Open64: osprey/kg++fe/gnu/fix-header.c Source File

00001 /*
00002  * Copyright 2003, 2004, 2005, 2006 PathScale, Inc.  All Rights Reserved.
00003  */
00004 
00005 /* fix-header.c - Make C header file suitable for C++.
00006    Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998,
00007    1999, 2000, 2001 Free Software Foundation, Inc.
00008 
00009 This program is free software; you can redistribute it and/or modify it
00010 under the terms of the GNU General Public License as published by the
00011 Free Software Foundation; either version 2, or (at your option) any
00012 later version.
00013 
00014 This program is distributed in the hope that it will be useful,
00015 but WITHOUT ANY WARRANTY; without even the implied warranty of
00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017 GNU General Public License for more details.
00018 
00019 You should have received a copy of the GNU General Public License
00020 along with this program; if not, write to the Free Software
00021 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
00022 
00023 /* This program massages a system include file (such as stdio.h),
00024    into a form that is compatible with GNU C and GNU C++.
00025 
00026    * extern "C" { ... } braces are added (inside #ifndef __cplusplus),
00027    if they seem to be needed.  These prevent C++ compilers from name
00028    mangling the functions inside the braces.
00029 
00030    * If an old-style incomplete function declaration is seen (without
00031    an argument list), and it is a "standard" function listed in
00032    the file sys-protos.h (and with a non-empty argument list), then
00033    the declaration is converted to a complete prototype by replacing
00034    the empty parameter list with the argument list from sys-protos.h.
00035 
00036    * The program can be given a list of (names of) required standard
00037    functions (such as fclose for stdio.h).  If a required function
00038    is not seen in the input, then a prototype for it will be
00039    written to the output.
00040 
00041    * If all of the non-comment code of the original file is protected
00042    against multiple inclusion:
00043   #ifndef FOO
00044   #define FOO
00045   <body of include file>
00046   #endif
00047    then extra matter added to the include file is placed inside the <body>.
00048 
00049    * If the input file is OK (nothing needs to be done);
00050    the output file is not written (nor removed if it exists).
00051 
00052    There are also some special actions that are done for certain
00053    well-known standard include files:
00054 
00055    * If argv[1] is "sys/stat.h", the Posix.1 macros
00056    S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if
00057    they were missing, and the corresponding "traditional" S_IFxxx
00058    macros were defined.
00059 
00060    * If argv[1] is "errno.h", errno is declared if it was missing.
00061 
00062    * TODO:  The input file should be read complete into memory, because:
00063    a) it needs to be scanned twice anyway, and
00064    b) it would be nice to allow update in place.
00065 
00066    Usage:
00067   fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS]
00068    where:
00069    * FOO.H is the relative file name of the include file,
00070    as it would be #include'd by a C file.  (E.g. stdio.h)
00071    * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h)
00072    * OUTFILE.H is the full pathname for where to write the output file,
00073    if anything needs to be done.  (e.g. ./include/stdio.h)
00074    * OPTIONS are such as you would pass to cpp.
00075 
00076    Written by Per Bothner <bothner@cygnus.com>, July 1993.  */
00077 
00078 #include "hconfig.h"
00079 #include "system.h"
00080 #include "obstack.h"
00081 #include "scan.h"
00082 #include "cpplib.h"
00083 
00084 static void v_fatal PARAMS ((const char *, va_list)) ATTRIBUTE_PRINTF (1,0) ATTRIBUTE_NORETURN;
00085 static void fatal PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN;
00086 
00087 sstring buf;
00088 
00089 int verbose = 0;
00090 int partial_count = 0;
00091 int warnings = 0;
00092 
00093 /* We no longer need to add extern "C", because cpp implicitly
00094    forces the standard include files to be treated as C.  */
00095 /*#define ADD_MISSING_EXTERN_C 1 */
00096 
00097 #if ADD_MISSING_EXTERN_C
00098 int missing_extern_C_count = 0;
00099 #endif
00100 
00101 #ifndef SGI_MONGOOSE
00102 // Can not find this header file in gcc-3.2.2 source tree */
00103 #include "xsys-protos.h"
00104 #endif /* SGI_MONGOOSE */
00105 
00106 #ifdef FIXPROTO_IGNORE_LIST
00107 /* This is a currently unused feature.  */
00108 
00109 /* List of files and directories to ignore.
00110    A directory name (ending in '/') means ignore anything in that
00111    directory.  (It might be more efficient to do directory pruning
00112    earlier in fixproto, but this is simpler and easier to customize.) */
00113 
00114 static const char *const files_to_ignore[] = {
00115   "X11/",
00116   FIXPROTO_IGNORE_LIST
00117   0
00118 };
00119 #endif
00120 
00121 char *inf_buffer;
00122 char *inf_limit;
00123 char *inf_ptr;
00124 static const char *cur_file;
00125 
00126 /* Certain standard files get extra treatment */
00127 
00128 enum special_file
00129 {
00130   no_special,
00131 #ifdef errno_h
00132 #undef errno_h
00133 #endif
00134   errno_h,
00135 #ifdef stdio_h
00136 #undef stdio_h
00137 #endif
00138   stdio_h,
00139 #ifdef stdlib_h
00140 #undef stdlib_h
00141 #endif
00142   stdlib_h,
00143 #ifdef sys_stat_h
00144 #undef sys_stat_h
00145 #endif
00146   sys_stat_h
00147 };
00148 
00149 /* A NAMELIST is a sequence of names, separated by '\0', and terminated
00150    by an empty name (i.e. by "\0\0").  */
00151 
00152 typedef const char *namelist;
00153 
00154 /* The following macros provide the bits for symbol_flags.  */
00155 typedef int symbol_flags;
00156 
00157 /* Used to mark names defined in the ANSI/ISO C standard.  */
00158 #define ANSI_SYMBOL 1
00159 
00160 /* We no longer massage include files for POSIX or XOPEN symbols,
00161    as there are now several versions of the POSIX and XOPEN standards,
00162    and it would be a maintenance nightmare for us to track them all.
