gcc/fix-header.c

   1 /* fix-header.c - Make C header file suitable for C++.
   2    Copyright (C) 1993, 94-97, 1998 Free Software Foundation, Inc.
   3
   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
   7 later version.
   8
   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.
  13
  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.  */
  17
  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++.
  20
  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.
  24
  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.
  30
  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.
  35
  36    * If all of the non-comment code of the original file is protected
  37    against multiple inclusion:
  38         #ifndef FOO
  39         #define FOO
  40         <body of include file>
  41         #endif
  42    then extra matter added to the include file is placed inside the <body>.
  43
  44    * If the input file is OK (nothing needs to be done);
  45    the output file is not written (nor removed if it exists).
  46
  47    There are also some special actions that are done for certain
  48    well-known standard include files:
  49
  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
  53    macros were defined.
  54
  55    * If argv[1] is "errno.h", errno is declared if it was missing.
  56
  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.
  60
  61    Usage:
  62         fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
  63    where:
  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.
  70
  71    Written by Per Bothner <bothner@cygnus.com>, July 1993.  */
  72
  73 #include "hconfig.h"
  74 #include "system.h"
  75 #include "obstack.h"
  76 #include "scan.h"
  77 #include "cpplib.h"
  78 #include "gansidecl.h"
  79
  80 #ifndef O_RDONLY
  81 #define O_RDONLY 0
  82 #endif
  83
  84 extern void cpp_fatal ();
  85
  86 #if !__STDC__ && !defined(const)
  87 #define const /* nothing */
  88 #endif
  89
  90 sstring buf;
  91
  92 int verbose = 0;
  93 int partial_count = 0;
  94 int warnings = 0;
  95
  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 */
  99
 100 #if ADD_MISSING_EXTERN_C
 101 int missing_extern_C_count = 0;
 102 #endif
 103
 104 #include "xsys-protos.h"
 105
 106 #ifdef FIXPROTO_IGNORE_LIST
 107 /* This is a currently unused feature.  */
 108
 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.) */
 113
 114 static char *files_to_ignore[] = {
 115   "X11/",
 116   FIXPROTO_IGNORE_LIST
 117   0
 118 };
 119 #endif
 120
 121 char *inf_buffer;
 122 char *inf_limit;
 123 char *inf_ptr;
 124
 125 /* Certain standard files get extra treatment */
 126
 127 enum special_file
 128 {
 129   no_special,
 130 #ifdef errno_h
 131 #undef errno_h
 132 #endif
 133   errno_h,
 134 #ifdef stdio_h
 135 #undef stdio_h
 136 #endif
 137   stdio_h,
 138 #ifdef stdlib_h
 139 #undef stdlib_h
 140 #endif
 141   stdlib_h,
 142 #ifdef sys_stat_h
 143 #undef sys_stat_h
 144 #endif
 145   sys_stat_h
 146 };
 147
 148 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
 149    by an empty name (i.e. by "\0\0").  */
 150
 151 typedef const char *namelist;
 152
 153 /* The following macros provide the bits for symbol_flags.  */
 154 typedef int symbol_flags;
 155
 156 /* Used to mark names defined in the ANSI/ISO C standard.  */
 157 #define ANSI_SYMBOL 1
 158
 159 /* We no longer massage include files for POSIX or XOPEN symbols,
 160    as there are now several versions of the POSIX and XOPEN standards,
 161    and it would be a maintenance nightmare for us to track them all.
 162    Better to be compatible with the system include files.  */
 163 /*#define ADD_MISSING_POSIX 1 */
 164 /*#define ADD_MISSING_XOPEN 1 */
 165
 166 #if ADD_MISSING_POSIX
 167 /* Used to mark names defined in the Posix.1 or Posix.2 standard.  */
 168 #define POSIX1_SYMBOL 2
 169 #define POSIX2_SYMBOL 4
 170 #else
 171 #define POSIX1_SYMBOL 0
 172 #define POSIX2_SYMBOL 0
 173 #endif
 174
 175 #if ADD_MISSING_XOPEN
 176 /* Used to mark names defined in X/Open Portability Guide.  */
 177 #define XOPEN_SYMBOL 8
 178 /* Used to mark names defined in X/Open UNIX Extensions.  */
 179 #define XOPEN_EXTENDED_SYMBOL 16
 180 #else
 181 #define XOPEN_SYMBOL 0
 182 #define XOPEN_EXTENDED_SYMBOL 0
 183 #endif
 184
 185 /* Used to indicate names that are not functions */
 186 #define MACRO_SYMBOL 512
 187
 188 struct symbol_list {
 189   symbol_flags flags;
 190   namelist names;
 191 };
 192
 193 #define SYMBOL_TABLE_SIZE 10
 194 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
 195 int cur_symbol_table_size;
 196
 197 void
 198 add_symbols (flags, names)
 199      symbol_flags flags;
 200      namelist names;
 201 {
 202   symbol_table[cur_symbol_table_size].flags = flags;
 203   symbol_table[cur_symbol_table_size].names = names;
 204   cur_symbol_table_size++;
 205   if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
 206     fatal ("too many calls to add_symbols");
 207   symbol_table[cur_symbol_table_size].names = NULL; /* Termination.  */
 208 }
 209
 210 struct std_include_entry {
 211   const char *name;
 212   symbol_flags flags;
 213   namelist names;
 214 };
 215
 216 const char NONE[] = "";  /* The empty namelist.  */
 217
 218 /* Special name to indicate a continuation line in std_include_table.  */
 219 const char CONTINUED[] = "";
 220
 221 struct std_include_entry *include_entry;
 222
 223 struct std_include_entry std_include_table [] = {
 224   { "ctype.h", ANSI_SYMBOL,
 225       "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
 226 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
 227
 228   { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
 229
 230   { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
 231
 232   /* ANSI_SYMBOL is wrong, but ...  */
 233   { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
 234 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
 235 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
 236 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
 237 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
 238
 239   { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
 240
 241   /* Maybe also "getgrent fgetgrent setgrent endgrent" */
 242   { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
 243
 244 /*{ "limit.h", ... provided by gcc }, */
 245
 246   { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
 247
 248   { "math.h", ANSI_SYMBOL,
 249       "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
 250 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
 251 tan\0tanh\0" },
 252
 253   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
 254
 255   { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
 256
 257   /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.  */
 258   { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
 259
 260   /* Left out signal() - its prototype is too complex for us!
