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be1d818d | 1 | /* fix-header.c - Make C header file suitable for C++. |
c773fc10 | 2 | Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, |
0903457a | 3 | 1999, 2000, 2001 Free Software Foundation, Inc. |
41f8c0bb | 4 | |
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 | |
8 | later version. | |
9 | ||
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. | |
14 | ||
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 | |
a372a482 | 17 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
41f8c0bb | 18 | |
19 | /* This program massages a system include file (such as stdio.h), | |
65ba74c3 | 20 | into a form that is compatible with GNU C and GNU C++. |
41f8c0bb | 21 | |
22 | * extern "C" { ... } braces are added (inside #ifndef __cplusplus), | |
a2075ffb | 23 | if they seem to be needed. These prevent C++ compilers from name |
41f8c0bb | 24 | mangling the functions inside the braces. |
25 | ||
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 | |
73439ee0 | 30 | the empty parameter list with the argument list from sys-protos.h. |
41f8c0bb | 31 | |
32 | * The program can be given a list of (names of) required standard | |
c3418f42 | 33 | functions (such as fclose for stdio.h). If a required function |
41f8c0bb | 34 | is not seen in the input, then a prototype for it will be |
35 | written to the output. | |
36 | ||
37 | * If all of the non-comment code of the original file is protected | |
38 | against multiple inclusion: | |
39 | #ifndef FOO | |
40 | #define FOO | |
41 | <body of include file> | |
42 | #endif | |
43 | then extra matter added to the include file is placed inside the <body>. | |
44 | ||
45 | * If the input file is OK (nothing needs to be done); | |
46 | the output file is not written (nor removed if it exists). | |
47 | ||
48 | There are also some special actions that are done for certain | |
49 | well-known standard include files: | |
50 | ||
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 | |
54 | macros were defined. | |
55 | ||
56 | * If argv[1] is "errno.h", errno is declared if it was missing. | |
57 | ||
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. | |
61 | ||
62 | Usage: | |
ff8281e4 | 63 | fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS] |
41f8c0bb | 64 | where: |
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) | |
ff8281e4 | 70 | * OPTIONS are such as you would pass to cpp. |
41f8c0bb | 71 | |
a92771b8 | 72 | Written by Per Bothner <bothner@cygnus.com>, July 1993. */ |
41f8c0bb | 73 | |
805e22b2 | 74 | #include "bconfig.h" |
1486870d | 75 | #include "system.h" |
805e22b2 | 76 | #include "coretypes.h" |
77 | #include "tm.h" | |
41f8c0bb | 78 | #include "obstack.h" |
79 | #include "scan.h" | |
ff8281e4 | 80 | #include "cpplib.h" |
072eca60 | 81 | |
dd9977e9 | 82 | static void v_fatal PARAMS ((const char *, va_list)) ATTRIBUTE_PRINTF (1,0) ATTRIBUTE_NORETURN; |
621f6678 | 83 | static void fatal PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN; |
e7399c76 | 84 | |
ff8281e4 | 85 | sstring buf; |
58e13b61 | 86 | |
41f8c0bb | 87 | int verbose = 0; |
88 | int partial_count = 0; | |
ff8281e4 | 89 | int warnings = 0; |
90 | ||
91 | /* We no longer need to add extern "C", because cpp implicitly | |
92 | forces the standard include files to be treated as C. */ | |
93 | /*#define ADD_MISSING_EXTERN_C 1 */ | |
94 | ||
95 | #if ADD_MISSING_EXTERN_C | |
41f8c0bb | 96 | int missing_extern_C_count = 0; |
d9730104 | 97 | #endif |
41f8c0bb | 98 | |
99 | #include "xsys-protos.h" | |
100 | ||
ff8281e4 | 101 | #ifdef FIXPROTO_IGNORE_LIST |
a92771b8 | 102 | /* This is a currently unused feature. */ |
ff8281e4 | 103 | |
