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. */
78 #include "gansidecl.h"
80 extern void cpp_fatal ();
82 #if !__STDC__ && !defined(const)
83 #define const /* nothing */
89 int partial_count = 0;
92 /* We no longer need to add extern "C", because cpp implicitly
93 forces the standard include files to be treated as C. */
94 /*#define ADD_MISSING_EXTERN_C 1 */
96 #if ADD_MISSING_EXTERN_C
97 int missing_extern_C_count = 0;
100 #include "xsys-protos.h"
102 #ifdef FIXPROTO_IGNORE_LIST
103 /* This is a currently unused feature. */
105 /* List of files and directories to ignore.
106 A directory name (ending in '/') means ignore anything in that
107 directory. (It might be more efficient to do directory pruning
108 earlier in fixproto, but this is simpler and easier to customize.) */
110 static char *files_to_ignore[] = {
121 /* Certain standard files get extra treatment */
144 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
145 by an empty name (i.e. by "\0\0"). */
147 typedef const char *namelist;
149 /* The following macros provide the bits for symbol_flags. */
150 typedef int symbol_flags;
152 /* Used to mark names defined in the ANSI/ISO C standard. */
153 #define ANSI_SYMBOL 1
155 /* We no longer massage include files for POSIX or XOPEN symbols,
156 as there are now several versions of the POSIX and XOPEN standards,
157 and it would be a maintenance nightmare for us to track them all.
158 Better to be compatible with the system include files. */
159 /*#define ADD_MISSING_POSIX 1 */
160 /*#define ADD_MISSING_XOPEN 1 */
162 #if ADD_MISSING_POSIX
163 /* Used to mark names defined in the Posix.1 or Posix.2 standard. */
164 #define POSIX1_SYMBOL 2
165 #define POSIX2_SYMBOL 4
167 #define POSIX1_SYMBOL 0
168 #define POSIX2_SYMBOL 0
171 #if ADD_MISSING_XOPEN
172 /* Used to mark names defined in X/Open Portability Guide. */
173 #define XOPEN_SYMBOL 8
174 /* Used to mark names defined in X/Open UNIX Extensions. */
175 #define XOPEN_EXTENDED_SYMBOL 16
177 #define XOPEN_SYMBOL 0
178 #define XOPEN_EXTENDED_SYMBOL 0
181 /* Used to indicate names that are not functions */
182 #define MACRO_SYMBOL 512
189 #define SYMBOL_TABLE_SIZE 10
190 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
191 int cur_symbol_table_size;
194 add_symbols (flags, names)
198 symbol_table[cur_symbol_table_size].flags = flags;
199 symbol_table[cur_symbol_table_size].names = names;
200 cur_symbol_table_size++;
201 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
202 fatal ("too many calls to add_symbols");
203 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
206 struct std_include_entry {
212 const char NONE[] = ""; /* The empty namelist. */
214 /* Special name to indicate a continuation line in std_include_table. */
215 const char CONTINUED[] = "";
217 struct std_include_entry *include_entry;
219 struct std_include_entry std_include_table [] = {
220 { "ctype.h", ANSI_SYMBOL,
221 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
222 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
224 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
226 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
228 /* ANSI_SYMBOL is wrong, but ... */
229 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
230 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
231 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
232 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
233 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
235 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
237 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
238 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
240 /*{ "limit.h", ... provided by gcc }, */
242 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
244 { "math.h", ANSI_SYMBOL,
245 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
246 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
249 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
251 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
253 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
254 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
256 /* Left out signal() - its prototype is too complex for us!
257 Also left out "sigaction sigaddset sigdelset sigemptyset
258 sigfillset sigismember sigpending sigprocmask sigsuspend"
259 because these need sigset_t or struct sigaction.
