void
set_editmode(const char *ed)
{
static const enum sh_flag edit_flags[] = {
#ifdef EMACS
FEMACS, FGMACS,
#endif
#ifdef VI
FVI,
#endif
};
char *rcp;
int i;
if ((rcp = strrchr(ed, '/')))
ed = ++rcp;
for (i = 0; i < NELEM(edit_flags); i++)
if (strstr(ed, options[(int) edit_flags[i]].name)) {
change_flag(edit_flags[i], OF_SPECIAL, 1);
return;
}
}
void
set_editmode(const char *ed)
{
static const enum sh_flag edit_flags[] = {
#ifdef EMACS
FEMACS, FGMACS,
#endif
#ifdef VI
FVI,
#endif
};
char *rcp;
unsigned int ele;
if ((rcp = strrchr(ed, '/')))
ed = ++rcp;
for (ele = 0; ele < NELEM(edit_flags); ele++)
if (strstr(ed, sh_options[(int) edit_flags[ele]].name)) {
change_flag(edit_flags[ele], OF_SPECIAL, 1);
return;
}
}
/* parse command line & set command arguments. returns the index of
* non-option arguments, -1 if there is an error.
*/
int
parse_args(char **argv,
int what, /* OF_CMDLINE or OF_SET */
int *setargsp)
{
static char cmd_opts[NELEM(options) + 3]; /* o:\0 */
static char set_opts[NELEM(options) + 5]; /* Ao;s\0 */
char *opts;
char *array = (char *) 0;
Getopt go;
int i, optc, set, sortargs = 0, arrayset = 0;
/* First call? Build option strings... */
if (cmd_opts[0] == '\0') {
char *p, *q;
/* see cmd_opts[] declaration */
strlcpy(cmd_opts, "o:", sizeof cmd_opts);
p = cmd_opts + strlen(cmd_opts);
/* see set_opts[] declaration */
strlcpy(set_opts, "A:o;s", sizeof set_opts);
q = set_opts + strlen(set_opts);
for (i = 0; i < NELEM(options); i++) {
if (options[i].c) {
if (options[i].flags & OF_CMDLINE)
*p++ = options[i].c;
if (options[i].flags & OF_SET)
*q++ = options[i].c;
}
}
*p = '\0';
*q = '\0';
}
if (what == OF_CMDLINE) {
opts = cmd_opts;
} else
opts = set_opts;
ksh_getopt_reset(&go, GF_ERROR|GF_PLUSOPT);
while ((optc = ksh_getopt(argv, &go, opts)) != -1) {
set = (go.info & GI_PLUS) ? 0 : 1;
switch (optc) {
case 'A':
arrayset = set ? 1 : -1;
array = go.optarg;
break;
case 'o':
if (go.optarg == (char *) 0) {
/* lone -o: print options
*
* Note that on the command line, -o requires
* an option (ie, can't get here if what is
* OF_CMDLINE).
*/
printoptions(set);
break;
}
i = option(go.optarg);
if (i >= 0 && set == Flag(i))
/* Don't check the context if the flag
* isn't changing - makes "set -o interactive"
* work if you're already interactive. Needed
* if the output of "set +o" is to be used.
