[1765] | 1 | /* |
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| 2 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
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| 3 | * Released under the terms of the GNU GPL v2.0. |
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| 4 | */ |
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| 5 | |
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| 6 | #include <ctype.h> |
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| 7 | #include <stdlib.h> |
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| 8 | #include <string.h> |
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| 9 | #include <regex.h> |
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| 10 | #include <sys/utsname.h> |
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| 11 | |
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| 12 | #define LKC_DIRECT_LINK |
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| 13 | #include "lkc.h" |
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| 14 | |
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| 15 | struct symbol symbol_yes = { |
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| 16 | .name = "y", |
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| 17 | .curr = { "y", yes }, |
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| 18 | .flags = SYMBOL_YES|SYMBOL_VALID, |
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| 19 | }, symbol_mod = { |
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| 20 | .name = "m", |
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| 21 | .curr = { "m", mod }, |
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| 22 | .flags = SYMBOL_MOD|SYMBOL_VALID, |
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| 23 | }, symbol_no = { |
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| 24 | .name = "n", |
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| 25 | .curr = { "n", no }, |
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| 26 | .flags = SYMBOL_NO|SYMBOL_VALID, |
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| 27 | }, symbol_empty = { |
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| 28 | .name = "", |
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| 29 | .curr = { "", no }, |
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| 30 | .flags = SYMBOL_VALID, |
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| 31 | }; |
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| 32 | |
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| 33 | int sym_change_count; |
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| 34 | struct symbol *modules_sym; |
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| 35 | tristate modules_val; |
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| 36 | |
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| 37 | void sym_add_default(struct symbol *sym, const char *def) |
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| 38 | { |
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| 39 | struct property *prop = prop_alloc(P_DEFAULT, sym); |
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| 40 | |
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| 41 | prop->expr = expr_alloc_symbol(sym_lookup(def, 1)); |
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| 42 | } |
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| 43 | |
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| 44 | void sym_init(void) |
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| 45 | { |
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| 46 | struct symbol *sym; |
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| 47 | struct utsname uts; |
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| 48 | char *p; |
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| 49 | static bool inited = false; |
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| 50 | |
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| 51 | if (inited) |
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| 52 | return; |
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| 53 | inited = true; |
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| 54 | |
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| 55 | uname(&uts); |
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| 56 | |
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| 57 | sym = sym_lookup("ARCH", 0); |
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| 58 | sym->type = S_STRING; |
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| 59 | sym->flags |= SYMBOL_AUTO; |
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| 60 | p = getenv("ARCH"); |
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| 61 | if (p) |
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| 62 | sym_add_default(sym, p); |
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| 63 | |
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| 64 | sym = sym_lookup("KERNELVERSION", 0); |
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| 65 | sym->type = S_STRING; |
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| 66 | sym->flags |= SYMBOL_AUTO; |
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| 67 | p = getenv("KERNELVERSION"); |
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| 68 | if (p) |
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| 69 | sym_add_default(sym, p); |
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| 70 | |
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| 71 | sym = sym_lookup("UNAME_RELEASE", 0); |
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| 72 | sym->type = S_STRING; |
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| 73 | sym->flags |= SYMBOL_AUTO; |
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| 74 | sym_add_default(sym, uts.release); |
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| 75 | } |
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| 76 | |
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| 77 | enum symbol_type sym_get_type(struct symbol *sym) |
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| 78 | { |
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| 79 | enum symbol_type type = sym->type; |
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| 80 | |
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| 81 | if (type == S_TRISTATE) { |
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| 82 | if (sym_is_choice_value(sym) && sym->visible == yes) |
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| 83 | type = S_BOOLEAN; |
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| 84 | else if (modules_val == no) |
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| 85 | type = S_BOOLEAN; |
