1 /* fix-header.c - Make C header file suitable for C++.
2 Copyright (C) 1993, 1994, 1995, 1996 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 more conforming with ANSI/POSIX, and more suitable for 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 lust 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. */
79 #include "gansidecl.h"
85 extern void cpp_fatal ();
87 #if !__STDC__ && !defined(const)
88 #define const /* nothing */
94 int partial_count = 0;
97 /* We no longer need to add extern "C", because cpp implicitly
98 forces the standard include files to be treated as C. */
99 /*#define ADD_MISSING_EXTERN_C 1 */
101 #if ADD_MISSING_EXTERN_C
102 int missing_extern_C_count = 0;
105 #include "xsys-protos.h"
107 #ifdef FIXPROTO_IGNORE_LIST
108 /* This is a currently unused feature. */
110 /* List of files and directories to ignore.
111 A directory name (ending in '/') means ignore anything in that
112 directory. (It might be more efficient to do directory pruning
113 earlier in fixproto, but this is simpler and easier to customize.) */
115 static char *files_to_ignore[] = {
126 /* Certain standard files get extra treatment */
137 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
138 by an empty name (i.e. by "\0\0"). */
140 typedef const char* namelist;
142 /* The following macros provide the bits for symbol_flags. */
143 typedef int symbol_flags;
145 /* Used to mark names defined in the ANSI/ISO C standard. */
146 #define ANSI_SYMBOL 1
148 /* Used to mark names defined in the Posix.1 or Posix.2 standard. */
149 #define POSIX1_SYMBOL 2
150 #define POSIX2_SYMBOL 4
152 /* Used to mark names defined in X/Open Portability Guide. */
153 #define XOPEN_SYMBOL 8
154 /* Used to mark names defined in X/Open UNIX Extensions. */
155 #define XOPEN_EXTENDED_SYMBOL 16
157 /* Used to indicate names that are not functions */
158 #define MACRO_SYMBOL 512
165 #define SYMBOL_TABLE_SIZE 10
166 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
167 int cur_symbol_table_size;
170 add_symbols (flags, names)
174 symbol_table[cur_symbol_table_size].flags = flags;
175 symbol_table[cur_symbol_table_size].names = names;
176 cur_symbol_table_size++;
177 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
178 fatal ("too many calls to add_symbols");
179 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
182 struct std_include_entry {
188 const char NONE[] = ""; /* The empty namelist. */
190 /* Special name to indicate a continuation line in std_include_table. */
191 const char CONTINUED[] = "";
193 struct std_include_entry *include_entry;
195 struct std_include_entry std_include_table [] = {
196 { "ctype.h", ANSI_SYMBOL,
197 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
198 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
200 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
202 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
204 /* ANSI_SYMBOL is wrong, but ... */
205 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
206 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
207 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
208 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
209 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
211 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
213 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
214 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
216 /*{ "limit.h", ... provided by gcc }, */
218 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
220 { "math.h", ANSI_SYMBOL,
221 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
222 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
225 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
227 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
229 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
230 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
232 /* Left out signal() - its prototype is too complex for us!
233 Also left out "sigaction sigaddset sigdelset sigemptyset
234 sigfillset sigismember sigpending sigprocmask sigsuspend"
235 because these need sigset_t or struct sigaction.
236 Most systems that provide them will also declare them. */
237 { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
239 { "stdio.h", ANSI_SYMBOL,
240 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
241 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
242 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\00perror\0popen\0\
243 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
244 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
246 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
247 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
248 /* Should perhaps also handle NULL, EOF, ... ? */
250 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
251 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
252 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
253 Should perhaps also add NULL */
254 { "stdlib.h", ANSI_SYMBOL,
255 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
256 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
257 srand\0strtod\0strtol\0strtoul\0system\0" },
258 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
260 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
261 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
262 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
263 strtok\0strxfrm\0" },
264 /* Should perhaps also add NULL and size_t */
266 { "strings.h", XOPEN_EXTENDED_SYMBOL,
267 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
269 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
271 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
272 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
273 and many systems do have <sys/ioctl.h> but not <strops.h>. */
274 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
276 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
278 { "sys/stat.h", POSIX1_SYMBOL,
279 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
280 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
281 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
282 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
283 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
286 /* How do we handle fd_set? */
287 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
288 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
291 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
292 /* "sys/types.h" add types (not in old g++-include) */
294 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
296 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
297 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
298 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
299 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
301 { "tar.h", POSIX1_SYMBOL, NONE },
303 { "termios.h", POSIX1_SYMBOL,
304 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
306 { "time.h", ANSI_SYMBOL,
307 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
309 { "unistd.h", POSIX1_SYMBOL,
310 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
311 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
312 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
313 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
314 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
315 ttyname\0unlink\0write\0" },
316 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
317 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
318 "lockf\0gethostid\0gethostname\0readlink\0" },
320 { "utime.h", POSIX1_SYMBOL, "utime\0" },
325 enum special_file special_file_handling = no_special;
327 /* They are set if the corresponding macro has been seen. */
328 /* The following are only used when handling sys/stat.h */
329 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
330 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
331 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
332 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
333 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
334 int seen_S_IFREG = 0, seen_S_ISREG = 0;
335 /* The following are only used when handling errno.h */
337 /* The following are only used when handling stdlib.h */
338 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
340 /* Wrapper around free, to avoid prototype clashes. */
349 /* Avoid error if config defines abort as fancy_abort.
