1 /* fix-header.c - Make C header file suitable for C++.
2 Copyright (C) 1993, 94-97, 1998 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify it
5 under the terms of the GNU General Public License as published by the
6 Free Software Foundation; either version 2, or (at your option) any
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
18 /* This program massages a system include file (such as stdio.h),
19 into a form that is compatible with GNU C and GNU C++.
21 * extern "C" { ... } braces are added (inside #ifndef __cplusplus),
22 if they seem to be needed. These prevent C++ compilers from name
23 mangling the functions inside the braces.
25 * If an old-style incomplete function declaration is seen (without
26 an argument list), and it is a "standard" function listed in
27 the file sys-protos.h (and with a non-empty argument list), then
28 the declaration is converted to a complete prototype by replacing
29 the empty parameter list with the argument list from sys-protos.h.
31 * The program can be given a list of (names of) required standard
32 functions (such as fclose for stdio.h). If a required function
33 is not seen in the input, then a prototype for it will be
34 written to the output.
36 * If all of the non-comment code of the original file is protected
37 against multiple inclusion:
40 <body of include file>
42 then extra matter added to the include file is placed inside the <body>.
44 * If the input file is OK (nothing needs to be done);
45 the output file is not written (nor removed if it exists).
47 There are also some special actions that are done for certain
48 well-known standard include files:
50 * If argv[1] is "sys/stat.h", the Posix.1 macros
51 S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if
52 they were missing, and the corresponding "traditional" S_IFxxx
55 * If argv[1] is "errno.h", errno is declared if it was missing.
57 * TODO: The input file should be read complete into memory, because:
58 a) it needs to be scanned twice anyway, and
59 b) it would be nice to allow update in place.
62 fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
64 * FOO.H is the relative file name of the include file,
65 as it would be #include'd by a C file. (E.g. stdio.h)
66 * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h)
67 * OUTFILE.H is the full pathname for where to write the output file,
68 if anything needs to be done. (e.g. ./include/stdio.h)
69 * OPTIONS are such as you would pass to cpp.
71 Written by Per Bothner <bothner@cygnus.com>, July 1993. */
75 #include "gansidecl.h"
81 static void v_fatal PROTO ((const char *, va_list)) ATTRIBUTE_NORETURN;
82 void fatal PVPROTO ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
87 int partial_count = 0;
90 /* We no longer need to add extern "C", because cpp implicitly
91 forces the standard include files to be treated as C. */
92 /*#define ADD_MISSING_EXTERN_C 1 */
94 #if ADD_MISSING_EXTERN_C
95 int missing_extern_C_count = 0;
98 #include "xsys-protos.h"
100 #ifdef FIXPROTO_IGNORE_LIST
101 /* This is a currently unused feature. */
103 /* List of files and directories to ignore.
104 A directory name (ending in '/') means ignore anything in that
105 directory. (It might be more efficient to do directory pruning
106 earlier in fixproto, but this is simpler and easier to customize.) */
108 static char *files_to_ignore[] = {
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;
192 add_symbols (flags, names)
196 symbol_table[cur_symbol_table_size].flags = flags;
197 symbol_table[cur_symbol_table_size].names = names;
198 cur_symbol_table_size++;
199 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
200 fatal ("too many calls to add_symbols");
201 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
204 struct std_include_entry {
210 const char NONE[] = ""; /* The empty namelist. */
212 /* Special name to indicate a continuation line in std_include_table. */
213 const char CONTINUED[] = "";
215 struct std_include_entry *include_entry;
217 struct std_include_entry std_include_table [] = {
218 { "ctype.h", ANSI_SYMBOL,
219 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
220 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
222 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
224 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
226 /* ANSI_SYMBOL is wrong, but ... */
227 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
228 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
229 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
230 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
231 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
233 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
235 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
236 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
238 /*{ "limit.h", ... provided by gcc }, */
240 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
242 { "math.h", ANSI_SYMBOL,
243 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
244 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
247 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
249 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
251 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
252 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
254 /* Left out signal() - its prototype is too complex for us!