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| 86 | } |
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| 87 | return type; |
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| 88 | } |
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| 89 | |
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| 90 | const char *sym_type_name(enum symbol_type type) |
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| 91 | { |
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| 92 | switch (type) { |
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| 93 | case S_BOOLEAN: |
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| 94 | return "boolean"; |
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| 95 | case S_TRISTATE: |
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| 96 | return "tristate"; |
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| 97 | case S_INT: |
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| 98 | return "integer"; |
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| 99 | case S_HEX: |
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| 100 | return "hex"; |
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| 101 | case S_STRING: |
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| 102 | return "string"; |
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| 103 | case S_UNKNOWN: |
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| 104 | return "unknown"; |
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| 105 | case S_OTHER: |
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| 106 | break; |
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| 107 | } |
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| 108 | return "???"; |
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| 109 | } |
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| 110 | |
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| 111 | struct property *sym_get_choice_prop(struct symbol *sym) |
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| 112 | { |
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| 113 | struct property *prop; |
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| 114 | |
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| 115 | for_all_choices(sym, prop) |
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| 116 | return prop; |
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| 117 | return NULL; |
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| 118 | } |
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| 119 | |
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| 120 | struct property *sym_get_default_prop(struct symbol *sym) |
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| 121 | { |
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| 122 | struct property *prop; |
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| 123 | |
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| 124 | for_all_defaults(sym, prop) { |
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| 125 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
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| 126 | if (prop->visible.tri != no) |
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| 127 | return prop; |
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| 128 | } |
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| 129 | return NULL; |
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| 130 | } |
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| 131 | |
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| 132 | struct property *sym_get_range_prop(struct symbol *sym) |
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| 133 | { |
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| 134 | struct property *prop; |
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| 135 | |
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| 136 | for_all_properties(sym, prop, P_RANGE) { |
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| 137 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
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| 138 | if (prop->visible.tri != no) |
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| 139 | return prop; |
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| 140 | } |
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| 141 | return NULL; |
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| 142 | } |
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| 143 | |
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| 144 | static int sym_get_range_val(struct symbol *sym, int base) |
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| 145 | { |
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| 146 | sym_calc_value(sym); |
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| 147 | switch (sym->type) { |
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| 148 | case S_INT: |
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| 149 | base = 10; |
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| 150 | break; |
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| 151 | case S_HEX: |
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| 152 | base = 16; |
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| 153 | break; |
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| 154 | default: |
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| 155 | break; |
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| 156 | } |
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| 157 | return strtol(sym->curr.val, NULL, base); |
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| 158 | } |
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| 159 | |
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| 160 | static void sym_validate_range(struct symbol *sym) |
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| 161 | { |
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| 162 | struct property *prop; |
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| 163 | int base, val, val2; |
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| 164 | char str[64]; |
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| 165 | |
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| 166 | switch (sym->type) { |
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| 167 | case S_INT: |
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| 168 | base = 10; |
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| 169 | break; |
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| 170 | case S_HEX: |
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| 171 | base = 16; |
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| 172 | break; |
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| 173 | default: |
