Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 1 | %option nostdinit noyywrap never-interactive full ecs |
| 2 | %option 8bit nodefault perf-report perf-report |
| 3 | %option noinput |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 4 | %x COMMAND HELP STRING PARAM |
| 5 | %{ |
| 6 | /* |
| 7 | * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> |
| 8 | * Released under the terms of the GNU GPL v2.0. |
| 9 | */ |
| 10 | |
Patrick Georgi | d36b80c | 2015-04-29 13:53:14 +0200 | [diff] [blame] | 11 | #include <glob.h> |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 12 | #include <limits.h> |
| 13 | #include <stdio.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <string.h> |
| 16 | #include <unistd.h> |
| 17 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 18 | #include "lkc.h" |
| 19 | |
| 20 | #define START_STRSIZE 16 |
| 21 | |
| 22 | static struct { |
| 23 | struct file *file; |
| 24 | int lineno; |
| 25 | } current_pos; |
| 26 | |
| 27 | static char *text; |
| 28 | static int text_size, text_asize; |
| 29 | |
| 30 | struct buffer { |
Stefan Reinauer | 3ec23b3 | 2015-04-06 00:59:23 +0200 | [diff] [blame] | 31 | struct buffer *parent; |
| 32 | YY_BUFFER_STATE state; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 33 | }; |
| 34 | |
| 35 | struct buffer *current_buf; |
| 36 | |
| 37 | static int last_ts, first_ts; |
| 38 | |
| 39 | static void zconf_endhelp(void); |
| 40 | static void zconf_endfile(void); |
| 41 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 42 | static void new_string(void) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 43 | { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 44 | text = xmalloc(START_STRSIZE); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 45 | text_asize = START_STRSIZE; |
| 46 | text_size = 0; |
| 47 | *text = 0; |
| 48 | } |
| 49 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 50 | static void append_string(const char *str, int size) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 51 | { |
| 52 | int new_size = text_size + size + 1; |
| 53 | if (new_size > text_asize) { |
| 54 | new_size += START_STRSIZE - 1; |
| 55 | new_size &= -START_STRSIZE; |
| 56 | text = realloc(text, new_size); |
| 57 | text_asize = new_size; |
| 58 | } |
| 59 | memcpy(text + text_size, str, size); |
| 60 | text_size += size; |
| 61 | text[text_size] = 0; |
| 62 | } |
| 63 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 64 | static void alloc_string(const char *str, int size) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 65 | { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 66 | text = xmalloc(size + 1); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 67 | memcpy(text, str, size); |
| 68 | text[size] = 0; |
| 69 | } |
| 70 | %} |
| 71 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 72 | n [A-Za-z0-9_] |
| 73 | |
| 74 | %% |
| 75 | int str = 0; |
| 76 | int ts, i; |
| 77 | |
| 78 | [ \t]*#.*\n | |
| 79 | [ \t]*\n { |
| 80 | current_file->lineno++; |
| 81 | return T_EOL; |
| 82 | } |
| 83 | [ \t]*#.* |
| 84 | |
| 85 | |
| 86 | [ \t]+ { |
| 87 | BEGIN(COMMAND); |
| 88 | } |
| 89 | |
| 90 | . { |
| 91 | unput(yytext[0]); |
| 92 | BEGIN(COMMAND); |
| 93 | } |
| 94 | |
| 95 | |
| 96 | <COMMAND>{ |
