1 /* fix-header.c - Make C header file suitable for C++.
2 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19 /* This program massages a system include file (such as stdio.h),
20 into a form that is compatible with GNU C and GNU C++.
22 * extern "C" { ... } braces are added (inside #ifndef __cplusplus),
23 if they seem to be needed. These prevent C++ compilers from name
24 mangling the functions inside the braces.
26 * If an old-style incomplete function declaration is seen (without
27 an argument list), and it is a "standard" function listed in
28 the file sys-protos.h (and with a non-empty argument list), then
29 the declaration is converted to a complete prototype by replacing
30 the empty parameter list with the argument list from sys-protos.h.
32 * The program can be given a list of (names of) required standard
33 functions (such as fclose for stdio.h). If a required function
34 is not seen in the input, then a prototype for it will be
35 written to the output.
37 * If all of the non-comment code of the original file is protected
38 against multiple inclusion:
41 <body of include file>
43 then extra matter added to the include file is placed inside the <body>.
45 * If the input file is OK (nothing needs to be done);
46 the output file is not written (nor removed if it exists).
48 There are also some special actions that are done for certain
49 well-known standard include files:
51 * If argv[1] is "sys/stat.h", the Posix.1 macros
52 S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if
53 they were missing, and the corresponding "traditional" S_IFxxx
56 * If argv[1] is "errno.h", errno is declared if it was missing.
58 * TODO: The input file should be read complete into memory, because:
59 a) it needs to be scanned twice anyway, and
60 b) it would be nice to allow update in place.
63 fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
65 * FOO.H is the relative file name of the include file,
66 as it would be #include'd by a C file. (E.g. stdio.h)
67 * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h)
68 * OUTFILE.H is the full pathname for where to write the output file,
69 if anything needs to be done. (e.g. ./include/stdio.h)
70 * OPTIONS can be -D or -I switches as you would pass to cpp.
72 Written by Per Bothner <bothner@cygnus.com>, July 1993. */
76 #include "coretypes.h"
81 #include "c-incpath.h"
83 static void v_fatal (const char *, va_list)
84 ATTRIBUTE_PRINTF (1,0) ATTRIBUTE_NORETURN;
85 static void fatal (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
87 struct line_maps line_table;
92 int partial_count = 0;
95 #if ADD_MISSING_EXTERN_C
96 int missing_extern_C_count = 0;
99 #include "xsys-protos.h"
101 #ifdef FIXPROTO_IGNORE_LIST
102 /* This is a currently unused feature. */
104 /* List of files and directories to ignore.
105 A directory name (ending in '/') means ignore anything in that
106 directory. (It might be more efficient to do directory pruning
107 earlier in fixproto, but this is simpler and easier to customize.) */
109 static const char *const files_to_ignore[] = {
119 static const char *cur_file;
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;
193 static void add_symbols (symbol_flags, namelist);
194 static struct fn_decl *lookup_std_proto (const char *, int);
195 static void write_lbrac (void);
196 static void recognized_macro (const char *);
197 static void check_macro_names (cpp_reader *, namelist);
198 static void read_scan_file (char *, int, char **);
199 static void write_rbrac (void);
200 static int inf_skip_spaces (int);
201 static int inf_read_upto (sstring *, int);
202 static int inf_scan_ident (sstring *, int);
203 static int check_protection (int *, int *);
204 static void cb_file_change (cpp_reader *, const struct line_map *);
207 add_symbols (symbol_flags flags, namelist names)
209 symbol_table[cur_symbol_table_size].flags = flags;
210 symbol_table[cur_symbol_table_size].names = names;
211 cur_symbol_table_size++;
212 if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
213 fatal ("too many calls to add_symbols");
214 symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */
217 struct std_include_entry {
218 const char *const name;
219 const symbol_flags flags;
220 const namelist names;
223 const char NONE[] = ""; /* The empty namelist. */
225 /* Special name to indicate a continuation line in std_include_table. */
226 const char CONTINUED[] = "";
228 const struct std_include_entry *include_entry;
230 const struct std_include_entry std_include_table [] = {
231 { "ctype.h", ANSI_SYMBOL,
232 "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
233 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
235 { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
237 { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
239 /* ANSI_SYMBOL is wrong, but ... */
240 { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
241 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
242 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
243 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
244 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
246 { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
248 /* Maybe also "getgrent fgetgrent setgrent endgrent" */
249 { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
251 /*{ "limit.h", ... provided by gcc }, */
253 { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
255 { "math.h", ANSI_SYMBOL,
256 "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
257 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
260 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
262 { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
264 /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */
265 { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
267 /* Left out signal() - its prototype is too complex for us!