350 It's not worth "really" implementing this because ordinary
351 compiler users never run fix-header. */
359 #define obstack_chunk_alloc xmalloc
360 #define obstack_chunk_free xfree
361 struct obstack scan_file_obstack;
363 /* NOTE: If you edit this, also edit gen-protos.c !! */
365 lookup_std_proto (name, name_length)
369 int i = hashf (name, name_length, HASH_SIZE);
374 if (hash_tab[i] == 0)
376 fn = &std_protos[hash_tab[i]];
377 if (strlen (fn->fname) == name_length
378 && strncmp (fn->fname, name, name_length) == 0)
380 i = (i+1) % HASH_SIZE;
387 int inc_filename_length;
388 char *progname = "fix-header";
392 int lbrac_line, rbrac_line;
394 int required_unseen_count = 0;
395 int required_other = 0;
401 #if ADD_MISSING_EXTERN_C
402 if (missing_extern_C_count + required_unseen_count > 0)
403 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
408 fprintf (outf, "#ifndef _PARAMS\n");
409 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
410 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
411 fprintf (outf, "#else\n");
412 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
413 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
419 struct partial_proto *next;
420 char *fname; /* name of function */
421 char *rtype; /* return type */
426 struct partial_proto *partial_proto_list = NULL;
428 struct partial_proto required_dummy_proto, seen_dummy_proto;
429 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
430 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
431 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
432 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
435 recognized_macro (fname)
438 /* The original include file defines fname as a macro. */
439 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
441 /* Since fname is a macro, don't require a prototype for it. */
445 required_unseen_count--;
449 switch (special_file_handling)
452 if (strcmp (fname, "errno") == 0 && !seen_errno)
453 seen_errno = 1, required_other--;
456 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
457 seen_EXIT_FAILURE = 1, required_other--;
458 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
459 seen_EXIT_SUCCESS = 1, required_other--;
462 if (fname[0] == 'S' && fname[1] == '_')
464 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
465 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
466 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
467 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
468 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
469 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
470 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
471 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
472 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
473 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
474 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
475 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
481 recognized_extern (name, name_length, type, type_length)
484 int name_length, type_length;
486 switch (special_file_handling)
489 if (strcmp (name, "errno") == 0 && !seen_errno)
490 seen_errno = 1, required_other--;
495 /* Called by scan_decls if it saw a function definition for a function
496 named FNAME, with return type RTYPE, and argument list ARGS,
497 in source file FILE_SEEN on line LINE_SEEN.
