1261 строка
26 KiB
C
1261 строка
26 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 <regex.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_CONST|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_CONST|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_CONST|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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struct symbol *sym_defconfig_list;
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struct symbol *modules_sym;
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tristate modules_val;
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struct expr *sym_env_list;
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static 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, SYMBOL_CONST));
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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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struct utsname uts;
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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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uname(&uts);
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sym = sym_lookup("UNAME_RELEASE", 0);
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sym->type = S_STRING;
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sym->flags |= SYMBOL_AUTO;
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sym_add_default(sym, uts.release);
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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_env_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_ENV)
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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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static 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 int sym_get_range_val(struct symbol *sym, int base)
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{
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sym_calc_value(sym);
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switch (sym->type) {
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case S_INT:
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base = 10;
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break;
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case S_HEX:
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base = 16;
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break;
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default:
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break;
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}
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return strtol(sym->curr.val, NULL, base);
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}
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static void sym_validate_range(struct symbol *sym)
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{
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struct property *prop;
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int base, val, val2;
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char str[64];
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switch (sym->type) {
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case S_INT:
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base = 10;
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break;
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case S_HEX:
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base = 16;
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break;
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default:
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return;
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}
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prop = sym_get_range_prop(sym);
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if (!prop)
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return;
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val = strtol(sym->curr.val, NULL, base);
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val2 = sym_get_range_val(prop->expr->left.sym, base);
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if (val >= val2) {
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val2 = sym_get_range_val(prop->expr->right.sym, base);
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if (val <= val2)
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return;
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}
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if (sym->type == S_INT)
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sprintf(str, "%d", val2);
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else
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sprintf(str, "0x%x", val2);
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sym->curr.val = strdup(str);
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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 = EXPR_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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/* defaulting to "yes" if no explicit "depends on" are given */
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tri = yes;
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if (sym->dir_dep.expr)
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tri = expr_calc_value(sym->dir_dep.expr);
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if (tri == mod)
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tri = yes;
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if (sym->dir_dep.tri != tri) {
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sym->dir_dep.tri = tri;
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sym_set_changed(sym);
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}
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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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/*
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* Find the default symbol for a choice.
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* First try the default values for the choice symbol
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* Next locate the first visible choice value
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* Return NULL if none was found
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*/
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struct symbol *sym_choice_default(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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/* 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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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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expr_list_for_each_sym(prop->expr, e, def_sym)
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if (def_sym->visible != no)
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return def_sym;
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/* failed to locate any defaults */
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return NULL;
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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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/* first calculate all choice values' visibilities */
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prop = sym_get_choice_prop(sym);
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expr_list_for_each_sym(prop->expr, e, def_sym)
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sym_calc_visibility(def_sym);
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/* is the user choice visible? */
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def_sym = sym->def[S_DEF_USER].val;
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if (def_sym && def_sym->visible != no)
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return def_sym;
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def_sym = sym_choice_default(sym);
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if (def_sym == NULL)
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/* no choice? reset tristate value */
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sym->curr.tri = no;
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return def_sym;
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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 {
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if (sym->visible != no) {
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/* if the symbol is visible use the user value
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* if available, otherwise try the default value
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*/
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sym->flags |= SYMBOL_WRITE;
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if (sym_has_value(sym)) {
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newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri,
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sym->visible);
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goto calc_newval;
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}
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}
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if (sym->rev_dep.tri != no)
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sym->flags |= SYMBOL_WRITE;
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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_AND(expr_calc_value(prop->expr),
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prop->visible.tri);
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}
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}
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calc_newval:
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if (sym->dir_dep.tri == no && sym->rev_dep.tri != no) {
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struct expr *e;
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e = expr_simplify_unmet_dep(sym->rev_dep.expr,
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sym->dir_dep.expr);
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fprintf(stderr, "warning: (");
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expr_fprint(e, stderr);
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fprintf(stderr, ") selects %s which has unmet direct dependencies (",
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sym->name);
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expr_fprint(sym->dir_dep.expr, stderr);
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fprintf(stderr, ")\n");
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expr_free(e);
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}
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newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
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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->def[S_DEF_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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sym_validate_range(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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sym_set_all_changed();
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modules_val = modules_sym->curr.tri;
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}
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}
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if (sym_is_choice(sym)) {
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struct symbol *choice_sym;
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prop = sym_get_choice_prop(sym);
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expr_list_for_each_sym(prop->expr, e, choice_sym) {
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if ((sym->flags & SYMBOL_WRITE) &&
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choice_sym->visible != no)
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choice_sym->flags |= SYMBOL_WRITE;
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if (sym->flags & SYMBOL_CHANGED)
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sym_set_changed(choice_sym);
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}
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}
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if (sym->flags & SYMBOL_AUTO)
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sym->flags &= ~SYMBOL_WRITE;
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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_add_change_count(1);
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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_DEF_USER)) {
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sym->flags |= SYMBOL_DEF_USER;
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sym_set_changed(sym);
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}
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/*
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* setting a choice value also resets the new flag of the choice
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* symbol and all other choice values.
