639 lines
18 KiB
C
639 lines
18 KiB
C
/* -*-C-*-
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*
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* Copyright 1998-2000 Bertho A. Stultiens (BS)
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*
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* 21-May-2000 BS - Fixed the ident requirement of resource names
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* which can be keywords.
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* 30-Apr-2000 BS - Reintegration into the wine-tree
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* 11-Jan-2000 BS - Very drastic cleanup because we don't have a
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* preprocessor in here anymore.
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* 02-Jan-2000 BS - Removed the preprocessor code
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* 23-Dec-1999 BS - Removed the copyright for Martin von Loewis.
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* There is really nothing left of his code in
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* this parser.
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* 20-Jun-1998 BS - Changed the filename conversion. Filenames are
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* case-sensitive inder *nix, but not under dos.
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* default behaviour is to convert to lower case.
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* - All backslashes are converted to forward and
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* both single and double slash is recognized as
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* MS/Borland does.
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* - Fixed a bug in 'yywf' case that prevented
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* double quoted names to be scanned propperly.
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*
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* 19-May-1998 BS - Started to build a preprocessor.
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* - Changed keyword processing completely to
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* table-lookups.
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*
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* 20-Apr-1998 BS - Added ';' comment stripping
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*
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* 17-Apr-1998 BS - Made the win32 keywords optional when compiling in
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* 16bit mode
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*
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* 15-Apr-1998 BS - Changed string handling to include escapes
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* - Added unicode string handling (no codepage
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* translation though).
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* - 'Borrowed' the main idea of string scanning from
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* the flex manual pages.
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* - Added conditional handling of scanning depending
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* on the state of the parser. This was mainly required
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* to distinguish a file to load or raw data that
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* follows. MS's definition of filenames is rather
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* complex... It can be unquoted or double quoted. If
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* double quoted, then the '\\' char is not automatically
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* escaped according to Borland's rc compiler, but it
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* accepts both "\\path\\file.rc" and "\path\file.rc".
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* This makes life very hard! I go for the escaped
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* version, as this seems to be the documented way...
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* - Single quoted strings are now parsed and converted
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* here.
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* - Added comment stripping. The implementation is
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* 'borrowed' from the flex manpages.
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* - Rebuild string processing so that it may contain
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* escaped '\0'.
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*/
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/* Exclusive string handling */
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%x yystr
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/* Exclusive unicode string handling */
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%x yylstr
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/* Exclusive rcdata single quoted data handling */
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%x yyrcd
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/* Exclusive comment eating... */
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%x comment
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/* Set when stripping c-junk */
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%x pp_stripe
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%x pp_strips
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%x pp_stripp
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%x pp_stripp_final
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/* Set when scanning #line style directives */
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%x pp_line
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%option stack
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%option never-interactive
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/* Some shortcut definitions */
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ws [ \f\t\r]
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cident [a-zA-Z_][0-9a-zA-Z_]*
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%{
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/*#define LEX_DEBUG*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include "wrc.h"
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#include "utils.h"
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#include "preproc.h"
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#include "parser.h"
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#include "newstruc.h"
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#include "y.tab.h"
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#define YY_USE_PROTOS
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#define YY_NO_UNPUT
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#define YY_NO_TOP_STATE
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/* Always update the current character position within a line */
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#define YY_USER_ACTION char_number+=yyleng; wanted_id = want_id; want_id = 0;
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static void addcchar(char c);
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static void addwchar(short s);
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static string_t *get_buffered_cstring(void);
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static string_t *get_buffered_wstring(void);
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static string_t *make_string(char *s);
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static char *cbuffer; /* Buffers for string collection */
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static int cbufidx;
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static int cbufalloc = 0;
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static short *wbuffer;
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static int wbufidx;
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static int wbufalloc = 0;
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static int stripslevel = 0; /* Count {} during pp_strips/pp_stripe mode */
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static int stripplevel = 0; /* Count () during pp_strips mode */
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static int cjunk_tagline; /* Where did we start stripping (helps error tracking) */
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/*
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* This one is a bit tricky.
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* We set 'want_id' in the parser to get the first
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* identifier we get across in the scanner, but we
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* also want it to be reset at nearly any token we
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* see. Exceptions are:
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* - newlines
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* - comments
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* - whitespace
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*
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* The scanner will automatically reset 'want_id'
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* after *each* scanner reduction and puts is value
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* into the var below. In this way we can see the
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* state after the YY_RULE_SETUP (i.e. the user action;
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* see above) and don't have to worry too much when
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* it needs to be reset.
