busybox/scripts/config/confdata.c
Eric Andersen c9f20d9fb9 Yet another major rework of the BusyBox config system, using the considerably
modified Kbuild system I put into uClibc.  With this, there should be no more
need to modify Rules.mak since I've moved all the interesting options into the
config system.  I think I've got everything updated, but you never know, I may
have made some mistakes, so watch closely.
 -Erik
2002-12-05 08:41:41 +00:00

372 lines
7.4 KiB
C

/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
* Released under the terms of the GNU GPL v2.0.
*
* Allow 'n' as a symbol value.
* 2002-11-05 Petr Baudis <pasky@ucw.cz>
*/
#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[] = "extra/Configs/Config.$TARGET_ARCH.default";
const char *conf_confnames[] = {
".config",
conf_defname,
NULL,
};
static char *conf_expand_value(const char *in)
{
struct symbol *sym;
const char *src;
static char res_value[SYMBOL_MAXLENGTH];
char *dst, name[SYMBOL_MAXLENGTH];
res_value[0] = 0;
dst = name;
while ((src = strchr(in, '$'))) {
strncat(res_value, in, src - in);
src++;
dst = name;
while (isalnum((int)*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)
{
return conf_expand_value(conf_defname);
}
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 = fopen(name, "r");
} else {
const char **names = conf_confnames;
while ((name = *names++)) {
name = conf_expand_value(name);
in = fopen(name, "r");
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 (S_VAL(sym->def))
free(S_VAL(sym->def));
default:
S_VAL(sym->def) = NULL;
S_TRI(sym->def) = no;
;
}
}
while (fgets(line, sizeof(line), in)) {
lineno++;
switch (line[0]) {
case '\n':
break;
case ' ':
break;
case '#':
p = strchr(line, ' ');
if (!p)
continue;
*p++ = 0;
p = strchr(p, ' ');
if (!p)
continue;
*p++ = 0;
if (strncmp(p, "is not set", 10))
continue;
sym = sym_lookup(line+2, 0);
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
sym->def = symbol_no.curr;
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') {
S_TRI(sym->def) = mod;
sym->flags &= ~SYMBOL_NEW;
break;
}
case S_BOOLEAN:
if (p[0] == 'y') {
S_TRI(sym->def) = yes;
sym->flags &= ~SYMBOL_NEW;
break;
}
if (p[0] == 'n') {
S_TRI(sym->def) = 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));
}
case S_INT:
case S_HEX:
if (sym_string_valid(sym, p)) {
S_VAL(sym->def) = strdup(p);
sym->flags &= ~SYMBOL_NEW;
} else
fprintf(stderr, "%s:%d:symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
break;
default:
;
}
if (sym_is_choice_value(sym)) {
prop = sym_get_choice_prop(sym);
switch (S_TRI(sym->def)) {
case mod:
if (S_TRI(prop->def->def) == yes)
/* warn? */;
break;
case yes:
if (S_TRI(prop->def->def) != no)
/* warn? */;
S_VAL(prop->def->def) = sym;
break;
case no:
break;
}
S_TRI(prop->def->def) = S_TRI(sym->def);
}
break;
default:
continue;
}
}
fclose(in);
for_all_symbols(i, sym) {
if (!sym_is_choice(sym))
continue;
prop = sym_get_choice_prop(sym);
for (e = prop->dep; e; e = e->left.expr)
sym->flags |= e->right.sym->flags & SYMBOL_NEW;
sym->flags &= ~SYMBOL_NEW;
}
sym_change_count = 1;
return 0;
}
int conf_write(const char *name)
{
FILE *out, *out_h;
struct symbol *sym;
struct menu *menu;
char oldname[128];
int type, l;
const char *str;
out = fopen(".tmpconfig", "w");
if (!out)
return 1;
out_h = fopen(".tmpconfig.h", "w");
if (!out_h)
return 1;
fprintf(out, "#\n"
"# Automatically generated make config: don't edit\n"
"#\n");
fprintf(out_h, "/*\n"
" * Automatically generated header file: don't edit\n"
" */\n\n"
"#define AUTOCONF_INCLUDED\n\n"
"/* Version Number */\n"
"#define BB_VER \"%s\"\n"
"#define BB_BT \"%s\"\n\n",
getenv("VERSION"),
getenv("BUILDTIME")
);
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);
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 (S_TRI(modules_sym->curr) == 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);
fprintf(out_h, "#undef %s\n", sym->name);
break;
case mod:
#if 0
fprintf(out, "%s=m\n", sym->name);
fprintf(out_h, "#define __%s__MODULE 1\n", sym->name);
#endif
break;
case yes:
fprintf(out, "%s=y\n", sym->name);
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);
fprintf(out_h, "#define %s \"", sym->name);
do {
l = strcspn(str, "\"\\");
if (l) {
fwrite(str, l, 1, out);
fwrite(str, l, 1, out_h);
}
str += l;
while (*str == '\\' || *str == '"') {
fprintf(out, "\\%c", *str);
fprintf(out_h, "\\%c", *str);
str++;
}
} while (*str);
fputs("\"\n", out);
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);
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);
fprintf(out_h, "#define %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);
fclose(out_h);
if (!name) {
rename(".tmpconfig.h", "include/config.h");
name = conf_def_filename;
file_write_dep(NULL);
} else
unlink(".tmpconfig.h");
sprintf(oldname, "%s.old", name);
rename(name, oldname);
if (rename(".tmpconfig", name))
return 1;
sym_change_count = 0;
return 0;
}