00163    Better to be compatible with the system include files.  */
00164 /*#define ADD_MISSING_POSIX 1 */
00165 /*#define ADD_MISSING_XOPEN 1 */
00166 
00167 #if ADD_MISSING_POSIX
00168 /* Used to mark names defined in the Posix.1 or Posix.2 standard.  */
00169 #define POSIX1_SYMBOL 2
00170 #define POSIX2_SYMBOL 4
00171 #else
00172 #define POSIX1_SYMBOL 0
00173 #define POSIX2_SYMBOL 0
00174 #endif
00175 
00176 #if ADD_MISSING_XOPEN
00177 /* Used to mark names defined in X/Open Portability Guide.  */
00178 #define XOPEN_SYMBOL 8
00179 /* Used to mark names defined in X/Open UNIX Extensions.  */
00180 #define XOPEN_EXTENDED_SYMBOL 16
00181 #else
00182 #define XOPEN_SYMBOL 0
00183 #define XOPEN_EXTENDED_SYMBOL 0
00184 #endif
00185 
00186 /* Used to indicate names that are not functions */
00187 #define MACRO_SYMBOL 512
00188 
00189 struct symbol_list {
00190   symbol_flags flags;
00191   namelist names;
00192 };
00193 
00194 #define SYMBOL_TABLE_SIZE 10
00195 struct symbol_list symbol_table[SYMBOL_TABLE_SIZE];
00196 int cur_symbol_table_size;
00197 
00198 static void add_symbols PARAMS ((symbol_flags, namelist));
00199 static struct fn_decl *lookup_std_proto PARAMS ((const char *, int));
00200 static void write_lbrac PARAMS ((void));
00201 static void recognized_macro PARAMS ((const char *));
00202 static void check_macro_names PARAMS ((cpp_reader *, namelist));
00203 static void read_scan_file PARAMS ((char *, int, char **));
00204 static void write_rbrac PARAMS ((void));
00205 static int inf_skip_spaces PARAMS ((int));
00206 static int inf_read_upto PARAMS ((sstring *, int));
00207 static int inf_scan_ident PARAMS ((sstring *, int));
00208 static int check_protection PARAMS ((int *, int *));
00209 static void cb_file_change PARAMS ((cpp_reader *, const struct line_map *));
00210 
00211 static void
00212 add_symbols (flags, names)
00213      symbol_flags flags;
00214      namelist names;
00215 {
00216   symbol_table[cur_symbol_table_size].flags = flags;
00217   symbol_table[cur_symbol_table_size].names = names;
00218   cur_symbol_table_size++;
00219   if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE)
00220     fatal ("too many calls to add_symbols");
00221   symbol_table[cur_symbol_table_size].names = NULL; /* Termination.  */
00222 }
00223 
00224 struct std_include_entry {
00225   const char *const name;
00226   const symbol_flags flags;
00227   const namelist names;
00228 };
00229 
00230 const char NONE[] = "";  /* The empty namelist.  */
00231 
00232 /* Special name to indicate a continuation line in std_include_table.  */
00233 const char CONTINUED[] = "";
00234 
00235 const struct std_include_entry *include_entry;
00236 
00237 const struct std_include_entry std_include_table [] = {
00238   { "ctype.h", ANSI_SYMBOL,
00239       "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\
00240 isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" },
00241 
00242   { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"},
00243 
00244   { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" },
00245 
00246   /* ANSI_SYMBOL is wrong, but ...  */
00247   { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\
00248 mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\
00249 scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\
00250 waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\
00251 wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" },
00252 
00253   { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" },
00254 
00255   /* Maybe also "getgrent fgetgrent setgrent endgrent" */
00256   { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" },
00257 
00258 /*{ "limit.h", ... provided by gcc }, */
00259 
00260   { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" },
00261 
00262   { "math.h", ANSI_SYMBOL,
00263       "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\
00264 fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\
00265 tan\0tanh\0" },
00266 
00267   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" },
00268 
00269   { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" },
00270 
00271   /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf.  */
00272   { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" },
00273 
00274   /* Left out signal() - its prototype is too complex for us!
00275      Also left out "sigaction sigaddset sigdelset sigemptyset
00276      sigfillset sigismember sigpending sigprocmask sigsuspend"
00277      because these need sigset_t or struct sigaction.
