git.oblomov.eu Git - wine/blob - tools/wrc/parser.l

   1 /* -*-C-*-
   2  *
   3  * Copyright 1998-2000  Bertho A. Stultiens (BS)
   4  *
   5  * 21-May-2000 BS       - Fixed the ident requirement of resource names
   6  *                        which can be keywords.
   7  * 30-Apr-2000 BS       - Reintegration into the wine-tree
   8  * 11-Jan-2000 BS       - Very drastic cleanup because we don't have a
   9  *                        preprocessor in here anymore.
  10  * 02-Jan-2000 BS       - Removed the preprocessor code
  11  * 23-Dec-1999 BS       - Removed the copyright for Martin von Loewis.
  12  *                        There is really nothing left of his code in
  13  *                        this parser.
  14  * 20-Jun-1998 BS       - Changed the filename conversion. Filenames are
  15  *                        case-sensitive inder *nix, but not under dos.
  16  *                        default behaviour is to convert to lower case.
  17  *                      - All backslashes are converted to forward and
  18  *                        both single and double slash is recognized as
  19  *                        MS/Borland does.
  20  *                      - Fixed a bug in 'yywf' case that prevented
  21  *                        double quoted names to be scanned propperly.
  22  *
  23  * 19-May-1998 BS       - Started to build a preprocessor.
  24  *                      - Changed keyword processing completely to
  25  *                        table-lookups.
  26  *
  27  * 20-Apr-1998 BS       - Added ';' comment stripping
  28  *
  29  * 17-Apr-1998 BS       - Made the win32 keywords optional when compiling in
  30  *                        16bit mode
  31  *
  32  * 15-Apr-1998 BS       - Changed string handling to include escapes
  33  *                      - Added unicode string handling (no codepage
  34  *                        translation though).
  35  *                      - 'Borrowed' the main idea of string scanning from
  36  *                        the flex manual pages.
  37  *                      - Added conditional handling of scanning depending
  38  *                        on the state of the parser. This was mainly required
  39  *                        to distinguish a file to load or raw data that
  40  *                        follows. MS's definition of filenames is rather
  41  *                        complex... It can be unquoted or double quoted. If
  42  *                        double quoted, then the '\\' char is not automatically
  43  *                        escaped according to Borland's rc compiler, but it
  44  *                        accepts both "\\path\\file.rc" and "\path\file.rc".
  45  *                        This makes life very hard! I go for the escaped
  46  *                        version, as this seems to be the documented way...
  47  *                      - Single quoted strings are now parsed and converted
  48  *                        here.
  49  *                      - Added comment stripping. The implementation is
  50  *                        'borrowed' from the flex manpages.
  51  *                      - Rebuild string processing so that it may contain
  52  *                        escaped '\0'.
  53  */
  54
  55 /* Exclusive string handling */
  56 %x yystr
  57 /* Exclusive unicode string handling */
  58 %x yylstr
  59 /* Exclusive rcdata single quoted data handling */
  60 %x yyrcd
  61 /* Exclusive comment eating... */
  62 %x comment
  63 /* Set when stripping c-junk */
  64 %x pp_stripe
  65 %x pp_strips
  66 %x pp_stripp
  67 %x pp_stripp_final
  68 /* Set when scanning #line style directives */
  69 %x pp_line
  70
  71 %option stack
  72 %option never-interactive
  73
  74 /* Some shortcut definitions */
  75 ws      [ \f\t\r]
  76 cident  [a-zA-Z_][0-9a-zA-Z_]*
  77
  78 %{
  79
  80 /*#define LEX_DEBUG*/
  81
  82 #include "config.h"
  83
  84 #include <stdio.h>
  85 #include <stdlib.h>
  86 #include <string.h>
  87 #include <ctype.h>
  88 #include <assert.h>
  89
  90 #include "wrc.h"
  91 #include "utils.h"
  92 #include "preproc.h"
  93 #include "parser.h"
  94 #include "newstruc.h"
  95
  96 #include "y.tab.h"
  97
  98 #define YY_USE_PROTOS
  99 #define YY_NO_UNPUT
 100 #define YY_NO_TOP_STATE
 101
 102 /* Always update the current character position within a line */
 103 #define YY_USER_ACTION  char_number+=yyleng; wanted_id = want_id; want_id = 0;
 104
 105 static void addcchar(char c);
 106 static void addwchar(short s);
 107 static string_t *get_buffered_cstring(void);
 108 static string_t *get_buffered_wstring(void);
 109 static string_t *make_string(char *s);
 110
 111 static char *cbuffer;           /* Buffers for string collection */
 112 static int cbufidx;
 113 static int cbufalloc = 0;
 114 static short *wbuffer;
 115 static int wbufidx;
 116 static int wbufalloc = 0;
 117 static int stripslevel = 0;     /* Count {} during pp_strips/pp_stripe mode */
 118 static int stripplevel = 0;     /* Count () during pp_strips mode */
 119 static int cjunk_tagline;       /* Where did we start stripping (helps error tracking) */
 120
 121 /*
 122  * This one is a bit tricky.
