1 /* fix-header.c - Make C header file suitable for C++.
2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19 /* This program massages a system include file (such as stdio.h),
20 into a form that is compatible with GNU C and GNU C++.
22 * extern "C" { ... } braces are added (inside #ifndef __cplusplus),
23 if they seem to be needed. These prevent C++ compilers from name
24 mangling the functions inside the braces.
26 * If an old-style incomplete function declaration is seen (without
27 an argument list), and it is a "standard" function listed in
28 the file sys-protos.h (and with a non-empty argument list), then
29 the declaration is converted to a complete prototype by replacing
30 the empty parameter list with the argument list from sys-protos.h.
32 * The program can be given a list of (names of) required standard
33 functions (such as fclose for stdio.h). If a required function
34 is not seen in the input, then a prototype for it will be
35 written to the output.
37 * If all of the non-comment code of the original file is protected
38 against multiple inclusion:
41 <body of include file>
43 then extra matter added to the include file is placed inside the <body>.
45 * If the input file is OK (nothing needs to be done);
46 the output file is not written (nor removed if it exists).
48 There are also some special actions that are done for certain
49 well-known standard include files:
51 * If argv[1] is "sys/stat.h", the Posix.1 macros
52 S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if
53 they were missing, and the corresponding "traditional" S_IFxxx
56 * If argv[1] is "errno.h", errno is declared if it was missing.
58 * TODO: The input file should be read complete into memory, because:
59 a) it needs to be scanned twice anyway, and
60 b) it would be nice to allow update in place.
63 fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
65 * FOO.H is the relative file name of the include file,
66 as it would be #include'd by a C file. (E.g. stdio.h)
67 * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h)
68 * OUTFILE.H is the full pathname for where to write the output file,
69 if anything needs to be done. (e.g. ./include/stdio.h)
70 * OPTIONS are such as you would pass to cpp.
72 Written by Per Bothner <bothner@cygnus.com>, July 1993. */
80 static void v_fatal
PARAMS ((const char *, va_list)) ATTRIBUTE_PRINTF (1,0) ATTRIBUTE_NORETURN
;
81 static void fatal
PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN
;
86 int partial_count
= 0;
89 /* We no longer need to add extern "C", because cpp implicitly
90 forces the standard include files to be treated as C. */
91 /*#define ADD_MISSING_EXTERN_C 1 */
93 #if ADD_MISSING_EXTERN_C
94 int missing_extern_C_count
= 0;
97 #include "xsys-protos.h"
99 #ifdef FIXPROTO_IGNORE_LIST
100 /* This is a currently unused feature. */
102 /* List of files and directories to ignore.
103 A directory name (ending in '/') means ignore anything in that
104 directory. (It might be more efficient to do directory pruning
105 earlier in fixproto, but this is simpler and easier to customize.) */
107 static char *files_to_ignore
[] = {
117 static const char *cur_file
;
119 /* Certain standard files get extra treatment */
142 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
143 by an empty name (i.e. by "\0\0"). */
145 typedef const char *namelist
;
147 /* The following macros provide the bits for symbol_flags. */
148 typedef int symbol_flags
;
150 /* Used to mark names defined in the ANSI/ISO C standard. */
151 #define ANSI_SYMBOL 1
153 /* We no longer massage include files for POSIX or XOPEN symbols,
154 as there are now several versions of the POSIX and XOPEN standards,
155 and it would be a maintenance nightmare for us to track them all.
