1 /* fix-header.c - Make C header file suitable for C++.
2 Copyright (C) 1993, 94-99, 2000 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. */
79 static void v_fatal PARAMS ((const char *, va_list)) ATTRIBUTE_NORETURN;
80 static void fatal PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
85 int partial_count = 0;
88 /* We no longer need to add extern "C", because cpp implicitly
89 forces the standard include files to be treated as C. */
90 /*#define ADD_MISSING_EXTERN_C 1 */
92 #if ADD_MISSING_EXTERN_C
93 int missing_extern_C_count = 0;
96 #include "xsys-protos.h"
98 #ifdef FIXPROTO_IGNORE_LIST
99 /* This is a currently unused feature. */
101 /* List of files and directories to ignore.
102 A directory name (ending in '/') means ignore anything in that
103 directory. (It might be more efficient to do directory pruning
104 earlier in fixproto, but this is simpler and easier to customize.) */
106 static char *files_to_ignore[] = {
117 /* Certain standard files get extra treatment */
140 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
141 by an empty name (i.e. by "\0\0"). */
143 typedef const char *namelist;
145 /* The following macros provide the bits for symbol_flags. */
146 typedef int symbol_flags;
148 /* Used to mark names defined in the ANSI/ISO C standard. */
149 #define ANSI_SYMBOL 1
151 /* We no longer massage include files for POSIX or XOPEN symbols,
152 as there are now several versions of the POSIX and XOPEN standards,
153 and it would be a maintenance nightmare for us to track them all.
154 Better to be compatible with the system include files. */
155 /*#define ADD_MISSING_POSIX 1 */
156 /*#define ADD_MISSING_XOPEN 1 */
158 #if ADD_MISSING_POSIX
159 /* Used to mark names defined in the Posix.1 or Posix.2 standard. */
160 #define POSIX1_SYMBOL 2
161 #define POSIX2_SYMBOL 4
163 #define POSIX1_SYMBOL 0
164 #define POSIX2_SYMBOL 0
167 #if ADD_MISSING_XOPEN
168 /* Used to mark names defined in X/Open Portability Guide. */
169 #define XOPEN_SYMBOL 8
170 /* Used to mark names defined in X/Open UNIX Extensions. */
171 #define XOPEN_EXTENDED_SYMBOL 16
173 #define XOPEN_SYMBOL 0
174 #define XOPEN_EXTENDED_SYMBOL 0
177 /* Used to indicate names that are not functions */
178 #define MACRO_SYMBOL 512
185 #define SYMBOL_TABLE_SIZE 10
186 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
187 int cur_symbol_table_size;
189 static void add_symbols PARAMS ((symbol_flags, namelist));
190 static struct fn_decl *lookup_std_proto PARAMS ((const char *, int));
191 static void write_lbrac PARAMS ((void));
192 static void recognized_macro PARAMS ((const char *));
193 static void check_macro_names PARAMS ((cpp_reader *, namelist));
194 static void read_scan_file PARAMS ((char *, int, char **));
195 static void write_rbrac PARAMS ((void));
196 static int inf_skip_spaces PARAMS ((int));
197 static int inf_read_upto PARAMS ((sstring *, int));
198 static int inf_scan_ident PARAMS ((sstring *, int));
199 static int check_protection PARAMS ((int *, int *));
202 add_symbols (flags, names)
206 symbol_table[cur_symbol_table_size].flags = flags;
207 symbol_table[cur_symbol_table_size].names = names;
208 cur_symbol_table_size++;
209 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
210 fatal ("too many calls to add_symbols");
211 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
214 struct std_include_entry {
220 const char NONE[] = ""; /* The empty namelist. */
222 /* Special name to indicate a continuation line in std_include_table. */
223 const char CONTINUED[] = "";
225 struct std_include_entry *include_entry;
227 struct std_include_entry std_include_table [] = {
228 { "ctype.h", ANSI_SYMBOL,
229 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
230 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
232 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
234 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
236 /* ANSI_SYMBOL is wrong, but ... */
237 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
238 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
239 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
240 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
241 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
243 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
245 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
246 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
248 /*{ "limit.h", ... provided by gcc }, */
250 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
252 { "math.h", ANSI_SYMBOL,
253 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
254 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
257 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
259 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
261 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
262 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
264 /* Left out signal() - its prototype is too complex for us!