498 KIND is 'I' for an inline function;
499 'F' if a normal function declaration preceded by 'extern "C"'
500 (or nested inside 'extern "C"' braces); or
501 'f' for other function declarations. */
504 recognized_function (fname, fname_length,
505 kind, rtype, rtype_length,
506 have_arg_list, file_seen, line_seen)
509 int kind; /* One of 'f' 'F' or 'I' */
516 struct partial_proto *partial;
519 #if ADD_MISSING_EXTERN_C
521 missing_extern_C_count++;
524 fn = lookup_std_proto (fname, fname_length);
526 /* Remove the function from the list of required function. */
530 required_unseen_count--;
534 /* If we have a full prototype, we're done. */
538 if (kind == 'I') /* don't edit inline function */
541 /* If the partial prototype was included from some other file,
542 we don't need to patch it up (in this run). */
543 i = strlen (file_seen);
544 if (i < inc_filename_length
545 || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
550 if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
553 /* We only have a partial function declaration,
554 so remember that we have to add a complete prototype. */
556 partial = (struct partial_proto*)
557 obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
558 partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
559 bcopy (fname, partial->fname, fname_length);
560 partial->fname[fname_length] = 0;
561 partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
562 sprintf (partial->rtype, "%.*s", rtype_length, rtype);
563 partial->line_seen = line_seen;
565 fn->partial = partial;
566 partial->next = partial_proto_list;
567 partial_proto_list = partial;
570 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
571 inc_filename, partial->fname);
575 /* For any name in NAMES that is defined as a macro,
576 call recognized_macro on it. */
579 check_macro_names (pfile, names)
585 if (cpp_lookup (pfile, names, -1, -1))
586 recognized_macro (names);
587 names += strlen (names) + 1;
592 read_scan_file (in_fname, argc, argv)
598 cpp_options scan_options;
601 register struct symbol_list *cur_symbols;
603 obstack_init (&scan_file_obstack);
605 cpp_reader_init (&scan_in);
606 scan_in.data = &scan_options;
607 cpp_options_init (&scan_options);
608 i = cpp_handle_options (&scan_in, argc, argv);
609 if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
610 cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
611 if (CPP_FATAL_ERRORS (&scan_in))
612 exit (FATAL_EXIT_CODE);
614 if (! cpp_start_read (&scan_in, in_fname))
615 exit (FATAL_EXIT_CODE);
616 CPP_OPTIONS (&scan_in)->no_line_commands = 1;
618 scan_decls (&scan_in, argc, argv);
619 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
620 check_macro_names (&scan_in, cur_symbols->names);
622 if (verbose && (scan_in.errors + warnings) > 0)
623 fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
624 inc_filename, scan_in.errors, warnings);
628 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
629 If so, those functions are also required. */
630 if (special_file_handling == stdio_h
631 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
633 static char getchar_call[] = "getchar();";
635 cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
636 int old_written = CPP_WRITTEN (&scan_in);
639 /* Scan the macro expansion of "getchar();". */
642 enum cpp_token token = cpp_get_token (&scan_in);
643 int length = CPP_WRITTEN (&scan_in) - old_written;
644 CPP_SET_WRITTEN (&scan_in, old_written);
645 if (token == CPP_EOF) /* Should not happen ... */
647 if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
649 cpp_pop_buffer (&scan_in);
652 if (token == CPP_NAME && length == 7
653 && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
658 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
659 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
661 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
663 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
664 if (need_filbuf + need_flsbuf)
670 SET_REQUIRED (flsbuf_fn);
671 if (need_flsbuf + need_filbuf == 2)
672 new_list = "_filbuf\0_flsbuf\0";
673 else if (need_flsbuf)
674 new_list = "_flsbuf\0";
675 else /* if (need_flsbuf) */
676 new_list = "_filbuf\0";
677 add_symbols (ANSI_SYMBOL, new_list);
678 required_unseen_count += need_filbuf + need_flsbuf;
683 if (required_unseen_count + partial_count + required_other
684 #if ADD_MISSING_EXTERN_C
685 + missing_extern_C_count
690 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
694 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
697 if (required_unseen_count)
698 fprintf (stderr, "%s: %d missing function declarations.\n",
699 inc_filename, required_unseen_count);
701 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
702 inc_filename, partial_count);
703 #if ADD_MISSING_EXTERN_C
704 if (missing_extern_C_count)
706 "%s: %d declarations not protected by extern \"C\".\n",
707 inc_filename, missing_extern_C_count);