156 Better to be compatible with the system include files. */
157 /*#define ADD_MISSING_POSIX 1 */
158 /*#define ADD_MISSING_XOPEN 1 */
160 #if ADD_MISSING_POSIX
161 /* Used to mark names defined in the Posix.1 or Posix.2 standard. */
162 #define POSIX1_SYMBOL 2
163 #define POSIX2_SYMBOL 4
165 #define POSIX1_SYMBOL 0
166 #define POSIX2_SYMBOL 0
169 #if ADD_MISSING_XOPEN
170 /* Used to mark names defined in X/Open Portability Guide. */
171 #define XOPEN_SYMBOL 8
172 /* Used to mark names defined in X/Open UNIX Extensions. */
173 #define XOPEN_EXTENDED_SYMBOL 16
175 #define XOPEN_SYMBOL 0
176 #define XOPEN_EXTENDED_SYMBOL 0
179 /* Used to indicate names that are not functions */
180 #define MACRO_SYMBOL 512
187 #define SYMBOL_TABLE_SIZE 10
188 struct symbol_list symbol_table
[SYMBOL_TABLE_SIZE
];
189 int cur_symbol_table_size
;
191 static void add_symbols
PARAMS ((symbol_flags
, namelist
));
192 static struct fn_decl
*lookup_std_proto
PARAMS ((const char *, int));
193 static void write_lbrac
PARAMS ((void));
194 static void recognized_macro
PARAMS ((const char *));
195 static void check_macro_names
PARAMS ((cpp_reader
*, namelist
));
196 static void read_scan_file
PARAMS ((char *, int, char **));
197 static void write_rbrac
PARAMS ((void));
198 static int inf_skip_spaces
PARAMS ((int));
199 static int inf_read_upto
PARAMS ((sstring
*, int));
200 static int inf_scan_ident
PARAMS ((sstring
*, int));
201 static int check_protection
PARAMS ((int *, int *));
202 static void cb_file_change
PARAMS ((cpp_reader
*, const struct line_map
*));
205 add_symbols (flags
, names
)
209 symbol_table
[cur_symbol_table_size
].flags
= flags
;
210 symbol_table
[cur_symbol_table_size
].names
= names
;
211 cur_symbol_table_size
++;
212 if (cur_symbol_table_size
>= SYMBOL_TABLE_SIZE
)
213 fatal ("too many calls to add_symbols");
214 symbol_table
[cur_symbol_table_size
].names
= NULL
; /* Termination. */
217 struct std_include_entry
{
223 const char NONE
[] = ""; /* The empty namelist. */
225 /* Special name to indicate a continuation line in std_include_table. */
226 const char CONTINUED
[] = "";
228 struct std_include_entry
*include_entry
;
230 struct std_include_entry std_include_table
[] = {
231 { "ctype.h", ANSI_SYMBOL
,
232 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
233 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
235 { "dirent.h", POSIX1_SYMBOL
, "closedir\0opendir\0readdir\0rewinddir\0"},
237 { "errno.h", ANSI_SYMBOL
|MACRO_SYMBOL
, "errno\0" },
239 /* ANSI_SYMBOL is wrong, but ... */
240 { "curses.h", ANSI_SYMBOL
, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
241 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
242 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
243 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
244 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
246 { "fcntl.h", POSIX1_SYMBOL
, "creat\0fcntl\0open\0" },
248 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
249 { "grp.h", POSIX1_SYMBOL
, "getgrgid\0getgrnam\0" },
251 /*{ "limit.h", ... provided by gcc }, */
253 { "locale.h", ANSI_SYMBOL
, "localeconv\0setlocale\0" },
255 { "math.h", ANSI_SYMBOL
,
256 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
257 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
260 { CONTINUED
, ANSI_SYMBOL
|MACRO_SYMBOL
, "HUGE_VAL\0" },
262 { "pwd.h", POSIX1_SYMBOL
, "getpwnam\0getpwuid\0" },
264 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
265 { "setjmp.h", ANSI_SYMBOL
, "longjmp\0setjmp\0" },
267 /* Left out signal() - its prototype is too complex for us!
268 Also left out "sigaction sigaddset sigdelset sigemptyset
269 sigfillset sigismember sigpending sigprocmask sigsuspend"
270 because these need sigset_t or struct sigaction.