 123  * We set 'want_id' in the parser to get the first
 124  * identifier we get across in the scanner, but we
 125  * also want it to be reset at nearly any token we
 126  * see. Exceptions are:
 127  * - newlines
 128  * - comments
 129  * - whitespace
 130  *
 131  * The scanner will automatically reset 'want_id'
 132  * after *each* scanner reduction and puts is value
 133  * into the var below. In this way we can see the
 134  * state after the YY_RULE_SETUP (i.e. the user action;
 135  * see above) and don't have to worry too much when
 136  * it needs to be reset.
 137  */
 138 static int wanted_id = 0;
 139 static int save_wanted_id;      /* To save across comment reductions */
 140
 141 struct keyword {
 142         char    *keyword;
 143         int     token;
 144         int     isextension;
 145         int     needcase;
 146         int     alwayskw;
 147 };
 148
 149 static struct keyword keywords[] = {
 150         { "ACCELERATORS",       tACCELERATORS,          0, 0, 0},
 151         { "ALT",                tALT,                   0, 0, 0},
 152         { "ASCII",              tASCII,                 0, 0, 0},
 153         { "AUTO3STATE",         tAUTO3STATE,            1, 0, 0},
 154         { "AUTOCHECKBOX",       tAUTOCHECKBOX,          1, 0, 0},
 155         { "AUTORADIOBUTTON",    tAUTORADIOBUTTON,       1, 0, 0},
 156         { "BEGIN",              tBEGIN,                 0, 0, 0},
 157         { "BITMAP",             tBITMAP,                0, 0, 0},
 158         { "BLOCK",              tBLOCK,                 0, 0, 0},
 159         { "BUTTON",             tBUTTON,                1, 0, 0},
 160         { "CAPTION",            tCAPTION,               0, 0, 0},
 161         { "CHARACTERISTICS",    tCHARACTERISTICS,       1, 0, 0},
 162         { "CHECKBOX",           tCHECKBOX,              0, 0, 0},
 163         { "CHECKED",            tCHECKED,               0, 0, 0},
 164         { "CLASS",              tCLASS,                 0, 0, 0},
 165         { "COMBOBOX",           tCOMBOBOX,              0, 0, 0},
 166         { "CONTROL",            tCONTROL,               0, 0, 0},
 167         { "CTEXT",              tCTEXT,                 0, 0, 0},
 168         { "CURSOR",             tCURSOR,                0, 0, 0},
 169         { "DEFPUSHBUTTON",      tDEFPUSHBUTTON,         0, 0, 0},
 170         { "DIALOG",             tDIALOG,                0, 0, 0},
 171         { "DIALOGEX",           tDIALOGEX,              1, 0, 0},
 172         { "DISCARDABLE",        tDISCARDABLE,           0, 0, 0},
 173         { "DLGINIT",            tDLGINIT,               0, 0, 0},
 174         { "EDITTEXT",           tEDITTEXT,              0, 0, 0},
 175         { "END",                tEND,                   0, 0, 0},
 176         { "enum",               tENUM,                  0, 1, 1},
 177         { "EXSTYLE",            tEXSTYLE,               0, 0, 0},
 178         { "extern",             tEXTERN,                0, 1, 1},
 179         { "FILEFLAGS",          tFILEFLAGS,             0, 0, 0},
 180         { "FILEFLAGSMASK",      tFILEFLAGSMASK,         0, 0, 0},
 181         { "FILEOS",             tFILEOS,                0, 0, 0},
 182         { "FILESUBTYPE",        tFILESUBTYPE,           0, 0, 0},
 183         { "FILETYPE",           tFILETYPE,              0, 0, 0},
 184         { "FILEVERSION",        tFILEVERSION,           0, 0, 0},
 185         { "FIXED",              tFIXED,                 0, 0, 0},
 186         { "FONT",               tFONT,                  0, 0, 0},
 187         { "FONTDIR",            tFONTDIR,               0, 0, 0},       /* This is a Borland BRC extension */
 188         { "GRAYED",             tGRAYED,                0, 0, 0},
 189         { "GROUPBOX",           tGROUPBOX,              0, 0, 0},
 190         { "HELP",               tHELP,                  0, 0, 0},
 191         { "ICON",               tICON,                  0, 0, 0},
 192         { "IMPURE",             tIMPURE,                0, 0, 0},
 193         { "INACTIVE",           tINACTIVE,              0, 0, 0},
 194         { "inline",             tINLINE,                0, 1, 1},
 195         { "LANGUAGE",           tLANGUAGE,              1, 0, 1},