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*/
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static int wanted_id = 0;
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static int save_wanted_id; /* To save across comment reductions */
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struct keyword {
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char *keyword;
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int token;
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int isextension;
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int needcase;
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int alwayskw;
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};
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static struct keyword keywords[] = {
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{ "ACCELERATORS", tACCELERATORS, 0, 0, 0},
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{ "ALT", tALT, 0, 0, 0},
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{ "ASCII", tASCII, 0, 0, 0},
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{ "AUTO3STATE", tAUTO3STATE, 1, 0, 0},
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{ "AUTOCHECKBOX", tAUTOCHECKBOX, 1, 0, 0},
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{ "AUTORADIOBUTTON", tAUTORADIOBUTTON, 1, 0, 0},
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{ "BEGIN", tBEGIN, 0, 0, 0},
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{ "BITMAP", tBITMAP, 0, 0, 0},
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{ "BLOCK", tBLOCK, 0, 0, 0},
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{ "BUTTON", tBUTTON, 1, 0, 0},
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{ "CAPTION", tCAPTION, 0, 0, 0},
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{ "CHARACTERISTICS", tCHARACTERISTICS, 1, 0, 0},
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{ "CHECKBOX", tCHECKBOX, 0, 0, 0},
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{ "CHECKED", tCHECKED, 0, 0, 0},
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{ "CLASS", tCLASS, 0, 0, 0},
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{ "COMBOBOX", tCOMBOBOX, 0, 0, 0},
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{ "CONTROL", tCONTROL, 0, 0, 0},
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{ "CTEXT", tCTEXT, 0, 0, 0},
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{ "CURSOR", tCURSOR, 0, 0, 0},
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{ "DEFPUSHBUTTON", tDEFPUSHBUTTON, 0, 0, 0},
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{ "DIALOG", tDIALOG, 0, 0, 0},
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{ "DIALOGEX", tDIALOGEX, 1, 0, 0},
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{ "DISCARDABLE", tDISCARDABLE, 0, 0, 0},
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{ "DLGINIT", tDLGINIT, 0, 0, 0},
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{ "EDITTEXT", tEDITTEXT, 0, 0, 0},
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{ "END", tEND, 0, 0, 0},
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{ "EXSTYLE", tEXSTYLE, 0, 0, 0},
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{ "FILEFLAGS", tFILEFLAGS, 0, 0, 0},
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{ "FILEFLAGSMASK", tFILEFLAGSMASK, 0, 0, 0},
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{ "FILEOS", tFILEOS, 0, 0, 0},
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{ "FILESUBTYPE", tFILESUBTYPE, 0, 0, 0},
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{ "FILETYPE", tFILETYPE, 0, 0, 0},
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{ "FILEVERSION", tFILEVERSION, 0, 0, 0},
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{ "FIXED", tFIXED, 0, 0, 0},
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{ "FONT", tFONT, 0, 0, 0},
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{ "FONTDIR", tFONTDIR, 0, 0, 0}, /* This is a Borland BRC extension */
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{ "GRAYED", tGRAYED, 0, 0, 0},
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{ "GROUPBOX", tGROUPBOX, 0, 0, 0},
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{ "HELP", tHELP, 0, 0, 0},
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{ "ICON", tICON, 0, 0, 0},
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{ "IMPURE", tIMPURE, 0, 0, 0},
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{ "INACTIVE", tINACTIVE, 0, 0, 0},
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{ "LANGUAGE", tLANGUAGE, 1, 0, 1},
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{ "LISTBOX", tLISTBOX, 0, 0, 0},
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{ "LOADONCALL", tLOADONCALL, 0, 0, 0},
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{ "LTEXT", tLTEXT, 0, 0, 0},
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{ "MENU", tMENU, 0, 0, 0},
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{ "MENUBARBREAK", tMENUBARBREAK, 0, 0, 0},
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{ "MENUBREAK", tMENUBREAK, 0, 0, 0},
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{ "MENUEX", tMENUEX, 1, 0, 0},
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{ "MENUITEM", tMENUITEM, 0, 0, 0},
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{ "MESSAGETABLE", tMESSAGETABLE, 1, 0, 0},
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{ "MOVEABLE", tMOVEABLE, 0, 0, 0},
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{ "NOINVERT", tNOINVERT, 0, 0, 0},
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{ "NOT", tNOT, 0, 0, 0},
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{ "POPUP", tPOPUP, 0, 0, 0},
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{ "PRELOAD", tPRELOAD, 0, 0, 0},
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{ "PRODUCTVERSION", tPRODUCTVERSION, 0, 0, 0},
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{ "PURE", tPURE, 0, 0, 0},
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{ "PUSHBUTTON", tPUSHBUTTON, 0, 0, 0},
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{ "RADIOBUTTON", tRADIOBUTTON, 0, 0, 0},
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{ "RCDATA", tRCDATA, 0, 0, 0},
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{ "RTEXT", tRTEXT, 0, 0, 0},
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{ "SCROLLBAR", tSCROLLBAR, 0, 0, 0},
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{ "SEPARATOR", tSEPARATOR, 0, 0, 0},
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{ "SHIFT", tSHIFT, 0, 0, 0},