717 register struct symbol_list *cur_symbols;
719 if (required_unseen_count)
721 #ifdef NO_IMPLICIT_EXTERN_C
722 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
726 /* Now we print out prototypes for those functions that we haven't seen. */
727 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
729 int if_was_emitted = 0;
731 cptr = cur_symbols->names;
732 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
734 int macro_protect = 0;
736 if (cur_symbols->flags & MACRO_SYMBOL)
739 fn = lookup_std_proto (cptr, name_len);
740 if (fn == NULL || !REQUIRED (fn))
745 /* what about curses. ??? or _flsbuf/_filbuf ??? */
746 if (cur_symbols->flags & ANSI_SYMBOL)
748 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
749 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
751 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
752 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
753 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
754 else if (cur_symbols->flags & XOPEN_SYMBOL)
757 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
758 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
760 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
763 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
764 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
768 fatal ("internal error for function %s", fn->fname);
773 /* In the case of memmove, protect in case the application
774 defines it as a macro before including the header. */
775 if (!strcmp (fn->fname, "memmove")
776 || !strcmp (fn->fname, "vprintf")
777 || !strcmp (fn->fname, "vfprintf")
778 || !strcmp (fn->fname, "vsprintf")
779 || !strcmp (fn->fname, "rewinddir"))
783 fprintf (outf, "#ifndef %s\n", fn->fname);
784 fprintf (outf, "extern %s %s (%s);\n",
785 fn->rtype, fn->fname, fn->params);
787 fprintf (outf, "#endif\n");
791 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
793 if (required_unseen_count)
795 #ifdef NO_IMPLICIT_EXTERN_C
796 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
800 switch (special_file_handling)
804 fprintf (outf, "extern int errno;\n");
807 if (!seen_EXIT_FAILURE)
808 fprintf (outf, "#define EXIT_FAILURE 1\n");
809 if (!seen_EXIT_SUCCESS)
810 fprintf (outf, "#define EXIT_SUCCESS 0\n");
813 if (!seen_S_ISBLK && seen_S_IFBLK)
815 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
816 if (!seen_S_ISCHR && seen_S_IFCHR)
818 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
819 if (!seen_S_ISDIR && seen_S_IFDIR)
821 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
822 if (!seen_S_ISFIFO && seen_S_IFIFO)
824 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
825 if (!seen_S_ISLNK && seen_S_IFLNK)
827 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
828 if (!seen_S_ISREG && seen_S_IFREG)
830 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
835 #if ADD_MISSING_EXTERN_C
836 if (missing_extern_C_count + required_unseen_count > 0)
837 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
845 char *copy = (char *) xmalloc (strlen (str) + 1);
850 /* Returns 1 iff the file is properly protected from multiple inclusion:
857 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char*)inf_ptr++ : EOF)
858 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
866 if (c == ' ' || c == '\t')
884 source_lineno++, lineno++;
887 else if ((c = INF_GET ()) == '/')
897 /* Read into STR from inf_buffer upto DELIM. */
900 inf_read_upto (str, delim)
908 if (ch == EOF || ch == delim)
910 SSTRING_PUT (str, ch);
912 MAKE_SSTRING_SPACE (str, 1);
918 inf_scan_ident (s, c)
923 if (isalpha (c) || c == '_')
929 if (c == EOF || !(isalnum (c) || c == '_'))
933 MAKE_SSTRING_SPACE (s, 1);
938 /* Returns 1 if the file is correctly protected against multiple
939 inclusion, setting *ifndef_line to the line number of the initial #ifndef
940 and setting *endif_line to the final #endif.
941 Otherwise return 0. */
944 check_protection (ifndef_line, endif_line)
945 int *ifndef_line, *endif_line;
948 int if_nesting = 1; /* Level of nesting of #if's */
949 char *protect_name = NULL; /* Identifier following initial #ifndef */
952 /* Skip initial white space (including comments). */
955 c = inf_skip_spaces (' ');
963 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
964 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
967 /* So far so good: We've seen an initial #ifndef. */
968 *ifndef_line = lineno;
969 c = inf_scan_ident (&buf, inf_skip_spaces (c));
970 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
972 protect_name = xstrdup (buf.base);
975 c = inf_read_upto (&buf, '\n');
982 c = inf_skip_spaces (' ');
992 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
993 if (SSTRING_LENGTH (&buf) == 0)
995 else if (!strcmp (buf.base, "ifndef")
996 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1000 else if (!strcmp (buf.base, "endif"))
1003 if (if_nesting == 0)