 196         { "LISTBOX",            tLISTBOX,               0, 0, 0},
 197         { "LOADONCALL",         tLOADONCALL,            0, 0, 0},
 198         { "LTEXT",              tLTEXT,                 0, 0, 0},
 199         { "MENU",               tMENU,                  0, 0, 0},
 200         { "MENUBARBREAK",       tMENUBARBREAK,          0, 0, 0},
 201         { "MENUBREAK",          tMENUBREAK,             0, 0, 0},
 202         { "MENUEX",             tMENUEX,                1, 0, 0},
 203         { "MENUITEM",           tMENUITEM,              0, 0, 0},
 204         { "MESSAGETABLE",       tMESSAGETABLE,          1, 0, 0},
 205         { "MOVEABLE",           tMOVEABLE,              0, 0, 0},
 206         { "NOINVERT",           tNOINVERT,              0, 0, 0},
 207         { "NOT",                tNOT,                   0, 0, 0},
 208         { "POPUP",              tPOPUP,                 0, 0, 0},
 209         { "PRELOAD",            tPRELOAD,               0, 0, 0},
 210         { "PRODUCTVERSION",     tPRODUCTVERSION,        0, 0, 0},
 211         { "PURE",               tPURE,                  0, 0, 0},
 212         { "PUSHBUTTON",         tPUSHBUTTON,            0, 0, 0},
 213         { "RADIOBUTTON",        tRADIOBUTTON,           0, 0, 0},
 214         { "RCDATA",             tRCDATA,                0, 0, 0},
 215         { "RTEXT",              tRTEXT,                 0, 0, 0},
 216         { "SCROLLBAR",          tSCROLLBAR,             0, 0, 0},
 217         { "SEPARATOR",          tSEPARATOR,             0, 0, 0},
 218         { "SHIFT",              tSHIFT,                 0, 0, 0},
 219         { "STATE3",             tSTATE3,                1, 0, 0},
 220         { "static",             tSTATIC,                0, 1, 1},
 221         { "STRING",             tSTRING,                0, 0, 0},
 222         { "STRINGTABLE",        tSTRINGTABLE,           0, 0, 1},
 223         { "struct",             tSTRUCT,                0, 1, 1},
 224         { "STYLE",              tSTYLE,                 0, 0, 0},
 225         { "TOOLBAR",            tTOOLBAR,               1, 0, 0},
 226         { "typedef",            tTYPEDEF,               0, 1, 1},
 227         { "VALUE",              tVALUE,                 0, 0, 0},
 228         { "VERSION",            tVERSION,               1, 0, 0},
 229         { "VERSIONINFO",        tVERSIONINFO,           0, 0, 0},
 230         { "VIRTKEY",            tVIRTKEY,               0, 0, 0}
 231 };
 232
 233 #define NKEYWORDS       (sizeof(keywords)/sizeof(keywords[0]))
 234 #define KWP(p)          ((struct keyword *)(p))
 235 static int kw_cmp_func(const void *s1, const void *s2)
 236 {
 237         int ret;
 238         ret = strcasecmp(KWP(s1)->keyword, KWP(s2)->keyword);
 239         if(!ret && (KWP(s1)->needcase || KWP(s2)->needcase))
 240                 return strcmp(KWP(s1)->keyword, KWP(s2)->keyword);
 241         else
 242                 return ret;
 243 }
 244
 245 #define KW_BSEARCH
 246 #define DO_SORT
 247 static struct keyword *iskeyword(char *kw)
 248 {
 249         struct keyword *kwp;
 250         struct keyword key;
 251         key.keyword = kw;
 252         key.needcase = 0;
 253 #ifdef DO_SORT
 254         {
 255                 /* Make sure that it is sorted for bsearsh */
 256                 static int sorted = 0;
 257                 if(!sorted)
 258                 {
 259                         qsort(keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
 260                         sorted = 1;
 261                 }
 262         }
 263 #endif
 264 #ifdef KW_BSEARCH
 265         kwp = bsearch(&key, keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
 266 #else
 267         {
 268                 int i;
 269                 for(i = 0; i < NKEYWORDS; i++)
 270                 {
 271                         if(!kw_cmp_func(&key, &keywords[i]))
 272                                 break;
 273                 }
 274                 if(i < NKEYWORDS)
 275                         kwp = &keywords[i];
 276                 else
 277                         kwp = NULL;
 278         }
 279 #endif
 280
 281         if(kwp == NULL || (kwp->isextension && !extensions))
