GIF89a;
Mini Shell
Mini Shell
/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
* Released under the terms of the GNU GPL v2.0.
*/
#include <ctype.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include "lkc.h"
static const char nohelp_text[] = "There is no help available for this option.";
struct menu rootmenu;
static struct menu **last_entry_ptr;
struct file *file_list;
struct file *current_file;
void menu_warn(struct menu *menu, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s:%d:warning: ", menu->file->name, menu->lineno);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
}
static void prop_warn(struct property *prop, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s:%d:warning: ", prop->file->name, prop->lineno);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
}
void _menu_init(void)
{
current_entry = current_menu = &rootmenu;
last_entry_ptr = &rootmenu.list;
}
void menu_add_entry(struct symbol *sym)
{
struct menu *menu;
menu = xmalloc(sizeof(*menu));
memset(menu, 0, sizeof(*menu));
menu->sym = sym;
menu->parent = current_menu;
menu->file = current_file;
menu->lineno = zconf_lineno();
*last_entry_ptr = menu;
last_entry_ptr = &menu->next;
current_entry = menu;
if (sym)
menu_add_symbol(P_SYMBOL, sym, NULL);
}
void menu_end_entry(void)
{
}
struct menu *menu_add_menu(void)
{
menu_end_entry();
last_entry_ptr = ¤t_entry->list;
return current_menu = current_entry;
}
void menu_end_menu(void)
{
last_entry_ptr = ¤t_menu->next;
current_menu = current_menu->parent;
}
static struct expr *menu_check_dep(struct expr *e)
{
if (!e)
return e;
switch (e->type) {
case E_NOT:
e->left.expr = menu_check_dep(e->left.expr);
break;
case E_OR:
case E_AND:
e->left.expr = menu_check_dep(e->left.expr);
e->right.expr = menu_check_dep(e->right.expr);
break;
case E_SYMBOL:
/* change 'm' into 'm' && MODULES */
if (e->left.sym == &symbol_mod)
return expr_alloc_and(e, expr_alloc_symbol(modules_sym));
break;
default:
break;
}
return e;
}
void menu_add_dep(struct expr *dep)
{
current_entry->dep = expr_alloc_and(current_entry->dep, menu_check_dep(dep));
}
void menu_set_type(int type)
{
struct symbol *sym = current_entry->sym;
if (sym->type == type)
return;
if (sym->type == S_UNKNOWN) {
sym->type = type;
return;
}
menu_warn(current_entry, "type of '%s' redefined from '%s' to '%s'",
sym->name ? sym->name : "<choice>",
sym_type_name(sym->type), sym_type_name(type));
}
struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep)
{
struct property *prop = prop_alloc(type, current_entry->sym);
prop->menu = current_entry;
prop->expr = expr;
prop->visible.expr = menu_check_dep(dep);
if (prompt) {
if (isspace(*prompt)) {
prop_warn(prop, "leading whitespace ignored");
while (isspace(*prompt))
prompt++;
}
if (current_entry->prompt && current_entry != &rootmenu)
prop_warn(prop, "prompt redefined");
/* Apply all upper menus' visibilities to actual prompts. */
if(type == P_PROMPT) {
struct menu *menu = current_entry;
while ((menu = menu->parent) != NULL) {
struct expr *dup_expr;
if (!menu->visibility)
continue;
/*
* Do not add a reference to the
* menu's visibility expression but
* use a copy of it. Otherwise the
* expression reduction functions
* will modify expressions that have
* multiple references which can
* cause unwanted side effects.