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| 174 | return; |
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| 175 | } |
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| 176 | prop = sym_get_range_prop(sym); |
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| 177 | if (!prop) |
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| 178 | return; |
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| 179 | val = strtol(sym->curr.val, NULL, base); |
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| 180 | val2 = sym_get_range_val(prop->expr->left.sym, base); |
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| 181 | if (val >= val2) { |
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| 182 | val2 = sym_get_range_val(prop->expr->right.sym, base); |
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| 183 | if (val <= val2) |
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| 184 | return; |
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| 185 | } |
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| 186 | if (sym->type == S_INT) |
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| 187 | sprintf(str, "%d", val2); |
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| 188 | else |
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| 189 | sprintf(str, "0x%x", val2); |
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| 190 | sym->curr.val = strdup(str); |
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| 191 | } |
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| 192 | |
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| 193 | static void sym_calc_visibility(struct symbol *sym) |
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| 194 | { |
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| 195 | struct property *prop; |
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| 196 | tristate tri; |
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| 197 | |
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| 198 | /* any prompt visible? */ |
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| 199 | tri = no; |
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| 200 | for_all_prompts(sym, prop) { |
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| 201 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
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| 202 | tri = E_OR(tri, prop->visible.tri); |
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| 203 | } |
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| 204 | if (tri == mod && (sym->type != S_TRISTATE || modules_val == no)) |
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| 205 | tri = yes; |
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| 206 | if (sym->visible != tri) { |
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| 207 | sym->visible = tri; |
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| 208 | sym_set_changed(sym); |
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| 209 | } |
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| 210 | if (sym_is_choice_value(sym)) |
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| 211 | return; |
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| 212 | tri = no; |
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| 213 | if (sym->rev_dep.expr) |
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| 214 | tri = expr_calc_value(sym->rev_dep.expr); |
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| 215 | if (tri == mod && sym_get_type(sym) == S_BOOLEAN) |
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| 216 | tri = yes; |
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| 217 | if (sym->rev_dep.tri != tri) { |
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| 218 | sym->rev_dep.tri = tri; |
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| 219 | sym_set_changed(sym); |
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| 220 | } |
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| 221 | } |
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| 222 | |
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| 223 | static struct symbol *sym_calc_choice(struct symbol *sym) |
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| 224 | { |
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| 225 | struct symbol *def_sym; |
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| 226 | struct property *prop; |
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| 227 | struct expr *e; |
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| 228 | |
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| 229 | /* is the user choice visible? */ |
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| 230 | def_sym = sym->user.val; |
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| 231 | if (def_sym) { |
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| 232 | sym_calc_visibility(def_sym); |
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| 233 | if (def_sym->visible != no) |
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| 234 | return def_sym; |
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| 235 | } |
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| 236 | |
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| 237 | /* any of the defaults visible? */ |
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| 238 | for_all_defaults(sym, prop) { |
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| 239 | prop->visible.tri = expr_calc_value(prop->visible.expr); |
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| 240 | if (prop->visible.tri == no) |
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| 241 | continue; |
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| 242 | def_sym = prop_get_symbol(prop); |
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| 243 | sym_calc_visibility(def_sym); |
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| 244 | if (def_sym->visible != no) |
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| 245 | return def_sym; |
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| 246 | } |
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| 247 | |
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| 248 | /* just get the first visible value */ |
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| 249 | prop = sym_get_choice_prop(sym); |
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| 250 | for (e = prop->expr; e; e = e->left.expr) { |
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| 251 | def_sym = e->right.sym; |
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| 252 | sym_calc_visibility(def_sym); |
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| 253 | if (def_sym->visible != no) |
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| 254 | return def_sym; |