 282                 return NULL;
 283         else
 284                 return kwp;
 285 }
 286
 287 %}
 288
 289 /*
 290  **************************************************************************
 291  * The flexer starts here
 292  **************************************************************************
 293  */
 294 %%
 295         /*
 296          * Catch the GCC-style line statements here and parse them.
 297          * This has the advantage that you can #include at any
 298          * stage in the resource file.
 299          * The preprocessor generates line directives in the format:
 300          * # <linenum> "filename" <codes>
 301          *
 302          * Codes can be a sequence of:
 303          * - 1 start of new file
 304          * - 2 returning to previous
 305          * - 3 system header
 306          * - 4 interpret as C-code
 307          *
 308          * 4 is not used and 1 mutually excludes 2
 309          * Anyhow, we are not really interested in these at all
 310          * because we only want to know the linenumber and
 311          * filename.
 312          */
 313 <INITIAL,pp_strips,pp_stripp>^{ws}*\#{ws}*      yy_push_state(pp_line);
 314 <pp_line>[^\n]* {
 315                 int lineno;
 316                 char *cptr;
 317                 char *fname;
 318                 yy_pop_state();
 319                 lineno = (int)strtol(yytext, &cptr, 10);
 320                 if(!lineno)
 321                         yyerror("Malformed '#...' line-directive; invalid linenumber");
 322                 fname = strchr(cptr, '"');
 323                 if(!fname)
 324                         yyerror("Malformed '#...' line-directive; missing filename");
 325                 fname++;
 326                 cptr = strchr(fname, '"');
 327                 if(!cptr)
 328                         yyerror("Malformed '#...' line-directive; missing terminating \"");
 329                 *cptr = '\0';
 330                 line_number = lineno - 1;       /* We didn't read the newline */
 331                 input_name = xstrdup(fname);
 332         }
 333
 334         /*
 335          * Strip everything until a ';' taking
 336          * into account braces {} for structures,
 337          * classes and enums.
 338          */
 339 <pp_strips>\{                   stripslevel++;
 340 <pp_strips>\}                   stripslevel--;
 341 <pp_strips>;                    if(!stripslevel) yy_pop_state();
 342 <pp_strips>\/[^*\n]             ; /* To catch comments */
 343 <pp_strips>[^\{\};\n#/]*        ; /* Ignore rest */
 344 <pp_strips>\n                   line_number++; char_number = 1;
 345
 346 <pp_stripp>\(                   stripplevel++;
 347 <pp_stripp>\)                   {
 348                                         stripplevel--;
 349                                         if(!stripplevel)
 350                                         {
 351                                                 yy_pop_state();
 352                                                 yy_push_state(pp_stripp_final);
 353                                         }
 354                                 }
 355 <pp_stripp>\/[^*\n]             ; /* To catch comments */
 356 <pp_stripp>[^\(\);\n#/]*        ; /* Ignore rest */
 357 <pp_stripp>\n                   line_number++; char_number = 1;
 358
 359 <pp_stripp_final>{ws}*          ; /* Ignore */
 360 <pp_stripp_final>;              yy_pop_state(); /* Kill the semicolon */
 361 <pp_stripp_final>\n             line_number++; char_number = 1; yy_pop_state();
 362 <pp_stripp_final>.              yyless(0); yy_pop_state();
 363
 364 \{                      return tBEGIN;
 365 \}                      return tEND;
 366
 367 [0-9]+[lL]?             { yylval.num = strtoul(yytext,  0, 10); return toupper(yytext[yyleng-1]) == 'L' ? tLNUMBER : tNUMBER; }
 368 0[xX][0-9A-Fa-f]+[lL]?  { yylval.num = strtoul(yytext,  0, 16); return toupper(yytext[yyleng-1]) == 'L' ? tLNUMBER : tNUMBER; }
 369 0[oO][0-7]+[lL]?        { yylval.num = strtoul(yytext+2, 0, 8); return toupper(yytext[yyleng-1]) == 'L' ? tLNUMBER : tNUMBER; }
 370
 371         /*
 372          * The next two rules scan identifiers and filenames.
