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"
84 extern void cpp_fatal ();
86 #if !__STDC__ && !defined(const)
87 #define const /* nothing */
93 int partial_count = 0;
96 /* We no longer need to add extern "C", because cpp implicitly
97 forces the standard include files to be treated as C. */
98 /*#define ADD_MISSING_EXTERN_C 1 */
100 #if ADD_MISSING_EXTERN_C
101 int missing_extern_C_count = 0;
104 #include "xsys-protos.h"
106 #ifdef FIXPROTO_IGNORE_LIST
107 /* This is a currently unused feature. */
109 /* List of files and directories to ignore.
110 A directory name (ending in '/') means ignore anything in that
111 directory. (It might be more efficient to do directory pruning
112 earlier in fixproto, but this is simpler and easier to customize.) */
114 static char *files_to_ignore[] = {
125 /* Certain standard files get extra treatment */
136 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
137 by an empty name (i.e. by "\0\0"). */
139 typedef const char *namelist;
141 /* The following macros provide the bits for symbol_flags. */
142 typedef int symbol_flags;
144 /* Used to mark names defined in the ANSI/ISO C standard. */
145 #define ANSI_SYMBOL 1
147 /* We no longer massage include files for POSIX or XOPEN symbols,
148 as there are now several versions of the POSIX and XOPEN standards,
149 and it would be a maintenance nightmare for us to track them all.
150 Better to be compatible with the system include files. */
151 /*#define ADD_MISSING_POSIX 1 */
152 /*#define ADD_MISSING_XOPEN 1 */
154 #if ADD_MISSING_POSIX
155 /* Used to mark names defined in the Posix.1 or Posix.2 standard. */
156 #define POSIX1_SYMBOL 2
157 #define POSIX2_SYMBOL 4
159 #define POSIX1_SYMBOL 0
160 #define POSIX2_SYMBOL 0
163 #if ADD_MISSING_XOPEN
164 /* Used to mark names defined in X/Open Portability Guide. */
165 #define XOPEN_SYMBOL 8
166 /* Used to mark names defined in X/Open UNIX Extensions. */
167 #define XOPEN_EXTENDED_SYMBOL 16
169 #define XOPEN_SYMBOL 0
170 #define XOPEN_EXTENDED_SYMBOL 0
173 /* Used to indicate names that are not functions */
174 #define MACRO_SYMBOL 512
181 #define SYMBOL_TABLE_SIZE 10
182 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
183 int cur_symbol_table_size;
186 add_symbols (flags, names)
190 symbol_table[cur_symbol_table_size].flags = flags;
191 symbol_table[cur_symbol_table_size].names = names;
192 cur_symbol_table_size++;
193 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
194 fatal ("too many calls to add_symbols");
195 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
198 struct std_include_entry {
204 const char NONE[] = ""; /* The empty namelist. */
206 /* Special name to indicate a continuation line in std_include_table. */
207 const char CONTINUED[] = "";
209 struct std_include_entry *include_entry;
211 struct std_include_entry std_include_table [] = {
212 { "ctype.h", ANSI_SYMBOL,
213 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
214 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
216 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
218 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
220 /* ANSI_SYMBOL is wrong, but ... */
221 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
222 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
223 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
224 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
225 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
227 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
229 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
230 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
232 /*{ "limit.h", ... provided by gcc }, */
234 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
236 { "math.h", ANSI_SYMBOL,
237 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
238 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
241 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
243 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
245 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
246 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
248 /* Left out signal() - its prototype is too complex for us!
249 Also left out "sigaction sigaddset sigdelset sigemptyset
250 sigfillset sigismember sigpending sigprocmask sigsuspend"
251 because these need sigset_t or struct sigaction.
