1 /* mclex.c -- lexer for Windows mc files parser. 2 Copyright (C) 2007-2014 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 } 441