*/
;
else if (i >= 0 && (options[i].flags & what))
change_flag((enum sh_flag) i, what, set);
else {
bi_errorf("%s: bad option", go.optarg);
return -1;
}
break;
case '?':
return -1;
default:
/* -s: sort positional params (at&t ksh stupidity) */
if (what == OF_SET && optc == 's') {
sortargs = 1;
break;
}
for (i = 0; i < NELEM(options); i++)
if (optc == options[i].c
&& (what & options[i].flags))
{
change_flag((enum sh_flag) i, what,
set);
break;
}
if (i == NELEM(options)) {
internal_errorf(1, "parse_args: `%c'", optc);
return -1; /* not reached */
}
}
}
if (!(go.info & GI_MINUSMINUS) && argv[go.optind] &&
(argv[go.optind][0] == '-' || argv[go.optind][0] == '+') &&
argv[go.optind][1] == '\0')
{
/* lone - clears -v and -x flags */
if (argv[go.optind][0] == '-' && !Flag(FPOSIX))
Flag(FVERBOSE) = Flag(FXTRACE) = 0;
/* set skips lone - or + option */
go.optind++;
}
if (setargsp)
/* -- means set $#/$* even if there are no arguments */
*setargsp = !arrayset && ((go.info & GI_MINUSMINUS) ||
argv[go.optind]);
if (arrayset && (!*array || *skip_varname(array, false))) {
bi_errorf("%s: is not an identifier", array);
return -1;
}
if (sortargs) {
for (i = go.optind; argv[i]; i++)
;
qsortp((void **) &argv[go.optind], (size_t) (i - go.optind),
xstrcmp);
}
if (arrayset) {
set_array(array, arrayset, argv + go.optind);
for (; argv[go.optind]; go.optind++)
;
}
return go.optind;
}
static int
main_init(int argc, const char *argv[], Source **sp, struct block **lp)
{
int argi, i;
Source *s = NULL;
struct block *l;
unsigned char restricted_shell, errexit, utf_flag;
char *cp;
const char *ccp, **wp;
struct tbl *vp;
struct stat s_stdin;
#if !defined(_PATH_DEFPATH) && defined(_CS_PATH)
ssize_t k;
#endif
#if defined(MKSH_EBCDIC) || defined(MKSH_FAUX_EBCDIC)
ebcdic_init();
#endif
set_ifs(TC_IFSWS);
#ifdef __OS2__
os2_init(&argc, &argv);
#endif
/* do things like getpgrp() et al. */
chvt_reinit();
/* make sure argv[] is sane, for weird OSes */
if (!*argv) {
argv = empty_argv;
argc = 1;
}
kshname = argv[0];
/* initialise permanent Area */
ainit(&aperm);
/* max. name length: -2147483648 = 11 (+ NUL) */
vtemp = alloc(offsetof(struct tbl, name[0]) + 12, APERM);
/* set up base environment */
env.type = E_NONE;
ainit(&env.area);
/* set up global l->vars and l->funs */
newblock();
/* Do this first so output routines (eg, errorf, shellf) can work */
initio();
/* determine the basename (without '-' or path) of the executable */
ccp = kshname;
goto begin_parsing_kshname;
while ((i = ccp[argi++])) {
if (mksh_cdirsep(i)) {
ccp += argi;
begin_parsing_kshname:
argi = 0;
if (*ccp == '-')
++ccp;
}
}
if (!*ccp)
ccp = empty_argv[0];
/*
* Turn on nohup by default. (AT&T ksh does not have a nohup
* option - it always sends the hup).
*/
Flag(FNOHUP) = 1;
/*
* Turn on brace expansion by default. AT&T kshs that have
* alternation always have it on.
*/
Flag(FBRACEEXPAND) = 1;
/*
* Turn on "set -x" inheritance by default.
*/
Flag(FXTRACEREC) = 1;
/* define built-in commands and see if we were called as one */
ktinit(APERM, &builtins,
/* currently up to 54 builtins: 75% of 128 = 2^7 */
7);
for (i = 0; mkshbuiltins[i].name != NULL; i++)
if (!strcmp(ccp, builtin(mkshbuiltins[i].name,
mkshbuiltins[i].func)))
Flag(FAS_BUILTIN) = 1;
if (!Flag(FAS_BUILTIN)) {
/* check for -T option early */
argi = parse_args(argv, OF_FIRSTTIME, NULL);
if (argi < 0)
return (1);
#if defined(MKSH_BINSHPOSIX) || defined(MKSH_BINSHREDUCED)
/* are we called as -sh or /bin/sh or so? */
if (!strcmp(ccp, "sh" MKSH_EXE_EXT)) {
/* either also turns off braceexpand */
#ifdef MKSH_BINSHPOSIX
/* enable better POSIX conformance */
change_flag(FPOSIX, OF_FIRSTTIME, true);
#endif
#ifdef MKSH_BINSHREDUCED
/* enable kludge/compat mode */
change_flag(FSH, OF_FIRSTTIME, true);
#endif
}
#endif
}
initvar();
inittraps();
coproc_init();
/* set up variable and command dictionaries */
ktinit(APERM, &taliases, 0);
ktinit(APERM, &aliases, 0);
#ifndef MKSH_NOPWNAM
ktinit(APERM, &homedirs, 0);
#endif
/* define shell keywords */
initkeywords();
init_histvec();
/* initialise tty size before importing environment */
change_winsz();
#ifdef _PATH_DEFPATH
def_path = _PATH_DEFPATH;
#else
#ifdef _CS_PATH
if ((k = confstr(_CS_PATH, NULL, 0)) > 0 &&
confstr(_CS_PATH, cp = alloc(k + 1, APERM), k + 1) == k + 1)
def_path = cp;
else
#endif
/*
* this is uniform across all OSes unless it
* breaks somewhere hard; don't try to optimise,
* e.g. add stuff for Interix or remove /usr
* for HURD, because e.g. Debian GNU/HURD is
* "keeping a regular /usr"; this is supposed
* to be a sane 'basic' default PATH
*/
def_path = MKSH_UNIXROOT "/bin" MKSH_PATHSEPS
MKSH_UNIXROOT "/usr/bin" MKSH_PATHSEPS
MKSH_UNIXROOT "/sbin" MKSH_PATHSEPS
MKSH_UNIXROOT "/usr/sbin";
#endif
/*
* Set PATH to def_path (will set the path global variable).