260 Most systems that provide them will also declare them. */
261 { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
263 { "stdio.h", ANSI_SYMBOL,
264 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
265 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
266 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
267 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
268 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
270 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
271 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
272 /* Should perhaps also handle NULL, EOF, ... ? */
274 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
275 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
276 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
277 Should perhaps also add NULL */
278 { "stdlib.h", ANSI_SYMBOL,
279 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
280 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
281 srand\0strtod\0strtol\0strtoul\0system\0" },
282 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
284 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
285 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
286 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
287 strtok\0strxfrm\0" },
288 /* Should perhaps also add NULL and size_t */
290 { "strings.h", XOPEN_EXTENDED_SYMBOL,
291 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
293 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
295 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
296 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
297 and many systems do have <sys/ioctl.h> but not <strops.h>. */
298 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
300 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
302 { "sys/stat.h", POSIX1_SYMBOL,
303 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
304 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
305 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
306 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
307 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
310 /* How do we handle fd_set? */
311 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
312 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
315 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
316 /* "sys/types.h" add types (not in old g++-include) */
318 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
320 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
321 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
322 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
323 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
325 { "tar.h", POSIX1_SYMBOL, NONE },
327 { "termios.h", POSIX1_SYMBOL,
328 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
330 { "time.h", ANSI_SYMBOL,
331 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
333 { "unistd.h", POSIX1_SYMBOL,
334 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
335 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
336 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
337 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
338 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
339 ttyname\0unlink\0write\0" },
340 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
341 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
342 "lockf\0gethostid\0gethostname\0readlink\0" },
344 { "utime.h", POSIX1_SYMBOL, "utime\0" },
349 enum special_file special_file_handling = no_special;
351 /* They are set if the corresponding macro has been seen. */
352 /* The following are only used when handling sys/stat.h */
353 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
354 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
355 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
356 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
357 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
358 int seen_S_IFREG = 0, seen_S_ISREG = 0;
359 /* The following are only used when handling errno.h */
361 /* The following are only used when handling stdlib.h */
362 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
364 /* Wrapper around free, to avoid prototype clashes. */
373 /* Avoid error if config defines abort as fancy_abort.
374 It's not worth "really" implementing this because ordinary
375 compiler users never run fix-header. */
383 #define obstack_chunk_alloc xmalloc
384 #define obstack_chunk_free xfree
385 struct obstack scan_file_obstack;
387 /* NOTE: If you edit this, also edit gen-protos.c !! */
390 lookup_std_proto (name, name_length)
394 int i = hashf (name, name_length, HASH_SIZE);
399 if (hash_tab[i] == 0)
401 fn = &std_protos[hash_tab[i]];
402 if (strlen (fn->fname) == name_length
403 && strncmp (fn->fname, name, name_length) == 0)
405 i = (i+1) % HASH_SIZE;
412 int inc_filename_length;
413 char *progname = "fix-header";
417 int lbrac_line, rbrac_line;
419 int required_unseen_count = 0;
420 int required_other = 0;
426 #if ADD_MISSING_EXTERN_C
427 if (missing_extern_C_count + required_unseen_count > 0)
428 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
433 fprintf (outf, "#ifndef _PARAMS\n");
434 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
435 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
436 fprintf (outf, "#else\n");
437 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
438 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
444 struct partial_proto *next;
445 char *fname; /* name of function */
446 char *rtype; /* return type */
451 struct partial_proto *partial_proto_list = NULL;
453 struct partial_proto required_dummy_proto, seen_dummy_proto;
454 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
455 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
456 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
457 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
460 recognized_macro (fname)
463 /* The original include file defines fname as a macro. */
464 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
466 /* Since fname is a macro, don't require a prototype for it. */
470 required_unseen_count--;
474 switch (special_file_handling)
477 if (strcmp (fname, "errno") == 0 && !seen_errno)
478 seen_errno = 1, required_other--;
481 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
482 seen_EXIT_FAILURE = 1, required_other--;
483 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
484 seen_EXIT_SUCCESS = 1, required_other--;
487 if (fname[0] == 'S' && fname[1] == '_')
489 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
490 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
491 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
492 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
493 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
494 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
495 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
496 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
497 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
498 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
499 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
500 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
510 recognized_extern (name, name_length, type, type_length)
513 int name_length, type_length;
515 switch (special_file_handling)
518 if (name_length == 5 && strncmp (name, "errno", 5) == 0 && !seen_errno)
519 seen_errno = 1, required_other--;
527 /* Called by scan_decls if it saw a function definition for a function
528 named FNAME, with return type RTYPE, and argument list ARGS,
529 in source file FILE_SEEN on line LINE_SEEN.
