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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
*/
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <errno.h>
#include "lkc.h"
static void conf(struct menu *menu);
static void check_conf(struct menu *menu);
enum input_mode {
oldaskconfig,
syncconfig,
oldconfig,
allnoconfig,
allyesconfig,
allmodconfig,
alldefconfig,
randconfig,
defconfig,
savedefconfig,
listnewconfig,
olddefconfig,
};
static enum input_mode input_mode = oldaskconfig;
static int indent = 1;
static int tty_stdio;
static int sync_kconfig;
static int conf_cnt;
static char line[PATH_MAX];
static struct menu *rootEntry;
static void print_help(struct menu *menu)
{
struct gstr help = str_new();
menu_get_ext_help(menu, &help);
printf("\n%s\n", str_get(&help));
str_free(&help);
}
static void strip(char *str)
{
char *p = str;
int l;
while ((isspace(*p)))
p++;
l = strlen(p);
if (p != str)
memmove(str, p, l + 1);
if (!l)
return;
p = str + l - 1;
while ((isspace(*p)))
*p-- = 0;
}
/* Helper function to facilitate fgets() by Jean Sacren. */
static void xfgets(char *str, int size, FILE *in)
{
if (!fgets(str, size, in))
fprintf(stderr, "\nError in reading or end of file.\n");
if (!tty_stdio)
printf("%s", str);
}
static int conf_askvalue(struct symbol *sym, const char *def)
{
enum symbol_type type = sym_get_type(sym);
if (!sym_has_value(sym))
printf("(NEW) ");
line[0] = '\n';
line[1] = 0;
if (!sym_is_changeable(sym)) {
printf("%s\n", def);
line[0] = '\n';
line[1] = 0;
return 0;
}
switch (input_mode) {
case oldconfig:
case syncconfig:
if (sym_has_value(sym)) {
printf("%s\n", def);
return 0;
}
/* fall through */
case oldaskconfig:
fflush(stdout);
xfgets(line, sizeof(line), stdin);
return 1;
default:
break;
}
switch (type) {
case S_INT:
case S_HEX:
case S_STRING:
printf("%s\n", def);
return 1;
default:
;
}
printf("%s", line);
return 1;
}
static int conf_string(struct menu *menu)
{
struct symbol *sym = menu->sym;
const char *def;
while (1) {
printf("%*s%s ", indent - 1, "", menu->prompt->text);
printf("(%s) ", sym->name);
def = sym_get_string_value(sym);
if (sym_get_string_value(sym))
printf("[%s] ", def);
if (!conf_askvalue(sym, def))
return 0;
switch (line[0]) {
case '\n':
break;
case '?':
/* print help */
if (line[1] == '\n') {
print_help(menu);
def = NULL;
break;
}
/* fall through */
default:
line[strlen(line)-1] = 0;
def = line;
}
if (def && sym_set_string_value(sym, def))
return 0;
}
}
static int conf_sym(struct menu *menu)
{
struct symbol *sym = menu->sym;
tristate oldval, newval;
while (1) {
printf("%*s%s ", indent - 1, "", menu->prompt->text);
if (sym->name)
printf("(%s) ", sym->name);
putchar('[');
oldval = sym_get_tristate_value(sym);
switch (oldval) {
case no:
putchar('N');
break;
case mod:
putchar('M');
break;
case yes:
putchar('Y');
break;
}
if (oldval != no && sym_tristate_within_range(sym, no))
printf("/n");
if (oldval != mod && sym_tristate_within_range(sym, mod))
printf("/m");
if (oldval != yes && sym_tristate_within_range(sym, yes))
printf("/y");
printf("/?] ");
if (!conf_askvalue(sym, sym_get_string_value(sym)))
return 0;
strip(line);
switch (line[0]) {
case 'n':
case 'N':
newval = no;
if (!line[1] || !strcmp(&line[1], "o"))
break;
continue;
case 'm':
case 'M':
newval = mod;
if (!line[1])
break;
continue;
case 'y':
case 'Y':
newval = yes;
if (!line[1] || !strcmp(&line[1], "es"))
break;
continue;
case 0:
newval = oldval;
break;
case '?':
goto help;
default:
continue;
}
if (sym_set_tristate_value(sym, newval))
return 0;
help:
print_help(menu);
}
}
static int conf_choice(struct menu *menu)
{
struct symbol *sym, *def_sym;
struct menu *child;
bool is_new;
sym = menu->sym;
is_new = !sym_has_value(sym);
if (sym_is_changeable(sym)) {
conf_sym(menu);
sym_calc_value(sym);
switch (sym_get_tristate_value(sym)) {
case no:
return 1;
case mod:
return 0;
case yes:
break;
}
} else {
switch (sym_get_tristate_value(sym)) {
case no:
return 1;
case mod:
printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
return 0;
case yes:
break;
}
}
while (1) {
int cnt, def;
printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
def_sym = sym_get_choice_value(sym);
cnt = def = 0;
line[0] = 0;
for (child = menu->list; child; child = child->next) {
if (!menu_is_visible(child))
continue;
if (!child->sym) {
printf("%*c %s\n", indent, '*', menu_get_prompt(child));
continue;
}
cnt++;
if (child->sym == def_sym) {
def = cnt;
printf("%*c", indent, '>');
} else
printf("%*c", indent, ' ');
printf(" %d. %s", cnt, menu_get_prompt(child));
if (child->sym->name)
printf(" (%s)", child->sym->name);
if (!sym_has_value(child->sym))
printf(" (NEW)");
printf("\n");
}
printf("%*schoice", indent - 1, "");
if (cnt == 1) {