 261      Also left out "sigaction sigaddset sigdelset sigemptyset
 262      sigfillset sigismember sigpending sigprocmask sigsuspend"
 263      because these need sigset_t or struct sigaction.
 264      Most systems that provide them will also declare them.  */
 265   { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
 266
 267   { "stdio.h", ANSI_SYMBOL,
 268       "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
 269 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
 270 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
 271 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
 272 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
 273 tmpnam\0ungetc\0" },
 274   { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
 275   { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" },  /* I think ...  */
 276 /* Should perhaps also handle NULL, EOF, ... ? */
 277
 278   /* "div ldiv", - ignored because these depend on div_t, ldiv_t
 279      ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
 280      Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
 281      Should perhaps also add NULL */
 282   { "stdlib.h", ANSI_SYMBOL,
 283       "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
 284 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
 285 srand\0strtod\0strtol\0strtoul\0system\0" },
 286   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
 287
 288   { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
 289 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
 290 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
 291 strtok\0strxfrm\0" },
 292 /* Should perhaps also add NULL and size_t */
 293
 294   { "strings.h", XOPEN_EXTENDED_SYMBOL,
 295       "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
 296
 297   { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
 298
 299   /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
 300      ioctl in <strops.h>.  However, many systems have it is sys/ioctl.h,
 301      and many systems do have <sys/ioctl.h> but not <strops.h>.  */
 302   { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
 303
 304   { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
 305
 306   { "sys/stat.h", POSIX1_SYMBOL,
 307       "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
 308   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
 309       "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
 310 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
 311   { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
 312
 313 #if 0
 314 /* How do we handle fd_set? */
 315   { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
 316   { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
 317 #endif
 318
 319   { "sys/times.h", POSIX1_SYMBOL, "times\0" },
 320   /* "sys/types.h" add types (not in old g++-include) */
 321
 322   { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
 323
 324   { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
 325   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
 326       "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
 327 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
 328
 329   { "tar.h", POSIX1_SYMBOL, NONE },
 330
 331   { "termios.h", POSIX1_SYMBOL,
 332       "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
 333
 334   { "time.h", ANSI_SYMBOL,
 335       "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
 336
 337   { "unistd.h", POSIX1_SYMBOL,
 338       "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
 339 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
 340 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
 341 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
 342 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
 343 ttyname\0unlink\0write\0" },
 344   { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
 345   { CONTINUED, XOPEN_EXTENDED_SYMBOL,
 346       "lockf\0gethostid\0gethostname\0readlink\0" },
 347
 348   { "utime.h", POSIX1_SYMBOL, "utime\0" },
 349
 350   { NULL, 0, NONE }
 351 };
 352
 353 enum special_file special_file_handling = no_special;
 354
 355 /* They are set if the corresponding macro has been seen.  */
 356 /* The following are only used when handling sys/stat.h */
 357 int seen_S_IFBLK = 0, seen_S_ISBLK  = 0;
 358 int seen_S_IFCHR = 0, seen_S_ISCHR  = 0;
 359 int seen_S_IFDIR = 0, seen_S_ISDIR  = 0;
 360 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
 361 int seen_S_IFLNK = 0, seen_S_ISLNK  = 0;
 362 int seen_S_IFREG = 0, seen_S_ISREG  = 0;
 363 /* The following are only used when handling errno.h */
 364 int seen_errno = 0;
 365 /* The following are only used when handling stdlib.h */
 366 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
 367 \f
 368 /* Wrapper around free, to avoid prototype clashes.  */
 369
 370 void
 371 xfree (ptr)
 372      char *ptr;
 373 {
 374   free (ptr);
 375 }
 376
 377 /* Avoid error if config defines abort as fancy_abort.