00278      Most systems that provide them will also declare them.  */
00279   { "signal.h", ANSI_SYMBOL, "kill\0raise\0" },
00280 
00281   { "stdio.h", ANSI_SYMBOL,
00282       "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\
00283 fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\
00284 fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\
00285 printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\
00286 setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\
00287 tmpnam\0ungetc\0" },
00288   { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" },
00289   { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" },  /* I think ...  */
00290 /* Should perhaps also handle NULL, EOF, ... ? */
00291 
00292   /* "div ldiv", - ignored because these depend on div_t, ldiv_t
00293      ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
00294      Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
00295      Should perhaps also add NULL */
00296   { "stdlib.h", ANSI_SYMBOL,
00297       "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\
00298 exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\
00299 srand\0strtod\0strtol\0strtoul\0system\0" },
00300   { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" },
00301 
00302   { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\
00303 strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\
00304 strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\
00305 strtok\0strxfrm\0" },
00306 /* Should perhaps also add NULL and size_t */
00307 
00308   { "strings.h", XOPEN_EXTENDED_SYMBOL,
00309       "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" },
00310 
00311   { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
00312 
00313   /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines
00314      ioctl in <strops.h>.  However, many systems have it is sys/ioctl.h,
00315      and many systems do have <sys/ioctl.h> but not <strops.h>.  */
00316   { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" },
00317 
00318   { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" },
00319 
00320   { "sys/stat.h", POSIX1_SYMBOL,
00321       "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" },
00322   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
00323       "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\
00324 S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" },
00325   { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" },
00326 
00327 #if 0
00328 /* How do we handle fd_set? */
00329   { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" },
00330   { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" },
00331 #endif
00332 
00333   { "sys/times.h", POSIX1_SYMBOL, "times\0" },
00334   /* "sys/types.h" add types (not in old g++-include) */
00335 
00336   { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" },
00337 
00338   { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" },
00339   { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL,
00340       "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\
00341 WTERMSIG\0WNOHANG\0WNOTRACED\0" },
00342 
00343   { "tar.h", POSIX1_SYMBOL, NONE },
00344 
00345   { "termios.h", POSIX1_SYMBOL,
00346       "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" },
00347 
00348   { "time.h", ANSI_SYMBOL,
00349       "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" },
00350 
00351   { "unistd.h", POSIX1_SYMBOL,
00352       "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\
00353 dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\
00354 getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\
00355 getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\
00356 setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\
00357 ttyname\0unlink\0write\0" },
00358   { CONTINUED, POSIX2_SYMBOL, "getopt\0" },
00359   { CONTINUED, XOPEN_EXTENDED_SYMBOL,
00360       "lockf\0gethostid\0gethostname\0readlink\0symlink\0" },
00361 
00362   { "utime.h", POSIX1_SYMBOL, "utime\0" },
00363 
00364   { NULL, 0, NONE }
00365 };
00366 
00367 enum special_file special_file_handling = no_special;
00368 
00369 /* They are set if the corresponding macro has been seen.  */
00370 /* The following are only used when handling sys/stat.h */
00371 int seen_S_IFBLK = 0, seen_S_ISBLK  = 0;
00372 int seen_S_IFCHR = 0, seen_S_ISCHR  = 0;
00373 int seen_S_IFDIR = 0, seen_S_ISDIR  = 0;
00374 int seen_S_IFIFO = 0, seen_S_ISFIFO = 0;
00375 int seen_S_IFLNK = 0, seen_S_ISLNK  = 0;
00376 int seen_S_IFREG = 0, seen_S_ISREG  = 0;
00377 /* The following are only used when handling errno.h */
00378 int seen_errno = 0;
00379 /* The following are only used when handling stdlib.h */
00380 int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0;
00381 
00382 struct obstack scan_file_obstack;
00383 
00384 /* NOTE:  If you edit this, also edit gen-protos.c !! */
00385 
00386 static struct fn_decl *
00387 lookup_std_proto (name, name_length)
00388      const char *name;
00389      int name_length;
00390 {
00391   int i = hashstr (name, name_length) % HASH_SIZE;
00392   int i0 = i;
00393   for (;;)
00394     {
00395       struct fn_decl *fn;
00396       if (hash_tab[i] == 0)
00397   return NULL;
00398       fn = &std_protos[hash_tab[i]];
00399       if ((int) strlen (fn->fname) == name_length
00400     && strncmp (fn->fname, name, name_length) == 0)
00401   return fn;
00402       i = (i+1) % HASH_SIZE;
00403       if (i == i0)
00404   abort ();
00405     }
00406 }
00407 
00408 char *inc_filename;
00409 int inc_filename_length;
00410 const char *progname = "fix-header";
00411 FILE *outf;
00412 sstring line;
00413 
00414 int lbrac_line, rbrac_line;
00415 
00416 int required_unseen_count = 0;
00417 int required_other = 0;
00418 
00419 static void
00420 write_lbrac ()
00421 {
00422 
00423 #if ADD_MISSING_EXTERN_C
00424   if (missing_extern_C_count + required_unseen_count > 0)
00425     fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
00426 #endif
00427 
00428   if (partial_count)
00429     {
00430       fprintf (outf, "#ifndef _PARAMS\n");
00431       fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n");
00432       fprintf (outf, "#define _PARAMS(ARGS) ARGS\n");
00433       fprintf (outf, "#else\n");
00434       fprintf (outf, "#define _PARAMS(ARGS) ()\n");
00435       fprintf (outf, "#endif\n#endif /* _PARAMS */\n");
00436     }
00437 }
00438 
00439 struct partial_proto
00440 {
00441   struct partial_proto *next;
00442   struct fn_decl *fn;
00443   int line_seen;
00444 };
00445 
00446 struct partial_proto *partial_proto_list = NULL;
00447 
00448 struct partial_proto required_dummy_proto, seen_dummy_proto;
00449 #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto)
00450 #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto)
00451 #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto)
