| 1 | %{ /* rclex.l -- lexer for Windows rc files parser */ |
| 2 | /* Copyright 1997, 1998 Free Software Foundation, Inc. |
| 3 | Written by Ian Lance Taylor, Cygnus Support. |
| 4 | |
| 5 | This file is part of GNU Binutils. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| 20 | 02111-1307, USA. */ |
| 21 | |
| 22 | /* This is a lex input file which generates a lexer used by the |
| 23 | Windows rc file parser. It basically just recognized a bunch of |
| 24 | keywords. */ |
| 25 | |
| 26 | #include "bfd.h" |
| 27 | #include "bucomm.h" |
| 28 | #include "libiberty.h" |
| 29 | #include "windres.h" |
| 30 | #include "rcparse.h" |
| 31 | |
| 32 | #include <ctype.h> |
| 33 | #include <assert.h> |
| 34 | |
| 35 | /* Whether we are in rcdata mode, in which we returns the lengths of |
| 36 | strings. */ |
| 37 | |
| 38 | static int rcdata_mode; |
| 39 | |
| 40 | /* Whether we are supressing lines from cpp (including windows.h or |
| 41 | headers from your C sources may bring in externs and typedefs). |
| 42 | When active, we return IGNORED_TOKEN, which lets us ignore these |
| 43 | outside of resource constructs. Thus, it isn't required to protect |
| 44 | all the non-preprocessor lines in your header files with #ifdef |
| 45 | RC_INVOKED. It also means your RC file can't include other RC |
| 46 | files if they're named "*.h". Sorry. Name them *.rch or whatever. */ |
| 47 | |
| 48 | static int suppress_cpp_data; |
| 49 | |
| 50 | #define MAYBE_RETURN(x) return suppress_cpp_data ? IGNORED_TOKEN : (x) |
| 51 | |
| 52 | /* The first filename we detect in the cpp output. We use this to |
| 53 | tell included files from the original file. */ |
| 54 | |
| 55 | static char *initial_fn; |
| 56 | |
| 57 | /* List of allocated strings. */ |
| 58 | |
| 59 | struct alloc_string |
| 60 | { |
| 61 | struct alloc_string *next; |
| 62 | char *s; |
| 63 | }; |
| 64 | |
| 65 | static struct alloc_string *strings; |
| 66 | |
| 67 | /* Local functions. */ |
| 68 | |
| 69 | static void cpp_line PARAMS ((const char *)); |
| 70 | static char *handle_quotes PARAMS ((const char *, unsigned long *)); |
| 71 | static char *get_string PARAMS ((int)); |
| 72 | |
| 73 | %} |
| 74 | |
| 75 | %% |
| 76 | |
| 77 | "BEGIN" { MAYBE_RETURN (BEG); } |
| 78 | "{" { MAYBE_RETURN (BEG); } |
| 79 | "END" { MAYBE_RETURN (END); } |
| 80 | "}" { MAYBE_RETURN (END); } |
| 81 | "ACCELERATORS" { MAYBE_RETURN (ACCELERATORS); } |
| 82 | "VIRTKEY" { MAYBE_RETURN (VIRTKEY); } |
| 83 | "ASCII" { MAYBE_RETURN (ASCII); } |
| 84 | "NOINVERT" { MAYBE_RETURN (NOINVERT); } |
| 85 | "SHIFT" { MAYBE_RETURN (SHIFT); } |
| 86 | "CONTROL" { MAYBE_RETURN (CONTROL); } |
| 87 | "ALT" { MAYBE_RETURN (ALT); } |
| 88 | "BITMAP" { MAYBE_RETURN (BITMAP); } |
| 89 | "CURSOR" { MAYBE_RETURN (CURSOR); } |
| 90 | "DIALOG" { MAYBE_RETURN (DIALOG); } |
| 91 | "DIALOGEX" { MAYBE_RETURN (DIALOGEX); } |