252 Most systems that provide them will also declare them. */
253 { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
255 { "stdio.h", ANSI_SYMBOL,
256 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
257 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
258 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
259 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
260 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
262 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
263 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
264 /* Should perhaps also handle NULL, EOF, ... ? */
266 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
267 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
268 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
269 Should perhaps also add NULL */
270 { "stdlib.h", ANSI_SYMBOL,
271 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
272 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
273 srand\0strtod\0strtol\0strtoul\0system\0" },
274 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
276 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
277 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
278 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
279 strtok\0strxfrm\0" },
280 /* Should perhaps also add NULL and size_t */
282 { "strings.h", XOPEN_EXTENDED_SYMBOL,
283 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
285 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
287 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
288 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
289 and many systems do have <sys/ioctl.h> but not <strops.h>. */
290 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
292 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
294 { "sys/stat.h", POSIX1_SYMBOL,
295 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
296 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
297 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
298 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
299 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
302 /* How do we handle fd_set? */
303 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
304 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
307 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
308 /* "sys/types.h" add types (not in old g++-include) */
310 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
312 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
313 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
314 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
315 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
317 { "tar.h", POSIX1_SYMBOL, NONE },
319 { "termios.h", POSIX1_SYMBOL,
320 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
322 { "time.h", ANSI_SYMBOL,
323 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
325 { "unistd.h", POSIX1_SYMBOL,
326 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
327 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
328 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
329 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
330 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
331 ttyname\0unlink\0write\0" },
332 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
333 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
334 "lockf\0gethostid\0gethostname\0readlink\0" },
336 { "utime.h", POSIX1_SYMBOL, "utime\0" },
341 enum special_file special_file_handling = no_special;
343 /* They are set if the corresponding macro has been seen. */
344 /* The following are only used when handling sys/stat.h */
345 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
346 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
347 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
348 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
349 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
350 int seen_S_IFREG = 0, seen_S_ISREG = 0;
351 /* The following are only used when handling errno.h */
353 /* The following are only used when handling stdlib.h */
354 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
356 /* Wrapper around free, to avoid prototype clashes. */
365 /* Avoid error if config defines abort as fancy_abort.
366 It's not worth "really" implementing this because ordinary
367 compiler users never run fix-header. */
375 #define obstack_chunk_alloc xmalloc
376 #define obstack_chunk_free xfree
377 struct obstack scan_file_obstack;
379 /* NOTE: If you edit this, also edit gen-protos.c !! */
382 lookup_std_proto (name, name_length)
386 int i = hashf (name, name_length, HASH_SIZE);
391 if (hash_tab[i] == 0)
393 fn = &std_protos[hash_tab[i]];
394 if (strlen (fn->fname) == name_length
395 && strncmp (fn->fname, name, name_length) == 0)
397 i = (i+1) % HASH_SIZE;
404 int inc_filename_length;
405 char *progname = "fix-header";
409 int lbrac_line, rbrac_line;
411 int required_unseen_count = 0;
412 int required_other = 0;
418 #if ADD_MISSING_EXTERN_C
419 if (missing_extern_C_count + required_unseen_count > 0)
420 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
425 fprintf (outf, "#ifndef _PARAMS\n");
426 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
427 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
428 fprintf (outf, "#else\n");
429 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
430 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
436 struct partial_proto *next;
437 char *fname; /* name of function */
438 char *rtype; /* return type */
443 struct partial_proto *partial_proto_list = NULL;
445 struct partial_proto required_dummy_proto, seen_dummy_proto;
446 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
447 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
448 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
449 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
452 recognized_macro (fname)
455 /* The original include file defines fname as a macro. */
456 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
458 /* Since fname is a macro, don't require a prototype for it. */
462 required_unseen_count--;
466 switch (special_file_handling)
469 if (strcmp (fname, "errno") == 0 && !seen_errno)
470 seen_errno = 1, required_other--;
473 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
474 seen_EXIT_FAILURE = 1, required_other--;
475 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
476 seen_EXIT_SUCCESS = 1, required_other--;
479 if (fname[0] == 'S' && fname[1] == '_')
481 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
482 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
483 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
484 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
485 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
486 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
487 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
488 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
489 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
490 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
491 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
492 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
502 recognized_extern (name, name_length, type, type_length)
505 int name_length, type_length;
507 switch (special_file_handling)
510 if (name_length == 5 && strncmp (name, "errno", 5) == 0 && !seen_errno)
511 seen_errno = 1, required_other--;
519 /* Called by scan_decls if it saw a function definition for a function
520 named FNAME, with return type RTYPE, and argument list ARGS,
521 in source file FILE_SEEN on line LINE_SEEN.