 378    It's not worth "really" implementing this because ordinary
 379    compiler users never run fix-header.  */
 380
 381 void
 382 fancy_abort ()
 383 {
 384   abort ();
 385 }
 386 \f
 387 #define obstack_chunk_alloc xmalloc
 388 #define obstack_chunk_free xfree
 389 struct obstack scan_file_obstack;
 390
 391 /* NOTE:  If you edit this, also edit gen-protos.c !! */
 392
 393 struct fn_decl *
 394 lookup_std_proto (name, name_length)
 395      const char *name;
 396      int name_length;
 397 {
 398   int i = hashf (name, name_length, HASH_SIZE);
 399   int i0 = i;
 400   for (;;)
 401     {
 402       struct fn_decl *fn;
 403       if (hash_tab[i] == 0)
 404         return NULL;
 405       fn = &std_protos[hash_tab[i]];
 406       if (strlen (fn->fname) == name_length
 407           && strncmp (fn->fname, name, name_length) == 0)
 408         return fn;
 409       i = (i+1) % HASH_SIZE;
 410       if (i == i0)
 411         abort ();
 412     }
 413 }
 414
 415 char *inc_filename;
 416 int inc_filename_length;
 417 char *progname = "fix-header";
 418 FILE *outf;
 419 sstring line;
 420
 421 int lbrac_line, rbrac_line;
 422
 423 int required_unseen_count = 0;
 424 int required_other = 0;
 425
 426 void
 427 write_lbrac ()
 428 {
 429
 430 #if ADD_MISSING_EXTERN_C
 431   if (missing_extern_C_count + required_unseen_count > 0)
 432     fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
 433 #endif
 434
 435   if (partial_count)
 436     {
 437       fprintf (outf, "#ifndef _PARAMS\n");
 438       fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
 439       fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
 440       fprintf (outf, "#else\n");
 441       fprintf (outf, "#define _PARAMS(ARGS) ()\n");
 442       fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
 443     }
 444 }
 445
 446 struct partial_proto
 447 {
 448   struct partial_proto *next;
 449   char *fname;  /* name of function */
 450   char *rtype;  /* return type */
 451   struct fn_decl *fn;
 452   int line_seen;
 453 };
 454
 455 struct partial_proto *partial_proto_list = NULL;
 456
 457 struct partial_proto required_dummy_proto, seen_dummy_proto;
 458 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
 459 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
 460 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
 461 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
 462
 463 void
 464 recognized_macro (fname)
 465      char *fname;
 466 {
 467   /* The original include file defines fname as a macro.  */
 468   struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
 469
 470   /* Since fname is a macro, don't require a prototype for it.  */
 471   if (fn)
 472     {
 473       if (REQUIRED (fn))
 474         required_unseen_count--;
 475       SET_SEEN (fn);
 476     }
 477
 478   switch (special_file_handling)
 479     {
 480     case errno_h:
 481       if (strcmp (fname, "errno") == 0 && !seen_errno)
 482         seen_errno = 1, required_other--;
 483       break;
 484     case stdlib_h:
 485       if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
 486         seen_EXIT_FAILURE = 1, required_other--;
 487       if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
 488         seen_EXIT_SUCCESS = 1, required_other--;
 489       break;
 490     case sys_stat_h:
 491       if (fname[0] == 'S' && fname[1] == '_')
 492         {
 493           if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
 494           else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
 495           else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
 496           else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
 497           else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
 498           else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
 499           else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
 500           else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
 501           else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
 502           else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
 503           else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
 504           else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
 505         }
 506       break;
 507
 508     default:
 509       break;
 510     }
 511 }
 512
 513 void
 514 recognized_extern (name, name_length, type, type_length)
 515      char *name;
 516      char *type;
 517      int name_length, type_length;
 518 {
 519   switch (special_file_handling)
 520     {
 521     case errno_h:
 522       if (name_length == 5 && strncmp (name, "errno", 5) == 0 && !seen_errno)
 523         seen_errno = 1, required_other--;
 524       break;
 525
 526     default:
 527       break;
 528     }
 529 }
 530
 531 /* Called by scan_decls if it saw a function definition for a function
 532    named FNAME, with return type RTYPE, and argument list ARGS,
 533    in source file FILE_SEEN on line LINE_SEEN.