| 92 | "EXSTYLE" { MAYBE_RETURN (EXSTYLE); } |
| 93 | "CAPTION" { MAYBE_RETURN (CAPTION); } |
| 94 | "CLASS" { MAYBE_RETURN (CLASS); } |
| 95 | "STYLE" { MAYBE_RETURN (STYLE); } |
| 96 | "AUTO3STATE" { MAYBE_RETURN (AUTO3STATE); } |
| 97 | "AUTOCHECKBOX" { MAYBE_RETURN (AUTOCHECKBOX); } |
| 98 | "AUTORADIOBUTTON" { MAYBE_RETURN (AUTORADIOBUTTON); } |
| 99 | "CHECKBOX" { MAYBE_RETURN (CHECKBOX); } |
| 100 | "COMBOBOX" { MAYBE_RETURN (COMBOBOX); } |
| 101 | "CTEXT" { MAYBE_RETURN (CTEXT); } |
| 102 | "DEFPUSHBUTTON" { MAYBE_RETURN (DEFPUSHBUTTON); } |
| 103 | "EDITTEXT" { MAYBE_RETURN (EDITTEXT); } |
| 104 | "GROUPBOX" { MAYBE_RETURN (GROUPBOX); } |
| 105 | "LISTBOX" { MAYBE_RETURN (LISTBOX); } |
| 106 | "LTEXT" { MAYBE_RETURN (LTEXT); } |
| 107 | "PUSHBOX" { MAYBE_RETURN (PUSHBOX); } |
| 108 | "PUSHBUTTON" { MAYBE_RETURN (PUSHBUTTON); } |
| 109 | "RADIOBUTTON" { MAYBE_RETURN (RADIOBUTTON); } |
| 110 | "RTEXT" { MAYBE_RETURN (RTEXT); } |
| 111 | "SCROLLBAR" { MAYBE_RETURN (SCROLLBAR); } |
| 112 | "STATE3" { MAYBE_RETURN (STATE3); } |
| 113 | "USERBUTTON" { MAYBE_RETURN (USERBUTTON); } |
| 114 | "BEDIT" { MAYBE_RETURN (BEDIT); } |
| 115 | "HEDIT" { MAYBE_RETURN (HEDIT); } |
| 116 | "IEDIT" { MAYBE_RETURN (IEDIT); } |
| 117 | "FONT" { MAYBE_RETURN (FONT); } |
| 118 | "ICON" { MAYBE_RETURN (ICON); } |
| 119 | "LANGUAGE" { MAYBE_RETURN (LANGUAGE); } |
| 120 | "CHARACTERISTICS" { MAYBE_RETURN (CHARACTERISTICS); } |
| 121 | "VERSION" { MAYBE_RETURN (VERSIONK); } |
| 122 | "MENU" { MAYBE_RETURN (MENU); } |
| 123 | "MENUEX" { MAYBE_RETURN (MENUEX); } |
| 124 | "MENUITEM" { MAYBE_RETURN (MENUITEM); } |
| 125 | "SEPARATOR" { MAYBE_RETURN (SEPARATOR); } |
| 126 | "POPUP" { MAYBE_RETURN (POPUP); } |
| 127 | "CHECKED" { MAYBE_RETURN (CHECKED); } |
| 128 | "GRAYED" { MAYBE_RETURN (GRAYED); } |
| 129 | "HELP" { MAYBE_RETURN (HELP); } |
| 130 | "INACTIVE" { MAYBE_RETURN (INACTIVE); } |
| 131 | "MENUBARBREAK" { MAYBE_RETURN (MENUBARBREAK); } |
| 132 | "MENUBREAK" { MAYBE_RETURN (MENUBREAK); } |
| 133 | "MESSAGETABLE" { MAYBE_RETURN (MESSAGETABLE); } |
| 134 | "RCDATA" { MAYBE_RETURN (RCDATA); } |
| 135 | "STRINGTABLE" { MAYBE_RETURN (STRINGTABLE); } |
| 136 | "VERSIONINFO" { MAYBE_RETURN (VERSIONINFO); } |
| 137 | "FILEVERSION" { MAYBE_RETURN (FILEVERSION); } |
| 138 | "PRODUCTVERSION" { MAYBE_RETURN (PRODUCTVERSION); } |
| 139 | "FILEFLAGSMASK" { MAYBE_RETURN (FILEFLAGSMASK); } |
| 140 | "FILEFLAGS" { MAYBE_RETURN (FILEFLAGS); } |
| 141 | "FILEOS" { MAYBE_RETURN (FILEOS); } |
| 142 | "FILETYPE" { MAYBE_RETURN (FILETYPE); } |
| 143 | "FILESUBTYPE" { MAYBE_RETURN (FILESUBTYPE); } |
| 144 | "VALUE" { MAYBE_RETURN (VALUE); } |
| 145 | "MOVEABLE" { MAYBE_RETURN (MOVEABLE); } |
| 146 | "FIXED" { MAYBE_RETURN (FIXED); } |
| 147 | "PURE" { MAYBE_RETURN (PURE); } |
| 148 | "IMPURE" { MAYBE_RETURN (IMPURE); } |
| 149 | "PRELOAD" { MAYBE_RETURN (PRELOAD); } |