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{ "STATE3", tSTATE3, 1, 0, 0},
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{ "STRING", tSTRING, 0, 0, 0},
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{ "STRINGTABLE", tSTRINGTABLE, 0, 0, 1},
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{ "STYLE", tSTYLE, 0, 0, 0},
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{ "TOOLBAR", tTOOLBAR, 1, 0, 0},
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{ "VALUE", tVALUE, 0, 0, 0},
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{ "VERSION", tVERSION, 1, 0, 0},
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{ "VERSIONINFO", tVERSIONINFO, 0, 0, 0},
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{ "VIRTKEY", tVIRTKEY, 0, 0, 0}
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};
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#define NKEYWORDS (sizeof(keywords)/sizeof(keywords[0]))
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#define KWP(p) ((struct keyword *)(p))
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static int kw_cmp_func(const void *s1, const void *s2)
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{
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int ret;
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ret = strcasecmp(KWP(s1)->keyword, KWP(s2)->keyword);
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if(!ret && (KWP(s1)->needcase || KWP(s2)->needcase))
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return strcmp(KWP(s1)->keyword, KWP(s2)->keyword);
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else
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return ret;
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}
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#define KW_BSEARCH
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#define DO_SORT
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static struct keyword *iskeyword(char *kw)
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{
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struct keyword *kwp;
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struct keyword key;
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key.keyword = kw;
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key.needcase = 0;
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#ifdef DO_SORT
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{
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/* Make sure that it is sorted for bsearsh */
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static int sorted = 0;
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if(!sorted)
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{
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qsort(keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
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sorted = 1;
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}
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}
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#endif
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#ifdef KW_BSEARCH
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kwp = bsearch(&key, keywords, NKEYWORDS, sizeof(keywords[0]), kw_cmp_func);
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#else
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{
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int i;
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for(i = 0; i < NKEYWORDS; i++)
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{
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if(!kw_cmp_func(&key, &keywords[i]))
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break;
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}
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if(i < NKEYWORDS)
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kwp = &keywords[i];
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else
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kwp = NULL;
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}
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#endif
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if(kwp == NULL || (kwp->isextension && !extensions))
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return NULL;
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else
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return kwp;
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}
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%}
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/*
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**************************************************************************
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* The flexer starts here
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**************************************************************************
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*/
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%%
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/*
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* Catch the GCC-style line statements here and parse them.
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* This has the advantage that you can #include at any
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* stage in the resource file.
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* The preprocessor generates line directives in the format:
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* # <linenum> "filename" <codes>
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*
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* Codes can be a sequence of:
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* - 1 start of new file
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* - 2 returning to previous
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* - 3 system header
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* - 4 interpret as C-code
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*
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* 4 is not used and 1 mutually excludes 2
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* Anyhow, we are not really interested in these at all
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* because we only want to know the linenumber and
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* filename.
