add kconfig from linux 2.6 to scripts/config

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@3682 3c298f89-4303-0410-b956-a3cf2f4a3e73

scripts/config/Makefile

@@ -0,0 +1,49 @@
+# ===========================================================================
+# Kernel configuration targets
+# These targets are used from top-level makefile
+
+# ===========================================================================
+# Shared Makefile for the various kconfig executables:
+# conf:	  Used for defconfig, oldconfig and related targets
+# mconf:  Used for the mconfig target.
+#         Utilizes the lxdialog package
+# object files used by all kconfig flavours
+
+conf-objs	:= conf.o zconf.tab.o
+mconf-objs	:= mconf.o zconf.tab.o
+
+clean-files	:= lkc_defs.h qconf.moc .tmp_qtcheck \
+		   .tmp_gtkcheck zconf.tab.c lex.zconf.c zconf.hash.c
+
+all: conf mconf lxdialog
+
+.PHONY: lxdialog
+lxdialog:
+	$(MAKE) -C lxdialog
+
+conf: $(conf-objs)
+mconf: $(mconf-objs)
+
+clean:
+	rm -f *.o $(clean-files) conf mconf
+	$(MAKE) -C lxdialog clean
+
+zconf.tab.o: lex.zconf.c zconf.hash.c
+
+kconfig_load.o: lkc_defs.h
+
+lkc_defs.h: $(src)/lkc_proto.h
+	sed < $< > $@ 's/P(\([^,]*\),.*/#define \1 (\*\1_p)/'
+
+zconf.tab.c: zconf.y
+lex.zconf.c: zconf.l
+zconf.hash.c: zconf.gperf
+
+%.tab.c: %.y
+	bison -l -b $* -p $(notdir $*) $< && cp $@ $@_shipped || cp $@_shipped $@
+
+lex.%.c: %.l
+	flex -L -P$(notdir $*) -o$@ $< && cp $@ $@_shipped || cp $@_shipped $@
+
+%.hash.c: %.gperf
+	gperf < $< > $@ && cp $@ $@_shipped || cp $@_shipped $@

scripts/config/conf.c

@@ -0,0 +1,626 @@
+/*
+ * 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;
+char *defconfig_file;
+
+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[] = N_("Sorry, no help available for this option yet.\n");
+
+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;
+}
+
+static void check_stdin(void)
+{
+	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);
+	}
+}
+
+static char *fgets_check_stream(char *s, int size, FILE *stream)
+{
+	char *ret = fgets(s, size, stream);
+
+	if (ret == NULL && feof(stream)) {
+		printf(_("aborted!\n\n"));
+		printf(_("Console input is closed. "));
+		printf(_("Run 'make oldconfig' to update configuration.\n\n"));
+		exit(1);
+	}
+
+	return ret;
+}
+
+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;
+
+	if (!sym_is_changable(sym)) {
+		printf("%s\n", def);
+		line[0] = '\n';
+		line[1] = 0;
+		return;
+	}
+
+	switch (input_mode) {
+	case set_no:
+	case set_mod:
+	case set_yes:
+	case set_random:
+		if (sym_has_value(sym)) {
+			printf("%s\n", def);
+			return;
+		}
+		break;
+	case ask_new:
+	case ask_silent:
+		if (sym_has_value(sym)) {
+			printf("%s\n", def);
+			return;
+		}
+		check_stdin();
+	case ask_all:
+		fflush(stdout);
+		fgets_check_stream(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] == '\n') {
+				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 *child;
+	int type;
+	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 {
+		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';
+		line[1] = 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);
+		if (sym->help)
+			printf("?");
+		printf("]: ");
+		switch (input_mode) {
+		case ask_new:
+		case ask_silent:
+			if (!is_new) {
+				cnt = def;
+				printf("%d\n", cnt);
+				break;
+			}
+			check_stdin();
+		case ask_all:
+			fflush(stdout);
+			fgets_check_stream(line, 128, stdin);
+			strip(line);
+			if (line[0] == '?') {
+				printf("\n%s\n", menu->sym->help ?
+					menu->sym->help : nohelp_text);
+				continue;
+			}
+			if (!line[0])
+				cnt = def;
+			else if (isdigit(line[0]))
+				cnt = atoi(line);
+			else
+				continue;
+			break;
+		case set_random:
+			def = (random() % cnt) + 1;
+		case set_default:
+		case set_yes:
+		case set_mod:
+		case set_no:
+			cnt = def;
+			printf("%d\n", cnt);
+			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[strlen(line) - 1] == '?') {
+			printf("\n%s\n", child->sym->help ?
+				child->sym->help : nohelp_text);
+			continue;
+		}
+		sym_set_choice_value(sym, child->sym);
+		if (child->list) {
+			indent += 2;
+			conf(child->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 (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_changable(sym) ||
+		    (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
+			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);
+}
+
+int main(int ac, char **av)
+{
+	int i = 1;
+	const char *name;
+	struct stat tmpstat;
+
+	if (ac > i && av[i][0] == '-') {
+		switch (av[i++][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 'D':
+			input_mode = set_default;
+			defconfig_file = av[i++];
+			if (!defconfig_file) {
+				printf(_("%s: No default config file specified\n"),
+					av[0]);
+				exit(1);
+			}
+			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[i];
+	if (!name) {
+		printf(_("%s: Kconfig file missing\n"), av[0]);
+	}
+	conf_parse(name);
+	//zconfdump(stdout);
+	switch (input_mode) {
+	case set_default:
+		if (!defconfig_file)
+			defconfig_file = conf_get_default_confname();
+		if (conf_read(defconfig_file)) {
+			printf("***\n"
+				"*** Can't find default configuration \"%s\"!\n"
+				"***\n", defconfig_file);
+			exit(1);
+		}
+		break;
+	case ask_silent:
+		if (stat(".config", &tmpstat)) {
+			printf(_("***\n"
+				"*** You have not yet configured your kernel!\n"
+				"***\n"
+				"*** Please run some configurator (e.g. \"make oldconfig\" or\n"
+				"*** \"make menuconfig\" or \"make xconfig\").\n"
+				"***\n"));
+			exit(1);
+		}
+	case ask_all:
+	case ask_new:
+		conf_read(NULL);
+		break;
+	case set_no:
+	case set_mod:
+	case set_yes:
+	case set_random:
+		name = getenv("KCONFIG_ALLCONFIG");
+		if (name && !stat(name, &tmpstat)) {
+			conf_read_simple(name);
+			break;
+		}
+		switch (input_mode) {
+		case set_no:	 name = "allno.config"; break;
+		case set_mod:	 name = "allmod.config"; break;
+		case set_yes:	 name = "allyes.config"; break;
+		case set_random: name = "allrandom.config"; break;
+		default: break;
+		}
+		if (!stat(name, &tmpstat))
+			conf_read_simple(name);
+		else if (!stat("all.config", &tmpstat))
+			conf_read_simple("all.config");
+		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);
+	if (conf_write(NULL)) {
+		fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
+		return 1;
+	}
+	return 0;
+}

scripts/config/confdata.c

@@ -0,0 +1,530 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <sys/stat.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+static void conf_warning(const char *fmt, ...)
+	__attribute__ ((format (printf, 1, 2)));
+
+static const char *conf_filename;
+static int conf_lineno, conf_warnings, conf_unsaved;
+
+const char conf_def_filename[] = ".config";
+
+const char conf_defname[] = "arch/$ARCH/defconfig";
+
+const char *conf_confnames[] = {
+	".config",
+	"/lib/modules/$UNAME_RELEASE/.config",
+	"/etc/kernel-config",
+	"/boot/config-$UNAME_RELEASE",
+	conf_defname,
+	NULL,
+};
+
+static void conf_warning(const char *fmt, ...)
+{
+	va_list ap;
+	va_start(ap, fmt);
+	fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
+	vfprintf(stderr, fmt, ap);
+	fprintf(stderr, "\n");
+	va_end(ap);
+	conf_warnings++;
+}
+
+static char *conf_expand_value(const char *in)
+{
+	struct symbol *sym;
+	const char *src;
+	static char res_value[SYMBOL_MAXLENGTH];
+	char *dst, name[SYMBOL_MAXLENGTH];
+
+	res_value[0] = 0;
+	dst = name;
+	while ((src = strchr(in, '$'))) {
+		strncat(res_value, in, src - in);
+		src++;
+		dst = name;
+		while (isalnum(*src) || *src == '_')
+			*dst++ = *src++;
+		*dst = 0;
+		sym = sym_lookup(name, 0);
+		sym_calc_value(sym);
+		strcat(res_value, sym_get_string_value(sym));
+		in = src;
+	}
+	strcat(res_value, in);
+
+	return res_value;
+}
+
+char *conf_get_default_confname(void)
+{
+	struct stat buf;
+	static char fullname[PATH_MAX+1];
+	char *env, *name;
+
+	name = conf_expand_value(conf_defname);
+	env = getenv(SRCTREE);
+	if (env) {
+		sprintf(fullname, "%s/%s", env, name);
+		if (!stat(fullname, &buf))
+			return fullname;
+	}
+	return name;
+}
+
+int conf_read_simple(const char *name)
+{
+	FILE *in = NULL;
+	char line[1024];
+	char *p, *p2;
+	struct symbol *sym;
+	int i;
+
+	if (name) {
+		in = zconf_fopen(name);
+	} else {
+		const char **names = conf_confnames;
+		while ((name = *names++)) {
+			name = conf_expand_value(name);
+			in = zconf_fopen(name);
+			if (in) {
+				printf(_("#\n"
+				         "# using defaults found in %s\n"
+				         "#\n"), name);
+				break;
+			}
+		}
+	}
+	if (!in)
+		return 1;
+
+	conf_filename = name;
+	conf_lineno = 0;
+	conf_warnings = 0;
+	conf_unsaved = 0;
+
+	for_all_symbols(i, sym) {
+		sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
+		if (sym_is_choice(sym))
+			sym->flags &= ~SYMBOL_NEW;
+		sym->flags &= ~SYMBOL_VALID;
+		switch (sym->type) {
+		case S_INT:
+		case S_HEX:
+		case S_STRING:
+			if (sym->user.val)
+				free(sym->user.val);
+		default:
+			sym->user.val = NULL;
+			sym->user.tri = no;
+		}
+	}
+
+	while (fgets(line, sizeof(line), in)) {
+		conf_lineno++;
+		sym = NULL;
+		switch (line[0]) {
+		case '#':
+			if (memcmp(line + 2, "CONFIG_", 7))
+				continue;
+			p = strchr(line + 9, ' ');
+			if (!p)
+				continue;
+			*p++ = 0;
+			if (strncmp(p, "is not set", 10))
+				continue;
+			sym = sym_find(line + 9);
+			if (!sym) {
+				conf_warning("trying to assign nonexistent symbol %s", line + 9);
+				break;
+			} else if (!(sym->flags & SYMBOL_NEW)) {
+				conf_warning("trying to reassign symbol %s", sym->name);
+				break;
+			}
+			switch (sym->type) {
+			case S_BOOLEAN:
+			case S_TRISTATE:
+				sym->user.tri = no;
+				sym->flags &= ~SYMBOL_NEW;
+				break;
+			default:
+				;
+			}
+			break;
+		case 'C':
+			if (memcmp(line, "CONFIG_", 7)) {
+				conf_warning("unexpected data");
+				continue;
+			}
+			p = strchr(line + 7, '=');
+			if (!p)
+				continue;
+			*p++ = 0;
+			p2 = strchr(p, '\n');
+			if (p2)
+				*p2 = 0;
+			sym = sym_find(line + 7);
+			if (!sym) {
+				conf_warning("trying to assign nonexistent symbol %s", line + 7);
+				break;
+			} else if (!(sym->flags & SYMBOL_NEW)) {
+				conf_warning("trying to reassign symbol %s", sym->name);
+				break;
+			}
+			switch (sym->type) {
+			case S_TRISTATE:
+				if (p[0] == 'm') {
+					sym->user.tri = mod;
+					sym->flags &= ~SYMBOL_NEW;
+					break;
+				}
+			case S_BOOLEAN:
+				if (p[0] == 'y') {
+					sym->user.tri = yes;
+					sym->flags &= ~SYMBOL_NEW;
+					break;
+				}
+				if (p[0] == 'n') {
+					sym->user.tri = no;
+					sym->flags &= ~SYMBOL_NEW;
+					break;
+				}
+				conf_warning("symbol value '%s' invalid for %s", p, sym->name);
+				break;
+			case S_STRING:
+				if (*p++ != '"')
+					break;
+				for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
+					if (*p2 == '"') {
+						*p2 = 0;
+						break;
+					}
+					memmove(p2, p2 + 1, strlen(p2));
+				}
+				if (!p2) {
+					conf_warning("invalid string found");
+					continue;
+				}
+			case S_INT:
+			case S_HEX:
+				if (sym_string_valid(sym, p)) {
+					sym->user.val = strdup(p);
+					sym->flags &= ~SYMBOL_NEW;
+				} else {
+					conf_warning("symbol value '%s' invalid for %s", p, sym->name);
+					continue;
+				}
+				break;
+			default:
+				;
+			}
+			break;
+		case '\n':
+			break;
+		default:
+			conf_warning("unexpected data");
+			continue;
+		}
+		if (sym && sym_is_choice_value(sym)) {
+			struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
+			switch (sym->user.tri) {
+			case no:
+				break;
+			case mod:
+				if (cs->user.tri == yes) {
+					conf_warning("%s creates inconsistent choice state", sym->name);
+					cs->flags |= SYMBOL_NEW;
+				}
+				break;
+			case yes:
+				if (cs->user.tri != no) {
+					conf_warning("%s creates inconsistent choice state", sym->name);
+					cs->flags |= SYMBOL_NEW;
+				} else
+					cs->user.val = sym;
+				break;
+			}
+			cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
+		}
+	}
+	fclose(in);
+
+	if (modules_sym)
+		sym_calc_value(modules_sym);
+	return 0;
+}
+
+int conf_read(const char *name)
+{
+	struct symbol *sym;
+	struct property *prop;
+	struct expr *e;
+	int i;
+
+	if (conf_read_simple(name))
+		return 1;
+
+	for_all_symbols(i, sym) {
+		sym_calc_value(sym);
+		if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
+			goto sym_ok;
+		if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
+			/* check that calculated value agrees with saved value */
+			switch (sym->type) {
+			case S_BOOLEAN:
+			case S_TRISTATE:
+				if (sym->user.tri != sym_get_tristate_value(sym))
+					break;
+				if (!sym_is_choice(sym))
+					goto sym_ok;
+			default:
+				if (!strcmp(sym->curr.val, sym->user.val))
+					goto sym_ok;
+				break;
+			}
+		} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
+			/* no previous value and not saved */
+			goto sym_ok;
+		conf_unsaved++;
+		/* maybe print value in verbose mode... */
+	sym_ok:
+		if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
+			if (sym->visible == no)
+				sym->flags |= SYMBOL_NEW;
+			switch (sym->type) {
+			case S_STRING:
+			case S_INT:
+			case S_HEX:
+				if (!sym_string_within_range(sym, sym->user.val)) {
+					sym->flags |= SYMBOL_NEW;
+					sym->flags &= ~SYMBOL_VALID;
+				}
+			default:
+				break;
+			}
+		}
+		if (!sym_is_choice(sym))
+			continue;
+		prop = sym_get_choice_prop(sym);
+		for (e = prop->expr; e; e = e->left.expr)
+			if (e->right.sym->visible != no)
+				sym->flags |= e->right.sym->flags & SYMBOL_NEW;
+	}
+
+	sym_change_count = conf_warnings && conf_unsaved;
+
+	return 0;
+}
+
+int conf_write(const char *name)
+{
+	FILE *out, *out_h;
+	struct symbol *sym;
+	struct menu *menu;
+	const char *basename;
+	char dirname[128], tmpname[128], newname[128];
+	int type, l;
+	const char *str;
+	time_t now;
+	int use_timestamp = 1;
+	char *env;
+
+	dirname[0] = 0;
+	if (name && name[0]) {
+		struct stat st;
+		char *slash;
+
+		if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
+			strcpy(dirname, name);
+			strcat(dirname, "/");
+			basename = conf_def_filename;
+		} else if ((slash = strrchr(name, '/'))) {
+			int size = slash - name + 1;
+			memcpy(dirname, name, size);
+			dirname[size] = 0;
+			if (slash[1])
+				basename = slash + 1;
+			else
+				basename = conf_def_filename;
+		} else
+			basename = name;
+	} else
+		basename = conf_def_filename;
+
+	sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
+	out = fopen(newname, "w");
+	if (!out)
+		return 1;
+	out_h = NULL;
+	if (!name) {
+		out_h = fopen(".tmpconfig.h", "w");
+		if (!out_h)
+			return 1;
+	}
+	sym = sym_lookup("KERNELVERSION", 0);
+	sym_calc_value(sym);
+	time(&now);
+	env = getenv("KCONFIG_NOTIMESTAMP");
+	if (env && *env)
+		use_timestamp = 0;
+
+	fprintf(out, _("#\n"
+		       "# Automatically generated make config: don't edit\n"
+		       "# Linux kernel version: %s\n"
+		       "%s%s"
+		       "#\n"),
+		     sym_get_string_value(sym),
+		     use_timestamp ? "# " : "",
+		     use_timestamp ? ctime(&now) : "");
+	if (out_h)
+		fprintf(out_h, "/*\n"
+			       " * Automatically generated C config: don't edit\n"
+			       " * Linux kernel version: %s\n"
+			       "%s%s"
+			       " */\n"
+			       "#define AUTOCONF_INCLUDED\n",
+			       sym_get_string_value(sym),
+			       use_timestamp ? " * " : "",
+			       use_timestamp ? ctime(&now) : "");
+
+	if (!sym_change_count)
+		sym_clear_all_valid();
+
+	menu = rootmenu.list;
+	while (menu) {
+		sym = menu->sym;
+		if (!sym) {
+			if (!menu_is_visible(menu))
+				goto next;
+			str = menu_get_prompt(menu);
+			fprintf(out, "\n"
+				     "#\n"
+				     "# %s\n"
+				     "#\n", str);
+			if (out_h)
+				fprintf(out_h, "\n"
+					       "/*\n"
+					       " * %s\n"
+					       " */\n", str);
+		} else if (!(sym->flags & SYMBOL_CHOICE)) {
+			sym_calc_value(sym);
+			if (!(sym->flags & SYMBOL_WRITE))
+				goto next;
+			sym->flags &= ~SYMBOL_WRITE;
+			type = sym->type;
+			if (type == S_TRISTATE) {
+				sym_calc_value(modules_sym);
+				if (modules_sym->curr.tri == no)
+					type = S_BOOLEAN;
+			}
+			switch (type) {
+			case S_BOOLEAN:
+			case S_TRISTATE:
+				switch (sym_get_tristate_value(sym)) {
+				case no:
+					fprintf(out, "# CONFIG_%s is not set\n", sym->name);
+					if (out_h)
+						fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
+					break;
+				case mod:
+					fprintf(out, "CONFIG_%s=m\n", sym->name);
+					if (out_h)
+						fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
+					break;
+				case yes:
+					fprintf(out, "CONFIG_%s=y\n", sym->name);
+					if (out_h)
+						fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
+					break;
+				}
+				break;
+			case S_STRING:
+				// fix me
+				str = sym_get_string_value(sym);
+				fprintf(out, "CONFIG_%s=\"", sym->name);
+				if (out_h)
+					fprintf(out_h, "#define CONFIG_%s \"", sym->name);
+				do {
+					l = strcspn(str, "\"\\");
+					if (l) {
+						fwrite(str, l, 1, out);
+						if (out_h)
+							fwrite(str, l, 1, out_h);
+					}
+					str += l;
+					while (*str == '\\' || *str == '"') {
+						fprintf(out, "\\%c", *str);
+						if (out_h)
+							fprintf(out_h, "\\%c", *str);
+						str++;
+					}
+				} while (*str);
+				fputs("\"\n", out);
+				if (out_h)
+					fputs("\"\n", out_h);
+				break;
+			case S_HEX:
+				str = sym_get_string_value(sym);
+				if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
+					fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
+					if (out_h)
+						fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
+					break;
+				}
+			case S_INT:
+				str = sym_get_string_value(sym);
+				fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
+				if (out_h)
+					fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
+				break;
+			}
+		}
+
+	next:
+		if (menu->list) {
+			menu = menu->list;
+			continue;
+		}
+		if (menu->next)
+			menu = menu->next;
+		else while ((menu = menu->parent)) {
+			if (menu->next) {
+				menu = menu->next;
+				break;
+			}
+		}
+	}
+	fclose(out);
+	if (out_h) {
+		fclose(out_h);
+		rename(".tmpconfig.h", "include/linux/autoconf.h");
+		file_write_dep(NULL);
+	}
+	if (!name || basename != conf_def_filename) {
+		if (!name)
+			name = conf_def_filename;
+		sprintf(tmpname, "%s.old", name);
+		rename(name, tmpname);
+	}
+	sprintf(tmpname, "%s%s", dirname, basename);
+	if (rename(newname, tmpname))
+		return 1;
+
+	sym_change_count = 0;
+
+	return 0;
+}

