busybox/scripts/config/confdata.c
Rob Landley 7a43bd07e6 Zap sysdeps directory, moving Config.in and defconfig to top of tree.
(Busybox should not be system dependent enough to have different default
configurations for different platforms.  We're not a kernel.)
2006-01-20 17:47:09 +00:00

457 lines
9.4 KiB
C

/*
* 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 <unistd.h>
#define LKC_DIRECT_LINK
#include "lkc.h"
const char conf_def_filename[] = ".config";
const char conf_defname[] = "defconfig";
const char *conf_confnames[] = {
".config",
conf_defname,
NULL,
};
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(const char *name)
{
FILE *in = NULL;
char line[1024];
char *p, *p2;
int lineno = 0;
struct symbol *sym;
struct property *prop;
struct expr *e;
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;
for_all_symbols(i, sym) {
sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
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)) {
lineno++;
sym = NULL;
switch (line[0]) {
case '#':
if (line[1]!=' ')
continue;
p = strchr(line + 2, ' ');
if (!p)
continue;
*p++ = 0;
if (strncmp(p, "is not set", 10))
continue;
sym = sym_find(line + 2);
if (!sym) {
fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 2);
break;
}
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
sym->user.tri = no;
sym->flags &= ~SYMBOL_NEW;
break;
default:
;
}
break;
case 'A' ... 'Z':
p = strchr(line, '=');
if (!p)
continue;
*p++ = 0;
p2 = strchr(p, '\n');
if (p2)
*p2 = 0;
sym = sym_find(line);
if (!sym) {
fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line);
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;
}
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) {
fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
exit(1);
}
case S_INT:
case S_HEX:
if (sym_string_valid(sym, p)) {
sym->user.val = strdup(p);
sym->flags &= ~SYMBOL_NEW;
} else {
fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
exit(1);
}
break;
default:
;
}
break;
case '\n':
break;
default:
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)
/* warn? */;
break;
case yes:
if (cs->user.tri != no)
/* warn? */;
cs->user.val = sym;
break;
}
cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
cs->flags &= ~SYMBOL_NEW;
}
}
fclose(in);
if (modules_sym)
sym_calc_value(modules_sym);
for_all_symbols(i, sym) {
sym_calc_value(sym);
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;
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 = 1;
return 0;
}
struct menu *next_menu(struct menu *menu)
{
if (menu->list) return menu->list;
do {
if (menu->next) {
menu = menu->next;
break;
}
} while ((menu = menu->parent));
return menu;
}
#define SYMBOL_FORCEWRITE (1<<31)
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;
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;
}
fprintf(out, "#\n"
"# Automatically generated make config: don't edit\n"
"#\n");
if (out_h) {
fprintf(out_h, "/*\n"
" * Automatically generated header file: don't edit\n"
" */\n\n"
"/* Version Number */\n"
"#define BB_VER \"%s\"\n"
"#define BB_BT \"%s\"\n",
getenv("VERSION"),
getenv("BUILDTIME"));
if (getenv("EXTRA_VERSION"))
fprintf(out_h, "#define BB_EXTRA_VERSION \"%s\"\n",
getenv("EXTRA_VERSION"));
fprintf(out_h, "\n");
}
if (!sym_change_count)
sym_clear_all_valid();
/* Force write of all non-duplicate symbols. */
/* Write out everything by default. */
for(menu = rootmenu.list; menu; menu = next_menu(menu))
if (menu->sym) menu->sym->flags |= SYMBOL_FORCEWRITE;
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_FORCEWRITE))
goto next;
sym->flags &= ~SYMBOL_FORCEWRITE;
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, "# %s is not set\n", sym->name);
if (out_h)
fprintf(out_h, "#undef %s\n", sym->name);
break;
case mod:
#if 0
fprintf(out, "%s=m\n", sym->name);
if (out_h)
fprintf(out_h, "#define %s_MODULE 1\n", sym->name);
#endif
break;
case yes:
fprintf(out, "%s=y\n", sym->name);
if (out_h)
fprintf(out_h, "#define %s 1\n", sym->name);
break;
}
break;
case S_STRING:
// fix me
str = sym_get_string_value(sym);
fprintf(out, "%s=\"", sym->name);
if (out_h)
fprintf(out_h, "#define %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, "%s=%s\n", sym->name, *str ? str : "0");
if (out_h)
fprintf(out_h, "#define %s 0x%s\n", sym->name, str);
break;
}
case S_INT:
str = sym_get_string_value(sym);
fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
if (out_h)
fprintf(out_h, "#define %s %s\n", sym->name, str);
break;
}
}
next:
menu = next_menu(menu);
}
fclose(out);
if (out_h) {
fclose(out_h);
rename(".tmpconfig.h", "include/config.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;
}