 534    KIND is 'I' for an inline function;
 535    'F' if a normal function declaration preceded by 'extern "C"'
 536    (or nested inside 'extern "C"' braces); or
 537    'f' for other function declarations.  */
 538
 539 void
 540 recognized_function (fname, fname_length,
 541                      kind, rtype, rtype_length,
 542                      have_arg_list, file_seen, line_seen)
 543      char *fname;
 544      int fname_length;
 545      int kind; /* One of 'f' 'F' or 'I' */
 546      char *rtype;
 547      int rtype_length;
 548      int have_arg_list;
 549      char *file_seen;
 550      int line_seen;
 551 {
 552   struct partial_proto *partial;
 553   int i;
 554   struct fn_decl *fn;
 555 #if ADD_MISSING_EXTERN_C
 556   if (kind == 'f')
 557     missing_extern_C_count++;
 558 #endif
 559
 560   fn = lookup_std_proto (fname, fname_length);
 561
 562   /* Remove the function from the list of required function.  */
 563   if (fn)
 564     {
 565       if (REQUIRED (fn))
 566         required_unseen_count--;
 567       SET_SEEN (fn);
 568     }
 569
 570   /* If we have a full prototype, we're done.  */
 571   if (have_arg_list)
 572     return;
 573
 574   if (kind == 'I')  /* don't edit inline function */
 575     return;
 576
 577   /* If the partial prototype was included from some other file,
 578      we don't need to patch it up (in this run).  */
 579   i = strlen (file_seen);
 580   if (i < inc_filename_length
 581       || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0)
 582     return;
 583
 584   if (fn == NULL)
 585     return;
 586   if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0)
 587     return;
 588
 589   /* We only have a partial function declaration,
 590      so remember that we have to add a complete prototype.  */
 591   partial_count++;
 592   partial = (struct partial_proto *)
 593     obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
 594   partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1);
 595   bcopy (fname, partial->fname, fname_length);
 596   partial->fname[fname_length] = 0;
 597   partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1);
 598   sprintf (partial->rtype, "%.*s", rtype_length, rtype);
 599   partial->line_seen = line_seen;
 600   partial->fn = fn;
 601   fn->partial = partial;
 602   partial->next = partial_proto_list;
 603   partial_proto_list = partial;
 604   if (verbose)
 605     {
 606       fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
 607                inc_filename, partial->fname);
 608     }
 609 }
 610
 611 /* For any name in NAMES that is defined as a macro,
 612    call recognized_macro on it.  */
 613
 614 void
 615 check_macro_names (pfile, names)
 616      cpp_reader *pfile;
 617      namelist names;
 618 {
 619   while (*names)
 620     {
 621       if (cpp_lookup (pfile, names, -1, -1))
 622         recognized_macro (names);
 623       names += strlen (names) + 1;
 624     }
 625 }
 626
 627 void
 628 read_scan_file (in_fname, argc, argv)
 629      char *in_fname;
 630      int argc;
 631      char **argv;
 632 {
 633   cpp_reader scan_in;
 634   cpp_options scan_options;
 635   struct fn_decl *fn;
 636   int i;
 637   register struct symbol_list *cur_symbols;
 638
 639   obstack_init (&scan_file_obstack);
 640
 641   cpp_reader_init (&scan_in);
 642   scan_in.data = &scan_options;
 643   cpp_options_init (&scan_options);
 644   i = cpp_handle_options (&scan_in, argc, argv);
 645   if (i < argc && ! CPP_FATAL_ERRORS (&scan_in))
 646     cpp_fatal (&scan_in, "Invalid option `%s'", argv[i]);
 647   if (CPP_FATAL_ERRORS (&scan_in))
 648     exit (FATAL_EXIT_CODE);
 649
 650   if (! cpp_start_read (&scan_in, in_fname))
 651     exit (FATAL_EXIT_CODE);
 652   CPP_OPTIONS (&scan_in)->no_line_commands = 1;
 653
 654   scan_decls (&scan_in, argc, argv);
 655   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
 656     check_macro_names (&scan_in, cur_symbols->names);
 657
 658   if (verbose && (scan_in.errors + warnings) > 0)
 659     fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n",
 660              inc_filename, scan_in.errors, warnings);
 661   if (scan_in.errors)
 662     exit (SUCCESS_EXIT_CODE);
 663
 664   /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
 665      If so, those functions are also required.  */
 666   if (special_file_handling == stdio_h
 667       && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
 668     {
 669       static char getchar_call[] = "getchar();";
 670       cpp_buffer *buf
 671         = cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1);
 672       int old_written = CPP_WRITTEN (&scan_in);
 673       int seen_filbuf = 0;
 674
 675       /* Scan the macro expansion of "getchar();".  */
 676       for (;;)
 677         {
 678           enum cpp_token token = cpp_get_token (&scan_in);
 679           int length = CPP_WRITTEN (&scan_in) - old_written;
 680           CPP_SET_WRITTEN (&scan_in, old_written);
 681           if (token == CPP_EOF) /* Should not happen ...  */
 682             break;
 683           if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf)
 684             {
 685               cpp_pop_buffer (&scan_in);
 686               break;
 687             }
 688           if (token == CPP_NAME && length == 7
 689               && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0)
 690             seen_filbuf++;