scripts/config/expr.h

@@ -0,0 +1,194 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#ifndef EXPR_H
+#define EXPR_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#ifndef __cplusplus
+#include <stdbool.h>
+#endif
+
+struct file {
+	struct file *next;
+	struct file *parent;
+	char *name;
+	int lineno;
+	int flags;
+};
+
+#define FILE_BUSY		0x0001
+#define FILE_SCANNED		0x0002
+#define FILE_PRINTED		0x0004
+
+typedef enum tristate {
+	no, mod, yes
+} tristate;
+
+enum expr_type {
+	E_NONE, E_OR, E_AND, E_NOT, E_EQUAL, E_UNEQUAL, E_CHOICE, E_SYMBOL, E_RANGE
+};
+
+union expr_data {
+	struct expr *expr;
+	struct symbol *sym;
+};
+
+struct expr {
+	enum expr_type type;
+	union expr_data left, right;
+};
+
+#define E_OR(dep1, dep2)	(((dep1)>(dep2))?(dep1):(dep2))
+#define E_AND(dep1, dep2)	(((dep1)<(dep2))?(dep1):(dep2))
+#define E_NOT(dep)		(2-(dep))
+
+struct expr_value {
+	struct expr *expr;
+	tristate tri;
+};
+
+struct symbol_value {
+	void *val;
+	tristate tri;
+};
+
+enum symbol_type {
+	S_UNKNOWN, S_BOOLEAN, S_TRISTATE, S_INT, S_HEX, S_STRING, S_OTHER
+};
+
+struct symbol {
+	struct symbol *next;
+	char *name;
+	char *help;
+	enum symbol_type type;
+	struct symbol_value curr, user;
+	tristate visible;
+	int flags;
+	struct property *prop;
+	struct expr *dep, *dep2;
+	struct expr_value rev_dep;
+};
+
+#define for_all_symbols(i, sym) for (i = 0; i < 257; i++) for (sym = symbol_hash[i]; sym; sym = sym->next) if (sym->type != S_OTHER)
+
+#define SYMBOL_YES		0x0001
+#define SYMBOL_MOD		0x0002
+#define SYMBOL_NO		0x0004
+#define SYMBOL_CONST		0x0007
+#define SYMBOL_CHECK		0x0008
+#define SYMBOL_CHOICE		0x0010
+#define SYMBOL_CHOICEVAL	0x0020
+#define SYMBOL_PRINTED		0x0040
+#define SYMBOL_VALID		0x0080
+#define SYMBOL_OPTIONAL		0x0100
+#define SYMBOL_WRITE		0x0200
+#define SYMBOL_CHANGED		0x0400
+#define SYMBOL_NEW		0x0800
+#define SYMBOL_AUTO		0x1000
+#define SYMBOL_CHECKED		0x2000
+#define SYMBOL_WARNED		0x8000
+
+#define SYMBOL_MAXLENGTH	256
+#define SYMBOL_HASHSIZE		257
+#define SYMBOL_HASHMASK		0xff
+
+enum prop_type {
+	P_UNKNOWN, P_PROMPT, P_COMMENT, P_MENU, P_DEFAULT, P_CHOICE, P_SELECT, P_RANGE
+};
+
+struct property {
+	struct property *next;
+	struct symbol *sym;
+	enum prop_type type;
+	const char *text;
+	struct expr_value visible;
+	struct expr *expr;
+	struct menu *menu;
+	struct file *file;
+	int lineno;
+};
+
+#define for_all_properties(sym, st, tok) \
+	for (st = sym->prop; st; st = st->next) \
+		if (st->type == (tok))
+#define for_all_defaults(sym, st) for_all_properties(sym, st, P_DEFAULT)
+#define for_all_choices(sym, st) for_all_properties(sym, st, P_CHOICE)
+#define for_all_prompts(sym, st) \
+	for (st = sym->prop; st; st = st->next) \
+		if (st->text)
+
+struct menu {
+	struct menu *next;
+	struct menu *parent;
+	struct menu *list;
+	struct symbol *sym;
+	struct property *prompt;
+	struct expr *dep;
+	unsigned int flags;
+	//char *help;
+	struct file *file;
+	int lineno;
+	void *data;
+};
+
+#define MENU_CHANGED		0x0001
+#define MENU_ROOT		0x0002
+
+#ifndef SWIG
+
+extern struct file *file_list;
+extern struct file *current_file;
+struct file *lookup_file(const char *name);
+
+extern struct symbol symbol_yes, symbol_no, symbol_mod;
+extern struct symbol *modules_sym;
+extern int cdebug;
+struct expr *expr_alloc_symbol(struct symbol *sym);
+struct expr *expr_alloc_one(enum expr_type type, struct expr *ce);
+struct expr *expr_alloc_two(enum expr_type type, struct expr *e1, struct expr *e2);
+struct expr *expr_alloc_comp(enum expr_type type, struct symbol *s1, struct symbol *s2);
+struct expr *expr_alloc_and(struct expr *e1, struct expr *e2);
+struct expr *expr_alloc_or(struct expr *e1, struct expr *e2);
+struct expr *expr_copy(struct expr *org);
+void expr_free(struct expr *e);
+int expr_eq(struct expr *e1, struct expr *e2);
+void expr_eliminate_eq(struct expr **ep1, struct expr **ep2);
+tristate expr_calc_value(struct expr *e);
+struct expr *expr_eliminate_yn(struct expr *e);
+struct expr *expr_trans_bool(struct expr *e);
+struct expr *expr_eliminate_dups(struct expr *e);
+struct expr *expr_transform(struct expr *e);
+int expr_contains_symbol(struct expr *dep, struct symbol *sym);
+bool expr_depends_symbol(struct expr *dep, struct symbol *sym);
+struct expr *expr_extract_eq_and(struct expr **ep1, struct expr **ep2);
+struct expr *expr_extract_eq_or(struct expr **ep1, struct expr **ep2);
+void expr_extract_eq(enum expr_type type, struct expr **ep, struct expr **ep1, struct expr **ep2);
+struct expr *expr_trans_compare(struct expr *e, enum expr_type type, struct symbol *sym);
+
+void expr_fprint(struct expr *e, FILE *out);
+struct gstr; /* forward */
+void expr_gstr_print(struct expr *e, struct gstr *gs);
+
+static inline int expr_is_yes(struct expr *e)
+{
+	return !e || (e->type == E_SYMBOL && e->left.sym == &symbol_yes);
+}
+
+static inline int expr_is_no(struct expr *e)
+{
+	return e && (e->type == E_SYMBOL && e->left.sym == &symbol_no);
+}
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EXPR_H */

scripts/config/kconfig_load.c

@@ -0,0 +1,35 @@
+#include <dlfcn.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "lkc.h"
+
+#define P(name,type,arg)	type (*name ## _p) arg
+#include "lkc_proto.h"
+#undef P
+
+void kconfig_load(void)
+{
+	void *handle;
+	char *error;
+
+	handle = dlopen("./libkconfig.so", RTLD_LAZY);
+	if (!handle) {
+		handle = dlopen("./scripts/kconfig/libkconfig.so", RTLD_LAZY);
+		if (!handle) {
+			fprintf(stderr, "%s\n", dlerror());
+			exit(1);
+		}
+	}
+
+#define P(name,type,arg)			\
+{						\
+	name ## _p = dlsym(handle, #name);	\
+        if ((error = dlerror()))  {		\
+                fprintf(stderr, "%s\n", error);	\
+		exit(1);			\
+	}					\
+}
+#include "lkc_proto.h"
+#undef P
+}

scripts/config/lex.backup

@@ -0,0 +1 @@
+No backing up.

scripts/config/lkc.h

@@ -0,0 +1,147 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#ifndef LKC_H
+#define LKC_H
+
+#include "expr.h"
+
+#ifndef KBUILD_NO_NLS
+# include <libintl.h>
+#else
+# define gettext(Msgid) ((const char *) (Msgid))
+# define textdomain(Domainname) ((const char *) (Domainname))
+# define bindtextdomain(Domainname, Dirname) ((const char *) (Dirname))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef LKC_DIRECT_LINK
+#define P(name,type,arg)	extern type name arg
+#else
+#include "lkc_defs.h"
+#define P(name,type,arg)	extern type (*name ## _p) arg
+#endif
+#include "lkc_proto.h"
+#undef P
+
+#define SRCTREE "srctree"
+
+#define PACKAGE "linux"
+#define LOCALEDIR "/usr/share/locale"
+
+#define _(text) gettext(text)
+#define N_(text) (text)
+
+
+#define TF_COMMAND	0x0001
+#define TF_PARAM	0x0002
+
+struct kconf_id {
+	int name;
+	int token;
+	unsigned int flags;
+	enum symbol_type stype;
+};
+
+int zconfparse(void);
+void zconfdump(FILE *out);
+
+extern int zconfdebug;
+void zconf_starthelp(void);
+FILE *zconf_fopen(const char *name);
+void zconf_initscan(const char *name);
+void zconf_nextfile(const char *name);
+int zconf_lineno(void);
+char *zconf_curname(void);
+
+/* confdata.c */
+extern const char conf_def_filename[];
+
+char *conf_get_default_confname(void);
+
+/* kconfig_load.c */
+void kconfig_load(void);
+
+/* menu.c */
+void menu_init(void);
+struct menu *menu_add_menu(void);
+void menu_end_menu(void);
+void menu_add_entry(struct symbol *sym);
+void menu_end_entry(void);
+void menu_add_dep(struct expr *dep);
+struct property *menu_add_prop(enum prop_type type, char *prompt, struct expr *expr, struct expr *dep);
+struct property *menu_add_prompt(enum prop_type type, char *prompt, struct expr *dep);
+void menu_add_expr(enum prop_type type, struct expr *expr, struct expr *dep);
+void menu_add_symbol(enum prop_type type, struct symbol *sym, struct expr *dep);
+void menu_finalize(struct menu *parent);
+void menu_set_type(int type);
+
+/* util.c */
+struct file *file_lookup(const char *name);
+int file_write_dep(const char *name);
+
+struct gstr {
+	size_t len;
+	char  *s;
+};
+struct gstr str_new(void);
+struct gstr str_assign(const char *s);
+void str_free(struct gstr *gs);
+void str_append(struct gstr *gs, const char *s);
+void str_printf(struct gstr *gs, const char *fmt, ...);
+const char *str_get(struct gstr *gs);
+
+/* symbol.c */
+void sym_init(void);
+void sym_clear_all_valid(void);
+void sym_set_changed(struct symbol *sym);
+struct symbol *sym_check_deps(struct symbol *sym);
+struct property *prop_alloc(enum prop_type type, struct symbol *sym);
+struct symbol *prop_get_symbol(struct property *prop);
+
+static inline tristate sym_get_tristate_value(struct symbol *sym)
+{
+	return sym->curr.tri;
+}
+
+
+static inline struct symbol *sym_get_choice_value(struct symbol *sym)
+{
+	return (struct symbol *)sym->curr.val;
+}
+
+static inline bool sym_set_choice_value(struct symbol *ch, struct symbol *chval)
+{
+	return sym_set_tristate_value(chval, yes);
+}
+
+static inline bool sym_is_choice(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_CHOICE ? true : false;
+}
+
+static inline bool sym_is_choice_value(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_CHOICEVAL ? true : false;
+}
+
+static inline bool sym_is_optional(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_OPTIONAL ? true : false;
+}
+
+static inline bool sym_has_value(struct symbol *sym)
+{
+	return sym->flags & SYMBOL_NEW ? false : true;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* LKC_H */

scripts/config/lkc_proto.h

@@ -0,0 +1,41 @@
+
+/* confdata.c */
+P(conf_parse,void,(const char *name));
+P(conf_read,int,(const char *name));
+P(conf_read_simple,int,(const char *name));
+P(conf_write,int,(const char *name));
+
+/* menu.c */
+P(rootmenu,struct menu,);
+
+P(menu_is_visible,bool,(struct menu *menu));
+P(menu_get_prompt,const char *,(struct menu *menu));
+P(menu_get_root_menu,struct menu *,(struct menu *menu));
+P(menu_get_parent_menu,struct menu *,(struct menu *menu));
+
+/* symbol.c */
+P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]);
+P(sym_change_count,int,);
+
+P(sym_lookup,struct symbol *,(const char *name, int isconst));
+P(sym_find,struct symbol *,(const char *name));
+P(sym_re_search,struct symbol **,(const char *pattern));
+P(sym_type_name,const char *,(enum symbol_type type));
+P(sym_calc_value,void,(struct symbol *sym));
+P(sym_get_type,enum symbol_type,(struct symbol *sym));
+P(sym_tristate_within_range,bool,(struct symbol *sym,tristate tri));
+P(sym_set_tristate_value,bool,(struct symbol *sym,tristate tri));
+P(sym_toggle_tristate_value,tristate,(struct symbol *sym));
+P(sym_string_valid,bool,(struct symbol *sym, const char *newval));
+P(sym_string_within_range,bool,(struct symbol *sym, const char *str));
+P(sym_set_string_value,bool,(struct symbol *sym, const char *newval));
+P(sym_is_changable,bool,(struct symbol *sym));
+P(sym_get_choice_prop,struct property *,(struct symbol *sym));
+P(sym_get_default_prop,struct property *,(struct symbol *sym));
+P(sym_get_string_value,const char *,(struct symbol *sym));
+
+P(prop_get_type_name,const char *,(enum prop_type type));
+
+/* expr.c */
+P(expr_compare_type,int,(enum expr_type t1, enum expr_type t2));
+P(expr_print,void,(struct expr *e, void (*fn)(void *, const char *), void *data, int prevtoken));

scripts/config/lxdialog/BIG.FAT.WARNING

@@ -0,0 +1,4 @@
+This is NOT the official version of dialog.  This version has been
+significantly modified from the original.  It is for use by the Linux
+kernel configuration script.  Please do not bother Savio Lam with 
+questions about this program.

scripts/config/lxdialog/Makefile

@@ -0,0 +1,20 @@
+# Makefile to build lxdialog package
+#
+
+all: lxdialog
+
+# Use reursively expanded variables so we do not call gcc unless
+# we really need to do so. (Do not call gcc as part of make mrproper)
+CFLAGS := $(shell sh check-lxdialog.sh -ccflags)
+LIBS := $(shell sh check-lxdialog.sh -ldflags gcc)
+ 
+always		:= $(hostprogs-y) dochecklxdialog
+
+%.o: %.c
+	$(CC) -c $(CFLAGS) -o $@ $<
+
+lxdialog: checklist.o menubox.o textbox.o yesno.o inputbox.o util.o lxdialog.o msgbox.o
+	$(CC) -o $@ $^ $(LIBS)
+
+clean:
+	rm -f *.o lxdialog

scripts/config/lxdialog/check-lxdialog.sh

@@ -0,0 +1,84 @@
+#!/bin/sh
+# Check ncurses compatibility
+
+# What library to link
+ldflags()
+{
+	$cc -print-file-name=libncursesw.so | grep -q /
+	if [ $? -eq 0 ]; then
+		echo '-lncursesw'
+		exit
+	fi
+	$cc -print-file-name=libncurses.so | grep -q /
+	if [ $? -eq 0 ]; then
+		echo '-lncurses'
+		exit
+	fi
+	$cc -print-file-name=libcurses.so | grep -q /
+	if [ $? -eq 0 ]; then
+		echo '-lcurses'
+		exit
+	fi
+	exit 1
+}
+
+# Where is ncurses.h?
+ccflags()
+{
+	if [ -f /usr/include/ncurses/ncurses.h ]; then
+		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses.h>"'
+	elif [ -f /usr/include/ncurses/curses.h ]; then
+		echo '-I/usr/include/ncurses -DCURSES_LOC="<ncurses/curses.h>"'
+	elif [ -f /usr/include/ncurses.h ]; then
+		echo '-DCURSES_LOC="<ncurses.h>"'
+	else
+		echo '-DCURSES_LOC="<curses.h>"'
+	fi
+}
+
+# Temp file, try to clean up after us
+tmp=.lxdialog.tmp
+trap "rm -f $tmp" 0 1 2 3 15
+
+# Check if we can link to ncurses
+check() {
+	echo "main() {}" | $cc -xc - -o $tmp 2> /dev/null
+	if [ $? != 0 ]; then
+		echo " *** Unable to find the ncurses libraries."          1>&2
+		echo " *** make menuconfig require the ncurses libraries"  1>&2
+		echo " *** "                                               1>&2
+		echo " *** Install ncurses (ncurses-devel) and try again"  1>&2
+		echo " *** "                                               1>&2
+		exit 1
+	fi
+}
+
+usage() {
+	printf "Usage: $0 [-check compiler options|-header|-library]\n"
+}
+
+if [ $# == 0 ]; then
+	usage
+	exit 1
+fi
+
+cc=""
+case "$1" in
+	"-check")
+		shift
+		cc="$@"
+		check
+		;;
+	"-ccflags")
+		ccflags
+		;;
+	"-ldflags")
+		shift
+		cc="$@"
+		ldflags
+		;;
+	"*")
+		usage
+		exit 1
+		;;
+esac

scripts/config/lxdialog/checklist.c

@@ -0,0 +1,334 @@
+/*
+ *  checklist.c -- implements the checklist box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *     Stuart Herbert - S.Herbert@sheffield.ac.uk: radiolist extension
+ *     Alessandro Rubini - rubini@ipvvis.unipv.it: merged the two
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+static int list_width, check_x, item_x;
+
+/*
+ * Print list item
+ */
+static void print_item(WINDOW * win, const char *item, int status, int choice,
+		       int selected)
+{
+	int i;
+
+	/* Clear 'residue' of last item */
+	wattrset(win, menubox_attr);
+	wmove(win, choice, 0);
+	for (i = 0; i < list_width; i++)
+		waddch(win, ' ');
+
+	wmove(win, choice, check_x);
+	wattrset(win, selected ? check_selected_attr : check_attr);
+	wprintw(win, "(%c)", status ? 'X' : ' ');
+
+	wattrset(win, selected ? tag_selected_attr : tag_attr);
+	mvwaddch(win, choice, item_x, item[0]);
+	wattrset(win, selected ? item_selected_attr : item_attr);
+	waddstr(win, (char *)item + 1);
+	if (selected) {
+		wmove(win, choice, check_x + 1);
+		wrefresh(win);
+	}
+}
+
+/*
+ * Print the scroll indicators.
+ */
+static void print_arrows(WINDOW * win, int choice, int item_no, int scroll,
+	     int y, int x, int height)
+{
+	wmove(win, y, x);
+
+	if (scroll > 0) {
+		wattrset(win, uarrow_attr);
+		waddch(win, ACS_UARROW);
+		waddstr(win, "(-)");
+	} else {
+		wattrset(win, menubox_attr);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+	}
+
+	y = y + height + 1;
+	wmove(win, y, x);
+
+	if ((height < item_no) && (scroll + choice < item_no - 1)) {
+		wattrset(win, darrow_attr);
+		waddch(win, ACS_DARROW);
+		waddstr(win, "(+)");
+	} else {
+		wattrset(win, menubox_border_attr);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+	}
+}
+
+/*
+ *  Display the termination buttons
+ */
+static void print_buttons(WINDOW * dialog, int height, int width, int selected)
+{
+	int x = width / 2 - 11;
+	int y = height - 2;
+
+	print_button(dialog, "Select", y, x, selected == 0);
+	print_button(dialog, " Help ", y, x + 14, selected == 1);
+
+	wmove(dialog, y, x + 1 + 14 * selected);
+	wrefresh(dialog);
+}
+
+/*
+ * Display a dialog box with a list of options that can be turned on or off
+ * in the style of radiolist (only one option turned on at a time).
+ */
+int dialog_checklist(const char *title, const char *prompt, int height,
+		     int width, int list_height, int item_no,
+		     const char *const *items)
+{
+	int i, x, y, box_x, box_y;
+	int key = 0, button = 0, choice = 0, scroll = 0, max_choice, *status;
+	WINDOW *dialog, *list;
+
+	/* Allocate space for storing item on/off status */
+	if ((status = malloc(sizeof(int) * item_no)) == NULL) {
+		endwin();
+		fprintf(stderr,
+			"\nCan't allocate memory in dialog_checklist().\n");
+		exit(-1);
+	}
+
+	/* Initializes status */
+	for (i = 0; i < item_no; i++) {
+		status[i] = !strcasecmp(items[i * 3 + 2], "on");
+		if ((!choice && status[i])
+		    || !strcasecmp(items[i * 3 + 2], "selected"))
+			choice = i + 1;
+	}
+	if (choice)
+		choice--;
+
+	max_choice = MIN(list_height, item_no);
+
+	/* center dialog box on screen */
+	x = (COLS - width) / 2;
+	y = (LINES - height) / 2;
+
+	draw_shadow(stdscr, y, x, height, width);
+
+	dialog = newwin(height, width, y, x);
+	keypad(dialog, TRUE);
+
+	draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+	wattrset(dialog, border_attr);
+	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+	for (i = 0; i < width - 2; i++)
+		waddch(dialog, ACS_HLINE);
+	wattrset(dialog, dialog_attr);
+	waddch(dialog, ACS_RTEE);
+
+	print_title(dialog, title, width);
+
+	wattrset(dialog, dialog_attr);
+	print_autowrap(dialog, prompt, width - 2, 1, 3);
+
+	list_width = width - 6;
+	box_y = height - list_height - 5;
+	box_x = (width - list_width) / 2 - 1;
+
+	/* create new window for the list */
+	list = subwin(dialog, list_height, list_width, y + box_y + 1,
+	              x + box_x + 1);
+
+	keypad(list, TRUE);
+
+	/* draw a box around the list items */
+	draw_box(dialog, box_y, box_x, list_height + 2, list_width + 2,
+	         menubox_border_attr, menubox_attr);
+
+	/* Find length of longest item in order to center checklist */
+	check_x = 0;
+	for (i = 0; i < item_no; i++)
+		check_x = MAX(check_x, +strlen(items[i * 3 + 1]) + 4);
+
+	check_x = (list_width - check_x) / 2;
+	item_x = check_x + 4;
+
+	if (choice >= list_height) {
+		scroll = choice - list_height + 1;
+		choice -= scroll;
+	}
+
+	/* Print the list */
+	for (i = 0; i < max_choice; i++) {
+		print_item(list, items[(scroll + i) * 3 + 1],
+			   status[i + scroll], i, i == choice);
+	}
+
+	print_arrows(dialog, choice, item_no, scroll,
+		     box_y, box_x + check_x + 5, list_height);
+
+	print_buttons(dialog, height, width, 0);
+
+	wnoutrefresh(list);
+	wnoutrefresh(dialog);
+	doupdate();
+
+	while (key != ESC) {
+		key = wgetch(dialog);
+
+		for (i = 0; i < max_choice; i++)
+			if (toupper(key) ==
+			    toupper(items[(scroll + i) * 3 + 1][0]))
+				break;
+
+		if (i < max_choice || key == KEY_UP || key == KEY_DOWN ||
+		    key == '+' || key == '-') {
+			if (key == KEY_UP || key == '-') {
+				if (!choice) {
+					if (!scroll)
+						continue;
+					/* Scroll list down */
+					if (list_height > 1) {
+						/* De-highlight current first item */
+						print_item(list, items[scroll * 3 + 1],
+							   status[scroll], 0, FALSE);
+						scrollok(list, TRUE);
+						wscrl(list, -1);
+						scrollok(list, FALSE);
+					}
+					scroll--;
+					print_item(list, items[scroll * 3 + 1], status[scroll], 0, TRUE);
+					wnoutrefresh(list);
+
+					print_arrows(dialog, choice, item_no,
+						     scroll, box_y, box_x + check_x + 5, list_height);
+
+					wrefresh(dialog);
+
+					continue;	/* wait for another key press */
+				} else
+					i = choice - 1;
+			} else if (key == KEY_DOWN || key == '+') {
+				if (choice == max_choice - 1) {
+					if (scroll + choice >= item_no - 1)
+						continue;
+					/* Scroll list up */
+					if (list_height > 1) {
+						/* De-highlight current last item before scrolling up */
+						print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
+							   status[scroll + max_choice - 1],
+							   max_choice - 1, FALSE);
+						scrollok(list, TRUE);
+						wscrl(list, 1);
+						scrollok(list, FALSE);
+					}
+					scroll++;
+					print_item(list, items[(scroll + max_choice - 1) * 3 + 1],
+						   status[scroll + max_choice - 1], max_choice - 1, TRUE);
+					wnoutrefresh(list);
+
+					print_arrows(dialog, choice, item_no,
+						     scroll, box_y, box_x + check_x + 5, list_height);
+
+					wrefresh(dialog);
+
+					continue;	/* wait for another key press */
+				} else
+					i = choice + 1;
+			}
+			if (i != choice) {
+				/* De-highlight current item */
+				print_item(list, items[(scroll + choice) * 3 + 1],
+					   status[scroll + choice], choice, FALSE);
+				/* Highlight new item */
+				choice = i;
+				print_item(list, items[(scroll + choice) * 3 + 1],
+					   status[scroll + choice], choice, TRUE);
+				wnoutrefresh(list);
+				wrefresh(dialog);
+			}
+			continue;	/* wait for another key press */
+		}
+		switch (key) {
+		case 'H':
+		case 'h':
+		case '?':
+			fprintf(stderr, "%s", items[(scroll + choice) * 3]);
+			delwin(dialog);
+			free(status);
+			return 1;
+		case TAB:
+		case KEY_LEFT:
+		case KEY_RIGHT:
+			button = ((key == KEY_LEFT ? --button : ++button) < 0)
+			    ? 1 : (button > 1 ? 0 : button);
+
+			print_buttons(dialog, height, width, button);
+			wrefresh(dialog);
+			break;
+		case 'S':
+		case 's':
+		case ' ':
+		case '\n':
+			if (!button) {
+				if (!status[scroll + choice]) {
+					for (i = 0; i < item_no; i++)
+						status[i] = 0;
+					status[scroll + choice] = 1;
+					for (i = 0; i < max_choice; i++)
+						print_item(list, items[(scroll + i) * 3 + 1],
+							   status[scroll + i], i, i == choice);
+				}
+				wnoutrefresh(list);
+				wrefresh(dialog);
+
+				for (i = 0; i < item_no; i++)
+					if (status[i])
+						fprintf(stderr, "%s", items[i * 3]);
+			} else
+				fprintf(stderr, "%s", items[(scroll + choice) * 3]);
+			delwin(dialog);
+			free(status);
+			return button;
+		case 'X':
+		case 'x':
+			key = ESC;
+		case ESC:
+			break;
+		}
+
+		/* Now, update everything... */
+		doupdate();
+	}
+
+	delwin(dialog);
+	free(status);
+	return -1;		/* ESC pressed */
+}