00452 #define SEEN(FN) ((FN)->partial == &seen_dummy_proto)
00453 
00454 static void
00455 recognized_macro (fname)
00456      const char *fname;
00457 {
00458   /* The original include file defines fname as a macro.  */
00459   struct fn_decl *fn = lookup_std_proto (fname, strlen (fname));
00460 
00461   /* Since fname is a macro, don't require a prototype for it.  */
00462   if (fn)
00463     {
00464       if (REQUIRED (fn))
00465   required_unseen_count--;
00466       SET_SEEN (fn);
00467     }
00468 
00469   switch (special_file_handling)
00470     {
00471     case errno_h:
00472       if (strcmp (fname, "errno") == 0 && !seen_errno)
00473   seen_errno = 1, required_other--;
00474       break;
00475     case stdlib_h:
00476       if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE)
00477   seen_EXIT_FAILURE = 1, required_other--;
00478       if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS)
00479   seen_EXIT_SUCCESS = 1, required_other--;
00480       break;
00481     case sys_stat_h:
00482       if (fname[0] == 'S' && fname[1] == '_')
00483   {
00484     if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++;
00485     else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++;
00486     else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++;
00487     else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++;
00488     else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++;
00489     else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++;
00490     else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++;
00491     else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++;
00492     else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++;
00493     else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++;
00494     else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++;
00495     else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++;
00496   }
00497       break;
00498 
00499     default:
00500       break;
00501     }
00502 }
00503 
00504 void
00505 recognized_extern (name)
00506      const cpp_token *name;
00507 {
00508   switch (special_file_handling)
00509     {
00510     case errno_h:
00511       if (cpp_ideq (name, "errno"))
00512   seen_errno = 1, required_other--;
00513       break;
00514 
00515     default:
00516       break;
00517     }
00518 }
00519 
00520 /* Called by scan_decls if it saw a function definition for a function
00521    named FNAME.  KIND is 'I' for an inline function; 'F' if a normal
00522    function declaration preceded by 'extern "C"' (or nested inside
00523    'extern "C"' braces); or 'f' for other function declarations.  */
00524 
00525 void
00526 recognized_function (fname, line, kind, have_arg_list)
00527      const cpp_token *fname;
00528      unsigned int line;
00529      int kind; /* One of 'f' 'F' or 'I' */
00530      int have_arg_list;
00531 {
00532   struct partial_proto *partial;
00533   int i;
00534   struct fn_decl *fn;
00535 #if ADD_MISSING_EXTERN_C
00536   if (kind == 'f')
00537     missing_extern_C_count++;
00538 #endif
00539 
00540   fn = lookup_std_proto ((const char *) NODE_NAME (fname->val.node),
00541        NODE_LEN (fname->val.node));
00542 
00543   /* Remove the function from the list of required function.  */
00544   if (fn)
00545     {
00546       if (REQUIRED (fn))
00547   required_unseen_count--;
00548       SET_SEEN (fn);
00549     }
00550 
00551   /* If we have a full prototype, we're done.  */
00552   if (have_arg_list)
00553     return;
00554 
00555   if (kind == 'I')  /* don't edit inline function */
00556     return;
00557 
00558   /* If the partial prototype was included from some other file,
00559      we don't need to patch it up (in this run).  */
00560   i = strlen (cur_file);
00561   if (i < inc_filename_length
00562       || strcmp (inc_filename, cur_file + (i - inc_filename_length)) != 0)
00563     return;
00564 
00565   if (fn == NULL)
00566     return;
00567   if (fn->params[0] == '\0')
00568     return;
00569 
00570   /* We only have a partial function declaration,
00571      so remember that we have to add a complete prototype.  */
00572   partial_count++;
00573   partial = (struct partial_proto *)
00574     obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto));
00575   partial->line_seen = line;
00576   partial->fn = fn;
00577   fn->partial = partial;
00578   partial->next = partial_proto_list;
00579   partial_proto_list = partial;
00580   if (verbose)
00581     {
00582       fprintf (stderr, "(%s: %s non-prototype function declaration.)\n",
00583          inc_filename, fn->fname);
00584     }
00585 }
00586 
00587 /* For any name in NAMES that is defined as a macro,
00588    call recognized_macro on it.  */
00589 
00590 static void
00591 check_macro_names (pfile, names)
00592      cpp_reader *pfile;
00593      namelist names;
00594 {
00595   size_t len;
00596   while (*names)
00597     {
00598       len = strlen (names);
00599       if (cpp_defined (pfile, (const unsigned char *)names, len))
00600   recognized_macro (names);
00601       names += len + 1;
00602     }
00603 }
00604 
00605 static void
00606 cb_file_change (pfile, map)
00607      cpp_reader *pfile ATTRIBUTE_UNUSED;
00608      const struct line_map *map;
00609 {
00610   /* Just keep track of current file name.  */
00611   cur_file = map->to_file;
00612 }
00613 
00614 static void
00615 read_scan_file (in_fname, argc, argv)
00616      char *in_fname;
00617      int argc;
00618      char **argv;
00619 {
00620   cpp_reader *scan_in;
00621   cpp_callbacks *cb;
00622   cpp_options *options;
00623   struct fn_decl *fn;
00624   int i;
00625   struct symbol_list *cur_symbols;
00626 
00627   obstack_init (&scan_file_obstack);
00628 
00629   scan_in = cpp_create_reader (CLK_GNUC89);
00630   cb = cpp_get_callbacks (scan_in);
00631   cb->file_change = cb_file_change;
00632 
00633   /* We are going to be scanning a header file out of its proper context,
00634      so ignore warnings and errors.  */
00635   options = cpp_get_options (scan_in);
00636   options->inhibit_warnings = 1;
00637   options->inhibit_errors = 1;
00638 
00639   i = cpp_handle_options (scan_in, argc, argv);
00640   if (i < argc)
00641     cpp_error (scan_in, DL_ERROR, "invalid option `%s'", argv[i]);
00642   if (cpp_errors (scan_in))
00643     exit (FATAL_EXIT_CODE);
00644 
00645   if (! cpp_read_main_file (scan_in, in_fname, NULL))
00646     exit (FATAL_EXIT_CODE);
00647 
00648   cpp_finish_options (scan_in);
00649 
00650   /* We are scanning a system header, so mark it as such.  */
00651   cpp_make_system_header (scan_in, 1, 0);
00652 
00653   scan_decls (scan_in, argc, argv);
00654   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
00655     check_macro_names (scan_in, cur_symbols->names);
00656 
00657   /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf.