 373          * This is achieved by using the priority ruling
 374          * of the scanner where a '.' is valid in a filename
 375          * and *only* in a filename. In this case, the second
 376          * rule will be reduced because it is longer.
 377          */
 378 [A-Za-z_0-9]+           {
 379                                 struct keyword *tok = iskeyword(yytext);
 380
 381                                 if(tok)
 382                                 {
 383                                         if(tok->token == tCLASS && !strcmp(yytext, "class"))
 384                                                 return tCPPCLASS;
 385                                         else if(wanted_id && !tok->alwayskw)
 386                                         {
 387                                                 yylval.str = make_string(yytext);
 388                                                 return tIDENT;
 389                                         }
 390                                         else
 391                                                 return tok->token;
 392                                 }
 393                                 else
 394                                 {
 395                                         yylval.str = make_string(yytext);
 396                                         return tIDENT;
 397                                 }
 398                         }
 399 [A-Za-z_0-9./\\]+               yylval.str = make_string(yytext); return tFILENAME;
 400
 401         /*
 402          * Wide string scanning
 403          */
 404 L\"                     {
 405                                 yy_push_state(yylstr);
 406                                 wbufidx = 0;
 407                                 if(!win32)
 408                                         yywarning("16bit resource contains unicode strings\n");
 409                         }
 410 <yylstr>\"{ws}+ |
 411 <yylstr>\"              {
 412                                 yy_pop_state();
 413                                 yylval.str = get_buffered_wstring();
 414                                 return tSTRING;
 415                         }
 416 <yylstr>\\[0-7]{1,6}    { /* octal escape sequence */
 417                                 int result;
 418                                 result = strtol(yytext+1, 0, 8);
 419                                 if ( result > 0xffff )
 420                                         yyerror("Character constant out of range");
 421                                 addwchar((short)result);
 422                         }
 423 <yylstr>\\x[0-9a-fA-F]{4} {  /* hex escape sequence */
 424                                 int result;
 425                                 result = strtol(yytext+2, 0, 16);
 426                                 addwchar((short)result);
 427                         }
 428 <yylstr>\\x[0-9a-fA-F]{1,3} {  yyerror("Invalid hex escape sequence '%s'", yytext); }
 429
 430 <yylstr>\\[0-9]+        yyerror("Bad escape secuence");
 431 <yylstr>\\a             addwchar('\a');
 432 <yylstr>\\b             addwchar('\b');
 433 <yylstr>\\f             addwchar('\f');
 434 <yylstr>\\n             addwchar('\n');
 435 <yylstr>\\r             addwchar('\r');
 436 <yylstr>\\t             addwchar('\t');
 437 <yylstr>\\v             addwchar('\v');
 438 <yylstr>\\(\n|.)        addwchar(yytext[1]);
 439 <yylstr>\\\r\n          addwchar(yytext[2]);
 440 <yylstr>\"\"            addcchar('\"');         /* "bla""bla"  -> "bla\"bla" */
 441 <yylstr>\\\"\"          addcchar('\"');         /* "bla\""bla" -> "bla\"bla" */
 442 <yylstr>\"{ws}+\"       ;                       /* "bla" "bla" -> "blabla" */
 443 <yylstr>[^\\\n\"]+      {
 444                                 char *yptr = yytext;
 445                                 while(*yptr)    /* FIXME: codepage translation */
 446                                         addwchar(*yptr++ & 0xff);
 447                         }
 448 <yylstr>\n              yyerror("Unterminated string");
 449
 450         /*
 451          * Normal string scanning
 452          */
 453 \"                      yy_push_state(yystr); cbufidx = 0;
 454 <yystr>\"{ws}+  |
 455 <yystr>\"               {
 456                                 yy_pop_state();
 457                                 yylval.str = get_buffered_cstring();
 458                                 return tSTRING;
 459                         }
 460 <yystr>\\[0-7]{1,3}     { /* octal escape sequence */
 461                                 int result;
 462                                 result = strtol(yytext+1, 0, 8);
 463                                 if ( result > 0xff )
 464                                         yyerror("Character constant out of range");
 465                                 addcchar((char)result);
 466                         }
 467 <yystr>\\x[0-9a-fA-F]{2} {  /* hex escape sequence */
 468                                 int result;
 469                                 result = strtol(yytext+2, 0, 16);
 470                                 addcchar((char)result);