* (import of environment below will probably change this setting).
*/
vp = global(TPATH);
/* setstr can't fail here */
setstr(vp, def_path, KSH_RETURN_ERROR);
#ifndef MKSH_NO_CMDLINE_EDITING
/*
* Set edit mode to emacs by default, may be overridden
* by the environment or the user. Also, we want tab completion
* on in vi by default.
*/
change_flag(FEMACS, OF_SPECIAL, true);
#if !MKSH_S_NOVI
Flag(FVITABCOMPLETE) = 1;
#endif
#endif
/* import environment */
init_environ();
/* override default PATH regardless of environment */
#ifdef MKSH_DEFPATH_OVERRIDE
vp = global(TPATH);
setstr(vp, MKSH_DEFPATH_OVERRIDE, KSH_RETURN_ERROR);
#endif
/* for security */
typeset(TinitIFS, 0, 0, 0, 0);
/* assign default shell variable values */
typeset("PATHSEP=" MKSH_PATHSEPS, 0, 0, 0, 0);
substitute(initsubs, 0);
/* Figure out the current working directory and set $PWD */
vp = global(TPWD);
cp = str_val(vp);
/* Try to use existing $PWD if it is valid */
set_current_wd((mksh_abspath(cp) && test_eval(NULL, TO_FILEQ, cp,
Tdot, true)) ? cp : NULL);
if (current_wd[0])
simplify_path(current_wd);
/* Only set pwd if we know where we are or if it had a bogus value */
if (current_wd[0] || *cp)
/* setstr can't fail here */
setstr(vp, current_wd, KSH_RETURN_ERROR);
for (wp = initcoms; *wp != NULL; wp++) {
c_builtin(wp);
while (*wp != NULL)
wp++;
}
setint_n(global("OPTIND"), 1, 10);
kshuid = getuid();
kshgid = getgid();
kshegid = getegid();
safe_prompt = ksheuid ? "$ " : "# ";
vp = global("PS1");
/* Set PS1 if unset or we are root and prompt doesn't contain a # */
if (!(vp->flag & ISSET) ||
(!ksheuid && !strchr(str_val(vp), '#')))
/* setstr can't fail here */
setstr(vp, safe_prompt, KSH_RETURN_ERROR);
setint_n((vp = global("BASHPID")), 0, 10);
vp->flag |= INT_U;
setint_n((vp = global("PGRP")), (mksh_uari_t)kshpgrp, 10);
vp->flag |= INT_U;
setint_n((vp = global("PPID")), (mksh_uari_t)kshppid, 10);
vp->flag |= INT_U;
setint_n((vp = global("USER_ID")), (mksh_uari_t)ksheuid, 10);
vp->flag |= INT_U;
setint_n((vp = global("KSHUID")), (mksh_uari_t)kshuid, 10);
vp->flag |= INT_U;
setint_n((vp = global("KSHEGID")), (mksh_uari_t)kshegid, 10);
vp->flag |= INT_U;
setint_n((vp = global("KSHGID")), (mksh_uari_t)kshgid, 10);
vp->flag |= INT_U;
setint_n((vp = global("RANDOM")), rndsetup(), 10);
vp->flag |= INT_U;
setint_n((vp_pipest = global("PIPESTATUS")), 0, 10);
/* Set this before parsing arguments */
Flag(FPRIVILEGED) = (kshuid != ksheuid || kshgid != kshegid) ? 2 : 0;
/* this to note if monitor is set on command line (see below) */
#ifndef MKSH_UNEMPLOYED
Flag(FMONITOR) = 127;
#endif
/* this to note if utf-8 mode is set on command line (see below) */
UTFMODE = 2;
if (!Flag(FAS_BUILTIN)) {
argi = parse_args(argv, OF_CMDLINE, NULL);
if (argi < 0)
return (1);
}
/* process this later only, default to off (hysterical raisins) */
utf_flag = UTFMODE;
UTFMODE = 0;