530 KIND is 'I' for an inline function;
531 'F' if a normal function declaration preceded by 'extern "C"'
532 (or nested inside 'extern "C"' braces); or
533 'f' for other function declarations. */
536 recognized_function (fname, fname_length,
537 kind, rtype, rtype_length,
538 have_arg_list, file_seen, line_seen)
541 int kind; /* One of 'f' 'F' or 'I' */
548 struct partial_proto *partial;
551 #if ADD_MISSING_EXTERN_C
553 missing_extern_C_count++;
556 fn = lookup_std_proto (fname, fname_length);
558 /* Remove the function from the list of required function. */
562 required_unseen_count--;
566 /* If we have a full prototype, we're done. */
570 if (kind == 'I') /* don't edit inline function */
573 /* If the partial prototype was included from some other file,
574 we don't need to patch it up (in this run). */
575 i = strlen (file_seen);
576 if (i < inc_filename_length
577 || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
582 if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
585 /* We only have a partial function declaration,
586 so remember that we have to add a complete prototype. */
588 partial = (struct partial_proto *)
589 obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
590 partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
591 bcopy (fname, partial->fname, fname_length);
592 partial->fname[fname_length] = 0;
593 partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
594 sprintf (partial->rtype, "%.*s", rtype_length, rtype);
595 partial->line_seen = line_seen;
597 fn->partial = partial;
598 partial->next = partial_proto_list;
599 partial_proto_list = partial;
602 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
603 inc_filename, partial->fname);
607 /* For any name in NAMES that is defined as a macro,
608 call recognized_macro on it. */
611 check_macro_names (pfile, names)
617 if (cpp_lookup (pfile, names, -1, -1))
618 recognized_macro (names);
619 names += strlen (names) + 1;
624 read_scan_file (in_fname, argc, argv)
630 cpp_options scan_options;
633 register struct symbol_list *cur_symbols;
635 obstack_init (&scan_file_obstack);
637 cpp_reader_init (&scan_in);
638 scan_in.data = &scan_options;
639 cpp_options_init (&scan_options);
640 i = cpp_handle_options (&scan_in, argc, argv);
641 if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
642 cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
643 if (CPP_FATAL_ERRORS (&scan_in))
644 exit (FATAL_EXIT_CODE);
646 if (! cpp_start_read (&scan_in, in_fname))
647 exit (FATAL_EXIT_CODE);
648 CPP_OPTIONS (&scan_in)->no_line_commands = 1;
650 scan_decls (&scan_in, argc, argv);
651 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
652 check_macro_names (&scan_in, cur_symbols->names);
654 if (verbose && (scan_in.errors + warnings) > 0)
655 fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
656 inc_filename, scan_in.errors, warnings);
658 exit (SUCCESS_EXIT_CODE);
660 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
661 If so, those functions are also required. */
662 if (special_file_handling == stdio_h
663 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
665 static char getchar_call[] = "getchar();";
667 = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
668 int old_written = CPP_WRITTEN (&scan_in);
671 /* Scan the macro expansion of "getchar();". */
674 enum cpp_token token = cpp_get_token (&scan_in);
675 int length = CPP_WRITTEN (&scan_in) - old_written;
676 CPP_SET_WRITTEN (&scan_in, old_written);
677 if (token == CPP_EOF) /* Should not happen ... */
679 if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
681 cpp_pop_buffer (&scan_in);
684 if (token == CPP_NAME && length == 7
685 && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
690 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
691 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
693 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
695 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
696 if (need_filbuf + need_flsbuf)
702 SET_REQUIRED (flsbuf_fn);
703 if (need_flsbuf + need_filbuf == 2)
704 new_list = "_filbuf\0_flsbuf\0";
705 else if (need_flsbuf)
706 new_list = "_flsbuf\0";
707 else /* if (need_flsbuf) */
708 new_list = "_filbuf\0";
709 add_symbols (ANSI_SYMBOL, new_list);
710 required_unseen_count += need_filbuf + need_flsbuf;
715 if (required_unseen_count + partial_count + required_other
716 #if ADD_MISSING_EXTERN_C
717 + missing_extern_C_count