271 Most systems that provide them will also declare them. */
272 { "signal.h", ANSI_SYMBOL
, "kill\0raise\0" },
274 { "stdio.h", ANSI_SYMBOL
,
275 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
276 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
277 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
278 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
279 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
281 { CONTINUED
, POSIX1_SYMBOL
, "fdopen\0fileno\0" },
282 { CONTINUED
, POSIX2_SYMBOL
, "pclose\0popen\0" }, /* I think ... */
283 /* Should perhaps also handle NULL, EOF, ... ? */
285 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
286 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
287 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
288 Should perhaps also add NULL */
289 { "stdlib.h", ANSI_SYMBOL
,
290 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
291 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
292 srand\0strtod\0strtol\0strtoul\0system\0" },
293 { CONTINUED
, ANSI_SYMBOL
|MACRO_SYMBOL
, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
295 { "string.h", ANSI_SYMBOL
, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
296 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
297 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
298 strtok\0strxfrm\0" },
299 /* Should perhaps also add NULL and size_t */
301 { "strings.h", XOPEN_EXTENDED_SYMBOL
,
302 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
304 { "strops.h", XOPEN_EXTENDED_SYMBOL
, "ioctl\0" },
306 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
307 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
308 and many systems do have <sys/ioctl.h> but not <strops.h>. */
309 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL
, "ioctl\0" },
311 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL
, "socket\0" },
313 { "sys/stat.h", POSIX1_SYMBOL
,
314 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
315 { CONTINUED
, POSIX1_SYMBOL
|MACRO_SYMBOL
,
316 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
317 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
318 { CONTINUED
, XOPEN_EXTENDED_SYMBOL
, "fchmod\0" },
321 /* How do we handle fd_set? */
322 { "sys/time.h", XOPEN_EXTENDED_SYMBOL
, "select\0" },
323 { "sys/select.h", XOPEN_EXTENDED_SYMBOL
/* fake */, "select\0" },
326 { "sys/times.h", POSIX1_SYMBOL
, "times\0" },
327 /* "sys/types.h" add types (not in old g++-include) */
329 { "sys/utsname.h", POSIX1_SYMBOL
, "uname\0" },
331 { "sys/wait.h", POSIX1_SYMBOL
, "wait\0waitpid\0" },
332 { CONTINUED
, POSIX1_SYMBOL
|MACRO_SYMBOL
,
333 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
334 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
336 { "tar.h", POSIX1_SYMBOL
, NONE
},
338 { "termios.h", POSIX1_SYMBOL
,
339 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
341 { "time.h", ANSI_SYMBOL
,
342 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
344 { "unistd.h", POSIX1_SYMBOL
,
345 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
346 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
347 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
348 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
349 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
350 ttyname\0unlink\0write\0" },
351 { CONTINUED
, POSIX2_SYMBOL
, "getopt\0" },
352 { CONTINUED
, XOPEN_EXTENDED_SYMBOL
,
353 "lockf\0gethostid\0gethostname\0readlink\0symlink\0" },
355 { "utime.h", POSIX1_SYMBOL
, "utime\0" },
360 enum special_file special_file_handling
= no_special
;
362 /* They are set if the corresponding macro has been seen. */
363 /* The following are only used when handling sys/stat.h */
364 int seen_S_IFBLK
= 0, seen_S_ISBLK
= 0;
365 int seen_S_IFCHR
= 0, seen_S_ISCHR
= 0;
366 int seen_S_IFDIR
= 0, seen_S_ISDIR
= 0;
367 int seen_S_IFIFO
= 0, seen_S_ISFIFO
= 0;
368 int seen_S_IFLNK
= 0, seen_S_ISLNK
= 0;
369 int seen_S_IFREG
= 0, seen_S_ISREG
= 0;
370 /* The following are only used when handling errno.h */
372 /* The following are only used when handling stdlib.h */