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.) */ | |
108 | ||
33b57a7b | 109 | static const char *const files_to_ignore[] = { |
ff8281e4 | 110 | "X11/", |
111 | FIXPROTO_IGNORE_LIST | |
112 | 0 | |
113 | }; | |
114 | #endif | |
115 | ||
a2075ffb | 116 | char *inf_buffer; |
117 | char *inf_limit; | |
118 | char *inf_ptr; | |
d7503801 | 119 | static const char *cur_file; |
a2075ffb | 120 | |
41f8c0bb | 121 | /* Certain standard files get extra treatment */ |
122 | ||
123 | enum special_file | |
124 | { | |
125 | no_special, | |
1df3cafa | 126 | #ifdef errno_h |
127 | #undef errno_h | |
128 | #endif | |
ff8281e4 | 129 | errno_h, |
1df3cafa | 130 | #ifdef stdio_h |
131 | #undef stdio_h | |
132 | #endif | |
ff8281e4 | 133 | stdio_h, |
1df3cafa | 134 | #ifdef stdlib_h |
135 | #undef stdlib_h | |
136 | #endif | |
a4cfa7e7 | 137 | stdlib_h, |
1df3cafa | 138 | #ifdef sys_stat_h |
139 | #undef sys_stat_h | |
140 | #endif | |
ff8281e4 | 141 | sys_stat_h |
142 | }; | |
143 | ||
144 | /* A NAMELIST is a sequence of names, separated by '\0', and terminated | |
a92771b8 | 145 | by an empty name (i.e. by "\0\0"). */ |
ff8281e4 | 146 | |
a92771b8 | 147 | typedef const char *namelist; |
ff8281e4 | 148 | |
a92771b8 | 149 | /* The following macros provide the bits for symbol_flags. */ |
b833afc8 | 150 | typedef int symbol_flags; |
151 | ||
a92771b8 | 152 | /* Used to mark names defined in the ANSI/ISO C standard. */ |
b833afc8 | 153 | #define ANSI_SYMBOL 1 |
154 | ||
65ba74c3 | 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 */ | |
161 | ||
162 | #if ADD_MISSING_POSIX | |
a92771b8 | 163 | /* Used to mark names defined in the Posix.1 or Posix.2 standard. */ |
b833afc8 | 164 | #define POSIX1_SYMBOL 2 |
165 | #define POSIX2_SYMBOL 4 | |
65ba74c3 | 166 | #else |
167 | #define POSIX1_SYMBOL 0 | |
168 | #define POSIX2_SYMBOL 0 | |
169 | #endif | |
b833afc8 | 170 | |
65ba74c3 | 171 | #if ADD_MISSING_XOPEN |
a92771b8 | 172 | /* Used to mark names defined in X/Open Portability Guide. */ |
a4cfa7e7 | 173 | #define XOPEN_SYMBOL 8 |
a92771b8 | 174 | /* Used to mark names defined in X/Open UNIX Extensions. */ |
a4cfa7e7 | 175 | #define XOPEN_EXTENDED_SYMBOL 16 |
65ba74c3 | 176 | #else |
177 | #define XOPEN_SYMBOL 0 | |
178 | #define XOPEN_EXTENDED_SYMBOL 0 | |
179 | #endif | |
a4cfa7e7 | 180 | |
b833afc8 | 181 | /* Used to indicate names that are not functions */ |
a4cfa7e7 | 182 | #define MACRO_SYMBOL 512 |
b833afc8 | 183 | |
184 | struct symbol_list { | |
185 | symbol_flags flags; | |
186 | namelist names; | |
ff8281e4 | 187 | }; |
188 | ||
b833afc8 | 189 | #define SYMBOL_TABLE_SIZE 10 |
190 | struct symbol_list symbol_table[SYMBOL_TABLE_SIZE]; | |
191 | int cur_symbol_table_size; | |
ff8281e4 | 192 | |
621f6678 | 193 | static void add_symbols PARAMS ((symbol_flags, namelist)); |
194 | static struct fn_decl *lookup_std_proto PARAMS ((const char *, int)); | |
195 | static void write_lbrac PARAMS ((void)); | |
196 | static void recognized_macro PARAMS ((const char *)); | |
197 | static void check_macro_names PARAMS ((cpp_reader *, namelist)); | |
198 | static void read_scan_file PARAMS ((char *, int, char **)); | |
199 | static void write_rbrac PARAMS ((void)); | |
200 | static int inf_skip_spaces PARAMS ((int)); | |
201 | static int inf_read_upto PARAMS ((sstring *, int)); | |
202 | static int inf_scan_ident PARAMS ((sstring *, int)); | |
203 | static int check_protection PARAMS ((int *, int *)); | |
8e1df3e5 | 204 | static void cb_file_change PARAMS ((cpp_reader *, const struct line_map *)); |
47cefa47 | 205 | |
206 | static void | |
b833afc8 | 207 | add_symbols (flags, names) |
208 | symbol_flags flags; | |
ff8281e4 | 209 | namelist names; |
210 | { | |
b833afc8 | 211 | symbol_table[cur_symbol_table_size].flags = flags; |