522 KIND is 'I' for an inline function;
523 'F' if a normal function declaration preceded by 'extern "C"'
524 (or nested inside 'extern "C"' braces); or
525 'f' for other function declarations. */
528 recognized_function (fname, fname_length,
529 kind, rtype, rtype_length,
530 have_arg_list, file_seen, line_seen)
533 int kind; /* One of 'f' 'F' or 'I' */
540 struct partial_proto *partial;
543 #if ADD_MISSING_EXTERN_C
545 missing_extern_C_count++;
548 fn = lookup_std_proto (fname, fname_length);
550 /* Remove the function from the list of required function. */
554 required_unseen_count--;
558 /* If we have a full prototype, we're done. */
562 if (kind == 'I') /* don't edit inline function */
565 /* If the partial prototype was included from some other file,
566 we don't need to patch it up (in this run). */
567 i = strlen (file_seen);
568 if (i < inc_filename_length
569 || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
574 if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
577 /* We only have a partial function declaration,
578 so remember that we have to add a complete prototype. */
580 partial = (struct partial_proto *)
581 obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
582 partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
583 bcopy (fname, partial->fname, fname_length);
584 partial->fname[fname_length] = 0;
585 partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
586 sprintf (partial->rtype, "%.*s", rtype_length, rtype);
587 partial->line_seen = line_seen;
589 fn->partial = partial;
590 partial->next = partial_proto_list;
591 partial_proto_list = partial;
594 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
595 inc_filename, partial->fname);
599 /* For any name in NAMES that is defined as a macro,
600 call recognized_macro on it. */
603 check_macro_names (pfile, names)
609 if (cpp_lookup (pfile, names, -1, -1))
610 recognized_macro (names);
611 names += strlen (names) + 1;
616 read_scan_file (in_fname, argc, argv)
622 cpp_options scan_options;
625 register struct symbol_list *cur_symbols;
627 obstack_init (&scan_file_obstack);
629 cpp_reader_init (&scan_in);
630 scan_in.data = &scan_options;
631 cpp_options_init (&scan_options);
632 i = cpp_handle_options (&scan_in, argc, argv);
633 if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
634 cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
635 if (CPP_FATAL_ERRORS (&scan_in))
636 exit (FATAL_EXIT_CODE);
638 if (! cpp_start_read (&scan_in, in_fname))
639 exit (FATAL_EXIT_CODE);
640 CPP_OPTIONS (&scan_in)->no_line_commands = 1;
642 scan_decls (&scan_in, argc, argv);
643 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
644 check_macro_names (&scan_in, cur_symbols->names);
646 if (verbose && (scan_in.errors + warnings) > 0)
647 fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
648 inc_filename, scan_in.errors, warnings);
650 exit (SUCCESS_EXIT_CODE);
652 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
653 If so, those functions are also required. */
654 if (special_file_handling == stdio_h
655 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
657 static char getchar_call[] = "getchar();";
659 = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
660 int old_written = CPP_WRITTEN (&scan_in);
663 /* Scan the macro expansion of "getchar();". */
666 enum cpp_token token = cpp_get_token (&scan_in);
667 int length = CPP_WRITTEN (&scan_in) - old_written;
668 CPP_SET_WRITTEN (&scan_in, old_written);
669 if (token == CPP_EOF) /* Should not happen ... */
671 if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
673 cpp_pop_buffer (&scan_in);
676 if (token == CPP_NAME && length == 7
677 && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
682 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
683 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
685 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
687 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
688 if (need_filbuf + need_flsbuf)
694 SET_REQUIRED (flsbuf_fn);
695 if (need_flsbuf + need_filbuf == 2)
696 new_list = "_filbuf\0_flsbuf\0";
697 else if (need_flsbuf)
698 new_list = "_flsbuf\0";
699 else /* if (need_flsbuf) */
700 new_list = "_filbuf\0";
701 add_symbols (ANSI_SYMBOL, new_list);
702 required_unseen_count += need_filbuf + need_flsbuf;
707 if (required_unseen_count + partial_count + required_other
708 #if ADD_MISSING_EXTERN_C
709 + missing_extern_C_count
