mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-08-20 07:40:14 +03:00
git-svn-id: svn://svn.openwrt.org/openwrt/trunk/openwrt@197 3c298f89-4303-0410-b956-a3cf2f4a3e73
772 lines
15 KiB
C
772 lines
15 KiB
C
/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <ctype.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/utsname.h>
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#define LKC_DIRECT_LINK
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#include "lkc.h"
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struct symbol symbol_yes = {
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.name = "y",
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.curr = { "y", yes },
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.flags = SYMBOL_YES|SYMBOL_VALID,
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}, symbol_mod = {
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.name = "m",
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.curr = { "m", mod },
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.flags = SYMBOL_MOD|SYMBOL_VALID,
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}, symbol_no = {
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.name = "n",
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.curr = { "n", no },
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.flags = SYMBOL_NO|SYMBOL_VALID,
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}, symbol_empty = {
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.name = "",
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.curr = { "", no },
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.flags = SYMBOL_VALID,
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};
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int sym_change_count;
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struct symbol *modules_sym;
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tristate modules_val;
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void sym_add_default(struct symbol *sym, const char *def)
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{
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struct property *prop = prop_alloc(P_DEFAULT, sym);
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prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
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}
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void sym_init(void)
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{
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struct symbol *sym;
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char *p;
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static bool inited = false;
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if (inited)
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return;
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inited = true;
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sym = sym_lookup("VERSION", 0);
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sym->type = S_STRING;
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sym->flags |= SYMBOL_AUTO;
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p = getenv("VERSION");
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if (p)
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sym_add_default(sym, p);
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sym = sym_lookup("TARGET_ARCH", 0);
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sym->type = S_STRING;
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sym->flags |= SYMBOL_AUTO;
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p = getenv("TARGET_ARCH");
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if (p)
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sym_add_default(sym, p);
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}
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enum symbol_type sym_get_type(struct symbol *sym)
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{
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enum symbol_type type = sym->type;
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if (type == S_TRISTATE) {
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if (sym_is_choice_value(sym) && sym->visible == yes)
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type = S_BOOLEAN;
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else if (modules_val == no)
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type = S_BOOLEAN;
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}
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return type;
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}
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const char *sym_type_name(enum symbol_type type)
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{
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switch (type) {
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case S_BOOLEAN:
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return "boolean";
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case S_TRISTATE:
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return "tristate";
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case S_INT:
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return "integer";
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case S_HEX:
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return "hex";
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case S_STRING:
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return "string";
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case S_UNKNOWN:
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return "unknown";
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case S_OTHER:
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break;
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}
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return "???";
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}
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struct property *sym_get_choice_prop(struct symbol *sym)
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{
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struct property *prop;
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for_all_choices(sym, prop)
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return prop;
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return NULL;
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}
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struct property *sym_get_default_prop(struct symbol *sym)
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{
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struct property *prop;
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for_all_defaults(sym, prop) {
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prop->visible.tri = expr_calc_value(prop->visible.expr);
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if (prop->visible.tri != no)
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return prop;
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}
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return NULL;
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}
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struct property *sym_get_range_prop(struct symbol *sym)
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{
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struct property *prop;
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for_all_properties(sym, prop, P_RANGE) {
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prop->visible.tri = expr_calc_value(prop->visible.expr);
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if (prop->visible.tri != no)
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return prop;
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}
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return NULL;
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}
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static void sym_calc_visibility(struct symbol *sym)
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{
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struct property *prop;
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tristate tri;
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/* any prompt visible? */
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tri = no;
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for_all_prompts(sym, prop) {
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prop->visible.tri = expr_calc_value(prop->visible.expr);
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tri = E_OR(tri, prop->visible.tri);
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}
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if (tri == mod && (sym->type != S_TRISTATE || modules_val == no))
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tri = yes;
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if (sym->visible != tri) {
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sym->visible = tri;
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sym_set_changed(sym);
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}
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if (sym_is_choice_value(sym))
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return;
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tri = no;
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if (sym->rev_dep.expr)
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tri = expr_calc_value(sym->rev_dep.expr);
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if (tri == mod && sym_get_type(sym) == S_BOOLEAN)
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tri = yes;
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if (sym->rev_dep.tri != tri) {
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sym->rev_dep.tri = tri;
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sym_set_changed(sym);
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}
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}
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static struct symbol *sym_calc_choice(struct symbol *sym)
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{
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struct symbol *def_sym;
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struct property *prop;
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struct expr *e;
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/* is the user choice visible? */
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def_sym = sym->user.val;
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if (def_sym) {
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sym_calc_visibility(def_sym);
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if (def_sym->visible != no)
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return def_sym;
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}
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/* any of the defaults visible? */
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for_all_defaults(sym, prop) {
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prop->visible.tri = expr_calc_value(prop->visible.expr);
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if (prop->visible.tri == no)
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continue;
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def_sym = prop_get_symbol(prop);
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sym_calc_visibility(def_sym);
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if (def_sym->visible != no)
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return def_sym;
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}
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/* just get the first visible value */