1006 else if (!strcmp (buf.base, "else"))
1008 if (if_nesting == 1)
1011 else if (!strcmp (buf.base, "define"))
1013 if (if_nesting != 1)
1015 c = inf_skip_spaces (c);
1016 c = inf_scan_ident (&buf, c);
1017 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1023 if (c == '\n' || c == EOF)
1034 *endif_line = lineno;
1035 /* Skip final white space (including comments). */
1038 c = inf_skip_spaces (' ');
1057 const char *cptr, **pptr;
1062 register struct symbol_list *cur_symbols;
1064 if (argv[0] && argv[0][0])
1069 for (p = argv[0]; *p; p++)
1072 progname = progname ? progname+1 : argv[0];
1077 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1082 inc_filename = argv[1];
1083 inc_filename_length = strlen (inc_filename);
1085 #ifdef FIXPROTO_IGNORE_LIST
1086 for (i = 0; files_to_ignore[i] != NULL; i++)
1088 char *ignore_name = files_to_ignore[i];
1089 int ignore_len = strlen (ignore_name);
1090 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1092 if (ignore_name[ignore_len-1] == '/'
1093 || inc_filename[ignore_len] == '\0')
1096 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1104 if (strcmp (inc_filename, "sys/stat.h") == 0)
1105 special_file_handling = sys_stat_h;
1106 else if (strcmp (inc_filename, "errno.h") == 0)
1107 special_file_handling = errno_h, required_other++;
1108 else if (strcmp (inc_filename, "stdlib.h") == 0)
1109 special_file_handling = stdlib_h, required_other+=2;
1110 else if (strcmp (inc_filename, "stdio.h") == 0)
1111 special_file_handling = stdio_h;
1112 include_entry = std_include_table;
1113 while (include_entry->name != NULL
1114 && (include_entry->name == CONTINUED
1115 || strcmp (inc_filename, include_entry->name) != 0))
1118 if (include_entry->name != NULL)
1120 struct std_include_entry *entry;
1121 cur_symbol_table_size = 0;
1122 for (entry = include_entry; ;)
1124 add_symbols (entry->flags, entry->names);
1126 if (entry->name != CONTINUED)
1131 symbol_table[0].names = NULL;
1133 /* Count and mark the prototypes required for this include file. */
1134 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1137 if (cur_symbols->flags & MACRO_SYMBOL)
1139 cptr = cur_symbols->names;
1140 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1142 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1143 required_unseen_count++;
1145 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
1151 read_scan_file (argv[2], argc - 4, argv + 4);
1153 inf_fd = open (argv[2], O_RDONLY, 0666);
1156 fprintf (stderr, "%s: Cannot open '%s' for reading -",
1161 if (fstat (inf_fd, &sbuf) < 0)
1163 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1167 inf_size = sbuf.st_size;
1168 inf_buffer = (char*) xmalloc (inf_size + 2);
1169 inf_buffer[inf_size] = '\n';
1170 inf_buffer[inf_size + 1] = '\0';
1171 inf_limit = inf_buffer + inf_size;
1172 inf_ptr = inf_buffer;
1177 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1180 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1186 inf_size -= to_read;
1194 /* If file doesn't end with '\n', add one. */
1195 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1199 outf = fopen (argv[3], "w");
1202 fprintf (stderr, "%s: Cannot open '%s' for writing -",
1210 if (check_protection (&ifndef_line, &endif_line))
1212 lbrac_line = ifndef_line+1;
1213 rbrac_line = endif_line;
1221 /* Reset input file. */
1222 inf_ptr = inf_buffer;
1227 if (lineno == lbrac_line)
1229 if (lineno == rbrac_line)
1237 if (isalpha (c) || c == '_')
1239 c = inf_scan_ident (&buf, c);
1241 fputs (buf.base, outf);
1242 fn = lookup_std_proto (buf.base, strlen (buf.base));
1243 /* We only want to edit the declaration matching the one
1244 seen by scan-decls, as there can be multiple
1245 declarations, selected by #ifdef __STDC__ or whatever. */
1246 if (fn && fn->partial && fn->partial->line_seen == lineno)
1248 c = inf_skip_spaces (' ');
1253 c = inf_skip_spaces (' ');
1256 fprintf (outf, " _PARAMS((%s))", fn->params);
1265 fprintf (outf, " %c", c);
1287 /* Stub error functions. These replace cpperror.c,
1288 because we want to suppress error messages. */
1291 cpp_file_line_for_message (pfile, filename, line, column)
1299 fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1301 fprintf (stderr, "%s:%d: ", filename, line);
1305 cpp_print_containing_files (pfile)
1310 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1311 void cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
1315 char *arg1, *arg2, *arg3;
1319 else if (is_error > 1)
1320 pfile->errors = CPP_FATAL_LIMIT;
1324 fprintf (stderr, "warning: ");
1325 fprintf (stderr, msg, arg1, arg2, arg3);
1326 fprintf (stderr, "\n");
1333 fprintf (stderr, "%s: %s: ", progname, inc_filename);
1334 fprintf (stderr, str, arg);
1335 fprintf (stderr, "\n");
1336 exit (FATAL_EXIT_CODE);
1340 cpp_fatal (pfile, str, arg)
1348 cpp_pfatal_with_name (pfile, name)
1352 cpp_perror_with_name (pfile, name);
1353 exit (FATAL_EXIT_CODE);