212 | symbol_table[cur_symbol_table_size].names = names; | |
213 | cur_symbol_table_size++; | |
214 | if (cur_symbol_table_size >= SYMBOL_TABLE_SIZE) | |
215 | fatal ("too many calls to add_symbols"); | |
a92771b8 | 216 | symbol_table[cur_symbol_table_size].names = NULL; /* Termination. */ |
ff8281e4 | 217 | } |
218 | ||
b833afc8 | 219 | struct std_include_entry { |
33b57a7b | 220 | const char *const name; |
221 | const symbol_flags flags; | |
222 | const namelist names; | |
b833afc8 | 223 | }; |
224 | ||
a92771b8 | 225 | const char NONE[] = ""; /* The empty namelist. */ |
b833afc8 | 226 | |
a92771b8 | 227 | /* Special name to indicate a continuation line in std_include_table. */ |
b833afc8 | 228 | const char CONTINUED[] = ""; |
ff8281e4 | 229 | |
33b57a7b | 230 | const struct std_include_entry *include_entry; |
ff8281e4 | 231 | |
33b57a7b | 232 | const struct std_include_entry std_include_table [] = { |
b833afc8 | 233 | { "ctype.h", ANSI_SYMBOL, |
ff8281e4 | 234 | "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\ |
b833afc8 | 235 | isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0" }, |
ff8281e4 | 236 | |
b833afc8 | 237 | { "dirent.h", POSIX1_SYMBOL, "closedir\0opendir\0readdir\0rewinddir\0"}, |
ff8281e4 | 238 | |
b833afc8 | 239 | { "errno.h", ANSI_SYMBOL|MACRO_SYMBOL, "errno\0" }, |
ff8281e4 | 240 | |
a92771b8 | 241 | /* ANSI_SYMBOL is wrong, but ... */ |
b833afc8 | 242 | { "curses.h", ANSI_SYMBOL, "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\ |
ff8281e4 | 243 | mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\ |
244 | scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\ | |
245 | waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\ | |
b833afc8 | 246 | wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0" }, |
ff8281e4 | 247 | |
b833afc8 | 248 | { "fcntl.h", POSIX1_SYMBOL, "creat\0fcntl\0open\0" }, |
ff8281e4 | 249 | |
250 | /* Maybe also "getgrent fgetgrent setgrent endgrent" */ | |
b833afc8 | 251 | { "grp.h", POSIX1_SYMBOL, "getgrgid\0getgrnam\0" }, |
ff8281e4 | 252 | |
253 | /*{ "limit.h", ... provided by gcc }, */ | |
254 | ||
b833afc8 | 255 | { "locale.h", ANSI_SYMBOL, "localeconv\0setlocale\0" }, |
ff8281e4 | 256 | |
b833afc8 | 257 | { "math.h", ANSI_SYMBOL, |
258 | "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\ | |
ff8281e4 | 259 | fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\ |
b833afc8 | 260 | tan\0tanh\0" }, |
261 | ||
262 | { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "HUGE_VAL\0" }, | |
ff8281e4 | 263 | |
b833afc8 | 264 | { "pwd.h", POSIX1_SYMBOL, "getpwnam\0getpwuid\0" }, |
ff8281e4 | 265 | |
a92771b8 | 266 | /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */ |
b833afc8 | 267 | { "setjmp.h", ANSI_SYMBOL, "longjmp\0setjmp\0" }, |
ff8281e4 | 268 | |
269 | /* Left out signal() - its prototype is too complex for us! | |
270 | Also left out "sigaction sigaddset sigdelset sigemptyset | |
271 | sigfillset sigismember sigpending sigprocmask sigsuspend" | |
272 | because these need sigset_t or struct sigaction. | |
a92771b8 | 273 | Most systems that provide them will also declare them. */ |
b833afc8 | 274 | { "signal.h", ANSI_SYMBOL, "kill\0raise\0" }, |
ff8281e4 | 275 | |
b833afc8 | 276 | { "stdio.h", ANSI_SYMBOL, |
277 | "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\ | |
ff8281e4 | 278 | fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\ |
65ba74c3 | 279 | fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0perror\0\ |
ff8281e4 | 280 | printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\ |
281 | setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\ | |
b833afc8 | 282 | tmpnam\0ungetc\0" }, |