722 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
723 exit (SUCCESS_EXIT_CODE);
726 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
729 if (required_unseen_count)
730 fprintf (stderr, "%s: %d missing function declarations.\n",
731 inc_filename, required_unseen_count);
733 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
734 inc_filename, partial_count);
735 #if ADD_MISSING_EXTERN_C
736 if (missing_extern_C_count)
738 "%s: %d declarations not protected by extern \"C\".\n",
739 inc_filename, missing_extern_C_count);
749 register struct symbol_list *cur_symbols;
751 if (required_unseen_count)
753 #ifdef NO_IMPLICIT_EXTERN_C
754 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
758 /* Now we print out prototypes for those functions that we haven't seen. */
759 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
761 int if_was_emitted = 0;
763 cptr = cur_symbols->names;
764 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
766 int macro_protect = 0;
768 if (cur_symbols->flags & MACRO_SYMBOL)
771 fn = lookup_std_proto (cptr, name_len);
772 if (fn == NULL || !REQUIRED (fn))
777 /* what about curses. ??? or _flsbuf/_filbuf ??? */
778 if (cur_symbols->flags & ANSI_SYMBOL)
780 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
781 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
783 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
784 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
785 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
786 else if (cur_symbols->flags & XOPEN_SYMBOL)
789 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
790 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
792 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
795 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
796 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
800 fatal ("internal error for function %s", fn->fname);
805 /* In the case of memmove, protect in case the application
806 defines it as a macro before including the header. */
807 if (!strcmp (fn->fname, "memmove")
808 || !strcmp (fn->fname, "vprintf")
809 || !strcmp (fn->fname, "vfprintf")
810 || !strcmp (fn->fname, "vsprintf")
811 || !strcmp (fn->fname, "rewinddir")
812 || !strcmp (fn->fname, "abort"))
816 fprintf (outf, "#ifndef %s\n", fn->fname);
817 fprintf (outf, "extern %s %s (%s);\n",
818 fn->rtype, fn->fname, fn->params);
820 fprintf (outf, "#endif\n");
824 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
826 if (required_unseen_count)
828 #ifdef NO_IMPLICIT_EXTERN_C
829 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
833 switch (special_file_handling)
837 fprintf (outf, "extern int errno;\n");
840 if (!seen_EXIT_FAILURE)
841 fprintf (outf, "#define EXIT_FAILURE 1\n");
842 if (!seen_EXIT_SUCCESS)
843 fprintf (outf, "#define EXIT_SUCCESS 0\n");
846 if (!seen_S_ISBLK && seen_S_IFBLK)
848 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
849 if (!seen_S_ISCHR && seen_S_IFCHR)
851 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
852 if (!seen_S_ISDIR && seen_S_IFDIR)
854 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
855 if (!seen_S_ISFIFO && seen_S_IFIFO)
857 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
858 if (!seen_S_ISLNK && seen_S_IFLNK)
860 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
861 if (!seen_S_ISREG && seen_S_IFREG)
863 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
871 #if ADD_MISSING_EXTERN_C
872 if (missing_extern_C_count + required_unseen_count > 0)
873 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
881 char *copy = (char *) xmalloc (strlen (str) + 1);
886 /* Returns 1 iff the file is properly protected from multiple inclusion:
893 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
894 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
902 if (c == ' ' || c == '\t')
909 (void) INF_UNGET (c);
920 source_lineno++, lineno++;
923 else if ((c = INF_GET ()) == '/')
933 /* Read into STR from inf_buffer upto DELIM. */
936 inf_read_upto (str, delim)
944 if (ch == EOF || ch == delim)
946 SSTRING_PUT (str, ch);
948 MAKE_SSTRING_SPACE (str, 1);
954 inf_scan_ident (s, c)
959 if (ISALPHA (c) || c == '_')
965 if (c == EOF || !(ISALNUM (c) || c == '_'))
969 MAKE_SSTRING_SPACE (s, 1);
974 /* Returns 1 if the file is correctly protected against multiple
975 inclusion, setting *ifndef_line to the line number of the initial #ifndef
976 and setting *endif_line to the final #endif.
