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 | { |
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529 | struct property *prop; |
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530 | int val; |
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531 | |
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532 | switch (sym->type) { |
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533 | case S_STRING: |
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534 | return sym_string_valid(sym, str); |
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535 | case S_INT: |
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536 | if (!sym_string_valid(sym, str)) |
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537 | return false; |
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538 | prop = sym_get_range_prop(sym); |
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539 | if (!prop) |
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540 | return true; |
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541 | val = strtol(str, NULL, 10); |
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542 | return val >= sym_get_range_val(prop->expr->left.sym, 10) && |
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543 | val <= sym_get_range_val(prop->expr->right.sym, 10); |
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544 | case S_HEX: |
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545 | if (!sym_string_valid(sym, str)) |
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546 | return false; |
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547 | prop = sym_get_range_prop(sym); |
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548 | if (!prop) |
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549 | return true; |
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550 | val = strtol(str, NULL, 16); |
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551 | return val >= sym_get_range_val(prop->expr->left.sym, 16) && |
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552 | val <= sym_get_range_val(prop->expr->right.sym, 16); |
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553 | case S_BOOLEAN: |
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554 | case S_TRISTATE: |
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555 | switch (str[0]) { |
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556 | case 'y': case 'Y': |
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557 | return sym_tristate_within_range(sym, yes); |
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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 | } |
---|