283 | { CONTINUED, POSIX1_SYMBOL, "fdopen\0fileno\0" }, | |
a92771b8 | 284 | { CONTINUED, POSIX2_SYMBOL, "pclose\0popen\0" }, /* I think ... */ |
ff8281e4 | 285 | /* Should perhaps also handle NULL, EOF, ... ? */ |
286 | ||
287 | /* "div ldiv", - ignored because these depend on div_t, ldiv_t | |
288 | ignore these: "mblen mbstowcs mbstowc wcstombs wctomb" | |
289 | Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions. | |
290 | Should perhaps also add NULL */ | |
b833afc8 | 291 | { "stdlib.h", ANSI_SYMBOL, |
292 | "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\ | |
ff8281e4 | 293 | exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\ |
b833afc8 | 294 | srand\0strtod\0strtol\0strtoul\0system\0" }, |
a4cfa7e7 | 295 | { CONTINUED, ANSI_SYMBOL|MACRO_SYMBOL, "EXIT_FAILURE\0EXIT_SUCCESS\0" }, |
ff8281e4 | 296 | |
b833afc8 | 297 | { "string.h", ANSI_SYMBOL, "memchr\0memcmp\0memcpy\0memmove\0memset\0\ |
ff8281e4 | 298 | strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\ |
299 | strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\ | |
b833afc8 | 300 | strtok\0strxfrm\0" }, |
ff8281e4 | 301 | /* Should perhaps also add NULL and size_t */ |
302 | ||
a4cfa7e7 | 303 | { "strings.h", XOPEN_EXTENDED_SYMBOL, |
304 | "bcmp\0bcopy\0bzero\0ffs\0index\0rindex\0strcasecmp\0strncasecmp\0" }, | |
305 | ||
306 | { "strops.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" }, | |
307 | ||
308 | /* Actually, XPG4 does not seem to have <sys/ioctl.h>, but defines | |
309 | ioctl in <strops.h>. However, many systems have it is sys/ioctl.h, | |
a92771b8 | 310 | and many systems do have <sys/ioctl.h> but not <strops.h>. */ |
a4cfa7e7 | 311 | { "sys/ioctl.h", XOPEN_EXTENDED_SYMBOL, "ioctl\0" }, |
312 | ||
313 | { "sys/socket.h", XOPEN_EXTENDED_SYMBOL, "socket\0" }, | |
314 | ||
b833afc8 | 315 | { "sys/stat.h", POSIX1_SYMBOL, |
316 | "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0" }, | |
317 | { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL, | |
ff8281e4 | 318 | "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\ |
319 | S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" }, | |
a4cfa7e7 | 320 | { CONTINUED, XOPEN_EXTENDED_SYMBOL, "fchmod\0" }, |
321 | ||
322 | #if 0 | |
323 | /* How do we handle fd_set? */ | |
324 | { "sys/time.h", XOPEN_EXTENDED_SYMBOL, "select\0" }, | |
325 | { "sys/select.h", XOPEN_EXTENDED_SYMBOL /* fake */, "select\0" }, | |
326 | #endif | |
ff8281e4 | 327 | |
b833afc8 | 328 | { "sys/times.h", POSIX1_SYMBOL, "times\0" }, |
ff8281e4 | 329 | /* "sys/types.h" add types (not in old g++-include) */ |
330 | ||
b833afc8 | 331 | { "sys/utsname.h", POSIX1_SYMBOL, "uname\0" }, |
ff8281e4 | 332 | |
b833afc8 | 333 | { "sys/wait.h", POSIX1_SYMBOL, "wait\0waitpid\0" }, |
334 | { CONTINUED, POSIX1_SYMBOL|MACRO_SYMBOL, | |
ff8281e4 | 335 | "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\ |
336 | WTERMSIG\0WNOHANG\0WNOTRACED\0" }, | |
337 | ||
b833afc8 | 338 | { "tar.h", POSIX1_SYMBOL, NONE }, |
ff8281e4 | 339 | |
b833afc8 | 340 | { "termios.h", POSIX1_SYMBOL, |
341 | "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0" }, | |
ff8281e4 | 342 | |
b833afc8 | 343 | { "time.h", ANSI_SYMBOL, |
344 | "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0" }, | |
ff8281e4 | 345 | |
b833afc8 | 346 | { "unistd.h", POSIX1_SYMBOL, |
347 | "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\ | |
ff8281e4 | 348 | dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\ |
b833afc8 | 349 | getcwd\0getegid\0geteuid\0getgid\0getlogin\0getpgrp\0getpid\0\ |
ff8281e4 | 350 | getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\ |
351 | setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\ | |
b833afc8 | 352 | ttyname\0unlink\0write\0" }, |