00658      If so, those functions are also required.  */
00659   if (special_file_handling == stdio_h
00660       && (fn = lookup_std_proto ("_filbuf", 7)) != NULL)
00661     {
00662       static const unsigned char getchar_call[] = "getchar();";
00663       int seen_filbuf = 0;
00664 
00665       /* Scan the macro expansion of "getchar();".  */
00666       cpp_push_buffer (scan_in, getchar_call, sizeof(getchar_call) - 1,
00667            /* from_stage3 */ true, 1);
00668       for (;;)
00669   {
00670     const cpp_token *t = cpp_get_token (scan_in);
00671 
00672     if (t->type == CPP_EOF)
00673       break;
00674     else if (cpp_ideq (t, "_filbuf"))
00675       seen_filbuf++;
00676   }
00677 
00678       if (seen_filbuf)
00679   {
00680     int need_filbuf = !SEEN (fn) && !REQUIRED (fn);
00681     struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7);
00682     int need_flsbuf
00683       = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn);
00684 
00685     /* Append "_filbuf" and/or "_flsbuf" to the required functions.  */
00686     if (need_filbuf + need_flsbuf)
00687       {
00688         const char *new_list;
00689         if (need_filbuf)
00690     SET_REQUIRED (fn);
00691         if (need_flsbuf)
00692     SET_REQUIRED (flsbuf_fn);
00693         if (need_flsbuf && need_filbuf)
00694     new_list = "_filbuf\0_flsbuf\0";
00695         else if (need_flsbuf)
00696     new_list = "_flsbuf\0";
00697         else /* if (need_flsbuf) */
00698     new_list = "_filbuf\0";
00699         add_symbols (ANSI_SYMBOL, new_list);
00700         required_unseen_count += need_filbuf + need_flsbuf;
00701       }
00702   }
00703     }
00704 
00705   if (required_unseen_count + partial_count + required_other
00706 #if ADD_MISSING_EXTERN_C
00707       + missing_extern_C_count
00708 #endif
00709       == 0)
00710     {
00711       if (verbose)
00712   fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename);
00713       exit (SUCCESS_EXIT_CODE);
00714     }
00715   if (!verbose)
00716     fprintf (stderr, "%s: fixing %s\n", progname, inc_filename);
00717   else
00718     {
00719       if (required_unseen_count)
00720   fprintf (stderr, "%s: %d missing function declarations.\n",
00721      inc_filename, required_unseen_count);
00722       if (partial_count)
00723   fprintf (stderr, "%s: %d non-prototype function declarations.\n",
00724      inc_filename, partial_count);
00725 #if ADD_MISSING_EXTERN_C
00726       if (missing_extern_C_count)
00727   fprintf (stderr,
00728      "%s: %d declarations not protected by extern \"C\".\n",
00729      inc_filename, missing_extern_C_count);
00730 #endif
00731     }
00732 }
00733 
00734 static void
00735 write_rbrac ()
00736 {
00737   struct fn_decl *fn;
00738   const char *cptr;
00739   struct symbol_list *cur_symbols;
00740 
00741   if (required_unseen_count)
00742     {
00743 #ifdef NO_IMPLICIT_EXTERN_C
00744       fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n");
00745 #endif
00746     }
00747 
00748   /* Now we print out prototypes for those functions that we haven't seen.  */
00749   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
00750     {
00751       int if_was_emitted = 0;
00752       int name_len;
00753       cptr = cur_symbols->names;
00754       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
00755   {
00756     int macro_protect = 0;
00757 
00758     if (cur_symbols->flags & MACRO_SYMBOL)
00759       continue;
00760 
00761     fn = lookup_std_proto (cptr, name_len);
00762     if (fn == NULL || !REQUIRED (fn))
00763       continue;
00764 
00765     if (!if_was_emitted)
00766       {
00767 /*        what about curses. ??? or _flsbuf/_filbuf ??? */
00768         if (cur_symbols->flags & ANSI_SYMBOL)
00769     fprintf (outf,
00770    "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n");
00771         else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL))
00772     fprintf (outf,
00773        "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\
00774     ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\
00775     : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n");
00776         else if (cur_symbols->flags & XOPEN_SYMBOL)
00777     {
00778     fprintf (outf,
00779        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
00780    || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n");
00781     }
00782         else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL)
00783     {
00784     fprintf (outf,
00785        "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\
00786    || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n");
00787     }
00788         else
00789     {
00790       fatal ("internal error for function %s", fn->fname);
00791     }
00792         if_was_emitted = 1;
00793       }
00794 
