void update_stack_window(WINDOW **wins, struct user_regs_struct *regs,
struct user_regs_struct *old_regs,
void *stack_frame, void *old_stack_frame,
unsigned *hl)
{
if (old_regs->rsp == regs->rsp && old_stack_frame)
update_vars(regs, (long)stack_frame, (long)old_stack_frame, wins,
(unsigned *)hl);
if (old_regs->rbp != regs->rbp || !old_regs->rbp)
dump_new_frame(regs, old_regs, stack_frame, wins);
else if (old_regs->rsp != regs->rsp)
dump_new_vars(regs, old_regs, stack_frame, wins[WIN_STACK],
(unsigned *)hl);
}
/*ARGSUSED*/
void
shift(Char **v, struct command *c)
{
struct varent *argv;
Char *name;
USE(c);
v++;
name = *v;
if (name == 0)
name = STRargv;
else
(void) strip(name);
argv = adrof(name);
if (argv == NULL || argv->vec == NULL)
udvar(name);
if (argv->vec[0] == 0)
stderror(ERR_NAME | ERR_NOMORE);
lshift(argv->vec, 1);
update_vars(name);
}
/*ARGSUSED*/
void
dolet(Char **v, struct command *dummy)
{
Char *p;
Char *vp, c, op;
int hadsub;
int subscr;
USE(dummy);
v++;
p = *v++;
if (p == 0) {
prvars();
return;
}
do {
hadsub = 0;
vp = p;
if (letter(*p))
for (; alnum(*p); p++)
continue;
if (vp == p || !letter(*vp))
stderror(ERR_NAME | ERR_VARBEGIN);
if (*p == '[') {
hadsub++;
p = getinx(p, &subscr);
}
if (*p == 0 && *v)
p = *v++;
if ((op = *p) != 0)
*p++ = 0;
else
stderror(ERR_NAME | ERR_ASSIGN);
/*
* if there is no expression after the '=' then print a "Syntax Error"
* message - strike
*/
if (*p == '\0' && *v == NULL)
stderror(ERR_NAME | ERR_ASSIGN);
vp = Strsave(vp);
cleanup_push(vp, xfree);
if (op == '=') {
c = '=';
p = xset(p, &v);
}
else {
c = *p++;
if (any("+-", c)) {
if (c != op || *p)
stderror(ERR_NAME | ERR_UNKNOWNOP);
p = Strsave(STR1);
}
else {
if (any("<>", op)) {
if (c != op)
stderror(ERR_NAME | ERR_UNKNOWNOP);
stderror(ERR_NAME | ERR_SYNTAX);
}
if (c != '=')
stderror(ERR_NAME | ERR_UNKNOWNOP);
p = xset(p, &v);
}
}
cleanup_push(p, xfree);
if (op == '=') {
if (hadsub)
asx(vp, subscr, p);
else
setv(vp, p, VAR_READWRITE);
cleanup_ignore(p);
}
else if (hadsub) {
struct varent *gv = getvx(vp, subscr);
Char *val;
val = operate(op, gv->vec[subscr - 1], p);
cleanup_push(val, xfree);
asx(vp, subscr, val);
cleanup_ignore(val);
cleanup_until(val);
}
else {
Char *val;
val = operate(op, varval(vp), p);
cleanup_push(val, xfree);
setv(vp, val, VAR_READWRITE);
cleanup_ignore(val);
cleanup_until(val);
}
update_vars(vp);
cleanup_until(vp);
} while ((p = *v++) != NULL);
}
/*ARGSUSED*/
void
doset(Char **v, struct command *c)
{
Char *p;
Char *vp;
Char **vecp;
int hadsub;
int subscr;
int flags = VAR_READWRITE;
int first_match = 0;
int last_match = 0;
int changed = 0;
USE(c);
v++;
do {
changed = 0;
/*
* Readonly addition From: Tim P. Starrin <*****@*****.**>
*/
if (*v && eq(*v, STRmr)) {
flags = VAR_READONLY;
v++;
changed = 1;
}
if (*v && eq(*v, STRmf) && !last_match) {
first_match = 1;
v++;
changed = 1;
}
if (*v && eq(*v, STRml) && !first_match) {
last_match = 1;
v++;
changed = 1;
}
} while(changed);
p = *v++;
if (p == 0) {
plist(&shvhed, flags);
return;
}
do {
hadsub = 0;
vp = p;
if (!letter(*p))
stderror(ERR_NAME | ERR_VARBEGIN);
do {
p++;
} while (alnum(*p));
if (*p == '[') {
hadsub++;
p = getinx(p, &subscr);
}
if (*p != '\0' && *p != '=')
stderror(ERR_NAME | ERR_VARALNUM);
if (*p == '=') {
*p++ = '\0';
if (*p == '\0' && *v != NULL && **v == '(')
p = *v++;
}
else if (*v && eq(*v, STRequal)) {
if (*++v != NULL)
p = *v++;
}
if (eq(p, STRLparen)) {
Char **e = v;
if (hadsub)
stderror(ERR_NAME | ERR_SYNTAX);
for (;;) {
if (!*e)
stderror(ERR_NAME | ERR_MISSING, ')');
if (**e == ')')
break;
e++;
}
p = *e;
*e = 0;
vecp = saveblk(v);
if (first_match)
flags |= VAR_FIRST;
else if (last_match)
flags |= VAR_LAST;
set1(vp, vecp, &shvhed, flags);
*e = p;
v = e + 1;
}
else if (hadsub) {
Char *copy;
copy = Strsave(p);
cleanup_push(copy, xfree);
asx(vp, subscr, copy);
cleanup_ignore(copy);
cleanup_until(copy);
}
else
setv(vp, Strsave(p), flags);
update_vars(vp);
} while ((p = *v++) != NULL);
}