353 | { CONTINUED, POSIX2_SYMBOL, "getopt\0" }, | |
a4cfa7e7 | 354 | { CONTINUED, XOPEN_EXTENDED_SYMBOL, |
0b3436f1 | 355 | "lockf\0gethostid\0gethostname\0readlink\0symlink\0" }, |
a4cfa7e7 | 356 | |
357 | { "utime.h", POSIX1_SYMBOL, "utime\0" }, | |
ff8281e4 | 358 | |
b833afc8 | 359 | { NULL, 0, NONE } |
41f8c0bb | 360 | }; |
361 | ||
362 | enum special_file special_file_handling = no_special; | |
363 | ||
a92771b8 | 364 | /* They are set if the corresponding macro has been seen. */ |
a4cfa7e7 | 365 | /* The following are only used when handling sys/stat.h */ |
41f8c0bb | 366 | int seen_S_IFBLK = 0, seen_S_ISBLK = 0; |
367 | int seen_S_IFCHR = 0, seen_S_ISCHR = 0; | |
368 | int seen_S_IFDIR = 0, seen_S_ISDIR = 0; | |
369 | int seen_S_IFIFO = 0, seen_S_ISFIFO = 0; | |
370 | int seen_S_IFLNK = 0, seen_S_ISLNK = 0; | |
371 | int seen_S_IFREG = 0, seen_S_ISREG = 0; | |
a4cfa7e7 | 372 | /* The following are only used when handling errno.h */ |
373 | int seen_errno = 0; | |
374 | /* The following are only used when handling stdlib.h */ | |
375 | int seen_EXIT_FAILURE = 0, seen_EXIT_SUCCESS = 0; | |
54244b90 | 376 | \f |
41f8c0bb | 377 | struct obstack scan_file_obstack; |
378 | ||
379 | /* NOTE: If you edit this, also edit gen-protos.c !! */ | |
a92771b8 | 380 | |
47cefa47 | 381 | static struct fn_decl * |
ff8281e4 | 382 | lookup_std_proto (name, name_length) |
383 | const char *name; | |
384 | int name_length; | |
41f8c0bb | 385 | { |
745272db | 386 | int i = hashstr (name, name_length) % HASH_SIZE; |
41f8c0bb | 387 | int i0 = i; |
388 | for (;;) | |
389 | { | |
390 | struct fn_decl *fn; | |
391 | if (hash_tab[i] == 0) | |
392 | return NULL; | |
393 | fn = &std_protos[hash_tab[i]]; | |
ba1c8484 | 394 | if ((int) strlen (fn->fname) == name_length |
ff8281e4 | 395 | && strncmp (fn->fname, name, name_length) == 0) |
41f8c0bb | 396 | return fn; |
397 | i = (i+1) % HASH_SIZE; | |
398 | if (i == i0) | |
9ebdb4ae | 399 | abort (); |
41f8c0bb | 400 | } |
401 | } | |
402 | ||
403 | char *inc_filename; | |
404 | int inc_filename_length; | |
47cefa47 | 405 | const char *progname = "fix-header"; |
41f8c0bb | 406 | FILE *outf; |
41f8c0bb | 407 | sstring line; |
408 | ||
409 | int lbrac_line, rbrac_line; | |
410 | ||
ff8281e4 | 411 | int required_unseen_count = 0; |
a4cfa7e7 | 412 | int required_other = 0; |
41f8c0bb | 413 | |
d3371fcd | 414 | static void |
41f8c0bb | 415 | write_lbrac () |
416 | { | |
d3371fcd | 417 | |
ff8281e4 | 418 | #if ADD_MISSING_EXTERN_C |
fd2e14b3 | 419 | if (missing_extern_C_count + required_unseen_count > 0) |
420 | fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); | |
d9730104 | 421 | #endif |
41f8c0bb | 422 | |
423 | if (partial_count) | |
424 | { | |
425 | fprintf (outf, "#ifndef _PARAMS\n"); | |
426 | fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n"); | |
427 | fprintf (outf, "#define _PARAMS(ARGS) ARGS\n"); | |
428 | fprintf (outf, "#else\n"); | |
429 | fprintf (outf, "#define _PARAMS(ARGS) ()\n"); | |
430 | fprintf (outf, "#endif\n#endif /* _PARAMS */\n"); | |
431 | } | |
432 | } | |
433 | ||
434 | struct partial_proto | |
435 | { | |
436 | struct partial_proto *next; | |
41f8c0bb | 437 | struct fn_decl *fn; |
438 | int line_seen; | |
439 | }; | |
440 | ||
441 | struct partial_proto *partial_proto_list = NULL; | |
442 | ||
ff8281e4 | 443 | struct partial_proto required_dummy_proto, seen_dummy_proto; |
41f8c0bb | 444 | #define REQUIRED(FN) ((FN)->partial == &required_dummy_proto) |
445 | #define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto) | |
ff8281e4 | 446 | #define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto) |
447 | #define SEEN(FN) ((FN)->partial == &seen_dummy_proto) | |
41f8c0bb | 448 | |