265 Also left out "sigaction sigaddset sigdelset sigemptyset
266 sigfillset sigismember sigpending sigprocmask sigsuspend"
267 because these need sigset_t or struct sigaction.
268 Most systems that provide them will also declare them. */
269 { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
271 { "stdio.h", ANSI_SYMBOL,
272 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
273 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
274 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
275 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
276 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
278 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
279 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
280 /* Should perhaps also handle NULL, EOF, ... ? */
282 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
283 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
284 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
285 Should perhaps also add NULL */
286 { "stdlib.h", ANSI_SYMBOL,
287 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
288 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
289 srand\0strtod\0strtol\0strtoul\0system\0" },
290 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
292 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
293 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
294 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
295 strtok\0strxfrm\0" },
296 /* Should perhaps also add NULL and size_t */
298 { "strings.h", XOPEN_EXTENDED_SYMBOL,
299 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
301 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
303 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
304 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
305 and many systems do have <sys/ioctl.h> but not <strops.h>. */
306 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
308 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
310 { "sys/stat.h", POSIX1_SYMBOL,
311 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
312 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
313 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
314 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
315 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
318 /* How do we handle fd_set? */
319 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
320 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
323 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
324 /* "sys/types.h" add types (not in old g++-include) */
326 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
328 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
329 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
330 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
331 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
333 { "tar.h", POSIX1_SYMBOL, NONE },
335 { "termios.h", POSIX1_SYMBOL,
336 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
338 { "time.h", ANSI_SYMBOL,
339 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
341 { "unistd.h", POSIX1_SYMBOL,
342 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
343 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
344 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
345 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
346 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
347 ttyname\0unlink\0write\0" },
348 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
349 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
350 "lockf\0gethostid\0gethostname\0readlink\0symlink\0" },
352 { "utime.h", POSIX1_SYMBOL, "utime\0" },
357 enum special_file special_file_handling = no_special;
359 /* They are set if the corresponding macro has been seen. */
360 /* The following are only used when handling sys/stat.h */
361 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
362 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
363 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
364 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
365 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
366 int seen_S_IFREG = 0, seen_S_ISREG = 0;
367 /* The following are only used when handling errno.h */
369 /* The following are only used when handling stdlib.h */
370 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
372 #define obstack_chunk_alloc xmalloc
373 #define obstack_chunk_free free
374 struct obstack scan_file_obstack;