| 150 | "LOADONCALL" { MAYBE_RETURN (LOADONCALL); } |
| 151 | "DISCARDABLE" { MAYBE_RETURN (DISCARDABLE); } |
| 152 | "NOT" { MAYBE_RETURN (NOT); } |
| 153 | |
| 154 | "BLOCK"[ \t\n]*"\""[^\#\n]*"\"" { |
| 155 | char *s, *send; |
| 156 | |
| 157 | /* This is a hack to let us parse version |
| 158 | information easily. */ |
| 159 | |
| 160 | s = strchr (yytext, '"'); |
| 161 | ++s; |
| 162 | send = strchr (s, '"'); |
| 163 | if (strncmp (s, "StringFileInfo", |
| 164 | sizeof "StringFileInfo" - 1) == 0 |
| 165 | && s + sizeof "StringFileInfo" - 1 == send) |
| 166 | MAYBE_RETURN (BLOCKSTRINGFILEINFO); |
| 167 | else if (strncmp (s, "VarFileInfo", |
| 168 | sizeof "VarFileInfo" - 1) == 0 |
| 169 | && s + sizeof "VarFileInfo" - 1 == send) |
| 170 | MAYBE_RETURN (BLOCKVARFILEINFO); |
| 171 | else |
| 172 | { |
| 173 | char *r; |
| 174 | |
| 175 | r = get_string (send - s + 1); |
| 176 | strncpy (r, s, send - s); |
| 177 | r[send - s] = '\0'; |
| 178 | yylval.s = r; |
| 179 | MAYBE_RETURN (BLOCK); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | "#"[^\n]* { |
| 184 | cpp_line (yytext); |
| 185 | } |
| 186 | |
| 187 | [0-9][x0-9A-Fa-f]*L { |
| 188 | yylval.i.val = strtoul (yytext, 0, 0); |
| 189 | yylval.i.dword = 1; |
| 190 | MAYBE_RETURN (NUMBER); |
| 191 | } |
| 192 | |
| 193 | [0-9][x0-9A-Fa-f]* { |
| 194 | yylval.i.val = strtoul (yytext, 0, 0); |
| 195 | yylval.i.dword = 0; |
| 196 | MAYBE_RETURN (NUMBER); |
| 197 | } |
| 198 | |
| 199 | ("\""[^\"\n]*"\""[ \t]*)+ { |
| 200 | char *s; |
| 201 | unsigned long length; |
| 202 | |
| 203 | s = handle_quotes (yytext, &length); |
| 204 | if (! rcdata_mode) |
| 205 | { |
| 206 | yylval.s = s; |
| 207 | MAYBE_RETURN (QUOTEDSTRING); |
| 208 | } |
| 209 | else |
| 210 | { |
| 211 | yylval.ss.length = length; |
| 212 | yylval.ss.s = s; |
| 213 | MAYBE_RETURN (SIZEDSTRING); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | [A-Za-z][^ ,\t\r\n]* { |
| 218 | char *s; |
| 219 | |
| 220 | /* I rejected comma in a string in order to |
| 221 | handle VIRTKEY, CONTROL in an accelerator |
| 222 | resource. This means that an unquoted |
| 223 | file name can not contain a comma. I |
| 224 | don't know what rc permits. */ |
| 225 | |
| 226 | s = get_string (strlen (yytext) + 1); |
| 227 | strcpy (s, yytext); |
| 228 | yylval.s = s; |
| 229 | MAYBE_RETURN (STRING); |
| 230 | } |
| 231 | |
| 232 | [\n] { ++rc_lineno; } |
| 233 | [ \t\r]+ { /* ignore whitespace */ } |
| 234 | . { MAYBE_RETURN (*yytext); } |
| 235 | |
| 236 | %% |
| 237 | #ifndef yywrap |
| 238 | /* This is needed for some versions of lex. */ |
| 239 | int yywrap () |
| 240 | { |
| 241 | return 1; |
| 242 | } |
| 243 | #endif |
| 244 | |
| 245 | /* Handle a C preprocessor line. */ |
| 246 | |
| 247 | static void |
| 248 | cpp_line (s) |
| 249 | const char *s; |
| 250 | { |
| 251 | int line; |
| 252 | char *send, *fn; |