714 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
715 exit (SUCCESS_EXIT_CODE);
718 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
721 if (required_unseen_count)
722 fprintf (stderr, "%s: %d missing function declarations.\n",
723 inc_filename, required_unseen_count);
725 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
726 inc_filename, partial_count);
727 #if ADD_MISSING_EXTERN_C
728 if (missing_extern_C_count)
730 "%s: %d declarations not protected by extern \"C\".\n",
731 inc_filename, missing_extern_C_count);
741 register struct symbol_list *cur_symbols;
743 if (required_unseen_count)
745 #ifdef NO_IMPLICIT_EXTERN_C
746 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
750 /* Now we print out prototypes for those functions that we haven't seen. */
751 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
753 int if_was_emitted = 0;
755 cptr = cur_symbols->names;
756 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
758 int macro_protect = 0;
760 if (cur_symbols->flags & MACRO_SYMBOL)
763 fn = lookup_std_proto (cptr, name_len);
764 if (fn == NULL || !REQUIRED (fn))
769 /* what about curses. ??? or _flsbuf/_filbuf ??? */
770 if (cur_symbols->flags & ANSI_SYMBOL)
772 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
773 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
775 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
776 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
777 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
778 else if (cur_symbols->flags & XOPEN_SYMBOL)
781 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
782 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
784 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
787 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
788 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
792 fatal ("internal error for function %s", fn->fname);
797 /* In the case of memmove, protect in case the application
798 defines it as a macro before including the header. */
799 if (!strcmp (fn->fname, "memmove")
800 || !strcmp (fn->fname, "vprintf")
801 || !strcmp (fn->fname, "vfprintf")
802 || !strcmp (fn->fname, "vsprintf")
803 || !strcmp (fn->fname, "rewinddir"))
807 fprintf (outf, "#ifndef %s\n", fn->fname);
808 fprintf (outf, "extern %s %s (%s);\n",
809 fn->rtype, fn->fname, fn->params);
811 fprintf (outf, "#endif\n");
815 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
817 if (required_unseen_count)
819 #ifdef NO_IMPLICIT_EXTERN_C
820 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
824 switch (special_file_handling)
828 fprintf (outf, "extern int errno;\n");
831 if (!seen_EXIT_FAILURE)
832 fprintf (outf, "#define EXIT_FAILURE 1\n");
833 if (!seen_EXIT_SUCCESS)
834 fprintf (outf, "#define EXIT_SUCCESS 0\n");
837 if (!seen_S_ISBLK && seen_S_IFBLK)
839 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
840 if (!seen_S_ISCHR && seen_S_IFCHR)
842 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
843 if (!seen_S_ISDIR && seen_S_IFDIR)
845 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
846 if (!seen_S_ISFIFO && seen_S_IFIFO)
848 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
849 if (!seen_S_ISLNK && seen_S_IFLNK)
851 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
852 if (!seen_S_ISREG && seen_S_IFREG)
854 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
862 #if ADD_MISSING_EXTERN_C
863 if (missing_extern_C_count + required_unseen_count > 0)
864 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
872 char *copy = (char *) xmalloc (strlen (str) + 1);
877 /* Returns 1 iff the file is properly protected from multiple inclusion:
884 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
885 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
893 if (c == ' ' || c == '\t')
900 (void) INF_UNGET (c);
911 source_lineno++, lineno++;
914 else if ((c = INF_GET ()) == '/')
924 /* Read into STR from inf_buffer upto DELIM. */
927 inf_read_upto (str, delim)
935 if (ch == EOF || ch == delim)
937 SSTRING_PUT (str, ch);
939 MAKE_SSTRING_SPACE (str, 1);
945 inf_scan_ident (s, c)
950 if (isalpha (c) || c == '_')
956 if (c == EOF || !(isalnum (c) || c == '_'))
960 MAKE_SSTRING_SPACE (s, 1);
965 /* Returns 1 if the file is correctly protected against multiple
966 inclusion, setting *ifndef_line to the line number of the initial #ifndef
967 and setting *endif_line to the final #endif.