373 int seen_EXIT_FAILURE
= 0, seen_EXIT_SUCCESS
= 0;
375 #define obstack_chunk_alloc xmalloc
376 #define obstack_chunk_free free
377 struct obstack scan_file_obstack
;
379 /* NOTE: If you edit this, also edit gen-protos.c !! */
381 static struct fn_decl
*
382 lookup_std_proto (name
, name_length
)
386 int i
= hashstr (name
, name_length
) % HASH_SIZE
;
391 if (hash_tab
[i
] == 0)
393 fn
= &std_protos
[hash_tab
[i
]];
394 if ((int) strlen (fn
->fname
) == name_length
395 && strncmp (fn
->fname
, name
, name_length
) == 0)
397 i
= (i
+1) % HASH_SIZE
;
404 int inc_filename_length
;
405 const char *progname
= "fix-header";
409 int lbrac_line
, rbrac_line
;
411 int required_unseen_count
= 0;
412 int required_other
= 0;
418 #if ADD_MISSING_EXTERN_C
419 if (missing_extern_C_count
+ required_unseen_count
> 0)
420 fprintf (outf
, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
425 fprintf (outf
, "#ifndef _PARAMS\n");
426 fprintf (outf
, "#if defined(__STDC__) || defined(__cplusplus)\n");
427 fprintf (outf
, "#define _PARAMS(ARGS) ARGS\n");
428 fprintf (outf
, "#else\n");
429 fprintf (outf
, "#define _PARAMS(ARGS) ()\n");
430 fprintf (outf
, "#endif\n#endif /* _PARAMS */\n");
436 struct partial_proto
*next
;
441 struct partial_proto
*partial_proto_list
= NULL
;
443 struct partial_proto required_dummy_proto
, seen_dummy_proto
;
444 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
445 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
446 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
447 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
450 recognized_macro (fname
)
453 /* The original include file defines fname as a macro. */
454 struct fn_decl
*fn
= lookup_std_proto (fname
, strlen (fname
));
456 /* Since fname is a macro, don't require a prototype for it. */
460 required_unseen_count
--;
464 switch (special_file_handling
)
467 if (strcmp (fname
, "errno") == 0 && !seen_errno
)
468 seen_errno
= 1, required_other
--;
471 if (strcmp (fname
, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE
)
472 seen_EXIT_FAILURE
= 1, required_other
--;
473 if (strcmp (fname
, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS
)
474 seen_EXIT_SUCCESS
= 1, required_other
--;
477 if (fname
[0] == 'S' && fname
[1] == '_')
479 if (strcmp (fname
, "S_IFBLK") == 0) seen_S_IFBLK
++;
480 else if (strcmp (fname
, "S_ISBLK") == 0) seen_S_ISBLK
++;
481 else if (strcmp (fname
, "S_IFCHR") == 0) seen_S_IFCHR
++;
482 else if (strcmp (fname
, "S_ISCHR") == 0) seen_S_ISCHR
++;
483 else if (strcmp (fname
, "S_IFDIR") == 0) seen_S_IFDIR
++;
484 else if (strcmp (fname
, "S_ISDIR") == 0) seen_S_ISDIR
++;
485 else if (strcmp (fname
, "S_IFIFO") == 0) seen_S_IFIFO
++;
486 else if (strcmp (fname
, "S_ISFIFO") == 0) seen_S_ISFIFO
++;
487 else if (strcmp (fname
, "S_IFLNK") == 0) seen_S_IFLNK
++;
488 else if (strcmp (fname
, "S_ISLNK") == 0) seen_S_ISLNK
++;
489 else if (strcmp (fname
, "S_IFREG") == 0) seen_S_IFREG
++;
490 else if (strcmp (fname
, "S_ISREG") == 0) seen_S_ISREG
++;
500 recognized_extern (name
)
501 const cpp_token
*name
;
503 switch (special_file_handling
)
506 if (cpp_ideq (name
, "errno"))
507 seen_errno
= 1, required_other
--;
515 /* Called by scan_decls if it saw a function definition for a function
516 named FNAME. KIND is 'I' for an inline function; 'F' if a normal
517 function declaration preceded by 'extern "C"' (or nested inside
518 'extern "C"' braces); or 'f' for other function declarations. */
521 recognized_function (fname
, line
, kind
, have_arg_list
)
522 const cpp_token
*fname
;
524 int kind
; /* One of 'f' 'F' or 'I' */
527 struct partial_proto
*partial
;
530 #if ADD_MISSING_EXTERN_C
532 missing_extern_C_count
++;
535 fn
= lookup_std_proto ((const char *) NODE_NAME (fname
->val
.node
),
536 NODE_LEN (fname
->val
.node
));
538 /* Remove the function from the list of required function. */
542 required_unseen_count
--;
546 /* If we have a full prototype, we're done. */
550 if (kind
== 'I') /* don't edit inline function */
553 /* If the partial prototype was included from some other file,