scripts/config/lxdialog/colors.h

@@ -0,0 +1,154 @@
+/*
+ *  colors.h -- color attribute definitions
+ *
+ *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ *   Default color definitions
+ *
+ *   *_FG = foreground
+ *   *_BG = background
+ *   *_HL = highlight?
+ */
+#define SCREEN_FG                    COLOR_CYAN
+#define SCREEN_BG                    COLOR_BLUE
+#define SCREEN_HL                    TRUE
+
+#define SHADOW_FG                    COLOR_BLACK
+#define SHADOW_BG                    COLOR_BLACK
+#define SHADOW_HL                    TRUE
+
+#define DIALOG_FG                    COLOR_BLACK
+#define DIALOG_BG                    COLOR_WHITE
+#define DIALOG_HL                    FALSE
+
+#define TITLE_FG                     COLOR_YELLOW
+#define TITLE_BG                     COLOR_WHITE
+#define TITLE_HL                     TRUE
+
+#define BORDER_FG                    COLOR_WHITE
+#define BORDER_BG                    COLOR_WHITE
+#define BORDER_HL                    TRUE
+
+#define BUTTON_ACTIVE_FG             COLOR_WHITE
+#define BUTTON_ACTIVE_BG             COLOR_BLUE
+#define BUTTON_ACTIVE_HL             TRUE
+
+#define BUTTON_INACTIVE_FG           COLOR_BLACK
+#define BUTTON_INACTIVE_BG           COLOR_WHITE
+#define BUTTON_INACTIVE_HL           FALSE
+
+#define BUTTON_KEY_ACTIVE_FG         COLOR_WHITE
+#define BUTTON_KEY_ACTIVE_BG         COLOR_BLUE
+#define BUTTON_KEY_ACTIVE_HL         TRUE
+
+#define BUTTON_KEY_INACTIVE_FG       COLOR_RED
+#define BUTTON_KEY_INACTIVE_BG       COLOR_WHITE
+#define BUTTON_KEY_INACTIVE_HL       FALSE
+
+#define BUTTON_LABEL_ACTIVE_FG       COLOR_YELLOW
+#define BUTTON_LABEL_ACTIVE_BG       COLOR_BLUE
+#define BUTTON_LABEL_ACTIVE_HL       TRUE
+
+#define BUTTON_LABEL_INACTIVE_FG     COLOR_BLACK
+#define BUTTON_LABEL_INACTIVE_BG     COLOR_WHITE
+#define BUTTON_LABEL_INACTIVE_HL     TRUE
+
+#define INPUTBOX_FG                  COLOR_BLACK
+#define INPUTBOX_BG                  COLOR_WHITE
+#define INPUTBOX_HL                  FALSE
+
+#define INPUTBOX_BORDER_FG           COLOR_BLACK
+#define INPUTBOX_BORDER_BG           COLOR_WHITE
+#define INPUTBOX_BORDER_HL           FALSE
+
+#define SEARCHBOX_FG                 COLOR_BLACK
+#define SEARCHBOX_BG                 COLOR_WHITE
+#define SEARCHBOX_HL                 FALSE
+
+#define SEARCHBOX_TITLE_FG           COLOR_YELLOW
+#define SEARCHBOX_TITLE_BG           COLOR_WHITE
+#define SEARCHBOX_TITLE_HL           TRUE
+
+#define SEARCHBOX_BORDER_FG          COLOR_WHITE
+#define SEARCHBOX_BORDER_BG          COLOR_WHITE
+#define SEARCHBOX_BORDER_HL          TRUE
+
+#define POSITION_INDICATOR_FG        COLOR_YELLOW
+#define POSITION_INDICATOR_BG        COLOR_WHITE
+#define POSITION_INDICATOR_HL        TRUE
+
+#define MENUBOX_FG                   COLOR_BLACK
+#define MENUBOX_BG                   COLOR_WHITE
+#define MENUBOX_HL                   FALSE
+
+#define MENUBOX_BORDER_FG            COLOR_WHITE
+#define MENUBOX_BORDER_BG            COLOR_WHITE
+#define MENUBOX_BORDER_HL            TRUE
+
+#define ITEM_FG                      COLOR_BLACK
+#define ITEM_BG                      COLOR_WHITE
+#define ITEM_HL                      FALSE
+
+#define ITEM_SELECTED_FG             COLOR_WHITE
+#define ITEM_SELECTED_BG             COLOR_BLUE
+#define ITEM_SELECTED_HL             TRUE
+
+#define TAG_FG                       COLOR_YELLOW
+#define TAG_BG                       COLOR_WHITE
+#define TAG_HL                       TRUE
+
+#define TAG_SELECTED_FG              COLOR_YELLOW
+#define TAG_SELECTED_BG              COLOR_BLUE
+#define TAG_SELECTED_HL              TRUE
+
+#define TAG_KEY_FG                   COLOR_YELLOW
+#define TAG_KEY_BG                   COLOR_WHITE
+#define TAG_KEY_HL                   TRUE
+
+#define TAG_KEY_SELECTED_FG          COLOR_YELLOW
+#define TAG_KEY_SELECTED_BG          COLOR_BLUE
+#define TAG_KEY_SELECTED_HL          TRUE
+
+#define CHECK_FG                     COLOR_BLACK
+#define CHECK_BG                     COLOR_WHITE
+#define CHECK_HL                     FALSE
+
+#define CHECK_SELECTED_FG            COLOR_WHITE
+#define CHECK_SELECTED_BG            COLOR_BLUE
+#define CHECK_SELECTED_HL            TRUE
+
+#define UARROW_FG                    COLOR_GREEN
+#define UARROW_BG                    COLOR_WHITE
+#define UARROW_HL                    TRUE
+
+#define DARROW_FG                    COLOR_GREEN
+#define DARROW_BG                    COLOR_WHITE
+#define DARROW_HL                    TRUE
+
+/* End of default color definitions */
+
+#define C_ATTR(x,y)                  ((x ? A_BOLD : 0) | COLOR_PAIR((y)))
+#define COLOR_NAME_LEN               10
+#define COLOR_COUNT                  8
+
+/*
+ * Global variables
+ */
+
+extern int color_table[][3];

scripts/config/lxdialog/dialog.h

@@ -0,0 +1,177 @@
+/*
+ *  dialog.h -- common declarations for all dialog modules
+ *
+ *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef __sun__
+#define CURS_MACROS
+#endif
+#include CURSES_LOC
+
+/*
+ * Colors in ncurses 1.9.9e do not work properly since foreground and
+ * background colors are OR'd rather than separately masked.  This version
+ * of dialog was hacked to work with ncurses 1.9.9e, making it incompatible
+ * with standard curses.  The simplest fix (to make this work with standard
+ * curses) uses the wbkgdset() function, not used in the original hack.
+ * Turn it off if we're building with 1.9.9e, since it just confuses things.
+ */
+#if defined(NCURSES_VERSION) && defined(_NEED_WRAP) && !defined(GCC_PRINTFLIKE)
+#define OLD_NCURSES 1
+#undef  wbkgdset
+#define wbkgdset(w,p)		/*nothing */
+#else
+#define OLD_NCURSES 0
+#endif
+
+#define TR(params) _tracef params
+
+#define ESC 27
+#define TAB 9
+#define MAX_LEN 2048
+#define BUF_SIZE (10*1024)
+#define MIN(x,y) (x < y ? x : y)
+#define MAX(x,y) (x > y ? x : y)
+
+#ifndef ACS_ULCORNER
+#define ACS_ULCORNER '+'
+#endif
+#ifndef ACS_LLCORNER
+#define ACS_LLCORNER '+'
+#endif
+#ifndef ACS_URCORNER
+#define ACS_URCORNER '+'
+#endif
+#ifndef ACS_LRCORNER
+#define ACS_LRCORNER '+'
+#endif
+#ifndef ACS_HLINE
+#define ACS_HLINE '-'
+#endif
+#ifndef ACS_VLINE
+#define ACS_VLINE '|'
+#endif
+#ifndef ACS_LTEE
+#define ACS_LTEE '+'
+#endif
+#ifndef ACS_RTEE
+#define ACS_RTEE '+'
+#endif
+#ifndef ACS_UARROW
+#define ACS_UARROW '^'
+#endif
+#ifndef ACS_DARROW
+#define ACS_DARROW 'v'
+#endif
+
+/*
+ * Attribute names
+ */
+#define screen_attr                   attributes[0]
+#define shadow_attr                   attributes[1]
+#define dialog_attr                   attributes[2]
+#define title_attr                    attributes[3]
+#define border_attr                   attributes[4]
+#define button_active_attr            attributes[5]
+#define button_inactive_attr          attributes[6]
+#define button_key_active_attr        attributes[7]
+#define button_key_inactive_attr      attributes[8]
+#define button_label_active_attr      attributes[9]
+#define button_label_inactive_attr    attributes[10]
+#define inputbox_attr                 attributes[11]
+#define inputbox_border_attr          attributes[12]
+#define searchbox_attr                attributes[13]
+#define searchbox_title_attr          attributes[14]
+#define searchbox_border_attr         attributes[15]
+#define position_indicator_attr       attributes[16]
+#define menubox_attr                  attributes[17]
+#define menubox_border_attr           attributes[18]
+#define item_attr                     attributes[19]
+#define item_selected_attr            attributes[20]
+#define tag_attr                      attributes[21]
+#define tag_selected_attr             attributes[22]
+#define tag_key_attr                  attributes[23]
+#define tag_key_selected_attr         attributes[24]
+#define check_attr                    attributes[25]
+#define check_selected_attr           attributes[26]
+#define uarrow_attr                   attributes[27]
+#define darrow_attr                   attributes[28]
+
+/* number of attributes */
+#define ATTRIBUTE_COUNT               29
+
+/*
+ * Global variables
+ */
+extern bool use_colors;
+extern bool use_shadow;
+
+extern chtype attributes[];
+
+extern const char *backtitle;
+
+/*
+ * Function prototypes
+ */
+extern void create_rc(const char *filename);
+extern int parse_rc(void);
+
+void init_dialog(void);
+void end_dialog(void);
+void attr_clear(WINDOW * win, int height, int width, chtype attr);
+void dialog_clear(void);
+void color_setup(void);
+void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x);
+void print_button(WINDOW * win, const char *label, int y, int x, int selected);
+void print_title(WINDOW *dialog, const char *title, int width);
+void draw_box(WINDOW * win, int y, int x, int height, int width, chtype box,
+	      chtype border);
+void draw_shadow(WINDOW * win, int y, int x, int height, int width);
+
+int first_alpha(const char *string, const char *exempt);
+int dialog_yesno(const char *title, const char *prompt, int height, int width);
+int dialog_msgbox(const char *title, const char *prompt, int height,
+		  int width, int pause);
+int dialog_textbox(const char *title, const char *file, int height, int width);
+int dialog_menu(const char *title, const char *prompt, int height, int width,
+		int menu_height, const char *choice, int item_no,
+		const char *const *items);
+int dialog_checklist(const char *title, const char *prompt, int height,
+		     int width, int list_height, int item_no,
+		     const char *const *items);
+extern char dialog_input_result[];
+int dialog_inputbox(const char *title, const char *prompt, int height,
+		    int width, const char *init);
+
+/*
+ * This is the base for fictitious keys, which activate
+ * the buttons.
+ *
+ * Mouse-generated keys are the following:
+ *   -- the first 32 are used as numbers, in addition to '0'-'9'
+ *   -- the lowercase are used to signal mouse-enter events (M_EVENT + 'o')
+ *   -- uppercase chars are used to invoke the button (M_EVENT + 'O')
+ */
+#define M_EVENT (KEY_MAX+1)

scripts/config/lxdialog/inputbox.c

@@ -0,0 +1,224 @@
+/*
+ *  inputbox.c -- implements the input box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+char dialog_input_result[MAX_LEN + 1];
+
+/*
+ *  Print the termination buttons
+ */
+static void print_buttons(WINDOW * dialog, int height, int width, int selected)
+{
+	int x = width / 2 - 11;
+	int y = height - 2;
+
+	print_button(dialog, "  Ok  ", y, x, selected == 0);
+	print_button(dialog, " Help ", y, x + 14, selected == 1);
+
+	wmove(dialog, y, x + 1 + 14 * selected);
+	wrefresh(dialog);
+}
+
+/*
+ * Display a dialog box for inputing a string
+ */
+int dialog_inputbox(const char *title, const char *prompt, int height, int width,
+                    const char *init)
+{
+	int i, x, y, box_y, box_x, box_width;
+	int input_x = 0, scroll = 0, key = 0, button = -1;
+	char *instr = dialog_input_result;
+	WINDOW *dialog;
+
+	/* center dialog box on screen */
+	x = (COLS - width) / 2;
+	y = (LINES - height) / 2;
+
+	draw_shadow(stdscr, y, x, height, width);
+
+	dialog = newwin(height, width, y, x);
+	keypad(dialog, TRUE);
+
+	draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+	wattrset(dialog, border_attr);
+	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+	for (i = 0; i < width - 2; i++)
+		waddch(dialog, ACS_HLINE);
+	wattrset(dialog, dialog_attr);
+	waddch(dialog, ACS_RTEE);
+
+	print_title(dialog, title, width);
+
+	wattrset(dialog, dialog_attr);
+	print_autowrap(dialog, prompt, width - 2, 1, 3);
+
+	/* Draw the input field box */
+	box_width = width - 6;
+	getyx(dialog, y, x);
+	box_y = y + 2;
+	box_x = (width - box_width) / 2;
+	draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2, border_attr, dialog_attr);
+
+	print_buttons(dialog, height, width, 0);
+
+	/* Set up the initial value */
+	wmove(dialog, box_y, box_x);
+	wattrset(dialog, inputbox_attr);
+
+	if (!init)
+		instr[0] = '\0';
+	else
+		strcpy(instr, init);
+
+	input_x = strlen(instr);
+
+	if (input_x >= box_width) {
+		scroll = input_x - box_width + 1;
+		input_x = box_width - 1;
+		for (i = 0; i < box_width - 1; i++)
+			waddch(dialog, instr[scroll + i]);
+	} else {
+		waddstr(dialog, instr);
+	}
+
+	wmove(dialog, box_y, box_x + input_x);
+
+	wrefresh(dialog);
+
+	while (key != ESC) {
+		key = wgetch(dialog);
+
+		if (button == -1) {	/* Input box selected */
+			switch (key) {
+			case TAB:
+			case KEY_UP:
+			case KEY_DOWN:
+				break;
+			case KEY_LEFT:
+				continue;
+			case KEY_RIGHT:
+				continue;
+			case KEY_BACKSPACE:
+			case 127:
+				if (input_x || scroll) {
+					wattrset(dialog, inputbox_attr);
+					if (!input_x) {
+						scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);
+						wmove(dialog, box_y, box_x);
+						for (i = 0; i < box_width; i++)
+							waddch(dialog,
+							       instr[scroll + input_x + i] ?
+							       instr[scroll + input_x + i] : ' ');
+						input_x = strlen(instr) - scroll;
+					} else
+						input_x--;
+					instr[scroll + input_x] = '\0';
+					mvwaddch(dialog, box_y, input_x + box_x, ' ');
+					wmove(dialog, box_y, input_x + box_x);
+					wrefresh(dialog);
+				}
+				continue;
+			default:
+				if (key < 0x100 && isprint(key)) {
+					if (scroll + input_x < MAX_LEN) {
+						wattrset(dialog, inputbox_attr);
+						instr[scroll + input_x] = key;
+						instr[scroll + input_x + 1] = '\0';
+						if (input_x == box_width - 1) {
+							scroll++;
+							wmove(dialog, box_y, box_x);
+							for (i = 0; i < box_width - 1; i++)
+								waddch(dialog, instr [scroll + i]);
+						} else {
+							wmove(dialog, box_y, input_x++ + box_x);
+							waddch(dialog, key);
+						}
+						wrefresh(dialog);
+					} else
+						flash();	/* Alarm user about overflow */
+					continue;
+				}
+			}
+		}
+		switch (key) {
+		case 'O':
+		case 'o':
+			delwin(dialog);
+			return 0;
+		case 'H':
+		case 'h':
+			delwin(dialog);
+			return 1;
+		case KEY_UP:
+		case KEY_LEFT:
+			switch (button) {
+			case -1:
+				button = 1;	/* Indicates "Cancel" button is selected */
+				print_buttons(dialog, height, width, 1);
+				break;
+			case 0:
+				button = -1;	/* Indicates input box is selected */
+				print_buttons(dialog, height, width, 0);
+				wmove(dialog, box_y, box_x + input_x);
+				wrefresh(dialog);
+				break;
+			case 1:
+				button = 0;	/* Indicates "OK" button is selected */
+				print_buttons(dialog, height, width, 0);
+				break;
+			}
+			break;
+		case TAB:
+		case KEY_DOWN:
+		case KEY_RIGHT:
+			switch (button) {
+			case -1:
+				button = 0;	/* Indicates "OK" button is selected */
+				print_buttons(dialog, height, width, 0);
+				break;
+			case 0:
+				button = 1;	/* Indicates "Cancel" button is selected */
+				print_buttons(dialog, height, width, 1);
+				break;
+			case 1:
+				button = -1;	/* Indicates input box is selected */
+				print_buttons(dialog, height, width, 0);
+				wmove(dialog, box_y, box_x + input_x);
+				wrefresh(dialog);
+				break;
+			}
+			break;
+		case ' ':
+		case '\n':
+			delwin(dialog);
+			return (button == -1 ? 0 : button);
+		case 'X':
+		case 'x':
+			key = ESC;
+		case ESC:
+			break;
+		}
+	}
+
+	delwin(dialog);
+	return -1;		/* ESC pressed */
+}

scripts/config/lxdialog/lxdialog.c

@@ -0,0 +1,204 @@
+/*
+ *  dialog - Display simple dialog boxes from shell scripts
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+static void Usage(const char *name);
+
+typedef int (jumperFn) (const char *title, int argc, const char *const *argv);
+
+struct Mode {
+	char *name;
+	int argmin, argmax, argmod;
+	jumperFn *jumper;
+};
+
+jumperFn j_menu, j_radiolist, j_yesno, j_textbox, j_inputbox;
+jumperFn j_msgbox, j_infobox;
+
+static struct Mode modes[] = {
+	{"--menu", 9, 0, 3, j_menu},
+	{"--radiolist", 9, 0, 3, j_radiolist},
+	{"--yesno", 5, 5, 1, j_yesno},
+	{"--textbox", 5, 5, 1, j_textbox},
+	{"--inputbox", 5, 6, 1, j_inputbox},
+	{"--msgbox", 5, 5, 1, j_msgbox},
+	{"--infobox", 5, 5, 1, j_infobox},
+	{NULL, 0, 0, 0, NULL}
+};
+
+static struct Mode *modePtr;
+
+#ifdef LOCALE
+#include <locale.h>
+#endif
+
+int main(int argc, const char *const *argv)
+{
+	int offset = 0, opt_clear = 0, end_common_opts = 0, retval;
+	const char *title = NULL;
+
+#ifdef LOCALE
+	(void)setlocale(LC_ALL, "");
+#endif
+
+#ifdef TRACE
+	trace(TRACE_CALLS | TRACE_UPDATE);
+#endif
+	if (argc < 2) {
+		Usage(argv[0]);
+		exit(-1);
+	}
+
+	while (offset < argc - 1 && !end_common_opts) {	/* Common options */
+		if (!strcmp(argv[offset + 1], "--title")) {
+			if (argc - offset < 3 || title != NULL) {
+				Usage(argv[0]);
+				exit(-1);
+			} else {
+				title = argv[offset + 2];
+				offset += 2;
+			}
+		} else if (!strcmp(argv[offset + 1], "--backtitle")) {
+			if (backtitle != NULL) {
+				Usage(argv[0]);
+				exit(-1);
+			} else {
+				backtitle = argv[offset + 2];
+				offset += 2;
+			}
+		} else if (!strcmp(argv[offset + 1], "--clear")) {
+			if (opt_clear) {	/* Hey, "--clear" can't appear twice! */
+				Usage(argv[0]);
+				exit(-1);
+			} else if (argc == 2) {	/* we only want to clear the screen */
+				init_dialog();
+				refresh();	/* init_dialog() will clear the screen for us */
+				end_dialog();
+				return 0;
+			} else {
+				opt_clear = 1;
+				offset++;
+			}
+		} else		/* no more common options */
+			end_common_opts = 1;
+	}
+
+	if (argc - 1 == offset) {	/* no more options */
+		Usage(argv[0]);
+		exit(-1);
+	}
+	/* use a table to look for the requested mode, to avoid code duplication */
+
+	for (modePtr = modes; modePtr->name; modePtr++)	/* look for the mode */
+		if (!strcmp(argv[offset + 1], modePtr->name))
+			break;
+
+	if (!modePtr->name)
+		Usage(argv[0]);
+	if (argc - offset < modePtr->argmin)
+		Usage(argv[0]);
+	if (modePtr->argmax && argc - offset > modePtr->argmax)
+		Usage(argv[0]);
+
+	init_dialog();
+	retval = (*(modePtr->jumper)) (title, argc - offset, argv + offset);
+
+	if (opt_clear) {	/* clear screen before exit */
+		attr_clear(stdscr, LINES, COLS, screen_attr);
+		refresh();
+	}
+	end_dialog();
+
+	exit(retval);
+}
+
+/*
+ * Print program usage
+ */
+static void Usage(const char *name)
+{
+	fprintf(stderr, "\
+\ndialog, by Savio Lam (lam836@cs.cuhk.hk).\
+\n  patched by Stuart Herbert (S.Herbert@shef.ac.uk)\
+\n  modified/gutted for use as a Linux kernel config tool by \
+\n  William Roadcap (roadcapw@cfw.com)\
+\n\
+\n* Display dialog boxes from shell scripts *\
+\n\
+\nUsage: %s --clear\
+\n       %s [--title <title>] [--backtitle <backtitle>] --clear <Box options>\
+\n\
+\nBox options:\
+\n\
+\n  --menu      <text> <height> <width> <menu height> <tag1> <item1>...\
+\n  --radiolist <text> <height> <width> <list height> <tag1> <item1> <status1>...\
+\n  --textbox   <file> <height> <width>\
+\n  --inputbox  <text> <height> <width> [<init>]\
+\n  --yesno     <text> <height> <width>\
+\n", name, name);
+	exit(-1);
+}
+
+/*
+ * These are the program jumpers
+ */
+
+int j_menu(const char *t, int ac, const char *const *av)
+{
+	return dialog_menu(t, av[2], atoi(av[3]), atoi(av[4]),
+			   atoi(av[5]), av[6], (ac - 6) / 2, av + 7);
+}
+
+int j_radiolist(const char *t, int ac, const char *const *av)
+{
+	return dialog_checklist(t, av[2], atoi(av[3]), atoi(av[4]),
+				atoi(av[5]), (ac - 6) / 3, av + 6);
+}
+
+int j_textbox(const char *t, int ac, const char *const *av)
+{
+	return dialog_textbox(t, av[2], atoi(av[3]), atoi(av[4]));
+}
+
+int j_yesno(const char *t, int ac, const char *const *av)
+{
+	return dialog_yesno(t, av[2], atoi(av[3]), atoi(av[4]));
+}
+
+int j_inputbox(const char *t, int ac, const char *const *av)
+{
+	int ret = dialog_inputbox(t, av[2], atoi(av[3]), atoi(av[4]),
+				  ac == 6 ? av[5] : (char *)NULL);
+	if (ret == 0)
+		fprintf(stderr, dialog_input_result);
+	return ret;
+}
+
+int j_msgbox(const char *t, int ac, const char *const *av)
+{
+	return dialog_msgbox(t, av[2], atoi(av[3]), atoi(av[4]), 1);
+}
+
+int j_infobox(const char *t, int ac, const char *const *av)
+{
+	return dialog_msgbox(t, av[2], atoi(av[3]), atoi(av[4]), 0);
+}