968 Otherwise return 0. */
971 check_protection (ifndef_line, endif_line)
972 int *ifndef_line, *endif_line;
975 int if_nesting = 1; /* Level of nesting of #if's */
976 char *protect_name = NULL; /* Identifier following initial #ifndef */
979 /* Skip initial white space (including comments). */
982 c = inf_skip_spaces (' ');
990 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
991 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
994 /* So far so good: We've seen an initial #ifndef. */
995 *ifndef_line = lineno;
996 c = inf_scan_ident (&buf, inf_skip_spaces (c));
997 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
999 protect_name = xstrdup (buf.base);
1001 (void) INF_UNGET (c);
1002 c = inf_read_upto (&buf, '\n');
1009 c = inf_skip_spaces (' ');
1019 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1020 if (SSTRING_LENGTH (&buf) == 0)
1022 else if (!strcmp (buf.base, "ifndef")
1023 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1027 else if (!strcmp (buf.base, "endif"))
1030 if (if_nesting == 0)
1033 else if (!strcmp (buf.base, "else"))
1035 if (if_nesting == 1)
1038 else if (!strcmp (buf.base, "define"))
1040 if (if_nesting != 1)
1042 c = inf_skip_spaces (c);
1043 c = inf_scan_ident (&buf, c);
1044 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1050 if (c == '\n' || c == EOF)
1061 *endif_line = lineno;
1062 /* Skip final white space (including comments). */
1065 c = inf_skip_spaces (' ');
1083 #ifdef FIXPROTO_IGNORE_LIST
1091 register struct symbol_list *cur_symbols;
1093 if (argv[0] && argv[0][0])
1098 for (p = argv[0]; *p; p++)
1101 progname = progname ? progname+1 : argv[0];
1106 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1108 exit (FATAL_EXIT_CODE);
1111 inc_filename = argv[1];
1112 inc_filename_length = strlen (inc_filename);
1114 #ifdef FIXPROTO_IGNORE_LIST
1115 for (i = 0; files_to_ignore[i] != NULL; i++)
1117 char *ignore_name = files_to_ignore[i];
1118 int ignore_len = strlen (ignore_name);
1119 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1121 if (ignore_name[ignore_len-1] == '/'
1122 || inc_filename[ignore_len] == '\0')
1125 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1126 exit (SUCCESS_EXIT_CODE);
1133 if (strcmp (inc_filename, "sys/stat.h") == 0)
1134 special_file_handling = sys_stat_h;
1135 else if (strcmp (inc_filename, "errno.h") == 0)
1136 special_file_handling = errno_h, required_other++;
1137 else if (strcmp (inc_filename, "stdlib.h") == 0)
1138 special_file_handling = stdlib_h, required_other+=2;
1139 else if (strcmp (inc_filename, "stdio.h") == 0)
1140 special_file_handling = stdio_h;
1141 include_entry = std_include_table;
1142 while (include_entry->name != NULL
1143 && (include_entry->name == CONTINUED
1144 || strcmp (inc_filename, include_entry->name) != 0))
1147 if (include_entry->name != NULL)
1149 struct std_include_entry *entry;
1150 cur_symbol_table_size = 0;
1151 for (entry = include_entry; ;)
1154 add_symbols (entry->flags, entry->names);
1156 if (entry->name != CONTINUED)
1161 symbol_table[0].names = NULL;