268 Also left out "sigaction sigaddset sigdelset sigemptyset
269 sigfillset sigismember sigpending sigprocmask sigsuspend"
270 because these need sigset_t or struct sigaction.
271 Most systems that provide them will also declare them. */
272 { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
274 { "stdio.h", ANSI_SYMBOL,
275 "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
276 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
277 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
278 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
279 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
281 { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
282 { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */
283 /* Should perhaps also handle NULL, EOF, ... ? */
285 /* "div ldiv", - ignored because these depend on div_t, ldiv_t
286 ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
287 Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
288 Should perhaps also add NULL */
289 { "stdlib.h", ANSI_SYMBOL,
290 "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
291 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
292 srand\0strtod\0strtol\0strtoul\0system\0" },
293 { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
295 { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
296 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
297 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
298 strtok\0strxfrm\0" },
299 /* Should perhaps also add NULL and size_t */
301 { "strings.h", XOPEN_EXTENDED_SYMBOL,
302 "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
304 { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
306 /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
307 ioctl in <strops.h>. However, many systems have it is sys/ioctl.h,
308 and many systems do have <sys/ioctl.h> but not <strops.h>. */
309 { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
311 { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
313 { "sys/stat.h", POSIX1_SYMBOL,
314 "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
315 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
316 "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
317 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
318 { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
321 /* How do we handle fd_set? */
322 { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
323 { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
326 { "sys/times.h", POSIX1_SYMBOL, "times\0" },
327 /* "sys/types.h" add types (not in old g++-include) */
329 { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
331 { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
332 { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
333 "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
334 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
336 { "tar.h", POSIX1_SYMBOL, NONE },
338 { "termios.h", POSIX1_SYMBOL,
339 "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
341 { "time.h", ANSI_SYMBOL,
342 "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
344 { "unistd.h", POSIX1_SYMBOL,
345 "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
346 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
347 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
348 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
349 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
350 ttyname\0unlink\0write\0" },
351 { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
352 { CONTINUED, XOPEN_EXTENDED_SYMBOL,
353 "lockf\0gethostid\0gethostname\0readlink\0symlink\0" },
355 { "utime.h", POSIX1_SYMBOL, "utime\0" },
360 enum special_file special_file_handling = no_special;
362 /* They are set if the corresponding macro has been seen. */
363 /* The following are only used when handling sys/stat.h */
364 int seen_S_IFBLK = 0, seen_S_ISBLK = 0;
365 int seen_S_IFCHR = 0, seen_S_ISCHR = 0;
366 int seen_S_IFDIR = 0, seen_S_ISDIR = 0;
367 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
368 int seen_S_IFLNK = 0, seen_S_ISLNK = 0;
369 int seen_S_IFREG = 0, seen_S_ISREG = 0;
370 /* The following are only used when handling errno.h */
372 /* The following are only used when handling stdlib.h */
373 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
375 struct obstack scan_file_obstack;
377 /* NOTE: If you edit this, also edit gen-protos.c !! */