255 Also left out "sigaction sigaddset sigdelset sigemptyset
256 sigfillset sigismember sigpending sigprocmask sigsuspend"
257 because these need sigset_t or struct sigaction.
258 Most systems that provide them will also declare them. */
259 { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
261 { "stdio.h", ANSI_SYMBOL,
262 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
263 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
264 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
265 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
266 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
268 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
269 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
270 /* Should perhaps also handle NULL, EOF, ... ? */
272 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
273 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
274 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
275 Should perhaps also add NULL */
276 { "stdlib.h", ANSI_SYMBOL,
277 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
278 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
279 srand\0strtod\0strtol\0strtoul\0system\0" },
280 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
282 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
283 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
284 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
285 strtok\0strxfrm\0" },
286 /* Should perhaps also add NULL and size_t */
288 { "strings.h", XOPEN_EXTENDED_SYMBOL,
289 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
291 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
293 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
294 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
295 and many systems do have <sys/ioctl.h> but not <strops.h>. */
296 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
298 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
300 { "sys/stat.h", POSIX1_SYMBOL,
301 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
302 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
303 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
304 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
305 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
308 /* How do we handle fd_set? */
309 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
310 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
313 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
314 /* "sys/types.h" add types (not in old g++-include) */
316 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
318 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
319 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
320 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
321 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
323 { "tar.h", POSIX1_SYMBOL, NONE },
325 { "termios.h", POSIX1_SYMBOL,
326 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
328 { "time.h", ANSI_SYMBOL,
329 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
331 { "unistd.h", POSIX1_SYMBOL,
332 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
333 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
334 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
335 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
336 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
337 ttyname\0unlink\0write\0" },
338 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
339 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
340 "lockf\0gethostid\0gethostname\0readlink\0symlink\0" },
342 { "utime.h", POSIX1_SYMBOL, "utime\0" },
347 enum special_file special_file_handling = no_special;
349 /* They are set if the corresponding macro has been seen. */
350 /* The following are only used when handling sys/stat.h */
351 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
352 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
353 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
354 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
355 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
356 int seen_S_IFREG = 0, seen_S_ISREG = 0;
357 /* The following are only used when handling errno.h */
359 /* The following are only used when handling stdlib.h */
360 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
362 /* Wrapper around free, to avoid prototype clashes. */
371 /* Avoid error if config defines abort as fancy_abort.
372 It's not worth "really" implementing this because ordinary
373 compiler users never run fix-header. */
381 #define obstack_chunk_alloc xmalloc
382 #define obstack_chunk_free xfree
383 struct obstack scan_file_obstack;
385 /* NOTE: If you edit this, also edit gen-protos.c !! */
388 lookup_std_proto (name, name_length)
392 int i = hashf (name, name_length, HASH_SIZE);
397 if (hash_tab[i] == 0)
399 fn = &std_protos[hash_tab[i]];
400 if (strlen (fn->fname) == name_length
401 && strncmp (fn->fname, name, name_length) == 0)
403 i = (i+1) % HASH_SIZE;
410 int inc_filename_length;
411 char *progname = "fix-header";
415 int lbrac_line, rbrac_line;
417 int required_unseen_count = 0;
418 int required_other = 0;
424 #if ADD_MISSING_EXTERN_C
425 if (missing_extern_C_count + required_unseen_count > 0)
426 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
431 fprintf (outf, "#ifndef _PARAMS\n");
432 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
433 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
434 fprintf (outf, "#else\n");
435 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
436 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
442 struct partial_proto *next;
443 char *fname; /* name of function */
444 char *rtype; /* return type */
449 struct partial_proto *partial_proto_list = NULL;
451 struct partial_proto required_dummy_proto, seen_dummy_proto;
452 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
453 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
454 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
455 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
458 recognized_macro (fname)
461 /* The original include file defines fname as a macro. */
462 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
464 /* Since fname is a macro, don't require a prototype for it. */
468 required_unseen_count--;
472 switch (special_file_handling)
475 if (strcmp (fname, "errno") == 0 && !seen_errno)
476 seen_errno = 1, required_other--;
479 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
480 seen_EXIT_FAILURE = 1, required_other--;
481 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
482 seen_EXIT_SUCCESS = 1, required_other--;
485 if (fname[0] == 'S' && fname[1] == '_')
487 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
488 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
489 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
490 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
491 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
492 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
493 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
494 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
495 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
496 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
497 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
498 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
508 recognized_extern (name, name_length, type, type_length)
511 int name_length, type_length;
513 switch (special_file_handling)
516 if (name_length == 5 && strncmp (name, "errno", 5) == 0 && !seen_errno)
517 seen_errno = 1, required_other--;
525 /* Called by scan_decls if it saw a function definition for a function
526 named FNAME, with return type RTYPE, and argument list ARGS,
527 in source file FILE_SEEN on line LINE_SEEN.