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| 255 | } |
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| 256 | |
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| 257 | /* no choice? reset tristate value */ |
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| 258 | sym->curr.tri = no; |
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| 259 | return NULL; |
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| 260 | } |
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| 261 | |
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| 262 | void sym_calc_value(struct symbol *sym) |
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| 263 | { |
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| 264 | struct symbol_value newval, oldval; |
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| 265 | struct property *prop; |
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| 266 | struct expr *e; |
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| 267 | |
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| 268 | if (!sym) |
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| 269 | return; |
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| 270 | |
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| 271 | if (sym->flags & SYMBOL_VALID) |
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| 272 | return; |
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| 273 | sym->flags |= SYMBOL_VALID; |
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| 274 | |
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| 275 | oldval = sym->curr; |
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| 276 | |
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| 277 | switch (sym->type) { |
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| 278 | case S_INT: |
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| 279 | case S_HEX: |
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| 280 | case S_STRING: |
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| 281 | newval = symbol_empty.curr; |
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| 282 | break; |
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| 283 | case S_BOOLEAN: |
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| 284 | case S_TRISTATE: |
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| 285 | newval = symbol_no.curr; |
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| 286 | break; |
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| 287 | default: |
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| 288 | sym->curr.val = sym->name; |
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| 289 | sym->curr.tri = no; |
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| 290 | return; |
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| 291 | } |
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| 292 | if (!sym_is_choice_value(sym)) |
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| 293 | sym->flags &= ~SYMBOL_WRITE; |
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| 294 | |
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| 295 | sym_calc_visibility(sym); |
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| 296 | |
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| 297 | /* set default if recursively called */ |
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| 298 | sym->curr = newval; |
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| 299 | |
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| 300 | switch (sym_get_type(sym)) { |
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| 301 | case S_BOOLEAN: |
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| 302 | case S_TRISTATE: |
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| 303 | if (sym_is_choice_value(sym) && sym->visible == yes) { |
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| 304 | prop = sym_get_choice_prop(sym); |
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| 305 | newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no; |
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| 306 | } else if (E_OR(sym->visible, sym->rev_dep.tri) != no) { |
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| 307 | sym->flags |= SYMBOL_WRITE; |
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| 308 | if (sym_has_value(sym)) |
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| 309 | newval.tri = sym->user.tri; |
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| 310 | else if (!sym_is_choice(sym)) { |
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| 311 | prop = sym_get_default_prop(sym); |
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| 312 | if (prop) |
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| 313 | newval.tri = expr_calc_value(prop->expr); |
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| 314 | } |
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| 315 | newval.tri = E_OR(E_AND(newval.tri, sym->visible), sym->rev_dep.tri); |
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| 316 | } else if (!sym_is_choice(sym)) { |
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| 317 | prop = sym_get_default_prop(sym); |
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| 318 | if (prop) { |
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| 319 | sym->flags |= SYMBOL_WRITE; |
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| 320 | newval.tri = expr_calc_value(prop->expr); |
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| 321 | } |
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| 322 | } |
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| 323 | if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN) |
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| 324 | newval.tri = yes; |
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| 325 | break; |
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| 326 | case S_STRING: |
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| 327 | case S_HEX: |
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| 328 | case S_INT: |
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| 329 | if (sym->visible != no) { |
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| 330 | sym->flags |= SYMBOL_WRITE; |
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| 331 | if (sym_has_value(sym)) { |
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| 332 | newval.val = sym->user.val; |
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| 333 | break; |
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| 334 | } |
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| 335 | } |
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| 336 | prop = sym_get_default_prop(sym); |
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| 337 | if (prop) { |