376 /* NOTE: If you edit this, also edit gen-protos.c !! */
378 static struct fn_decl *
379 lookup_std_proto (name, name_length)
383 int i = hashstr (name, name_length) % HASH_SIZE;
388 if (hash_tab[i] == 0)
390 fn = &std_protos[hash_tab[i]];
391 if ((int) strlen (fn->fname) == name_length
392 && strncmp (fn->fname, name, name_length) == 0)
394 i = (i+1) % HASH_SIZE;
401 int inc_filename_length;
402 const char *progname = "fix-header";
406 int lbrac_line, rbrac_line;
408 int required_unseen_count = 0;
409 int required_other = 0;
415 #if ADD_MISSING_EXTERN_C
416 if (missing_extern_C_count + required_unseen_count > 0)
417 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
422 fprintf (outf, "#ifndef _PARAMS\n");
423 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
424 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
425 fprintf (outf, "#else\n");
426 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
427 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
433 struct partial_proto *next;
434 char *fname; /* name of function */
435 char *rtype; /* return type */
440 struct partial_proto *partial_proto_list = NULL;
442 struct partial_proto required_dummy_proto, seen_dummy_proto;
443 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
444 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
445 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
446 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
449 recognized_macro (fname)
452 /* The original include file defines fname as a macro. */
453 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
455 /* Since fname is a macro, don't require a prototype for it. */
459 required_unseen_count--;
463 switch (special_file_handling)
466 if (strcmp (fname, "errno") == 0 && !seen_errno)
467 seen_errno = 1, required_other--;
470 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
471 seen_EXIT_FAILURE = 1, required_other--;
472 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
473 seen_EXIT_SUCCESS = 1, required_other--;
476 if (fname[0] == 'S' && fname[1] == '_')
478 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
479 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
480 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
481 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
482 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
483 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
484 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
485 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
486 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
487 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
488 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
489 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
499 recognized_extern (name, name_length, type, type_length)
501 const char *type ATTRIBUTE_UNUSED;
502 int name_length, type_length ATTRIBUTE_UNUSED;
504 switch (special_file_handling)
507 if (name_length == 5 && strncmp (name, "errno", 5) == 0 && !seen_errno)
508 seen_errno = 1, required_other--;
516 /* Called by scan_decls if it saw a function definition for a function
517 named FNAME, with return type RTYPE, and argument list ARGS,
518 in source file FILE_SEEN on line LINE_SEEN.
519 KIND is 'I' for an inline function;
520 'F' if a normal function declaration preceded by 'extern "C"'
521 (or nested inside 'extern "C"' braces); or
522 'f' for other function declarations. */
525 recognized_function (fname, fname_length,
526 kind, rtype, rtype_length,
527 have_arg_list, file_seen, line_seen)
530 int kind; /* One of 'f' 'F' or 'I' */
534 const char *file_seen;
537 struct partial_proto *partial;
540 #if ADD_MISSING_EXTERN_C
542 missing_extern_C_count++;
545 fn = lookup_std_proto (fname, fname_length);
547 /* Remove the function from the list of required function. */
551 required_unseen_count--;
555 /* If we have a full prototype, we're done. */
559 if (kind == 'I') /* don't edit inline function */
562 /* If the partial prototype was included from some other file,
563 we don't need to patch it up (in this run). */
564 i = strlen (file_seen);
565 if (i < inc_filename_length
566 || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
571 if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
574 /* We only have a partial function declaration,
575 so remember that we have to add a complete prototype. */
577 partial = (struct partial_proto *)