printf("[1]: 1\n");
goto conf_childs;
}
printf("[1-%d?]: ", cnt);
switch (input_mode) {
case oldconfig:
case syncconfig:
if (!is_new) {
cnt = def;
printf("%d\n", cnt);
break;
}
/* fall through */
case oldaskconfig:
fflush(stdout);
xfgets(line, sizeof(line), stdin);
strip(line);
if (line[0] == '?') {
print_help(menu);
continue;
}
if (!line[0])
cnt = def;
else if (isdigit(line[0]))
cnt = atoi(line);
else
continue;
break;
default:
break;
}
conf_childs:
for (child = menu->list; child; child = child->next) {
if (!child->sym || !menu_is_visible(child))
continue;
if (!--cnt)
break;
}
if (!child)
continue;
if (line[0] && line[strlen(line) - 1] == '?') {
print_help(child);
continue;
}
sym_set_choice_value(sym, child->sym);
for (child = child->list; child; child = child->next) {
indent += 2;
conf(child);
indent -= 2;
}
return 1;
}
}
static void conf(struct menu *menu)
{
struct symbol *sym;
struct property *prop;
struct menu *child;
if (!menu_is_visible(menu))
return;
sym = menu->sym;
prop = menu->prompt;
if (prop) {
const char *prompt;
switch (prop->type) {
case P_MENU:
/*
* Except in oldaskconfig mode, we show only menus that
* contain new symbols.
*/
if (input_mode != oldaskconfig && rootEntry != menu) {
check_conf(menu);
return;
}
/* fall through */
case P_COMMENT:
prompt = menu_get_prompt(menu);
if (prompt)
printf("%*c\n%*c %s\n%*c\n",
indent, '*',
indent, '*', prompt,
indent, '*');
default:
;
}
}
if (!sym)
goto conf_childs;
if (sym_is_choice(sym)) {
conf_choice(menu);
if (sym->curr.tri != mod)
return;
goto conf_childs;
}
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
conf_string(menu);
break;
default:
conf_sym(menu);
break;
}
conf_childs:
if (sym)
indent += 2;
for (child = menu->list; child; child = child->next)
conf(child);
if (sym)
indent -= 2;
}
static void check_conf(struct menu *menu)
{
struct symbol *sym;
struct menu *child;
if (!menu_is_visible(menu))
return;
sym = menu->sym;
if (sym && !sym_has_value(sym)) {
if (sym_is_changeable(sym) ||
(sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
if (input_mode == listnewconfig) {
if (sym->name) {
const char *str;
if (sym->type == S_STRING) {
str = sym_get_string_value(sym);
str = sym_escape_string_value(str);
printf("%s%s=%s\n", CONFIG_, sym->name, str);
free((void *)str);
} else {
str = sym_get_string_value(sym);
printf("%s%s=%s\n", CONFIG_, sym->name, str);
}
}
} else {
if (!conf_cnt++)
printf("*\n* Restart config...\n*\n");
rootEntry = menu_get_parent_menu(menu);
conf(rootEntry);
}
}
}
for (child = menu->list; child; child = child->next)
check_conf(child);
}
static struct option long_opts[] = {
{"oldaskconfig", no_argument, NULL, oldaskconfig},
{"oldconfig", no_argument, NULL, oldconfig},
{"syncconfig", no_argument, NULL, syncconfig},
{"defconfig", required_argument, NULL, defconfig},
{"savedefconfig", required_argument, NULL, savedefconfig},
{"allnoconfig", no_argument, NULL, allnoconfig},
{"allyesconfig", no_argument, NULL, allyesconfig},
{"allmodconfig", no_argument, NULL, allmodconfig},
{"alldefconfig", no_argument, NULL, alldefconfig},
{"randconfig", no_argument, NULL, randconfig},
{"listnewconfig", no_argument, NULL, listnewconfig},
{"olddefconfig", no_argument, NULL, olddefconfig},
{NULL, 0, NULL, 0}
};
static void conf_usage(const char *progname)
{
printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
printf("[option] is _one_ of the following:\n");
printf(" --listnewconfig List new options\n");
printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
printf(" --oldconfig Update a configuration using a provided .config as base\n");
printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
" include/{generated/,config/}\n");
printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
printf(" --defconfig <file> New config with default defined in <file>\n");
printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
printf(" --allnoconfig New config where all options are answered with no\n");
printf(" --allyesconfig New config where all options are answered with yes\n");
printf(" --allmodconfig New config where all options are answered with mod\n");
printf(" --alldefconfig New config with all symbols set to default\n");
printf(" --randconfig New config with random answer to all options\n");
}
int main(int ac, char **av)
{
const char *progname = av[0];
int opt;
const char *name, *defconfig_file = NULL /* gcc uninit */;
int no_conf_write = 0;
tty_stdio = isatty(0) && isatty(1);
while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
if (opt == 's') {
conf_set_message_callback(NULL);
continue;
}
input_mode = (enum input_mode)opt;
switch (opt) {
case syncconfig:
/*
* syncconfig is invoked during the build stage.
