>...]]" },
# else
{ "echo", cmd_echo, 0, CONFIG_NSH_MAXARGUMENTS, "[<string> [<string>...]]" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_EXEC
{ "exec", cmd_exec, 2, 3, "<hex-address>" },
#endif
#ifndef CONFIG_NSH_DISABLE_EXIT
{ "exit", cmd_exit, 1, 1, NULL },
#endif
#ifndef CONFIG_NSH_DISABLESCRIPT
{ "false", cmd_false, 1, 1, NULL },
#endif
#ifndef CONFIG_NSH_DISABLE_FREE
{ "free", cmd_free, 1, 1, NULL },
#endif
#if defined(CONFIG_NET_UDP) && CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_NSH_DISABLE_GET
{ "get", cmd_get, 4, 7, "[-b|-n] [-f <local-path>] -h <ip-address> <remote-path>" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_HELP
# ifdef CONFIG_NSH_HELP_TERSE
{ "help", cmd_help, 1, 2, "[<cmd>]" },
#else
{ "help", cmd_help, 1, 3, "[-v] [<cmd>]" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0
#ifndef CONFIG_NSH_DISABLE_HEXDUMP
#ifndef CONFIG_NSH_CMDOPT_HEXDUMP
{ "hexdump", cmd_hexdump, 2, 2, "<file or device>" },
#else
{ "hexdump", cmd_hexdump, 2, 4, "<file or device> [skip=<bytes>] [count=<bytes>]" },
#endif
#endif
#endif
#ifdef CONFIG_NET
# ifndef CONFIG_NSH_DISABLE_IFCONFIG
{ "ifconfig", cmd_ifconfig, 1, 11, "[nic-name [<ip-address>|dhcp]] [dr|gw|gateway <dr-address>] [netmask <net-mask>] [dns <dns-address>] [hw <hw-mac>]" },
# endif
# ifndef CONFIG_NSH_DISABLE_IFUPDOWN
{ "ifdown", cmd_ifdown, 2, 2, "<nic-name>" },
{ "ifup", cmd_ifup, 2, 2, "<nic-name>" },
# endif
#endif
#if defined(CONFIG_MODULE) && !defined(CONFIG_NSH_DISABLE_MODCMDS)
{ "insmod", cmd_insmod, 3, 3, "<file-path> <module-name>" },
#endif
#ifndef CONFIG_DISABLE_SIGNALS
# ifndef CONFIG_NSH_DISABLE_KILL
{ "kill", cmd_kill, 3, 3, "-<signal> <pid>" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT)
# if defined(CONFIG_DEV_LOOP) && !defined(CONFIG_NSH_DISABLE_LOSETUP)
{ "losetup", cmd_losetup, 3, 6, "[-d <dev-path>] | [[-o <offset>] [-r] <dev-path> <file-path>]" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_MOUNTPOINT)
# if defined(CONFIG_SMART_DEV_LOOP) && !defined(CONFIG_NSH_DISABLE_LOSMART)
{ "losmart", cmd_losmart, 2, 11, "[-d <dev-path>] | [[-m <minor>] [-o <offset>] [-e <erase-size>] [-s <sect-size>] [-r] <file-path>]" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_NSH_DISABLE_LS
{ "ls", cmd_ls, 1, 5, "[-lRs] <dir-path>" },
# endif
#endif
#if defined(CONFIG_MODULE) && !defined(CONFIG_NSH_DISABLE_MODCMDS)
#if defined(CONFIG_FS_PROCFS) && !defined(CONFIG_FS_PROCFS_EXCLUDE_MODULE)
{ "lsmod", cmd_lsmod, 1, 1, NULL },
#endif
#endif
#ifndef CONFIG_NSH_DISABLE_MB
{ "mb", cmd_mb, 2, 3, "<hex-address>[=<hex-value>][ <hex-byte-count>]" },
#endif
#if defined(CONFIG_NETUTILS_CODECS) && defined(CONFIG_CODECS_HASH_MD5)
# ifndef CONFIG_NSH_DISABLE_MD5
{ "md5", cmd_md5, 2, 3, "[-f] <string or filepath>" },
# endif
#endif
#ifdef NSH_HAVE_DIROPTS
# ifndef CONFIG_NSH_DISABLE_MKDIR
{ "mkdir", cmd_mkdir, 2, 2, "<path>" },
# endif
#endif
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_FAT)
# ifndef CONFIG_NSH_DISABLE_MKFATFS
{ "mkfatfs", cmd_mkfatfs, 2, 4, "[-F <fatsize>] <block-driver>" },