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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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struct property *prop;
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struct expr *e;
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cs->def[S_DEF_USER].val = sym;
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cs->flags |= SYMBOL_DEF_USER;
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prop = sym_get_choice_prop(cs);
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for (e = prop->expr; e; e = e->left.expr) {
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if (e->right.sym->visible != no)
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e->right.sym->flags |= SYMBOL_DEF_USER;
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}
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}
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sym->def[S_DEF_USER].tri = val;
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if (oldval != val)
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sym_clear_all_valid();
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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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signed 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':
|
|
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_DEF_USER)) {
|
|
sym->flags |= SYMBOL_DEF_USER;
|
|
sym_set_changed(sym);
|
|
}
|
|
|
|
oldval = sym->def[S_DEF_USER].val;
|
|
size = strlen(newval) + 1;
|
|
if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) {
|
|
size += 2;
|
|
sym->def[S_DEF_USER].val = val = malloc(size);
|
|
*val++ = '0';
|
|
*val++ = 'x';
|
|
} else if (!oldval || strcmp(oldval, newval))
|
|
sym->def[S_DEF_USER].val = val = malloc(size);
|
|
else
|
|
return true;
|
|
|
|
strcpy(val, newval);
|
|
free((void *)oldval);
|
|
sym_clear_all_valid();
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Find the default value associated to a symbol.
|
|
* For tristate symbol handle the modules=n case
|
|
* in which case "m" becomes "y".
|
|
* If the symbol does not have any default then fallback
|
|
* to the fixed default values.
|
|
*/
|
|
const char *sym_get_string_default(struct symbol *sym)
|
|
{
|
|
struct property *prop;
|
|
struct symbol *ds;
|
|
const char *str;
|
|
tristate val;
|
|
|
|
sym_calc_visibility(sym);
|
|
sym_calc_value(modules_sym);
|
|
val = symbol_no.curr.tri;
|
|
str = symbol_empty.curr.val;
|
|
|
|
/* If symbol has a default value look it up */
|
|
prop = sym_get_default_prop(sym);
|
|
if (prop != NULL) {
|
|
switch (sym->type) {
|
|
case S_BOOLEAN:
|
|
case S_TRISTATE:
|
|
/* The visibility may limit the value from yes => mod */
|
|
val = EXPR_AND(expr_calc_value(prop->expr), prop->visible.tri);
|
|
break;
|
|
default:
|
|
/*
|
|
* The following fails to handle the situation
|
|
* where a default value is further limited by
|
|
* the valid range.