* Suppress distracting "configuration written to ..."
*/
conf_set_message_callback(NULL);
sync_kconfig = 1;
break;
case defconfig:
case savedefconfig:
defconfig_file = optarg;
break;
case randconfig:
{
struct timeval now;
unsigned int seed;
char *seed_env;
/*
* Use microseconds derived seed,
* compensate for systems where it may be zero
*/
gettimeofday(&now, NULL);
seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
seed_env = getenv("KCONFIG_SEED");
if( seed_env && *seed_env ) {
char *endp;
int tmp = (int)strtol(seed_env, &endp, 0);
if (*endp == '\0') {
seed = tmp;
}
}
fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
srand(seed);
break;
}
case oldaskconfig:
case oldconfig:
case allnoconfig:
case allyesconfig:
case allmodconfig:
case alldefconfig:
case listnewconfig:
case olddefconfig:
break;
case '?':
conf_usage(progname);
exit(1);
break;
}
}
if (ac == optind) {
fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
conf_usage(progname);
exit(1);
}
name = av[optind];
conf_parse(name);
//zconfdump(stdout);
switch (input_mode) {
case defconfig:
if (conf_read(defconfig_file)) {
fprintf(stderr,
"***\n"
"*** Can't find default configuration \"%s\"!\n"
"***\n",
defconfig_file);
exit(1);
}
break;
case savedefconfig:
case syncconfig:
case oldaskconfig:
case oldconfig:
case listnewconfig:
case olddefconfig:
conf_read(NULL);
break;
case allnoconfig:
case allyesconfig:
case allmodconfig:
case alldefconfig:
case randconfig:
name = getenv("KCONFIG_ALLCONFIG");
if (!name)
break;
if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
if (conf_read_simple(name, S_DEF_USER)) {
fprintf(stderr,
"*** Can't read seed configuration \"%s\"!\n",
name);
exit(1);
}
break;
}
switch (input_mode) {
case allnoconfig: name = "allno.config"; break;
case allyesconfig: name = "allyes.config"; break;
case allmodconfig: name = "allmod.config"; break;
case alldefconfig: name = "alldef.config"; break;
case randconfig: name = "allrandom.config"; break;
default: break;
}
if (conf_read_simple(name, S_DEF_USER) &&
conf_read_simple("all.config", S_DEF_USER)) {
fprintf(stderr,
"*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
name);
exit(1);
}
break;
default:
break;
}
if (sync_kconfig) {
name = getenv("KCONFIG_NOSILENTUPDATE");
if (name && *name) {
if (conf_get_changed()) {
fprintf(stderr,
"\n*** The configuration requires explicit update.\n\n");
return 1;
}
no_conf_write = 1;
}
}
switch (input_mode) {
case allnoconfig:
conf_set_all_new_symbols(def_no);
break;
case allyesconfig:
conf_set_all_new_symbols(def_yes);
break;
case allmodconfig:
conf_set_all_new_symbols(def_mod);
break;
case alldefconfig:
conf_set_all_new_symbols(def_default);
break;
case randconfig:
/* Really nothing to do in this loop */
while (conf_set_all_new_symbols(def_random)) ;
break;
case defconfig:
conf_set_all_new_symbols(def_default);
break;
case savedefconfig:
break;
case oldaskconfig:
rootEntry = &rootmenu;
conf(&rootmenu);
input_mode = oldconfig;
/* fall through */
case oldconfig:
case listnewconfig:
case syncconfig:
/* Update until a loop caused no more changes */
do {
conf_cnt = 0;
check_conf(&rootmenu);
} while (conf_cnt);
break;
case olddefconfig:
default:
break;
}
if (input_mode == savedefconfig) {
if (conf_write_defconfig(defconfig_file)) {
fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
defconfig_file);
return 1;
}
} else if (input_mode != listnewconfig) {
if (!no_conf_write && conf_write(NULL)) {
fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
exit(1);
}
/*
* Create auto.conf if it does not exist.
* This prevents GNU Make 4.1 or older from emitting
* "include/config/auto.conf: No such file or directory"
* in the top-level Makefile
*
* syncconfig always creates or updates auto.conf because it is
* used during the build.
*/
if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
fprintf(stderr,
"\n*** Error during sync of the configuration.\n\n");
return 1;
}
}
return 0;
}
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