Yet another major rework of the BusyBox config system, using the considerably
modified Kbuild system I put into uClibc. With this, there should be no more
need to modify Rules.mak since I've moved all the interesting options into the
config system. I think I've got everything updated, but you never know, I may
have made some mistakes, so watch closely.
-Erik
diff --git a/scripts/config/conf.c b/scripts/config/conf.c
new file mode 100644
index 0000000..884175e
--- /dev/null
+++ b/scripts/config/conf.c
@@ -0,0 +1,566 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <time.h>
+#include <sys/stat.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+static void conf(struct menu *menu);
+static void check_conf(struct menu *menu);
+
+enum {
+ ask_all,
+ ask_new,
+ ask_silent,
+ set_default,
+ set_yes,
+ set_mod,
+ set_no,
+ set_random
+} input_mode = ask_all;
+
+static int indent = 1;
+static int valid_stdin = 1;
+static int conf_cnt;
+static char line[128];
+static struct menu *rootEntry;
+
+static char nohelp_text[] = "Sorry, no help available for this option yet.\n";
+
+#if 0
+static void printc(int ch)
+{
+ static int sep = 0;
+
+ if (!sep) {
+ putchar('[');
+ sep = 1;
+ } else if (ch)
+ putchar('/');
+ if (!ch) {
+ putchar(']');
+ putchar(' ');
+ sep = 0;
+ } else
+ putchar(ch);
+}
+#endif
+
+static void printo(const char *o)
+{
+ static int sep = 0;
+
+ if (!sep) {
+ putchar('(');
+ sep = 1;
+ } else if (o) {
+ putchar(',');
+ putchar(' ');
+ }
+ if (!o) {
+ putchar(')');
+ putchar(' ');
+ sep = 0;
+ } else
+ printf("%s", o);
+}
+
+static void strip(char *str)
+{
+ char *p = str;
+ int l;
+
+ while ((isspace((int)*p)))
+ p++;
+ l = strlen(p);
+ if (p != str)
+ memmove(str, p, l + 1);
+ if (!l)
+ return;
+ p = str + l - 1;
+ while ((isspace((int)*p)))
+ *p-- = 0;
+}
+
+static void conf_askvalue(struct symbol *sym, const char *def)
+{
+ enum symbol_type type = sym_get_type(sym);
+ tristate val;
+
+ if (!sym_has_value(sym))
+ printf("(NEW) ");
+
+ line[0] = '\n';
+ line[1] = 0;
+
+ switch (input_mode) {
+ case ask_new:
+ case ask_silent:
+ if (sym_has_value(sym)) {
+ printf("%s\n", def);
+ return;
+ }
+ if (!valid_stdin && input_mode == ask_silent) {
+ printf("aborted!\n\n");
+ printf("Console input/output is redirected. ");
+ printf("Run 'make oldconfig' to update configuration.\n\n");
+ exit(1);
+ }
+ case ask_all:
+ fflush(stdout);
+ fgets(line, 128, stdin);
+ return;
+ case set_default:
+ printf("%s\n", def);
+ return;
+ default:
+ break;
+ }
+
+ switch (type) {
+ case S_INT:
+ case S_HEX:
+ case S_STRING:
+ printf("%s\n", def);
+ return;
+ default:
+ ;
+ }
+ switch (input_mode) {
+ case set_yes:
+ if (sym_tristate_within_range(sym, yes)) {
+ line[0] = 'y';
+ line[1] = '\n';
+ line[2] = 0;
+ break;
+ }
+ case set_mod:
+ if (type == S_TRISTATE) {
+ if (sym_tristate_within_range(sym, mod)) {
+ line[0] = 'm';
+ line[1] = '\n';
+ line[2] = 0;
+ break;
+ }
+ } else {
+ if (sym_tristate_within_range(sym, yes)) {
+ line[0] = 'y';
+ line[1] = '\n';
+ line[2] = 0;
+ break;
+ }
+ }
+ case set_no:
+ if (sym_tristate_within_range(sym, no)) {
+ line[0] = 'n';
+ line[1] = '\n';
+ line[2] = 0;
+ break;
+ }
+ case set_random:
+ do {
+ val = (tristate)(random() % 3);
+ } while (!sym_tristate_within_range(sym, val));
+ switch (val) {
+ case no: line[0] = 'n'; break;
+ case mod: line[0] = 'm'; break;
+ case yes: line[0] = 'y'; break;
+ }
+ line[1] = '\n';
+ line[2] = 0;
+ break;
+ default:
+ break;
+ }
+ printf("%s", line);
+}
+
+int conf_string(struct menu *menu)
+{
+ struct symbol *sym = menu->sym;
+ const char *def, *help;
+
+ 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);
+ conf_askvalue(sym, def);
+ switch (line[0]) {
+ case '\n':
+ break;
+ case '?':
+ /* print help */
+ if (line[1] == 0) {
+ help = nohelp_text;
+ if (menu->sym->help)
+ help = menu->sym->help;
+ printf("\n%s\n", menu->sym->help);
+ def = NULL;
+ break;
+ }
+ 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;
+ int type;
+ tristate oldval, newval;
+ const char *help;
+
+ while (1) {
+ printf("%*s%s ", indent - 1, "", menu->prompt->text);
+ if (sym->name)
+ printf("(%s) ", sym->name);
+ type = sym_get_type(sym);
+ 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");
+ if (sym->help)