554 we don't need to patch it up (in this run). */
555 i
= strlen (cur_file
);
556 if (i
< inc_filename_length
557 || strcmp (inc_filename
, cur_file
+ (i
- inc_filename_length
)) != 0)
562 if (fn
->params
[0] == '\0')
565 /* We only have a partial function declaration,
566 so remember that we have to add a complete prototype. */
568 partial
= (struct partial_proto
*)
569 obstack_alloc (&scan_file_obstack
, sizeof (struct partial_proto
));
570 partial
->line_seen
= line
;
572 fn
->partial
= partial
;
573 partial
->next
= partial_proto_list
;
574 partial_proto_list
= partial
;
577 fprintf (stderr
, "(%s: %s non-prototype function declaration.)\n",
578 inc_filename
, fn
->fname
);
582 /* For any name in NAMES that is defined as a macro,
583 call recognized_macro on it. */
586 check_macro_names (pfile
, names
)
593 len
= strlen (names
);
594 if (cpp_defined (pfile
, (const unsigned char *)names
, len
))
595 recognized_macro (names
);
601 cb_file_change (pfile
, map
)
602 cpp_reader
*pfile ATTRIBUTE_UNUSED
;
603 const struct line_map
*map
;
605 /* Just keep track of current file name. */
606 cur_file
= map
->to_file
;
610 read_scan_file (in_fname
, argc
, argv
)
617 cpp_options
*options
;
620 register struct symbol_list
*cur_symbols
;
622 obstack_init (&scan_file_obstack
);
624 scan_in
= cpp_create_reader (NULL
, CLK_GNUC89
);
625 cb
= cpp_get_callbacks (scan_in
);
626 cb
->file_change
= cb_file_change
;
628 /* We are going to be scanning a header file out of its proper context,
629 so ignore warnings and errors. */
630 options
= cpp_get_options (scan_in
);
631 options
->inhibit_warnings
= 1;
632 options
->inhibit_errors
= 1;
634 i
= cpp_handle_options (scan_in
, argc
, argv
);
635 if (i
< argc
&& ! CPP_FATAL_ERRORS (scan_in
))
636 cpp_fatal (scan_in
, "Invalid option `%s'", argv
[i
]);
637 cpp_post_options (scan_in
);
638 if (CPP_FATAL_ERRORS (scan_in
))
639 exit (FATAL_EXIT_CODE
);
641 if (! cpp_start_read (scan_in
, in_fname
))
642 exit (FATAL_EXIT_CODE
);
644 /* We are scanning a system header, so mark it as such. */
645 cpp_make_system_header (scan_in
, 1, 0);
647 scan_decls (scan_in
, argc
, argv
);
648 for (cur_symbols
= &symbol_table
[0]; cur_symbols
->names
; cur_symbols
++)
649 check_macro_names (scan_in
, cur_symbols
->names
);
651 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
652 If so, those functions are also required. */
653 if (special_file_handling
== stdio_h
654 && (fn
= lookup_std_proto ("_filbuf", 7)) != NULL
)
656 static const unsigned char getchar_call
[] = "getchar();";
659 /* Scan the macro expansion of "getchar();". */
660 cpp_push_buffer (scan_in
, getchar_call
, sizeof(getchar_call
) - 1,
661 /* from_stage3 */ true, 1);
666 cpp_get_token (scan_in
, &t
);
667 if (t
.type
== CPP_EOF
)
669 else if (cpp_ideq (&t
, "_filbuf"))
675 int need_filbuf
= !SEEN (fn
) && !REQUIRED (fn
);
676 struct fn_decl
*flsbuf_fn
= lookup_std_proto ("_flsbuf", 7);
678 = flsbuf_fn
&& !SEEN (flsbuf_fn
) && !REQUIRED (flsbuf_fn
);
680 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
681 if (need_filbuf
+ need_flsbuf
)
683 const char *new_list
;
687 SET_REQUIRED (flsbuf_fn
);
688 if (need_flsbuf
&& need_filbuf
)
689 new_list
= "_filbuf\0_flsbuf\0";
690 else if (need_flsbuf
)
691 new_list
= "_flsbuf\0";
692 else /* if (need_flsbuf) */
693 new_list
= "_filbuf\0";
694 add_symbols (ANSI_SYMBOL
, new_list
);
695 required_unseen_count
+= need_filbuf
+ need_flsbuf
;
700 if (required_unseen_count
+ partial_count
+ required_other
701 #if ADD_MISSING_EXTERN_C
702 + missing_extern_C_count
707 fprintf (stderr
, "%s: OK, nothing needs to be done.\n", inc_filename
);
708 exit (SUCCESS_EXIT_CODE
);
711 fprintf (stderr
, "%s: fixing %s\n", progname
, inc_filename
);
714 if (required_unseen_count
)
715 fprintf (stderr
, "%s: %d missing function declarations.\n",
716 inc_filename
, required_unseen_count
);
718 fprintf (stderr
, "%s: %d non-prototype function declarations.\n",
719 inc_filename
, partial_count
);
720 #if ADD_MISSING_EXTERN_C
721 if (missing_extern_C_count
)
723 "%s: %d declarations not protected by extern \"C\".\n",