*/
dup_expr = expr_copy(menu->visibility);
prop->visible.expr
= expr_alloc_and(prop->visible.expr,
dup_expr);
}
}
current_entry->prompt = prop;
}
prop->text = prompt;
return prop;
}
struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep)
{
return menu_add_prop(type, prompt, NULL, dep);
}
void menu_add_visibility(struct expr *expr)
{
current_entry->visibility = expr_alloc_and(current_entry->visibility,
expr);
}
void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep)
{
menu_add_prop(type, NULL, expr, dep);
}
void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep)
{
menu_add_prop(type, NULL, expr_alloc_symbol(sym), dep);
}
void menu_add_option(int token, char *arg)
{
switch (token) {
case T_OPT_MODULES:
modules_sym = current_entry->sym;
break;
case T_OPT_DEFCONFIG_LIST:
if (!sym_defconfig_list)
sym_defconfig_list = current_entry->sym;
else if (sym_defconfig_list != current_entry->sym)
zconf_error("trying to redefine defconfig symbol");
break;
case T_OPT_ENV:
prop_add_env(arg);
break;
case T_OPT_ALLNOCONFIG_Y:
current_entry->sym->flags |= SYMBOL_ALLNOCONFIG_Y;
break;
}
}
static int menu_validate_number(struct symbol *sym, struct symbol *sym2)
{
return sym2->type == S_INT || sym2->type == S_HEX ||
(sym2->type == S_UNKNOWN && sym_string_valid(sym, sym2->name));
}
static void sym_check_prop(struct symbol *sym)
{
struct property *prop;
struct symbol *sym2;
char *use;
for (prop = sym->prop; prop; prop = prop->next) {
switch (prop->type) {
case P_DEFAULT:
if ((sym->type == S_STRING || sym->type == S_INT || sym->type == S_HEX) &&
prop->expr->type != E_SYMBOL)
prop_warn(prop,
"default for config symbol '%s'"
" must be a single symbol", sym->name);
if (prop->expr->type != E_SYMBOL)
break;
sym2 = prop_get_symbol(prop);
if (sym->type == S_HEX || sym->type == S_INT) {
if (!menu_validate_number(sym, sym2))
prop_warn(prop,
"'%s': number is invalid",
sym->name);
}
break;
case P_SELECT:
case P_IMPLY:
use = prop->type == P_SELECT ? "select" : "imply";
sym2 = prop_get_symbol(prop);
if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
prop_warn(prop,
"config symbol '%s' uses %s, but is "
"not boolean or tristate", sym->name, use);
else if (sym2->type != S_UNKNOWN &&
sym2->type != S_BOOLEAN &&
sym2->type != S_TRISTATE)
prop_warn(prop,
"'%s' has wrong type. '%s' only "
"accept arguments of boolean and "
"tristate type", sym2->name, use);
break;
case P_RANGE:
if (sym->type != S_INT && sym->type != S_HEX)
prop_warn(prop, "range is only allowed "
"for int or hex symbols");
if (!menu_validate_number(sym, prop->expr->left.sym) ||
!menu_validate_number(sym, prop->expr->right.sym))
prop_warn(prop, "range is invalid");
break;
default:
;
}
}
}
void menu_finalize(struct menu *parent)
{
struct menu *menu, *last_menu;
struct symbol *sym;
struct property *prop;
struct expr *parentdep, *basedep, *dep, *dep2, **ep;
sym = parent->sym;
if (parent->list) {
if (sym && sym_is_choice(sym)) {
if (sym->type == S_UNKNOWN) {
/* find the first choice value to find out choice type */
current_entry = parent;
for (menu = parent->list; menu; menu = menu->next) {
if (menu->sym && menu->sym->type != S_UNKNOWN) {
menu_set_type(menu->sym->type);
break;
}
}
}
/* set the type of the remaining choice values */
for (menu = parent->list; menu; menu = menu->next) {
current_entry = menu;
if (menu->sym && menu->sym->type == S_UNKNOWN)
menu_set_type(sym->type);
}
parentdep = expr_alloc_symbol(sym);
} else if (parent->prompt)
parentdep = parent->prompt->visible.expr;
else
parentdep = parent->dep;
for (menu = parent->list; menu; menu = menu->next) {
basedep = expr_transform(menu->dep);
basedep = expr_alloc_and(expr_copy(parentdep), basedep);
basedep = expr_eliminate_dups(basedep);
menu->dep = basedep;
if (menu->sym)
prop = menu->sym->prop;
else
prop = menu->prompt;
for (; prop; prop = prop->next) {
if (prop->menu != menu)
continue;
dep = expr_transform(prop->visible.expr);
dep = expr_alloc_and(expr_copy(basedep), dep);
dep = expr_eliminate_dups(dep);
if (menu->sym && menu->sym->type != S_TRISTATE)
dep = expr_trans_bool(dep);
prop->visible.expr = dep;
if (prop->type == P_SELECT) {
struct symbol *es = prop_get_symbol(prop);
es->rev_dep.expr = expr_alloc_or(es->rev_dep.expr,
expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
} else if (prop->type == P_IMPLY) {
struct symbol *es = prop_get_symbol(prop);
es->implied.expr = expr_alloc_or(es->implied.expr,
expr_alloc_and(expr_alloc_symbol(menu->sym), expr_copy(dep)));
}
}
}
for (menu = parent->list; menu; menu = menu->next)
menu_finalize(menu);
} else if (sym) {
basedep = parent->prompt ? parent->prompt->visible.expr : NULL;