00795     /* In the case of memmove, protect in case the application
00796        defines it as a macro before including the header.  */
00797     if (!strcmp (fn->fname, "memmove")
00798         || !strcmp (fn->fname, "putc")
00799         || !strcmp (fn->fname, "getc")
00800         || !strcmp (fn->fname, "vprintf")
00801         || !strcmp (fn->fname, "vfprintf")
00802         || !strcmp (fn->fname, "vsprintf")
00803         || !strcmp (fn->fname, "rewinddir")
00804         || !strcmp (fn->fname, "abort"))
00805       macro_protect = 1;
00806 
00807     if (macro_protect)
00808       fprintf (outf, "#ifndef %s\n", fn->fname);
00809     fprintf (outf, "extern %s %s (%s);\n",
00810        fn->rtype, fn->fname, fn->params);
00811     if (macro_protect)
00812       fprintf (outf, "#endif\n");
00813   }
00814       if (if_was_emitted)
00815   fprintf (outf,
00816      "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n");
00817     }
00818   if (required_unseen_count)
00819     {
00820 #ifdef NO_IMPLICIT_EXTERN_C
00821       fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
00822 #endif
00823     }
00824 
00825   switch (special_file_handling)
00826     {
00827     case errno_h:
00828       if (!seen_errno)
00829   fprintf (outf, "extern int errno;\n");
00830       break;
00831     case stdlib_h:
00832       if (!seen_EXIT_FAILURE)
00833   fprintf (outf, "#define EXIT_FAILURE 1\n");
00834       if (!seen_EXIT_SUCCESS)
00835   fprintf (outf, "#define EXIT_SUCCESS 0\n");
00836       break;
00837     case sys_stat_h:
00838       if (!seen_S_ISBLK && seen_S_IFBLK)
00839   fprintf (outf,
00840      "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n");
00841       if (!seen_S_ISCHR && seen_S_IFCHR)
00842   fprintf (outf,
00843      "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n");
00844       if (!seen_S_ISDIR && seen_S_IFDIR)
00845   fprintf (outf,
00846      "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n");
00847       if (!seen_S_ISFIFO && seen_S_IFIFO)
00848   fprintf (outf,
00849      "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n");
00850       if (!seen_S_ISLNK && seen_S_IFLNK)
00851   fprintf (outf,
00852      "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n");
00853       if (!seen_S_ISREG && seen_S_IFREG)
00854   fprintf (outf,
00855      "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n");
00856       break;
00857 
00858     default:
00859       break;
00860     }
00861 
00862 
00863 #if ADD_MISSING_EXTERN_C
00864   if (missing_extern_C_count + required_unseen_count > 0)
00865     fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n");
00866 #endif
00867 }
00868 
00869 /* Returns 1 iff the file is properly protected from multiple inclusion:
00870    #ifndef PROTECT_NAME
00871    #define PROTECT_NAME
00872    #endif
00873 
00874  */
00875 
00876 #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF)
00877 #define INF_UNGET(c) ((c)!=EOF && inf_ptr--)
00878 
00879 static int
00880 inf_skip_spaces (c)
00881      int c;
00882 {
00883   for (;;)
00884     {
00885       if (c == ' ' || c == '\t')
00886   c = INF_GET ();
00887       else if (c == '/')
00888   {
00889     c = INF_GET ();
00890     if (c != '*')
00891       {
00892         (void) INF_UNGET (c);
00893         return '/';
00894       }
00895     c = INF_GET ();
00896     for (;;)
00897       {
00898         if (c == EOF)
00899     return EOF;
00900         else if (c != '*')
00901     {
00902       if (c == '\n')
00903         source_lineno++, lineno++;
00904       c = INF_GET ();
00905     }
00906         else if ((c = INF_GET ()) == '/')
00907     return INF_GET ();
00908       }
00909   }
00910       else
00911   break;
00912     }
00913   return c;
00914 }
00915 
00916 /* Read into STR from inf_buffer upto DELIM.  */
00917 
00918 static int
00919 inf_read_upto (str, delim)
00920      sstring *str;
00921      int delim;
00922 {
00923   int ch;
00924   for (;;)
00925     {
00926       ch = INF_GET ();
00927       if (ch == EOF || ch == delim)
00928   break;
00929       SSTRING_PUT (str, ch);
00930     }
00931   MAKE_SSTRING_SPACE (str, 1);
00932   *str->ptr = 0;
00933   return ch;
00934 }
00935 
00936 static int
00937 inf_scan_ident (s, c)
00938      sstring *s;
00939      int c;
00940 {
00941   s->ptr = s->base;
00942   if (ISIDST (c))
00943     {
00944       for (;;)
00945   {
00946     SSTRING_PUT (s, c);
00947     c = INF_GET ();
00948     if (c == EOF || !(ISIDNUM (c)))
00949       break;
00950   }
00951     }
00952   MAKE_SSTRING_SPACE (s, 1);
00953   *s->ptr = 0;
00954   return c;
00955 }
00956 
00957 /* Returns 1 if the file is correctly protected against multiple
00958    inclusion, setting *ifndef_line to the line number of the initial #ifndef
00959    and setting *endif_line to the final #endif.