47cefa47 | 449 | static void |
a2075ffb | 450 | recognized_macro (fname) |
47cefa47 | 451 | const char *fname; |
41f8c0bb | 452 | { |
a92771b8 | 453 | /* The original include file defines fname as a macro. */ |
ff8281e4 | 454 | struct fn_decl *fn = lookup_std_proto (fname, strlen (fname)); |
41f8c0bb | 455 | |
a92771b8 | 456 | /* Since fname is a macro, don't require a prototype for it. */ |
ff8281e4 | 457 | if (fn) |
41f8c0bb | 458 | { |
ff8281e4 | 459 | if (REQUIRED (fn)) |
460 | required_unseen_count--; | |
461 | SET_SEEN (fn); | |
a2075ffb | 462 | } |
41f8c0bb | 463 | |
a2075ffb | 464 | switch (special_file_handling) |
465 | { | |
ff8281e4 | 466 | case errno_h: |
a4cfa7e7 | 467 | if (strcmp (fname, "errno") == 0 && !seen_errno) |
468 | seen_errno = 1, required_other--; | |
469 | break; | |
470 | case stdlib_h: | |
471 | if (strcmp (fname, "EXIT_FAILURE") == 0 && !seen_EXIT_FAILURE) | |
472 | seen_EXIT_FAILURE = 1, required_other--; | |
473 | if (strcmp (fname, "EXIT_SUCCESS") == 0 && !seen_EXIT_SUCCESS) | |
474 | seen_EXIT_SUCCESS = 1, required_other--; | |
a2075ffb | 475 | break; |
ff8281e4 | 476 | case sys_stat_h: |
a2075ffb | 477 | if (fname[0] == 'S' && fname[1] == '_') |
41f8c0bb | 478 | { |
a2075ffb | 479 | if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++; |
480 | else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++; | |
481 | else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++; | |
482 | else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++; | |
483 | else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++; | |
484 | else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++; | |
485 | else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++; | |
486 | else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++; | |
487 | else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++; | |
488 | else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++; | |
489 | else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++; | |
490 | else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++; | |
41f8c0bb | 491 | } |
65ba74c3 | 492 | break; |
493 | ||
494 | default: | |
495 | break; | |
a2075ffb | 496 | } |
497 | } | |
41f8c0bb | 498 | |
a2075ffb | 499 | void |
f80e83a9 | 500 | recognized_extern (name) |
501 | const cpp_token *name; | |
a2075ffb | 502 | { |
503 | switch (special_file_handling) | |
504 | { | |
ff8281e4 | 505 | case errno_h: |
76faa4c0 | 506 | if (cpp_ideq (name, "errno")) |
a4cfa7e7 | 507 | seen_errno = 1, required_other--; |
a2075ffb | 508 | break; |
65ba74c3 | 509 | |
510 | default: | |
511 | break; | |
a2075ffb | 512 | } |
513 | } | |
41f8c0bb | 514 | |
a2075ffb | 515 | /* Called by scan_decls if it saw a function definition for a function |
d7503801 | 516 | named FNAME. KIND is 'I' for an inline function; 'F' if a normal |
517 | function declaration preceded by 'extern "C"' (or nested inside | |
518 | 'extern "C"' braces); or 'f' for other function declarations. */ | |
41f8c0bb | 519 | |
a2075ffb | 520 | void |
d7503801 | 521 | recognized_function (fname, line, kind, have_arg_list) |
f80e83a9 | 522 | const cpp_token *fname; |
79bd622b | 523 | unsigned int line; |
a2075ffb | 524 | int kind; /* One of 'f' 'F' or 'I' */ |
ff8281e4 | 525 | int have_arg_list; |
a2075ffb | 526 | { |
527 | struct partial_proto *partial; | |
528 | int i; | |
529 | struct fn_decl *fn; | |
ff8281e4 | 530 | #if ADD_MISSING_EXTERN_C |
a2075ffb | 531 | if (kind == 'f') |
532 | missing_extern_C_count++; | |
d9730104 | 533 | #endif |
41f8c0bb | 534 | |
c86dbc5b | 535 | fn = lookup_std_proto ((const char *) NODE_NAME (fname->val.node), |
536 | NODE_LEN (fname->val.node)); | |
41f8c0bb | 537 | |