# endif
#endif
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_NSH_DISABLE_MKFIFO
{ "mkfifo", cmd_mkfifo, 2, 2, "<path>" },
# endif
#endif
#ifdef NSH_HAVE_WRITABLE_MOUNTPOINT
# ifndef CONFIG_NSH_DISABLE_MKRD
{ "mkrd", cmd_mkrd, 2, 6, "[-m <minor>] [-s <sector-size>] <nsectors>" },
# endif
#endif
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && \
defined(CONFIG_FS_SMARTFS) && defined(CONFIG_FSUTILS_MKSMARTFS)
# ifndef CONFIG_NSH_DISABLE_MKSMARTFS
# ifdef CONFIG_SMARTFS_MULTI_ROOT_DIRS
{ "mksmartfs", cmd_mksmartfs, 2, 5, "[-s sector-size] <path> [<num-root-directories>]" },
# else
{ "mksmartfs", cmd_mksmartfs, 2, 4, "[-s sector-size] <path>" },
# endif
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_MH
{ "mh", cmd_mh, 2, 3, "<hex-address>[=<hex-value>][ <hex-byte-count>]" },
#endif
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_READABLE)
# ifndef CONFIG_NSH_DISABLE_MOUNT
#if defined(CONFIG_BUILD_PROTECTED) || defined(CONFIG_BUILD_KERNEL)
{ "mount", cmd_mount, 5, 7, "-t <fstype> [-o <options>] [<block-device>] <mount-point>" },
# else
{ "mount", cmd_mount, 1, 7, "[-t <fstype> [-o <options>] [<block-device>] <mount-point>]" },
# endif
# endif
#endif
#ifdef NSH_HAVE_DIROPTS
# ifndef CONFIG_NSH_DISABLE_MV
{ "mv", cmd_mv, 3, 3, "<old-path> <new-path>" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_MW
{ "mw", cmd_mw, 2, 3, "<hex-address>[=<hex-value>][ <hex-byte-count>]" },
#endif
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && \
defined(CONFIG_NET) && defined(CONFIG_NFS)
# ifndef CONFIG_NSH_DISABLE_NFSMOUNT
{ "nfsmount", cmd_nfsmount, 4, 4, "<server-address> <mount-point> <remote-path>" },
# endif
#endif
#if defined(CONFIG_LIBC_NETDB) && defined(CONFIG_NETDB_DNSCLIENT) && \
!defined(CONFIG_NSH_DISABLE_NSLOOKUP)
{ "nslookup", cmd_nslookup, 2, 2, "<host-name>" },
#endif
#if defined(CONFIG_NET) && defined(CONFIG_NET_ICMP) && defined(CONFIG_NET_ICMP_PING) && !defined(CONFIG_DISABLE_SIGNALS)
# ifndef CONFIG_NSH_DISABLE_PING
{ "ping", cmd_ping, 2, 6, "[-c <count>] [-i <interval>] <ip-address>" },
# endif
#endif
#if defined(CONFIG_NET) && defined(CONFIG_NET_ICMPv6) && defined(CONFIG_NET_ICMPv6_PING) && !defined(CONFIG_DISABLE_SIGNALS)
# ifndef CONFIG_NSH_DISABLE_PING6
{ "ping6", cmd_ping6, 2, 6, "[-c <count>] [-i <interval>] <ip-address>" },
# endif
#endif
#if defined(CONFIG_BOARDCTL_POWEROFF) && !defined(CONFIG_NSH_DISABLE_POWEROFF)
{ "poweroff", cmd_poweroff, 1, 1, NULL },
#endif
#ifndef CONFIG_NSH_DISABLE_PS
{ "ps", cmd_ps, 1, 1, NULL },
#endif
#if defined(CONFIG_NET_UDP) && CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_NSH_DISABLE_PUT
{ "put", cmd_put, 4, 7, "[-b|-n] [-f <remote-path>] -h <ip-address> <local-path>" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && !defined(CONFIG_DISABLE_ENVIRON)
# ifndef CONFIG_NSH_DISABLE_PWD
{ "pwd", cmd_pwd, 1, 1, NULL },
# endif
#endif
#if defined(CONFIG_BOARDCTL_RESET) && !defined(CONFIG_NSH_DISABLE_REBOOT)
{ "reboot", cmd_reboot, 1, 1, NULL },
#endif
#ifdef NSH_HAVE_DIROPTS
