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int
do_assign(arg,gimme,arglast)
register ARG *arg;
int gimme;
int *arglast;
{
register STR **st = stack->ary_array;
STR **firstrelem = st + arglast[1] + 1;
STR **firstlelem = st + arglast[0] + 1;
STR **lastrelem = st + arglast[2];
STR **lastlelem = st + arglast[1];
register STR **relem;
register STR **lelem;
register STR *TARG;
register ARRAY *ary;
register int makelocal;
HASH *hash;
int i;
makelocal = (arg->arg_flags & AF_LOCAL) != 0;
localizing = makelocal;
delaymagic = DM_DELAY; /* catch simultaneous items */
/* If there's a common identifier on both sides we have to take
* special care that assigning the identifier on the left doesn't
* clobber a value on the right that's used later in the list.
*/
if (arg->arg_flags & AF_COMMON) {
for (relem = firstrelem; relem <= lastrelem; relem++) {
/*SUPPRESS 560*/
if (TARG = *relem)
*relem = str_mortal(TARG);
}
}
relem = firstrelem;
lelem = firstlelem;
ary = Null(ARRAY*);
hash = Null(HASH*);
while (lelem <= lastlelem) {
TARG = *lelem++;
if (TARG->str_state >= SS_HASH) {
if (TARG->str_state == SS_ARY) {
if (makelocal)
ary = saveary(TARG->str_u.str_stab);
else {
ary = stab_array(TARG->str_u.str_stab);
ary->ary_fill = -1;
}
i = 0;
while (relem <= lastrelem) { /* gobble up all the rest */
TARG = Str_new(28,0);
if (*relem)
str_sset(TARG,*relem);
*(relem++) = TARG;
(void)astore(ary,i++,TARG);
}
}
else if (TARG->str_state == SS_HASH) {
char *tmps;
STR *tmpstr;
int magic = 0;
STAB *tmpstab = TARG->str_u.str_stab;
if (makelocal)
hash = savehash(TARG->str_u.str_stab);
else {
hash = stab_hash(TARG->str_u.str_stab);
if (tmpstab == envstab) {
magic = 'E';
environ[0] = Nullch;
}
else if (tmpstab == sigstab) {
magic = 'S';
#ifndef NSIG
#define NSIG 32
#endif
for (i = 1; i < NSIG; i++)
signal(i, SIG_DFL); /* crunch, crunch, crunch */
}
#ifdef SOME_DBM
else if (hash->tbl_dbm)
magic = 'D';
#endif
hclear(hash, magic == 'D'); /* wipe any dbm file too */
}
while (relem < lastrelem) { /* gobble up all the rest */
if (*relem)
TARG = *(relem++);
else
TARG = &str_no, relem++;
tmps = str_get(TARG);
tmpstr = Str_new(29,0);
if (*relem)
str_sset(tmpstr,*relem); /* value */
*(relem++) = tmpstr;
(void)hstore(hash,tmps,TARG->str_cur,tmpstr,0);
if (magic) {
str_magic(tmpstr, tmpstab, magic, tmps, TARG->str_cur);
stabset(tmpstr->str_magic, tmpstr);
}
}
}
else
fatal("panic: do_assign");
}
else {
if (makelocal)
saveitem(TARG);
if (relem <= lastrelem) {
str_sset(TARG, *relem);
*(relem++) = TARG;
}
else {
str_sset(TARG, &str_undef);
if (gimme == G_ARRAY) {
i = ++lastrelem - firstrelem;
relem++; /* tacky, I suppose */
astore(stack,i,TARG);
if (st != stack->ary_array) {
st = stack->ary_array;
firstrelem = st + arglast[1] + 1;
firstlelem = st + arglast[0] + 1;
lastlelem = st + arglast[1];
lastrelem = st + i;
relem = lastrelem + 1;
}
}
}
STABSET(TARG);
}
}
if (delaymagic & ~DM_DELAY) {
if (delaymagic & DM_UID) {
#ifdef HAS_SETREUID
(void)setreuid(uid,euid);
#else /* not HAS_SETREUID */
#ifdef HAS_SETRUID
if ((delaymagic & DM_UID) == DM_RUID) {
(void)setruid(uid);
delaymagic =~ DM_RUID;
}
#endif /* HAS_SETRUID */
#ifdef HAS_SETEUID
if ((delaymagic & DM_UID) == DM_EUID) {
(void)seteuid(uid);
delaymagic =~ DM_EUID;
}
#endif /* HAS_SETEUID */
if (delaymagic & DM_UID) {
if (uid != euid)
fatal("No setreuid available");
(void)setuid(uid);
}
#endif /* not HAS_SETREUID */
uid = (int)getuid();
euid = (int)geteuid();
}
if (delaymagic & DM_GID) {
#ifdef HAS_SETREGID
(void)setregid(gid,egid);
#else /* not HAS_SETREGID */
#ifdef HAS_SETRGID
if ((delaymagic & DM_GID) == DM_RGID) {
(void)setrgid(gid);
delaymagic =~ DM_RGID;
}
#endif /* HAS_SETRGID */
#ifdef HAS_SETEGID
if ((delaymagic & DM_GID) == DM_EGID) {
(void)setegid(gid);
delaymagic =~ DM_EGID;
}
#endif /* HAS_SETEGID */
if (delaymagic & DM_GID) {
if (gid != egid)
fatal("No setregid available");
(void)setgid(gid);
}
#endif /* not HAS_SETREGID */
gid = (int)getgid();
egid = (int)getegid();
}
}
delaymagic = 0;
localizing = FALSE;
if (gimme == G_ARRAY) {
i = lastrelem - firstrelem + 1;
if (ary || hash)
Copy(firstrelem, firstlelem, i, STR*);
return arglast[0] + i;
}
else {
str_numset(ARGTARG,(double)(arglast[2] - arglast[1]));
*firstlelem = ARGTARG;
return arglast[0] + 1;
}
}
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