%{ /* rclex.l -- lexer for Windows rc files parser */
/* Copyright 1997, 1998, 1999, 2001, 2002 Free Software Foundation, Inc.
Written by Ian Lance Taylor, Cygnus Support.
This file is part of GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* This is a lex input file which generates a lexer used by the
Windows rc file parser. It basically just recognized a bunch of
keywords. */
#include "bfd.h"
#include "bucomm.h"
#include "libiberty.h"
#include "safe-ctype.h"
#include "windres.h"
#include "rcparse.h"
#include <assert.h>
/* Whether we are in rcdata mode, in which we returns the lengths of
strings. */
static int rcdata_mode;
/* Whether we are supressing lines from cpp (including windows.h or
headers from your C sources may bring in externs and typedefs).
When active, we return IGNORED_TOKEN, which lets us ignore these
outside of resource constructs. Thus, it isn't required to protect
all the non-preprocessor lines in your header files with #ifdef
RC_INVOKED. It also means your RC file can't include other RC
files if they're named "*.h". Sorry. Name them *.rch or whatever. */
static int suppress_cpp_data;
#define MAYBE_RETURN(x) return suppress_cpp_data ? IGNORED_TOKEN : (x)
/* The first filename we detect in the cpp output. We use this to
tell included files from the original file. */
static char *initial_fn;
/* List of allocated strings. */
struct alloc_string
{
struct alloc_string *next;
char *s;
};
static struct alloc_string *strings;
/* Local functions. */
static void cpp_line PARAMS ((const char *));
static char *handle_quotes PARAMS ((const char *, unsigned long *));
static char *get_string PARAMS ((int));
%}
%%
"BEGIN" { MAYBE_RETURN (BEG); }
"{" { MAYBE_RETURN (BEG); }
"END" { MAYBE_RETURN (END); }
"}" { MAYBE_RETURN (END); }
"ACCELERATORS" { MAYBE_RETURN (ACCELERATORS); }
"VIRTKEY" { MAYBE_RETURN (VIRTKEY); }
"ASCII" { MAYBE_RETURN (ASCII); }
"NOINVERT" { MAYBE_RETURN (NOINVERT); }
"SHIFT" { MAYBE_RETURN (SHIFT); }
"CONTROL" { MAYBE_RETURN (CONTROL); }
"ALT" { MAYBE_RETURN (ALT); }
"BITMAP" { MAYBE_RETURN (BITMAP); }
"CURSOR" { MAYBE_RETURN (CURSOR); }
"DIALOG" { MAYBE_RETURN (DIALOG); }
"DIALOGEX" { MAYBE_RETURN (DIALOGEX); }
"EXSTYLE" { MAYBE_RETURN (EXSTYLE); }
"CAPTION" { MAYBE_RETURN (CAPTION); }
"CLASS" { MAYBE_RETURN (CLASS); }
"STYLE" { MAYBE_RETURN (STYLE); }
"AUTO3STATE" { MAYBE_RETURN (AUTO3STATE); }
"AUTOCHECKBOX" { MAYBE_RETURN (AUTOCHECKBOX); }
"AUTORADIOBUTTON" { MAYBE_RETURN (AUTORADIOBUTTON); }
"CHECKBOX" { MAYBE_RETURN (CHECKBOX); }
"COMBOBOX" { MAYBE_RETURN (COMBOBOX); }
"CTEXT" { MAYBE_RETURN (CTEXT); }
"DEFPUSHBUTTON" { MAYBE_RETURN (DEFPUSHBUTTON); }
"EDITTEXT" { MAYBE_RETURN (EDITTEXT); }
"GROUPBOX" { MAYBE_RETURN (GROUPBOX); }
"LISTBOX" { MAYBE_RETURN (LISTBOX); }
"LTEXT" { MAYBE_RETURN (LTEXT); }
"PUSHBOX" { MAYBE_RETURN (PUSHBOX); }
"PUSHBUTTON" { MAYBE_RETURN (PUSHBUTTON); }
"RADIOBUTTON" { MAYBE_RETURN (RADIOBUTTON); }
"RTEXT" { MAYBE_RETURN (RTEXT); }
"SCROLLBAR" { MAYBE_RETURN (SCROLLBAR); }
"STATE3" { MAYBE_RETURN (STATE3); }
"USERBUTTON" { MAYBE_RETURN (USERBUTTON); }
"BEDIT" { MAYBE_RETURN (BEDIT); }
"HEDIT" { MAYBE_RETURN (HEDIT); }
"IEDIT" { MAYBE_RETURN (IEDIT); }