a92771b8 | 538 | /* Remove the function from the list of required function. */ |
ff8281e4 | 539 | if (fn) |
a2075ffb | 540 | { |
ff8281e4 | 541 | if (REQUIRED (fn)) |
542 | required_unseen_count--; | |
543 | SET_SEEN (fn); | |
a2075ffb | 544 | } |
f8b1eeaa | 545 | |
a92771b8 | 546 | /* If we have a full prototype, we're done. */ |
ff8281e4 | 547 | if (have_arg_list) |
a2075ffb | 548 | return; |
d3371fcd | 549 | |
a2075ffb | 550 | if (kind == 'I') /* don't edit inline function */ |
551 | return; | |
552 | ||
553 | /* If the partial prototype was included from some other file, | |
a92771b8 | 554 | we don't need to patch it up (in this run). */ |
d7503801 | 555 | i = strlen (cur_file); |
a2075ffb | 556 | if (i < inc_filename_length |
d7503801 | 557 | || strcmp (inc_filename, cur_file + (i - inc_filename_length)) != 0) |
a2075ffb | 558 | return; |
559 | ||
560 | if (fn == NULL) | |
561 | return; | |
16fbc4c3 | 562 | if (fn->params[0] == '\0') |
a2075ffb | 563 | return; |
564 | ||
565 | /* We only have a partial function declaration, | |
a92771b8 | 566 | so remember that we have to add a complete prototype. */ |
a2075ffb | 567 | partial_count++; |
a92771b8 | 568 | partial = (struct partial_proto *) |
9ebdb4ae | 569 | obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto)); |
79bd622b | 570 | partial->line_seen = line; |
a2075ffb | 571 | partial->fn = fn; |
572 | fn->partial = partial; | |
573 | partial->next = partial_proto_list; | |
574 | partial_proto_list = partial; | |
575 | if (verbose) | |
576 | { | |
577 | fprintf (stderr, "(%s: %s non-prototype function declaration.)\n", | |
f80e83a9 | 578 | inc_filename, fn->fname); |
ff8281e4 | 579 | } |
580 | } | |
581 | ||
582 | /* For any name in NAMES that is defined as a macro, | |
a92771b8 | 583 | call recognized_macro on it. */ |
ff8281e4 | 584 | |
47cefa47 | 585 | static void |
ff8281e4 | 586 | check_macro_names (pfile, names) |
307ea935 | 587 | cpp_reader *pfile; |
ff8281e4 | 588 | namelist names; |
589 | { | |
cfad5579 | 590 | size_t len; |
ff8281e4 | 591 | while (*names) |
592 | { | |
cfad5579 | 593 | len = strlen (names); |
6af24d0a | 594 | if (cpp_defined (pfile, (const unsigned char *)names, len)) |
ff8281e4 | 595 | recognized_macro (names); |
cfad5579 | 596 | names += len + 1; |
a2075ffb | 597 | } |
598 | } | |
41f8c0bb | 599 | |
d7503801 | 600 | static void |
8e1df3e5 | 601 | cb_file_change (pfile, map) |
d7503801 | 602 | cpp_reader *pfile ATTRIBUTE_UNUSED; |
8e1df3e5 | 603 | const struct line_map *map; |
d7503801 | 604 | { |
605 | /* Just keep track of current file name. */ | |
8e1df3e5 | 606 | cur_file = map->to_file; |
d7503801 | 607 | } |
608 | ||
47cefa47 | 609 | static void |
ff8281e4 | 610 | read_scan_file (in_fname, argc, argv) |
611 | char *in_fname; | |
612 | int argc; | |
613 | char **argv; | |
a2075ffb | 614 | { |
e1bcb170 | 615 | cpp_reader *scan_in; |
f5156d82 | 616 | cpp_callbacks *cb; |
617 | cpp_options *options; | |
ff8281e4 | 618 | struct fn_decl *fn; |
619 | int i; | |
19cb6b50 | 620 | struct symbol_list *cur_symbols; |
ff8281e4 | 621 | |
d3371fcd | 622 | obstack_init (&scan_file_obstack); |
41f8c0bb | 623 | |
93c44ea2 | 624 | scan_in = cpp_create_reader (CLK_GNUC89); |
f5156d82 | 625 | cb = cpp_get_callbacks (scan_in); |
626 | cb->file_change = cb_file_change; | |
46932f2c | 627 | |
eb3948d1 | 628 | /* We are going to be scanning a header file out of its proper context, |
629 | so ignore warnings and errors. */ | |
c6b36d06 | 630 | options = cpp_get_options (scan_in); |
f5156d82 | 631 | options->inhibit_warnings = 1; |
632 | options->inhibit_errors = 1; | |
633 | ||
9751c00e | 634 | i = cpp_handle_options (scan_in, argc, argv); |
b9093358 | 635 | if (i < argc) |
636 | cpp_error (scan_in, DL_ERROR, "invalid option `%s'", argv[i]); | |