scripts/config/lxdialog/menubox.c

@@ -0,0 +1,425 @@
+/*
+ *  menubox.c -- implements the menu box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ *  Changes by Clifford Wolf (god@clifford.at)
+ *
+ *  [ 1998-06-13 ]
+ *
+ *    *)  A bugfix for the Page-Down problem
+ *
+ *    *)  Formerly when I used Page Down and Page Up, the cursor would be set 
+ *        to the first position in the menu box.  Now lxdialog is a bit
+ *        smarter and works more like other menu systems (just have a look at
+ *        it).
+ *
+ *    *)  Formerly if I selected something my scrolling would be broken because
+ *        lxdialog is re-invoked by the Menuconfig shell script, can't
+ *        remember the last scrolling position, and just sets it so that the
+ *        cursor is at the bottom of the box.  Now it writes the temporary file
+ *        lxdialog.scrltmp which contains this information. The file is
+ *        deleted by lxdialog if the user leaves a submenu or enters a new
+ *        one, but it would be nice if Menuconfig could make another "rm -f"
+ *        just to be sure.  Just try it out - you will recognise a difference!
+ *
+ *  [ 1998-06-14 ]
+ *
+ *    *)  Now lxdialog is crash-safe against broken "lxdialog.scrltmp" files
+ *        and menus change their size on the fly.
+ *
+ *    *)  If for some reason the last scrolling position is not saved by
+ *        lxdialog, it sets the scrolling so that the selected item is in the
+ *        middle of the menu box, not at the bottom.
+ *
+ * 02 January 1999, Michael Elizabeth Chastain (mec@shout.net)
+ * Reset 'scroll' to 0 if the value from lxdialog.scrltmp is bogus.
+ * This fixes a bug in Menuconfig where using ' ' to descend into menus
+ * would leave mis-synchronized lxdialog.scrltmp files lying around,
+ * fscanf would read in 'scroll', and eventually that value would get used.
+ */
+
+#include "dialog.h"
+
+#define ITEM_IDENT 1   /* Indent of menu entries. Fixed for all menus */
+static int menu_width;
+
+/*
+ * Print menu item
+ */
+static void do_print_item(WINDOW * win, const char *item, int choice,
+                          int selected, int hotkey)
+{
+	int j;
+	char *menu_item = malloc(menu_width + 1);
+
+	strncpy(menu_item, item, menu_width - ITEM_IDENT);
+	menu_item[menu_width] = 0;
+	j = first_alpha(menu_item, "YyNnMmHh");
+
+	/* Clear 'residue' of last item */
+	wattrset(win, menubox_attr);
+	wmove(win, choice, 0);
+#if OLD_NCURSES
+	{
+		int i;
+		for (i = 0; i < menu_width; i++)
+			waddch(win, ' ');
+	}
+#else
+	wclrtoeol(win);
+#endif
+	wattrset(win, selected ? item_selected_attr : item_attr);
+	mvwaddstr(win, choice, ITEM_IDENT, menu_item);
+	if (hotkey) {
+		wattrset(win, selected ? tag_key_selected_attr : tag_key_attr);
+		mvwaddch(win, choice, ITEM_IDENT + j, menu_item[j]);
+	}
+	if (selected) {
+		wmove(win, choice, ITEM_IDENT + 1);
+	}
+	free(menu_item);
+	wrefresh(win);
+}
+
+#define print_item(index, choice, selected) \
+do {\
+	int hotkey = (items[(index) * 2][0] != ':'); \
+	do_print_item(menu, items[(index) * 2 + 1], choice, selected, hotkey); \
+} while (0)
+
+/*
+ * Print the scroll indicators.
+ */
+static void print_arrows(WINDOW * win, int item_no, int scroll, int y, int x,
+			 int height)
+{
+	int cur_y, cur_x;
+
+	getyx(win, cur_y, cur_x);
+
+	wmove(win, y, x);
+
+	if (scroll > 0) {
+		wattrset(win, uarrow_attr);
+		waddch(win, ACS_UARROW);
+		waddstr(win, "(-)");
+	} else {
+		wattrset(win, menubox_attr);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+	}
+
+	y = y + height + 1;
+	wmove(win, y, x);
+	wrefresh(win);
+
+	if ((height < item_no) && (scroll + height < item_no)) {
+		wattrset(win, darrow_attr);
+		waddch(win, ACS_DARROW);
+		waddstr(win, "(+)");
+	} else {
+		wattrset(win, menubox_border_attr);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+		waddch(win, ACS_HLINE);
+	}
+
+	wmove(win, cur_y, cur_x);
+	wrefresh(win);
+}
+
+/*
+ * Display the termination buttons.
+ */
+static void print_buttons(WINDOW * win, int height, int width, int selected)
+{
+	int x = width / 2 - 16;
+	int y = height - 2;
+
+	print_button(win, "Select", y, x, selected == 0);
+	print_button(win, " Exit ", y, x + 12, selected == 1);
+	print_button(win, " Help ", y, x + 24, selected == 2);
+
+	wmove(win, y, x + 1 + 12 * selected);
+	wrefresh(win);
+}
+
+/* scroll up n lines (n may be negative) */
+static void do_scroll(WINDOW *win, int *scroll, int n)
+{
+	/* Scroll menu up */
+	scrollok(win, TRUE);
+	wscrl(win, n);
+	scrollok(win, FALSE);
+	*scroll = *scroll + n;
+	wrefresh(win);
+}
+
+/*
+ * Display a menu for choosing among a number of options
+ */
+int dialog_menu(const char *title, const char *prompt, int height, int width,
+                int menu_height, const char *current, int item_no,
+                const char *const *items)
+{
+	int i, j, x, y, box_x, box_y;
+	int key = 0, button = 0, scroll = 0, choice = 0;
+	int first_item =  0, max_choice;
+	WINDOW *dialog, *menu;
+	FILE *f;
+
+	max_choice = MIN(menu_height, item_no);
+
+	/* center dialog box on screen */
+	x = (COLS - width) / 2;
+	y = (LINES - height) / 2;
+
+	draw_shadow(stdscr, y, x, height, width);
+
+	dialog = newwin(height, width, y, x);
+	keypad(dialog, TRUE);
+
+	draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+	wattrset(dialog, border_attr);
+	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+	for (i = 0; i < width - 2; i++)
+		waddch(dialog, ACS_HLINE);
+	wattrset(dialog, dialog_attr);
+	wbkgdset(dialog, dialog_attr & A_COLOR);
+	waddch(dialog, ACS_RTEE);
+
+	print_title(dialog, title, width);
+
+	wattrset(dialog, dialog_attr);
+	print_autowrap(dialog, prompt, width - 2, 1, 3);
+
+	menu_width = width - 6;
+	box_y = height - menu_height - 5;
+	box_x = (width - menu_width) / 2 - 1;
+
+	/* create new window for the menu */
+	menu = subwin(dialog, menu_height, menu_width,
+		      y + box_y + 1, x + box_x + 1);
+	keypad(menu, TRUE);
+
+	/* draw a box around the menu items */
+	draw_box(dialog, box_y, box_x, menu_height + 2, menu_width + 2,
+		 menubox_border_attr, menubox_attr);
+
+	/* Set choice to default item */
+	for (i = 0; i < item_no; i++)
+		if (strcmp(current, items[i * 2]) == 0)
+			choice = i;
+
+	/* get the scroll info from the temp file */
+	if ((f = fopen("lxdialog.scrltmp", "r")) != NULL) {
+		if ((fscanf(f, "%d\n", &scroll) == 1) && (scroll <= choice) &&
+		    (scroll + max_choice > choice) && (scroll >= 0) &&
+		    (scroll + max_choice <= item_no)) {
+			first_item = scroll;
+			choice = choice - scroll;
+			fclose(f);
+		} else {
+			scroll = 0;
+			remove("lxdialog.scrltmp");
+			fclose(f);
+			f = NULL;
+		}
+	}
+	if ((choice >= max_choice) || (f == NULL && choice >= max_choice / 2)) {
+		if (choice >= item_no - max_choice / 2)
+			scroll = first_item = item_no - max_choice;
+		else
+			scroll = first_item = choice - max_choice / 2;
+		choice = choice - scroll;
+	}
+
+	/* Print the menu */
+	for (i = 0; i < max_choice; i++) {
+		print_item(first_item + i, i, i == choice);
+	}
+
+	wnoutrefresh(menu);
+
+	print_arrows(dialog, item_no, scroll,
+		     box_y, box_x + ITEM_IDENT + 1, menu_height);
+
+	print_buttons(dialog, height, width, 0);
+	wmove(menu, choice, ITEM_IDENT + 1);
+	wrefresh(menu);
+
+	while (key != ESC) {
+		key = wgetch(menu);
+
+		if (key < 256 && isalpha(key))
+			key = tolower(key);
+
+		if (strchr("ynmh", key))
+			i = max_choice;
+		else {
+			for (i = choice + 1; i < max_choice; i++) {
+				j = first_alpha(items[(scroll + i) * 2 + 1], "YyNnMmHh");
+				if (key == tolower(items[(scroll + i) * 2 + 1][j]))
+					break;
+			}
+			if (i == max_choice)
+				for (i = 0; i < max_choice; i++) {
+					j = first_alpha(items [(scroll + i) * 2 + 1], "YyNnMmHh");
+					if (key == tolower(items[(scroll + i) * 2 + 1][j]))
+						break;
+				}
+		}
+
+		if (i < max_choice ||
+		    key == KEY_UP || key == KEY_DOWN ||
+		    key == '-' || key == '+' ||
+		    key == KEY_PPAGE || key == KEY_NPAGE) {
+			/* Remove highligt of current item */
+			print_item(scroll + choice, choice, FALSE);
+
+			if (key == KEY_UP || key == '-') {
+				if (choice < 2 && scroll) {
+					/* Scroll menu down */
+					do_scroll(menu, &scroll, -1);
+
+					print_item(scroll, 0, FALSE);
+				} else
+					choice = MAX(choice - 1, 0);
+
+			} else if (key == KEY_DOWN || key == '+') {
+				print_item(scroll+choice, choice, FALSE);
+
+				if ((choice > max_choice - 3) &&
+				    (scroll + max_choice < item_no)) {
+					/* Scroll menu up */
+					do_scroll(menu, &scroll, 1);
+
+					print_item(scroll+max_choice - 1,
+						   max_choice - 1, FALSE);
+				} else
+					choice = MIN(choice + 1, max_choice - 1);
+
+			} else if (key == KEY_PPAGE) {
+				scrollok(menu, TRUE);
+				for (i = 0; (i < max_choice); i++) {
+					if (scroll > 0) {
+						do_scroll(menu, &scroll, -1);
+						print_item(scroll, 0, FALSE);
+					} else {
+						if (choice > 0)
+							choice--;
+					}
+				}
+
+			} else if (key == KEY_NPAGE) {
+				for (i = 0; (i < max_choice); i++) {
+					if (scroll + max_choice < item_no) {
+						do_scroll(menu, &scroll, 1);
+						print_item(scroll+max_choice-1,
+							   max_choice - 1, FALSE);
+					} else {
+						if (choice + 1 < max_choice)
+							choice++;
+					}
+				}
+			} else
+				choice = i;
+
+			print_item(scroll + choice, choice, TRUE);
+
+			print_arrows(dialog, item_no, scroll,
+				     box_y, box_x + ITEM_IDENT + 1, menu_height);
+
+			wnoutrefresh(dialog);
+			wrefresh(menu);
+
+			continue;	/* wait for another key press */
+		}
+
+		switch (key) {
+		case KEY_LEFT:
+		case TAB:
+		case KEY_RIGHT:
+			button = ((key == KEY_LEFT ? --button : ++button) < 0)
+			    ? 2 : (button > 2 ? 0 : button);
+
+			print_buttons(dialog, height, width, button);
+			wrefresh(menu);
+			break;
+		case ' ':
+		case 's':
+		case 'y':
+		case 'n':
+		case 'm':
+		case '/':
+			/* save scroll info */
+			if ((f = fopen("lxdialog.scrltmp", "w")) != NULL) {
+				fprintf(f, "%d\n", scroll);
+				fclose(f);
+			}
+			delwin(dialog);
+			fprintf(stderr, "%s\n", items[(scroll + choice) * 2]);
+			switch (key) {
+			case 's':
+				return 3;
+			case 'y':
+				return 3;
+			case 'n':
+				return 4;
+			case 'm':
+				return 5;
+			case ' ':
+				return 6;
+			case '/':
+				return 7;
+			}
+			return 0;
+		case 'h':
+		case '?':
+			button = 2;
+		case '\n':
+			delwin(dialog);
+			if (button == 2)
+				fprintf(stderr, "%s \"%s\"\n",
+					items[(scroll + choice) * 2],
+					items[(scroll + choice) * 2 + 1] +
+					first_alpha(items [(scroll + choice) * 2 + 1], ""));
+			else
+				fprintf(stderr, "%s\n",
+					items[(scroll + choice) * 2]);
+
+			remove("lxdialog.scrltmp");
+			return button;
+		case 'e':
+		case 'x':
+			key = ESC;
+		case ESC:
+			break;
+		}
+	}
+
+	delwin(dialog);
+	remove("lxdialog.scrltmp");
+	return -1;		/* ESC pressed */
+}

scripts/config/lxdialog/msgbox.c

@@ -0,0 +1,71 @@
+/*
+ *  msgbox.c -- implements the message box and info box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcapw@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+/*
+ * Display a message box. Program will pause and display an "OK" button
+ * if the parameter 'pause' is non-zero.
+ */
+int dialog_msgbox(const char *title, const char *prompt, int height, int width,
+                  int pause)
+{
+	int i, x, y, key = 0;
+	WINDOW *dialog;
+
+	/* center dialog box on screen */
+	x = (COLS - width) / 2;
+	y = (LINES - height) / 2;
+
+	draw_shadow(stdscr, y, x, height, width);
+
+	dialog = newwin(height, width, y, x);
+	keypad(dialog, TRUE);
+
+	draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+
+	print_title(dialog, title, width);
+
+	wattrset(dialog, dialog_attr);
+	print_autowrap(dialog, prompt, width - 2, 1, 2);
+
+	if (pause) {
+		wattrset(dialog, border_attr);
+		mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+		for (i = 0; i < width - 2; i++)
+			waddch(dialog, ACS_HLINE);
+		wattrset(dialog, dialog_attr);
+		waddch(dialog, ACS_RTEE);
+
+		print_button(dialog, "  Ok  ", height - 2, width / 2 - 4, TRUE);
+
+		wrefresh(dialog);
+		while (key != ESC && key != '\n' && key != ' ' &&
+		       key != 'O' && key != 'o' && key != 'X' && key != 'x')
+			key = wgetch(dialog);
+	} else {
+		key = '\n';
+		wrefresh(dialog);
+	}
+
+	delwin(dialog);
+	return key == ESC ? -1 : 0;
+}