00960    Otherwise return 0.  */
00961 
00962 static int
00963 check_protection (ifndef_line, endif_line)
00964      int *ifndef_line, *endif_line;
00965 {
00966   int c;
00967   int if_nesting = 1; /* Level of nesting of #if's */
00968   char *protect_name = NULL; /* Identifier following initial #ifndef */
00969   int define_seen = 0;
00970 
00971   /* Skip initial white space (including comments).  */
00972   for (;; lineno++)
00973     {
00974       c = inf_skip_spaces (' ');
00975       if (c == EOF)
00976   return 0;
00977       if (c != '\n')
00978   break;
00979     }
00980   if (c != '#')
00981     return 0;
00982   c = inf_scan_ident (&buf, inf_skip_spaces (' '));
00983   if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0)
00984     return 0;
00985 
00986   /* So far so good: We've seen an initial #ifndef.  */
00987   *ifndef_line = lineno;
00988   c = inf_scan_ident (&buf, inf_skip_spaces (c));
00989   if (SSTRING_LENGTH (&buf) == 0 || c == EOF)
00990     return 0;
00991   protect_name = xstrdup (buf.base);
00992 
00993   (void) INF_UNGET (c);
00994   c = inf_read_upto (&buf, '\n');
00995   if (c == EOF)
00996     return 0;
00997   lineno++;
00998 
00999   for (;;)
01000     {
01001       c = inf_skip_spaces (' ');
01002       if (c == EOF)
01003   return 0;
01004       if (c == '\n')
01005   {
01006     lineno++;
01007     continue;
01008   }
01009       if (c != '#')
01010   goto skip_to_eol;
01011       c = inf_scan_ident (&buf, inf_skip_spaces (' '));
01012       if (SSTRING_LENGTH (&buf) == 0)
01013   ;
01014       else if (!strcmp (buf.base, "ifndef")
01015     || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if"))
01016   {
01017     if_nesting++;
01018   }
01019       else if (!strcmp (buf.base, "endif"))
01020   {
01021     if_nesting--;
01022     if (if_nesting == 0)
01023       break;
01024   }
01025       else if (!strcmp (buf.base, "else"))
01026   {
01027     if (if_nesting == 1)
01028       return 0;
01029   }
01030       else if (!strcmp (buf.base, "define"))
01031   {
01032     c = inf_skip_spaces (c);
01033     c = inf_scan_ident (&buf, c);
01034     if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0)
01035       define_seen = 1;
01036   }
01037     skip_to_eol:
01038       for (;;)
01039   {
01040     if (c == '\n' || c == EOF)
01041       break;
01042     c = INF_GET ();
01043   }
01044       if (c == EOF)
01045   return 0;
01046       lineno++;
01047     }
01048 
01049   if (!define_seen)
01050      return 0;
01051   *endif_line = lineno;
01052   /* Skip final white space (including comments).  */
01053   for (;;)
01054     {
01055       c = inf_skip_spaces (' ');
01056       if (c == EOF)
01057   break;
01058       if (c != '\n')
01059   return 0;
01060     }
01061 
01062   return 1;
01063 }
01064 
01065 extern int main     PARAMS ((int, char **));
01066 
01067 int
01068 main (argc, argv)
01069      int argc;
01070      char **argv;
01071 {
01072   int inf_fd;
01073   struct stat sbuf;
01074   int c;
01075 #ifdef FIXPROTO_IGNORE_LIST
01076   int i;
01077 #endif
01078   const char *cptr;
01079   int ifndef_line;
01080   int endif_line;
01081   long to_read;
01082   long int inf_size;
01083   struct symbol_list *cur_symbols;
01084 
01085   if (argv[0] && argv[0][0])
01086     {
01087       char *p;
01088 
01089       progname = 0;
01090       for (p = argv[0]; *p; p++)
01091   if (*p == '/')
01092     progname = p;
01093       progname = progname ? progname+1 : argv[0];
01094     }
01095 
01096   if (argc < 4)
01097     {
01098       fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n",
01099          progname);
01100       exit (FATAL_EXIT_CODE);
01101     }
01102 
01103   inc_filename = argv[1];
01104   inc_filename_length = strlen (inc_filename);
01105 
01106 #ifdef FIXPROTO_IGNORE_LIST
01107   for (i = 0; files_to_ignore[i] != NULL; i++)
01108     {
01109       const char *const ignore_name = files_to_ignore[i];
01110       int ignore_len = strlen (ignore_name);
01111       if (strncmp (inc_filename, ignore_name, ignore_len) == 0)
01112   {
01113     if (ignore_name[ignore_len-1] == '/'
01114         || inc_filename[ignore_len] == '\0')
01115       {
01116         if (verbose)
01117     fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename);
01118         exit (SUCCESS_EXIT_CODE);
01119       }
01120   }
01121 
01122     }
01123 #endif
01124 
01125   if (strcmp (inc_filename, "sys/stat.h") == 0)
01126     special_file_handling = sys_stat_h;
01127   else if (strcmp (inc_filename, "errno.h") == 0)
01128     special_file_handling = errno_h, required_other++;
01129   else if (strcmp (inc_filename, "stdlib.h") == 0)
01130     special_file_handling = stdlib_h, required_other+=2;
01131   else if (strcmp (inc_filename, "stdio.h") == 0)
01132     special_file_handling = stdio_h;
01133   include_entry = std_include_table;
01134   while (include_entry->name != NULL
01135    && ((strcmp (include_entry->name, CONTINUED) == 0)
01136        || strcmp (inc_filename, include_entry->name) != 0))
01137     include_entry++;
01138 
01139   if (include_entry->name != NULL)
01140     {
01141       const struct std_include_entry *entry;
01142       cur_symbol_table_size = 0;