 691         }
 692       if (seen_filbuf)
 693         {
 694           int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
 695           struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
 696           int need_flsbuf
 697             = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
 698
 699           /* Append "_filbuf" and/or "_flsbuf" to the required functions.  */
 700           if (need_filbuf + need_flsbuf)
 701             {
 702               char *new_list;
 703               if (need_filbuf)
 704                 SET_REQUIRED (fn);
 705               if (need_flsbuf)
 706                 SET_REQUIRED (flsbuf_fn);
 707               if (need_flsbuf + need_filbuf == 2)
 708                 new_list = "_filbuf\0_flsbuf\0";
 709               else if (need_flsbuf)
 710                 new_list = "_flsbuf\0";
 711               else /* if (need_flsbuf) */
 712                 new_list = "_filbuf\0";
 713               add_symbols (ANSI_SYMBOL, new_list);
 714               required_unseen_count += need_filbuf + need_flsbuf;
 715             }
 716         }
 717     }
 718
 719   if (required_unseen_count + partial_count + required_other
 720 #if ADD_MISSING_EXTERN_C
 721       + missing_extern_C_count
 722 #endif
 723       == 0)
 724     {
 725       if (verbose)
 726         fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
 727       exit (SUCCESS_EXIT_CODE);
 728     }
 729   if (!verbose)
 730     fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
 731   else
 732     {
 733       if (required_unseen_count)
 734         fprintf (stderr, "%s: %d missing function declarations.\n",
 735                  inc_filename, required_unseen_count);
 736       if (partial_count)
 737         fprintf (stderr, "%s: %d non-prototype function declarations.\n",
 738                  inc_filename, partial_count);
 739 #if ADD_MISSING_EXTERN_C
 740       if (missing_extern_C_count)
 741         fprintf (stderr,
 742                  "%s: %d declarations not protected by extern \"C\".\n",
 743                  inc_filename, missing_extern_C_count);
 744 #endif
 745     }
 746 }
 747
 748 void
 749 write_rbrac ()
 750 {
 751   struct fn_decl *fn;
 752   const char *cptr;
 753   register struct symbol_list *cur_symbols;
 754
 755   if (required_unseen_count)
 756     {
 757 #ifdef NO_IMPLICIT_EXTERN_C
 758       fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
 759 #endif
 760     }
 761
 762   /* Now we print out prototypes for those functions that we haven't seen.  */
 763   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
 764     {
 765       int if_was_emitted = 0;
 766       int name_len;
 767       cptr = cur_symbols->names;
 768       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
 769         {
 770           int macro_protect = 0;
 771
 772           if (cur_symbols->flags & MACRO_SYMBOL)
 773             continue;
 774
 775           fn = lookup_std_proto (cptr, name_len);
 776           if (fn == NULL || !REQUIRED (fn))
 777             continue;
 778
 779           if (!if_was_emitted)
 780             {
 781 /*            what about curses. ??? or _flsbuf/_filbuf ??? */
 782               if (cur_symbols->flags & ANSI_SYMBOL)
 783                 fprintf (outf,
 784          "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
 785               else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
 786                 fprintf (outf,
 787        "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
 788     ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
 789     : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
 790               else if (cur_symbols->flags & XOPEN_SYMBOL)
 791                 {
 792                 fprintf (outf,
 793        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
 794    || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
 795                 }
 796               else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
 797                 {
 798                 fprintf (outf,
 799        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
 800    || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
 801                 }
 802               else
 803                 {
 804                   fatal ("internal error for function %s", fn->fname);
 805                 }
 806               if_was_emitted = 1;
 807             }
 808
 809           /* In the case of memmove, protect in case the application
 810              defines it as a macro before including the header.  */
 811           if (!strcmp (fn->fname, "memmove")
 812               || !strcmp (fn->fname, "vprintf")
 813               || !strcmp (fn->fname, "vfprintf")
 814               || !strcmp (fn->fname, "vsprintf")
 815               || !strcmp (fn->fname, "rewinddir"))
 816             macro_protect = 1;
 817
 818           if (macro_protect)
 819             fprintf (outf, "#ifndef %s\n", fn->fname);
 820           fprintf (outf, "extern %s %s (%s);\n",
 821                    fn->rtype, fn->fname, fn->params);
 822           if (macro_protect)
 823             fprintf (outf, "#endif\n");
 824         }
 825       if (if_was_emitted)
 826         fprintf (outf,
 827                  "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
 828     }
 829   if (required_unseen_count)
 830     {
 831 #ifdef NO_IMPLICIT_EXTERN_C