| 253 | |
| 254 | ++s; |
| 255 | while (isspace ((unsigned char) *s)) |
| 256 | ++s; |
| 257 | |
| 258 | line = strtol (s, &send, 0); |
| 259 | if (*send != '\0' && ! isspace ((unsigned char) *send)) |
| 260 | return; |
| 261 | |
| 262 | /* Subtract 1 because we are about to count the newline. */ |
| 263 | rc_lineno = line - 1; |
| 264 | |
| 265 | s = send; |
| 266 | while (isspace ((unsigned char) *s)) |
| 267 | ++s; |
| 268 | |
| 269 | if (*s != '"') |
| 270 | return; |
| 271 | |
| 272 | ++s; |
| 273 | send = strchr (s, '"'); |
| 274 | if (send == NULL) |
| 275 | return; |
| 276 | |
| 277 | fn = (char *) xmalloc (send - s + 1); |
| 278 | strncpy (fn, s, send - s); |
| 279 | fn[send - s] = '\0'; |
| 280 | |
| 281 | free (rc_filename); |
| 282 | rc_filename = fn; |
| 283 | |
| 284 | if (!initial_fn) |
| 285 | { |
| 286 | initial_fn = xmalloc (strlen (fn) + 1); |
| 287 | strcpy(initial_fn, fn); |
| 288 | } |
| 289 | |
| 290 | /* Allow the initial file, regardless of name. Suppress all other |
| 291 | files if they end in ".h" (this allows included "*.rc") */ |
| 292 | if (strcmp (initial_fn, fn) == 0 |
| 293 | || strcmp (fn + strlen (fn) - 2, ".h") != 0) |
| 294 | suppress_cpp_data = 0; |
| 295 | else |
| 296 | suppress_cpp_data = 1; |
| 297 | } |
| 298 | |
| 299 | /* Handle a quoted string. The quotes are stripped. A pair of quotes |
| 300 | in a string are turned into a single quote. Adjacent strings are |
| 301 | merged separated by whitespace are merged, as in C. */ |
| 302 | |
| 303 | static char * |
| 304 | handle_quotes (input, len) |
| 305 | const char *input; |
| 306 | unsigned long *len; |
| 307 | { |
| 308 | char *ret, *s; |
| 309 | const char *t; |
| 310 | int ch; |
| 311 | |
| 312 | ret = get_string (strlen (input) + 1); |
| 313 | |
| 314 | s = ret; |
| 315 | t = input; |
| 316 | if (*t == '"') |
| 317 | ++t; |
| 318 | while (*t != '\0') |
| 319 | { |
| 320 | if (*t == '\\') |
| 321 | { |
| 322 | ++t; |
| 323 | switch (*t) |
| 324 | { |
| 325 | case '\0': |
| 326 | rcparse_warning ("backslash at end of string"); |
| 327 | break; |
| 328 | |
| 329 | case '\"': |
| 330 | rcparse_warning ("use \"\" to put \" in a string"); |
| 331 | break; |
| 332 | |
| 333 | case 'a': |
| 334 | *s++ = ESCAPE_A; |
| 335 | ++t; |
| 336 | break; |
| 337 | |
| 338 | case 'b': |
| 339 | *s++ = ESCAPE_B; |
| 340 | ++t; |
| 341 | break; |
| 342 | |
| 343 | case 'f': |
| 344 | *s++ = ESCAPE_F; |
| 345 | ++t; |
| 346 | break; |
| 347 | |
| 348 | case 'n': |
| 349 | *s++ = ESCAPE_N; |
| 350 | ++t; |
| 351 | break; |
| 352 | |
| 353 | case 'r': |
| 354 | *s++ = ESCAPE_R; |
| 355 | ++t; |
| 356 | break; |
| 357 | |
| 358 | case 't': |
| 359 | *s++ = ESCAPE_T; |
| 360 | ++t; |
| 361 | break; |
| 362 | |
| 363 | case 'v': |
| 364 | *s++ = ESCAPE_V; |
| 365 | ++t; |
| 366 | break; |
| 367 | |
| 368 | case '\\': |
| 369 | *s++ = *t++; |