| 97 | {n}+ { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 98 | const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 99 | BEGIN(PARAM); |
| 100 | current_pos.file = current_file; |
| 101 | current_pos.lineno = current_file->lineno; |
| 102 | if (id && id->flags & TF_COMMAND) { |
| 103 | zconflval.id = id; |
| 104 | return id->token; |
| 105 | } |
| 106 | alloc_string(yytext, yyleng); |
| 107 | zconflval.string = text; |
| 108 | return T_WORD; |
| 109 | } |
| 110 | . |
| 111 | \n { |
| 112 | BEGIN(INITIAL); |
| 113 | current_file->lineno++; |
| 114 | return T_EOL; |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | <PARAM>{ |
| 119 | "&&" return T_AND; |
| 120 | "||" return T_OR; |
| 121 | "(" return T_OPEN_PAREN; |
| 122 | ")" return T_CLOSE_PAREN; |
| 123 | "!" return T_NOT; |
| 124 | "=" return T_EQUAL; |
| 125 | "!=" return T_UNEQUAL; |
| 126 | \"|\' { |
| 127 | str = yytext[0]; |
| 128 | new_string(); |
| 129 | BEGIN(STRING); |
| 130 | } |
| 131 | \n BEGIN(INITIAL); current_file->lineno++; return T_EOL; |
| 132 | --- /* ignore */ |
| 133 | ({n}|[-/.])+ { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 134 | const struct kconf_id *id = kconf_id_lookup(yytext, yyleng); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 135 | if (id && id->flags & TF_PARAM) { |
| 136 | zconflval.id = id; |
| 137 | return id->token; |
| 138 | } |
| 139 | alloc_string(yytext, yyleng); |
| 140 | zconflval.string = text; |
| 141 | return T_WORD; |
| 142 | } |
| 143 | #.* /* comment */ |
| 144 | \\\n current_file->lineno++; |
| 145 | . |
| 146 | <<EOF>> { |
| 147 | BEGIN(INITIAL); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | <STRING>{ |
| 152 | [^'"\\\n]+/\n { |
| 153 | append_string(yytext, yyleng); |
| 154 | zconflval.string = text; |
| 155 | return T_WORD_QUOTE; |
| 156 | } |
| 157 | [^'"\\\n]+ { |
| 158 | append_string(yytext, yyleng); |
| 159 | } |
| 160 | \\.?/\n { |
| 161 | append_string(yytext + 1, yyleng - 1); |
| 162 | zconflval.string = text; |
| 163 | return T_WORD_QUOTE; |
| 164 | } |
| 165 | \\.? { |
| 166 | append_string(yytext + 1, yyleng - 1); |
| 167 | } |
| 168 | \'|\" { |
| 169 | if (str == yytext[0]) { |
| 170 | BEGIN(PARAM); |
| 171 | zconflval.string = text; |
| 172 | return T_WORD_QUOTE; |
| 173 | } else |
| 174 | append_string(yytext, 1); |
| 175 | } |
| 176 | \n { |
| 177 | printf("%s:%d:warning: multi-line strings not supported\n", zconf_curname(), zconf_lineno()); |
| 178 | current_file->lineno++; |
| 179 | BEGIN(INITIAL); |
| 180 | return T_EOL; |
| 181 | } |
| 182 | <<EOF>> { |
| 183 | BEGIN(INITIAL); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | <HELP>{ |
| 188 | [ \t]+ { |
| 189 | ts = 0; |
| 190 | for (i = 0; i < yyleng; i++) { |
| 191 | if (yytext[i] == '\t') |
| 192 | ts = (ts & ~7) + 8; |
| 193 | else |
| 194 | ts++; |
| 195 | } |
| 196 | last_ts = ts; |
| 197 | if (first_ts) { |
| 198 | if (ts < first_ts) { |
| 199 | zconf_endhelp(); |
| 200 | return T_HELPTEXT; |
| 201 | } |
| 202 | ts -= first_ts; |
| 203 | while (ts > 8) { |
| 204 | append_string(" ", 8); |
| 205 | ts -= 8; |
| 206 | } |
| 207 | append_string(" ", ts); |
| 208 | } |
| 209 | } |
| 210 | [ \t]*\n/[^ \t\n] { |
| 211 | current_file->lineno++; |
| 212 | zconf_endhelp(); |
| 213 | return T_HELPTEXT; |
| 214 | } |
| 215 | [ \t]*\n { |
