| 1 | /* mclex.c -- lexer for Windows mc files parser. |
| 2 | Copyright (C) 2007-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | Written by Kai Tietz, Onevision. |
| 5 | |
| 6 | This file is part of GNU Binutils. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 21 | 02110-1301, USA. */ |
| 22 | |
| 23 | /* This is a lexer used by the Windows rc file parser. |
| 24 | It basically just recognized a bunch of keywords. */ |
| 25 | |
| 26 | #include "sysdep.h" |
| 27 | #include "bfd.h" |
| 28 | #include "bucomm.h" |
| 29 | #include "libiberty.h" |
| 30 | #include "safe-ctype.h" |
| 31 | #include "windmc.h" |
| 32 | #include "mcparse.h" |
| 33 | |
| 34 | #include <assert.h> |
| 35 | |
| 36 | /* Exported globals. */ |
| 37 | bfd_boolean mclex_want_nl = FALSE; |
| 38 | bfd_boolean mclex_want_line = FALSE; |
| 39 | bfd_boolean mclex_want_filename = FALSE; |
| 40 | |
| 41 | /* Local globals. */ |
| 42 | static unichar *input_stream = NULL; |
| 43 | static unichar *input_stream_pos = NULL; |
| 44 | static int input_line = 1; |
| 45 | static const char *input_filename = NULL; |
| 46 | |
| 47 | void |
| 48 | mc_set_content (const unichar *src) |
| 49 | { |
| 50 | if (!src) |
| 51 | return; |
| 52 | input_stream = input_stream_pos = unichar_dup (src); |
| 53 | } |
| 54 | |
| 55 | void |
| 56 | mc_set_inputfile (const char *name) |
| 57 | { |
| 58 | if (! name || *name == 0) |
| 59 | input_filename = "-"; |
| 60 | else |
| 61 | { |
| 62 | const char *s1 = strrchr (name, '/'); |
| 63 | const char *s2 = strrchr (name, '\\'); |
| 64 | |
| 65 | if (! s1) |
| 66 | s1 = s2; |
| 67 | if (s1 && s2 && s1 < s2) |
| 68 | s1 = s2; |
| 69 | if (! s1) |
| 70 | s1 = name; |
| 71 | else |
| 72 | s1++; |
| 73 | s1 = xstrdup (s1); |
| 74 | input_filename = s1; |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | static void |
| 79 | show_msg (const char *kind, const char *msg, va_list argp) |
| 80 | { |
| 81 | fprintf (stderr, "In %s at line %d: %s: ", input_filename, input_line, kind); |
| 82 | vfprintf (stderr, msg, argp); |
| 83 | fprintf (stderr, ".\n"); |
| 84 | } |
| 85 | |
| 86 | void |
| 87 | mc_warn (const char *s, ...) |
| 88 | { |
| 89 | va_list argp; |
| 90 | va_start (argp, s); |
| 91 | show_msg ("warning", s, argp); |
| 92 | va_end (argp); |
| 93 | } |
| 94 | |
| 95 | void |
| 96 | mc_fatal (const char *s, ...) |
| 97 | { |
| 98 | va_list argp; |
| 99 | va_start (argp, s); |
| 100 | show_msg ("fatal", s, argp); |
| 101 | va_end (argp); |
| 102 | xexit (1); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | int |
| 107 | yyerror (const char *s, ...) |
| 108 | { |
| 109 | va_list argp; |
| 110 | va_start (argp, s); |
| 111 | show_msg ("parser", s, argp); |
| 112 | va_end (argp); |
| 113 | return 1; |
| 114 | } |
| 115 | |
| 116 | static unichar * |
| 117 | get_diff (unichar *end, unichar *start) |
| 118 | { |
| 119 | unichar *ret; |
| 120 | unichar save = *end; |
| 121 | |
| 122 | *end = 0; |
| 123 | ret = unichar_dup (start); |
| 124 | *end = save; |
| 125 | return ret; |
| 126 | } |
| 127 | |
| 128 | static rc_uint_type |
| 129 | parse_digit (unichar ch) |
| 130 | { |
| 131 | rc_uint_type base = 10, v = 0, c; |
| 132 | |
| 133 | if (ch == '0') |
| 134 | { |
| 135 | base = 8; |