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| 338 | struct symbol *ds = prop_get_symbol(prop); |
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| 339 | if (ds) { |
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| 340 | sym->flags |= SYMBOL_WRITE; |
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| 341 | sym_calc_value(ds); |
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| 342 | newval.val = ds->curr.val; |
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| 343 | } |
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| 344 | } |
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| 345 | break; |
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| 346 | default: |
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| 347 | ; |
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| 348 | } |
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| 349 | |
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| 350 | sym->curr = newval; |
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| 351 | if (sym_is_choice(sym) && newval.tri == yes) |
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| 352 | sym->curr.val = sym_calc_choice(sym); |
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| 353 | sym_validate_range(sym); |
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| 354 | |
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| 355 | if (memcmp(&oldval, &sym->curr, sizeof(oldval))) |
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| 356 | sym_set_changed(sym); |
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| 357 | if (modules_sym == sym) |
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| 358 | modules_val = modules_sym->curr.tri; |
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| 359 | |
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| 360 | if (sym_is_choice(sym)) { |
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| 361 | int flags = sym->flags & (SYMBOL_CHANGED | SYMBOL_WRITE); |
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| 362 | prop = sym_get_choice_prop(sym); |
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| 363 | for (e = prop->expr; e; e = e->left.expr) { |
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| 364 | e->right.sym->flags |= flags; |
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| 365 | if (flags & SYMBOL_CHANGED) |
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| 366 | sym_set_changed(e->right.sym); |
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| 367 | } |
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| 368 | } |
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| 369 | } |
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| 370 | |
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| 371 | void sym_clear_all_valid(void) |
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| 372 | { |
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| 373 | struct symbol *sym; |
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| 374 | int i; |
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| 375 | |
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| 376 | for_all_symbols(i, sym) |
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| 377 | sym->flags &= ~SYMBOL_VALID; |
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| 378 | sym_change_count++; |
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| 379 | if (modules_sym) |
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| 380 | sym_calc_value(modules_sym); |
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| 381 | } |
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| 382 | |
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| 383 | void sym_set_changed(struct symbol *sym) |
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| 384 | { |
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| 385 | struct property *prop; |
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| 386 | |
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| 387 | sym->flags |= SYMBOL_CHANGED; |
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| 388 | for (prop = sym->prop; prop; prop = prop->next) { |
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| 389 | if (prop->menu) |
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| 390 | prop->menu->flags |= MENU_CHANGED; |
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| 391 | } |
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| 392 | } |
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| 393 | |
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| 394 | void sym_set_all_changed(void) |
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| 395 | { |
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| 396 | struct symbol *sym; |
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| 397 | int i; |
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| 398 | |
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| 399 | for_all_symbols(i, sym) |
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| 400 | sym_set_changed(sym); |
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| 401 | } |
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| 402 | |
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| 403 | bool sym_tristate_within_range(struct symbol *sym, tristate val) |
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| 404 | { |
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| 405 | int type = sym_get_type(sym); |
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| 406 | |
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| 407 | if (sym->visible == no) |
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| 408 | return false; |
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| 409 | |
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| 410 | if (type != S_BOOLEAN && type != S_TRISTATE) |
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| 411 | return false; |
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| 412 | |
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| 413 | if (type == S_BOOLEAN && val == mod) |
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| 414 | return false; |
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| 415 | if (sym->visible <= sym->rev_dep.tri) |
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| 416 | return false; |
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| 417 | if (sym_is_choice_value(sym) && sym->visible == yes) |
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| 418 | return val == yes; |
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| 419 | return val >= sym->rev_dep.tri && val <= sym->visible; |
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| 420 | } |