if (Flag(FAS_BUILTIN)) {
/* auto-detect from environment variables, always */
utf_flag = 3;
} else if (Flag(FCOMMAND)) {
s = pushs(SSTRINGCMDLINE, ATEMP);
if (!(s->start = s->str = argv[argi++]))
errorf(Tf_optfoo, "", "", 'c', Treq_arg);
while (*s->str) {
if (ctype(*s->str, C_QUOTE))
break;
s->str++;
}
if (!*s->str)
s->flags |= SF_MAYEXEC;
s->str = s->start;
#ifdef MKSH_MIDNIGHTBSD01ASH_COMPAT
/* compatibility to MidnightBSD 0.1 /bin/sh (kludge) */
if (Flag(FSH) && argv[argi] && !strcmp(argv[argi], "--"))
++argi;
#endif
if (argv[argi])
kshname = argv[argi++];
} else if (argi < argc && !Flag(FSTDIN)) {
s = pushs(SFILE, ATEMP);
#ifdef __OS2__
/*
* A bug in OS/2 extproc (like shebang) handling makes
* it not pass the full pathname of a script, so we need
* to search for it. This changes the behaviour of a
* simple "mksh foo", but can't be helped.
*/
s->file = argv[argi++];
if (search_access(s->file, X_OK) != 0)
s->file = search_path(s->file, path, X_OK, NULL);
if (!s->file || !*s->file)
s->file = argv[argi - 1];
#else
s->file = argv[argi++];
#endif
s->u.shf = shf_open(s->file, O_RDONLY, 0,
SHF_MAPHI | SHF_CLEXEC);
if (s->u.shf == NULL) {
shl_stdout_ok = false;
warningf(true, Tf_sD_s, s->file, cstrerror(errno));
/* mandated by SUSv4 */
exstat = 127;
unwind(LERROR);
}
kshname = s->file;
} else {
Flag(FSTDIN) = 1;
s = pushs(SSTDIN, ATEMP);
s->file = "<stdin>";
s->u.shf = shf_fdopen(0, SHF_RD | can_seek(0),
NULL);
if (isatty(0) && isatty(2)) {
Flag(FTALKING) = Flag(FTALKING_I) = 1;
/* The following only if isatty(0) */
s->flags |= SF_TTY;
s->u.shf->flags |= SHF_INTERRUPT;
s->file = NULL;
}
}
/* this bizarreness is mandated by POSIX */
if (fstat(0, &s_stdin) >= 0 && S_ISCHR(s_stdin.st_mode) &&
Flag(FTALKING))
reset_nonblock(0);
/* initialise job control */
j_init();
/* do this after j_init() which calls tty_init_state() */
if (Flag(FTALKING)) {
if (utf_flag == 2) {
#ifndef MKSH_ASSUME_UTF8
/* auto-detect from locale or environment */
utf_flag = 4;
#else /* this may not be an #elif */
#if MKSH_ASSUME_UTF8
utf_flag = 1;
#else
/* always disable UTF-8 (for interactive) */
utf_flag = 0;
#endif
#endif
}
#ifndef MKSH_NO_CMDLINE_EDITING
x_init();
#endif
}
#ifdef SIGWINCH
sigtraps[SIGWINCH].flags |= TF_SHELL_USES;
setsig(&sigtraps[SIGWINCH], x_sigwinch,
SS_RESTORE_ORIG|SS_FORCE|SS_SHTRAP);
#endif
l = e->loc;
if (Flag(FAS_BUILTIN)) {
l->argc = argc;
l->argv = argv;
l->argv[0] = ccp;
} else {
l->argc = argc - argi;
/*
* allocate a new array because otherwise, when we modify
* it in-place, ps(1) output changes; the meaning of argc
* here is slightly different as it excludes kshname, and
* we add a trailing NULL sentinel as well
*/
l->argv = alloc2(l->argc + 2, sizeof(void *), APERM);
l->argv[0] = kshname;
memcpy(&l->argv[1], &argv[argi], l->argc * sizeof(void *));
l->argv[l->argc + 1] = NULL;
getopts_reset(1);
}
/* divine the initial state of the utf8-mode Flag */