528 KIND is 'I' for an inline function;
529 'F' if a normal function declaration preceded by 'extern "C"'
530 (or nested inside 'extern "C"' braces); or
531 'f' for other function declarations. */
534 recognized_function (fname, fname_length,
535 kind, rtype, rtype_length,
536 have_arg_list, file_seen, line_seen)
539 int kind; /* One of 'f' 'F' or 'I' */
546 struct partial_proto *partial;
549 #if ADD_MISSING_EXTERN_C
551 missing_extern_C_count++;
554 fn = lookup_std_proto (fname, fname_length);
556 /* Remove the function from the list of required function. */
560 required_unseen_count--;
564 /* If we have a full prototype, we're done. */
568 if (kind == 'I') /* don't edit inline function */
571 /* If the partial prototype was included from some other file,
572 we don't need to patch it up (in this run). */
573 i = strlen (file_seen);
574 if (i < inc_filename_length
575 || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
580 if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
583 /* We only have a partial function declaration,
584 so remember that we have to add a complete prototype. */
586 partial = (struct partial_proto *)
587 obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
588 partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
589 bcopy (fname, partial->fname, fname_length);
590 partial->fname[fname_length] = 0;
591 partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
592 sprintf (partial->rtype, "%.*s", rtype_length, rtype);
593 partial->line_seen = line_seen;
595 fn->partial = partial;
596 partial->next = partial_proto_list;
597 partial_proto_list = partial;
600 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
601 inc_filename, partial->fname);
605 /* For any name in NAMES that is defined as a macro,
606 call recognized_macro on it. */
609 check_macro_names (pfile, names)
615 if (cpp_lookup (pfile, names, -1, -1))
616 recognized_macro (names);
617 names += strlen (names) + 1;
622 read_scan_file (in_fname, argc, argv)
628 cpp_options scan_options;
631 register struct symbol_list *cur_symbols;
633 obstack_init (&scan_file_obstack);
635 cpp_reader_init (&scan_in);
636 scan_in.data = &scan_options;
637 cpp_options_init (&scan_options);
638 i = cpp_handle_options (&scan_in, argc, argv);
639 if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
640 cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
641 if (CPP_FATAL_ERRORS (&scan_in))
642 exit (FATAL_EXIT_CODE);
644 if (! cpp_start_read (&scan_in, in_fname))
645 exit (FATAL_EXIT_CODE);
646 CPP_OPTIONS (&scan_in)->no_line_commands = 1;
648 scan_decls (&scan_in, argc, argv);
649 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
650 check_macro_names (&scan_in, cur_symbols->names);
652 if (verbose && (scan_in.errors + warnings) > 0)
653 fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
654 inc_filename, scan_in.errors, warnings);
656 exit (SUCCESS_EXIT_CODE);
658 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
659 If so, those functions are also required. */
660 if (special_file_handling == stdio_h
661 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
663 static char getchar_call[] = "getchar();";
665 = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
666 int old_written = CPP_WRITTEN (&scan_in);
669 /* Scan the macro expansion of "getchar();". */
672 enum cpp_token token = cpp_get_token (&scan_in);
673 int length = CPP_WRITTEN (&scan_in) - old_written;
674 CPP_SET_WRITTEN (&scan_in, old_written);
675 if (token == CPP_EOF) /* Should not happen ... */
677 if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
679 cpp_pop_buffer (&scan_in);
682 if (token == CPP_NAME && length == 7
683 && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
688 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
689 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
691 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
693 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
694 if (need_filbuf + need_flsbuf)
700 SET_REQUIRED (flsbuf_fn);
701 if (need_flsbuf + need_filbuf == 2)
702 new_list = "_filbuf\0_flsbuf\0";
703 else if (need_flsbuf)
704 new_list = "_flsbuf\0";
705 else /* if (need_flsbuf) */
706 new_list = "_filbuf\0";
707 add_symbols (ANSI_SYMBOL, new_list);
708 required_unseen_count += need_filbuf + need_flsbuf;
713 if (required_unseen_count + partial_count + required_other
714 #if ADD_MISSING_EXTERN_C
715 + missing_extern_C_count