379 static struct fn_decl *
380 lookup_std_proto (const char *name, int name_length)
382 int i = hashstr (name, name_length) % HASH_SIZE;
387 if (hash_tab[i] == 0)
389 fn = &std_protos[hash_tab[i]];
390 if ((int) strlen (fn->fname) == name_length
391 && strncmp (fn->fname, name, name_length) == 0)
393 i = (i+1) % HASH_SIZE;
400 int inc_filename_length;
401 const char *progname = "fix-header";
405 int lbrac_line, rbrac_line;
407 int required_unseen_count = 0;
408 int required_other = 0;
415 fprintf (outf, "#ifndef _PARAMS\n");
416 fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
417 fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
418 fprintf (outf, "#else\n");
419 fprintf (outf, "#define _PARAMS(ARGS) ()\n");
420 fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
426 struct partial_proto *next;
431 struct partial_proto *partial_proto_list = NULL;
433 struct partial_proto required_dummy_proto, seen_dummy_proto;
434 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
435 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
436 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
437 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
440 recognized_macro (const char *fname)
442 /* The original include file defines fname as a macro. */
443 struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
445 /* Since fname is a macro, don't require a prototype for it. */
449 required_unseen_count--;
453 switch (special_file_handling)
456 if (strcmp (fname, "errno") == 0 && !seen_errno)
457 seen_errno = 1, required_other--;
460 if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
461 seen_EXIT_FAILURE = 1, required_other--;
462 if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
463 seen_EXIT_SUCCESS = 1, required_other--;
466 if (fname[0] == 'S' && fname[1] == '_')
468 if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
469 else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
470 else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
471 else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
472 else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
473 else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
474 else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
475 else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
476 else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
477 else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
478 else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
479 else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
489 recognized_extern (const cpp_token *name)
491 switch (special_file_handling)
494 if (cpp_ideq (name, "errno"))
495 seen_errno = 1, required_other--;
503 /* Called by scan_decls if it saw a function definition for a function
504 named FNAME. KIND is 'I' for an inline function; 'F' if a normal
505 function declaration preceded by 'extern "C"' (or nested inside
506 'extern "C"' braces); or 'f' for other function declarations. */
509 recognized_function (const cpp_token *fname, unsigned int line, int kind,
512 struct partial_proto *partial;
516 fn = lookup_std_proto ((const char *) NODE_NAME (fname->val.node),
517 NODE_LEN (fname->val.node));
519 /* Remove the function from the list of required function. */
523 required_unseen_count--;
527 /* If we have a full prototype, we're done. */
531 if (kind == 'I') /* don't edit inline function */
534 /* If the partial prototype was included from some other file,
535 we don't need to patch it up (in this run). */
536 i = strlen (cur_file);
537 if (i < inc_filename_length
538 || strcmp (inc_filename, cur_file + (i - inc_filename_length)) != 0)
543 if (fn->params[0] == '\0')
546 /* We only have a partial function declaration,
547 so remember that we have to add a complete prototype. */
549 partial = obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
550 partial->line_seen = line;
552 fn->partial = partial;
553 partial->next = partial_proto_list;
554 partial_proto_list = partial;
557 fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
558 inc_filename, fn->fname);
562 /* For any name in NAMES that is defined as a macro,
563 call recognized_macro on it. */
566 check_macro_names (cpp_reader *pfile, namelist names)
571 len = strlen (names);
572 if (cpp_defined (pfile, (const unsigned char *)names, len))
573 recognized_macro (names);