| 370 | break; |
| 371 | |
| 372 | case '0': case '1': case '2': case '3': |
| 373 | case '4': case '5': case '6': case '7': |
| 374 | ch = *t - '0'; |
| 375 | ++t; |
| 376 | if (*t >= '0' && *t <= '7') |
| 377 | { |
| 378 | ch = (ch << 3) | (*t - '0'); |
| 379 | ++t; |
| 380 | if (*t >= '0' && *t <= '7') |
| 381 | { |
| 382 | ch = (ch << 3) | (*t - '0'); |
| 383 | ++t; |
| 384 | } |
| 385 | } |
| 386 | *s++ = ch; |
| 387 | break; |
| 388 | |
| 389 | case 'x': |
| 390 | ++t; |
| 391 | ch = 0; |
| 392 | while (1) |
| 393 | { |
| 394 | if (*t >= '0' && *t <= '9') |
| 395 | ch = (ch << 4) | (*t - '0'); |
| 396 | else if (*t >= 'a' && *t <= 'f') |
| 397 | ch = (ch << 4) | (*t - 'a'); |
| 398 | else if (*t >= 'A' && *t <= 'F') |
| 399 | ch = (ch << 4) | (*t - 'A'); |
| 400 | else |
| 401 | break; |
| 402 | ++t; |
| 403 | } |
| 404 | *s++ = ch; |
| 405 | break; |
| 406 | |
| 407 | default: |
| 408 | rcparse_warning ("unrecognized escape sequence"); |
| 409 | *s++ = '\\'; |
| 410 | *s++ = *t++; |
| 411 | break; |
| 412 | } |
| 413 | } |
| 414 | else if (*t != '"') |
| 415 | *s++ = *t++; |
| 416 | else if (t[1] == '\0') |
| 417 | break; |
| 418 | else if (t[1] == '"') |
| 419 | { |
| 420 | *s++ = '"'; |
| 421 | t += 2; |
| 422 | } |
| 423 | else |
| 424 | { |
| 425 | ++t; |
| 426 | assert (isspace ((unsigned char) *t)); |
| 427 | while (isspace ((unsigned char) *t)) |
| 428 | ++t; |
| 429 | if (*t == '\0') |
| 430 | break; |
| 431 | assert (*t == '"'); |
| 432 | ++t; |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | *s = '\0'; |
| 437 | |
| 438 | *len = s - ret; |
| 439 | |
| 440 | return ret; |
| 441 | } |
| 442 | |
| 443 | /* Allocate a string of a given length. */ |
| 444 | |
| 445 | static char * |
| 446 | get_string (len) |
| 447 | int len; |
| 448 | { |
| 449 | struct alloc_string *as; |
| 450 | |
| 451 | as = (struct alloc_string *) xmalloc (sizeof *as); |
| 452 | as->s = xmalloc (len); |
| 453 | |
| 454 | as->next = strings; |
| 455 | strings = as->next; |
| 456 | |
| 457 | return as->s; |
| 458 | } |
| 459 | |
| 460 | /* Discard all the strings we have allocated. The parser calls this |
| 461 | when it no longer needs them. */ |
| 462 | |
| 463 | void |
| 464 | rcparse_discard_strings () |
| 465 | { |
| 466 | struct alloc_string *as; |
| 467 | |
| 468 | as = strings; |
| 469 | while (as != NULL) |
| 470 | { |
| 471 | struct alloc_string *n; |
| 472 | |
| 473 | free (as->s); |
| 474 | n = as->next; |
| 475 | free (as); |
| 476 | as = n; |
| 477 | } |
| 478 | |
| 479 | strings = NULL; |
| 480 | } |
| 481 | |
| 482 | /* Enter rcdata mode. */ |
| 483 | |
| 484 | void |
| 485 | rcparse_rcdata () |
| 486 | { |
| 487 | rcdata_mode = 1; |
| 488 | } |
| 489 | |
| 490 | /* Go back to normal mode from rcdata mode. */ |
| 491 | |
| 492 | void |
| 493 | rcparse_normal () |
| 494 | { |
| 495 | rcdata_mode = 0; |
| 496 | } |