| 136 | switch (input_stream_pos[0]) |
| 137 | { |
| 138 | case 'x': case 'X': base = 16; input_stream_pos++; break; |
| 139 | case 'o': case 'O': base = 8; input_stream_pos++; break; |
| 140 | case 'b': case 'B': base = 2; input_stream_pos++; break; |
| 141 | } |
| 142 | } |
| 143 | else |
| 144 | v = (rc_uint_type) (ch - '0'); |
| 145 | |
| 146 | while ((ch = input_stream_pos[0]) != 0) |
| 147 | { |
| 148 | if (ch >= 'A' && ch <= 'F') |
| 149 | c = (rc_uint_type) (ch - 'A') + 10; |
| 150 | else if (ch >= 'a' && ch <= 'f') |
| 151 | c = (rc_uint_type) (ch - 'a') + 10; |
| 152 | else if (ch >= '0' && ch <= '9') |
| 153 | c = (rc_uint_type) (ch - '0'); |
| 154 | else |
| 155 | break; |
| 156 | v *= base; |
| 157 | v += c; |
| 158 | ++input_stream_pos; |
| 159 | } |
| 160 | if (input_stream_pos[0] == 'U' || input_stream_pos[0] == 'u') |
| 161 | input_stream_pos++; |
| 162 | if (input_stream_pos[0] == 'L' || input_stream_pos[0] == 'l') |
| 163 | input_stream_pos++; |
| 164 | if (input_stream_pos[0] == 'L' || input_stream_pos[0] == 'l') |
| 165 | input_stream_pos++; |
| 166 | return v; |
| 167 | } |
| 168 | |
| 169 | static mc_keyword *keyword_top = NULL; |
| 170 | |
| 171 | const mc_keyword * |
| 172 | enum_facility (int e) |
| 173 | { |
| 174 | mc_keyword *h = keyword_top; |
| 175 | |
| 176 | while (h != NULL) |
| 177 | { |
| 178 | while (h && strcmp (h->group_name, "facility") != 0) |
| 179 | h = h->next; |
| 180 | if (e == 0) |
| 181 | return h; |
| 182 | --e; |
| 183 | if (h) |
| 184 | h = h->next; |
| 185 | } |
| 186 | return h; |
| 187 | } |
| 188 | |
| 189 | const mc_keyword * |
| 190 | enum_severity (int e) |
| 191 | { |
| 192 | mc_keyword *h = keyword_top; |
| 193 | |
| 194 | while (h != NULL) |
| 195 | { |
| 196 | while (h && strcmp (h->group_name, "severity") != 0) |
| 197 | h = h->next; |
| 198 | if (e == 0) |
| 199 | return h; |
| 200 | --e; |
| 201 | if (h) |
| 202 | h = h->next; |
| 203 | } |
| 204 | return h; |
| 205 | } |
| 206 | |
| 207 | static void |
| 208 | mc_add_keyword_ascii (const char *sz, int rid, const char *grp, rc_uint_type nv, const char *sv) |
| 209 | { |
| 210 | unichar *usz, *usv = NULL; |
| 211 | rc_uint_type usz_len; |
| 212 | |
| 213 | unicode_from_codepage (&usz_len, &usz, sz, CP_ACP); |
| 214 | if (sv) |
| 215 | unicode_from_codepage (&usz_len, &usv, sv, CP_ACP); |
| 216 | mc_add_keyword (usz, rid, grp, nv, usv); |
| 217 | } |
| 218 | |
| 219 | void |
| 220 | mc_add_keyword (unichar *usz, int rid, const char *grp, rc_uint_type nv, unichar *sv) |
| 221 | { |
| 222 | mc_keyword *p, *c, *n; |
| 223 | size_t len = unichar_len (usz); |
| 224 | |
| 225 | c = keyword_top; |
| 226 | p = NULL; |
| 227 | while (c != NULL) |
| 228 | { |
| 229 | if (c->len > len) |
| 230 | break; |
| 231 | if (c->len == len) |
| 232 | { |
| 233 | int e = memcmp (usz, c->usz, len * sizeof (unichar)); |
| 234 | |
| 235 | if (e < 0) |
| 236 | break; |
| 237 | if (! e) |
| 238 | { |
| 239 | if (! strcmp (grp, "keyword") || strcmp (c->group_name, grp) != 0) |
| 240 | fatal (_("Duplicate symbol entered into keyword list.")); |
| 241 | c->rid = rid; |
| 242 | c->nval = nv; |
| 243 | c->sval = (!sv ? NULL : unichar_dup (sv)); |
| 244 | if (! strcmp (grp, "language")) |
| 245 | { |