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*/
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<INITIAL,pp_strips,pp_stripp>^{ws}*\#{ws}* yy_push_state(pp_line);
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<pp_line>[^\n]* {
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int lineno;
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char *cptr;
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char *fname;
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yy_pop_state();
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lineno = (int)strtol(yytext, &cptr, 10);
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if(!lineno)
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yyerror("Malformed '#...' line-directive; invalid linenumber");
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fname = strchr(cptr, '"');
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if(!fname)
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yyerror("Malformed '#...' line-directive; missing filename");
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fname++;
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cptr = strchr(fname, '"');
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if(!cptr)
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yyerror("Malformed '#...' line-directive; missing terminating \"");
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*cptr = '\0';
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line_number = lineno - 1; /* We didn't read the newline */
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input_name = xstrdup(fname);
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}
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/*
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* Strip everything until a ';' taking
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* into account braces {} for structures,
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* classes and enums.
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*/
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<pp_strips>\{ stripslevel++;
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<pp_strips>\} stripslevel--;
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<pp_strips>; if(!stripslevel) yy_pop_state();
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<pp_strips>\/[^*\n] ; /* To catch comments */
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<pp_strips>[^\{\};\n#/]* ; /* Ignore rest */
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<pp_strips>\n line_number++; char_number = 1;
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<pp_stripp>\( stripplevel++;
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<pp_stripp>\) {
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stripplevel--;
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if(!stripplevel)
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{
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yy_pop_state();
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yy_push_state(pp_stripp_final);
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}
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}
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<pp_stripp>\/[^*\n] ; /* To catch comments */
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<pp_stripp>[^\(\);\n#/]* ; /* Ignore rest */
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<pp_stripp>\n line_number++; char_number = 1;
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<pp_stripp_final>{ws}* ; /* Ignore */
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<pp_stripp_final>; yy_pop_state(); /* Kill the semicolon */
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<pp_stripp_final>\n line_number++; char_number = 1; yy_pop_state();
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<pp_stripp_final>. yyless(0); yy_pop_state();
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\{ return tBEGIN;
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\} return tEND;
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[0-9]+[lL]? { yylval.num = strtoul(yytext, 0, 10); return toupper(yytext[yyleng-1]) == 'L' ? tLNUMBER : tNUMBER; }
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0[xX][0-9A-Fa-f]+[lL]? { yylval.num = strtoul(yytext, 0, 16); return toupper(yytext[yyleng-1]) == 'L' ? tLNUMBER : tNUMBER; }
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0[oO][0-7]+[lL]? { yylval.num = strtoul(yytext+2, 0, 8); return toupper(yytext[yyleng-1]) == 'L' ? tLNUMBER : tNUMBER; }
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/*
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* The next two rules scan identifiers and filenames.
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* This is achieved by using the priority ruling
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* of the scanner where a '.' is valid in a filename
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* and *only* in a filename. In this case, the second
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* rule will be reduced because it is longer.
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*/
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[A-Za-z_0-9]+ {
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struct keyword *tok = iskeyword(yytext);
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if(tok)
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{
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if(wanted_id && !tok->alwayskw)
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{
