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apps/nshlib/nsh_parse.c: Run through nxstyle.

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Gregory Nutt 2020-05-17 16:07:36 -06:00 committed by Abdelatif Guettouche
parent 9b06b508f9
commit 60428baed6
1 changed files with 117 additions and 103 deletions
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220
nshlib/nsh_parse.c
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@ -1,36 +1,20 @@
/****************************************************************************
* apps/nshlib/nsh_parse.c
*
* Copyright (C) 2007-2013, 2014, 2017-2018 Gregory Nutt. All rights
* reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* http://www.apache.org/licenses/LICENSE-2.0
*
* 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.
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
@ -178,8 +162,8 @@ static void nsh_dequote(FAR char *cmdline);
# define nsh_dequote(c)
#endif
static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
FAR char **allocation, FAR int *isenvvar);
static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl,
FAR char *cmdline, FAR char **allocation, FAR int *isenvvar);
static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, char **saveptr,
FAR NSH_MEMLIST_TYPE *memlist, FAR int *isenvvar);
@ -244,7 +228,8 @@ static const char g_nullstring[] = "";
*/
#if CONFIG_VERSION_MAJOR != 0 || CONFIG_VERSION_MINOR != 0
const char g_nshgreeting[] = "\nNuttShell (NSH) NuttX-" CONFIG_VERSION_STRING "\n";
const char g_nshgreeting[] =
"\nNuttShell (NSH) NuttX-" CONFIG_VERSION_STRING "\n";
#else
const char g_nshgreeting[] = "\nNuttShell (NSH)\n";
#endif
@ -259,7 +244,8 @@ const char g_nshmotd[] = CONFIG_NSH_MOTD_STRING;
#ifdef CONFIG_NSH_LOGIN
#if defined(CONFIG_NSH_TELNET_LOGIN) && defined(CONFIG_NSH_TELNET)
const char g_telnetgreeting[] = "\nWelcome to NuttShell(NSH) Telnet Server...\n";
const char g_telnetgreeting[] =
"\nWelcome to NuttShell(NSH) Telnet Server...\n";
#endif
const char g_userprompt[] = "login: ";
const char g_passwordprompt[] = "password: ";
@ -462,7 +448,7 @@ static int nsh_saveresult(FAR struct nsh_vtbl_s *vtbl, bool result)
* status.
*/
else if (np->np_lpstate[np->np_lpndx].lp_state == NSH_LOOP_UNTIL)
else if (np->np_lpstate[np->np_lpndx].lp_state == NSH_LOOP_UNTIL)
{
np->np_fail = false;
np->np_lpstate[np->np_lpndx].lp_enable = (result != OK);
@ -506,15 +492,15 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
/* Does this command correspond to an application filename?
* nsh_fileapp() returns:
*
* -1 (ERROR) if the application task corresponding to 'argv[0]' could not
* be started (possibly because it does not exist).
* -1 (ERROR) if the application task corresponding to 'argv[0]' could
* not be started (possibly because it does not exist).
* 0 (OK) if the application task corresponding to 'argv[0]' was
* and successfully started. If CONFIG_SCHED_WAITPID is
* defined, this return value also indicates that the
* application returned successful status (EXIT_SUCCESS)
* 1 If CONFIG_SCHED_WAITPID is defined, then this return value
* indicates that the application task was spawned successfully
* but returned failure exit status.
* indicates that the application task was spawned
* successfully but returned failure exit status.
*
* Note the priority is not effected by nice-ness.
*/
@ -543,15 +529,15 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
/* Does this command correspond to a built-in command?
* nsh_builtin() returns:
*
* -1 (ERROR) if the application task corresponding to 'argv[0]' could not
* be started (possibly because it doesn not exist).
* -1 (ERROR) if the application task corresponding to 'argv[0]' could
* not be started (possibly because it doesn not exist).
* 0 (OK) if the application task corresponding to 'argv[0]' was
* and successfully started. If CONFIG_SCHED_WAITPID is
* defined, this return value also indicates that the
* application returned successful status (EXIT_SUCCESS)
* 1 If CONFIG_SCHED_WAITPID is defined, then this return value
* indicates that the application task was spawned successfully
* but returned failure exit status.
* indicates that the application task was spawned
* successfully but returned failure exit status.
*
* Note the priority if not effected by nice-ness.
*/
@ -648,7 +634,8 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
ret = sched_getparam(0, &param);
if (ret != 0)
{
nsh_error(vtbl, g_fmtcmdfailed, argv[0], "sched_getparm", NSH_ERRNO);
nsh_error(vtbl, g_fmtcmdfailed, argv[0], "sched_getparm",
NSH_ERRNO);
nsh_releaseargs(args);
nsh_release(bkgvtbl);
goto errout;
@ -685,12 +672,15 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
pthread_attr_setschedpolicy(&attr, SCHED_NSH);
pthread_attr_setschedparam(&attr, &param);
/* Execute the command as a separate thread at the appropriate priority */
/* Execute the command as a separate thread at the appropriate
* priority.