|
|
*/
|
|
ds = prop_get_symbol(prop);
|
|
if (ds != NULL) {
|
|
sym_calc_value(ds);
|
|
str = (const char *)ds->curr.val;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Handle select statements */
|
|
val = EXPR_OR(val, sym->rev_dep.tri);
|
|
|
|
/* transpose mod to yes if modules are not enabled */
|
|
if (val == mod)
|
|
if (!sym_is_choice_value(sym) && modules_sym->curr.tri == no)
|
|
val = yes;
|
|
|
|
/* transpose mod to yes if type is bool */
|
|
if (sym->type == S_BOOLEAN && val == mod)
|
|
val = yes;
|
|
|
|
switch (sym->type) {
|
|
case S_BOOLEAN:
|
|
case S_TRISTATE:
|
|
switch (val) {
|
|
case no: return "n";
|
|
case mod: return "m";
|
|
case yes: return "y";
|
|
}
|
|
case S_INT:
|
|
case S_HEX:
|
|
return str;
|
|
case S_STRING:
|
|
return str;
|
|
case S_OTHER:
|
|
case S_UNKNOWN:
|
|
break;
|
|
}
|
|
return "";
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static unsigned strhash(const char *s)
|
|
{
|
|
/* fnv32 hash */
|
|
unsigned hash = 2166136261U;
|
|
for (; *s; s++)
|
|
hash = (hash ^ *s) * 0x01000193;
|
|
return hash;
|
|
}
|
|
|
|
struct symbol *sym_lookup(const char *name, int flags)
|
|
{
|
|
struct symbol *symbol;
|
|
char *new_name;
|
|
int hash;
|
|
|
|
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;
|
|
}
|
|
}
|
|
hash = strhash(name) % SYMBOL_HASHSIZE;
|
|
|
|
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
|
|
if (symbol->name &&
|
|
!strcmp(symbol->name, name) &&
|
|
(flags ? symbol->flags & flags
|
|
: !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))
|
|
return symbol;
|
|
}
|
|
new_name = strdup(name);
|
|
} else {
|
|
new_name = NULL;
|
|
hash = 0;
|
|
}
|
|
|
|
symbol = malloc(sizeof(*symbol));
|
|
memset(symbol, 0, sizeof(*symbol));
|
|
symbol->name = new_name;
|
|
symbol->type = S_UNKNOWN;
|
|
symbol->flags |= flags;
|
|
|
|
symbol->next = symbol_hash[hash];
|
|
symbol_hash[hash] = symbol;
|
|
|
|
return symbol;
|
|
}
|
|
|
|
struct symbol *sym_find(const char *name)
|
|
{
|
|
struct symbol *symbol = NULL;
|
|
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;
|
|
}
|
|
}
|
|
hash = strhash(name) % SYMBOL_HASHSIZE;
|
|
|
|
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
|
|
if (symbol->name &&
|
|
!strcmp(symbol->name, name) &&
|
|
!(symbol->flags & SYMBOL_CONST))
|
|
break;
|
|
}
|
|
|
|
return symbol;
|
|
}
|
|
|
|
/*
|
|
* Expand symbol's names embedded in the string given in argument. Symbols'
|
|
* name to be expanded shall be prefixed by a '$'. Unknown symbol expands to
|
|
* the empty string.
|
|
*/
|
|
const char *sym_expand_string_value(const char *in)
|
|
{
|
|
const char *src;
|
|
char *res;
|
|
size_t reslen;
|
|
|
|
reslen = strlen(in) + 1;
|
|
res = malloc(reslen);
|
|
res[0] = '\0';
|
|
|
|
while ((src = strchr(in, '$'))) {
|
|
char *p, name[SYMBOL_MAXLENGTH];
|
|
const char *symval = "";
|
|
struct symbol *sym;
|
|
size_t newlen;
|
|
|
|
strncat(res, in, src - in);
|
|
src++;
|
|
|
|
p = name;
|
|
while (isalnum(*src) || *src == '_')
|
|
*p++ = *src++;
|
|
*p = '\0';
|
|
|
|
sym = sym_find(name);
|
|
if (sym != NULL) {
|
|
sym_calc_value(sym);
|
|
symval = sym_get_string_value(sym);
|
|
}
|
|
|
|
newlen = strlen(res) + strlen(symval) + strlen(src) + 1;
|
|
if (newlen > reslen) {
|
|
reslen = newlen;
|
|
res = realloc(res, reslen);
|
|
}
|
|
|
|
strcat(res, symval);
|
|
in = src;
|
|
}
|
|
strcat(res, in);
|
|
|
|
return res;
|
|
}
|
|
|
|
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_calc_value(sym);
|
|
sym_arr[cnt++] = sym;
|
|
}
|
|
if (sym_arr)
|
|
sym_arr[cnt] = NULL;
|
|
regfree(&re);
|
|
|
|
return sym_arr;
|
|
}
|
|
|
|
/*
|
|
* When we check for recursive dependencies we use a stack to save
|
|
* current state so we can print out relevant info to user.
|
|
* The entries are located on the call stack so no need to free memory.
|
|
* Note inser() remove() must always match to properly clear the stack.