ccp = null;
switch (utf_flag) {
/* auto-detect from locale or environment */
case 4:
#if HAVE_SETLOCALE_CTYPE
ccp = setlocale(LC_CTYPE, "");
#if HAVE_LANGINFO_CODESET
if (!isuc(ccp))
ccp = nl_langinfo(CODESET);
#endif
if (!isuc(ccp))
ccp = null;
#endif
/* FALLTHROUGH */
/* auto-detect from environment */
case 3:
/* these were imported from environ earlier */
if (ccp == null)
ccp = str_val(global("LC_ALL"));
if (ccp == null)
ccp = str_val(global("LC_CTYPE"));
if (ccp == null)
ccp = str_val(global("LANG"));
UTFMODE = isuc(ccp);
break;
/* not set on command line, not FTALKING */
case 2:
/* unknown values */
default:
utf_flag = 0;
/* FALLTHROUGH */
/* known values */
case 1:
case 0:
UTFMODE = utf_flag;
break;
}
/* Disable during .profile/ENV reading */
restricted_shell = Flag(FRESTRICTED);
Flag(FRESTRICTED) = 0;
errexit = Flag(FERREXIT);
Flag(FERREXIT) = 0;
/*
* Do this before profile/$ENV so that if it causes problems in them,
* user will know why things broke.
*/
if (!current_wd[0] && Flag(FTALKING))
warningf(false, "can't determine current directory");
if (Flag(FLOGIN))
include(MKSH_SYSTEM_PROFILE, 0, NULL, true);
if (!Flag(FPRIVILEGED)) {
if (Flag(FLOGIN))
include(substitute("$HOME/.profile", 0), 0, NULL, true);
if (Flag(FTALKING)) {
cp = substitute("${ENV:-" MKSHRC_PATH "}", DOTILDE);
if (cp[0] != '\0')
include(cp, 0, NULL, true);
}
} else {
include(MKSH_SUID_PROFILE, 0, NULL, true);
/* turn off -p if not set explicitly */
if (Flag(FPRIVILEGED) != 1)
change_flag(FPRIVILEGED, OF_INTERNAL, false);
}
if (restricted_shell) {
c_builtin(restr_com);
/* After typeset command... */
Flag(FRESTRICTED) = 1;
}
Flag(FERREXIT) = errexit;
if (Flag(FTALKING) && s)
hist_init(s);
else
/* set after ENV */
Flag(FTRACKALL) = 1;
alarm_init();
*sp = s;
*lp = l;
return (0);
}
/* Parse command line & set command arguments. Returns the index of
* non-option arguments, -1 if there is an error.
*/
int
parse_args(const char **argv,
int what, /* OF_CMDLINE or OF_SET */
bool *setargsp)
{
static char cmd_opts[NELEM(options) + 5]; /* o:T:\0 */
static char set_opts[NELEM(options) + 6]; /* A:o;s\0 */
char set, *opts;
const char *array = NULL;
Getopt go;
size_t i;
int optc, sortargs = 0, arrayset = 0;
/* First call? Build option strings... */
if (cmd_opts[0] == '\0') {
char *p = cmd_opts, *q = set_opts;
/* see cmd_opts[] declaration */
*p++ = 'o';
*p++ = ':';
#if !defined(MKSH_SMALL) || defined(TIOCSCTTY)
*p++ = 'T';
*p++ = ':';
#endif
/* see set_opts[] declaration */
*q++ = 'A';
*q++ = ':';
*q++ = 'o';
*q++ = ';';
*q++ = 's';
for (i = 0; i < NELEM(options); i++) {
if (options[i].c) {
if (options[i].flags & OF_CMDLINE)
*p++ = options[i].c;
if (options[i].flags & OF_SET)
*q++ = options[i].c;
}
}
*p = '\0';
*q = '\0';
}
if (what == OF_CMDLINE) {
const char *p = argv[0], *q;
/* Set FLOGIN before parsing options so user can clear
* flag using +l.