 832       fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
 833 #endif
 834     }
 835
 836   switch (special_file_handling)
 837     {
 838     case errno_h:
 839       if (!seen_errno)
 840         fprintf (outf, "extern int errno;\n");
 841       break;
 842     case stdlib_h:
 843       if (!seen_EXIT_FAILURE)
 844         fprintf (outf, "#define EXIT_FAILURE 1\n");
 845       if (!seen_EXIT_SUCCESS)
 846         fprintf (outf, "#define EXIT_SUCCESS 0\n");
 847       break;
 848     case sys_stat_h:
 849       if (!seen_S_ISBLK && seen_S_IFBLK)
 850         fprintf (outf,
 851                  "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
 852       if (!seen_S_ISCHR && seen_S_IFCHR)
 853         fprintf (outf,
 854                  "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
 855       if (!seen_S_ISDIR && seen_S_IFDIR)
 856         fprintf (outf,
 857                  "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
 858       if (!seen_S_ISFIFO && seen_S_IFIFO)
 859         fprintf (outf,
 860                  "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
 861       if (!seen_S_ISLNK && seen_S_IFLNK)
 862         fprintf (outf,
 863                  "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
 864       if (!seen_S_ISREG && seen_S_IFREG)
 865         fprintf (outf,
 866                  "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
 867       break;
 868
 869     default:
 870       break;
 871     }
 872
 873
 874 #if ADD_MISSING_EXTERN_C
 875   if (missing_extern_C_count + required_unseen_count > 0)
 876     fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
 877 #endif
 878 }
 879
 880 char *
 881 xstrdup (str)
 882      char *str;
 883 {
 884   char *copy = (char *) xmalloc (strlen (str) + 1);
 885   strcpy (copy, str);
 886   return copy;
 887 }
 888
 889 /* Returns 1 iff the file is properly protected from multiple inclusion:
 890    #ifndef PROTECT_NAME
 891    #define PROTECT_NAME
 892    #endif
 893
 894  */
 895
 896 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
 897 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
 898
 899 int
 900 inf_skip_spaces (c)
 901      int c;
 902 {
 903   for (;;)
 904     {
 905       if (c == ' ' || c == '\t')
 906         c = INF_GET ();
 907       else if (c == '/')
 908         {
 909           c = INF_GET ();
 910           if (c != '*')
 911             {
 912               (void) INF_UNGET (c);
 913               return '/';
 914             }
 915           c = INF_GET ();
 916           for (;;)
 917             {
 918               if (c == EOF)
 919                 return EOF;
 920               else if (c != '*')
 921                 {
 922                   if (c == '\n')
 923                     source_lineno++, lineno++;
 924                   c = INF_GET ();
 925                 }
 926               else if ((c = INF_GET ()) == '/')
 927                 return INF_GET ();
 928             }
 929         }
 930       else
 931         break;
 932     }
 933   return c;
 934 }
 935
 936 /* Read into STR from inf_buffer upto DELIM.  */
 937
 938 int
 939 inf_read_upto (str, delim)
 940      sstring *str;
 941      int delim;
 942 {
 943   int ch;
 944   for (;;)
 945     {
 946       ch = INF_GET ();
 947       if (ch == EOF || ch == delim)
 948         break;
 949       SSTRING_PUT (str, ch);
 950     }
 951   MAKE_SSTRING_SPACE (str, 1);
 952   *str->ptr = 0;
 953   return ch;
 954 }
 955
 956 int
 957 inf_scan_ident (s, c)
 958      register sstring *s;
 959      int c;
 960 {
 961   s->ptr = s->base;
 962   if (isalpha (c) || c == '_')
 963     {
 964       for (;;)
 965         {
 966           SSTRING_PUT (s, c);
 967           c = INF_GET ();
 968           if (c == EOF || !(isalnum (c) || c == '_'))
 969             break;
 970         }
 971     }
 972   MAKE_SSTRING_SPACE (s, 1);
 973   *s->ptr = 0;
 974   return c;
 975 }
 976
 977 /* Returns 1 if the file is correctly protected against multiple
 978    inclusion, setting *ifndef_line to the line number of the initial #ifndef
 979    and setting *endif_line to the final #endif.
 980    Otherwise return 0.  */
 981
 982 int
 983 check_protection (ifndef_line, endif_line)
 984      int *ifndef_line, *endif_line;
 985 {
 986   int c;
 987   int if_nesting = 1; /* Level of nesting of #if's */
 988   char *protect_name = NULL; /* Identifier following initial #ifndef */
 989   int define_seen = 0;
 990
 991   /* Skip initial white space (including comments).  */
 992   for (;; lineno++)
 993     {
 994       c = inf_skip_spaces (' ');
 995       if (c == EOF)
 996         return 0;
 997       if (c != '\n')
 998         break;
 999     }
1000   if (c != '#')
1001     return 0;
1002   c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1003   if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
1004     return 0;
1005
1006   /* So far so good: We've seen an initial #ifndef.  */
1007   *ifndef_line = lineno;
1008   c = inf_scan_ident (&buf, inf_skip_spaces (c));
1009   if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
1010     return 0;
1011   protect_name = xstrdup (buf.base);
1012
1013   (void) INF_UNGET (c);
1014   c = inf_read_upto (&buf, '\n');
1015   if (c == EOF)
1016     return 0;
1017   lineno++;
1018
1019   for (;;)
1020     {
1021       c = inf_skip_spaces (' ');
1022       if (c == EOF)