| 246 | const wind_language_t *lag = wind_find_language_by_id ((unsigned) nv); |
| 247 | |
| 248 | if (lag == NULL) |
| 249 | fatal ("Language ident 0x%lx is not resolvable.\n", (long) nv); |
| 250 | memcpy (&c->lang_info, lag, sizeof (*lag)); |
| 251 | } |
| 252 | return; |
| 253 | } |
| 254 | } |
| 255 | c = (p = c)->next; |
| 256 | } |
| 257 | n = xmalloc (sizeof (mc_keyword)); |
| 258 | n->next = c; |
| 259 | n->len = len; |
| 260 | n->group_name = grp; |
| 261 | n->usz = usz; |
| 262 | n->rid = rid; |
| 263 | n->nval = nv; |
| 264 | n->sval = (!sv ? NULL : unichar_dup (sv)); |
| 265 | if (! strcmp (grp, "language")) |
| 266 | { |
| 267 | const wind_language_t *lag = wind_find_language_by_id ((unsigned) nv); |
| 268 | if (lag == NULL) |
| 269 | fatal ("Language ident 0x%lx is not resolvable.\n", (long) nv); |
| 270 | memcpy (&n->lang_info, lag, sizeof (*lag)); |
| 271 | } |
| 272 | if (! p) |
| 273 | keyword_top = n; |
| 274 | else |
| 275 | p->next = n; |
| 276 | } |
| 277 | |
| 278 | static int |
| 279 | mc_token (const unichar *t, size_t len) |
| 280 | { |
| 281 | static int was_init = 0; |
| 282 | mc_keyword *k; |
| 283 | |
| 284 | if (! was_init) |
| 285 | { |
| 286 | was_init = 1; |
| 287 | mc_add_keyword_ascii ("OutputBase", MCOUTPUTBASE, "keyword", 0, NULL); |
| 288 | mc_add_keyword_ascii ("MessageIdTypedef", MCMESSAGEIDTYPEDEF, "keyword", 0, NULL); |
| 289 | mc_add_keyword_ascii ("SeverityNames", MCSEVERITYNAMES, "keyword", 0, NULL); |
| 290 | mc_add_keyword_ascii ("FacilityNames", MCFACILITYNAMES, "keyword", 0, NULL); |
| 291 | mc_add_keyword_ascii ("LanguageNames", MCLANGUAGENAMES, "keyword", 0, NULL); |
| 292 | mc_add_keyword_ascii ("MessageId", MCMESSAGEID, "keyword", 0, NULL); |
| 293 | mc_add_keyword_ascii ("Severity", MCSEVERITY, "keyword", 0, NULL); |
| 294 | mc_add_keyword_ascii ("Facility", MCFACILITY, "keyword", 0, NULL); |
| 295 | mc_add_keyword_ascii ("SymbolicName", MCSYMBOLICNAME, "keyword", 0, NULL); |
| 296 | mc_add_keyword_ascii ("Language", MCLANGUAGE, "keyword", 0, NULL); |
| 297 | mc_add_keyword_ascii ("Success", MCTOKEN, "severity", 0, NULL); |
| 298 | mc_add_keyword_ascii ("Informational", MCTOKEN, "severity", 1, NULL); |
| 299 | mc_add_keyword_ascii ("Warning", MCTOKEN, "severity", 2, NULL); |
| 300 | mc_add_keyword_ascii ("Error", MCTOKEN, "severity", 3, NULL); |
| 301 | mc_add_keyword_ascii ("System", MCTOKEN, "facility", 0xff, NULL); |
| 302 | mc_add_keyword_ascii ("Application", MCTOKEN, "facility", 0xfff, NULL); |
| 303 | mc_add_keyword_ascii ("English", MCTOKEN, "language", 0x409, "MSG00001"); |
| 304 | } |
| 305 | k = keyword_top; |
| 306 | if (!len || !t || *t == 0) |
| 307 | return -1; |
| 308 | while (k != NULL) |
| 309 | { |
| 310 | if (k->len > len) |
| 311 | break; |
| 312 | if (k->len == len) |
| 313 | { |
| 314 | if (! memcmp (k->usz, t, len * sizeof (unichar))) |
| 315 | { |
| 316 | if (k->rid == MCTOKEN) |
| 317 | yylval.tok = k; |
| 318 | return k->rid; |
| 319 | } |
| 320 | } |
| 321 | k = k->next; |
| 322 | } |
| 323 | return -1; |
| 324 | } |
| 325 | |
| 326 | int |
| 327 | yylex (void) |
| 328 | { |
| 329 | unichar *start_token; |
| 330 | unichar ch; |
| 331 | |
| 332 | if (! input_stream_pos) |
| 333 | { |
| 334 | fatal ("Input stream not setuped.\n"); |