*/
ret = pthread_create(&thread, &attr, nsh_child, (pthread_addr_t)args);
if (ret != 0)
{
nsh_error(vtbl, g_fmtcmdfailed, argv[0], "pthread_create", NSH_ERRNO_OF(ret));
nsh_error(vtbl, g_fmtcmdfailed, argv[0], "pthread_create",
NSH_ERRNO_OF(ret));
nsh_releaseargs(args);
nsh_release(bkgvtbl);
goto errout;
@ -702,7 +692,8 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
pthread_detach(thread);
nsh_output(vtbl, "%s [%d:%d]\n", argv[0], thread, param.sched_priority);
nsh_output(vtbl, "%s [%d:%d]\n", argv[0], thread,
param.sched_priority);
}
else
#endif
@ -718,8 +709,8 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
}
#endif
/* Then execute the command in "foreground" -- i.e., while the user waits
* for the next prompt. nsh_command will return:
/* Then execute the command in "foreground" -- i.e., while the user
* waits for the next prompt. nsh_command will return:
*
* -1 (ERROR) if the command was unsuccessful
* 0 (OK) if the command was successful
@ -738,8 +729,8 @@ static int nsh_execute(FAR struct nsh_vtbl_s *vtbl,
}
#endif
/* Mark errors so that it is possible to test for non-zero return values
* in nsh scripts.
/* Mark errors so that it is possible to test for non-zero return
* values in nsh scripts.
*/
if (ret < 0)
@ -894,7 +885,9 @@ static FAR char *nsh_cmdparm(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
FAR char *argument;
int ret;
/* We cannot process the command argument if there is no allocation pointer */
/* We cannot process the command argument if there is no allocation
* pointer.
*/
if (!allocation)
{
@ -1021,7 +1014,8 @@ static FAR char *nsh_strchr(FAR const char *str, int ch)
****************************************************************************/
#ifdef NSH_HAVE_VARS
static FAR char *nsh_envexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *varname)
static FAR char *nsh_envexpand(FAR struct nsh_vtbl_s *vtbl,
FAR char *varname)
{
/* Check for built-in variables */
@ -1128,8 +1122,9 @@ static void nsh_dequote(FAR char *cmdline)
****************************************************************************/
#if defined(CONFIG_NSH_ARGCAT) && defined(HAVE_MEMLIST)
static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
FAR char **allocation, FAR int *isenvvar)
static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl,
FAR char *cmdline, FAR char **allocation,
FAR int *isenvvar)
{
FAR char *working = cmdline;
#ifdef CONFIG_NSH_QUOTE
@ -1194,12 +1189,12 @@ static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
if (argument)
{
/* Yes, then we probably need to add the last part of the argument
* beginning at the last working pointer to the concatenated
* argument.
/* Yes, then we probably need to add the last part of the
* argument beginning at the last working pointer to the
* concatenated argument.
*
* On failures to allocation memory, nsh_strcat will just return
* old value of argument
* On failures to allocation memory, nsh_strcat will just
* return old value of argument
*/
argument = nsh_strcat(vtbl, argument, working);
@ -1212,7 +1207,9 @@ static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
}
else
{
/* No.. just return the original string from the command line. */
/* No.. just return the original string from the command
* line.
*/
nsh_dequote(cmdline);
return cmdline;
@ -1221,7 +1218,9 @@ static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
else
#ifdef CONFIG_NSH_CMDPARMS
/* Check for a back-quoted command embedded within the argument string. */
/* Check for a back-quoted command embedded within the argument
* string.
*/
if (*ptr == '`')
{
@ -1347,7 +1346,7 @@ static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
if ((vtbl->np.np_flags & NSH_PFLAG_SILENT) == 0)
#endif
{
nsh_output(vtbl," %s=%s\n", ptr, envstr ? envstr :"(null)");
nsh_output(vtbl, " %s=%s\n", ptr, envstr ? envstr : "(null)");
}
/* Concatenate the result of the operation with the accumulated
@ -1375,8 +1374,9 @@ static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
}
#else
static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
FAR char **allocation, FAR int *isenvvar)
static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl,
FAR char *cmdline, FAR char **allocation,
FAR int *isenvvar)
{
FAR char *argument = (FAR char *)g_nullstring;
#ifdef CONFIG_NSH_QUOTE
@ -1451,8 +1451,10 @@ static FAR char *nsh_argexpand(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
* Name: nsh_argument
****************************************************************************/
static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, FAR char **saveptr,
FAR NSH_MEMLIST_TYPE *memlist, FAR int *isenvvar)
static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl,
FAR char **saveptr,
FAR NSH_MEMLIST_TYPE *memlist,
FAR int *isenvvar)
{
FAR char *pbegin = *saveptr;
FAR char *pend = NULL;
@ -1474,7 +1476,8 @@ static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, FAR char **saveptr,
pbegin++);
/* If we are at the end of the string with nothing but delimiters found,
* then return NULL, meaning that there are no further arguments on the line.