1023         return 0;
1024       if (c == '\n')
1025         {
1026           lineno++;
1027           continue;
1028         }
1029       if (c != '#')
1030         goto skip_to_eol;
1031       c = inf_scan_ident (&buf, inf_skip_spaces (' '));
1032       if (SSTRING_LENGTH (&buf) == 0)
1033         ;
1034       else if (!strcmp (buf.base, "ifndef")
1035           || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
1036         {
1037           if_nesting++;
1038         }
1039       else if (!strcmp (buf.base, "endif"))
1040         {
1041           if_nesting--;
1042           if (if_nesting == 0)
1043             break;
1044         }
1045       else if (!strcmp (buf.base, "else"))
1046         {
1047           if (if_nesting == 1)
1048             return 0;
1049         }
1050       else if (!strcmp (buf.base, "define"))
1051         {
1052           if (if_nesting != 1)
1053             goto skip_to_eol;
1054           c = inf_skip_spaces (c);
1055           c = inf_scan_ident (&buf, c);
1056           if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
1057             define_seen = 1;
1058         }
1059     skip_to_eol:
1060       for (;;)
1061         {
1062           if (c == '\n' || c == EOF)
1063             break;
1064           c = INF_GET ();
1065         }
1066       if (c == EOF)
1067         return 0;
1068       lineno++;
1069     }
1070
1071   if (!define_seen)
1072      return 0;
1073   *endif_line = lineno;
1074   /* Skip final white space (including comments).  */
1075   for (;;)
1076     {
1077       c = inf_skip_spaces (' ');
1078       if (c == EOF)
1079         break;
1080       if (c != '\n')
1081         return 0;
1082     }
1083
1084   return 1;
1085 }
1086
1087 int
1088 main (argc, argv)
1089      int argc;
1090      char **argv;
1091 {
1092   int inf_fd;
1093   struct stat sbuf;
1094   int c;
1095 #ifdef FIXPROTO_IGNORE_LIST
1096   int i;
1097 #endif
1098   const char *cptr;
1099   int ifndef_line;
1100   int endif_line;
1101   long to_read;
1102   long int inf_size;
1103   register struct symbol_list *cur_symbols;
1104
1105   if (argv[0] && argv[0][0])
1106     {
1107       register char *p;
1108
1109       progname = 0;
1110       for (p = argv[0]; *p; p++)
1111         if (*p == '/')
1112           progname = p;
1113       progname = progname ? progname+1 : argv[0];
1114     }
1115
1116   if (argc < 4)
1117     {
1118       fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
1119                progname);
1120       exit (FATAL_EXIT_CODE);
1121     }
1122
1123   inc_filename = argv[1];
1124   inc_filename_length = strlen (inc_filename);
1125
1126 #ifdef FIXPROTO_IGNORE_LIST
1127   for (i = 0; files_to_ignore[i] != NULL; i++)
1128     {
1129       char *ignore_name = files_to_ignore[i];
1130       int ignore_len = strlen (ignore_name);
1131       if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
1132         {
1133           if (ignore_name[ignore_len-1] == '/'
1134               || inc_filename[ignore_len] == '\0')
1135             {
1136               if (verbose)
1137                 fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
1138               exit (SUCCESS_EXIT_CODE);
1139             }
1140         }
1141
1142     }
1143 #endif
1144
1145   if (strcmp (inc_filename, "sys/stat.h") == 0)
1146     special_file_handling = sys_stat_h;
1147   else if (strcmp (inc_filename, "errno.h") == 0)
1148     special_file_handling = errno_h, required_other++;
1149   else if (strcmp (inc_filename, "stdlib.h") == 0)
1150     special_file_handling = stdlib_h, required_other+=2;
1151   else if (strcmp (inc_filename, "stdio.h") == 0)
1152     special_file_handling = stdio_h;
1153   include_entry = std_include_table;
1154   while (include_entry->name != NULL
1155          && (include_entry->name == CONTINUED
1156              || strcmp (inc_filename, include_entry->name) != 0))
1157     include_entry++;
1158
1159   if (include_entry->name != NULL)
1160     {
1161       struct std_include_entry *entry;
1162       cur_symbol_table_size = 0;
1163       for (entry = include_entry; ;)
1164         {
1165           if (entry->flags)
1166             add_symbols (entry->flags, entry->names);
1167           entry++;
1168           if (entry->name != CONTINUED)
1169             break;
1170         }
1171     }
1172   else
1173     symbol_table[0].names = NULL;
1174
1175   /* Count and mark the prototypes required for this include file.  */
1176   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
1177     {
1178       int name_len;
1179       if (cur_symbols->flags & MACRO_SYMBOL)
1180         continue;
1181       cptr = cur_symbols->names;
1182       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
1183         {
1184           struct fn_decl *fn = lookup_std_proto (cptr, name_len);
1185           required_unseen_count++;
1186           if (fn == NULL)
1187             fprintf (stderr, "Internal error:  No prototype for %s\n", cptr);
1188           else
1189             SET_REQUIRED (fn);
1190         }
1191     }
1192
1193   read_scan_file (argv[2], argc - 4, argv + 4);
1194
1195   inf_fd = open (argv[2], O_RDONLY, 0666);
1196   if (inf_fd < 0)
1197     {
1198       fprintf (stderr, "%s: Cannot open '%s' for reading -",
1199                progname, argv[2]);
1200       perror (NULL);
1201       exit (FATAL_EXIT_CODE);
1202     }
1203   if (fstat (inf_fd, &sbuf) < 0)