720 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
721 exit (SUCCESS_EXIT_CODE);
724 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
727 if (required_unseen_count)
728 fprintf (stderr, "%s: %d missing function declarations.\n",
729 inc_filename, required_unseen_count);
731 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
732 inc_filename, partial_count);
733 #if ADD_MISSING_EXTERN_C
734 if (missing_extern_C_count)
736 "%s: %d declarations not protected by extern \"C\".\n",
737 inc_filename, missing_extern_C_count);
747 register struct symbol_list *cur_symbols;
749 if (required_unseen_count)
751 #ifdef NO_IMPLICIT_EXTERN_C
752 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
756 /* Now we print out prototypes for those functions that we haven't seen. */
757 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
759 int if_was_emitted = 0;
761 cptr = cur_symbols->names;
762 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
764 int macro_protect = 0;
766 if (cur_symbols->flags & MACRO_SYMBOL)
769 fn = lookup_std_proto (cptr, name_len);
770 if (fn == NULL || !REQUIRED (fn))
775 /* what about curses. ??? or _flsbuf/_filbuf ??? */
776 if (cur_symbols->flags & ANSI_SYMBOL)
778 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
779 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
781 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
782 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
783 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
784 else if (cur_symbols->flags & XOPEN_SYMBOL)
787 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
788 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
790 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
793 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
794 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
798 fatal ("internal error for function %s", fn->fname);
803 /* In the case of memmove, protect in case the application
804 defines it as a macro before including the header. */
805 if (!strcmp (fn->fname, "memmove")
806 || !strcmp (fn->fname, "vprintf")
807 || !strcmp (fn->fname, "vfprintf")
808 || !strcmp (fn->fname, "vsprintf")
809 || !strcmp (fn->fname, "rewinddir")
810 || !strcmp (fn->fname, "abort"))
814 fprintf (outf, "#ifndef %s\n", fn->fname);
815 fprintf (outf, "extern %s %s (%s);\n",
816 fn->rtype, fn->fname, fn->params);
818 fprintf (outf, "#endif\n");
822 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
824 if (required_unseen_count)
826 #ifdef NO_IMPLICIT_EXTERN_C
827 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
831 switch (special_file_handling)
835 fprintf (outf, "extern int errno;\n");
838 if (!seen_EXIT_FAILURE)
839 fprintf (outf, "#define EXIT_FAILURE 1\n");
840 if (!seen_EXIT_SUCCESS)
841 fprintf (outf, "#define EXIT_SUCCESS 0\n");
844 if (!seen_S_ISBLK && seen_S_IFBLK)
846 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
847 if (!seen_S_ISCHR && seen_S_IFCHR)
849 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
850 if (!seen_S_ISDIR && seen_S_IFDIR)
852 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
853 if (!seen_S_ISFIFO && seen_S_IFIFO)
855 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
856 if (!seen_S_ISLNK && seen_S_IFLNK)
858 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
859 if (!seen_S_ISREG && seen_S_IFREG)
861 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
869 #if ADD_MISSING_EXTERN_C
870 if (missing_extern_C_count + required_unseen_count > 0)
871 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
879 char *copy = (char *) xmalloc (strlen (str) + 1);
884 /* Returns 1 iff the file is properly protected from multiple inclusion:
891 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
892 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
900 if (c == ' ' || c == '\t')
907 (void) INF_UNGET (c);
918 source_lineno++, lineno++;
921 else if ((c = INF_GET ()) == '/')
931 /* Read into STR from inf_buffer upto DELIM. */
934 inf_read_upto (str, delim)
942 if (ch == EOF || ch == delim)
944 SSTRING_PUT (str, ch);
946 MAKE_SSTRING_SPACE (str, 1);
952 inf_scan_ident (s, c)
957 if (ISALPHA (c) || c == '_')
963 if (c == EOF || !(ISALNUM (c) || c == '_'))
967 MAKE_SSTRING_SPACE (s, 1);
972 /* Returns 1 if the file is correctly protected against multiple
973 inclusion, setting *ifndef_line to the line number of the initial #ifndef
974 and setting *endif_line to the final #endif.