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| 421 | |
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| 422 | bool sym_set_tristate_value(struct symbol *sym, tristate val) |
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| 423 | { |
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| 424 | tristate oldval = sym_get_tristate_value(sym); |
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| 425 | |
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| 426 | if (oldval != val && !sym_tristate_within_range(sym, val)) |
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| 427 | return false; |
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| 428 | |
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| 429 | if (sym->flags & SYMBOL_NEW) { |
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| 430 | sym->flags &= ~SYMBOL_NEW; |
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| 431 | sym_set_changed(sym); |
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| 432 | } |
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| 433 | /* |
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| 434 | * setting a choice value also resets the new flag of the choice |
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| 435 | * symbol and all other choice values. |
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| 436 | */ |
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| 437 | if (sym_is_choice_value(sym) && val == yes) { |
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| 438 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); |
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| 439 | struct property *prop; |
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| 440 | struct expr *e; |
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| 441 | |
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| 442 | cs->user.val = sym; |
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| 443 | cs->flags &= ~SYMBOL_NEW; |
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| 444 | prop = sym_get_choice_prop(cs); |
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| 445 | for (e = prop->expr; e; e = e->left.expr) { |
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| 446 | if (e->right.sym->visible != no) |
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| 447 | e->right.sym->flags &= ~SYMBOL_NEW; |
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| 448 | } |
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| 449 | } |
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| 450 | |
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| 451 | sym->user.tri = val; |
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| 452 | if (oldval != val) { |
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| 453 | sym_clear_all_valid(); |
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| 454 | if (sym == modules_sym) |
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| 455 | sym_set_all_changed(); |
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| 456 | } |
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| 457 | |
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| 458 | return true; |
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| 459 | } |
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| 460 | |
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| 461 | tristate sym_toggle_tristate_value(struct symbol *sym) |
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| 462 | { |
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| 463 | tristate oldval, newval; |
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| 464 | |
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| 465 | oldval = newval = sym_get_tristate_value(sym); |
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| 466 | do { |
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| 467 | switch (newval) { |
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| 468 | case no: |
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| 469 | newval = mod; |
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| 470 | break; |
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| 471 | case mod: |
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| 472 | newval = yes; |
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| 473 | break; |
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| 474 | case yes: |
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| 475 | newval = no; |
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| 476 | break; |
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| 477 | } |
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| 478 | if (sym_set_tristate_value(sym, newval)) |
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| 479 | break; |
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| 480 | } while (oldval != newval); |
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| 481 | return newval; |
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| 482 | } |
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| 483 | |
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| 484 | bool sym_string_valid(struct symbol *sym, const char *str) |
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| 485 | { |
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| 486 | signed char ch; |
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| 487 | |
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| 488 | switch (sym->type) { |
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| 489 | case S_STRING: |
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| 490 | return true; |
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| 491 | case S_INT: |
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| 492 | ch = *str++; |
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| 493 | if (ch == '-') |
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| 494 | ch = *str++; |
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| 495 | if (!isdigit(ch)) |
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| 496 | return false; |
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| 497 | if (ch == '0' && *str != 0) |
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| 498 | return false; |
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| 499 | while ((ch = *str++)) { |
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| 500 | if (!isdigit(ch)) |
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| 501 | return false; |
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| 502 | } |
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| 503 | return true; |
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| 504 | case S_HEX: |
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| 505 | if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')) |