scripts/config/lxdialog/textbox.c

@@ -0,0 +1,533 @@
+/*
+ *  textbox.c -- implements the text box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+static void back_lines(int n);
+static void print_page(WINDOW * win, int height, int width);
+static void print_line(WINDOW * win, int row, int width);
+static char *get_line(void);
+static void print_position(WINDOW * win, int height, int width);
+
+static int hscroll, fd, file_size, bytes_read;
+static int begin_reached = 1, end_reached, page_length;
+static char *buf, *page;
+
+/*
+ * Display text from a file in a dialog box.
+ */
+int dialog_textbox(const char *title, const char *file, int height, int width)
+{
+	int i, x, y, cur_x, cur_y, fpos, key = 0;
+	int passed_end;
+	char search_term[MAX_LEN + 1];
+	WINDOW *dialog, *text;
+
+	search_term[0] = '\0';	/* no search term entered yet */
+
+	/* Open input file for reading */
+	if ((fd = open(file, O_RDONLY)) == -1) {
+		endwin();
+		fprintf(stderr, "\nCan't open input file in dialog_textbox().\n");
+		exit(-1);
+	}
+	/* Get file size. Actually, 'file_size' is the real file size - 1,
+	   since it's only the last byte offset from the beginning */
+	if ((file_size = lseek(fd, 0, SEEK_END)) == -1) {
+		endwin();
+		fprintf(stderr, "\nError getting file size in dialog_textbox().\n");
+		exit(-1);
+	}
+	/* Restore file pointer to beginning of file after getting file size */
+	if (lseek(fd, 0, SEEK_SET) == -1) {
+		endwin();
+		fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
+		exit(-1);
+	}
+	/* Allocate space for read buffer */
+	if ((buf = malloc(BUF_SIZE + 1)) == NULL) {
+		endwin();
+		fprintf(stderr, "\nCan't allocate memory in dialog_textbox().\n");
+		exit(-1);
+	}
+	if ((bytes_read = read(fd, buf, BUF_SIZE)) == -1) {
+		endwin();
+		fprintf(stderr, "\nError reading file in dialog_textbox().\n");
+		exit(-1);
+	}
+	buf[bytes_read] = '\0';	/* mark end of valid data */
+	page = buf;		/* page is pointer to start of page to be displayed */
+
+	/* center dialog box on screen */
+	x = (COLS - width) / 2;
+	y = (LINES - height) / 2;
+
+	draw_shadow(stdscr, y, x, height, width);
+
+	dialog = newwin(height, width, y, x);
+	keypad(dialog, TRUE);
+
+	/* Create window for text region, used for scrolling text */
+	text = subwin(dialog, height - 4, width - 2, y + 1, x + 1);
+	wattrset(text, dialog_attr);
+	wbkgdset(text, dialog_attr & A_COLOR);
+
+	keypad(text, TRUE);
+
+	/* register the new window, along with its borders */
+	draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+
+	wattrset(dialog, border_attr);
+	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+	for (i = 0; i < width - 2; i++)
+		waddch(dialog, ACS_HLINE);
+	wattrset(dialog, dialog_attr);
+	wbkgdset(dialog, dialog_attr & A_COLOR);
+	waddch(dialog, ACS_RTEE);
+
+	print_title(dialog, title, width);
+
+	print_button(dialog, " Exit ", height - 2, width / 2 - 4, TRUE);
+	wnoutrefresh(dialog);
+	getyx(dialog, cur_y, cur_x);	/* Save cursor position */
+
+	/* Print first page of text */
+	attr_clear(text, height - 4, width - 2, dialog_attr);
+	print_page(text, height - 4, width - 2);
+	print_position(dialog, height, width);
+	wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
+	wrefresh(dialog);
+
+	while ((key != ESC) && (key != '\n')) {
+		key = wgetch(dialog);
+		switch (key) {
+		case 'E':	/* Exit */
+		case 'e':
+		case 'X':
+		case 'x':
+			delwin(dialog);
+			free(buf);
+			close(fd);
+			return 0;
+		case 'g':	/* First page */
+		case KEY_HOME:
+			if (!begin_reached) {
+				begin_reached = 1;
+				/* First page not in buffer? */
+				if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
+					endwin();
+					fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
+					exit(-1);
+				}
+				if (fpos > bytes_read) {	/* Yes, we have to read it in */
+					if (lseek(fd, 0, SEEK_SET) == -1) {
+						endwin();
+						fprintf(stderr, "\nError moving file pointer in "
+							        "dialog_textbox().\n");
+						exit(-1);
+					}
+					if ((bytes_read =
+					     read(fd, buf, BUF_SIZE)) == -1) {
+						endwin();
+						fprintf(stderr, "\nError reading file in dialog_textbox().\n");
+						exit(-1);
+					}
+					buf[bytes_read] = '\0';
+				}
+				page = buf;
+				print_page(text, height - 4, width - 2);
+				print_position(dialog, height, width);
+				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
+				wrefresh(dialog);
+			}
+			break;
+		case 'G':	/* Last page */
+		case KEY_END:
+
+			end_reached = 1;
+			/* Last page not in buffer? */
+			if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
+				endwin();
+				fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
+				exit(-1);
+			}
+			if (fpos < file_size) {	/* Yes, we have to read it in */
+				if (lseek(fd, -BUF_SIZE, SEEK_END) == -1) {
+					endwin();
+					fprintf(stderr, "\nError moving file pointer in dialog_textbox().\n");
+					exit(-1);
+				}
+				if ((bytes_read =
+				     read(fd, buf, BUF_SIZE)) == -1) {
+					endwin();
+					fprintf(stderr, "\nError reading file in dialog_textbox().\n");
+					exit(-1);
+				}
+				buf[bytes_read] = '\0';
+			}
+			page = buf + bytes_read;
+			back_lines(height - 4);
+			print_page(text, height - 4, width - 2);
+			print_position(dialog, height, width);
+			wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
+			wrefresh(dialog);
+			break;
+		case 'K':	/* Previous line */
+		case 'k':
+		case KEY_UP:
+			if (!begin_reached) {
+				back_lines(page_length + 1);
+
+				/* We don't call print_page() here but use scrolling to ensure
+				   faster screen update. However, 'end_reached' and
+				   'page_length' should still be updated, and 'page' should
+				   point to start of next page. This is done by calling
+				   get_line() in the following 'for' loop. */
+				scrollok(text, TRUE);
+				wscrl(text, -1);	/* Scroll text region down one line */
+				scrollok(text, FALSE);
+				page_length = 0;
+				passed_end = 0;
+				for (i = 0; i < height - 4; i++) {
+					if (!i) {
+						/* print first line of page */
+						print_line(text, 0, width - 2);
+						wnoutrefresh(text);
+					} else
+						/* Called to update 'end_reached' and 'page' */
+						get_line();
+					if (!passed_end)
+						page_length++;
+					if (end_reached && !passed_end)
+						passed_end = 1;
+				}
+
+				print_position(dialog, height, width);
+				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
+				wrefresh(dialog);
+			}
+			break;
+		case 'B':	/* Previous page */
+		case 'b':
+		case KEY_PPAGE:
+			if (begin_reached)
+				break;
+			back_lines(page_length + height - 4);
+			print_page(text, height - 4, width - 2);
+			print_position(dialog, height, width);
+			wmove(dialog, cur_y, cur_x);
+			wrefresh(dialog);
+			break;
+		case 'J':	/* Next line */
+		case 'j':
+		case KEY_DOWN:
+			if (!end_reached) {
+				begin_reached = 0;
+				scrollok(text, TRUE);
+				scroll(text);	/* Scroll text region up one line */
+				scrollok(text, FALSE);
+				print_line(text, height - 5, width - 2);
+				wnoutrefresh(text);
+				print_position(dialog, height, width);
+				wmove(dialog, cur_y, cur_x);	/* Restore cursor position */
+				wrefresh(dialog);
+			}
+			break;
+		case KEY_NPAGE:	/* Next page */
+		case ' ':
+			if (end_reached)
+				break;
+
+			begin_reached = 0;
+			print_page(text, height - 4, width - 2);
+			print_position(dialog, height, width);
+			wmove(dialog, cur_y, cur_x);
+			wrefresh(dialog);
+			break;
+		case '0':	/* Beginning of line */
+		case 'H':	/* Scroll left */
+		case 'h':
+		case KEY_LEFT:
+			if (hscroll <= 0)
+				break;
+
+			if (key == '0')
+				hscroll = 0;
+			else
+				hscroll--;
+			/* Reprint current page to scroll horizontally */
+			back_lines(page_length);
+			print_page(text, height - 4, width - 2);
+			wmove(dialog, cur_y, cur_x);
+			wrefresh(dialog);
+			break;
+		case 'L':	/* Scroll right */
+		case 'l':
+		case KEY_RIGHT:
+			if (hscroll >= MAX_LEN)
+				break;
+			hscroll++;
+			/* Reprint current page to scroll horizontally */
+			back_lines(page_length);
+			print_page(text, height - 4, width - 2);
+			wmove(dialog, cur_y, cur_x);
+			wrefresh(dialog);
+			break;
+		case ESC:
+			break;
+		}
+	}
+
+	delwin(dialog);
+	free(buf);
+	close(fd);
+	return -1;		/* ESC pressed */
+}
+
+/*
+ * Go back 'n' lines in text file. Called by dialog_textbox().
+ * 'page' will be updated to point to the desired line in 'buf'.
+ */
+static void back_lines(int n)
+{
+	int i, fpos;
+
+	begin_reached = 0;
+	/* We have to distinguish between end_reached and !end_reached
+	   since at end of file, the line is not ended by a '\n'.
+	   The code inside 'if' basically does a '--page' to move one
+	   character backward so as to skip '\n' of the previous line */
+	if (!end_reached) {
+		/* Either beginning of buffer or beginning of file reached? */
+		if (page == buf) {
+			if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
+				endwin();
+				fprintf(stderr, "\nError moving file pointer in "
+					        "back_lines().\n");
+				exit(-1);
+			}
+			if (fpos > bytes_read) {	/* Not beginning of file yet */
+				/* We've reached beginning of buffer, but not beginning of
+				   file yet, so read previous part of file into buffer.
+				   Note that we only move backward for BUF_SIZE/2 bytes,
+				   but not BUF_SIZE bytes to avoid re-reading again in
+				   print_page() later */
+				/* Really possible to move backward BUF_SIZE/2 bytes? */
+				if (fpos < BUF_SIZE / 2 + bytes_read) {
+					/* No, move less then */
+					if (lseek(fd, 0, SEEK_SET) == -1) {
+						endwin();
+						fprintf(stderr, "\nError moving file pointer in "
+						                "back_lines().\n");
+						exit(-1);
+					}
+					page = buf + fpos - bytes_read;
+				} else {	/* Move backward BUF_SIZE/2 bytes */
+					if (lseek (fd, -(BUF_SIZE / 2 + bytes_read), SEEK_CUR) == -1) {
+						endwin();
+						fprintf(stderr, "\nError moving file pointer "
+						                "in back_lines().\n");
+						exit(-1);
+					}
+					page = buf + BUF_SIZE / 2;
+				}
+				if ((bytes_read =
+				     read(fd, buf, BUF_SIZE)) == -1) {
+					endwin();
+					fprintf(stderr, "\nError reading file in back_lines().\n");
+					exit(-1);
+				}
+				buf[bytes_read] = '\0';
+			} else {	/* Beginning of file reached */
+				begin_reached = 1;
+				return;
+			}
+		}
+		if (*(--page) != '\n') {	/* '--page' here */
+			/* Something's wrong... */
+			endwin();
+			fprintf(stderr, "\nInternal error in back_lines().\n");
+			exit(-1);
+		}
+	}
+	/* Go back 'n' lines */
+	for (i = 0; i < n; i++)
+		do {
+			if (page == buf) {
+				if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
+					endwin();
+					fprintf(stderr, "\nError moving file pointer in back_lines().\n");
+					exit(-1);
+				}
+				if (fpos > bytes_read) {
+					/* Really possible to move backward BUF_SIZE/2 bytes? */
+					if (fpos < BUF_SIZE / 2 + bytes_read) {
+						/* No, move less then */
+						if (lseek(fd, 0, SEEK_SET) == -1) {
+							endwin();
+							fprintf(stderr, "\nError moving file pointer "
+							                "in back_lines().\n");
+							exit(-1);
+						}
+						page = buf + fpos - bytes_read;
+					} else {	/* Move backward BUF_SIZE/2 bytes */
+						if (lseek (fd, -(BUF_SIZE / 2 + bytes_read), SEEK_CUR) == -1) {
+							endwin();
+							fprintf(stderr, "\nError moving file pointer"
+							                " in back_lines().\n");
+							exit(-1);
+						}
+						page = buf + BUF_SIZE / 2;
+					}
+					if ((bytes_read =
+					     read(fd, buf, BUF_SIZE)) == -1) {
+						endwin();
+						fprintf(stderr, "\nError reading file in "
+						                "back_lines().\n");
+						exit(-1);
+					}
+					buf[bytes_read] = '\0';
+				} else {	/* Beginning of file reached */
+					begin_reached = 1;
+					return;
+				}
+			}
+		} while (*(--page) != '\n');
+	page++;
+}
+
+/*
+ * Print a new page of text. Called by dialog_textbox().
+ */
+static void print_page(WINDOW * win, int height, int width)
+{
+	int i, passed_end = 0;
+
+	page_length = 0;
+	for (i = 0; i < height; i++) {
+		print_line(win, i, width);
+		if (!passed_end)
+			page_length++;
+		if (end_reached && !passed_end)
+			passed_end = 1;
+	}
+	wnoutrefresh(win);
+}
+
+/*
+ * Print a new line of text. Called by dialog_textbox() and print_page().
+ */
+static void print_line(WINDOW * win, int row, int width)
+{
+	int y, x;
+	char *line;
+
+	line = get_line();
+	line += MIN(strlen(line), hscroll);	/* Scroll horizontally */
+	wmove(win, row, 0);	/* move cursor to correct line */
+	waddch(win, ' ');
+	waddnstr(win, line, MIN(strlen(line), width - 2));
+
+	getyx(win, y, x);
+	/* Clear 'residue' of previous line */
+#if OLD_NCURSES
+	{
+		int i;
+		for (i = 0; i < width - x; i++)
+			waddch(win, ' ');
+	}
+#else
+	wclrtoeol(win);
+#endif
+}
+
+/*
+ * Return current line of text. Called by dialog_textbox() and print_line().
+ * 'page' should point to start of current line before calling, and will be
+ * updated to point to start of next line.
+ */
+static char *get_line(void)
+{
+	int i = 0, fpos;
+	static char line[MAX_LEN + 1];
+
+	end_reached = 0;
+	while (*page != '\n') {
+		if (*page == '\0') {
+			/* Either end of file or end of buffer reached */
+			if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
+				endwin();
+				fprintf(stderr, "\nError moving file pointer in "
+				                "get_line().\n");
+				exit(-1);
+			}
+			if (fpos < file_size) {	/* Not end of file yet */
+				/* We've reached end of buffer, but not end of file yet,
+				   so read next part of file into buffer */
+				if ((bytes_read =
+				     read(fd, buf, BUF_SIZE)) == -1) {
+					endwin();
+					fprintf(stderr, "\nError reading file in get_line().\n");
+					exit(-1);
+				}
+				buf[bytes_read] = '\0';
+				page = buf;
+			} else {
+				if (!end_reached)
+					end_reached = 1;
+				break;
+			}
+		} else if (i < MAX_LEN)
+			line[i++] = *(page++);
+		else {
+			/* Truncate lines longer than MAX_LEN characters */
+			if (i == MAX_LEN)
+				line[i++] = '\0';
+			page++;
+		}
+	}
+	if (i <= MAX_LEN)
+		line[i] = '\0';
+	if (!end_reached)
+		page++;		/* move pass '\n' */
+
+	return line;
+}
+
+/*
+ * Print current position
+ */
+static void print_position(WINDOW * win, int height, int width)
+{
+	int fpos, percent;
+
+	if ((fpos = lseek(fd, 0, SEEK_CUR)) == -1) {
+		endwin();
+		fprintf(stderr, "\nError moving file pointer in print_position().\n");
+		exit(-1);
+	}
+	wattrset(win, position_indicator_attr);
+	wbkgdset(win, position_indicator_attr & A_COLOR);
+	percent = !file_size ?
+	    100 : ((fpos - bytes_read + page - buf) * 100) / file_size;
+	wmove(win, height - 3, width - 9);
+	wprintw(win, "(%3d%%)", percent);
+}

scripts/config/lxdialog/util.c

@@ -0,0 +1,362 @@
+/*
+ *  util.c
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+/* use colors by default? */
+bool use_colors = 1;
+
+const char *backtitle = NULL;
+
+/*
+ * Attribute values, default is for mono display
+ */
+chtype attributes[] = {
+	A_NORMAL,		/* screen_attr */
+	A_NORMAL,		/* shadow_attr */
+	A_NORMAL,		/* dialog_attr */
+	A_BOLD,			/* title_attr */
+	A_NORMAL,		/* border_attr */
+	A_REVERSE,		/* button_active_attr */
+	A_DIM,			/* button_inactive_attr */
+	A_REVERSE,		/* button_key_active_attr */
+	A_BOLD,			/* button_key_inactive_attr */
+	A_REVERSE,		/* button_label_active_attr */
+	A_NORMAL,		/* button_label_inactive_attr */
+	A_NORMAL,		/* inputbox_attr */
+	A_NORMAL,		/* inputbox_border_attr */
+	A_NORMAL,		/* searchbox_attr */
+	A_BOLD,			/* searchbox_title_attr */
+	A_NORMAL,		/* searchbox_border_attr */
+	A_BOLD,			/* position_indicator_attr */
+	A_NORMAL,		/* menubox_attr */
+	A_NORMAL,		/* menubox_border_attr */
+	A_NORMAL,		/* item_attr */
+	A_REVERSE,		/* item_selected_attr */
+	A_BOLD,			/* tag_attr */
+	A_REVERSE,		/* tag_selected_attr */
+	A_BOLD,			/* tag_key_attr */
+	A_REVERSE,		/* tag_key_selected_attr */
+	A_BOLD,			/* check_attr */
+	A_REVERSE,		/* check_selected_attr */
+	A_BOLD,			/* uarrow_attr */
+	A_BOLD			/* darrow_attr */
+};
+
+#include "colors.h"
+
+/*
+ * Table of color values
+ */
+int color_table[][3] = {
+	{SCREEN_FG, SCREEN_BG, SCREEN_HL},
+	{SHADOW_FG, SHADOW_BG, SHADOW_HL},
+	{DIALOG_FG, DIALOG_BG, DIALOG_HL},
+	{TITLE_FG, TITLE_BG, TITLE_HL},
+	{BORDER_FG, BORDER_BG, BORDER_HL},
+	{BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL},
+	{BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL},
+	{BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL},
+	{BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG,
+	 BUTTON_KEY_INACTIVE_HL},
+	{BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG,
+	 BUTTON_LABEL_ACTIVE_HL},
+	{BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG,
+	 BUTTON_LABEL_INACTIVE_HL},
+	{INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL},
+	{INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL},
+	{SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL},
+	{SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL},
+	{SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL},
+	{POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL},
+	{MENUBOX_FG, MENUBOX_BG, MENUBOX_HL},
+	{MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL},
+	{ITEM_FG, ITEM_BG, ITEM_HL},
+	{ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL},
+	{TAG_FG, TAG_BG, TAG_HL},
+	{TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL},
+	{TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL},
+	{TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL},
+	{CHECK_FG, CHECK_BG, CHECK_HL},
+	{CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL},
+	{UARROW_FG, UARROW_BG, UARROW_HL},
+	{DARROW_FG, DARROW_BG, DARROW_HL},
+};				/* color_table */
+
+/*
+ * Set window to attribute 'attr'
+ */
+void attr_clear(WINDOW * win, int height, int width, chtype attr)
+{
+	int i, j;
+
+	wattrset(win, attr);
+	for (i = 0; i < height; i++) {
+		wmove(win, i, 0);
+		for (j = 0; j < width; j++)
+			waddch(win, ' ');
+	}
+	touchwin(win);
+}
+
+void dialog_clear(void)
+{
+	attr_clear(stdscr, LINES, COLS, screen_attr);
+	/* Display background title if it exists ... - SLH */
+	if (backtitle != NULL) {
+		int i;
+
+		wattrset(stdscr, screen_attr);
+		mvwaddstr(stdscr, 0, 1, (char *)backtitle);
+		wmove(stdscr, 1, 1);
+		for (i = 1; i < COLS - 1; i++)
+			waddch(stdscr, ACS_HLINE);
+	}
+	wnoutrefresh(stdscr);
+}
+
+/*
+ * Do some initialization for dialog
+ */
+void init_dialog(void)
+{
+	initscr();		/* Init curses */
+	keypad(stdscr, TRUE);
+	cbreak();
+	noecho();
+
+	if (use_colors)		/* Set up colors */
+		color_setup();
+
+	dialog_clear();
+}
+
+/*
+ * Setup for color display
+ */
+void color_setup(void)
+{
+	int i;
+
+	if (has_colors()) {	/* Terminal supports color? */
+		start_color();
+
+		/* Initialize color pairs */
+		for (i = 0; i < ATTRIBUTE_COUNT; i++)
+			init_pair(i + 1, color_table[i][0], color_table[i][1]);
+
+		/* Setup color attributes */
+		for (i = 0; i < ATTRIBUTE_COUNT; i++)
+			attributes[i] = C_ATTR(color_table[i][2], i + 1);
+	}
+}
+
+/*
+ * End using dialog functions.
+ */
+void end_dialog(void)
+{
+	endwin();
+}
+
+/* Print the title of the dialog. Center the title and truncate
+ * tile if wider than dialog (- 2 chars).
+ **/
+void print_title(WINDOW *dialog, const char *title, int width)
+{
+	if (title) {
+		int tlen = MIN(width - 2, strlen(title));
+		wattrset(dialog, title_attr);
+		mvwaddch(dialog, 0, (width - tlen) / 2 - 1, ' ');
+		mvwaddnstr(dialog, 0, (width - tlen)/2, title, tlen);
+		waddch(dialog, ' ');
+	}
+}
+
+/*
+ * Print a string of text in a window, automatically wrap around to the
+ * next line if the string is too long to fit on one line. Newline
+ * characters '\n' are replaced by spaces.  We start on a new line
+ * if there is no room for at least 4 nonblanks following a double-space.
+ */
+void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
+{
+	int newl, cur_x, cur_y;
+	int i, prompt_len, room, wlen;
+	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
+
+	strcpy(tempstr, prompt);
+
+	prompt_len = strlen(tempstr);
+
+	/*
+	 * Remove newlines
+	 */
+	for (i = 0; i < prompt_len; i++) {
+		if (tempstr[i] == '\n')
+			tempstr[i] = ' ';
+	}
+
+	if (prompt_len <= width - x * 2) {	/* If prompt is short */
+		wmove(win, y, (width - prompt_len) / 2);
+		waddstr(win, tempstr);
+	} else {
+		cur_x = x;
+		cur_y = y;
+		newl = 1;
+		word = tempstr;
+		while (word && *word) {
+			sp = index(word, ' ');
+			if (sp)
+				*sp++ = 0;
+
+			/* Wrap to next line if either the word does not fit,
+			   or it is the first word of a new sentence, and it is
+			   short, and the next word does not fit. */
+			room = width - cur_x;
+			wlen = strlen(word);
+			if (wlen > room ||
+			    (newl && wlen < 4 && sp
+			     && wlen + 1 + strlen(sp) > room
+			     && (!(sp2 = index(sp, ' '))
+				 || wlen + 1 + (sp2 - sp) > room))) {
+				cur_y++;
+				cur_x = x;
+			}
+			wmove(win, cur_y, cur_x);
+			waddstr(win, word);
+			getyx(win, cur_y, cur_x);
+			cur_x++;
+			if (sp && *sp == ' ') {
+				cur_x++;	/* double space */
+				while (*++sp == ' ') ;
+				newl = 1;
+			} else
+				newl = 0;
+			word = sp;
+		}
+	}
+}
+
+/*
+ * Print a button
+ */
+void print_button(WINDOW * win, const char *label, int y, int x, int selected)
+{
+	int i, temp;
+
+	wmove(win, y, x);
+	wattrset(win, selected ? button_active_attr : button_inactive_attr);
+	waddstr(win, "<");
+	temp = strspn(label, " ");
+	label += temp;
+	wattrset(win, selected ? button_label_active_attr
+		 : button_label_inactive_attr);
+	for (i = 0; i < temp; i++)
+		waddch(win, ' ');
+	wattrset(win, selected ? button_key_active_attr
+		 : button_key_inactive_attr);
+	waddch(win, label[0]);
+	wattrset(win, selected ? button_label_active_attr
+		 : button_label_inactive_attr);
+	waddstr(win, (char *)label + 1);
+	wattrset(win, selected ? button_active_attr : button_inactive_attr);
+	waddstr(win, ">");
+	wmove(win, y, x + temp + 1);
+}
+
+/*
+ * Draw a rectangular box with line drawing characters
+ */
+void
+draw_box(WINDOW * win, int y, int x, int height, int width,
+	 chtype box, chtype border)
+{
+	int i, j;
+
+	wattrset(win, 0);
+	for (i = 0; i < height; i++) {
+		wmove(win, y + i, x);
+		for (j = 0; j < width; j++)
+			if (!i && !j)
+				waddch(win, border | ACS_ULCORNER);
+			else if (i == height - 1 && !j)
+				waddch(win, border | ACS_LLCORNER);
+			else if (!i && j == width - 1)
+				waddch(win, box | ACS_URCORNER);
+			else if (i == height - 1 && j == width - 1)
+				waddch(win, box | ACS_LRCORNER);
+			else if (!i)
+				waddch(win, border | ACS_HLINE);
+			else if (i == height - 1)
+				waddch(win, box | ACS_HLINE);
+			else if (!j)
+				waddch(win, border | ACS_VLINE);
+			else if (j == width - 1)
+				waddch(win, box | ACS_VLINE);
+			else
+				waddch(win, box | ' ');
+	}
+}
+
+/*
+ * Draw shadows along the right and bottom edge to give a more 3D look
+ * to the boxes
+ */
+void draw_shadow(WINDOW * win, int y, int x, int height, int width)
+{
+	int i;
+
+	if (has_colors()) {	/* Whether terminal supports color? */
+		wattrset(win, shadow_attr);
+		wmove(win, y + height, x + 2);
+		for (i = 0; i < width; i++)
+			waddch(win, winch(win) & A_CHARTEXT);
+		for (i = y + 1; i < y + height + 1; i++) {
+			wmove(win, i, x + width);
+			waddch(win, winch(win) & A_CHARTEXT);
+			waddch(win, winch(win) & A_CHARTEXT);
+		}
+		wnoutrefresh(win);
+	}
+}
+
+/*
+ *  Return the position of the first alphabetic character in a string.
+ */
+int first_alpha(const char *string, const char *exempt)
+{
+	int i, in_paren = 0, c;
+
+	for (i = 0; i < strlen(string); i++) {
+		c = tolower(string[i]);
+
+		if (strchr("<[(", c))
+			++in_paren;
+		if (strchr(">])", c) && in_paren > 0)
+			--in_paren;
+
+		if ((!in_paren) && isalpha(c) && strchr(exempt, c) == 0)
+			return i;
+	}
+
+	return 0;
+}

scripts/config/lxdialog/yesno.c

@@ -0,0 +1,102 @@
+/*
+ *  yesno.c -- implements the yes/no box
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+/*
+ * Display termination buttons
+ */
+static void print_buttons(WINDOW * dialog, int height, int width, int selected)
+{
+	int x = width / 2 - 10;
+	int y = height - 2;
+
+	print_button(dialog, " Yes ", y, x, selected == 0);
+	print_button(dialog, "  No  ", y, x + 13, selected == 1);
+
+	wmove(dialog, y, x + 1 + 13 * selected);
+	wrefresh(dialog);
+}
+
+/*
+ * Display a dialog box with two buttons - Yes and No
+ */
+int dialog_yesno(const char *title, const char *prompt, int height, int width)
+{
+	int i, x, y, key = 0, button = 0;
+	WINDOW *dialog;
+
+	/* center dialog box on screen */
+	x = (COLS - width) / 2;
+	y = (LINES - height) / 2;
+
+	draw_shadow(stdscr, y, x, height, width);
+
+	dialog = newwin(height, width, y, x);
+	keypad(dialog, TRUE);
+
+	draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
+	wattrset(dialog, border_attr);
+	mvwaddch(dialog, height - 3, 0, ACS_LTEE);
+	for (i = 0; i < width - 2; i++)
+		waddch(dialog, ACS_HLINE);
+	wattrset(dialog, dialog_attr);
+	waddch(dialog, ACS_RTEE);
+
+	print_title(dialog, title, width);
+
+	wattrset(dialog, dialog_attr);
+	print_autowrap(dialog, prompt, width - 2, 1, 3);
+
+	print_buttons(dialog, height, width, 0);
+
+	while (key != ESC) {
+		key = wgetch(dialog);
+		switch (key) {
+		case 'Y':
+		case 'y':
+			delwin(dialog);
+			return 0;
+		case 'N':
+		case 'n':
+			delwin(dialog);
+			return 1;
+
+		case TAB:
+		case KEY_LEFT:
+		case KEY_RIGHT:
+			button = ((key == KEY_LEFT ? --button : ++button) < 0) ? 1 : (button > 1 ? 0 : button);
+
+			print_buttons(dialog, height, width, button);
+			wrefresh(dialog);
+			break;
+		case ' ':
+		case '\n':
+			delwin(dialog);
+			return button;
+		case ESC:
+			break;
+		}
+	}
+
+	delwin(dialog);
+	return -1;		/* ESC pressed */
+}