578 obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
579 partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
580 bcopy (fname, partial->fname, fname_length);
581 partial->fname[fname_length] = 0;
582 partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
583 sprintf (partial->rtype, "%.*s", rtype_length, rtype);
584 partial->line_seen = line_seen;
586 fn->partial = partial;
587 partial->next = partial_proto_list;
588 partial_proto_list = partial;
591 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
592 inc_filename, partial->fname);
596 /* For any name in NAMES that is defined as a macro,
597 call recognized_macro on it. */
600 check_macro_names (pfile, names)
606 if (cpp_lookup (pfile, names, -1, -1))
607 recognized_macro (names);
608 names += strlen (names) + 1;
613 read_scan_file (in_fname, argc, argv)
619 cpp_options scan_options;
622 register struct symbol_list *cur_symbols;
624 obstack_init (&scan_file_obstack);
626 cpp_reader_init (&scan_in);
627 scan_in.opts = &scan_options;
628 cpp_options_init (&scan_options);
629 i = cpp_handle_options (&scan_in, argc, argv);
630 if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
631 cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
632 if (CPP_FATAL_ERRORS (&scan_in))
633 exit (FATAL_EXIT_CODE);
635 if (! cpp_start_read (&scan_in, in_fname))
636 exit (FATAL_EXIT_CODE);
637 CPP_OPTIONS (&scan_in)->no_line_commands = 1;
639 scan_decls (&scan_in, argc, argv);
640 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
641 check_macro_names (&scan_in, cur_symbols->names);
643 if (verbose && (scan_in.errors + warnings) > 0)
644 fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
645 inc_filename, scan_in.errors, warnings);
647 exit (SUCCESS_EXIT_CODE);
649 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
650 If so, those functions are also required. */
651 if (special_file_handling == stdio_h
652 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
654 static char getchar_call[] = "getchar();";
656 = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
657 int old_written = CPP_WRITTEN (&scan_in);
660 /* Scan the macro expansion of "getchar();". */
663 enum cpp_token token = cpp_get_token (&scan_in);
664 int length = CPP_WRITTEN (&scan_in) - old_written;
665 CPP_SET_WRITTEN (&scan_in, old_written);
666 if (token == CPP_EOF) /* Should not happen ... */
668 if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
670 cpp_pop_buffer (&scan_in);
673 if (token == CPP_NAME && length == 7
674 && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
679 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
680 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
682 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
684 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
685 if (need_filbuf + need_flsbuf)
687 const char *new_list;
691 SET_REQUIRED (flsbuf_fn);
692 if (need_flsbuf + need_filbuf == 2)
693 new_list = "_filbuf\0_flsbuf\0";
694 else if (need_flsbuf)
695 new_list = "_flsbuf\0";
696 else /* if (need_flsbuf) */
697 new_list = "_filbuf\0";
698 add_symbols (ANSI_SYMBOL, new_list);
699 required_unseen_count += need_filbuf + need_flsbuf;
704 if (required_unseen_count + partial_count + required_other
705 #if ADD_MISSING_EXTERN_C
706 + missing_extern_C_count
711 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
712 exit (SUCCESS_EXIT_CODE);
715 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
718 if (required_unseen_count)
719 fprintf (stderr, "%s: %d missing function declarations.\n",
720 inc_filename, required_unseen_count);
722 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
723 inc_filename, partial_count);
724 #if ADD_MISSING_EXTERN_C
725 if (missing_extern_C_count)
727 "%s: %d declarations not protected by extern \"C\".\n",
728 inc_filename, missing_extern_C_count);
738 register struct symbol_list *cur_symbols;
740 if (required_unseen_count)
742 #ifdef NO_IMPLICIT_EXTERN_C
743 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
747 /* Now we print out prototypes for those functions that we haven't seen. */
748 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
750 int if_was_emitted = 0;
752 cptr = cur_symbols->names;
753 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
755 int macro_protect = 0;
757 if (cur_symbols->flags & MACRO_SYMBOL)
760 fn = lookup_std_proto (cptr, name_len);
761 if (fn == NULL || !REQUIRED (fn))