# ifndef CONFIG_NSH_DISABLE_RM
{ "rm", cmd_rm, 2, 2, "<file-path>" },
# endif
#endif
#ifdef NSH_HAVE_DIROPTS
# ifndef CONFIG_NSH_DISABLE_RMDIR
{ "rmdir", cmd_rmdir, 2, 2, "<dir-path>" },
# endif
#endif
#if defined(CONFIG_MODULE) && !defined(CONFIG_NSH_DISABLE_MODCMDS)
{ "rmmod", cmd_rmmod, 2, 2, "<module-name>" },
#endif
#ifndef CONFIG_DISABLE_ENVIRON
# ifndef CONFIG_NSH_DISABLE_SET
{ "set", cmd_set, 3, 3, "<name> <value>" },
# endif
#endif
#if CONFIG_NFILE_DESCRIPTORS > 0 && CONFIG_NFILE_STREAMS > 0 && !defined(CONFIG_NSH_DISABLESCRIPT)
# ifndef CONFIG_NSH_DISABLE_SH
{ "sh", cmd_sh, 2, 2, "<script-path>" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_SHUTDOWN
#if defined(CONFIG_BOARDCTL_POWEROFF) && defined(CONFIG_BOARDCTL_RESET)
{ "shutdown", cmd_shutdown, 1, 2, "[--reboot]" },
#elif defined(CONFIG_BOARDCTL_POWEROFF)
{ "shutdown", cmd_shutdown, 1, 1, NULL },
#elif defined(CONFIG_BOARDCTL_RESET)
{ "shutdown", cmd_shutdown, 2, 2, "--reboot" },
#endif
#endif
#ifndef CONFIG_DISABLE_SIGNALS
# ifndef CONFIG_NSH_DISABLE_SLEEP
{ "sleep", cmd_sleep, 2, 2, "<sec>" },
# endif
#endif
#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_TEST)
{ "test", cmd_test, 3, CONFIG_NSH_MAXARGUMENTS, "<expression>" },
#endif
#ifndef CONFIG_NSH_DISABLESCRIPT
{ "true", cmd_true, 1, 1, NULL },
#endif
#ifndef CONFIG_NSH_DISABLE_UNAME
#ifdef CONFIG_NET
{ "uname", cmd_uname, 1, 7, "[-a | -imnoprsv]" },
#else
{ "uname", cmd_uname, 1, 7, "[-a | -imoprsv]" },
#endif
#endif
#if !defined(CONFIG_DISABLE_MOUNTPOINT) && CONFIG_NFILE_DESCRIPTORS > 0 && defined(CONFIG_FS_READABLE)
# ifndef CONFIG_NSH_DISABLE_UMOUNT
{ "umount", cmd_umount, 2, 2, "<dir-path>" },
# endif
#endif
#ifndef CONFIG_DISABLE_ENVIRON
# ifndef CONFIG_NSH_DISABLE_UNSET
{ "unset", cmd_unset, 2, 2, "<name>" },
# endif
#endif
#if defined(CONFIG_NETUTILS_CODECS) && defined(CONFIG_CODECS_URLCODE)
# ifndef CONFIG_NSH_DISABLE_URLDECODE
{ "urldecode", cmd_urldecode, 2, 3, "[-f] <string or filepath>" },
# endif
# ifndef CONFIG_NSH_DISABLE_URLENCODE
{ "urlencode", cmd_urlencode, 2, 3, "[-f] <string or filepath>" },
# endif
#endif
#ifndef CONFIG_DISABLE_SIGNALS
# ifndef CONFIG_NSH_DISABLE_USLEEP
{ "usleep", cmd_usleep, 2, 2, "<usec>" },
# endif
#endif
#if defined(CONFIG_NET_TCP) && CONFIG_NFILE_DESCRIPTORS > 0
# ifndef CONFIG_NSH_DISABLE_WGET
{ "wget", cmd_wget, 2, 4, "[-o <local-path>] <url>" },
# endif
#endif
#ifndef CONFIG_NSH_DISABLE_XD
{ "xd", cmd_xd, 3, 3, "<hex-address> <byte-count>" },
#endif
{ NULL, NULL, 1, 1, NULL }
};
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: help_cmdlist
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_HELP
static inline void help_cmdlist(FAR struct nsh_vtbl_s *vtbl)
{
unsigned int i;
unsigned int j;
unsigned int k;
/* Print the command name in NUM_CMD_ROWS rows with CMDS_PER_LINE commands
* on each line.
*/
for (i = 0; i < NUM_CMD_ROWS; i++)
{
nsh_output(vtbl, " ");
for (j = 0, k = i; j < CMDS_PER_LINE && k < NUM_CMDS; j++, k += NUM_CMD_ROWS)
{
#ifdef CONFIG_NOPRINTF_FIELDWIDTH
nsh_output(vtbl, "%s\t", g_cmdmap[k].cmd);
#else