*/
if (*p != '-')
for (q = p; *q; )
if (*q++ == '/')
p = q;
Flag(FLOGIN) = (*p == '-');
opts = cmd_opts;
} else if (what == OF_FIRSTTIME) {
opts = cmd_opts;
} else
opts = set_opts;
ksh_getopt_reset(&go, GF_ERROR|GF_PLUSOPT);
while ((optc = ksh_getopt(argv, &go, opts)) != -1) {
set = (go.info & GI_PLUS) ? 0 : 1;
switch (optc) {
case 'A':
if (what == OF_FIRSTTIME)
break;
arrayset = set ? 1 : -1;
array = go.optarg;
break;
case 'o':
if (what == OF_FIRSTTIME)
break;
if (go.optarg == NULL) {
/* lone -o: print options
*
* Note that on the command line, -o requires
* an option (ie, can't get here if what is
* OF_CMDLINE).
*/
printoptions(set);
break;
}
i = option(go.optarg);
if ((enum sh_flag)i == FARC4RANDOM) {
warningf(true, "Do not use set ±o arc4random,"
" it will be removed in the next version"
" of mksh!");
return (0);
}
if ((i != (size_t)-1) && set == Flag(i))
/* Don't check the context if the flag
* isn't changing - makes "set -o interactive"
* work if you're already interactive. Needed
* if the output of "set +o" is to be used.
*/
;
else if ((i != (size_t)-1) && (options[i].flags & what))
change_flag((enum sh_flag)i, what, set);
else {
bi_errorf("%s: bad option", go.optarg);
return (-1);
}
break;
#if !defined(MKSH_SMALL) || defined(TIOCSCTTY)
case 'T':
if (what != OF_FIRSTTIME)
break;
#ifndef TIOCSCTTY
errorf("no TIOCSCTTY ioctl");
#else
change_flag(FTALKING, OF_CMDLINE, 1);
chvt(go.optarg);
break;
#endif
#endif
case '?':
return (-1);
default:
if (what == OF_FIRSTTIME)
break;
/* -s: sort positional params (AT&T ksh stupidity) */
if (what == OF_SET && optc == 's') {
sortargs = 1;
break;
}
for (i = 0; i < NELEM(options); i++)
if (optc == options[i].c &&
(what & options[i].flags)) {
change_flag((enum sh_flag)i, what, set);
break;
}
if (i == NELEM(options))
internal_errorf("parse_args: '%c'", optc);
}
}
if (!(go.info & GI_MINUSMINUS) && argv[go.optind] &&
(argv[go.optind][0] == '-' || argv[go.optind][0] == '+') &&
argv[go.optind][1] == '\0') {
/* lone - clears -v and -x flags */
if (argv[go.optind][0] == '-')
Flag(FVERBOSE) = Flag(FXTRACE) = 0;
/* set skips lone - or + option */
go.optind++;
}
if (setargsp)
/* -- means set $#/$* even if there are no arguments */
*setargsp = !arrayset && ((go.info & GI_MINUSMINUS) ||
argv[go.optind]);
if (arrayset && (!*array || *skip_varname(array, false))) {
bi_errorf("%s: is not an identifier", array);
return (-1);
}
if (sortargs) {
for (i = go.optind; argv[i]; i++)
;
qsort(&argv[go.optind], i - go.optind, sizeof(void *),
xstrcmp);
}
if (arrayset)
go.optind += set_array(array, arrayset > 0 ? true : false,
argv + go.optind);
return (go.optind);
}
/*
* Parse command line and set command arguments. Returns the index of
* non-option arguments, -1 if there is an error.