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prop = sym_get_choice_prop(sym);
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for (e = prop->expr; e; e = e->left.expr) {
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def_sym = e->right.sym;
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sym_calc_visibility(def_sym);
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if (def_sym->visible != no)
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return def_sym;
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}
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/* no choice? reset tristate value */
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sym->curr.tri = no;
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return NULL;
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}
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void sym_calc_value(struct symbol *sym)
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{
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struct symbol_value newval, oldval;
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struct property *prop;
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struct expr *e;
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if (!sym)
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return;
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if (sym->flags & SYMBOL_VALID)
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return;
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sym->flags |= SYMBOL_VALID;
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oldval = sym->curr;
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switch (sym->type) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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newval = symbol_empty.curr;
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break;
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case S_BOOLEAN:
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case S_TRISTATE:
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newval = symbol_no.curr;
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break;
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default:
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sym->curr.val = sym->name;
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sym->curr.tri = no;
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return;
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}
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if (!sym_is_choice_value(sym))
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sym->flags &= ~SYMBOL_WRITE;
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sym_calc_visibility(sym);
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/* set default if recursively called */
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sym->curr = newval;
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switch (sym_get_type(sym)) {
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case S_BOOLEAN:
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case S_TRISTATE:
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if (sym_is_choice_value(sym) && sym->visible == yes) {
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prop = sym_get_choice_prop(sym);
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newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
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} else if (E_OR(sym->visible, sym->rev_dep.tri) != no) {
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sym->flags |= SYMBOL_WRITE;
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if (sym_has_value(sym))
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newval.tri = sym->user.tri;
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else if (!sym_is_choice(sym)) {
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prop = sym_get_default_prop(sym);
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if (prop)
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newval.tri = expr_calc_value(prop->expr);
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}
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newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri);
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} else if (!sym_is_choice(sym)) {
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prop = sym_get_default_prop(sym);
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if (prop) {
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sym->flags |= SYMBOL_WRITE;
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newval.tri = expr_calc_value(prop->expr);
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}
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}
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if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
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newval.tri = yes;
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break;
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case S_STRING:
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case S_HEX:
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case S_INT:
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if (sym->visible != no) {
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sym->flags |= SYMBOL_WRITE;
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if (sym_has_value(sym)) {
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newval.val = sym->user.val;
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break;
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}
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}
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prop = sym_get_default_prop(sym);
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if (prop) {
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struct symbol *ds = prop_get_symbol(prop);
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if (ds) {
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sym->flags |= SYMBOL_WRITE;
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sym_calc_value(ds);
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newval.val = ds->curr.val;
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}
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}
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break;
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default:
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;
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}
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sym->curr = newval;
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if (sym_is_choice(sym) && newval.tri == yes)
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sym->curr.val = sym_calc_choice(sym);
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if (memcmp(&oldval, &sym->curr, sizeof(oldval)))
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sym_set_changed(sym);
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if (modules_sym == sym)
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modules_val = modules_sym->curr.tri;
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if (sym_is_choice(sym)) {
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int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE);
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prop = sym_get_choice_prop(sym);
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for (e = prop->expr; e; e = e->left.expr) {
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e->right.sym->flags |= flags;
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if (flags & SYMBOL_CHANGED)
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sym_set_changed(e->right.sym);
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}
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}
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}
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void sym_clear_all_valid(void)
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{
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struct symbol *sym;
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int i;
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for_all_symbols(i, sym)
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sym->flags &= ~SYMBOL_VALID;
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sym_change_count++;
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if (modules_sym)
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sym_calc_value(modules_sym);
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}
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void sym_set_changed(struct symbol *sym)
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{
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struct property *prop;
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sym->flags |= SYMBOL_CHANGED;
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for (prop = sym->prop; prop; prop = prop->next) {
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if (prop->menu)
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prop->menu->flags |= MENU_CHANGED;
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}
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}
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void sym_set_all_changed(void)
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{
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struct symbol *sym;
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int i;
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for_all_symbols(i, sym)
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sym_set_changed(sym);
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}
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bool sym_tristate_within_range(struct symbol *sym, tristate val)
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{
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int type = sym_get_type(sym);
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if (sym->visible == no)
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return false;
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if (type != S_BOOLEAN && type != S_TRISTATE)
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return false;
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if (type == S_BOOLEAN && val == mod)
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return false;
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if (sym->visible <= sym->rev_dep.tri)
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return false;
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if (sym_is_choice_value(sym) && sym->visible == yes)
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return val == yes;
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return val >= sym->rev_dep.tri && val <= sym->visible;
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}
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bool sym_set_tristate_value(struct symbol *sym, tristate val)
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{
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tristate oldval = sym_get_tristate_value(sym);
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if (oldval != val && !sym_tristate_within_range(sym, val))
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return false;
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if (sym->flags & SYMBOL_NEW) {
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sym->flags &= ~SYMBOL_NEW;
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sym_set_changed(sym);
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}
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if (sym_is_choice_value(sym) && val == yes) {
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struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
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cs->user.val = sym;