 471                         }
 472 <yystr>\\x[0-9a-fA-F]   {  yyerror("Invalid hex escape sequence '%s'", yytext); }
 473
 474 <yystr>\\[0-9]+         yyerror("Bad escape secuence");
 475 <yystr>\\a              addcchar('\a');
 476 <yystr>\\b              addcchar('\b');
 477 <yystr>\\f              addcchar('\f');
 478 <yystr>\\n              addcchar('\n');
 479 <yystr>\\r              addcchar('\r');
 480 <yystr>\\t              addcchar('\t');
 481 <yystr>\\v              addcchar('\v');
 482 <yystr>\\(\n|.)         addcchar(yytext[1]);
 483 <yystr>\\\r\n           addcchar(yytext[2]);
 484 <yystr>[^\\\n\"]+       {
 485                                 char *yptr = yytext;
 486                                 while(*yptr)
 487                                         addcchar(*yptr++);
 488                         }
 489 <yystr>\"\"             addcchar('\"');         /* "bla""bla"   -> "bla\"bla" */
 490 <yystr>\\\"\"           addcchar('\"');         /* "bla\""bla"  -> "bla\"bla" */
 491 <yystr>\"{ws}+\"        ;                       /* "bla" "bla"  -> "blabla" */
 492 <yystr>\n               yyerror("Unterminated string");
 493
 494         /*
 495          * Raw data scanning
 496          */
 497 \'                      yy_push_state(yyrcd); cbufidx = 0;
 498 <yyrcd>\'               {
 499                                 yy_pop_state();
 500                                 yylval.raw = new_raw_data();
 501                                 yylval.raw->size = cbufidx;
 502                                 yylval.raw->data = xmalloc(yylval.raw->size);
 503                                 memcpy(yylval.raw->data, cbuffer, yylval.raw->size);
 504                                 return tRAWDATA;
 505                         }
 506 <yyrcd>[0-9a-fA-F]{2}   {
 507                                 int result;
 508                                 result = strtol(yytext, 0, 16);
 509                                 addcchar((char)result);
 510                         }
 511 <yyrcd>{ws}+            ;       /* Ignore space */
 512 <yyrcd>\n               line_number++; char_number = 1;
 513 <yyrcd>.                yyerror("Malformed data-line");
 514
 515         /*
 516          * Comment stripping
 517          * Should never occur after preprocessing
 518          */
 519 <INITIAL,pp_stripp,pp_strips>"/*"       {
 520                                 yy_push_state(comment);
 521                                 save_wanted_id = wanted_id;
 522                                 if(!no_preprocess)
 523                                         yywarning("Found comments after preprocessing, please report");
 524                         }
 525 <comment>[^*\n]*        ;
 526 <comment>"*"+[^*/\n]*   ;
 527 <comment>\n             line_number++; char_number = 1;
 528 <comment>"*"+"/"        yy_pop_state(); want_id = save_wanted_id;
 529
 530 ;[^\n]*                 want_id = wanted_id; /* not really comment, but left-over c-junk */
 531 "//"[^\n]*              want_id = wanted_id; if(!no_preprocess) yywarning("Found comments after preprocessing, please report");
 532
 533 \n                      {
 534                                 want_id = wanted_id;
 535                                 line_number++;
 536                                 char_number = 1;
 537                                 if(want_nl)
 538                                 {
 539                                         want_nl = 0;
 540                                         return tNL;
 541                                 }
 542                         }
 543 {ws}+                   want_id = wanted_id;    /* Eat whitespace */
 544
 545 <INITIAL>.              return yytext[0];
 546
 547 <<EOF>>                 {
 548                                 if(YY_START == pp_strips || YY_START == pp_stripe || YY_START == pp_stripp || YY_START == pp_stripp_final)
 549                                         yyerror("Unexpected end of file during c-junk scanning (started at %d)", cjunk_tagline);
 550                                 else
 551                                         yyterminate();
 552                         }
 553
 554 <*>.|\n                 {
 555                                 /* Catch all rule to find any unmatched text */
 556                                 if(*yytext == '\n')
 557                                 {
 558                                         line_number++;
 559                                         char_number = 1;
 560                                 }
 561                                 yywarning("Unmatched text '%c' (0x%02x) YY_START=%d stripslevel=%d",
 562                                         isprint(*yytext & 0xff) ? *yytext : '.', *yytext, YY_START,stripslevel);
 563                         }
 564
 565 %%
 566
 567 #ifndef yywrap
 568 int yywrap(void)
 569 {
 570 #if 0
 571         if(bufferstackidx > 0)
 572         {
 573                 return 0;
 574         }
 575 #endif
 576         return 1;
 577 }
 578 #endif
 579
 580 /* These dup functions copy the enclosed '\0' from
 581  * the resource string.