+ printf("/?");
+ printf("] ");
+ conf_askvalue(sym, sym_get_string_value(sym));
+ 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:
+ help = nohelp_text;
+ if (sym->help)
+ help = sym->help;
+ printf("\n%s\n", help);
+ }
+}
+
+static int conf_choice(struct menu *menu)
+{
+ struct symbol *sym, *def_sym;
+ struct menu *cmenu, *def_menu;
+ const char *help;
+ int type, len;
+ bool is_new;
+
+ sym = menu->sym;
+ type = sym_get_type(sym);
+ is_new = !sym_has_value(sym);
+ if (sym_is_changable(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 {
+ sym->def = sym->curr;
+ if (S_TRI(sym->curr) == mod) {
+ printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
+ return 0;
+ }
+ }
+
+ while (1) {
+ printf("%*s%s ", indent - 1, "", menu_get_prompt(menu));
+ def_sym = sym_get_choice_value(sym);
+ def_menu = NULL;
+ for (cmenu = menu->list; cmenu; cmenu = cmenu->next) {
+ if (!menu_is_visible(cmenu))
+ continue;
+ printo(menu_get_prompt(cmenu));
+ if (cmenu->sym == def_sym)
+ def_menu = cmenu;
+ }
+ printo(NULL);
+ if (def_menu)
+ printf("[%s] ", menu_get_prompt(def_menu));
+ else {
+ printf("\n");
+ return 1;
+ }
+ switch (input_mode) {
+ case ask_new:
+ case ask_silent:
+ case ask_all:
+ conf_askvalue(sym, menu_get_prompt(def_menu));
+ strip(line);
+ break;
+ default:
+ line[0] = 0;
+ printf("\n");
+ }
+ if (line[0] == '?' && !line[1]) {
+ help = nohelp_text;
+ if (menu->sym->help)
+ help = menu->sym->help;
+ printf("\n%s\n", help);
+ continue;
+ }
+ if (line[0]) {
+ len = strlen(line);
+ line[len] = 0;
+
+ def_menu = NULL;
+ for (cmenu = menu->list; cmenu; cmenu = cmenu->next) {
+ if (!cmenu->sym || !menu_is_visible(cmenu))
+ continue;
+ if (!strncasecmp(line, menu_get_prompt(cmenu), len)) {
+ def_menu = cmenu;
+ break;
+ }
+ }
+ }
+ if (def_menu) {
+ sym_set_choice_value(sym, def_menu->sym);
+ if (def_menu->list) {
+ indent += 2;
+ conf(def_menu->list);
+ 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:
+ if (input_mode == ask_silent && rootEntry != menu) {
+ check_conf(menu);
+ return;
+ }
+ 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 (S_TRI(sym->curr) != 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)
+ goto conf_childs;
+
+ if (sym_is_choice(sym)) {
+ if (!sym_has_value(sym)) {
+ if (!conf_cnt++)
+ printf("*\n* Restart config...\n*\n");
+ rootEntry = menu_get_parent_menu(menu);
+ conf(rootEntry);
+ }
+ if (sym_get_tristate_value(sym) != mod)
+ return;
+ goto conf_childs;
+ }
+
+ if (!sym_has_value(sym)) {
+ if (!conf_cnt++)
+ printf("*\n* Restart config...\n*\n");
+ rootEntry = menu_get_parent_menu(menu);
+ conf(rootEntry);
+ }
+
+conf_childs:
+ for (child = menu->list; child; child = child->next)
+ check_conf(child);
+}
+
+int main(int ac, char **av)
+{
+ const char *name;
+ struct stat tmpstat;
+
+ if (ac > 1 && av[1][0] == '-') {
+ switch (av[1][1]) {
+ case 'o':
+ input_mode = ask_new;
+ break;
+ case 's':
+ input_mode = ask_silent;
+ valid_stdin = isatty(0) && isatty(1) && isatty(2);
+ break;
+ case 'd':
+ input_mode = set_default;
+ break;
+ case 'n':
+ input_mode = set_no;
+ break;
+ case 'm':
+ input_mode = set_mod;
+ break;
+ case 'y':
+ input_mode = set_yes;
+ break;
+ case 'r':
+ input_mode = set_random;
+ srandom(time(NULL));
+ break;
+ case 'h':
+ case '?':
+ printf("%s [-o|-s] config\n", av[0]);
+ exit(0);
+ }
+ name = av[2];
+ } else
+ name = av[1];
+ conf_parse(name);
+ //zconfdump(stdout);
+ switch (input_mode) {
+ case set_default:
+ name = conf_get_default_confname();
+ if (conf_read(name)) {
+ printf("***\n"
+ "*** Can't find default configuration \"%s\"!\n"
+ "***\n", name);
+ exit(1);
+ }
+ break;
+ case ask_silent:
+ if (stat(".config", &tmpstat)) {
+ printf("***\n"
+ "*** You have not yet configured BusyBox!\n"
+ "***\n"
+ "*** Please run some configurator (e.g. \"make oldconfig\"\n"
+ "*** or \"make menuconfig\").\n"
+ "***\n");
+ exit(1);
+ }
+ case ask_all:
+ case ask_new:
+ conf_read(NULL);
+ break;
+ default:
+ break;
+ }
+
+ if (input_mode != ask_silent) {
+ rootEntry = &rootmenu;
+ conf(&rootmenu);
+ if (input_mode == ask_all) {
+ input_mode = ask_silent;
+ valid_stdin = 1;
+ }
+ }
+ do {
+ conf_cnt = 0;
+ check_conf(&rootmenu);
+ } while (conf_cnt);
+ conf_write(NULL);
+ return 0;
+}