|
|
*/
|
|
static struct dep_stack {
|
|
struct dep_stack *prev, *next;
|
|
struct symbol *sym;
|
|
struct property *prop;
|
|
struct expr *expr;
|
|
} *check_top;
|
|
|
|
static void dep_stack_insert(struct dep_stack *stack, struct symbol *sym)
|
|
{
|
|
memset(stack, 0, sizeof(*stack));
|
|
if (check_top)
|
|
check_top->next = stack;
|
|
stack->prev = check_top;
|
|
stack->sym = sym;
|
|
check_top = stack;
|
|
}
|
|
|
|
static void dep_stack_remove(void)
|
|
{
|
|
check_top = check_top->prev;
|
|
if (check_top)
|
|
check_top->next = NULL;
|
|
}
|
|
|
|
/*
|
|
* Called when we have detected a recursive dependency.
|
|
* check_top point to the top of the stact so we use
|
|
* the ->prev pointer to locate the bottom of the stack.
|
|
*/
|
|
static void sym_check_print_recursive(struct symbol *last_sym)
|
|
{
|
|
struct dep_stack *stack;
|
|
struct symbol *sym, *next_sym;
|
|
struct menu *menu = NULL;
|
|
struct property *prop;
|
|
struct dep_stack cv_stack;
|
|
|
|
if (sym_is_choice_value(last_sym)) {
|
|
dep_stack_insert(&cv_stack, last_sym);
|
|
last_sym = prop_get_symbol(sym_get_choice_prop(last_sym));
|
|
}
|
|
|
|
for (stack = check_top; stack != NULL; stack = stack->prev)
|
|
if (stack->sym == last_sym)
|
|
break;
|
|
if (!stack) {
|
|
fprintf(stderr, "unexpected recursive dependency error\n");
|
|
return;
|
|
}
|
|
|
|
for (; stack; stack = stack->next) {
|
|
sym = stack->sym;
|
|
next_sym = stack->next ? stack->next->sym : last_sym;
|
|
prop = stack->prop;
|
|
if (prop == NULL)
|
|
prop = stack->sym->prop;
|
|
|
|
/* for choice values find the menu entry (used below) */
|
|
if (sym_is_choice(sym) || sym_is_choice_value(sym)) {
|
|
for (prop = sym->prop; prop; prop = prop->next) {
|
|
menu = prop->menu;
|
|
if (prop->menu)
|
|
break;
|
|
}
|
|
}
|
|
if (stack->sym == last_sym)
|
|
fprintf(stderr, "%s:%d:error: recursive dependency detected!\n",
|
|
prop->file->name, prop->lineno);
|
|
if (stack->expr) {
|
|
fprintf(stderr, "%s:%d:\tsymbol %s %s value contains %s\n",
|
|
prop->file->name, prop->lineno,
|
|
sym->name ? sym->name : "<choice>",
|
|
prop_get_type_name(prop->type),
|
|
next_sym->name ? next_sym->name : "<choice>");
|
|
} else if (stack->prop) {
|
|
fprintf(stderr, "%s:%d:\tsymbol %s depends on %s\n",
|
|
prop->file->name, prop->lineno,
|
|
sym->name ? sym->name : "<choice>",
|
|
next_sym->name ? next_sym->name : "<choice>");
|
|
} else if (sym_is_choice(sym)) {
|
|
fprintf(stderr, "%s:%d:\tchoice %s contains symbol %s\n",
|
|
menu->file->name, menu->lineno,
|
|
sym->name ? sym->name : "<choice>",
|
|
next_sym->name ? next_sym->name : "<choice>");
|
|
} else if (sym_is_choice_value(sym)) {
|
|
fprintf(stderr, "%s:%d:\tsymbol %s is part of choice %s\n",
|
|
menu->file->name, menu->lineno,
|
|
sym->name ? sym->name : "<choice>",
|
|
next_sym->name ? next_sym->name : "<choice>");
|
|
} else {
|
|
fprintf(stderr, "%s:%d:\tsymbol %s is selected by %s\n",
|
|
prop->file->name, prop->lineno,
|
|
sym->name ? sym->name : "<choice>",
|
|
next_sym->name ? next_sym->name : "<choice>");
|
|
}
|
|
}
|
|
|
|
if (check_top == &cv_stack)
|
|
dep_stack_remove();
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
/* return NULL when dependencies are OK */
|
|
static struct symbol *sym_check_sym_deps(struct symbol *sym)
|
|
{
|
|
struct symbol *sym2;
|
|
struct property *prop;