1204     {
1205       fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
1206       perror (NULL);
1207       exit (FATAL_EXIT_CODE);
1208     }
1209   inf_size = sbuf.st_size;
1210   inf_buffer = (char *) xmalloc (inf_size + 2);
1211   inf_buffer[inf_size] = '\n';
1212   inf_buffer[inf_size + 1] = '\0';
1213   inf_limit = inf_buffer + inf_size;
1214   inf_ptr = inf_buffer;
1215
1216   to_read = inf_size;
1217   while (to_read > 0)
1218     {
1219       long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
1220       if (i < 0)
1221         {
1222           fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
1223           perror (NULL);
1224           exit (FATAL_EXIT_CODE);
1225         }
1226       if (i == 0)
1227         {
1228           inf_size -= to_read;
1229           break;
1230         }
1231       to_read -= i;
1232     }
1233
1234   close (inf_fd);
1235
1236   /* If file doesn't end with '\n', add one.  */
1237   if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
1238     inf_limit++;
1239
1240   unlink (argv[3]);
1241   outf = fopen (argv[3], "w");
1242   if (outf == NULL)
1243     {
1244       fprintf (stderr, "%s: Cannot open '%s' for writing -",
1245                progname, argv[3]);
1246       perror (NULL);
1247       exit (FATAL_EXIT_CODE);
1248     }
1249
1250   lineno = 1;
1251
1252   if (check_protection (&ifndef_line, &endif_line))
1253     {
1254       lbrac_line = ifndef_line+1;
1255       rbrac_line = endif_line;
1256     }
1257   else
1258     {
1259       lbrac_line = 1;
1260       rbrac_line = -1;
1261     }
1262
1263   /* Reset input file.  */
1264   inf_ptr = inf_buffer;
1265   lineno = 1;
1266
1267   for (;;)
1268     {
1269       if (lineno == lbrac_line)
1270         write_lbrac ();
1271       if (lineno == rbrac_line)
1272         write_rbrac ();
1273       for (;;)
1274         {
1275           struct fn_decl *fn;
1276           c = INF_GET ();
1277           if (c == EOF)
1278             break;
1279           if (isalpha (c) || c == '_')
1280             {
1281               c = inf_scan_ident (&buf, c);
1282               (void) INF_UNGET (c);
1283               fputs (buf.base, outf);
1284               fn = lookup_std_proto (buf.base, strlen (buf.base));
1285               /* We only want to edit the declaration matching the one
1286                  seen by scan-decls, as there can be multiple
1287                  declarations, selected by #ifdef __STDC__ or whatever.  */
1288               if (fn && fn->partial && fn->partial->line_seen == lineno)
1289                 {
1290                   c = inf_skip_spaces (' ');
1291                   if (c == EOF)
1292                     break;
1293                   if (c == '(')
1294                     {
1295                       c = inf_skip_spaces (' ');
1296                       if (c == ')')
1297                         {
1298                           fprintf (outf, " _PARAMS((%s))", fn->params);
1299                         }
1300                       else
1301                         {
1302                           putc ('(', outf);
1303                           (void) INF_UNGET (c);
1304                         }
1305                     }
1306                   else
1307                     fprintf (outf, " %c", c);
1308                 }
1309             }
1310           else
1311             {
1312               putc (c, outf);
1313               if (c == '\n')
1314                 break;
1315             }
1316         }
1317       if (c == EOF)
1318         break;
1319       lineno++;
1320     }
1321   if (rbrac_line < 0)
1322     write_rbrac ();
1323
1324   fclose (outf);
1325
1326   return 0;
1327 }
1328 \f
1329 /* Stub error functions.  These replace cpperror.c,
1330    because we want to suppress error messages.  */
1331
1332 void
1333 cpp_file_line_for_message (filename, line, column)
1334      char *filename;
1335      int line, column;
1336 {
1337   if (!verbose)
1338     return;
1339   if (column > 0)
1340     fprintf (stderr, "%s:%d:%d: ", filename, line, column);
1341   else
1342     fprintf (stderr, "%s:%d: ", filename, line);
1343 }
1344
1345 void
1346 cpp_print_containing_files (pfile)
1347      cpp_reader *pfile;
1348 {
1349 }
1350
1351 /* IS_ERROR is 2 for fatal error, 1 for error, 0 for warning */
1352
1353 void cpp_message (pfile, is_error, msg, arg1, arg2, arg3)
1354      int is_error;
1355      cpp_reader *pfile;
1356      char *msg;
1357      char *arg1, *arg2, *arg3;
1358 {
1359   if (is_error == 1)
1360     pfile->errors++;
1361   else if (is_error > 1)
1362     pfile->errors = CPP_FATAL_LIMIT;
1363   if (!verbose)
1364     return;
1365   if (!is_error)
1366     fprintf (stderr, "warning: ");
1367   fprintf (stderr, msg, arg1, arg2, arg3);
1368   fprintf (stderr, "\n");
1369 }
1370
1371 void
1372 fatal (str, arg)
1373      char *str, *arg;
1374 {
1375   fprintf (stderr, "%s: %s: ", progname, inc_filename);
1376   fprintf (stderr, str, arg);
1377   fprintf (stderr, "\n");
1378   exit (FATAL_EXIT_CODE);
1379 }
1380
1381 void
1382 cpp_fatal (pfile, str, arg)
1383      cpp_reader *pfile;
1384      char *str, *arg;
1385 {
1386   fatal (str, arg);
1387 }
1388
1389 void
1390 cpp_pfatal_with_name (pfile, name)
1391      cpp_reader *pfile;
1392      char *name;
1393 {
1394   cpp_perror_with_name (pfile, name);
1395   exit (FATAL_EXIT_CODE);
1396 }