nsh_output(vtbl, "%-12s", g_cmdmap[k].cmd);
#endif
}
nsh_output(vtbl, "\n");
}
}
#endif
/****************************************************************************
* Name: help_usage
****************************************************************************/
#if !defined(CONFIG_NSH_DISABLE_HELP) && !defined(CONFIG_NSH_HELP_TERSE)
static inline void help_usage(FAR struct nsh_vtbl_s *vtbl)
{
nsh_output(vtbl, "NSH command forms:\n");
#ifndef CONFIG_NSH_DISABLEBG
nsh_output(vtbl, " [nice [-d <niceness>>]] <cmd> [> <file>|>> <file>] [&]\n\n");
#else
nsh_output(vtbl, " <cmd> [> <file>|>> <file>]\n\n");
#endif
#ifndef CONFIG_NSH_DISABLESCRIPT
#ifndef CONFIG_NSH_DISABLE_ITEF
nsh_output(vtbl, "OR\n");
nsh_output(vtbl, " if <cmd>\n");
nsh_output(vtbl, " then\n");
nsh_output(vtbl, " [sequence of <cmd>]\n");
nsh_output(vtbl, " else\n");
nsh_output(vtbl, " [sequence of <cmd>]\n");
nsh_output(vtbl, " fi\n\n");
#endif
#ifndef CONFIG_NSH_DISABLE_LOOPS
nsh_output(vtbl, "OR\n");
nsh_output(vtbl, " while <cmd>\n");
nsh_output(vtbl, " do\n");
nsh_output(vtbl, " [sequence of <cmd>]\n");
nsh_output(vtbl, " done\n\n");
nsh_output(vtbl, "OR\n");
nsh_output(vtbl, " until <cmd>\n");
nsh_output(vtbl, " do\n");
nsh_output(vtbl, " [sequence of <cmd>]\n");
nsh_output(vtbl, " done\n\n");
#endif
#endif
}
#endif
/****************************************************************************
* Name: help_showcmd
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_HELP
static void help_showcmd(FAR struct nsh_vtbl_s *vtbl,
FAR const struct cmdmap_s *cmdmap)
{
if (cmdmap->usage)
{
nsh_output(vtbl, " %s %s\n", cmdmap->cmd, cmdmap->usage);
}
else
{
nsh_output(vtbl, " %s\n", cmdmap->cmd);
}
}
#endif
/****************************************************************************
* Name: help_cmd
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_HELP
static int help_cmd(FAR struct nsh_vtbl_s *vtbl, FAR const char *cmd)
{
FAR const struct cmdmap_s *cmdmap;
/* Find the command in the command table */
for (cmdmap = g_cmdmap; cmdmap->cmd; cmdmap++)
{
/* Is this the one we are looking for? */
if (strcmp(cmdmap->cmd, cmd) == 0)
{
/* Yes... show it */
nsh_output(vtbl, "%s usage:", cmd);
help_showcmd(vtbl, cmdmap);
return OK;
}
}
nsh_output(vtbl, g_fmtcmdnotfound, cmd);
return ERROR;
}
#endif
/****************************************************************************
* Name: help_allcmds
****************************************************************************/
#if !defined(CONFIG_NSH_DISABLE_HELP) && !defined(CONFIG_NSH_HELP_TERSE)
static inline void help_allcmds(FAR struct nsh_vtbl_s *vtbl)
{
FAR const struct cmdmap_s *cmdmap;
/* Show all of the commands in the command table */
for (cmdmap = g_cmdmap; cmdmap->cmd; cmdmap++)
{
help_showcmd(vtbl, cmdmap);
}
}
#endif
/****************************************************************************
* Name: help_builtins
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_HELP
static inline void help_builtins(FAR struct nsh_vtbl_s *vtbl)
{
#ifdef CONFIG_NSH_BUILTIN_APPS
FAR const char *name;
int i;