724 inc_filename
, missing_extern_C_count
);
734 register struct symbol_list
*cur_symbols
;
736 if (required_unseen_count
)
738 #ifdef NO_IMPLICIT_EXTERN_C
739 fprintf (outf
, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
743 /* Now we print out prototypes for those functions that we haven't seen. */
744 for (cur_symbols
= &symbol_table
[0]; cur_symbols
->names
; cur_symbols
++)
746 int if_was_emitted
= 0;
748 cptr
= cur_symbols
->names
;
749 for ( ; (name_len
= strlen (cptr
)) != 0; cptr
+= name_len
+ 1)
751 int macro_protect
= 0;
753 if (cur_symbols
->flags
& MACRO_SYMBOL
)
756 fn
= lookup_std_proto (cptr
, name_len
);
757 if (fn
== NULL
|| !REQUIRED (fn
))
762 /* what about curses. ??? or _flsbuf/_filbuf ??? */
763 if (cur_symbols
->flags
& ANSI_SYMBOL
)
765 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
766 else if (cur_symbols
->flags
& (POSIX1_SYMBOL
|POSIX2_SYMBOL
))
768 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
769 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
770 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
771 else if (cur_symbols
->flags
& XOPEN_SYMBOL
)
774 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
775 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
777 else if (cur_symbols
->flags
& XOPEN_EXTENDED_SYMBOL
)
780 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
781 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
785 fatal ("internal error for function %s", fn
->fname
);
790 /* In the case of memmove, protect in case the application
791 defines it as a macro before including the header. */
792 if (!strcmp (fn
->fname
, "memmove")
793 || !strcmp (fn
->fname
, "putc")
794 || !strcmp (fn
->fname
, "getc")
795 || !strcmp (fn
->fname
, "vprintf")
796 || !strcmp (fn
->fname
, "vfprintf")
797 || !strcmp (fn
->fname
, "vsprintf")
798 || !strcmp (fn
->fname
, "rewinddir")
799 || !strcmp (fn
->fname
, "abort"))
803 fprintf (outf
, "#ifndef %s\n", fn
->fname
);
804 fprintf (outf
, "extern %s %s (%s);\n",
805 fn
->rtype
, fn
->fname
, fn
->params
);
807 fprintf (outf
, "#endif\n");
811 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
813 if (required_unseen_count
)
815 #ifdef NO_IMPLICIT_EXTERN_C
816 fprintf (outf
, "#ifdef __cplusplus\n}\n#endif\n");
820 switch (special_file_handling
)
824 fprintf (outf
, "extern int errno;\n");
827 if (!seen_EXIT_FAILURE
)
828 fprintf (outf
, "#define EXIT_FAILURE 1\n");
829 if (!seen_EXIT_SUCCESS
)
830 fprintf (outf
, "#define EXIT_SUCCESS 0\n");
833 if (!seen_S_ISBLK
&& seen_S_IFBLK
)
835 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
836 if (!seen_S_ISCHR
&& seen_S_IFCHR
)
838 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
839 if (!seen_S_ISDIR
&& seen_S_IFDIR
)
841 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
842 if (!seen_S_ISFIFO
&& seen_S_IFIFO
)
844 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
845 if (!seen_S_ISLNK
&& seen_S_IFLNK
)
847 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
848 if (!seen_S_ISREG
&& seen_S_IFREG
)
850 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
858 #if ADD_MISSING_EXTERN_C
859 if (missing_extern_C_count
+ required_unseen_count
> 0)
860 fprintf (outf
, "#ifdef __cplusplus\n}\n#endif\n");
864 /* Returns 1 iff the file is properly protected from multiple inclusion:
871 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
872 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
880 if (c
== ' ' || c
== '\t')
887 (void) INF_UNGET (c
);
898 source_lineno
++, lineno
++;
901 else if ((c
= INF_GET ()) == '/')
911 /* Read into STR from inf_buffer upto DELIM. */
914 inf_read_upto (str
, delim
)
922 if (ch
== EOF
|| ch
== delim
)
924 SSTRING_PUT (str
, ch
);
926 MAKE_SSTRING_SPACE (str
, 1);
932 inf_scan_ident (s
, c
)
937 if (ISALPHA (c
) || c
== '_')
943 if (c
== EOF
|| !(ISALNUM (c
) || c
== '_'))
947 MAKE_SSTRING_SPACE (s
, 1);
952 /* Returns 1 if the file is correctly protected against multiple
953 inclusion, setting *ifndef_line to the line number of the initial #ifndef
954 and setting *endif_line to the final #endif.