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| 506 | str += 2; |
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| 507 | ch = *str++; |
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| 508 | do { |
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| 509 | if (!isxdigit(ch)) |
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| 510 | return false; |
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| 511 | } while ((ch = *str++)); |
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| 512 | return true; |
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| 513 | case S_BOOLEAN: |
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| 514 | case S_TRISTATE: |
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| 515 | switch (str[0]) { |
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| 516 | case 'y': case 'Y': |
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| 517 | case 'm': case 'M': |
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| 518 | case 'n': case 'N': |
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| 519 | return true; |
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| 520 | } |
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| 521 | return false; |
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| 522 | default: |
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| 523 | return false; |
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| 524 | } |
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| 525 | } |
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| 526 | |
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| 527 | bool sym_string_within_range(struct symbol *sym, const char *str) |
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| 528 | { |
---|
| 529 | struct property *prop; |
---|
| 530 | int val; |
---|
| 531 | |
---|
| 532 | switch (sym->type) { |
---|
| 533 | case S_STRING: |
---|
| 534 | return sym_string_valid(sym, str); |
---|
| 535 | case S_INT: |
---|
| 536 | if (!sym_string_valid(sym, str)) |
---|
| 537 | return false; |
---|
| 538 | prop = sym_get_range_prop(sym); |
---|
| 539 | if (!prop) |
---|
| 540 | return true; |
---|
| 541 | val = strtol(str, NULL, 10); |
---|
| 542 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
---|
| 543 | val <= sym_get_range_val(prop->expr->right.sym, 10); |
---|
| 544 | case S_HEX: |
---|
| 545 | if (!sym_string_valid(sym, str)) |
---|
| 546 | return false; |
---|
| 547 | prop = sym_get_range_prop(sym); |
---|
| 548 | if (!prop) |
---|
| 549 | return true; |
---|
| 550 | val = strtol(str, NULL, 16); |
---|
| 551 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
---|
| 552 | val <= sym_get_range_val(prop->expr->right.sym, 16); |
---|
| 553 | case S_BOOLEAN: |
---|
| 554 | case S_TRISTATE: |
---|
| 555 | switch (str[0]) { |
---|
| 556 | case 'y': case 'Y': |
---|
| 557 | return sym_tristate_within_range(sym, yes); |
---|
| 558 | case 'm': case 'M': |
---|
| 559 | return sym_tristate_within_range(sym, mod); |
---|
| 560 | case 'n': case 'N': |
---|
| 561 | return sym_tristate_within_range(sym, no); |
---|
| 562 | } |
---|
| 563 | return false; |
---|
| 564 | default: |
---|
| 565 | return false; |
---|
| 566 | } |
---|
| 567 | } |
---|
| 568 | |
---|
| 569 | bool sym_set_string_value(struct symbol *sym, const char *newval) |
---|
| 570 | { |
---|
| 571 | const char *oldval; |
---|
| 572 | char *val; |
---|
| 573 | int size; |
---|
| 574 | |
---|
| 575 | switch (sym->type) { |
---|
| 576 | case S_BOOLEAN: |
---|
| 577 | case S_TRISTATE: |
---|
| 578 | switch (newval[0]) { |
---|
| 579 | case 'y': case 'Y': |
---|
| 580 | return sym_set_tristate_value(sym, yes); |
---|
| 581 | case 'm': case 'M': |
---|
| 582 | return sym_set_tristate_value(sym, mod); |
---|
| 583 | case 'n': case 'N': |
---|
| 584 | return sym_set_tristate_value(sym, no); |
---|
| 585 | } |
---|
| 586 | return false; |
---|
| 587 | default: |
---|
| 588 | ; |
---|
| 589 | } |
---|
| 590 | |
---|
| 591 | if (!sym_string_within_range(sym, newval)) |
---|
| 592 | return false; |
---|
| 593 | |
---|
| 594 | if (sym->flags & SYMBOL_NEW) { |
---|
| 595 | sym->flags &= ~SYMBOL_NEW; |
---|
| 596 | sym_set_changed(sym); |
---|
| 597 | } |
---|
| 598 | |
---|
| 599 | oldval = sym->user.val; |
---|
| 600 | size = strlen(newval) + 1; |
---|
| 601 | if (sym->type == S_HEX && (newval[0] != '0' || (newval[1] != 'x' && newval[1] != 'X'))) { |
---|
| 602 | size += 2; |
---|
| 603 | sym->user.val = val = malloc(size); |
---|
| 604 | *val++ = '0'; |
---|
| 605 | *val++ = 'x'; |
---|
| 606 | } else if (!oldval || strcmp(oldval, newval)) |
---|
| 607 | sym->user.val = val = malloc(size); |
---|
| 608 | else |
---|
| 609 | return true; |
---|
| 610 | |
---|
| 611 | strcpy(val, newval); |
---|
| 612 | free((void *)oldval); |
---|
| 613 | sym_clear_all_valid(); |
---|
| 614 | |
---|
| 615 | return true; |
---|
| 616 | } |
---|
| 617 | |
---|
| 618 | const char *sym_get_string_value(struct symbol *sym) |
---|
| 619 | { |
---|
| 620 | tristate val; |
---|
| 621 | |
---|
| 622 | switch (sym->type) { |
---|
| 623 | case S_BOOLEAN: |
---|
| 624 | case S_TRISTATE: |
---|
| 625 | val = sym_get_tristate_value(sym); |
---|
| 626 | switch (val) { |
---|
| 627 | case no: |
---|
| 628 | return "n"; |
---|
| 629 | case mod: |
---|
| 630 | return "m"; |
---|
| 631 | case yes: |
---|
| 632 | return "y"; |
---|
| 633 | } |
---|
| 634 | break; |
---|
| 635 | default: |
---|
| 636 | ; |
---|
| 637 | } |
---|
| 638 | return (const char *)sym->curr.val; |
---|
| 639 | } |
---|
| 640 | |
---|
| 641 | bool sym_is_changable(struct symbol *sym) |
---|
| 642 | { |
---|
| 643 | return sym->visible > sym->rev_dep.tri; |
---|
| 644 | } |
---|
| 645 | |
---|
| 646 | struct symbol *sym_lookup(const char *name, int isconst) |
---|
| 647 | { |
---|
| 648 | struct symbol *symbol; |
---|
| 649 | const char *ptr; |
---|
| 650 | char *new_name; |
---|
| 651 | int hash = 0; |
---|
| 652 | |
---|
| 653 | if (name) { |
---|
| 654 | if (name[0] && !name[1]) { |
---|
| 655 | switch (name[0]) { |
---|
| 656 | case 'y': return &symbol_yes; |
---|
| 657 | case 'm': return &symbol_mod; |
---|
| 658 | case 'n': return &symbol_no; |
---|
| 659 | } |
---|
| 660 | } |
---|
| 661 | for (ptr = name; *ptr; ptr++) |
---|
| 662 | hash += *ptr; |
---|
| 663 | hash &= 0xff; |
---|
| 664 | |
---|
| 665 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
---|
| 666 | if (!strcmp(symbol->name, name)) { |
---|
| 667 | if ((isconst && symbol->flags & SYMBOL_CONST) || |
---|
| 668 | (!isconst && !(symbol->flags & SYMBOL_CONST))) |
---|
| 669 | return symbol; |
---|
| 670 | } |
---|
| 671 | } |
---|
| 672 | new_name = strdup(name); |
---|
| 673 | } else { |
---|
| 674 | new_name = NULL; |
---|
| 675 | hash = 256; |
---|
| 676 | } |
---|
| 677 | |