*/
int
parse_args(const char **argv,
/* OF_CMDLINE or OF_SET */
int what,
bool *setargsp)
{
static const char cmd_opts[] =
#define SHFLAGS_NOT_SET
#define SHFLAGS_OPTCS
#include "sh_flags.gen"
#undef SHFLAGS_NOT_SET
;
static const char set_opts[] =
#define SHFLAGS_NOT_CMD
#define SHFLAGS_OPTCS
#include "sh_flags.gen"
#undef SHFLAGS_NOT_CMD
;
bool set;
const char *opts;
const char *array = NULL;
Getopt go;
size_t i;
int optc, arrayset = 0;
bool sortargs = false;
bool fcompatseen = false;
if (what == OF_CMDLINE) {
const char *p = argv[0], *q;
/*
* Set FLOGIN before parsing options so user can clear
* flag using +l.
*/
if (*p != '-')
for (q = p; *q; )
if (*q++ == '/')
p = q;
Flag(FLOGIN) = (*p == '-');
opts = cmd_opts;
} else if (what == OF_FIRSTTIME) {
opts = cmd_opts;
} else
opts = set_opts;
ksh_getopt_reset(&go, GF_ERROR|GF_PLUSOPT);
while ((optc = ksh_getopt(argv, &go, opts)) != -1) {
set = tobool(!(go.info & GI_PLUS));
switch (optc) {
case 'A':
if (what == OF_FIRSTTIME)
break;
arrayset = set ? 1 : -1;
array = go.optarg;
break;
case 'o':
if (what == OF_FIRSTTIME)
break;
if (go.optarg == NULL) {
/*
* lone -o: print options
*
* Note that on the command line, -o requires
* an option (ie, can't get here if what is
* OF_CMDLINE).
*/
printoptions(set);
break;
}
i = option(go.optarg);
if ((i == FPOSIX || i == FSH) && set && !fcompatseen) {
/*
* If running 'set -o posix' or
* 'set -o sh', turn off the other;
* if running 'set -o posix -o sh'
* allow both to be set though.
*/
Flag(FPOSIX) = 0;
Flag(FSH) = 0;
fcompatseen = true;
}
if ((i != (size_t)-1) && (set ? 1U : 0U) == Flag(i))
/*
* Don't check the context if the flag
* isn't changing - makes "set -o interactive"
* work if you're already interactive. Needed
* if the output of "set +o" is to be used.
*/
;
else if ((i != (size_t)-1) && (OFF(i) & what))
change_flag((enum sh_flag)i, what, set);
else {
bi_errorf("%s: %s", go.optarg, "bad option");
return (-1);
}
break;
#ifdef KSH_CHVT_FLAG
case 'T':
if (what != OF_FIRSTTIME)
break;
#ifndef KSH_CHVT_CODE
errorf("no TIOCSCTTY ioctl");
#else
change_flag(FTALKING, OF_CMDLINE, true);
chvt(&go);
break;
#endif
#endif
case '?':
return (-1);
default:
if (what == OF_FIRSTTIME)
break;
/* -s: sort positional params (AT&T ksh stupidity) */
if (what == OF_SET && optc == 's') {
sortargs = true;
break;
}
for (i = 0; i < NELEM(options); i++)
if (optc == OFC(i) &&
(what & OFF(i))) {
change_flag((enum sh_flag)i, what, set);
break;
}
if (i == NELEM(options))
internal_errorf("parse_args: '%c'", optc);
}
}
if (!(go.info & GI_MINUSMINUS) && argv[go.optind] &&
(argv[go.optind][0] == '-' || argv[go.optind][0] == '+') &&
argv[go.optind][1] == '\0') {
/* lone - clears -v and -x flags */
if (argv[go.optind][0] == '-') {
Flag(FVERBOSE) = 0;
change_xtrace(0, false);
}
/* set skips lone - or + option */
go.optind++;
}
if (setargsp)
/* -- means set $#/$* even if there are no arguments */
*setargsp = !arrayset && ((go.info & GI_MINUSMINUS) ||
argv[go.optind]);
if (arrayset) {
const char *ccp = NULL;
if (*array)
ccp = skip_varname(array, false);
if (!ccp || !(!ccp[0] || (ccp[0] == '+' && !ccp[1]))) {
bi_errorf("%s: %s", array, "is not an identifier");
return (-1);
}
}
if (sortargs) {
for (i = go.optind; argv[i]; i++)
;
qsort(&argv[go.optind], i - go.optind, sizeof(void *),
xstrcmp);
}
if (arrayset)
go.optind += set_array(array, tobool(arrayset > 0),
argv + go.optind);
return (go.optind);
}