01143       for (entry = include_entry; ;)
01144   {
01145     if (entry->flags)
01146       add_symbols (entry->flags, entry->names);
01147     entry++;
01148     if (!entry->name || strcmp (entry->name, CONTINUED) != 0)
01149       break;
01150   }
01151     }
01152   else
01153     symbol_table[0].names = NULL;
01154 
01155   /* Count and mark the prototypes required for this include file.  */
01156   for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++)
01157     {
01158       int name_len;
01159       if (cur_symbols->flags & MACRO_SYMBOL)
01160   continue;
01161       cptr = cur_symbols->names;
01162       for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1)
01163   {
01164     struct fn_decl *fn = lookup_std_proto (cptr, name_len);
01165     required_unseen_count++;
01166     if (fn == NULL)
01167       fprintf (stderr, "Internal error:  No prototype for %s\n", cptr);
01168     else
01169       SET_REQUIRED (fn);
01170   }
01171     }
01172 
01173   read_scan_file (argv[2], argc - 4, argv + 4);
01174 
01175   inf_fd = open (argv[2], O_RDONLY, 0666);
01176   if (inf_fd < 0)
01177     {
01178       fprintf (stderr, "%s: Cannot open '%s' for reading -",
01179          progname, argv[2]);
01180       perror (NULL);
01181       exit (FATAL_EXIT_CODE);
01182     }
01183   if (fstat (inf_fd, &sbuf) < 0)
01184     {
01185       fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]);
01186       perror (NULL);
01187       exit (FATAL_EXIT_CODE);
01188     }
01189   inf_size = sbuf.st_size;
01190   inf_buffer = (char *) xmalloc (inf_size + 2);
01191   inf_ptr = inf_buffer;
01192 
01193   to_read = inf_size;
01194   while (to_read > 0)
01195     {
01196       long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read);
01197       if (i < 0)
01198   {
01199     fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]);
01200     perror (NULL);
01201     exit (FATAL_EXIT_CODE);
01202   }
01203       if (i == 0)
01204   {
01205     inf_size -= to_read;
01206     break;
01207   }
01208       to_read -= i;
01209     }
01210 
01211   close (inf_fd);
01212 
01213   /* Inf_size may have changed if read was short (as on VMS) */
01214   inf_buffer[inf_size] = '\n';
01215   inf_buffer[inf_size + 1] = '\0';
01216   inf_limit = inf_buffer + inf_size;
01217 
01218   /* If file doesn't end with '\n', add one.  */
01219   if (inf_limit > inf_buffer && inf_limit[-1] != '\n')
01220     inf_limit++;
01221 
01222   unlink (argv[3]);
01223   outf = fopen (argv[3], "w");
01224   if (outf == NULL)
01225     {
01226       fprintf (stderr, "%s: Cannot open '%s' for writing -",
01227          progname, argv[3]);
01228       perror (NULL);
01229       exit (FATAL_EXIT_CODE);
01230     }
01231 
01232   lineno = 1;
01233 
01234   if (check_protection (&ifndef_line, &endif_line))
01235     {
01236       lbrac_line = ifndef_line+1;
01237       rbrac_line = endif_line;
01238     }
01239   else
01240     {
01241       lbrac_line = 1;
01242       rbrac_line = -1;
01243     }
01244 
01245   /* Reset input file.  */
01246   inf_ptr = inf_buffer;
01247   lineno = 1;
01248 
01249   for (;;)
01250     {
01251       if (lineno == lbrac_line)
01252   write_lbrac ();
01253       if (lineno == rbrac_line)
01254   write_rbrac ();
01255       for (;;)
01256   {
01257     struct fn_decl *fn;
01258     c = INF_GET ();
01259     if (c == EOF)
01260       break;
01261     if (ISIDST (c))
01262       {
01263         c = inf_scan_ident (&buf, c);
01264         (void) INF_UNGET (c);
01265         fputs (buf.base, outf);
01266         fn = lookup_std_proto (buf.base, strlen (buf.base));
01267         /* We only want to edit the declaration matching the one
01268      seen by scan-decls, as there can be multiple
01269      declarations, selected by #ifdef __STDC__ or whatever.  */
01270         if (fn && fn->partial && fn->partial->line_seen == lineno)
01271     {
01272       c = inf_skip_spaces (' ');
01273       if (c == EOF)
01274         break;
01275       if (c == '(')
01276         {
01277           c = inf_skip_spaces (' ');
01278           if (c == ')')
01279       {
01280         fprintf (outf, " _PARAMS((%s))", fn->params);
01281       }
01282           else
01283       {
01284         putc ('(', outf);
01285         (void) INF_UNGET (c);
01286       }
01287         }
01288       else
01289         fprintf (outf, " %c", c);
01290     }
01291       }
01292     else
01293       {
01294         putc (c, outf);
01295         if (c == '\n')
01296     break;
01297       }
01298   }
01299       if (c == EOF)
01300   break;
01301       lineno++;
01302     }
01303   if (rbrac_line < 0)
01304     write_rbrac ();
01305 
01306   fclose (outf);
01307 
01308   return 0;
01309 }
01310 
01311 
01312 static void
01313 v_fatal (str, ap)
01314   const char * str;
01315   va_list ap;
01316 {
01317   fprintf (stderr, "%s: %s: ", progname, inc_filename);
01318   vfprintf (stderr, str, ap);
01319   fprintf (stderr, "\n");
01320 
01321   exit (FATAL_EXIT_CODE);
01322 }
01323 
01324 static void
01325 fatal VPARAMS ((const char *str, ...))
01326 {
01327   VA_OPEN (ap, str);
01328   VA_FIXEDARG (ap, const char *, str);
01329 
01330   v_fatal (str, ap);
01331   VA_CLOSE (ap);
01332 }