579 cb_file_change (cpp_reader *pfile ATTRIBUTE_UNUSED,
580 const struct line_map *map)
582 /* Just keep track of current file name. */
583 cur_file = map == NULL ? NULL : map->to_file;
587 read_scan_file (char *in_fname, int argc, char **argv)
591 cpp_options *options;
593 int i, strings_processed;
594 struct symbol_list *cur_symbols;
596 obstack_init (&scan_file_obstack);
598 linemap_init (&line_table);
599 scan_in = cpp_create_reader (CLK_GNUC89, NULL, &line_table);
600 cb = cpp_get_callbacks (scan_in);
601 cb->file_change = cb_file_change;
603 /* We are going to be scanning a header file out of its proper context,
604 so ignore warnings and errors. */
605 options = cpp_get_options (scan_in);
606 options->inhibit_warnings = 1;
607 options->inhibit_errors = 1;
608 cpp_post_options (scan_in);
610 if (!cpp_read_main_file (scan_in, in_fname))
611 exit (FATAL_EXIT_CODE);
613 cpp_change_file (scan_in, LC_RENAME, "<built-in>");
614 cpp_init_builtins (scan_in, true);
615 cpp_change_file (scan_in, LC_RENAME, in_fname);
617 /* Process switches after builtins so -D can override them. */
618 for (i = 0; i < argc; i += strings_processed)
620 strings_processed = 0;
621 if (argv[i][0] == '-')
623 if (argv[i][1] == 'I')
625 if (argv[i][2] != '\0')
627 strings_processed = 1;
628 add_path (xstrdup (argv[i] + 2), BRACKET, false);
630 else if (i + 1 != argc)
632 strings_processed = 2;
633 add_path (xstrdup (argv[i + 1]), BRACKET, false);
636 else if (argv[i][1] == 'D')
638 if (argv[i][2] != '\0')
639 strings_processed = 1, cpp_define (scan_in, argv[i] + 2);
640 else if (i + 1 != argc)
641 strings_processed = 2, cpp_define (scan_in, argv[i + 1]);
645 if (strings_processed == 0)
650 cpp_error (scan_in, CPP_DL_ERROR, "invalid option `%s'", argv[i]);
651 if (cpp_errors (scan_in))
652 exit (FATAL_EXIT_CODE);
654 register_include_chains (scan_in, NULL /* sysroot */, NULL /* iprefix */,
655 true /* stdinc */, false /* cxx_stdinc */,
656 false /* verbose */);
658 /* We are scanning a system header, so mark it as such. */
659 cpp_make_system_header (scan_in, 1, 0);
661 scan_decls (scan_in, argc, argv);
662 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
663 check_macro_names (scan_in, cur_symbols->names);
665 /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
666 If so, those functions are also required. */
667 if (special_file_handling == stdio_h
668 && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
670 unsigned char getchar_call[] = "getchar();\n";
673 /* Scan the macro expansion of "getchar();". */
674 cpp_push_buffer (scan_in, getchar_call, sizeof(getchar_call) - 1,
675 /* from_stage3 */ true);
678 const cpp_token *t = cpp_get_token (scan_in);
680 if (t->type == CPP_EOF)
682 else if (cpp_ideq (t, "_filbuf"))
688 int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
689 struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
691 = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
693 /* Append "_filbuf" and/or "_flsbuf" to the required functions. */
694 if (need_filbuf + need_flsbuf)
696 const char *new_list;
700 SET_REQUIRED (flsbuf_fn);
701 if (need_flsbuf && need_filbuf)
702 new_list = "_filbuf\0_flsbuf\0";
703 else if (need_flsbuf)
704 new_list = "_flsbuf\0";
705 else /* if (need_flsbuf) */
706 new_list = "_filbuf\0";
707 add_symbols (ANSI_SYMBOL, new_list);
708 required_unseen_count += need_filbuf + need_flsbuf;
713 if (required_unseen_count + partial_count + required_other == 0)
716 fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
717 exit (SUCCESS_EXIT_CODE);
720 fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
723 if (required_unseen_count)
724 fprintf (stderr, "%s: %d missing function declarations.\n",
725 inc_filename, required_unseen_count);
727 fprintf (stderr, "%s: %d non-prototype function declarations.\n",
728 inc_filename, partial_count);
737 struct symbol_list *cur_symbols;
739 if (required_unseen_count)
741 #ifdef NO_IMPLICIT_EXTERN_C
742 fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
746 /* Now we print out prototypes for those functions that we haven't seen. */
747 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
749 int if_was_emitted = 0;
751 cptr = cur_symbols->names;
752 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
754 int macro_protect = 0;
756 if (cur_symbols->flags & MACRO_SYMBOL)
759 fn = lookup_std_proto (cptr, name_len);
760 if (fn == NULL || !REQUIRED (fn))