* then return NULL, meaning that there are no further arguments on the
* line.
*/
if (!*pbegin)
@ -1551,9 +1554,10 @@ static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, FAR char **saveptr,
/* Find the end of the string */
#ifdef CONFIG_NSH_CMDPARMS
/* Some special care must be exercised to make sure that we do not break up
* any back-quote delimited substrings. NOTE that the absence of a closing
* back-quote is not detected; That case should be detected later.
/* Some special care must be exercised to make sure that we do not
* break up any back-quote delimited substrings. NOTE that the
* absence of a closing back-quote is not detected; That case should
* be detected later.
*/
#ifdef CONFIG_NSH_QUOTE
@ -1645,7 +1649,6 @@ static FAR char *nsh_argument(FAR struct nsh_vtbl_s *vtbl, FAR char **saveptr,
if (prev != NULL && *prev == '\\' && !quoted)
{
/* Do no special checks on the quoted character */
quoted = true;
@ -1845,7 +1848,7 @@ static int nsh_loop(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
/* Check if we have exceeded the maximum depth of nesting */
if (np->np_lpndx >= CONFIG_NSH_NESTDEPTH-1)
if (np->np_lpndx >= CONFIG_NSH_NESTDEPTH - 1)
{
nsh_error(vtbl, g_fmtdeepnesting, cmd);
goto errout;
@ -1927,22 +1930,23 @@ static int nsh_loop(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
if (np->np_lpstate[np->np_lpndx].lp_enable)
{
/* Set the new file position to the top of the loop offset */
/* Set the new file position to the top of the loop offset */
ret = fseek(np->np_stream,
np->np_lpstate[np->np_lpndx].lp_topoffs,
SEEK_SET);
if (ret < 0)
ret = fseek(np->np_stream,
np->np_lpstate[np->np_lpndx].lp_topoffs,
SEEK_SET);
if (ret < 0)
{
nsh_error(vtbl, g_fmtcmdfailed, "done", "fseek", NSH_ERRNO);
nsh_error(vtbl, g_fmtcmdfailed, "done", "fseek",
NSH_ERRNO);
}
#ifndef NSH_DISABLE_SEMICOLON
/* Signal nsh_parse that we need to stop processing the
* current line and jump back to the top of the loop.
*/
/* Signal nsh_parse that we need to stop processing the
* current line and jump back to the top of the loop.
*/
np->np_jump = true;
np->np_jump = true;
#endif
}
else
@ -2038,7 +2042,7 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
/* Check if we have exceeded the maximum depth of nesting */
if (np->np_iendx >= CONFIG_NSH_NESTDEPTH-1)
if (np->np_iendx >= CONFIG_NSH_NESTDEPTH - 1)
{
nsh_error(vtbl, g_fmtdeepnesting, "if");
goto errout;
@ -2058,7 +2062,9 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
else if (strcmp(cmd, "then") == 0)
{
/* Get the cmd following the "then" -- there may or may not be one */
/* Get the cmd following the "then" -- there may or may not be
* one.
*/
*ppcmd = nsh_argument(vtbl, saveptr, memlist, NULL);
@ -2077,7 +2083,9 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
else if (strcmp(cmd, "else") == 0)
{
/* Get the cmd following the "else" -- there may or may not be one */
/* Get the cmd following the "else" -- there may or may not be
* one.
*/
*ppcmd = nsh_argument(vtbl, saveptr, memlist, NULL);
@ -2125,7 +2133,9 @@ static int nsh_itef(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
np->np_iendx--;
}
/* If we just parsed "if", then nothing is acceptable other than "then" */
/* If we just parsed "if", then nothing is acceptable other than
* "then".
*/
else if (np->np_iestate[np->np_iendx].ie_state == NSH_ITEF_IF)
{
@ -2185,6 +2195,7 @@ static int nsh_nice(FAR struct nsh_vtbl_s *vtbl, FAR char **ppcmd,
nsh_error(vtbl, g_fmtarginvalid, "nice");
return ERROR;
}
cmd = nsh_argument(vtbl, saveptr, memlist, NULL);
}
}
@ -2280,14 +2291,15 @@ static int nsh_parse_cmdparm(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
* of argv is:
*
* argv[0]: The command name.