"FONT" { MAYBE_RETURN (FONT); }
"ICON" { MAYBE_RETURN (ICON); }
"LANGUAGE" { MAYBE_RETURN (LANGUAGE); }
"CHARACTERISTICS" { MAYBE_RETURN (CHARACTERISTICS); }
"VERSION" { MAYBE_RETURN (VERSIONK); }
"MENU" { MAYBE_RETURN (MENU); }
"MENUEX" { MAYBE_RETURN (MENUEX); }
"MENUITEM" { MAYBE_RETURN (MENUITEM); }
"SEPARATOR" { MAYBE_RETURN (SEPARATOR); }
"POPUP" { MAYBE_RETURN (POPUP); }
"CHECKED" { MAYBE_RETURN (CHECKED); }
"GRAYED" { MAYBE_RETURN (GRAYED); }
"HELP" { MAYBE_RETURN (HELP); }
"INACTIVE" { MAYBE_RETURN (INACTIVE); }
"MENUBARBREAK" { MAYBE_RETURN (MENUBARBREAK); }
"MENUBREAK" { MAYBE_RETURN (MENUBREAK); }
"MESSAGETABLE" { MAYBE_RETURN (MESSAGETABLE); }
"RCDATA" { MAYBE_RETURN (RCDATA); }
"STRINGTABLE" { MAYBE_RETURN (STRINGTABLE); }
"VERSIONINFO" { MAYBE_RETURN (VERSIONINFO); }
"FILEVERSION" { MAYBE_RETURN (FILEVERSION); }
"PRODUCTVERSION" { MAYBE_RETURN (PRODUCTVERSION); }
"FILEFLAGSMASK" { MAYBE_RETURN (FILEFLAGSMASK); }
"FILEFLAGS" { MAYBE_RETURN (FILEFLAGS); }
"FILEOS" { MAYBE_RETURN (FILEOS); }
"FILETYPE" { MAYBE_RETURN (FILETYPE); }
"FILESUBTYPE" { MAYBE_RETURN (FILESUBTYPE); }
"VALUE" { MAYBE_RETURN (VALUE); }
"MOVEABLE" { MAYBE_RETURN (MOVEABLE); }
"FIXED" { MAYBE_RETURN (FIXED); }
"PURE" { MAYBE_RETURN (PURE); }
"IMPURE" { MAYBE_RETURN (IMPURE); }
"PRELOAD" { MAYBE_RETURN (PRELOAD); }
"LOADONCALL" { MAYBE_RETURN (LOADONCALL); }
"DISCARDABLE" { MAYBE_RETURN (DISCARDABLE); }
"NOT" { MAYBE_RETURN (NOT); }
"BLOCK"[ \t\n]*"\""[^\#\n]*"\"" {
char *s, *send;
/* This is a hack to let us parse version
information easily. */
s = strchr (yytext, '"');
++s;
send = strchr (s, '"');
if (strncmp (s, "StringFileInfo",
sizeof "StringFileInfo" - 1) == 0
&& s + sizeof "StringFileInfo" - 1 == send)
MAYBE_RETURN (BLOCKSTRINGFILEINFO);
else if (strncmp (s, "VarFileInfo",
sizeof "VarFileInfo" - 1) == 0
&& s + sizeof "VarFileInfo" - 1 == send)
MAYBE_RETURN (BLOCKVARFILEINFO);
else
{
char *r;
r = get_string (send - s + 1);
strncpy (r, s, send - s);
r[send - s] = '\0';
yylval.s = r;
MAYBE_RETURN (BLOCK);
}
}
"#"[^\n]* {
cpp_line (yytext);
}
[0-9][x0-9A-Fa-f]*L {
yylval.i.val = strtoul (yytext, 0, 0);
yylval.i.dword = 1;
MAYBE_RETURN (NUMBER);
}
[0-9][x0-9A-Fa-f]* {
yylval.i.val = strtoul (yytext, 0, 0);
yylval.i.dword = 0;
MAYBE_RETURN (NUMBER);
}
("\""[^\"\n]*"\""[ \t]*)+ {
char *s;
unsigned long length;
s = handle_quotes (yytext, &length);
if (! rcdata_mode)
{
yylval.s = s;
MAYBE_RETURN (QUOTEDSTRING);
}
else
{
yylval.ss.length = length;
yylval.ss.s = s;
MAYBE_RETURN (SIZEDSTRING);
}
}
[A-Za-z][^ ,\t\r\n]* {
char *s;
/* I rejected comma in a string in order to
handle VIRTKEY, CONTROL in an accelerator
resource. This means that an unquoted
file name can not contain a comma. I
don't know what rc permits. */
s = get_string (strlen (yytext) + 1);
strcpy (s, yytext);
yylval.s = s;
MAYBE_RETURN (STRING);
}
[\n] { ++rc_lineno; }
[ \t\r]+ { /* ignore whitespace */ }
. { MAYBE_RETURN (*yytext); }
%%
#ifndef yywrap
/* This is needed for some versions of lex. */
int yywrap ()
{
return 1;
}
#endif
/* Handle a C preprocessor line. */
static void
cpp_line (s)
const char *s;
{
int line;
char *send, *fn;
++s;
while (ISSPACE (*s))
++s;
line = strtol (s, &send, 0);