|
|
struct dep_stack stack;
|
|
|
|
dep_stack_insert(&stack, sym);
|
|
|
|
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;
|
|
stack.prop = prop;
|
|
sym2 = sym_check_expr_deps(prop->visible.expr);
|
|
if (sym2)
|
|
break;
|
|
if (prop->type != P_DEFAULT || sym_is_choice(sym))
|
|
continue;
|
|
stack.expr = prop->expr;
|
|
sym2 = sym_check_expr_deps(prop->expr);
|
|
if (sym2)
|
|
break;
|
|
stack.expr = NULL;
|
|
}
|
|
|
|
out:
|
|
dep_stack_remove();
|
|
|
|
return sym2;
|
|
}
|
|
|
|
static struct symbol *sym_check_choice_deps(struct symbol *choice)
|
|
{
|
|
struct symbol *sym, *sym2;
|
|
struct property *prop;
|
|
struct expr *e;
|
|
struct dep_stack stack;
|
|
|
|
dep_stack_insert(&stack, choice);
|
|
|
|
prop = sym_get_choice_prop(choice);
|
|
expr_list_for_each_sym(prop->expr, e, sym)
|
|
sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
|
|
|
|
choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
|
|
sym2 = sym_check_sym_deps(choice);
|
|
choice->flags &= ~SYMBOL_CHECK;
|
|
if (sym2)
|
|
goto out;
|
|
|
|
expr_list_for_each_sym(prop->expr, e, sym) {
|
|
sym2 = sym_check_sym_deps(sym);
|
|
if (sym2)
|
|
break;
|
|
}
|
|
out:
|
|
expr_list_for_each_sym(prop->expr, e, sym)
|
|
sym->flags &= ~SYMBOL_CHECK;
|
|
|
|
if (sym2 && sym_is_choice_value(sym2) &&
|
|
prop_get_symbol(sym_get_choice_prop(sym2)) == choice)
|
|
sym2 = choice;
|
|
|
|
dep_stack_remove();
|
|
|
|
return sym2;
|
|
}
|
|
|
|
struct symbol *sym_check_deps(struct symbol *sym)
|
|
{
|
|
struct symbol *sym2;
|
|
struct property *prop;
|
|
|
|
if (sym->flags & SYMBOL_CHECK) {
|
|
sym_check_print_recursive(sym);
|
|
return sym;
|
|
}
|
|
if (sym->flags & SYMBOL_CHECKED)
|
|
return NULL;
|
|
|
|
if (sym_is_choice_value(sym)) {
|
|
struct dep_stack stack;
|
|
|
|
/* for choice groups start the check with main choice symbol */
|
|
dep_stack_insert(&stack, sym);
|
|
prop = sym_get_choice_prop(sym);
|
|
sym2 = sym_check_deps(prop_get_symbol(prop));
|
|
dep_stack_remove();
|
|
} else if (sym_is_choice(sym)) {
|
|
sym2 = sym_check_choice_deps(sym);
|
|
} else {
|
|
sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
|
|
sym2 = sym_check_sym_deps(sym);
|
|
sym->flags &= ~SYMBOL_CHECK;
|
|
}
|
|
|
|
if (sym2 && sym2 == sym)
|
|
sym2 = NULL;
|
|
|
|
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_LIST))
|
|
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_ENV:
|
|
return "env";
|
|
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_SYMBOL:
|
|
return "symbol";
|
|
case P_UNKNOWN:
|
|
break;
|
|
}
|
|
return "unknown";
|
|
}
|
|
|
|
static void prop_add_env(const char *env)
|
|
{
|
|
struct symbol *sym, *sym2;
|
|
struct property *prop;
|
|
char *p;
|
|
|
|
sym = current_entry->sym;
|
|
sym->flags |= SYMBOL_AUTO;
|
|
for_all_properties(sym, prop, P_ENV) {
|
|
sym2 = prop_get_symbol(prop);
|
|
if (strcmp(sym2->name, env))
|
|
menu_warn(current_entry, "redefining environment symbol from %s",
|
|
sym2->name);
|
|
return;
|
|
}
|
|
|
|
prop = prop_alloc(P_ENV, sym);
|
|
prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST));
|
|
|
|
sym_env_list = expr_alloc_one(E_LIST, sym_env_list);
|
|
sym_env_list->right.sym = sym;
|
|
|
|
p = getenv(env);
|
|
if (p)
|
|
sym_add_default(sym, p);
|
|
else
|
|
menu_warn(current_entry, "environment variable %s undefined", env);
|
|
}
|