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yylval.str = make_string(yytext);
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return tIDENT;
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}
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else
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return tok->token;
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}
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else
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{
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yylval.str = make_string(yytext);
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return tIDENT;
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}
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}
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[A-Za-z_0-9./\\]+ yylval.str = make_string(yytext); return tFILENAME;
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/*
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* Wide string scanning
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*/
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L\" {
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yy_push_state(yylstr);
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wbufidx = 0;
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if(!win32)
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yywarning("16bit resource contains unicode strings\n");
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}
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<yylstr>\"{ws}+ |
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<yylstr>\" {
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yy_pop_state();
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yylval.str = get_buffered_wstring();
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return tSTRING;
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}
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<yylstr>\\[0-7]{1,6} { /* octal escape sequence */
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int result;
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result = strtol(yytext+1, 0, 8);
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if ( result > 0xffff )
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yyerror("Character constant out of range");
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addwchar((short)result);
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}
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<yylstr>\\x[0-9a-fA-F]{4} { /* hex escape sequence */
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int result;
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result = strtol(yytext+2, 0, 16);
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addwchar((short)result);
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}
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<yylstr>\\x[0-9a-fA-F]{1,3} { yyerror("Invalid hex escape sequence '%s'", yytext); }
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<yylstr>\\[0-9]+ yyerror("Bad escape sequence");
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<yylstr>\\a addwchar('\a');
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<yylstr>\\b addwchar('\b');
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<yylstr>\\f addwchar('\f');
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<yylstr>\\n addwchar('\n');
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<yylstr>\\r addwchar('\r');
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<yylstr>\\t addwchar('\t');
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<yylstr>\\v addwchar('\v');
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<yylstr>\\(\n|.) addwchar(yytext[1]);
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<yylstr>\\\r\n addwchar(yytext[2]);
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<yylstr>\"\" addcchar('\"'); /* "bla""bla" -> "bla\"bla" */
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<yylstr>\\\"\" addcchar('\"'); /* "bla\""bla" -> "bla\"bla" */
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<yylstr>\"{ws}+\" ; /* "bla" "bla" -> "blabla" */
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<yylstr>[^\\\n\"]+ {
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char *yptr = yytext;
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while(*yptr) /* FIXME: codepage translation */
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addwchar(*yptr++ & 0xff);
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}
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<yylstr>\n yyerror("Unterminated string");
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/*
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* Normal string scanning
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*/
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\" yy_push_state(yystr); cbufidx = 0;
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<yystr>\"{ws}+ |
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<yystr>\" {
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yy_pop_state();
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yylval.str = get_buffered_cstring();
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return tSTRING;
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}
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<yystr>\\[0-7]{1,3} { /* octal escape sequence */
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int result;
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result = strtol(yytext+1, 0, 8);