955 Otherwise return 0. */
958 check_protection (ifndef_line
, endif_line
)
959 int *ifndef_line
, *endif_line
;
962 int if_nesting
= 1; /* Level of nesting of #if's */
963 char *protect_name
= NULL
; /* Identifier following initial #ifndef */
966 /* Skip initial white space (including comments). */
969 c
= inf_skip_spaces (' ');
977 c
= inf_scan_ident (&buf
, inf_skip_spaces (' '));
978 if (SSTRING_LENGTH (&buf
) == 0 || strcmp (buf
.base
, "ifndef") != 0)
981 /* So far so good: We've seen an initial #ifndef. */
982 *ifndef_line
= lineno
;
983 c
= inf_scan_ident (&buf
, inf_skip_spaces (c
));
984 if (SSTRING_LENGTH (&buf
) == 0 || c
== EOF
)
986 protect_name
= xstrdup (buf
.base
);
988 (void) INF_UNGET (c
);
989 c
= inf_read_upto (&buf
, '\n');
996 c
= inf_skip_spaces (' ');
1006 c
= inf_scan_ident (&buf
, inf_skip_spaces (' '));
1007 if (SSTRING_LENGTH (&buf
) == 0)
1009 else if (!strcmp (buf
.base
, "ifndef")
1010 || !strcmp (buf
.base
, "ifdef") || !strcmp (buf
.base
, "if"))
1014 else if (!strcmp (buf
.base
, "endif"))
1017 if (if_nesting
== 0)
1020 else if (!strcmp (buf
.base
, "else"))
1022 if (if_nesting
== 1)
1025 else if (!strcmp (buf
.base
, "define"))
1027 c
= inf_skip_spaces (c
);
1028 c
= inf_scan_ident (&buf
, c
);
1029 if (buf
.base
[0] > 0 && strcmp (buf
.base
, protect_name
) == 0)
1035 if (c
== '\n' || c
== EOF
)
1046 *endif_line
= lineno
;
1047 /* Skip final white space (including comments). */
1050 c
= inf_skip_spaces (' ');
1060 extern int main
PARAMS ((int, char **));
1070 #ifdef FIXPROTO_IGNORE_LIST
1078 register struct symbol_list
*cur_symbols
;
1080 if (argv
[0] && argv
[0][0])
1085 for (p
= argv
[0]; *p
; p
++)
1088 progname
= progname
? progname
+1 : argv
[0];
1093 fprintf (stderr
, "%s: Usage: foo.h infile.h outfile.h options\n",
1095 exit (FATAL_EXIT_CODE
);
1098 inc_filename
= argv
[1];
1099 inc_filename_length
= strlen (inc_filename
);
1101 #ifdef FIXPROTO_IGNORE_LIST
1102 for (i
= 0; files_to_ignore
[i
] != NULL
; i
++)
1104 char *ignore_name
= files_to_ignore
[i
];
1105 int ignore_len
= strlen (ignore_name
);
1106 if (strncmp (inc_filename
, ignore_name
, ignore_len
) == 0)
1108 if (ignore_name
[ignore_len
-1] == '/'
1109 || inc_filename
[ignore_len
] == '\0')
1112 fprintf (stderr
, "%s: ignoring %s\n", progname
, inc_filename
);
1113 exit (SUCCESS_EXIT_CODE
);
1120 if (strcmp (inc_filename
, "sys/stat.h") == 0)
1121 special_file_handling
= sys_stat_h
;
1122 else if (strcmp (inc_filename
, "errno.h") == 0)
1123 special_file_handling
= errno_h
, required_other
++;
1124 else if (strcmp (inc_filename
, "stdlib.h") == 0)
1125 special_file_handling
= stdlib_h
, required_other
+=2;
1126 else if (strcmp (inc_filename
, "stdio.h") == 0)
1127 special_file_handling
= stdio_h
;
1128 include_entry
= std_include_table
;
1129 while (include_entry
->name
!= NULL
1130 && ((strcmp (include_entry
->name
, CONTINUED
) == 0)
1131 || strcmp (inc_filename
, include_entry
->name