765 /* what about curses. ??? or _flsbuf/_filbuf ??? */
766 if (cur_symbols->flags & ANSI_SYMBOL)
768 "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
769 else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
771 "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
772 ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
773 : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
774 else if (cur_symbols->flags & XOPEN_SYMBOL)
777 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
778 || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
780 else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
783 "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
784 || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
788 fatal ("internal error for function %s", fn->fname);
793 /* In the case of memmove, protect in case the application
794 defines it as a macro before including the header. */
795 if (!strcmp (fn->fname, "memmove")
796 || !strcmp (fn->fname, "putc")
797 || !strcmp (fn->fname, "getc")
798 || !strcmp (fn->fname, "vprintf")
799 || !strcmp (fn->fname, "vfprintf")
800 || !strcmp (fn->fname, "vsprintf")
801 || !strcmp (fn->fname, "rewinddir")
802 || !strcmp (fn->fname, "abort"))
806 fprintf (outf, "#ifndef %s\n", fn->fname);
807 fprintf (outf, "extern %s %s (%s);\n",
808 fn->rtype, fn->fname, fn->params);
810 fprintf (outf, "#endif\n");
814 "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
816 if (required_unseen_count)
818 #ifdef NO_IMPLICIT_EXTERN_C
819 fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
823 switch (special_file_handling)
827 fprintf (outf, "extern int errno;\n");
830 if (!seen_EXIT_FAILURE)
831 fprintf (outf, "#define EXIT_FAILURE 1\n");
832 if (!seen_EXIT_SUCCESS)
833 fprintf (outf, "#define EXIT_SUCCESS 0\n");
836 if (!seen_S_ISBLK && seen_S_IFBLK)
838 "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
839 if (!seen_S_ISCHR && seen_S_IFCHR)
841 "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
842 if (!seen_S_ISDIR && seen_S_IFDIR)
844 "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
845 if (!seen_S_ISFIFO && seen_S_IFIFO)
847 "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
848 if (!seen_S_ISLNK && seen_S_IFLNK)
850 "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
851 if (!seen_S_ISREG && seen_S_IFREG)
853 "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
862 /* Returns 1 iff the file is properly protected from multiple inclusion:
869 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
870 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
873 inf_skip_spaces (int c)
877 if (c == ' ' || c == '\t')
884 (void) INF_UNGET (c);
895 source_lineno++, lineno++;
898 else if ((c = INF_GET ()) == '/')
908 /* Read into STR from inf_buffer upto DELIM. */
911 inf_read_upto (sstring *str, int delim)
917 if (ch == EOF || ch == delim)
919 SSTRING_PUT (str, ch);
921 MAKE_SSTRING_SPACE (str, 1);
927 inf_scan_ident (sstring *s, int c)
936 if (c == EOF || !(ISIDNUM (c)))
940 MAKE_SSTRING_SPACE (s, 1);
945 /* Returns 1 if the file is correctly protected against multiple
946 inclusion, setting *ifndef_line to the line number of the initial #ifndef
947 and setting *endif_line to the final #endif.
948 Otherwise return 0. */
951 check_protection (int *ifndef_line, int *endif_line)
954 int if_nesting = 1; /* Level of nesting of #if's */
955 char *protect_name = NULL; /* Identifier following initial #ifndef */
958 /* Skip initial white space (including comments). */
961 c = inf_skip_spaces (' ');
969 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
970 if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
973 /* So far so good: We've seen an initial #ifndef. */
974 *ifndef_line = lineno;
975 c = inf_scan_ident (&buf, inf_skip_spaces (c));
976 if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
978 protect_name = xstrdup (buf.base);
980 (void) INF_UNGET (c);
981 c = inf_read_upto (&buf, '\n');
988 c = inf_skip_spaces (' ');
998 c = inf_scan_ident (&buf, inf_skip_spaces (' '));
999 if (SSTRING_LENGTH (&buf) == 0)
1001 else if (!strcmp (buf.base, "ifndef")
1002 || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1006 else if (!strcmp (buf.base, "endif"))
1009 if (if_nesting == 0)
1012 else if (!strcmp (buf.base, "else"))
1014 if (if_nesting == 1)
1017 else if (!strcmp (buf.base, "define"))
1019 c = inf_skip_spaces (c);
1020 c = inf_scan_ident (&buf, c);