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if ( result > 0xff )
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yyerror("Character constant out of range");
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addcchar((char)result);
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}
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<yystr>\\x[0-9a-fA-F]{2} { /* hex escape sequence */
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int result;
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result = strtol(yytext+2, 0, 16);
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addcchar((char)result);
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}
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<yystr>\\x[0-9a-fA-F] { yyerror("Invalid hex escape sequence '%s'", yytext); }
|
|
|
|
<yystr>\\[0-9]+ yyerror("Bad escape secuence");
|
|
<yystr>\\a addcchar('\a');
|
|
<yystr>\\b addcchar('\b');
|
|
<yystr>\\f addcchar('\f');
|
|
<yystr>\\n addcchar('\n');
|
|
<yystr>\\r addcchar('\r');
|
|
<yystr>\\t addcchar('\t');
|
|
<yystr>\\v addcchar('\v');
|
|
<yystr>\\(\n|.) addcchar(yytext[1]);
|
|
<yystr>\\\r\n addcchar(yytext[2]);
|
|
<yystr>[^\\\n\"]+ {
|
|
char *yptr = yytext;
|
|
while(*yptr)
|
|
addcchar(*yptr++);
|
|
}
|
|
<yystr>\"\" addcchar('\"'); /* "bla""bla" -> "bla\"bla" */
|
|
<yystr>\\\"\" addcchar('\"'); /* "bla\""bla" -> "bla\"bla" */
|
|
<yystr>\"{ws}+\" ; /* "bla" "bla" -> "blabla" */
|
|
<yystr>\n yyerror("Unterminated string");
|
|
|
|
/*
|
|
* Raw data scanning
|
|
*/
|
|
\' yy_push_state(yyrcd); cbufidx = 0;
|
|
<yyrcd>\' {
|
|
yy_pop_state();
|
|
yylval.raw = new_raw_data();
|
|
yylval.raw->size = cbufidx;
|
|
yylval.raw->data = xmalloc(yylval.raw->size);
|
|
memcpy(yylval.raw->data, cbuffer, yylval.raw->size);
|
|
return tRAWDATA;
|
|
}
|
|
<yyrcd>[0-9a-fA-F]{2} {
|
|
int result;
|
|
result = strtol(yytext, 0, 16);
|
|
addcchar((char)result);
|
|
}
|
|
<yyrcd>{ws}+ ; /* Ignore space */
|
|
<yyrcd>\n line_number++; char_number = 1;
|
|
<yyrcd>. yyerror("Malformed data-line");
|
|
|
|
/*
|
|
* Comment stripping
|
|
* Should never occur after preprocessing
|
|
*/
|
|
<INITIAL,pp_stripp,pp_strips>"/*" {
|
|
yy_push_state(comment);
|
|
save_wanted_id = wanted_id;
|
|
if(!no_preprocess)
|
|
yywarning("Found comments after preprocessing, please report");
|
|
}
|
|
<comment>[^*\n]* ;
|
|
<comment>"*"+[^*/\n]* ;
|
|
<comment>\n line_number++; char_number = 1;
|
|
<comment>"*"+"/" yy_pop_state(); want_id = save_wanted_id;
|
|
|
|
;[^\n]* want_id = wanted_id; /* not really comment, but left-over c-junk */
|
|
"//"[^\n]* want_id = wanted_id; if(!no_preprocess) yywarning("Found comments after preprocessing, please report");
|
|
|
|
\n {
|
|
want_id = wanted_id;
|
|
line_number++;
|
|
char_number = 1;
|
|
if(want_nl)
|
|
{
|
|
want_nl = 0;
|
|
return tNL;
|
|
}
|
|
}
|
|
{ws}+ want_id = wanted_id; /* Eat whitespace */
|
|
|
|
<INITIAL>. return yytext[0];
|
|
|
|
<<EOF>> {
|
|
if(YY_START == pp_strips || YY_START == pp_stripe || YY_START == pp_stripp || YY_START == pp_stripp_final)
|
|
yyerror("Unexpected end of file during c-junk scanning (started at %d)", cjunk_tagline);
|
|
else
|
|
yyterminate();
|
|
}
|
|
|
|
<*>.|\n {
|
|
/* Catch all rule to find any unmatched text */
|
|
if(*yytext == '\n')
|
|
{
|
|
line_number++;
|
|
char_number = 1;
|
|
}
|
|
yywarning("Unmatched text '%c' (0x%02x) YY_START=%d stripslevel=%d",
|
|
isprint(*yytext & 0xff) ? *yytext : '.', *yytext, YY_START,stripslevel);
|
|
}
|
|
|
|
%%
|
|
|
|
#ifndef yywrap
|
|
int yywrap(void)
|
|
{
|
|
#if 0
|
|
if(bufferstackidx > 0)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
/* These dup functions copy the enclosed '\0' from
|
|
* the resource string.
|
|
*/
|
|
static void addcchar(char c)
|
|
{
|
|
if(cbufidx >= cbufalloc)
|
|
{
|
|
cbufalloc += 1024;
|
|
cbuffer = xrealloc(cbuffer, cbufalloc * sizeof(cbuffer[0]));
|
|
if(cbufalloc > 65536)
|
|
yywarning("Reallocating string buffer larger than 64kB");
|
|
}
|
|
cbuffer[cbufidx++] = c;
|
|
}
|
|
|
|
static void addwchar(short s)
|
|
{
|
|
if(wbufidx >= wbufalloc)
|
|
{
|
|
wbufalloc += 1024;
|
|
wbuffer = xrealloc(wbuffer, wbufalloc * sizeof(wbuffer[0]));
|
|
if(wbufalloc > 65536)
|
|
yywarning("Reallocating wide string buffer larger than 64kB");
|
|
}
|
|
|
|
/*
|
|
* BS 08-Aug-1999 FIXME: The '& 0xff' is probably a bug, but I have
|
|
* not experienced it yet and I seem to remember that this was for
|
|
* a reason. But, as so many things you tend to forget why.
|
|
* I guess that there were problems due to the sign extension of
|
|
* shorts WRT chars (e.g. 0x80 becomes 0xff80 instead of 0x0080).
|
|
* This should then be fixed in the lexer calling the function.
|
|
*/
|
|
wbuffer[wbufidx++] = (short)(s & 0xff);
|
|
}
|
|
|
|
static string_t *get_buffered_cstring(void)
|
|
{
|
|
string_t *str = new_string();
|
|
str->size = cbufidx;
|
|
str->type = str_char;
|
|
str->str.cstr = (char *)xmalloc(cbufidx+1);
|
|
memcpy(str->str.cstr, cbuffer, cbufidx);
|
|
str->str.cstr[cbufidx] = '\0';
|
|
return str;
|
|
}
|
|
|
|
static string_t *get_buffered_wstring(void)
|
|
{
|
|
string_t *str = new_string();
|
|
str->size = wbufidx;
|
|
str->type = str_unicode;
|
|
str->str.wstr = (short *)xmalloc(2*(wbufidx+1));
|
|
memcpy(str->str.wstr, wbuffer, wbufidx);
|
|
str->str.wstr[wbufidx] = 0;
|
|
return str;
|
|
}
|
|
|
|
static string_t *make_string(char *s)
|
|
{
|
|
string_t *str = new_string();
|
|
str->size = strlen(s);
|
|
str->type = str_char;
|
|
str->str.cstr = (char *)xmalloc(str->size+1);
|
|
memcpy(str->str.cstr, s, str->size+1);
|
|
return str;
|
|
}
|