scripts/config/menu.c

@@ -0,0 +1,397 @@
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+struct menu rootmenu;
+static struct menu **last_entry_ptr;
+
+struct file *file_list;
+struct file *current_file;
+
+static 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 = malloc(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;
+}
+
+void menu_end_entry(void)
+{
+}
+
+struct menu *menu_add_menu(void)
+{
+	menu_end_entry();
+	last_entry_ptr = &current_entry->list;
+	return current_menu = current_entry;
+}
+
+void menu_end_menu(void)
+{
+	last_entry_ptr = &current_menu->next;
+	current_menu = current_menu->parent;
+}
+
+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'\n",
+	    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->text = prompt;
+	prop->expr = expr;
+	prop->visible.expr = menu_check_dep(dep);
+
+	if (prompt) {
+		if (current_entry->prompt)
+			menu_warn(current_entry, "prompt redefined\n");
+		current_entry->prompt = prop;
+	}
+
+	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_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);
+}
+
+static int menu_range_valid_sym(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));
+}
+
+void sym_check_prop(struct symbol *sym)
+{
+	struct property *prop;
+	struct symbol *sym2;
+	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 '%'"
+				    " must be a single symbol", sym->name);
+			break;
+		case P_SELECT:
+			sym2 = prop_get_symbol(prop);
+			if (sym->type != S_BOOLEAN && sym->type != S_TRISTATE)
+				prop_warn(prop,
+				    "config symbol '%s' uses select, but is "
+				    "not boolean or tristate", sym->name);
+			else if (sym2->type == S_UNKNOWN)
+				prop_warn(prop,
+				    "'select' used by config symbol '%s' "
+				    "refer to undefined symbol '%s'",
+				    sym->name, sym2->name);
+			else if (sym2->type != S_BOOLEAN && sym2->type != S_TRISTATE)
+				prop_warn(prop,
+				    "'%s' has wrong type. 'select' only "
+				    "accept arguments of boolean and "
+				    "tristate type", sym2->name);
+			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_range_valid_sym(sym, prop->expr->left.sym) ||
+			    !menu_range_valid_sym(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)) {
+			/* find the first choice value and find out choice type */
+			for (menu = parent->list; menu; menu = menu->next) {
+				if (menu->sym) {
+					current_entry = parent;
+					menu_set_type(menu->sym->type);
+					current_entry = menu;
+					menu_set_type(sym->type);
+					break;
+				}
+			}
+			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)));
+				}
+			}
+		}
+		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;
+		}
+	}
+	for (menu = parent->list; menu; menu = menu->next) {
+		if (sym && sym_is_choice(sym) && menu->sym) {
+			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_PROMPT && prop->menu != menu) {
+					prop_warn(prop, "choice values "
+					    "currently only support a "
+					    "single prompt");
+				}
+				if (prop->type == P_DEFAULT)
+					prop_warn(prop, "defaults for choice "
+					    "values not supported");
+			}
+			current_entry = menu;
+			menu_set_type(sym->type);
+			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_CHOICE, 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\n");
+
+		if (sym_is_choice(sym) && !parent->prompt)
+			menu_warn(parent, "choice must have a prompt\n");
+
+		/* 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_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;
+}
+
+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;
+}
+

scripts/config/symbol.c

@@ -0,0 +1,882 @@
+/*
+ * 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 <regex.h>
+#include <sys/utsname.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+struct symbol symbol_yes = {
+	.name = "y",
+	.curr = { "y", yes },
+	.flags = SYMBOL_YES|SYMBOL_VALID,
+}, symbol_mod = {
+	.name = "m",
+	.curr = { "m", mod },
+	.flags = SYMBOL_MOD|SYMBOL_VALID,
+}, symbol_no = {
+	.name = "n",
+	.curr = { "n", no },
+	.flags = SYMBOL_NO|SYMBOL_VALID,
+}, symbol_empty = {
+	.name = "",
+	.curr = { "", no },
+	.flags = SYMBOL_VALID,
+};
+
+int sym_change_count;
+struct symbol *modules_sym;
+tristate modules_val;
+
+void sym_add_default(struct symbol *sym, const char *def)
+{
+	struct property *prop = prop_alloc(P_DEFAULT, sym);
+
+	prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
+}
+
+void sym_init(void)
+{
+	struct symbol *sym;
+	struct utsname uts;
+	char *p;
+	static bool inited = false;
+
+	if (inited)
+		return;
+	inited = true;
+
+	uname(&uts);
+
+	sym = sym_lookup("ARCH", 0);
+	sym->type = S_STRING;
+	sym->flags |= SYMBOL_AUTO;
+	p = getenv("ARCH");
+	if (p)
+		sym_add_default(sym, p);
+
+	sym = sym_lookup("KERNELVERSION", 0);
+	sym->type = S_STRING;
+	sym->flags |= SYMBOL_AUTO;
+	p = getenv("KERNELVERSION");
+	if (p)
+		sym_add_default(sym, p);
+
+	sym = sym_lookup("UNAME_RELEASE", 0);
+	sym->type = S_STRING;
+	sym->flags |= SYMBOL_AUTO;
+	sym_add_default(sym, uts.release);
+}
+
+enum symbol_type sym_get_type(struct symbol *sym)
+{
+	enum symbol_type type = sym->type;
+
+	if (type == S_TRISTATE) {
+		if (sym_is_choice_value(sym) && sym->visible == yes)
+			type = S_BOOLEAN;
+		else if (modules_val == no)
+			type = S_BOOLEAN;
+	}
+	return type;
+}
+
+const char *sym_type_name(enum symbol_type type)
+{
+	switch (type) {
+	case S_BOOLEAN:
+		return "boolean";
+	case S_TRISTATE:
+		return "tristate";
+	case S_INT:
+		return "integer";
+	case S_HEX:
+		return "hex";
+	case S_STRING:
+		return "string";
+	case S_UNKNOWN:
+		return "unknown";
+	case S_OTHER:
+		break;
+	}
+	return "???";
+}
+
+struct property *sym_get_choice_prop(struct symbol *sym)
+{
+	struct property *prop;
+
+	for_all_choices(sym, prop)
+		return prop;
+	return NULL;
+}
+
+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;
+	}
+	return NULL;
+}
+
+struct property *sym_get_range_prop(struct symbol *sym)
+{
+	struct property *prop;
+
+	for_all_properties(sym, prop, P_RANGE) {
+		prop->visible.tri = expr_calc_value(prop->visible.expr);
+		if (prop->visible.tri != no)
+			return prop;
+	}
+	return NULL;
+}
+
+static int sym_get_range_val(struct symbol *sym, int base)
+{
+	sym_calc_value(sym);
+	switch (sym->type) {
+	case S_INT:
+		base = 10;
+		break;
+	case S_HEX:
+		base = 16;
+		break;
+	default:
+		break;
+	}
+	return strtol(sym->curr.val, NULL, base);
+}
+
+static void sym_validate_range(struct symbol *sym)
+{
+	struct property *prop;
+	int base, val, val2;
+	char str[64];
+
+	switch (sym->type) {
+	case S_INT:
+		base = 10;
+		break;
+	case S_HEX:
+		base = 16;
+		break;
+	default:
+		return;
+	}
+	prop = sym_get_range_prop(sym);
+	if (!prop)
+		return;
+	val = strtol(sym->curr.val, NULL, base);
+	val2 = sym_get_range_val(prop->expr->left.sym, base);
+	if (val >= val2) {
+		val2 = sym_get_range_val(prop->expr->right.sym, base);
+		if (val <= val2)
+			return;
+	}
+	if (sym->type == S_INT)
+		sprintf(str, "%d", val2);
+	else
+		sprintf(str, "0x%x", val2);
+	sym->curr.val = strdup(str);
+}
+
+static void sym_calc_visibility(struct symbol *sym)
+{
+	struct property *prop;
+	tristate tri;
+
+	/* any prompt visible? */
+	tri = no;
+	for_all_prompts(sym, prop) {
+		prop->visible.tri = expr_calc_value(prop->visible.expr);
+		tri = E_OR(tri, prop->visible.tri);
+	}
+	if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
+		tri = yes;
+	if (sym->visible != tri) {
+		sym->visible = tri;
+		sym_set_changed(sym);
+	}
+	if (sym_is_choice_value(sym))
+		return;
+	tri = no;
+	if (sym->rev_dep.expr)
+		tri = expr_calc_value(sym->rev_dep.expr);
+	if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
+		tri = yes;
+	if (sym->rev_dep.tri != tri) {
+		sym->rev_dep.tri = tri;
+		sym_set_changed(sym);
+	}
+}
+
+static struct symbol *sym_calc_choice(struct symbol *sym)
+{
+	struct symbol *def_sym;
+	struct property *prop;
+	struct expr *e;
+
+	/* is the user choice visible? */
+	def_sym = sym->user.val;
+	if (def_sym) {
+		sym_calc_visibility(def_sym);
+		if (def_sym->visible != no)
+			return def_sym;
+	}
+
+	/* any of the defaults visible? */
+	for_all_defaults(sym, prop) {
+		prop->visible.tri = expr_calc_value(prop->visible.expr);
+		if (prop->visible.tri == no)
+			continue;
+		def_sym = prop_get_symbol(prop);
+		sym_calc_visibility(def_sym);
+		if (def_sym->visible != no)
+			return def_sym;
+	}
+
+	/* just get the first visible value */
+	prop = sym_get_choice_prop(sym);
+	for (e = prop->expr; e; e = e->left.expr) {
+		def_sym = e->right.sym;
+		sym_calc_visibility(def_sym);
+		if (def_sym->visible != no)
+			return def_sym;
+	}
+
+	/* no choice? reset tristate value */
+	sym->curr.tri = no;
+	return NULL;
+}
+
+void sym_calc_value(struct symbol *sym)
+{
+	struct symbol_value newval, oldval;
+	struct property *prop;
+	struct expr *e;
+
+	if (!sym)
+		return;
+
+	if (sym->flags & SYMBOL_VALID)
+		return;
+	sym->flags |= SYMBOL_VALID;
+
+	oldval = sym->curr;
+
+	switch (sym->type) {
+	case S_INT:
+	case S_HEX:
+	case S_STRING:
+		newval = symbol_empty.curr;
+		break;
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		newval = symbol_no.curr;
+		break;
+	default:
+		sym->curr.val = sym->name;
+		sym->curr.tri = no;
+		return;
+	}
+	if (!sym_is_choice_value(sym))
+		sym->flags &= ~SYMBOL_WRITE;
+
+	sym_calc_visibility(sym);
+
+	/* set default if recursively called */
+	sym->curr = newval;
+
+	switch (sym_get_type(sym)) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		if (sym_is_choice_value(sym) && sym->visible == yes) {
+			prop = sym_get_choice_prop(sym);
+			newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
+		} else if (E_OR(sym->visible, sym->rev_dep.tri) != no) {
+			sym->flags |= SYMBOL_WRITE;
+			if (sym_has_value(sym))
+				newval.tri = sym->user.tri;
+			else if (!sym_is_choice(sym)) {
+				prop = sym_get_default_prop(sym);
+				if (prop)
+					newval.tri = expr_calc_value(prop->expr);
+			}
+			newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri);
+		} else if (!sym_is_choice(sym)) {
+			prop = sym_get_default_prop(sym);
+			if (prop) {
+				sym->flags |= SYMBOL_WRITE;
+				newval.tri = expr_calc_value(prop->expr);
+			}
+		}
+		if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
+			newval.tri = yes;
+		break;
+	case S_STRING:
+	case S_HEX:
+	case S_INT:
+		if (sym->visible != no) {
+			sym->flags |= SYMBOL_WRITE;
+			if (sym_has_value(sym)) {
+				newval.val = sym->user.val;
+				break;
+			}
+		}
+		prop = sym_get_default_prop(sym);
+		if (prop) {
+			struct symbol *ds = prop_get_symbol(prop);
+			if (ds) {
+				sym->flags |= SYMBOL_WRITE;
+				sym_calc_value(ds);
+				newval.val = ds->curr.val;
+			}
+		}
+		break;
+	default:
+		;
+	}
+
+	sym->curr = newval;
+	if (sym_is_choice(sym) && newval.tri == yes)
+		sym->curr.val = sym_calc_choice(sym);
+	sym_validate_range(sym);
+
+	if (memcmp(&oldval, &sym->curr, sizeof(oldval)))
+		sym_set_changed(sym);
+	if (modules_sym == sym)
+		modules_val = modules_sym->curr.tri;
+
+	if (sym_is_choice(sym)) {
+		int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
+		prop = sym_get_choice_prop(sym);
+		for (e = prop->expr; e; e = e->left.expr) {
+			e->right.sym->flags |= flags;
+			if (flags & SYMBOL_CHANGED)
+				sym_set_changed(e->right.sym);
+		}
+	}
+}
+
+void sym_clear_all_valid(void)
+{
+	struct symbol *sym;
+	int i;
+
+	for_all_symbols(i, sym)
+		sym->flags &= ~SYMBOL_VALID;
+	sym_change_count++;
+	if (modules_sym)
+		sym_calc_value(modules_sym);
+}
+
+void sym_set_changed(struct symbol *sym)
+{
+	struct property *prop;
+
+	sym->flags |= SYMBOL_CHANGED;
+	for (prop = sym->prop; prop; prop = prop->next) {
+		if (prop->menu)
+			prop->menu->flags |= MENU_CHANGED;
+	}
+}
+
+void sym_set_all_changed(void)
+{
+	struct symbol *sym;
+	int i;
+
+	for_all_symbols(i, sym)
+		sym_set_changed(sym);
+}
+
+bool sym_tristate_within_range(struct symbol *sym, tristate val)
+{
+	int type = sym_get_type(sym);
+
+	if (sym->visible == no)
+		return false;
+
+	if (type != S_BOOLEAN && type != S_TRISTATE)
+		return false;
+
+	if (type == S_BOOLEAN && val == mod)
+		return false;
+	if (sym->visible <= sym->rev_dep.tri)
+		return false;
+	if (sym_is_choice_value(sym) && sym->visible == yes)
+		return val == yes;
+	return val >= sym->rev_dep.tri && val <= sym->visible;
+}
+
+bool sym_set_tristate_value(struct symbol *sym, tristate val)
+{
+	tristate oldval = sym_get_tristate_value(sym);
+
+	if (oldval != val && !sym_tristate_within_range(sym, val))
+		return false;
+
+	if (sym->flags & SYMBOL_NEW) {
+		sym->flags &= ~SYMBOL_NEW;
+		sym_set_changed(sym);
+	}
+	/*
+	 * setting a choice value also resets the new flag of the choice
+	 * symbol and all other choice values.
+	 */
+	if (sym_is_choice_value(sym) && val == yes) {
+		struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
+		struct property *prop;
+		struct expr *e;
+
+		cs->user.val = sym;
+		cs->flags &= ~SYMBOL_NEW;
+		prop = sym_get_choice_prop(cs);
+		for (e = prop->expr; e; e = e->left.expr) {
+			if (e->right.sym->visible != no)
+				e->right.sym->flags &= ~SYMBOL_NEW;
+		}
+	}
+
+	sym->user.tri = val;
+	if (oldval != val) {
+		sym_clear_all_valid();
+		if (sym == modules_sym)
+			sym_set_all_changed();
+	}
+
+	return true;
+}
+
+tristate sym_toggle_tristate_value(struct symbol *sym)
+{
+	tristate oldval, newval;
+
+	oldval = newval = sym_get_tristate_value(sym);
+	do {
+		switch (newval) {
+		case no:
+			newval = mod;
+			break;
+		case mod:
+			newval = yes;
+			break;
+		case yes:
+			newval = no;
+			break;
+		}
+		if (sym_set_tristate_value(sym, newval))
+			break;
+	} while (oldval != newval);
+	return newval;
+}
+
+bool sym_string_valid(struct symbol *sym, const char *str)
+{
+	signed char ch;
+
+	switch (sym->type) {
+	case S_STRING:
+		return true;
+	case S_INT:
+		ch = *str++;
+		if (ch == '-')
+			ch = *str++;
+		if (!isdigit(ch))
+			return false;
+		if (ch == '0' && *str != 0)
+			return false;
+		while ((ch = *str++)) {
+			if (!isdigit(ch))
+				return false;
+		}
+		return true;
+	case S_HEX:
+		if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
+			str += 2;
+		ch = *str++;
+		do {
+			if (!isxdigit(ch))
+				return false;
+		} while ((ch = *str++));
+		return true;
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		switch (str[0]) {
+		case 'y': case 'Y':
+		case 'm': case 'M':
+		case 'n': case 'N':
+			return true;
+		}
+		return false;
+	default:
+		return false;
+	}
+}
+
+bool sym_string_within_range(struct symbol *sym, const char *str)
+{
+	struct property *prop;
+	int val;
+
+	switch (sym->type) {
+	case S_STRING:
+		return sym_string_valid(sym, str);
+	case S_INT:
+		if (!sym_string_valid(sym, str))
+			return false;
+		prop = sym_get_range_prop(sym);
+		if (!prop)
+			return true;
+		val = strtol(str, NULL, 10);
+		return val >= sym_get_range_val(prop->expr->left.sym, 10) &&
+		       val <= sym_get_range_val(prop->expr->right.sym, 10);
+	case S_HEX:
+		if (!sym_string_valid(sym, str))
+			return false;
+		prop = sym_get_range_prop(sym);
+		if (!prop)
+			return true;
+		val = strtol(str, NULL, 16);
+		return val >= sym_get_range_val(prop->expr->left.sym, 16) &&
+		       val <= sym_get_range_val(prop->expr->right.sym, 16);
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		switch (str[0]) {
+		case 'y': case 'Y':
+			return sym_tristate_within_range(sym, yes);
+		case 'm': case 'M':
+			return sym_tristate_within_range(sym, mod);
+		case 'n': case 'N':
+			return sym_tristate_within_range(sym, no);
+		}
+		return false;
+	default:
+		return false;
+	}
+}
+
+bool sym_set_string_value(struct symbol *sym, const char *newval)
+{
+	const char *oldval;
+	char *val;
+	int size;
+
+	switch (sym->type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		switch (newval[0]) {
+		case 'y': case 'Y':
+			return sym_set_tristate_value(sym, yes);
+		case 'm': case 'M':
+			return sym_set_tristate_value(sym, mod);
+		case 'n': case 'N':
+			return sym_set_tristate_value(sym, no);
+		}
+		return false;
+	default:
+		;
+	}
+
+	if (!sym_string_within_range(sym, newval))
+		return false;
+
+	if (sym->flags & SYMBOL_NEW) {
+		sym->flags &= ~SYMBOL_NEW;
+		sym_set_changed(sym);
+	}
+
+	oldval = sym->user.val;
+	size = strlen(newval) + 1;
+	if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
+		size += 2;
+		sym->user.val = val = malloc(size);
+		*val++ = '0';
+		*val++ = 'x';
+	} else if (!oldval || strcmp(oldval, newval))
+		sym->user.val = val = malloc(size);
+	else
+		return true;
+
+	strcpy(val, newval);
+	free((void *)oldval);
+	sym_clear_all_valid();
+
+	return true;
+}
+
+const char *sym_get_string_value(struct symbol *sym)
+{
+	tristate val;
+
+	switch (sym->type) {
+	case S_BOOLEAN:
+	case S_TRISTATE:
+		val = sym_get_tristate_value(sym);
+		switch (val) {
+		case no:
+			return "n";
+		case mod:
+			return "m";
+		case yes:
+			return "y";
+		}
+		break;
+	default:
+		;
+	}
+	return (const char *)sym->curr.val;
+}
+
+bool sym_is_changable(struct symbol *sym)
+{
+	return sym->visible > sym->rev_dep.tri;
+}
+
+struct symbol *sym_lookup(const char *name, int isconst)
+{
+	struct symbol *symbol;
+	const char *ptr;
+	char *new_name;
+	int hash = 0;
+
+	if (name) {
+		if (name[0] && !name[1]) {
+			switch (name[0]) {
+			case 'y': return &symbol_yes;
+			case 'm': return &symbol_mod;
+			case 'n': return &symbol_no;
+			}
+		}
+		for (ptr = name; *ptr; ptr++)
+			hash += *ptr;
+		hash &= 0xff;
+
+		for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
+			if (!strcmp(symbol->name, name)) {
+				if ((isconst && symbol->flags & SYMBOL_CONST) ||
+				    (!isconst && !(symbol->flags & SYMBOL_CONST)))
+					return symbol;
+			}
+		}
+		new_name = strdup(name);
+	} else {
+		new_name = NULL;
+		hash = 256;
+	}
+
+	symbol = malloc(sizeof(*symbol));
+	memset(symbol, 0, sizeof(*symbol));
+	symbol->name = new_name;
+	symbol->type = S_UNKNOWN;
+	symbol->flags = SYMBOL_NEW;
+	if (isconst)
+		symbol->flags |= SYMBOL_CONST;
+
+	symbol->next = symbol_hash[hash];
+	symbol_hash[hash] = symbol;
+
+	return symbol;
+}
+
+struct symbol *sym_find(const char *name)
+{
+	struct symbol *symbol = NULL;
+	const char *ptr;
+	int hash = 0;
+
+	if (!name)
+		return NULL;
+
+	if (name[0] && !name[1]) {
+		switch (name[0]) {
+		case 'y': return &symbol_yes;
+		case 'm': return &symbol_mod;
+		case 'n': return &symbol_no;
+		}
+	}
+	for (ptr = name; *ptr; ptr++)
+		hash += *ptr;
+	hash &= 0xff;
+
+	for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
+		if (!strcmp(symbol->name, name) &&
+		    !(symbol->flags & SYMBOL_CONST))
+				break;
+	}
+
+	return symbol;
+}
+
+struct symbol **sym_re_search(const char *pattern)
+{
+	struct symbol *sym, **sym_arr = NULL;
+	int i, cnt, size;
+	regex_t re;
+
+	cnt = size = 0;
+	/* Skip if empty */
+	if (strlen(pattern) == 0)
+		return NULL;
+	if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE))
+		return NULL;
+
+	for_all_symbols(i, sym) {
+		if (sym->flags & SYMBOL_CONST || !sym->name)
+			continue;
+		if (regexec(&re, sym->name, 0, NULL, 0))
+			continue;
+		if (cnt + 1 >= size) {
+			void *tmp = sym_arr;
+			size += 16;
+			sym_arr = realloc(sym_arr, size * sizeof(struct symbol *));
+			if (!sym_arr) {
+				free(tmp);
+				return NULL;
+			}
+		}
+		sym_arr[cnt++] = sym;
+	}
+	if (sym_arr)
+		sym_arr[cnt] = NULL;
+	regfree(&re);
+
+	return sym_arr;
+}
+
+
+struct symbol *sym_check_deps(struct symbol *sym);
+
+static struct symbol *sym_check_expr_deps(struct expr *e)
+{
+	struct symbol *sym;
+
+	if (!e)
+		return NULL;
+	switch (e->type) {
+	case E_OR:
+	case E_AND:
+		sym = sym_check_expr_deps(e->left.expr);
+		if (sym)
+			return sym;
+		return sym_check_expr_deps(e->right.expr);
+	case E_NOT:
+		return sym_check_expr_deps(e->left.expr);
+	case E_EQUAL:
+	case E_UNEQUAL:
+		sym = sym_check_deps(e->left.sym);
+		if (sym)
+			return sym;
+		return sym_check_deps(e->right.sym);
+	case E_SYMBOL:
+		return sym_check_deps(e->left.sym);
+	default:
+		break;
+	}
+	printf("Oops! How to check %d?\n", e->type);
+	return NULL;
+}
+
+struct symbol *sym_check_deps(struct symbol *sym)
+{
+	struct symbol *sym2;
+	struct property *prop;
+
+	if (sym->flags & SYMBOL_CHECK) {
+		printf("Warning! Found recursive dependency: %s", sym->name);
+		return sym;
+	}
+	if (sym->flags & SYMBOL_CHECKED)
+		return NULL;
+
+	sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
+	sym2 = sym_check_expr_deps(sym->rev_dep.expr);
+	if (sym2)
+		goto out;
+
+	for (prop = sym->prop; prop; prop = prop->next) {
+		if (prop->type == P_CHOICE || prop->type == P_SELECT)
+			continue;
+		sym2 = sym_check_expr_deps(prop->visible.expr);
+		if (sym2)
+			goto out;
+		if (prop->type != P_DEFAULT || sym_is_choice(sym))
+			continue;
+		sym2 = sym_check_expr_deps(prop->expr);
+		if (sym2)
+			goto out;
+	}
+out:
+	if (sym2) {
+		printf(" %s", sym->name);
+		if (sym2 == sym) {
+			printf("\n");
+			sym2 = NULL;
+		}
+	}
+	sym->flags &= ~SYMBOL_CHECK;
+	return sym2;
+}
+
+struct property *prop_alloc(enum prop_type type, struct symbol *sym)
+{
+	struct property *prop;
+	struct property **propp;
+
+	prop = malloc(sizeof(*prop));
+	memset(prop, 0, sizeof(*prop));
+	prop->type = type;
+	prop->sym = sym;
+	prop->file = current_file;
+	prop->lineno = zconf_lineno();
+
+	/* append property to the prop list of symbol */
+	if (sym) {
+		for (propp = &sym->prop; *propp; propp = &(*propp)->next)
+			;
+		*propp = prop;
+	}
+
+	return prop;
+}
+
+struct symbol *prop_get_symbol(struct property *prop)
+{
+	if (prop->expr && (prop->expr->type == E_SYMBOL ||
+			   prop->expr->type == E_CHOICE))
+		return prop->expr->left.sym;
+	return NULL;
+}
+
+const char *prop_get_type_name(enum prop_type type)
+{
+	switch (type) {
+	case P_PROMPT:
+		return "prompt";
+	case P_COMMENT:
+		return "comment";
+	case P_MENU:
+		return "menu";
+	case P_DEFAULT:
+		return "default";
+	case P_CHOICE:
+		return "choice";
+	case P_SELECT:
+		return "select";
+	case P_RANGE:
+		return "range";
+	case P_UNKNOWN:
+		break;
+	}
+	return "unknown";
+}