766 /* what about curses. ??? or _flsbuf/_filbuf ??? */
767 if (cur_symbols->flags & ANSI_SYMBOL)
769 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
770 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
772 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
773 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
774 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
775 else if (cur_symbols->flags & XOPEN_SYMBOL)
778 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
779 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
781 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
784 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
785 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
789 fatal ("internal error for function %s", fn->fname);
794 /* In the case of memmove, protect in case the application
795 defines it as a macro before including the header. */
796 if (!strcmp (fn->fname, "memmove")
797 || !strcmp (fn->fname, "vprintf")
798 || !strcmp (fn->fname, "vfprintf")
799 || !strcmp (fn->fname, "vsprintf")
800 || !strcmp (fn->fname, "rewinddir")
801 || !strcmp (fn->fname, "abort"))
805 fprintf (outf, "#ifndef %s\n", fn->fname);
806 fprintf (outf, "extern %s %s (%s);\n",
807 fn->rtype, fn->fname, fn->params);
809 fprintf (outf, "#endif\n");
813 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
815 if (required_unseen_count)
817 #ifdef NO_IMPLICIT_EXTERN_C
818 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
822 switch (special_file_handling)
826 fprintf (outf, "extern int errno;\n");
829 if (!seen_EXIT_FAILURE)
830 fprintf (outf, "#define EXIT_FAILURE 1\n");
831 if (!seen_EXIT_SUCCESS)
832 fprintf (outf, "#define EXIT_SUCCESS 0\n");
835 if (!seen_S_ISBLK && seen_S_IFBLK)
837 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
838 if (!seen_S_ISCHR && seen_S_IFCHR)
840 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
841 if (!seen_S_ISDIR && seen_S_IFDIR)
843 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
844 if (!seen_S_ISFIFO && seen_S_IFIFO)
846 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
847 if (!seen_S_ISLNK && seen_S_IFLNK)
849 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
850 if (!seen_S_ISREG && seen_S_IFREG)
852 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
860 #if ADD_MISSING_EXTERN_C
861 if (missing_extern_C_count + required_unseen_count > 0)
862 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
866 /* Returns 1 iff the file is properly protected from multiple inclusion:
873 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
874 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
882 if (c == ' ' || c == '\t')
889 (void) INF_UNGET (c);
900 source_lineno++, lineno++;
903 else if ((c = INF_GET ()) == '/')
913 /* Read into STR from inf_buffer upto DELIM. */
916 inf_read_upto (str, delim)
924 if (ch == EOF || ch == delim)
926 SSTRING_PUT (str, ch);
928 MAKE_SSTRING_SPACE (str, 1);
934 inf_scan_ident (s, c)
939 if (ISALPHA (c) || c == '_')
945 if (c == EOF || !(ISALNUM (c) || c == '_'))
949 MAKE_SSTRING_SPACE (s, 1);
954 /* Returns 1 if the file is correctly protected against multiple
955 inclusion, setting *ifndef_line to the line number of the initial #ifndef
956 and setting *endif_line to the final #endif.
957 Otherwise return 0. */
960 check_protection (ifndef_line, endif_line)
961 int *ifndef_line, *endif_line;
964 int if_nesting = 1; /* Level of nesting of #if's */
965 char *protect_name = NULL; /* Identifier following initial #ifndef */
968 /* Skip initial white space (including comments). */
971 c = inf_skip_spaces (' ');
979 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
980 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
983 /* So far so good: We've seen an initial #ifndef. */
984 *ifndef_line = lineno;
985 c = inf_scan_ident (&buf, inf_skip_spaces (c));
986 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
988 protect_name = xstrdup (buf.base);
990 (void) INF_UNGET (c);
991 c = inf_read_upto (&buf, '\n');
998 c = inf_skip_spaces (' ');
1008 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1009 if (SSTRING_LENGTH (&buf) == 0)
1011 else if (!strcmp (buf.base, "ifndef")
1012 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1016 else if (!strcmp (buf.base, "endif"))
1019 if (if_nesting == 0)
1022 else if (!strcmp (buf.base, "else"))
1024 if (if_nesting == 1)
1027 else if (!strcmp (buf.base, "define"))
1029 if (if_nesting != 1)