if (*send != '\0' && ! ISSPACE (*send))
return;
/* Subtract 1 because we are about to count the newline. */
rc_lineno = line - 1;
s = send;
while (ISSPACE (*s))
++s;
if (*s != '"')
return;
++s;
send = strchr (s, '"');
if (send == NULL)
return;
fn = (char *) xmalloc (send - s + 1);
strncpy (fn, s, send - s);
fn[send - s] = '\0';
free (rc_filename);
rc_filename = fn;
if (!initial_fn)
{
initial_fn = xmalloc (strlen (fn) + 1);
strcpy (initial_fn, fn);
}
/* Allow the initial file, regardless of name. Suppress all other
files if they end in ".h" (this allows included "*.rc"). */
if (strcmp (initial_fn, fn) == 0
|| strcmp (fn + strlen (fn) - 2, ".h") != 0)
suppress_cpp_data = 0;
else
suppress_cpp_data = 1;
}
/* Handle a quoted string. The quotes are stripped. A pair of quotes
in a string are turned into a single quote. Adjacent strings are
merged separated by whitespace are merged, as in C. */
static char *
handle_quotes (input, len)
const char *input;
unsigned long *len;
{
char *ret, *s;
const char *t;
int ch;
ret = get_string (strlen (input) + 1);
s = ret;
t = input;
if (*t == '"')
++t;
while (*t != '\0')
{
if (*t == '\\')
{
++t;
switch (*t)
{
case '\0':
rcparse_warning ("backslash at end of string");
break;
case '\"':
rcparse_warning ("use \"\" to put \" in a string");
break;
case 'a':
*s++ = ESCAPE_B; /* Strange, but true... */
++t;
break;
case 'b':
*s++ = ESCAPE_B;
++t;
break;
case 'f':
*s++ = ESCAPE_F;
++t;
break;
case 'n':
*s++ = ESCAPE_N;
++t;
break;
case 'r':
*s++ = ESCAPE_R;
++t;
break;
case 't':
*s++ = ESCAPE_T;
++t;
break;
case 'v':
*s++ = ESCAPE_V;
++t;
break;
case '\\':
*s++ = *t++;
break;
case '0': case '1': case '2': case '3':
case '4': case '5': case '6': case '7':
ch = *t - '0';
++t;
if (*t >= '0' && *t <= '7')
{
ch = (ch << 3) | (*t - '0');
++t;
if (*t >= '0' && *t <= '7')
{
ch = (ch << 3) | (*t - '0');
++t;
}
}
*s++ = ch;
break;
case 'x':
++t;
ch = 0;
while (1)
{
if (*t >= '0' && *t <= '9')
ch = (ch << 4) | (*t - '0');
else if (*t >= 'a' && *t <= 'f')
ch = (ch << 4) | (*t - 'a' + 10);
else if (*t >= 'A' && *t <= 'F')
ch = (ch << 4) | (*t - 'A' + 10);
else
break;
++t;
}
*s++ = ch;
break;
default:
rcparse_warning ("unrecognized escape sequence");
*s++ = '\\';
*s++ = *t++;
break;
}
}
else if (*t != '"')
*s++ = *t++;
else if (t[1] == '\0')
break;
else if (t[1] == '"')
{
*s++ = '"';
t += 2;
}
else
{
++t;
assert (ISSPACE (*t));
while (ISSPACE (*t))
++t;
if (*t == '\0')
break;
assert (*t == '"');
++t;
}
}
*s = '\0';
*len = s - ret;
return ret;
}
/* Allocate a string of a given length. */
static char *
get_string (len)
int len;
{
struct alloc_string *as;
as = (struct alloc_string *) xmalloc (sizeof *as);
as->s = xmalloc (len);
as->next = strings;
strings = as;
return as->s;
}
/* Discard all the strings we have allocated. The parser calls this
when it no longer needs them. */
void
rcparse_discard_strings ()
{
struct alloc_string *as;
as = strings;
while (as != NULL)
{
struct alloc_string *n;
free (as->s);
n = as->next;
free (as);
as = n;
}
strings = NULL;
}
/* Enter rcdata mode. */
void
rcparse_rcdata ()
{
rcdata_mode = 1;
}
/* Go back to normal mode from rcdata mode. */
void
rcparse_normal ()
{
rcdata_mode = 0;
}