scripts/config/util.c

@@ -0,0 +1,109 @@
+/*
+ * Copyright (C) 2002-2005 Roman Zippel <zippel@linux-m68k.org>
+ * Copyright (C) 2002-2005 Sam Ravnborg <sam@ravnborg.org>
+ *
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <string.h>
+#include "lkc.h"
+
+/* file already present in list? If not add it */
+struct file *file_lookup(const char *name)
+{
+	struct file *file;
+
+	for (file = file_list; file; file = file->next) {
+		if (!strcmp(name, file->name))
+			return file;
+	}
+
+	file = malloc(sizeof(*file));
+	memset(file, 0, sizeof(*file));
+	file->name = strdup(name);
+	file->next = file_list;
+	file_list = file;
+	return file;
+}
+
+/* write a dependency file as used by kbuild to track dependencies */
+int file_write_dep(const char *name)
+{
+	struct file *file;
+	FILE *out;
+
+	if (!name)
+		name = ".kconfig.d";
+	out = fopen("..config.tmp", "w");
+	if (!out)
+		return 1;
+	fprintf(out, "deps_config := \\\n");
+	for (file = file_list; file; file = file->next) {
+		if (file->next)
+			fprintf(out, "\t%s \\\n", file->name);
+		else
+			fprintf(out, "\t%s\n", file->name);
+	}
+	fprintf(out, "\n.config include/linux/autoconf.h: $(deps_config)\n\n$(deps_config):\n");
+	fclose(out);
+	rename("..config.tmp", name);
+	return 0;
+}
+
+
+/* Allocate initial growable sting */
+struct gstr str_new(void)
+{
+	struct gstr gs;
+	gs.s = malloc(sizeof(char) * 64);
+	gs.len = 16;
+	strcpy(gs.s, "\0");
+	return gs;
+}
+
+/* Allocate and assign growable string */
+struct gstr str_assign(const char *s)
+{
+	struct gstr gs;
+	gs.s = strdup(s);
+	gs.len = strlen(s) + 1;
+	return gs;
+}
+
+/* Free storage for growable string */
+void str_free(struct gstr *gs)
+{
+	if (gs->s)
+		free(gs->s);
+	gs->s = NULL;
+	gs->len = 0;
+}
+
+/* Append to growable string */
+void str_append(struct gstr *gs, const char *s)
+{
+	size_t l = strlen(gs->s) + strlen(s) + 1;
+	if (l > gs->len) {
+		gs->s   = realloc(gs->s, l);
+		gs->len = l;
+	}
+	strcat(gs->s, s);
+}
+
+/* Append printf formatted string to growable string */
+void str_printf(struct gstr *gs, const char *fmt, ...)
+{
+	va_list ap;
+	char s[10000]; /* big enough... */
+	va_start(ap, fmt);
+	vsnprintf(s, sizeof(s), fmt, ap);
+	str_append(gs, s);
+	va_end(ap);
+}
+
+/* Retrieve value of growable string */
+const char *str_get(struct gstr *gs)
+{
+	return gs->s;
+}
+

scripts/config/zconf.gperf

@@ -0,0 +1,43 @@
+%language=ANSI-C
+%define hash-function-name kconf_id_hash
+%define lookup-function-name kconf_id_lookup
+%define string-pool-name kconf_id_strings
+%compare-strncmp
+%enum
+%pic
+%struct-type
+
+struct kconf_id;
+
+%%
+mainmenu,	T_MAINMENU,	TF_COMMAND
+menu,		T_MENU,		TF_COMMAND
+endmenu,	T_ENDMENU,	TF_COMMAND
+source,		T_SOURCE,	TF_COMMAND
+choice,		T_CHOICE,	TF_COMMAND
+endchoice,	T_ENDCHOICE,	TF_COMMAND
+comment,	T_COMMENT,	TF_COMMAND
+config,		T_CONFIG,	TF_COMMAND
+menuconfig,	T_MENUCONFIG,	TF_COMMAND
+help,		T_HELP,		TF_COMMAND
+if,		T_IF,		TF_COMMAND|TF_PARAM
+endif,		T_ENDIF,	TF_COMMAND
+depends,	T_DEPENDS,	TF_COMMAND
+requires,	T_REQUIRES,	TF_COMMAND
+optional,	T_OPTIONAL,	TF_COMMAND
+default,	T_DEFAULT,	TF_COMMAND, S_UNKNOWN
+prompt,		T_PROMPT,	TF_COMMAND
+tristate,	T_TYPE,		TF_COMMAND, S_TRISTATE
+def_tristate,	T_DEFAULT,	TF_COMMAND, S_TRISTATE
+bool,		T_TYPE,		TF_COMMAND, S_BOOLEAN
+boolean,	T_TYPE,		TF_COMMAND, S_BOOLEAN
+def_bool,	T_DEFAULT,	TF_COMMAND, S_BOOLEAN
+def_boolean,	T_DEFAULT,	TF_COMMAND, S_BOOLEAN
+int,		T_TYPE,		TF_COMMAND, S_INT
+hex,		T_TYPE,		TF_COMMAND, S_HEX
+string,		T_TYPE,		TF_COMMAND, S_STRING
+select,		T_SELECT,	TF_COMMAND
+enable,		T_SELECT,	TF_COMMAND
+range,		T_RANGE,	TF_COMMAND
+on,		T_ON,		TF_PARAM
+%%

scripts/config/zconf.hash.c_shipped

@@ -0,0 +1,231 @@
+/* ANSI-C code produced by gperf version 3.0.1 */
+/* Command-line: gperf  */
+/* Computed positions: -k'1,3' */
+
+#if !((' ' == 32) && ('!' == 33) && ('"' == 34) && ('#' == 35) \
+      && ('%' == 37) && ('&' == 38) && ('\'' == 39) && ('(' == 40) \
+      && (')' == 41) && ('*' == 42) && ('+' == 43) && (',' == 44) \
+      && ('-' == 45) && ('.' == 46) && ('/' == 47) && ('0' == 48) \
+      && ('1' == 49) && ('2' == 50) && ('3' == 51) && ('4' == 52) \
+      && ('5' == 53) && ('6' == 54) && ('7' == 55) && ('8' == 56) \
+      && ('9' == 57) && (':' == 58) && (';' == 59) && ('<' == 60) \
+      && ('=' == 61) && ('>' == 62) && ('?' == 63) && ('A' == 65) \
+      && ('B' == 66) && ('C' == 67) && ('D' == 68) && ('E' == 69) \
+      && ('F' == 70) && ('G' == 71) && ('H' == 72) && ('I' == 73) \
+      && ('J' == 74) && ('K' == 75) && ('L' == 76) && ('M' == 77) \
+      && ('N' == 78) && ('O' == 79) && ('P' == 80) && ('Q' == 81) \
+      && ('R' == 82) && ('S' == 83) && ('T' == 84) && ('U' == 85) \
+      && ('V' == 86) && ('W' == 87) && ('X' == 88) && ('Y' == 89) \
+      && ('Z' == 90) && ('[' == 91) && ('\\' == 92) && (']' == 93) \
+      && ('^' == 94) && ('_' == 95) && ('a' == 97) && ('b' == 98) \
+      && ('c' == 99) && ('d' == 100) && ('e' == 101) && ('f' == 102) \
+      && ('g' == 103) && ('h' == 104) && ('i' == 105) && ('j' == 106) \
+      && ('k' == 107) && ('l' == 108) && ('m' == 109) && ('n' == 110) \
+      && ('o' == 111) && ('p' == 112) && ('q' == 113) && ('r' == 114) \
+      && ('s' == 115) && ('t' == 116) && ('u' == 117) && ('v' == 118) \
+      && ('w' == 119) && ('x' == 120) && ('y' == 121) && ('z' == 122) \
+      && ('{' == 123) && ('|' == 124) && ('}' == 125) && ('~' == 126))
+/* The character set is not based on ISO-646.  */
+#error "gperf generated tables don't work with this execution character set. Please report a bug to <bug-gnu-gperf@gnu.org>."
+#endif
+
+struct kconf_id;
+/* maximum key range = 45, duplicates = 0 */
+
+#ifdef __GNUC__
+__inline
+#else
+#ifdef __cplusplus
+inline
+#endif
+#endif
+static unsigned int
+kconf_id_hash (register const char *str, register unsigned int len)
+{
+  static unsigned char asso_values[] =
+    {
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 25, 10, 15,
+       0,  0,  5, 47,  0,  0, 47, 47,  0, 10,
+       0, 20, 20, 20,  5,  0,  0, 20, 47, 47,
+      20, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47, 47, 47, 47, 47,
+      47, 47, 47, 47, 47, 47
+    };
+  register int hval = len;
+
+  switch (hval)
+    {
+      default:
+        hval += asso_values[(unsigned char)str[2]];
+      /*FALLTHROUGH*/
+      case 2:
+      case 1:
+        hval += asso_values[(unsigned char)str[0]];
+        break;
+    }
+  return hval;
+}
+
+struct kconf_id_strings_t
+  {
+    char kconf_id_strings_str2[sizeof("if")];
+    char kconf_id_strings_str3[sizeof("int")];
+    char kconf_id_strings_str4[sizeof("help")];
+    char kconf_id_strings_str5[sizeof("endif")];
+    char kconf_id_strings_str6[sizeof("select")];
+    char kconf_id_strings_str7[sizeof("endmenu")];
+    char kconf_id_strings_str8[sizeof("tristate")];
+    char kconf_id_strings_str9[sizeof("endchoice")];
+    char kconf_id_strings_str10[sizeof("range")];
+    char kconf_id_strings_str11[sizeof("string")];
+    char kconf_id_strings_str12[sizeof("default")];
+    char kconf_id_strings_str13[sizeof("def_bool")];
+    char kconf_id_strings_str14[sizeof("menu")];
+    char kconf_id_strings_str16[sizeof("def_boolean")];
+    char kconf_id_strings_str17[sizeof("def_tristate")];
+    char kconf_id_strings_str18[sizeof("mainmenu")];
+    char kconf_id_strings_str20[sizeof("menuconfig")];
+    char kconf_id_strings_str21[sizeof("config")];
+    char kconf_id_strings_str22[sizeof("on")];
+    char kconf_id_strings_str23[sizeof("hex")];
+    char kconf_id_strings_str26[sizeof("source")];
+    char kconf_id_strings_str27[sizeof("depends")];
+    char kconf_id_strings_str28[sizeof("optional")];
+    char kconf_id_strings_str31[sizeof("enable")];
+    char kconf_id_strings_str32[sizeof("comment")];
+    char kconf_id_strings_str33[sizeof("requires")];
+    char kconf_id_strings_str34[sizeof("bool")];
+    char kconf_id_strings_str37[sizeof("boolean")];
+    char kconf_id_strings_str41[sizeof("choice")];
+    char kconf_id_strings_str46[sizeof("prompt")];
+  };
+static struct kconf_id_strings_t kconf_id_strings_contents =
+  {
+    "if",
+    "int",
+    "help",
+    "endif",
+    "select",
+    "endmenu",
+    "tristate",
+    "endchoice",
+    "range",
+    "string",
+    "default",
+    "def_bool",
+    "menu",
+    "def_boolean",
+    "def_tristate",
+    "mainmenu",
+    "menuconfig",
+    "config",
+    "on",
+    "hex",
+    "source",
+    "depends",
+    "optional",
+    "enable",
+    "comment",
+    "requires",
+    "bool",
+    "boolean",
+    "choice",
+    "prompt"
+  };
+#define kconf_id_strings ((const char *) &kconf_id_strings_contents)
+#ifdef __GNUC__
+__inline
+#endif
+struct kconf_id *
+kconf_id_lookup (register const char *str, register unsigned int len)
+{
+  enum
+    {
+      TOTAL_KEYWORDS = 30,
+      MIN_WORD_LENGTH = 2,
+      MAX_WORD_LENGTH = 12,
+      MIN_HASH_VALUE = 2,
+      MAX_HASH_VALUE = 46
+    };
+
+  static struct kconf_id wordlist[] =
+    {
+      {-1}, {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str2,		T_IF,		TF_COMMAND|TF_PARAM},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str3,		T_TYPE,		TF_COMMAND, S_INT},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str4,		T_HELP,		TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str5,		T_ENDIF,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str6,		T_SELECT,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str7,	T_ENDMENU,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str8,	T_TYPE,		TF_COMMAND, S_TRISTATE},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str9,	T_ENDCHOICE,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str10,		T_RANGE,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str11,		T_TYPE,		TF_COMMAND, S_STRING},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str12,	T_DEFAULT,	TF_COMMAND, S_UNKNOWN},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str13,	T_DEFAULT,	TF_COMMAND, S_BOOLEAN},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str14,		T_MENU,		TF_COMMAND},
+      {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str16,	T_DEFAULT,	TF_COMMAND, S_BOOLEAN},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str17,	T_DEFAULT,	TF_COMMAND, S_TRISTATE},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str18,	T_MAINMENU,	TF_COMMAND},
+      {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str20,	T_MENUCONFIG,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str21,		T_CONFIG,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str22,		T_ON,		TF_PARAM},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str23,		T_TYPE,		TF_COMMAND, S_HEX},
+      {-1}, {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str26,		T_SOURCE,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str27,	T_DEPENDS,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str28,	T_OPTIONAL,	TF_COMMAND},
+      {-1}, {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str31,		T_SELECT,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str32,	T_COMMENT,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str33,	T_REQUIRES,	TF_COMMAND},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str34,		T_TYPE,		TF_COMMAND, S_BOOLEAN},
+      {-1}, {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str37,	T_TYPE,		TF_COMMAND, S_BOOLEAN},
+      {-1}, {-1}, {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str41,		T_CHOICE,	TF_COMMAND},
+      {-1}, {-1}, {-1}, {-1},
+      {(int)(long)&((struct kconf_id_strings_t *)0)->kconf_id_strings_str46,		T_PROMPT,	TF_COMMAND}
+    };
+
+  if (len <= MAX_WORD_LENGTH && len >= MIN_WORD_LENGTH)
+    {
+      register int key = kconf_id_hash (str, len);
+
+      if (key <= MAX_HASH_VALUE && key >= 0)
+        {
+          register int o = wordlist[key].name;
+          if (o >= 0)
+            {
+              register const char *s = o + kconf_id_strings;
+
+              if (*str == *s && !strncmp (str + 1, s + 1, len - 1) && s[len] == '\0')
+                return &wordlist[key];
+            }
+        }
+    }
+  return 0;
+}
+

scripts/config/zconf.l

@@ -0,0 +1,350 @@
+%option backup nostdinit noyywrap never-interactive full ecs
+%option 8bit backup nodefault perf-report perf-report
+%x COMMAND HELP STRING PARAM
+%{
+/*
+ * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
+ * Released under the terms of the GNU GPL v2.0.
+ */
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+#define START_STRSIZE	16
+
+static struct {
+	struct file *file;
+	int lineno;
+} current_pos;
+
+static char *text;
+static int text_size, text_asize;
+
+struct buffer {
+        struct buffer *parent;
+        YY_BUFFER_STATE state;
+};
+
+struct buffer *current_buf;
+
+static int last_ts, first_ts;
+
+static void zconf_endhelp(void);
+static void zconf_endfile(void);
+
+void new_string(void)
+{
+	text = malloc(START_STRSIZE);
+	text_asize = START_STRSIZE;
+	text_size = 0;
+	*text = 0;
+}
+
+void append_string(const char *str, int size)
+{
+	int new_size = text_size + size + 1;
+	if (new_size > text_asize) {
+		new_size += START_STRSIZE - 1;
+		new_size &= -START_STRSIZE;
+		text = realloc(text, new_size);
+		text_asize = new_size;
+	}
+	memcpy(text + text_size, str, size);
+	text_size += size;
+	text[text_size] = 0;
+}
+
+void alloc_string(const char *str, int size)
+{
+	text = malloc(size + 1);
+	memcpy(text, str, size);
+	text[size] = 0;
+}
+%}
+
+ws	[ \n\t]
+n	[A-Za-z0-9_]
+
+%%
+	int str = 0;
+	int ts, i;
+
+[ \t]*#.*\n	|
+[ \t]*\n	{
+	current_file->lineno++;
+	return T_EOL;
+}
+[ \t]*#.*
+
+
+[ \t]+	{
+	BEGIN(COMMAND);
+}
+
+.	{
+	unput(yytext[0]);
+	BEGIN(COMMAND);
+}
+
+
+<COMMAND>{
+	{n}+	{
+		struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
+		BEGIN(PARAM);
+		current_pos.file = current_file;
+		current_pos.lineno = current_file->lineno;
+		if (id && id->flags & TF_COMMAND) {
+			zconflval.id = id;
+			return id->token;
+		}
+		alloc_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD;
+	}
+	.
+	\n	{
+		BEGIN(INITIAL);
+		current_file->lineno++;
+		return T_EOL;
+	}
+}
+
+<PARAM>{
+	"&&"	return T_AND;
+	"||"	return T_OR;
+	"("	return T_OPEN_PAREN;
+	")"	return T_CLOSE_PAREN;
+	"!"	return T_NOT;
+	"="	return T_EQUAL;
+	"!="	return T_UNEQUAL;
+	\"|\'	{
+		str = yytext[0];
+		new_string();
+		BEGIN(STRING);
+	}
+	\n	BEGIN(INITIAL); current_file->lineno++; return T_EOL;
+	---	/* ignore */
+	({n}|[-/.])+	{
+		struct kconf_id *id = kconf_id_lookup(yytext, yyleng);
+		if (id && id->flags & TF_PARAM) {
+			zconflval.id = id;
+			return id->token;
+		}
+		alloc_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD;
+	}
+	#.*	/* comment */
+	\\\n	current_file->lineno++;
+	.
+	<<EOF>> {
+		BEGIN(INITIAL);
+	}
+}
+
+<STRING>{
+	[^'"\\\n]+/\n	{
+		append_string(yytext, yyleng);
+		zconflval.string = text;
+		return T_WORD_QUOTE;
+	}
+	[^'"\\\n]+	{
+		append_string(yytext, yyleng);
+	}
+	\\.?/\n	{
+		append_string(yytext + 1, yyleng - 1);
+		zconflval.string = text;
+		return T_WORD_QUOTE;
+	}
+	\\.?	{
+		append_string(yytext + 1, yyleng - 1);
+	}
+	\'|\"	{
+		if (str == yytext[0]) {
+			BEGIN(PARAM);
+			zconflval.string = text;
+			return T_WORD_QUOTE;
+		} else
+			append_string(yytext, 1);
+	}
+	\n	{
+		printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno());
+		current_file->lineno++;
+		BEGIN(INITIAL);
+		return T_EOL;
+	}
+	<<EOF>>	{
+		BEGIN(INITIAL);
+	}
+}
+
+<HELP>{
+	[ \t]+	{
+		ts = 0;
+		for (i = 0; i < yyleng; i++) {
+			if (yytext[i] == '\t')
+				ts = (ts & ~7) + 8;
+			else
+				ts++;
+		}
+		last_ts = ts;
+		if (first_ts) {
+			if (ts < first_ts) {
+				zconf_endhelp();
+				return T_HELPTEXT;
+			}
+			ts -= first_ts;
+			while (ts > 8) {
+				append_string("        ", 8);
+				ts -= 8;
+			}
+			append_string("        ", ts);
+		}
+	}
+	[ \t]*\n/[^ \t\n] {
+		current_file->lineno++;
+		zconf_endhelp();
+		return T_HELPTEXT;
+	}
+	[ \t]*\n	{
+		current_file->lineno++;
+		append_string("\n", 1);
+	}
+	[^ \t\n].* {
+		append_string(yytext, yyleng);
+		if (!first_ts)
+			first_ts = last_ts;
+	}
+	<<EOF>>	{
+		zconf_endhelp();
+		return T_HELPTEXT;
+	}
+}
+
+<<EOF>>	{
+	if (current_file) {
+		zconf_endfile();
+		return T_EOL;
+	}
+	fclose(yyin);
+	yyterminate();
+}
+
+%%
+void zconf_starthelp(void)
+{
+	new_string();
+	last_ts = first_ts = 0;
+	BEGIN(HELP);
+}
+
+static void zconf_endhelp(void)
+{
+	zconflval.string = text;
+	BEGIN(INITIAL);
+}
+
+
+/*
+ * Try to open specified file with following names:
+ * ./name
+ * $(srctree)/name
+ * The latter is used when srctree is separate from objtree
+ * when compiling the kernel.
+ * Return NULL if file is not found.
+ */
+FILE *zconf_fopen(const char *name)
+{
+	char *env, fullname[PATH_MAX+1];
+	FILE *f;
+
+	f = fopen(name, "r");
+	if (!f && name[0] != '/') {
+		env = getenv(SRCTREE);
+		if (env) {
+			sprintf(fullname, "%s/%s", env, name);
+			f = fopen(fullname, "r");
+		}
+	}
+	return f;
+}
+
+void zconf_initscan(const char *name)
+{
+	yyin = zconf_fopen(name);
+	if (!yyin) {
+		printf("can't find file %s\n", name);
+		exit(1);
+	}
+
+	current_buf = malloc(sizeof(*current_buf));
+	memset(current_buf, 0, sizeof(*current_buf));
+
+	current_file = file_lookup(name);
+	current_file->lineno = 1;
+	current_file->flags = FILE_BUSY;
+}
+
+void zconf_nextfile(const char *name)
+{
+	struct file *file = file_lookup(name);
+	struct buffer *buf = malloc(sizeof(*buf));
+	memset(buf, 0, sizeof(*buf));
+
+	current_buf->state = YY_CURRENT_BUFFER;
+	yyin = zconf_fopen(name);
+	if (!yyin) {
+		printf("%s:%d: can't open file \"%s\"\n", zconf_curname(), zconf_lineno(), name);
+		exit(1);
+	}
+	yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE));
+	buf->parent = current_buf;
+	current_buf = buf;
+
+	if (file->flags & FILE_BUSY) {
+		printf("recursive scan (%s)?\n", name);
+		exit(1);
+	}
+	if (file->flags & FILE_SCANNED) {
+		printf("file %s already scanned?\n", name);
+		exit(1);
+	}
+	file->flags |= FILE_BUSY;
+	file->lineno = 1;
+	file->parent = current_file;
+	current_file = file;
+}
+
+static void zconf_endfile(void)
+{
+	struct buffer *parent;
+
+	current_file->flags |= FILE_SCANNED;
+	current_file->flags &= ~FILE_BUSY;
+	current_file = current_file->parent;
+
+	parent = current_buf->parent;
+	if (parent) {
+		fclose(yyin);
+		yy_delete_buffer(YY_CURRENT_BUFFER);
+		yy_switch_to_buffer(parent->state);
+	}
+	free(current_buf);
+	current_buf = parent;
+}
+
+int zconf_lineno(void)
+{
+	return current_pos.lineno;
+}
+
+char *zconf_curname(void)
+{
+	return current_pos.file ? current_pos.file->name : "<none>";
+}