| 216 | current_file->lineno++; |
| 217 | append_string("\n", 1); |
| 218 | } |
| 219 | [^ \t\n].* { |
| 220 | while (yyleng) { |
| 221 | if ((yytext[yyleng-1] != ' ') && (yytext[yyleng-1] != '\t')) |
| 222 | break; |
| 223 | yyleng--; |
| 224 | } |
| 225 | append_string(yytext, yyleng); |
| 226 | if (!first_ts) |
| 227 | first_ts = last_ts; |
| 228 | } |
| 229 | <<EOF>> { |
| 230 | zconf_endhelp(); |
| 231 | return T_HELPTEXT; |
| 232 | } |
| 233 | } |
| 234 | |
| 235 | <<EOF>> { |
| 236 | if (current_file) { |
| 237 | zconf_endfile(); |
| 238 | return T_EOL; |
| 239 | } |
| 240 | fclose(yyin); |
| 241 | yyterminate(); |
| 242 | } |
| 243 | |
| 244 | %% |
| 245 | void zconf_starthelp(void) |
| 246 | { |
| 247 | new_string(); |
| 248 | last_ts = first_ts = 0; |
| 249 | BEGIN(HELP); |
| 250 | } |
| 251 | |
| 252 | static void zconf_endhelp(void) |
| 253 | { |
| 254 | zconflval.string = text; |
| 255 | BEGIN(INITIAL); |
| 256 | } |
| 257 | |
| 258 | |
| 259 | /* |
| 260 | * Try to open specified file with following names: |
| 261 | * ./name |
| 262 | * $(srctree)/name |
| 263 | * The latter is used when srctree is separate from objtree |
| 264 | * when compiling the kernel. |
| 265 | * Return NULL if file is not found. |
| 266 | */ |
| 267 | FILE *zconf_fopen(const char *name) |
| 268 | { |
| 269 | char *env, fullname[PATH_MAX+1]; |
| 270 | FILE *f; |
| 271 | |
| 272 | f = fopen(name, "r"); |
| 273 | if (!f && name != NULL && name[0] != '/') { |
| 274 | env = getenv(SRCTREE); |
| 275 | if (env) { |
Jacob Garber | 554e55b | 2019-05-08 09:32:00 -0600 | [diff] [blame] | 276 | snprintf(fullname, sizeof(fullname), |
| 277 | "%s/%s", env, name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 278 | f = fopen(fullname, "r"); |
| 279 | } |
| 280 | } |
| 281 | return f; |
| 282 | } |
| 283 | |
| 284 | void zconf_initscan(const char *name) |
| 285 | { |
| 286 | yyin = zconf_fopen(name); |
| 287 | if (!yyin) { |
| 288 | printf("can't find file %s\n", name); |
| 289 | exit(1); |
| 290 | } |
| 291 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 292 | current_buf = xmalloc(sizeof(*current_buf)); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 293 | memset(current_buf, 0, sizeof(*current_buf)); |
| 294 | |
| 295 | current_file = file_lookup(name); |
| 296 | current_file->lineno = 1; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | void zconf_nextfile(const char *name) |
| 300 | { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 301 | struct file *iter; |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 302 | struct file *file = file_lookup(name); |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 303 | struct buffer *buf = xmalloc(sizeof(*buf)); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 304 | memset(buf, 0, sizeof(*buf)); |
| 305 | |
| 306 | current_buf->state = YY_CURRENT_BUFFER; |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 307 | yyin = zconf_fopen(file->name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 308 | if (!yyin) { |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 309 | printf("%s:%d: can't open file \"%s\"\n", |
| 310 | zconf_curname(), zconf_lineno(), file->name); |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 311 | exit(1); |
| 312 | } |