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cs->flags &= ~SYMBOL_NEW;
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}
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sym->user.tri = val;
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if (oldval != val) {
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sym_clear_all_valid();
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if (sym == modules_sym)
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sym_set_all_changed();
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}
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return true;
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}
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tristate sym_toggle_tristate_value(struct symbol *sym)
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{
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tristate oldval, newval;
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oldval = newval = sym_get_tristate_value(sym);
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do {
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switch (newval) {
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case no:
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newval = mod;
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break;
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case mod:
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newval = yes;
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break;
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case yes:
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newval = no;
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break;
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}
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if (sym_set_tristate_value(sym, newval))
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break;
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} while (oldval != newval);
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return newval;
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}
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bool sym_string_valid(struct symbol *sym, const char *str)
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{
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char ch;
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switch (sym->type) {
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case S_STRING:
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return true;
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case S_INT:
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ch = *str++;
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if (ch == '-')
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ch = *str++;
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if (!isdigit(ch))
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return false;
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if (ch == '0' && *str != 0)
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return false;
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while ((ch = *str++)) {
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if (!isdigit(ch))
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return false;
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}
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return true;
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case S_HEX:
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if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
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str += 2;
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ch = *str++;
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do {
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if (!isxdigit(ch))
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return false;
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} while ((ch = *str++));
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return true;
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case S_BOOLEAN:
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case S_TRISTATE:
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switch (str[0]) {
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case 'y': case 'Y':
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case 'm': case 'M':
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case 'n': case 'N':
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return true;
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}
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return false;
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default:
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return false;
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}
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}
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bool sym_string_within_range(struct symbol *sym, const char *str)
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{
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struct property *prop;
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int val;
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switch (sym->type) {
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case S_STRING:
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return sym_string_valid(sym, str);
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case S_INT:
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if (!sym_string_valid(sym, str))
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return false;
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prop = sym_get_range_prop(sym);
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if (!prop)
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return true;
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val = strtol(str, NULL, 10);
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return val >= strtol(prop->expr->left.sym->name, NULL, 10) &&
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val <= strtol(prop->expr->right.sym->name, NULL, 10);
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case S_HEX:
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if (!sym_string_valid(sym, str))
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return false;
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prop = sym_get_range_prop(sym);
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if (!prop)
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return true;
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val = strtol(str, NULL, 16);
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return val >= strtol(prop->expr->left.sym->name, NULL, 16) &&
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val <= strtol(prop->expr->right.sym->name, NULL, 16);
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case S_BOOLEAN:
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case S_TRISTATE:
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switch (str[0]) {
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case 'y': case 'Y':
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return sym_tristate_within_range(sym, yes);
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case 'm': case 'M':
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return sym_tristate_within_range(sym, mod);
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case 'n': case 'N':
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return sym_tristate_within_range(sym, no);
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}
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return false;
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default:
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return false;
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}
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}
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bool sym_set_string_value(struct symbol *sym, const char *newval)
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{
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const char *oldval;
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char *val;
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int size;
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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switch (newval[0]) {
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case 'y': case 'Y':
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return sym_set_tristate_value(sym, yes);
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case 'm': case 'M':
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return sym_set_tristate_value(sym, mod);
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case 'n': case 'N':
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return sym_set_tristate_value(sym, no);
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}
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return false;
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default:
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;
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}
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if (!sym_string_within_range(sym, newval))
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return false;
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if (sym->flags & SYMBOL_NEW) {
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sym->flags &= ~SYMBOL_NEW;
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sym_set_changed(sym);
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}
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oldval = sym->user.val;
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size = strlen(newval) + 1;
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if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
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size += 2;
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sym->user.val = val = malloc(size);
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*val++ = '0';
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*val++ = 'x';
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} else if (!oldval || strcmp(oldval, newval))
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sym->user.val = val = malloc(size);
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else
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return true;
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strcpy(val, newval);
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free((void *)oldval);
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sym_clear_all_valid();
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return true;
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}
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const char *sym_get_string_value(struct symbol *sym)
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{
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tristate val;
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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val = sym_get_tristate_value(sym);
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switch (val) {
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case no:
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return "n";
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case mod:
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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_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_DONE)
|
|
return NULL;
|
|
if (sym->flags & SYMBOL_CHECK) {
|
|
printf("Warning! Found recursive dependency: %s", sym->name);
|
|
return sym;
|
|
}
|
|
|
|
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);
|
|
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";
|
|
}
|