bool menu_is_visible(struct menu *menu)
{
struct menu *child;
struct symbol *sym;
tristate visible;
if (!menu->prompt) {
return false;
}
sym = menu->sym;
if (sym) {
sym_calc_value(sym);
visible = menu->prompt->visible.tri;
} else {
visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
}
if (visible != no) {
return true;
}
if (!sym || sym_get_tristate_value(menu->sym) == no) {
return false;
}
for (child = menu->list; child; child = child->next)
if (menu_is_visible(child)) {
return true;
}
return false;
}
bool menu_is_visible(struct menu *menu)
{
struct menu *child;
struct symbol *sym;
tristate visible;
if (!menu->prompt)
return false;
sym = menu->sym;
if (sym) {
sym_calc_value(sym);
visible = menu->prompt->visible.tri;
} else
visible = menu->prompt->visible.tri = expr_calc_value(menu->prompt->visible.expr);
if (visible != no)
return true;
if (!sym || sym_get_tristate_value(menu->sym) == no)
return false;
for (child = menu->list; child; child = child->next) {
if (menu_is_visible(child)) {
if (sym)
sym->flags |= SYMBOL_DEF_USER;
return true;
}
}
return false;
}
struct property *sym_get_default_prop(struct symbol *sym)
{
struct property *prop;
for_all_defaults(sym, prop) {
prop->visible.tri = expr_calc_value(prop->visible.expr);
if (prop->visible.tri != no)
return prop;
}
tristate
expr_calc_value(struct expr * e)
{
tristate val1, val2;
const char *str1, *str2;
if (!e)
return yes;
switch (e->type) {
case E_SYMBOL:
sym_calc_value(e->left.sym);
return S_TRI(e->left.sym->curr);
case E_AND:
val1 = expr_calc_value(e->left.expr);
val2 = expr_calc_value(e->right.expr);
return E_AND(val1, val2);
case E_OR:
val1 = expr_calc_value(e->left.expr);
val2 = expr_calc_value(e->right.expr);
return E_OR(val1, val2);
case E_NOT:
val1 = expr_calc_value(e->left.expr);
return E_NOT(val1);
case E_EQUAL:
sym_calc_value(e->left.sym);
sym_calc_value(e->right.sym);
str1 = sym_get_string_value(e->left.sym);
str2 = sym_get_string_value(e->right.sym);
return !strcmp(str1, str2) ? yes : no;
case E_UNEQUAL:
sym_calc_value(e->left.sym);
sym_calc_value(e->right.sym);
str1 = sym_get_string_value(e->left.sym);
str2 = sym_get_string_value(e->right.sym);
return !strcmp(str1, str2) ? no : yes;
default:
printf("expr_calc_value: %d?\n", e->type);
return no;
}
}
int conf_read_simple(const char *name, int def, int sym_init)
{
FILE *in = NULL;
char line[1024];
char *p, *p2;
struct symbol *sym;
int i, def_flags;
if (name) {
in = zconf_fopen(name);
} else {
struct property *prop;
name = conf_get_configname();
in = zconf_fopen(name);
if (in)
goto load;
sym_add_change_count(1);
if (!sym_defconfig_list) {
if (modules_sym)
sym_calc_value(modules_sym);
return 1;
}
for_all_defaults(sym_defconfig_list, prop) {
if (expr_calc_value(prop->visible.expr) == no ||
prop->expr->type != E_SYMBOL)
continue;
name = conf_expand_value(prop->expr->left.sym->name);
in = zconf_fopen(name);
if (in) {
conf_message(_("using defaults found in %s"),
name);
goto load;
}
}
}
if (!in)
return 1;
load:
conf_filename = name;
conf_lineno = 0;
conf_warnings = 0;
conf_unsaved = 0;
def_flags = SYMBOL_DEF << def;
if (!sym_init)
goto readsym;
for_all_symbols(i, sym) {
sym->flags |= SYMBOL_CHANGED;
sym->flags &= ~(def_flags|SYMBOL_VALID);
if (sym_is_choice(sym))
sym->flags |= def_flags;
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
if (sym->def[def].val)
free(sym->def[def].val);
default:
sym->def[def].val = NULL;
sym->def[def].tri = no;
}
}
tristate expr_calc_value(struct expr *e)
{
tristate val1, val2;
const char *str1, *str2;
enum string_value_kind k1 = k_string, k2 = k_string;
union string_value lval = {}, rval = {};
int res;
if (!e)
return yes;
switch (e->type) {
case E_SYMBOL:
sym_calc_value(e->left.sym);
return e->left.sym->curr.tri;
case E_AND:
val1 = expr_calc_value(e->left.expr);
val2 = expr_calc_value(e->right.expr);
return EXPR_AND(val1, val2);
case E_OR:
val1 = expr_calc_value(e->left.expr);
val2 = expr_calc_value(e->right.expr);
return EXPR_OR(val1, val2);
case E_NOT:
val1 = expr_calc_value(e->left.expr);
return EXPR_NOT(val1);
case E_EQUAL:
case E_GEQ:
case E_GTH:
case E_LEQ:
case E_LTH:
case E_UNEQUAL:
break;
default:
printf("expr_calc_value: %d?\n", e->type);
return no;
}
sym_calc_value(e->left.sym);
sym_calc_value(e->right.sym);
str1 = sym_get_string_value(e->left.sym);
str2 = sym_get_string_value(e->right.sym);
if (e->left.sym->type != S_STRING || e->right.sym->type != S_STRING) {
k1 = expr_parse_string(str1, e->left.sym->type, &lval);
k2 = expr_parse_string(str2, e->right.sym->type, &rval);
}
if (k1 == k_string || k2 == k_string)
res = strcmp(str1, str2);
else if (k1 == k_invalid || k2 == k_invalid) {
if (e->type != E_EQUAL && e->type != E_UNEQUAL) {
printf("Cannot compare \"%s\" and \"%s\"\n", str1, str2);
return no;
}
res = strcmp(str1, str2);
} else if (k1 == k_unsigned || k2 == k_unsigned)
res = (lval.u > rval.u) - (lval.u < rval.u);
else /* if (k1 == k_signed && k2 == k_signed) */
res = (lval.s > rval.s) - (lval.s < rval.s);
switch(e->type) {
case E_EQUAL:
return res ? no : yes;
case E_GEQ:
return res >= 0 ? yes : no;
case E_GTH:
return res > 0 ? yes : no;
case E_LEQ:
return res <= 0 ? yes : no;
case E_LTH:
return res < 0 ? yes : no;
case E_UNEQUAL:
return res ? yes : no;
default:
printf("expr_calc_value: relation %d?\n", e->type);
return no;
}
}