977 Otherwise return 0. */
980 check_protection (ifndef_line, endif_line)
981 int *ifndef_line, *endif_line;
984 int if_nesting = 1; /* Level of nesting of #if's */
985 char *protect_name = NULL; /* Identifier following initial #ifndef */
988 /* Skip initial white space (including comments). */
991 c = inf_skip_spaces (' ');
999 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1000 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
1003 /* So far so good: We've seen an initial #ifndef. */
1004 *ifndef_line = lineno;
1005 c = inf_scan_ident (&buf, inf_skip_spaces (c));
1006 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
1008 protect_name = xstrdup (buf.base);
1010 (void) INF_UNGET (c);
1011 c = inf_read_upto (&buf, '\n');
1018 c = inf_skip_spaces (' ');
1028 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1029 if (SSTRING_LENGTH (&buf) == 0)
1031 else if (!strcmp (buf.base, "ifndef")
1032 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1036 else if (!strcmp (buf.base, "endif"))
1039 if (if_nesting == 0)
1042 else if (!strcmp (buf.base, "else"))
1044 if (if_nesting == 1)
1047 else if (!strcmp (buf.base, "define"))
1049 if (if_nesting != 1)
1051 c = inf_skip_spaces (c);
1052 c = inf_scan_ident (&buf, c);
1053 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1059 if (c == '\n' || c == EOF)
1070 *endif_line = lineno;
1071 /* Skip final white space (including comments). */
1074 c = inf_skip_spaces (' ');
1092 #ifdef FIXPROTO_IGNORE_LIST
1100 register struct symbol_list *cur_symbols;
1102 if (argv[0] && argv[0][0])
1107 for (p = argv[0]; *p; p++)
1110 progname = progname ? progname+1 : argv[0];
1115 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1117 exit (FATAL_EXIT_CODE);
1120 inc_filename = argv[1];
1121 inc_filename_length = strlen (inc_filename);
1123 #ifdef FIXPROTO_IGNORE_LIST
1124 for (i = 0; files_to_ignore[i] != NULL; i++)
1126 char *ignore_name = files_to_ignore[i];
1127 int ignore_len = strlen (ignore_name);
1128 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1130 if (ignore_name[ignore_len-1] == '/'
1131 || inc_filename[ignore_len] == '\0')
1134 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1135 exit (SUCCESS_EXIT_CODE);
1142 if (strcmp (inc_filename, "sys/stat.h") == 0)
1143 special_file_handling = sys_stat_h;
1144 else if (strcmp (inc_filename, "errno.h") == 0)
1145 special_file_handling = errno_h, required_other++;
1146 else if (strcmp (inc_filename, "stdlib.h") == 0)
1147 special_file_handling = stdlib_h, required_other+=2;
1148 else if (strcmp (inc_filename, "stdio.h") == 0)
1149 special_file_handling = stdio_h;
1150 include_entry = std_include_table;
1151 while (include_entry->name != NULL
1152 && (include_entry->name == CONTINUED
1153 || strcmp (inc_filename, include_entry->name) != 0))
1156 if (include_entry->name != NULL)
1158 struct std_include_entry *entry;
1159 cur_symbol_table_size = 0;
1160 for (entry = include_entry; ;)
1163 add_symbols (entry->flags, entry->names);
1165 if (entry->name != CONTINUED)
1170 symbol_table[0].names = NULL;
1172 /* Count and mark the prototypes required for this include file. */