975 Otherwise return 0. */
978 check_protection (ifndef_line, endif_line)
979 int *ifndef_line, *endif_line;
982 int if_nesting = 1; /* Level of nesting of #if's */
983 char *protect_name = NULL; /* Identifier following initial #ifndef */
986 /* Skip initial white space (including comments). */
989 c = inf_skip_spaces (' ');
997 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
998 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
1001 /* So far so good: We've seen an initial #ifndef. */
1002 *ifndef_line = lineno;
1003 c = inf_scan_ident (&buf, inf_skip_spaces (c));
1004 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
1006 protect_name = xstrdup (buf.base);
1008 (void) INF_UNGET (c);
1009 c = inf_read_upto (&buf, '\n');
1016 c = inf_skip_spaces (' ');
1026 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1027 if (SSTRING_LENGTH (&buf) == 0)
1029 else if (!strcmp (buf.base, "ifndef")
1030 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1034 else if (!strcmp (buf.base, "endif"))
1037 if (if_nesting == 0)
1040 else if (!strcmp (buf.base, "else"))
1042 if (if_nesting == 1)
1045 else if (!strcmp (buf.base, "define"))
1047 if (if_nesting != 1)
1049 c = inf_skip_spaces (c);
1050 c = inf_scan_ident (&buf, c);
1051 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1057 if (c == '\n' || c == EOF)
1068 *endif_line = lineno;
1069 /* Skip final white space (including comments). */
1072 c = inf_skip_spaces (' ');
1090 #ifdef FIXPROTO_IGNORE_LIST
1098 register struct symbol_list *cur_symbols;
1100 if (argv[0] && argv[0][0])
1105 for (p = argv[0]; *p; p++)
1108 progname = progname ? progname+1 : argv[0];
1113 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1115 exit (FATAL_EXIT_CODE);
1118 inc_filename = argv[1];
1119 inc_filename_length = strlen (inc_filename);
1121 #ifdef FIXPROTO_IGNORE_LIST
1122 for (i = 0; files_to_ignore[i] != NULL; i++)
1124 char *ignore_name = files_to_ignore[i];
1125 int ignore_len = strlen (ignore_name);
1126 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1128 if (ignore_name[ignore_len-1] == '/'
1129 || inc_filename[ignore_len] == '\0')
1132 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1133 exit (SUCCESS_EXIT_CODE);
1140 if (strcmp (inc_filename, "sys/stat.h") == 0)
1141 special_file_handling = sys_stat_h;
1142 else if (strcmp (inc_filename, "errno.h") == 0)
1143 special_file_handling = errno_h, required_other++;
1144 else if (strcmp (inc_filename, "stdlib.h") == 0)
1145 special_file_handling = stdlib_h, required_other+=2;
1146 else if (strcmp (inc_filename, "stdio.h") == 0)
1147 special_file_handling = stdio_h;
1148 include_entry = std_include_table;
1149 while (include_entry->name != NULL
1150 && (include_entry->name == CONTINUED
1151 || strcmp (inc_filename, include_entry->name) != 0))
1154 if (include_entry->name != NULL)
1156 struct std_include_entry *entry;
1157 cur_symbol_table_size = 0;
1158 for (entry = include_entry; ;)
1161 add_symbols (entry->flags, entry->names);
1163 if (entry->name != CONTINUED)
1168 symbol_table[0].names = NULL;
1170 /* Count and mark the prototypes required for this include file. */
1171 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1174 if (cur_symbols->flags & MACRO_SYMBOL)
1176 cptr = cur_symbols->names;