) != 0))
1134 if (include_entry
->name
!= NULL
)
1136 struct std_include_entry
*entry
;
1137 cur_symbol_table_size
= 0;
1138 for (entry
= include_entry
; ;)
1141 add_symbols (entry
->flags
, entry
->names
);
1143 if (!entry
->name
|| strcmp (entry
->name
, CONTINUED
) != 0)
1148 symbol_table
[0].names
= NULL
;
1150 /* Count and mark the prototypes required for this include file. */
1151 for (cur_symbols
= &symbol_table
[0]; cur_symbols
->names
; cur_symbols
++)
1154 if (cur_symbols
->flags
& MACRO_SYMBOL
)
1156 cptr
= cur_symbols
->names
;
1157 for ( ; (name_len
= strlen (cptr
)) != 0; cptr
+= name_len
+ 1)
1159 struct fn_decl
*fn
= lookup_std_proto (cptr
, name_len
);
1160 required_unseen_count
++;
1162 fprintf (stderr
, "Internal error: No prototype for %s\n", cptr
);
1168 read_scan_file (argv
[2], argc
- 4, argv
+ 4);
1170 inf_fd
= open (argv
[2], O_RDONLY
, 0666);
1173 fprintf (stderr
, "%s: Cannot open '%s' for reading -",
1176 exit (FATAL_EXIT_CODE
);
1178 if (fstat (inf_fd
, &sbuf
) < 0)
1180 fprintf (stderr
, "%s: Cannot get size of '%s' -", progname
, argv
[2]);
1182 exit (FATAL_EXIT_CODE
);
1184 inf_size
= sbuf
.st_size
;
1185 inf_buffer
= (char *) xmalloc (inf_size
+ 2);
1186 inf_buffer
[inf_size
] = '\n';
1187 inf_buffer
[inf_size
+ 1] = '\0';
1188 inf_limit
= inf_buffer
+ inf_size
;
1189 inf_ptr
= inf_buffer
;
1194 long i
= read (inf_fd
, inf_buffer
+ inf_size
- to_read
, to_read
);
1197 fprintf (stderr
, "%s: Failed to read '%s' -", progname
, argv
[2]);
1199 exit (FATAL_EXIT_CODE
);
1203 inf_size
-= to_read
;
1211 /* If file doesn't end with '\n', add one. */
1212 if (inf_limit
> inf_buffer
&& inf_limit
[-1] != '\n')
1216 outf
= fopen (argv
[3], "w");
1219 fprintf (stderr
, "%s: Cannot open '%s' for writing -",
1222 exit (FATAL_EXIT_CODE
);
1227 if (check_protection (&ifndef_line
, &endif_line
))
1229 lbrac_line
= ifndef_line
+1;
1230 rbrac_line
= endif_line
;
1238 /* Reset input file. */
1239 inf_ptr
= inf_buffer
;
1244 if (lineno
== lbrac_line
)
1246 if (lineno
== rbrac_line
)
1254 if (ISALPHA (c
) || c
== '_')
1256 c
= inf_scan_ident (&buf
, c
);
1257 (void) INF_UNGET (c
);
1258 fputs (buf
.base
, outf
);
1259 fn
= lookup_std_proto (buf
.base
, strlen (buf
.base
));
1260 /* We only want to edit the declaration matching the one
1261 seen by scan-decls, as there can be multiple
1262 declarations, selected by #ifdef __STDC__ or whatever. */
1263 if (fn
&& fn
->partial
&& fn
->partial
->line_seen
== lineno
)
1265 c
= inf_skip_spaces (' ');
1270 c
= inf_skip_spaces (' ');
1273 fprintf (outf
, " _PARAMS((%s))", fn
->params
);
1278 (void) INF_UNGET (c
);
1282 fprintf (outf
, " %c", c
);
1310 fprintf (stderr
, "%s: %s: ", progname
, inc_filename
);
1311 vfprintf (stderr
, str
, ap
);
1312 fprintf (stderr
, "\n");
1314 exit (FATAL_EXIT_CODE
);
1318 fatal
VPARAMS ((const char *str
, ...))
1320 #ifndef ANSI_PROTOTYPES
1327 #ifndef ANSI_PROTOTYPES
1328 str
= va_arg (ap
, const char *);