/* List the set of available built-in commands */
nsh_output(vtbl, "\nBuiltin Apps:\n");
for (i = 0; (name = builtin_getname(i)) != NULL; i++)
{
nsh_output(vtbl, " %s\n", name);
}
#endif
}
#endif
/****************************************************************************
* Name: cmd_help
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_HELP
static int cmd_help(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
FAR const char *cmd = NULL;
#ifndef CONFIG_NSH_HELP_TERSE
bool verbose = false;
int i;
#endif
/* The command may be followed by a verbose option */
#ifndef CONFIG_NSH_HELP_TERSE
i = 1;
if (argc > i)
{
if (strcmp(argv[i], "-v") == 0)
{
verbose = true;
i++;
}
}
/* The command line may end with a command name */
if (argc > i)
{
cmd = argv[i];
}
/* Show the generic usage if verbose is requested */
if (verbose)
{
help_usage(vtbl);
}
#else
if (argc > 1)
{
cmd = argv[1];
}
#endif
/* Are we showing help on a single command? */
if (cmd)
{
/* Yes.. show the single command */
help_cmd(vtbl, cmd);
}
else
{
/* In verbose mode, show detailed help for all commands */
#ifndef CONFIG_NSH_HELP_TERSE
if (verbose)
{
nsh_output(vtbl, "Where <cmd> is one of:\n");
help_allcmds(vtbl);
}
/* Otherwise, just show the list of command names */
else
#endif
{
help_cmd(vtbl, "help");
nsh_output(vtbl, "\n");
help_cmdlist(vtbl);
}
/* And show the list of built-in applications */
help_builtins(vtbl);
}
return OK;
}
#endif
/****************************************************************************
* Name: cmd_unrecognized
****************************************************************************/
static int cmd_unrecognized(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
nsh_output(vtbl, g_fmtcmdnotfound, argv[0]);
return ERROR;
}
/****************************************************************************
* Name: cmd_true
****************************************************************************/
#ifndef CONFIG_NSH_DISABLESCRIPT
static int cmd_true(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
return OK;
}
#endif
/****************************************************************************
* Name: cmd_false
****************************************************************************/
#ifndef CONFIG_NSH_DISABLESCRIPT
static int cmd_false(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
return ERROR;
}
#endif
/****************************************************************************
* Name: cmd_exit
****************************************************************************/
#ifndef CONFIG_NSH_DISABLE_EXIT
static int cmd_exit(FAR struct nsh_vtbl_s *vtbl, int argc, char **argv)
{
nsh_exit(vtbl, 0);
return OK;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nsh_command
*
* Description:
* Execute the command in argv[0]
*
* Returned Value:
* -1 (ERRROR) if the command was unsuccessful
* 0 (OK) if the command was successful
*
****************************************************************************/
int nsh_command(FAR struct nsh_vtbl_s *vtbl, int argc, char *argv[])
{
const struct cmdmap_s *cmdmap;