basedep = expr_trans_compare(basedep, E_UNEQUAL, &symbol_no);
basedep = expr_eliminate_dups(expr_transform(basedep));
last_menu = NULL;
for (menu = parent->next; menu; menu = menu->next) {
dep = menu->prompt ? menu->prompt->visible.expr : menu->dep;
if (!expr_contains_symbol(dep, sym))
break;
if (expr_depends_symbol(dep, sym))
goto next;
dep = expr_trans_compare(dep, E_UNEQUAL, &symbol_no);
dep = expr_eliminate_dups(expr_transform(dep));
dep2 = expr_copy(basedep);
expr_eliminate_eq(&dep, &dep2);
expr_free(dep);
if (!expr_is_yes(dep2)) {
expr_free(dep2);
break;
}
expr_free(dep2);
next:
menu_finalize(menu);
menu->parent = parent;
last_menu = menu;
}
if (last_menu) {
parent->list = parent->next;
parent->next = last_menu->next;
last_menu->next = NULL;
}
sym->dir_dep.expr = expr_alloc_or(sym->dir_dep.expr, parent->dep);
}
for (menu = parent->list; menu; menu = menu->next) {
if (sym && sym_is_choice(sym) &&
menu->sym && !sym_is_choice_value(menu->sym)) {
current_entry = menu;
menu->sym->flags |= SYMBOL_CHOICEVAL;
if (!menu->prompt)
menu_warn(menu, "choice value must have a prompt");
for (prop = menu->sym->prop; prop; prop = prop->next) {
if (prop->type == P_DEFAULT)
prop_warn(prop, "defaults for choice "
"values not supported");
if (prop->menu == menu)
continue;
if (prop->type == P_PROMPT &&
prop->menu->parent->sym != sym)
prop_warn(prop, "choice value used outside its choice group");
}
/* Non-tristate choice values of tristate choices must
* depend on the choice being set to Y. The choice
* values' dependencies were propagated to their
* properties above, so the change here must be re-
* propagated.
*/
if (sym->type == S_TRISTATE && menu->sym->type != S_TRISTATE) {
basedep = expr_alloc_comp(E_EQUAL, sym, &symbol_yes);
menu->dep = expr_alloc_and(basedep, menu->dep);
for (prop = menu->sym->prop; prop; prop = prop->next) {
if (prop->menu != menu)
continue;
prop->visible.expr = expr_alloc_and(expr_copy(basedep),
prop->visible.expr);
}
}
menu_add_symbol(P_CHOICE, sym, NULL);
prop = sym_get_choice_prop(sym);
for (ep = &prop->expr; *ep; ep = &(*ep)->left.expr)
;
*ep = expr_alloc_one(E_LIST, NULL);
(*ep)->right.sym = menu->sym;
}
if (menu->list && (!menu->prompt || !menu->prompt->text)) {
for (last_menu = menu->list; ; last_menu = last_menu->next) {
last_menu->parent = parent;
if (!last_menu->next)
break;
}
last_menu->next = menu->next;
menu->next = menu->list;
menu->list = NULL;
}
}
if (sym && !(sym->flags & SYMBOL_WARNED)) {
if (sym->type == S_UNKNOWN)
menu_warn(parent, "config symbol defined without type");
if (sym_is_choice(sym) && !parent->prompt)
menu_warn(parent, "choice must have a prompt");
/* Check properties connected to this symbol */
sym_check_prop(sym);
sym->flags |= SYMBOL_WARNED;
}
if (sym && !sym_is_optional(sym) && parent->prompt) {
sym->rev_dep.expr = expr_alloc_or(sym->rev_dep.expr,
expr_alloc_and(parent->prompt->visible.expr,
expr_alloc_symbol(&symbol_mod)));
}
}
bool menu_has_prompt(struct menu *menu)
{
if (!menu->prompt)
return false;
return true;
}
bool menu_is_visible(struct menu *menu)
{
struct menu *child;
struct symbol *sym;
tristate visible;
if (!menu->prompt)
return false;
if (menu->visibility) {
if (expr_calc_value(menu->visibility) == no)
return no;
}
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;
}
const char *menu_get_prompt(struct menu *menu)
{
if (menu->prompt)
return menu->prompt->text;
else if (menu->sym)
return menu->sym->name;
return NULL;
}
struct menu *menu_get_root_menu(struct menu *menu)
{
return &rootmenu;
}
struct menu *menu_get_parent_menu(struct menu *menu)
{
enum prop_type type;
for (; menu != &rootmenu; menu = menu->parent) {
type = menu->prompt ? menu->prompt->type : 0;
if (type == P_MENU)
break;
}
return menu;
}
bool menu_has_help(struct menu *menu)
{
return menu->help != NULL;
}
const char *menu_get_help(struct menu *menu)
{
if (menu->help)
return menu->help;
else
return "";
}
static void get_prompt_str(struct gstr *r, struct property *prop,
struct list_head *head)
{
int i, j;
struct menu *submenu[8], *menu, *location = NULL;
struct jump_key *jump = NULL;
str_printf(r, _("Prompt: %s\n"), _(prop->text));
menu = prop->menu->parent;
for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent) {
bool accessible = menu_is_visible(menu);
submenu[i++] = menu;
if (location == NULL && accessible)
location = menu;
}
if (head && location) {
jump = xmalloc(sizeof(struct jump_key));
if (menu_is_visible(prop->menu)) {
/*
* There is not enough room to put the hint at the
* beginning of the "Prompt" line. Put the hint on the
* last "Location" line even when it would belong on
* the former.