---|
| 678 | symbol = malloc(sizeof(*symbol)); |
---|
| 679 | memset(symbol, 0, sizeof(*symbol)); |
---|
| 680 | symbol->name = new_name; |
---|
| 681 | symbol->type = S_UNKNOWN; |
---|
| 682 | symbol->flags = SYMBOL_NEW; |
---|
| 683 | if (isconst) |
---|
| 684 | symbol->flags |= SYMBOL_CONST; |
---|
| 685 | |
---|
| 686 | symbol->next = symbol_hash[hash]; |
---|
| 687 | symbol_hash[hash] = symbol; |
---|
| 688 | |
---|
| 689 | return symbol; |
---|
| 690 | } |
---|
| 691 | |
---|
| 692 | struct symbol *sym_find(const char *name) |
---|
| 693 | { |
---|
| 694 | struct symbol *symbol = NULL; |
---|
| 695 | const char *ptr; |
---|
| 696 | int hash = 0; |
---|
| 697 | |
---|
| 698 | if (!name) |
---|
| 699 | return NULL; |
---|
| 700 | |
---|
| 701 | if (name[0] && !name[1]) { |
---|
| 702 | switch (name[0]) { |
---|
| 703 | case 'y': return &symbol_yes; |
---|
| 704 | case 'm': return &symbol_mod; |
---|
| 705 | case 'n': return &symbol_no; |
---|
| 706 | } |
---|
| 707 | } |
---|
| 708 | for (ptr = name; *ptr; ptr++) |
---|
| 709 | hash += *ptr; |
---|
| 710 | hash &= 0xff; |
---|
| 711 | |
---|
| 712 | for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) { |
---|
| 713 | if (!strcmp(symbol->name, name) && |
---|
| 714 | !(symbol->flags & SYMBOL_CONST)) |
---|
| 715 | break; |
---|
| 716 | } |
---|
| 717 | |
---|
| 718 | return symbol; |
---|
| 719 | } |
---|
| 720 | |
---|
| 721 | struct symbol **sym_re_search(const char *pattern) |
---|
| 722 | { |
---|
| 723 | struct symbol *sym, **sym_arr = NULL; |
---|
| 724 | int i, cnt, size; |
---|
| 725 | regex_t re; |
---|
| 726 | |
---|
| 727 | cnt = size = 0; |
---|
| 728 | /* Skip if empty */ |
---|
| 729 | if (strlen(pattern) == 0) |
---|
| 730 | return NULL; |
---|
| 731 | if (regcomp(&re, pattern, REG_EXTENDED|REG_NOSUB|REG_ICASE)) |
---|
| 732 | return NULL; |
---|
| 733 | |
---|
| 734 | for_all_symbols(i, sym) { |
---|
| 735 | if (sym->flags & SYMBOL_CONST || !sym->name) |
---|
| 736 | continue; |
---|
| 737 | if (regexec(&re, sym->name, 0, NULL, 0)) |
---|
| 738 | continue; |
---|
| 739 | if (cnt + 1 >= size) { |
---|
| 740 | void *tmp = sym_arr; |
---|
| 741 | size += 16; |
---|
| 742 | sym_arr = realloc(sym_arr, size * sizeof(struct symbol *)); |
---|
| 743 | if (!sym_arr) { |
---|
| 744 | free(tmp); |
---|
| 745 | return NULL; |
---|
| 746 | } |
---|
| 747 | } |
---|
| 748 | sym_arr[cnt++] = sym; |
---|
| 749 | } |
---|
| 750 | if (sym_arr) |
---|
| 751 | sym_arr[cnt] = NULL; |
---|
| 752 | regfree(&re); |
---|
| 753 | |
---|
| 754 | return sym_arr; |
---|
| 755 | } |
---|
| 756 | |
---|
| 757 | |
---|
| 758 | struct symbol *sym_check_deps(struct symbol *sym); |
---|
| 759 | |
---|
| 760 | static struct symbol *sym_check_expr_deps(struct expr *e) |
---|
| 761 | { |
---|
| 762 | struct symbol *sym; |
---|
| 763 | |
---|
| 764 | if (!e) |
---|
| 765 | return NULL; |
---|
| 766 | switch (e->type) { |
---|
| 767 | case E_OR: |
---|
| 768 | case E_AND: |
---|
| 769 | sym = sym_check_expr_deps(e->left.expr); |
---|
| 770 | if (sym) |
---|
| 771 | return sym; |
---|
| 772 | return sym_check_expr_deps(e->right.expr); |
---|
| 773 | case E_NOT: |
---|
| 774 | return sym_check_expr_deps(e->left.expr); |
---|
| 775 | case E_EQUAL: |
---|
| 776 | case E_UNEQUAL: |
---|
| 777 | sym = sym_check_deps(e->left.sym); |
---|
| 778 | if (sym) |
---|
| 779 | return sym; |
---|
| 780 | return sym_check_deps(e->right.sym); |
---|
| 781 | case E_SYMBOL: |
---|
| 782 | return sym_check_deps(e->left.sym); |
---|
| 783 | default: |
---|
| 784 | break; |
---|
| 785 | } |
---|
| 786 | printf("Oops! How to check %d?\n", e->type); |
---|
| 787 | return NULL; |
---|
| 788 | } |
---|
| 789 | |
---|
| 790 | struct symbol *sym_check_deps(struct symbol *sym) |
---|
| 791 | { |
---|
| 792 | struct symbol *sym2; |
---|
| 793 | struct property *prop; |
---|
| 794 | |
---|
| 795 | if (sym->flags & SYMBOL_CHECK) { |
---|
| 796 | printf("Warning! Found recursive dependency: %s", sym->name); |
---|
| 797 | return sym; |
---|
| 798 | } |
---|
| 799 | if (sym->flags & SYMBOL_CHECKED) |
---|
| 800 | return NULL; |
---|
| 801 | |
---|
| 802 | sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED); |
---|
| 803 | sym2 = sym_check_expr_deps(sym->rev_dep.expr); |
---|
| 804 | if (sym2) |
---|
| 805 | goto out; |
---|
| 806 | |
---|
| 807 | for (prop = sym->prop; prop; prop = prop->next) { |
---|
| 808 | if (prop->type == P_CHOICE || prop->type == P_SELECT) |
---|
| 809 | continue; |
---|
| 810 | sym2 = sym_check_expr_deps(prop->visible.expr); |
---|
| 811 | if (sym2) |
---|
| 812 | goto out; |
---|
| 813 | if (prop->type != P_DEFAULT || sym_is_choice(sym)) |
---|
| 814 | continue; |
---|
| 815 | sym2 = sym_check_expr_deps(prop->expr); |
---|
| 816 | if (sym2) |
---|
| 817 | goto out; |
---|
| 818 | } |
---|
| 819 | out: |
---|
| 820 | if (sym2) { |
---|
| 821 | printf(" %s", sym->name); |
---|
| 822 | if (sym2 == sym) { |
---|
| 823 | printf("\n"); |
---|
| 824 | sym2 = NULL; |
---|
| 825 | } |
---|
| 826 | } |
---|
| 827 | sym->flags &= ~SYMBOL_CHECK; |
---|
| 828 | return sym2; |
---|
| 829 | } |
---|
| 830 | |
---|
| 831 | struct property *prop_alloc(enum prop_type type, struct symbol *sym) |
---|
| 832 | { |
---|
| 833 | struct property *prop; |
---|
| 834 | struct property **propp; |
---|
| 835 | |
---|
| 836 | prop = malloc(sizeof(*prop)); |
---|
| 837 | memset(prop, 0, sizeof(*prop)); |
---|
| 838 | prop->type = type; |
---|
| 839 | prop->sym = sym; |
---|
| 840 | prop->file = current_file; |
---|
| 841 | prop->lineno = zconf_lineno(); |
---|
| 842 | |
---|
| 843 | /* append property to the prop list of symbol */ |
---|
| 844 | if (sym) { |
---|
| 845 | for (propp = &sym->prop; *propp; propp = &(*propp)->next) |
---|
| 846 | ; |
---|
| 847 | *propp = prop; |
---|
| 848 | } |
---|
| 849 | |
---|
| 850 | return prop; |
---|
| 851 | } |
---|
| 852 | |
---|
| 853 | struct symbol *prop_get_symbol(struct property *prop) |
---|
| 854 | { |
---|
| 855 | if (prop->expr && (prop->expr->type == E_SYMBOL || |
---|
| 856 | prop->expr->type == E_CHOICE)) |
---|
| 857 | return prop->expr->left.sym; |
---|
| 858 | return NULL; |
---|
| 859 | } |
---|
| 860 | |
---|
| 861 | const char *prop_get_type_name(enum prop_type type) |
---|
| 862 | { |
---|
| 863 | switch (type) { |
---|
| 864 | case P_PROMPT: |
---|
| 865 | return "prompt"; |
---|
| 866 | case P_COMMENT: |
---|
| 867 | return "comment"; |
---|
| 868 | case P_MENU: |
---|
| 869 | return "menu"; |
---|
| 870 | case P_DEFAULT: |
---|
| 871 | return "default"; |
---|
| 872 | case P_CHOICE: |
---|
| 873 | return "choice"; |
---|
| 874 | case P_SELECT: |
---|
| 875 | return "select"; |
---|
| 876 | case P_RANGE: |
---|
| 877 | return "range"; |
---|
| 878 | case P_UNKNOWN: |
---|
| 879 | break; |
---|
| 880 | } |
---|
| 881 | return "unknown"; |
---|
| 882 | } |
---|