1021 if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1027 if (c == '\n' || c == EOF)
1038 *endif_line = lineno;
1039 /* Skip final white space (including comments). */
1042 c = inf_skip_spaces (' ');
1052 extern int main (int, char **);
1055 main (int argc, char **argv)
1060 #ifdef FIXPROTO_IGNORE_LIST
1068 struct symbol_list *cur_symbols;
1070 if (argv[0] && argv[0][0])
1075 for (p = argv[0]; *p; p++)
1078 progname = progname ? progname+1 : argv[0];
1083 fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1085 exit (FATAL_EXIT_CODE);
1088 inc_filename = argv[1];
1089 inc_filename_length = strlen (inc_filename);
1091 #ifdef FIXPROTO_IGNORE_LIST
1092 for (i = 0; files_to_ignore[i] != NULL; i++)
1094 const char *const ignore_name = files_to_ignore[i];
1095 int ignore_len = strlen (ignore_name);
1096 if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1098 if (ignore_name[ignore_len-1] == '/'
1099 || inc_filename[ignore_len] == '\0')
1102 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1103 exit (SUCCESS_EXIT_CODE);
1110 if (strcmp (inc_filename, "sys/stat.h") == 0)
1111 special_file_handling = sys_stat_h;
1112 else if (strcmp (inc_filename, "errno.h") == 0)
1113 special_file_handling = errno_h, required_other++;
1114 else if (strcmp (inc_filename, "stdlib.h") == 0)
1115 special_file_handling = stdlib_h, required_other+=2;
1116 else if (strcmp (inc_filename, "stdio.h") == 0)
1117 special_file_handling = stdio_h;
1118 include_entry = std_include_table;
1119 while (include_entry->name != NULL
1120 && ((strcmp (include_entry->name, CONTINUED) == 0)
1121 || strcmp (inc_filename, include_entry->name) != 0))
1124 if (include_entry->name != NULL)
1126 const struct std_include_entry *entry;
1127 cur_symbol_table_size = 0;
1128 for (entry = include_entry; ;)
1131 add_symbols (entry->flags, entry->names);
1133 if (!entry->name || strcmp (entry->name, CONTINUED) != 0)
1138 symbol_table[0].names = NULL;
1140 /* Count and mark the prototypes required for this include file. */
1141 for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1144 if (cur_symbols->flags & MACRO_SYMBOL)
1146 cptr = cur_symbols->names;
1147 for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1149 struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1150 required_unseen_count++;
1152 fprintf (stderr, "Internal error: No prototype for %s\n", cptr);
1158 read_scan_file (argv[2], argc - 4, argv + 4);
1160 inf_fd = open (argv[2], O_RDONLY, 0666);
1163 fprintf (stderr, "%s: Cannot open '%s' for reading -",
1166 exit (FATAL_EXIT_CODE);
1168 if (fstat (inf_fd, &sbuf) < 0)
1170 fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1172 exit (FATAL_EXIT_CODE);
1174 inf_size = sbuf.st_size;
1175 inf_buffer = xmalloc (inf_size + 2);
1176 inf_ptr = inf_buffer;
1181 long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1184 fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1186 exit (FATAL_EXIT_CODE);
1190 inf_size -= to_read;
1198 /* Inf_size may have changed if read was short (as on VMS) */
1199 inf_buffer[inf_size] = '\n';
1200 inf_buffer[inf_size + 1] = '\0';
1201 inf_limit = inf_buffer + inf_size;
1203 /* If file doesn't end with '\n', add one. */
1204 if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1208 outf = fopen (argv[3], "w");
1211 fprintf (stderr, "%s: Cannot open '%s' for writing -",
1214 exit (FATAL_EXIT_CODE);
1219 if (check_protection (&ifndef_line, &endif_line))
1221 lbrac_line = ifndef_line+1;
1222 rbrac_line = endif_line;
1230 /* Reset input file. */
1231 inf_ptr = inf_buffer;
1236 if (lineno == lbrac_line)
1238 if (lineno == rbrac_line)
1248 c = inf_scan_ident (&buf, c);
1249 (void) INF_UNGET (c);
1250 fputs (buf.base, outf);
1251 fn = lookup_std_proto (buf.base, strlen (buf.base));
1252 /* We only want to edit the declaration matching the one
1253 seen by scan-decls, as there can be multiple
1254 declarations, selected by #ifdef __STDC__ or whatever. */
1255 if (fn && fn->partial && fn->partial->line_seen == lineno)
1257 c = inf_skip_spaces (' ');
1262 c = inf_skip_spaces (' ');
1265 fprintf (outf, " _PARAMS((%s))", fn->params);
1270 (void) INF_UNGET (c);
1274 fprintf (outf, " %c", c);
1298 v_fatal (const char *str, va_list ap)
1300 fprintf (stderr, "%s: %s: ", progname, inc_filename);
1301 vfprintf (stderr, str, ap);
1302 fprintf (stderr, "\n");
1304 exit (FATAL_EXIT_CODE);
1308 fatal (const char *str, ...)