1163 /* Count and mark the prototypes required for this include file. */
1164 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1167 if (cur_symbols->flags & MACRO_SYMBOL)
1169 cptr = cur_symbols->names;
1170 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1172 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1173 required_unseen_count++;
1175 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
1181 read_scan_file (argv[2], argc - 4, argv + 4);
1183 inf_fd = open (argv[2], O_RDONLY, 0666);
1186 fprintf (stderr, "%s: Cannot open '%s' for reading -",
1189 exit (FATAL_EXIT_CODE);
1191 if (fstat (inf_fd, &sbuf) < 0)
1193 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1195 exit (FATAL_EXIT_CODE);
1197 inf_size = sbuf.st_size;
1198 inf_buffer = (char *) xmalloc (inf_size + 2);
1199 inf_buffer[inf_size] = '\n';
1200 inf_buffer[inf_size + 1] = '\0';
1201 inf_limit = inf_buffer + inf_size;
1202 inf_ptr = inf_buffer;
1207 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1210 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1212 exit (FATAL_EXIT_CODE);
1216 inf_size -= to_read;
1224 /* If file doesn't end with '\n', add one. */
1225 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1229 outf = fopen (argv[3], "w");
1232 fprintf (stderr, "%s: Cannot open '%s' for writing -",
1235 exit (FATAL_EXIT_CODE);
1240 if (check_protection (&ifndef_line, &endif_line))
1242 lbrac_line = ifndef_line+1;
1243 rbrac_line = endif_line;
1251 /* Reset input file. */
1252 inf_ptr = inf_buffer;
1257 if (lineno == lbrac_line)
1259 if (lineno == rbrac_line)
1267 if (isalpha (c) || c == '_')
1269 c = inf_scan_ident (&buf, c);
1270 (void) INF_UNGET (c);
1271 fputs (buf.base, outf);
1272 fn = lookup_std_proto (buf.base, strlen (buf.base));
1273 /* We only want to edit the declaration matching the one
1274 seen by scan-decls, as there can be multiple
1275 declarations, selected by #ifdef __STDC__ or whatever. */
1276 if (fn && fn->partial && fn->partial->line_seen == lineno)
1278 c = inf_skip_spaces (' ');
1283 c = inf_skip_spaces (' ');
1286 fprintf (outf, " _PARAMS((%s))", fn->params);
1291 (void) INF_UNGET (c);
1295 fprintf (outf, " %c", c);
1317 /* Stub error functions. These replace cpperror.c,
1318 because we want to suppress error messages. */
1321 cpp_file_line_for_message (filename, line, column)
1328 fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1330 fprintf (stderr, "%s:%d: ", filename, line);
1334 cpp_print_containing_files (pfile)
1339 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1341 void cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
1345 char *arg1, *arg2, *arg3;
1349 else if (is_error > 1)
1350 pfile->errors = CPP_FATAL_LIMIT;
1354 fprintf (stderr, "warning: ");
1355 fprintf (stderr, msg, arg1, arg2, arg3);
1356 fprintf (stderr, "\n");
1363 fprintf (stderr, "%s: %s: ", progname, inc_filename);
1364 fprintf (stderr, str, arg);
1365 fprintf (stderr, "\n");
1366 exit (FATAL_EXIT_CODE);
1370 cpp_fatal (pfile, str, arg)
1378 cpp_pfatal_with_name (pfile, name)
1382 cpp_perror_with_name (pfile, name);
1383 exit (FATAL_EXIT_CODE);