1177 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1179 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1180 required_unseen_count++;
1182 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
1188 read_scan_file (argv[2], argc - 4, argv + 4);
1190 inf_fd = open (argv[2], O_RDONLY, 0666);
1193 fprintf (stderr, "%s: Cannot open '%s' for reading -",
1196 exit (FATAL_EXIT_CODE);
1198 if (fstat (inf_fd, &sbuf) < 0)
1200 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1202 exit (FATAL_EXIT_CODE);
1204 inf_size = sbuf.st_size;
1205 inf_buffer = (char *) xmalloc (inf_size + 2);
1206 inf_buffer[inf_size] = '\n';
1207 inf_buffer[inf_size + 1] = '\0';
1208 inf_limit = inf_buffer + inf_size;
1209 inf_ptr = inf_buffer;
1214 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1217 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1219 exit (FATAL_EXIT_CODE);
1223 inf_size -= to_read;
1231 /* If file doesn't end with '\n', add one. */
1232 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1236 outf = fopen (argv[3], "w");
1239 fprintf (stderr, "%s: Cannot open '%s' for writing -",
1242 exit (FATAL_EXIT_CODE);
1247 if (check_protection (&ifndef_line, &endif_line))
1249 lbrac_line = ifndef_line+1;
1250 rbrac_line = endif_line;
1258 /* Reset input file. */
1259 inf_ptr = inf_buffer;
1264 if (lineno == lbrac_line)
1266 if (lineno == rbrac_line)
1274 if (ISALPHA (c) || c == '_')
1276 c = inf_scan_ident (&buf, c);
1277 (void) INF_UNGET (c);
1278 fputs (buf.base, outf);
1279 fn = lookup_std_proto (buf.base, strlen (buf.base));
1280 /* We only want to edit the declaration matching the one
1281 seen by scan-decls, as there can be multiple
1282 declarations, selected by #ifdef __STDC__ or whatever. */
1283 if (fn && fn->partial && fn->partial->line_seen == lineno)
1285 c = inf_skip_spaces (' ');
1290 c = inf_skip_spaces (' ');
1293 fprintf (outf, " _PARAMS((%s))", fn->params);
1298 (void) INF_UNGET (c);
1302 fprintf (outf, " %c", c);
1324 /* Stub error functions. These replace cpperror.c,
1325 because we want to suppress error messages. */
1328 cpp_file_line_for_message (pfile, filename, line, column)
1336 fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1338 fprintf (stderr, "%s:%d: ", filename, line);
1342 cpp_print_containing_files (pfile)
1343 cpp_reader *pfile ATTRIBUTE_UNUSED;
1347 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1350 v_cpp_message (pfile, is_error, msg, ap)
1358 else if (is_error > 1)
1359 pfile->errors = CPP_FATAL_LIMIT;
1363 fprintf (stderr, "warning: ");
1364 vfprintf (stderr, msg, ap);
1365 fprintf (stderr, "\n");
1369 cpp_message VPROTO ((cpp_reader *pfile, int is_error, const char *msg, ...))
1381 pfile = va_arg (ap, cpp_reader *);
1382 is_error = va_arg (ap, const int);
1383 msg = va_arg (ap, const char *);
1386 v_cpp_message(pfile, is_error, msg, ap);
1395 fprintf (stderr, "%s: %s: ", progname, inc_filename);
1396 vfprintf (stderr, str, ap);
1397 fprintf (stderr, "\n");
1399 exit (FATAL_EXIT_CODE);
1403 fatal VPROTO ((const char *str, ...))
1413 str = va_arg (ap, const char *);
1421 cpp_fatal VPROTO ((cpp_reader * pfile, const char *str, ...))
1432 pfile = va_arg (ap, cpp_reader *);
1433 str = va_arg (ap, const char *);
1441 cpp_pfatal_with_name (pfile, name)
1445 cpp_perror_with_name (pfile, name);
1446 exit (FATAL_EXIT_CODE);