* argv[1]: The beginning of argument (up to CONFIG_NSH_MAXARGUMENTS)
* argv[1]: The beginning of argument (up to
* CONFIG_NSH_MAXARGUMENTS)
* argv[argc]: NULL terminating pointer
*
* Maximum size is CONFIG_NSH_MAXARGUMENTS+1
*/
argv[0] = cmd;
for (argc = 1; argc < MAX_ARGV_ENTRIES-1; argc++)
for (argc = 1; argc < MAX_ARGV_ENTRIES - 1; argc++)
{
argv[argc] = nsh_argument(vtbl, &saveptr, &memlist, NULL);
if (!argv[argc])
@ -2307,7 +2319,8 @@ static int nsh_parse_cmdparm(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline,
/* Then execute the command */
ret = nsh_execute(vtbl, argc, argv, redirfile, O_WRONLY|O_CREAT|O_TRUNC);
ret = nsh_execute(vtbl, argc, argv, redirfile,
O_WRONLY | O_CREAT | O_TRUNC);
/* Restore the backgrounding and redirection state */
@ -2417,7 +2430,8 @@ static int nsh_parse_command(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline)
* of argv is:
*
* argv[0]: The command name.
* argv[1]: The beginning of argument (up to CONFIG_NSH_MAXARGUMENTS)
* argv[1]: The beginning of argument (up to
* CONFIG_NSH_MAXARGUMENTS)
* argv[argc-3]: Possibly '>' or '>>'
* argv[argc-2]: Possibly <file>
* argv[argc-1]: Possibly '&'
@ -2427,7 +2441,7 @@ static int nsh_parse_command(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline)
*/
argv[0] = cmd;
for (argc = 1; argc < MAX_ARGV_ENTRIES-1; argc++)
for (argc = 1; argc < MAX_ARGV_ENTRIES - 1; argc++)
{
int isenvvar = 0; /* flag for if an environment variable gets expanded */
@ -2440,7 +2454,7 @@ static int nsh_parse_command(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline)
if (isenvvar != 0)
{
while (argc < MAX_ARGV_ENTRIES-1)
while (argc < MAX_ARGV_ENTRIES - 1)
{
FAR char *pbegin = argv[argc];
@ -2493,10 +2507,10 @@ static int nsh_parse_command(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline)
/* Check if the command should run in background */
#ifndef CONFIG_NSH_DISABLEBG
if (argc > 1 && strcmp(argv[argc-1], "&") == 0)
if (argc > 1 && strcmp(argv[argc - 1], "&") == 0)
{
vtbl->np.np_bg = true;
argv[argc-1] = NULL;
argv[argc - 1] = NULL;
argc--;
}
#endif
@ -2508,23 +2522,23 @@ static int nsh_parse_command(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline)
{
/* Check for redirection to a new file */
if (strcmp(argv[argc-2], g_redirect1) == 0)
if (strcmp(argv[argc - 2], g_redirect1) == 0)
{
redirect_save = vtbl->np.np_redirect;
vtbl->np.np_redirect = true;
oflags = O_WRONLY|O_CREAT|O_TRUNC;
redirfile = nsh_getfullpath(vtbl, argv[argc-1]);
oflags = O_WRONLY | O_CREAT | O_TRUNC;
redirfile = nsh_getfullpath(vtbl, argv[argc - 1]);
argc -= 2;
}
/* Check for redirection by appending to an existing file */
else if (strcmp(argv[argc-2], g_redirect2) == 0)
else if (strcmp(argv[argc - 2], g_redirect2) == 0)
{
redirect_save = vtbl->np.np_redirect;
vtbl->np.np_redirect = true;
oflags = O_WRONLY|O_CREAT|O_APPEND;
redirfile = nsh_getfullpath(vtbl, argv[argc-1]);
oflags = O_WRONLY | O_CREAT | O_APPEND;
redirfile = nsh_getfullpath(vtbl, argv[argc - 1]);
argc -= 2;
}
}
@ -2586,15 +2600,15 @@ int nsh_parse(FAR struct nsh_vtbl_s *vtbl, FAR char *cmdline)
size_t len;
int ret;
/* Loop until all of the commands on the command line have been processed OR
* until the end-of-loop has been recountered and we need to reload the line
* at the top of the loop.
/* Loop until all of the commands on the command line have been processed
* OR until the end-of-loop has been encountered and we need to reload the
* line at the top of the loop.
*/
#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_LOOPS)
for (np->np_jump = false; !np->np_jump; )
#else
for (;;)
for (; ; )
#endif
{
#if !defined(CONFIG_NSH_DISABLESCRIPT) && !defined(CONFIG_NSH_DISABLE_LOOPS)