1031 c = inf_skip_spaces (c);
1032 c = inf_scan_ident (&buf, c);
1033 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1039 if (c == '\n' || c == EOF)
1050 *endif_line = lineno;
1051 /* Skip final white space (including comments). */
1054 c = inf_skip_spaces (' ');
1064 extern int main PARAMS ((int, char **));
1074 #ifdef FIXPROTO_IGNORE_LIST
1082 register struct symbol_list *cur_symbols;
1084 if (argv[0] && argv[0][0])
1089 for (p = argv[0]; *p; p++)
1092 progname = progname ? progname+1 : argv[0];
1097 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1099 exit (FATAL_EXIT_CODE);
1102 inc_filename = argv[1];
1103 inc_filename_length = strlen (inc_filename);
1105 #ifdef FIXPROTO_IGNORE_LIST
1106 for (i = 0; files_to_ignore[i] != NULL; i++)
1108 char *ignore_name = files_to_ignore[i];
1109 int ignore_len = strlen (ignore_name);
1110 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1112 if (ignore_name[ignore_len-1] == '/'
1113 || inc_filename[ignore_len] == '\0')
1116 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1117 exit (SUCCESS_EXIT_CODE);
1124 if (strcmp (inc_filename, "sys/stat.h") == 0)
1125 special_file_handling = sys_stat_h;
1126 else if (strcmp (inc_filename, "errno.h") == 0)
1127 special_file_handling = errno_h, required_other++;
1128 else if (strcmp (inc_filename, "stdlib.h") == 0)
1129 special_file_handling = stdlib_h, required_other+=2;
1130 else if (strcmp (inc_filename, "stdio.h") == 0)
1131 special_file_handling = stdio_h;
1132 include_entry = std_include_table;
1133 while (include_entry->name != NULL
1134 && ((strcmp (include_entry->name, CONTINUED) == 0)
1135 || strcmp (inc_filename, include_entry->name) != 0))
1138 if (include_entry->name != NULL)
1140 struct std_include_entry *entry;
1141 cur_symbol_table_size = 0;
1142 for (entry = include_entry; ;)
1145 add_symbols (entry->flags, entry->names);
1147 if (!entry->name || strcmp (entry->name, CONTINUED) != 0)
1152 symbol_table[0].names = NULL;
1154 /* Count and mark the prototypes required for this include file. */
1155 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1158 if (cur_symbols->flags & MACRO_SYMBOL)
1160 cptr = cur_symbols->names;
1161 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1163 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1164 required_unseen_count++;
1166 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
1172 read_scan_file (argv[2], argc - 4, argv + 4);
1174 inf_fd = open (argv[2], O_RDONLY, 0666);
1177 fprintf (stderr, "%s: Cannot open '%s' for reading -",
1180 exit (FATAL_EXIT_CODE);
1182 if (fstat (inf_fd, &sbuf) < 0)
1184 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1186 exit (FATAL_EXIT_CODE);
1188 inf_size = sbuf.st_size;
1189 inf_buffer = (char *) xmalloc (inf_size + 2);
1190 inf_buffer[inf_size] = '\n';
1191 inf_buffer[inf_size + 1] = '\0';
1192 inf_limit = inf_buffer + inf_size;
1193 inf_ptr = inf_buffer;
1198 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1201 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1203 exit (FATAL_EXIT_CODE);
1207 inf_size -= to_read;
1215 /* If file doesn't end with '\n', add one. */
1216 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1220 outf = fopen (argv[3], "w");
1223 fprintf (stderr, "%s: Cannot open '%s' for writing -",
1226 exit (FATAL_EXIT_CODE);
1231 if (check_protection (&ifndef_line, &endif_line))
1233 lbrac_line = ifndef_line+1;
1234 rbrac_line = endif_line;
1242 /* Reset input file. */
1243 inf_ptr = inf_buffer;
1248 if (lineno == lbrac_line)
1250 if (lineno == rbrac_line)
1258 if (ISALPHA (c) || c == '_')
1260 c = inf_scan_ident (&buf, c);
1261 (void) INF_UNGET (c);
1262 fputs (buf.base, outf);
1263 fn = lookup_std_proto (buf.base, strlen (buf.base));
1264 /* We only want to edit the declaration matching the one
1265 seen by scan-decls, as there can be multiple
1266 declarations, selected by #ifdef __STDC__ or whatever. */
1267 if (fn && fn->partial && fn->partial->line_seen == lineno)
1269 c = inf_skip_spaces (' ');
1274 c = inf_skip_spaces (' ');
1277 fprintf (outf, " _PARAMS((%s))", fn->params);
1282 (void) INF_UNGET (c);
1286 fprintf (outf, " %c", c);
1314 fprintf (stderr, "%s: %s: ", progname, inc_filename);
1315 vfprintf (stderr, str, ap);
1316 fprintf (stderr, "\n");
1318 exit (FATAL_EXIT_CODE);
1322 fatal VPARAMS ((const char *str, ...))
1324 #ifndef ANSI_PROTOTYPES
1331 #ifndef ANSI_PROTOTYPES
1332 str = va_arg (ap, const char *);