*/
jump->target = prop->menu;
} else
jump->target = location;
if (list_empty(head))
jump->index = 0;
else
jump->index = list_entry(head->prev, struct jump_key,
entries)->index + 1;
list_add_tail(&jump->entries, head);
}
if (i > 0) {
str_printf(r, _(" Location:\n"));
for (j = 4; --i >= 0; j += 2) {
menu = submenu[i];
if (jump && menu == location)
jump->offset = r->len - 1;
str_printf(r, "%*c-> %s", j, ' ',
_(menu_get_prompt(menu)));
if (menu->sym) {
str_printf(r, " (%s [=%s])", menu->sym->name ?
menu->sym->name : _("<choice>"),
sym_get_string_value(menu->sym));
}
str_append(r, "\n");
}
}
}
/*
* get peoperty of type P_SYMBOL
*/
static struct property *get_symbol_prop(struct symbol *sym)
{
struct property *prop = NULL;
for_all_properties(sym, prop, P_SYMBOL)
break;
return prop;
}
static void get_symbol_props_str(struct gstr *r, struct symbol *sym,
enum prop_type tok, const char *prefix)
{
bool hit = false;
struct property *prop;
for_all_properties(sym, prop, tok) {
if (!hit) {
str_append(r, prefix);
hit = true;
} else
str_printf(r, " && ");
expr_gstr_print(prop->expr, r);
}
if (hit)
str_append(r, "\n");
}
/*
* head is optional and may be NULL
*/
void get_symbol_str(struct gstr *r, struct symbol *sym,
struct list_head *head)
{
struct property *prop;
if (sym && sym->name) {
str_printf(r, "Symbol: %s [=%s]\n", sym->name,
sym_get_string_value(sym));
str_printf(r, "Type : %s\n", sym_type_name(sym->type));
if (sym->type == S_INT || sym->type == S_HEX) {
prop = sym_get_range_prop(sym);
if (prop) {
str_printf(r, "Range : ");
expr_gstr_print(prop->expr, r);
str_append(r, "\n");
}
}
}
for_all_prompts(sym, prop)
get_prompt_str(r, prop, head);
prop = get_symbol_prop(sym);
if (prop) {
str_printf(r, _(" Defined at %s:%d\n"), prop->menu->file->name,
prop->menu->lineno);
if (!expr_is_yes(prop->visible.expr)) {
str_append(r, _(" Depends on: "));
expr_gstr_print(prop->visible.expr, r);
str_append(r, "\n");
}
}
get_symbol_props_str(r, sym, P_SELECT, _(" Selects: "));
if (sym->rev_dep.expr) {
str_append(r, _(" Selected by: "));
expr_gstr_print(sym->rev_dep.expr, r);
str_append(r, "\n");
}
get_symbol_props_str(r, sym, P_IMPLY, _(" Implies: "));
if (sym->implied.expr) {
str_append(r, _(" Implied by: "));
expr_gstr_print(sym->implied.expr, r);
str_append(r, "\n");
}
str_append(r, "\n\n");
}
struct gstr get_relations_str(struct symbol **sym_arr, struct list_head *head)
{
struct symbol *sym;
struct gstr res = str_new();
int i;
for (i = 0; sym_arr && (sym = sym_arr[i]); i++)
get_symbol_str(&res, sym, head);
if (!i)
str_append(&res, _("No matches found.\n"));
return res;
}
void menu_get_ext_help(struct menu *menu, struct gstr *help)
{
struct symbol *sym = menu->sym;
const char *help_text = nohelp_text;
if (menu_has_help(menu)) {
if (sym->name)
str_printf(help, "%s%s:\n\n", CONFIG_, sym->name);
help_text = menu_get_help(menu);
}
str_printf(help, "%s\n", _(help_text));
if (sym)
get_symbol_str(help, sym, NULL);
}
./BlackJoker Mini Shell 1.0