scripts/config/zconf.y

@@ -0,0 +1,681 @@
+%{
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdbool.h>
+
+#define LKC_DIRECT_LINK
+#include "lkc.h"
+
+#include "zconf.hash.c"
+
+#define printd(mask, fmt...) if (cdebug & (mask)) printf(fmt)
+
+#define PRINTD		0x0001
+#define DEBUG_PARSE	0x0002
+
+int cdebug = PRINTD;
+
+extern int zconflex(void);
+static void zconfprint(const char *err, ...);
+static void zconf_error(const char *err, ...);
+static void zconferror(const char *err);
+static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken);
+
+struct symbol *symbol_hash[257];
+
+static struct menu *current_menu, *current_entry;
+
+#define YYDEBUG 0
+#if YYDEBUG
+#define YYERROR_VERBOSE
+#endif
+%}
+%expect 26
+
+%union
+{
+	char *string;
+	struct file *file;
+	struct symbol *symbol;
+	struct expr *expr;
+	struct menu *menu;
+	struct kconf_id *id;
+}
+
+%token <id>T_MAINMENU
+%token <id>T_MENU
+%token <id>T_ENDMENU
+%token <id>T_SOURCE
+%token <id>T_CHOICE
+%token <id>T_ENDCHOICE
+%token <id>T_COMMENT
+%token <id>T_CONFIG
+%token <id>T_MENUCONFIG
+%token <id>T_HELP
+%token <string> T_HELPTEXT
+%token <id>T_IF
+%token <id>T_ENDIF
+%token <id>T_DEPENDS
+%token <id>T_REQUIRES
+%token <id>T_OPTIONAL
+%token <id>T_PROMPT
+%token <id>T_TYPE
+%token <id>T_DEFAULT
+%token <id>T_SELECT
+%token <id>T_RANGE
+%token <id>T_ON
+%token <string> T_WORD
+%token <string> T_WORD_QUOTE
+%token T_UNEQUAL
+%token T_CLOSE_PAREN
+%token T_OPEN_PAREN
+%token T_EOL
+
+%left T_OR
+%left T_AND
+%left T_EQUAL T_UNEQUAL
+%nonassoc T_NOT
+
+%type <string> prompt
+%type <symbol> symbol
+%type <expr> expr
+%type <expr> if_expr
+%type <id> end
+%type <id> option_name
+%type <menu> if_entry menu_entry choice_entry
+
+%destructor {
+	fprintf(stderr, "%s:%d: missing end statement for this entry\n",
+		$$->file->name, $$->lineno);
+	if (current_menu == $$)
+		menu_end_menu();
+} if_entry menu_entry choice_entry
+
+%%
+input: stmt_list;
+
+stmt_list:
+	  /* empty */
+	| stmt_list common_stmt
+	| stmt_list choice_stmt
+	| stmt_list menu_stmt
+	| stmt_list T_MAINMENU prompt nl
+	| stmt_list end			{ zconf_error("unexpected end statement"); }
+	| stmt_list T_WORD error T_EOL	{ zconf_error("unknown statement \"%s\"", $2); }
+	| stmt_list option_name error T_EOL
+{
+	zconf_error("unexpected option \"%s\"", kconf_id_strings + $2->name);
+}
+	| stmt_list error T_EOL		{ zconf_error("invalid statement"); }
+;
+
+option_name:
+	T_DEPENDS | T_PROMPT | T_TYPE | T_SELECT | T_OPTIONAL | T_RANGE | T_DEFAULT
+;
+
+common_stmt:
+	  T_EOL
+	| if_stmt
+	| comment_stmt
+	| config_stmt
+	| menuconfig_stmt
+	| source_stmt
+;
+
+option_error:
+	  T_WORD error T_EOL		{ zconf_error("unknown option \"%s\"", $1); }
+	| error T_EOL			{ zconf_error("invalid option"); }
+;
+
+
+/* config/menuconfig entry */
+
+config_entry_start: T_CONFIG T_WORD T_EOL
+{
+	struct symbol *sym = sym_lookup($2, 0);
+	sym->flags |= SYMBOL_OPTIONAL;
+	menu_add_entry(sym);
+	printd(DEBUG_PARSE, "%s:%d:config %s\n", zconf_curname(), zconf_lineno(), $2);
+};
+
+config_stmt: config_entry_start config_option_list
+{
+	menu_end_entry();
+	printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
+};
+
+menuconfig_entry_start: T_MENUCONFIG T_WORD T_EOL
+{
+	struct symbol *sym = sym_lookup($2, 0);
+	sym->flags |= SYMBOL_OPTIONAL;
+	menu_add_entry(sym);
+	printd(DEBUG_PARSE, "%s:%d:menuconfig %s\n", zconf_curname(), zconf_lineno(), $2);
+};
+
+menuconfig_stmt: menuconfig_entry_start config_option_list
+{
+	if (current_entry->prompt)
+		current_entry->prompt->type = P_MENU;
+	else
+		zconfprint("warning: menuconfig statement without prompt");
+	menu_end_entry();
+	printd(DEBUG_PARSE, "%s:%d:endconfig\n", zconf_curname(), zconf_lineno());
+};
+
+config_option_list:
+	  /* empty */
+	| config_option_list config_option
+	| config_option_list depends
+	| config_option_list help
+	| config_option_list option_error
+	| config_option_list T_EOL
+;
+
+config_option: T_TYPE prompt_stmt_opt T_EOL
+{
+	menu_set_type($1->stype);
+	printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
+		zconf_curname(), zconf_lineno(),
+		$1->stype);
+};
+
+config_option: T_PROMPT prompt if_expr T_EOL
+{
+	menu_add_prompt(P_PROMPT, $2, $3);
+	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_DEFAULT expr if_expr T_EOL
+{
+	menu_add_expr(P_DEFAULT, $2, $3);
+	if ($1->stype != S_UNKNOWN)
+		menu_set_type($1->stype);
+	printd(DEBUG_PARSE, "%s:%d:default(%u)\n",
+		zconf_curname(), zconf_lineno(),
+		$1->stype);
+};
+
+config_option: T_SELECT T_WORD if_expr T_EOL
+{
+	menu_add_symbol(P_SELECT, sym_lookup($2, 0), $3);
+	printd(DEBUG_PARSE, "%s:%d:select\n", zconf_curname(), zconf_lineno());
+};
+
+config_option: T_RANGE symbol symbol if_expr T_EOL
+{
+	menu_add_expr(P_RANGE, expr_alloc_comp(E_RANGE,$2, $3), $4);
+	printd(DEBUG_PARSE, "%s:%d:range\n", zconf_curname(), zconf_lineno());
+};
+
+/* choice entry */
+
+choice: T_CHOICE T_EOL
+{
+	struct symbol *sym = sym_lookup(NULL, 0);
+	sym->flags |= SYMBOL_CHOICE;
+	menu_add_entry(sym);
+	menu_add_expr(P_CHOICE, NULL, NULL);
+	printd(DEBUG_PARSE, "%s:%d:choice\n", zconf_curname(), zconf_lineno());
+};
+
+choice_entry: choice choice_option_list
+{
+	$$ = menu_add_menu();
+};
+
+choice_end: end
+{
+	if (zconf_endtoken($1, T_CHOICE, T_ENDCHOICE)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endchoice\n", zconf_curname(), zconf_lineno());
+	}
+};
+
+choice_stmt: choice_entry choice_block choice_end
+;
+
+choice_option_list:
+	  /* empty */
+	| choice_option_list choice_option
+	| choice_option_list depends
+	| choice_option_list help
+	| choice_option_list T_EOL
+	| choice_option_list option_error
+;
+
+choice_option: T_PROMPT prompt if_expr T_EOL
+{
+	menu_add_prompt(P_PROMPT, $2, $3);
+	printd(DEBUG_PARSE, "%s:%d:prompt\n", zconf_curname(), zconf_lineno());
+};
+
+choice_option: T_TYPE prompt_stmt_opt T_EOL
+{
+	if ($1->stype == S_BOOLEAN || $1->stype == S_TRISTATE) {
+		menu_set_type($1->stype);
+		printd(DEBUG_PARSE, "%s:%d:type(%u)\n",
+			zconf_curname(), zconf_lineno(),
+			$1->stype);
+	} else
+		YYERROR;
+};
+
+choice_option: T_OPTIONAL T_EOL
+{
+	current_entry->sym->flags |= SYMBOL_OPTIONAL;
+	printd(DEBUG_PARSE, "%s:%d:optional\n", zconf_curname(), zconf_lineno());
+};
+
+choice_option: T_DEFAULT T_WORD if_expr T_EOL
+{
+	if ($1->stype == S_UNKNOWN) {
+		menu_add_symbol(P_DEFAULT, sym_lookup($2, 0), $3);
+		printd(DEBUG_PARSE, "%s:%d:default\n",
+			zconf_curname(), zconf_lineno());
+	} else
+		YYERROR;
+};
+
+choice_block:
+	  /* empty */
+	| choice_block common_stmt
+;
+
+/* if entry */
+
+if_entry: T_IF expr nl
+{
+	printd(DEBUG_PARSE, "%s:%d:if\n", zconf_curname(), zconf_lineno());
+	menu_add_entry(NULL);
+	menu_add_dep($2);
+	$$ = menu_add_menu();
+};
+
+if_end: end
+{
+	if (zconf_endtoken($1, T_IF, T_ENDIF)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endif\n", zconf_curname(), zconf_lineno());
+	}
+};
+
+if_stmt: if_entry if_block if_end
+;
+
+if_block:
+	  /* empty */
+	| if_block common_stmt
+	| if_block menu_stmt
+	| if_block choice_stmt
+;
+
+/* menu entry */
+
+menu: T_MENU prompt T_EOL
+{
+	menu_add_entry(NULL);
+	menu_add_prompt(P_MENU, $2, NULL);
+	printd(DEBUG_PARSE, "%s:%d:menu\n", zconf_curname(), zconf_lineno());
+};
+
+menu_entry: menu depends_list
+{
+	$$ = menu_add_menu();
+};
+
+menu_end: end
+{
+	if (zconf_endtoken($1, T_MENU, T_ENDMENU)) {
+		menu_end_menu();
+		printd(DEBUG_PARSE, "%s:%d:endmenu\n", zconf_curname(), zconf_lineno());
+	}
+};
+
+menu_stmt: menu_entry menu_block menu_end
+;
+
+menu_block:
+	  /* empty */
+	| menu_block common_stmt
+	| menu_block menu_stmt
+	| menu_block choice_stmt
+;
+
+source_stmt: T_SOURCE prompt T_EOL
+{
+	printd(DEBUG_PARSE, "%s:%d:source %s\n", zconf_curname(), zconf_lineno(), $2);
+	zconf_nextfile($2);
+};
+
+/* comment entry */
+
+comment: T_COMMENT prompt T_EOL
+{
+	menu_add_entry(NULL);
+	menu_add_prompt(P_COMMENT, $2, NULL);
+	printd(DEBUG_PARSE, "%s:%d:comment\n", zconf_curname(), zconf_lineno());
+};
+
+comment_stmt: comment depends_list
+{
+	menu_end_entry();
+};
+
+/* help option */
+
+help_start: T_HELP T_EOL
+{
+	printd(DEBUG_PARSE, "%s:%d:help\n", zconf_curname(), zconf_lineno());
+	zconf_starthelp();
+};
+
+help: help_start T_HELPTEXT
+{
+	current_entry->sym->help = $2;
+};
+
+/* depends option */
+
+depends_list:
+	  /* empty */
+	| depends_list depends
+	| depends_list T_EOL
+	| depends_list option_error
+;
+
+depends: T_DEPENDS T_ON expr T_EOL
+{
+	menu_add_dep($3);
+	printd(DEBUG_PARSE, "%s:%d:depends on\n", zconf_curname(), zconf_lineno());
+}
+	| T_DEPENDS expr T_EOL
+{
+	menu_add_dep($2);
+	printd(DEBUG_PARSE, "%s:%d:depends\n", zconf_curname(), zconf_lineno());
+}
+	| T_REQUIRES expr T_EOL
+{
+	menu_add_dep($2);
+	printd(DEBUG_PARSE, "%s:%d:requires\n", zconf_curname(), zconf_lineno());
+};
+
+/* prompt statement */
+
+prompt_stmt_opt:
+	  /* empty */
+	| prompt if_expr
+{
+	menu_add_prompt(P_PROMPT, $1, $2);
+};
+
+prompt:	  T_WORD
+	| T_WORD_QUOTE
+;
+
+end:	  T_ENDMENU T_EOL	{ $$ = $1; }
+	| T_ENDCHOICE T_EOL	{ $$ = $1; }
+	| T_ENDIF T_EOL		{ $$ = $1; }
+;
+
+nl:
+	  T_EOL
+	| nl T_EOL
+;
+
+if_expr:  /* empty */			{ $$ = NULL; }
+	| T_IF expr			{ $$ = $2; }
+;
+
+expr:	  symbol				{ $$ = expr_alloc_symbol($1); }
+	| symbol T_EQUAL symbol			{ $$ = expr_alloc_comp(E_EQUAL, $1, $3); }
+	| symbol T_UNEQUAL symbol		{ $$ = expr_alloc_comp(E_UNEQUAL, $1, $3); }
+	| T_OPEN_PAREN expr T_CLOSE_PAREN	{ $$ = $2; }
+	| T_NOT expr				{ $$ = expr_alloc_one(E_NOT, $2); }
+	| expr T_OR expr			{ $$ = expr_alloc_two(E_OR, $1, $3); }
+	| expr T_AND expr			{ $$ = expr_alloc_two(E_AND, $1, $3); }
+;
+
+symbol:	  T_WORD	{ $$ = sym_lookup($1, 0); free($1); }
+	| T_WORD_QUOTE	{ $$ = sym_lookup($1, 1); free($1); }
+;
+
+%%
+
+void conf_parse(const char *name)
+{
+	struct symbol *sym;
+	int i;
+
+	zconf_initscan(name);
+
+	sym_init();
+	menu_init();
+	modules_sym = sym_lookup("MODULES", 0);
+	rootmenu.prompt = menu_add_prompt(P_MENU, "Linux Kernel Configuration", NULL);
+
+#if YYDEBUG
+	if (getenv("ZCONF_DEBUG"))
+		zconfdebug = 1;
+#endif
+	zconfparse();
+	if (zconfnerrs)
+		exit(1);
+	menu_finalize(&rootmenu);
+	for_all_symbols(i, sym) {
+		sym_check_deps(sym);
+        }
+
+	sym_change_count = 1;
+}
+
+const char *zconf_tokenname(int token)
+{
+	switch (token) {
+	case T_MENU:		return "menu";
+	case T_ENDMENU:		return "endmenu";
+	case T_CHOICE:		return "choice";
+	case T_ENDCHOICE:	return "endchoice";
+	case T_IF:		return "if";
+	case T_ENDIF:		return "endif";
+	case T_DEPENDS:		return "depends";
+	}
+	return "<token>";
+}
+
+static bool zconf_endtoken(struct kconf_id *id, int starttoken, int endtoken)
+{
+	if (id->token != endtoken) {
+		zconf_error("unexpected '%s' within %s block",
+			kconf_id_strings + id->name, zconf_tokenname(starttoken));
+		zconfnerrs++;
+		return false;
+	}
+	if (current_menu->file != current_file) {
+		zconf_error("'%s' in different file than '%s'",
+			kconf_id_strings + id->name, zconf_tokenname(starttoken));
+		fprintf(stderr, "%s:%d: location of the '%s'\n",
+			current_menu->file->name, current_menu->lineno,
+			zconf_tokenname(starttoken));
+		zconfnerrs++;
+		return false;
+	}
+	return true;
+}
+
+static void zconfprint(const char *err, ...)
+{
+	va_list ap;
+
+	fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
+	va_start(ap, err);
+	vfprintf(stderr, err, ap);
+	va_end(ap);
+	fprintf(stderr, "\n");
+}
+
+static void zconf_error(const char *err, ...)
+{
+	va_list ap;
+
+	zconfnerrs++;
+	fprintf(stderr, "%s:%d: ", zconf_curname(), zconf_lineno());
+	va_start(ap, err);
+	vfprintf(stderr, err, ap);
+	va_end(ap);
+	fprintf(stderr, "\n");
+}
+
+static void zconferror(const char *err)
+{
+#if YYDEBUG
+	fprintf(stderr, "%s:%d: %s\n", zconf_curname(), zconf_lineno() + 1, err);
+#endif
+}
+
+void print_quoted_string(FILE *out, const char *str)
+{
+	const char *p;
+	int len;
+
+	putc('"', out);
+	while ((p = strchr(str, '"'))) {
+		len = p - str;
+		if (len)
+			fprintf(out, "%.*s", len, str);
+		fputs("\\\"", out);
+		str = p + 1;
+	}
+	fputs(str, out);
+	putc('"', out);
+}
+
+void print_symbol(FILE *out, struct menu *menu)
+{
+	struct symbol *sym = menu->sym;
+	struct property *prop;
+
+	if (sym_is_choice(sym))
+		fprintf(out, "choice\n");
+	else
+		fprintf(out, "config %s\n", sym->name);
+	switch (sym->type) {
+	case S_BOOLEAN:
+		fputs("  boolean\n", out);
+		break;
+	case S_TRISTATE:
+		fputs("  tristate\n", out);
+		break;
+	case S_STRING:
+		fputs("  string\n", out);
+		break;
+	case S_INT:
+		fputs("  integer\n", out);
+		break;
+	case S_HEX:
+		fputs("  hex\n", out);
+		break;
+	default:
+		fputs("  ???\n", out);
+		break;
+	}
+	for (prop = sym->prop; prop; prop = prop->next) {
+		if (prop->menu != menu)
+			continue;
+		switch (prop->type) {
+		case P_PROMPT:
+			fputs("  prompt ", out);
+			print_quoted_string(out, prop->text);
+			if (!expr_is_yes(prop->visible.expr)) {
+				fputs(" if ", out);
+				expr_fprint(prop->visible.expr, out);
+			}
+			fputc('\n', out);
+			break;
+		case P_DEFAULT:
+			fputs( "  default ", out);
+			expr_fprint(prop->expr, out);
+			if (!expr_is_yes(prop->visible.expr)) {
+				fputs(" if ", out);
+				expr_fprint(prop->visible.expr, out);
+			}
+			fputc('\n', out);
+			break;
+		case P_CHOICE:
+			fputs("  #choice value\n", out);
+			break;
+		default:
+			fprintf(out, "  unknown prop %d!\n", prop->type);
+			break;
+		}
+	}
+	if (sym->help) {
+		int len = strlen(sym->help);
+		while (sym->help[--len] == '\n')
+			sym->help[len] = 0;
+		fprintf(out, "  help\n%s\n", sym->help);
+	}
+	fputc('\n', out);
+}
+
+void zconfdump(FILE *out)
+{
+	struct property *prop;
+	struct symbol *sym;
+	struct menu *menu;
+
+	menu = rootmenu.list;
+	while (menu) {
+		if ((sym = menu->sym))
+			print_symbol(out, menu);
+		else if ((prop = menu->prompt)) {
+			switch (prop->type) {
+			case P_COMMENT:
+				fputs("\ncomment ", out);
+				print_quoted_string(out, prop->text);
+				fputs("\n", out);
+				break;
+			case P_MENU:
+				fputs("\nmenu ", out);
+				print_quoted_string(out, prop->text);
+				fputs("\n", out);
+				break;
+			default:
+				;
+			}
+			if (!expr_is_yes(prop->visible.expr)) {
+				fputs("  depends ", out);
+				expr_fprint(prop->visible.expr, out);
+				fputc('\n', out);
+			}
+			fputs("\n", out);
+		}
+
+		if (menu->list)
+			menu = menu->list;
+		else if (menu->next)
+			menu = menu->next;
+		else while ((menu = menu->parent)) {
+			if (menu->prompt && menu->prompt->type == P_MENU)
+				fputs("\nendmenu\n", out);
+			if (menu->next) {
+				menu = menu->next;
+				break;
+			}
+		}
+	}
+}
+
+#include "lex.zconf.c"
+#include "util.c"
+#include "confdata.c"
+#include "expr.c"
+#include "symbol.c"
+#include "menu.c"