| 335 | return -1; |
| 336 | } |
| 337 | if (mclex_want_line) |
| 338 | { |
| 339 | start_token = input_stream_pos; |
| 340 | if (input_stream_pos[0] == '.' |
| 341 | && (input_stream_pos[1] == '\n' |
| 342 | || (input_stream_pos[1] == '\r' && input_stream_pos[2] == '\n'))) |
| 343 | { |
| 344 | mclex_want_line = FALSE; |
| 345 | while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n') |
| 346 | ++input_stream_pos; |
| 347 | if (input_stream_pos[0] == '\n') |
| 348 | ++input_stream_pos; |
| 349 | return MCENDLINE; |
| 350 | } |
| 351 | while (input_stream_pos[0] != 0 && input_stream_pos[0] != '\n') |
| 352 | ++input_stream_pos; |
| 353 | if (input_stream_pos[0] == '\n') |
| 354 | ++input_stream_pos; |
| 355 | yylval.ustr = get_diff (input_stream_pos, start_token); |
| 356 | return MCLINE; |
| 357 | } |
| 358 | while ((ch = input_stream_pos[0]) <= 0x20) |
| 359 | { |
| 360 | if (ch == 0) |
| 361 | return -1; |
| 362 | ++input_stream_pos; |
| 363 | if (ch == '\n') |
| 364 | input_line += 1; |
| 365 | if (mclex_want_nl && ch == '\n') |
| 366 | { |
| 367 | mclex_want_nl = FALSE; |
| 368 | return NL; |
| 369 | } |
| 370 | } |
| 371 | start_token = input_stream_pos; |
| 372 | ++input_stream_pos; |
| 373 | if (mclex_want_filename) |
| 374 | { |
| 375 | mclex_want_filename = FALSE; |
| 376 | if (ch == '"') |
| 377 | { |
| 378 | start_token++; |
| 379 | while ((ch = input_stream_pos[0]) != 0) |
| 380 | { |
| 381 | if (ch == '"') |
| 382 | break; |
| 383 | ++input_stream_pos; |
| 384 | } |
| 385 | yylval.ustr = get_diff (input_stream_pos, start_token); |
| 386 | if (ch == '"') |
| 387 | ++input_stream_pos; |
| 388 | } |
| 389 | else |
| 390 | { |
| 391 | while ((ch = input_stream_pos[0]) != 0) |
| 392 | { |
| 393 | if (ch <= 0x20 || ch == ')') |
| 394 | break; |
| 395 | ++input_stream_pos; |
| 396 | } |
| 397 | yylval.ustr = get_diff (input_stream_pos, start_token); |
| 398 | } |
| 399 | return MCFILENAME; |
| 400 | } |
| 401 | switch (ch) |
| 402 | { |
| 403 | case ';': |
| 404 | ++start_token; |
| 405 | while (input_stream_pos[0] != '\n' && input_stream_pos[0] != 0) |
| 406 | ++input_stream_pos; |
| 407 | if (input_stream_pos[0] == '\n') |
| 408 | input_stream_pos++; |
| 409 | yylval.ustr = get_diff (input_stream_pos, start_token); |
| 410 | return MCCOMMENT; |
| 411 | case '=': |
| 412 | return '='; |
| 413 | case '(': |
| 414 | return '('; |
| 415 | case ')': |
| 416 | return ')'; |
| 417 | case '+': |
| 418 | return '+'; |
| 419 | case ':': |
| 420 | return ':'; |
| 421 | case '0': case '1': case '2': case '3': case '4': |
| 422 | case '5': case '6': case '7': case '8': case '9': |
| 423 | yylval.ival = parse_digit (ch); |
| 424 | return MCNUMBER; |
| 425 | default: |
| 426 | if (ch >= 0x40) |
| 427 | { |
| 428 | int ret; |
| 429 | while (input_stream_pos[0] >= 0x40 || (input_stream_pos[0] >= '0' && input_stream_pos[0] <= '9')) |
| 430 | ++input_stream_pos; |
| 431 | ret = mc_token (start_token, (size_t) (input_stream_pos - start_token)); |
| 432 | if (ret != -1) |
| 433 | return ret; |
| 434 | yylval.ustr = get_diff (input_stream_pos, start_token); |
| 435 | return MCIDENT; |
| 436 | } |
| 437 | yyerror ("illegal character 0x%x.", ch); |
| 438 | } |
| 439 | return -1; |
| 440 | } |