| 313 | yy_switch_to_buffer(yy_create_buffer(yyin, YY_BUF_SIZE)); |
| 314 | buf->parent = current_buf; |
| 315 | current_buf = buf; |
| 316 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 317 | for (iter = current_file->parent; iter; iter = iter->parent ) { |
| 318 | if (!strcmp(current_file->name,iter->name) ) { |
| 319 | printf("%s:%d: recursive inclusion detected. " |
| 320 | "Inclusion path:\n current file : '%s'\n", |
| 321 | zconf_curname(), zconf_lineno(), |
| 322 | zconf_curname()); |
| 323 | iter = current_file->parent; |
| 324 | while (iter && \ |
| 325 | strcmp(iter->name,current_file->name)) { |
| 326 | printf(" included from: '%s:%d'\n", |
| 327 | iter->name, iter->lineno-1); |
| 328 | iter = iter->parent; |
| 329 | } |
| 330 | if (iter) |
| 331 | printf(" included from: '%s:%d'\n", |
| 332 | iter->name, iter->lineno+1); |
| 333 | exit(1); |
| 334 | } |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 335 | } |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 336 | file->lineno = 1; |
| 337 | file->parent = current_file; |
| 338 | current_file = file; |
| 339 | } |
| 340 | |
Stefan Reinauer | f78a09b | 2015-04-03 20:01:38 +0200 | [diff] [blame] | 341 | void zconf_nextfiles(const char *wildcard) |
| 342 | { |
zbao | 91ba80d | 2015-09-26 06:49:47 -0400 | [diff] [blame] | 343 | glob_t g = {0}; |
Stefan Reinauer | f78a09b | 2015-04-03 20:01:38 +0200 | [diff] [blame] | 344 | char **w; |
| 345 | int i; |
| 346 | |
Patrick Georgi | d36b80c | 2015-04-29 13:53:14 +0200 | [diff] [blame] | 347 | if (glob(wildcard, 0, NULL, &g) != 0) { |
| 348 | return; |
| 349 | } |
| 350 | if (g.gl_pathv == NULL) { |
| 351 | globfree(&g); |
| 352 | return; |
| 353 | } |
Stefan Reinauer | f78a09b | 2015-04-03 20:01:38 +0200 | [diff] [blame] | 354 | |
Patrick Georgi | ccbcfd7 | 2015-05-10 18:00:05 +0200 | [diff] [blame] | 355 | /* working through files backwards, since |
| 356 | * we're first pushing them on a stack |
| 357 | * before actually handling them. |
| 358 | */ |
| 359 | for (i = g.gl_pathc; i > 0; i--) { |
| 360 | w = &g.gl_pathv[i - 1]; |
| 361 | zconf_nextfile(*w); |
| 362 | } |
Stefan Reinauer | f78a09b | 2015-04-03 20:01:38 +0200 | [diff] [blame] | 363 | |
Patrick Georgi | d36b80c | 2015-04-29 13:53:14 +0200 | [diff] [blame] | 364 | globfree(&g); |
Stefan Reinauer | f78a09b | 2015-04-03 20:01:38 +0200 | [diff] [blame] | 365 | } |
| 366 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 367 | static void zconf_endfile(void) |
| 368 | { |
| 369 | struct buffer *parent; |
| 370 | |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 371 | current_file = current_file->parent; |
| 372 | |
| 373 | parent = current_buf->parent; |
| 374 | if (parent) { |
| 375 | fclose(yyin); |
| 376 | yy_delete_buffer(YY_CURRENT_BUFFER); |
| 377 | yy_switch_to_buffer(parent->state); |
| 378 | } |
| 379 | free(current_buf); |
| 380 | current_buf = parent; |
| 381 | } |
| 382 | |
| 383 | int zconf_lineno(void) |
| 384 | { |
| 385 | return current_pos.lineno; |
| 386 | } |
| 387 | |
Patrick Georgi | d520840 | 2014-04-11 20:24:06 +0200 | [diff] [blame] | 388 | const char *zconf_curname(void) |
Patrick Georgi | 0588d19 | 2009-08-12 15:00:51 +0000 | [diff] [blame] | 389 | { |
| 390 | return current_pos.file ? current_pos.file->name : "<none>"; |
| 391 | } |