1173 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1176 if (cur_symbols->flags & MACRO_SYMBOL)
1178 cptr = cur_symbols->names;
1179 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1181 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1182 required_unseen_count++;
1184 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
1190 read_scan_file (argv[2], argc - 4, argv + 4);
1192 inf_fd = open (argv[2], O_RDONLY, 0666);
1195 fprintf (stderr, "%s: Cannot open '%s' for reading -",
1198 exit (FATAL_EXIT_CODE);
1200 if (fstat (inf_fd, &sbuf) < 0)
1202 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1204 exit (FATAL_EXIT_CODE);
1206 inf_size = sbuf.st_size;
1207 inf_buffer = (char *) xmalloc (inf_size + 2);
1208 inf_buffer[inf_size] = '\n';
1209 inf_buffer[inf_size + 1] = '\0';
1210 inf_limit = inf_buffer + inf_size;
1211 inf_ptr = inf_buffer;
1216 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1219 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1221 exit (FATAL_EXIT_CODE);
1225 inf_size -= to_read;
1233 /* If file doesn't end with '\n', add one. */
1234 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1238 outf = fopen (argv[3], "w");
1241 fprintf (stderr, "%s: Cannot open '%s' for writing -",
1244 exit (FATAL_EXIT_CODE);
1249 if (check_protection (&ifndef_line, &endif_line))
1251 lbrac_line = ifndef_line+1;
1252 rbrac_line = endif_line;
1260 /* Reset input file. */
1261 inf_ptr = inf_buffer;
1266 if (lineno == lbrac_line)
1268 if (lineno == rbrac_line)
1276 if (ISALPHA (c) || c == '_')
1278 c = inf_scan_ident (&buf, c);
1279 (void) INF_UNGET (c);
1280 fputs (buf.base, outf);
1281 fn = lookup_std_proto (buf.base, strlen (buf.base));
1282 /* We only want to edit the declaration matching the one
1283 seen by scan-decls, as there can be multiple
1284 declarations, selected by #ifdef __STDC__ or whatever. */
1285 if (fn && fn->partial && fn->partial->line_seen == lineno)
1287 c = inf_skip_spaces (' ');
1292 c = inf_skip_spaces (' ');
1295 fprintf (outf, " _PARAMS((%s))", fn->params);
1300 (void) INF_UNGET (c);
1304 fprintf (outf, " %c", c);
1326 /* Stub error functions. These replace cpperror.c,
1327 because we want to suppress error messages. */
1330 cpp_file_line_for_message (filename, line, column)
1337 fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1339 fprintf (stderr, "%s:%d: ", filename, line);
1343 cpp_print_containing_files (pfile)
1344 cpp_reader *pfile ATTRIBUTE_UNUSED;
1348 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1350 void cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
1354 char *arg1, *arg2, *arg3;
1358 else if (is_error > 1)
1359 pfile->errors = CPP_FATAL_LIMIT;
1363 fprintf (stderr, "warning: ");
1364 fprintf (stderr, msg, arg1, arg2, arg3);
1365 fprintf (stderr, "\n");
1372 fprintf (stderr, "%s: %s: ", progname, inc_filename);
1373 fprintf (stderr, str, arg);
1374 fprintf (stderr, "\n");
1375 exit (FATAL_EXIT_CODE);
1379 cpp_fatal (pfile, str, arg)
1380 cpp_reader *pfile ATTRIBUTE_UNUSED;
1387 cpp_pfatal_with_name (pfile, name)
1391 cpp_perror_with_name (pfile, name);
1392 exit (FATAL_EXIT_CODE);