 582  */
 583 static void addcchar(char c)
 584 {
 585         if(cbufidx >= cbufalloc)
 586         {
 587                 cbufalloc += 1024;
 588                 cbuffer = xrealloc(cbuffer, cbufalloc * sizeof(cbuffer[0]));
 589                 if(cbufalloc > 65536)
 590                         yywarning("Reallocating string buffer larger than 64kB");
 591         }
 592         cbuffer[cbufidx++] = c;
 593 }
 594
 595 static void addwchar(short s)
 596 {
 597         if(wbufidx >= wbufalloc)
 598         {
 599                 wbufalloc += 1024;
 600                 wbuffer = xrealloc(wbuffer, wbufalloc * sizeof(wbuffer[0]));
 601                 if(wbufalloc > 65536)
 602                         yywarning("Reallocating wide string buffer larger than 64kB");
 603         }
 604
 605         /*
 606          * BS 08-Aug-1999 FIXME: The '& 0xff' is probably a bug, but I have
 607          * not experienced it yet and I seem to remember that this was for
 608          * a reason. But, as so many things you tend to forget why.
 609          * I guess that there were problems due to the sign extension of
 610          * shorts WRT chars (e.g. 0x80 becomes 0xff80 instead of 0x0080).
 611          * This should then be fixed in the lexer calling the function.
 612          */
 613         wbuffer[wbufidx++] = (short)(s & 0xff);
 614 }
 615
 616 static string_t *get_buffered_cstring(void)
 617 {
 618         string_t *str = new_string();
 619         str->size = cbufidx;
 620         str->type = str_char;
 621         str->str.cstr = (char *)xmalloc(cbufidx+1);
 622         memcpy(str->str.cstr, cbuffer, cbufidx);
 623         str->str.cstr[cbufidx] = '\0';
 624         return str;
 625 }
 626
 627 static string_t *get_buffered_wstring(void)
 628 {
 629         string_t *str = new_string();
 630         str->size = wbufidx;
 631         str->type = str_unicode;
 632         str->str.wstr = (short *)xmalloc(2*(wbufidx+1));
 633         memcpy(str->str.wstr, wbuffer, wbufidx);
 634         str->str.wstr[wbufidx] = 0;
 635         return str;
 636 }
 637
 638 static string_t *make_string(char *s)
 639 {
 640         string_t *str = new_string();
 641         str->size = strlen(s);
 642         str->type = str_char;
 643         str->str.cstr = (char *)xmalloc(str->size+1);
 644         memcpy(str->str.cstr, s, str->size+1);
 645         return str;
 646 }
 647
 648 /* Called from the parser to kill c-junk */
 649 void strip_extern(void)
 650 {
 651         cjunk_tagline = line_number;
 652         yy_push_state(pp_stripe);
 653 }
 654
 655 void strip_til_semicolon(void)
 656 {
 657         cjunk_tagline = line_number;
 658         yy_push_state(pp_strips);
 659 }
 660
 661 void strip_til_parenthesis(void)
 662 {
 663         cjunk_tagline = line_number;
 664         stripplevel = 1;        /* One scanned already */
 665         yy_push_state(pp_stripp);
 666 }
 667