const char *cmd;
nsh_cmd_t handler = cmd_unrecognized;
int ret;
/* The form of argv is:
*
* argv[0]: The command name. This is argv[0] when the arguments
* are, finally, received by the command vtblr
* argv[1]: The beginning of argument (up to CONFIG_NSH_MAXARGUMENTS)
* argv[argc]: NULL terminating pointer
*/
cmd = argv[0];
/* See if the command is one that we understand */
for (cmdmap = g_cmdmap; cmdmap->cmd; cmdmap++)
{
if (strcmp(cmdmap->cmd, cmd) == 0)
{
/* Check if a valid number of arguments was provided. We
* do this simple, imperfect checking here so that it does
* not have to be performed in each command.
*/
if (argc < cmdmap->minargs)
{
/* Fewer than the minimum number were provided */
nsh_output(vtbl, g_fmtargrequired, cmd);
return ERROR;
}
else if (argc > cmdmap->maxargs)
{
/* More than the maximum number were provided */
nsh_output(vtbl, g_fmttoomanyargs, cmd);
return ERROR;
}
else
{
/* A valid number of arguments were provided (this does
* not mean they are right).
*/
handler = cmdmap->handler;
break;
}
}
}
ret = handler(vtbl, argc, argv);
return ret;
}
/****************************************************************************
* Name: nsh_extmatch_count
*
* Description:
* This support function is used to provide support for realine tab-
* completion logic nsh_extmatch_count() counts the number of matching
* nsh command names
*
* Input Parameters:
* name - A point to the name containing the name to be matched.
* matches - A table is size CONFIG_READLINE_MAX_EXTCMDS that can
* be used to remember matching name indices.
* namelen - The lenght of the name to match
*
* Returned Values:
* The number commands that match to the first namelen characters.
*
****************************************************************************/
#if defined(CONFIG_NSH_READLINE) && defined(CONFIG_READLINE_TABCOMPLETION) && \
defined(CONFIG_READLINE_HAVE_EXTMATCH)
int nsh_extmatch_count(FAR char *name, FAR int *matches, int namelen)
{
int nr_matches = 0;
int i;
for (i = 0; i < NUM_CMDS; i++)
{
if (strncmp(name, g_cmdmap[i].cmd, namelen) == 0)
{
matches[nr_matches] = i;
nr_matches++;
if (nr_matches >= CONFIG_READLINE_MAX_EXTCMDS)
{
break;
}
}
}
return nr_matches;
}
#endif
/****************************************************************************
* Name: nsh_extmatch_getname
*
* Description:
* This support function is used to provide support for realine tab-
* completion logic nsh_extmatch_getname() will return the full command
* string from an index that was previously saved by nsh_exmatch_count().
*
* Input Parameters:
* index - The index of the command name to be returned.
*
* Returned Values:
* The numb
*
****************************************************************************/
#if defined(CONFIG_NSH_READLINE) && defined(CONFIG_READLINE_TABCOMPLETION) && \
defined(CONFIG_READLINE_HAVE_EXTMATCH)
FAR const char *nsh_extmatch_getname(int index)
{
DEBUGASSERT(index > 0 && index <= NUM_CMDS);
return g_cmdmap[index].cmd;
}
#endif
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