b9093358 | 637 | if (cpp_errors (scan_in)) |
307ea935 | 638 | exit (FATAL_EXIT_CODE); |
639 | ||
93c44ea2 | 640 | if (! cpp_read_main_file (scan_in, in_fname, NULL)) |
307ea935 | 641 | exit (FATAL_EXIT_CODE); |
ff8281e4 | 642 | |
93c44ea2 | 643 | cpp_finish_options (scan_in); |
644 | ||
cfad5579 | 645 | /* We are scanning a system header, so mark it as such. */ |
fd944c82 | 646 | cpp_make_system_header (scan_in, 1, 0); |
cfad5579 | 647 | |
9751c00e | 648 | scan_decls (scan_in, argc, argv); |
b833afc8 | 649 | for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++) |
9751c00e | 650 | check_macro_names (scan_in, cur_symbols->names); |
ff8281e4 | 651 | |
ff8281e4 | 652 | /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf. |
a92771b8 | 653 | If so, those functions are also required. */ |
ff8281e4 | 654 | if (special_file_handling == stdio_h |
655 | && (fn = lookup_std_proto ("_filbuf", 7)) != NULL) | |
656 | { | |
6af24d0a | 657 | static const unsigned char getchar_call[] = "getchar();"; |
ff8281e4 | 658 | int seen_filbuf = 0; |
659 | ||
a92771b8 | 660 | /* Scan the macro expansion of "getchar();". */ |
6cee4464 | 661 | cpp_push_buffer (scan_in, getchar_call, sizeof(getchar_call) - 1, |
c808d026 | 662 | /* from_stage3 */ true, 1); |
ff8281e4 | 663 | for (;;) |
664 | { | |
f9b5f742 | 665 | const cpp_token *t = cpp_get_token (scan_in); |
f80e83a9 | 666 | |
f9b5f742 | 667 | if (t->type == CPP_EOF) |
41a9aa85 | 668 | break; |
f9b5f742 | 669 | else if (cpp_ideq (t, "_filbuf")) |
ff8281e4 | 670 | seen_filbuf++; |
671 | } | |
41a9aa85 | 672 | |
ff8281e4 | 673 | if (seen_filbuf) |
674 | { | |
675 | int need_filbuf = !SEEN (fn) && !REQUIRED (fn); | |
676 | struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7); | |
677 | int need_flsbuf | |
678 | = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn); | |
679 | ||
a92771b8 | 680 | /* Append "_filbuf" and/or "_flsbuf" to the required functions. */ |
ff8281e4 | 681 | if (need_filbuf + need_flsbuf) |
682 | { | |
a8482e91 | 683 | const char *new_list; |
ff8281e4 | 684 | if (need_filbuf) |
b833afc8 | 685 | SET_REQUIRED (fn); |
ff8281e4 | 686 | if (need_flsbuf) |
b833afc8 | 687 | SET_REQUIRED (flsbuf_fn); |
cfad5579 | 688 | if (need_flsbuf && need_filbuf) |
b833afc8 | 689 | new_list = "_filbuf\0_flsbuf\0"; |
690 | else if (need_flsbuf) | |
691 | new_list = "_flsbuf\0"; | |
692 | else /* if (need_flsbuf) */ | |
693 | new_list = "_filbuf\0"; | |
694 | add_symbols (ANSI_SYMBOL, new_list); | |
ff8281e4 | 695 | required_unseen_count += need_filbuf + need_flsbuf; |
696 | } | |
697 | } | |
698 | } | |
41f8c0bb | 699 | |
a4cfa7e7 | 700 | if (required_unseen_count + partial_count + required_other |
ff8281e4 | 701 | #if ADD_MISSING_EXTERN_C |
d9730104 | 702 | + missing_extern_C_count |
d3371fcd | 703 | #endif |
d9730104 | 704 | == 0) |
41f8c0bb | 705 | { |
706 | if (verbose) | |
707 | fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename); | |
a5659160 | 708 | exit (SUCCESS_EXIT_CODE); |
41f8c0bb | 709 | } |
f8b1eeaa | 710 | if (!verbose) |
711 | fprintf (stderr, "%s: fixing %s\n", progname, inc_filename); | |
712 | else | |
713 | { | |
714 | if (required_unseen_count) | |
715 | fprintf (stderr, "%s: %d missing function declarations.\n", | |
716 | inc_filename, required_unseen_count); | |
717 | if (partial_count) | |
718 | fprintf (stderr, "%s: %d non-prototype function declarations.\n", | |
719 | inc_filename, partial_count); | |
ff8281e4 | 720 | #if ADD_MISSING_EXTERN_C |
f8b1eeaa | 721 | if (missing_extern_C_count) |
722 | fprintf (stderr, | |
723 | "%s: %d declarations not protected by extern \"C\".\n", | |
724 | inc_filename, missing_extern_C_count); | |
d9730104 | 725 | #endif |
f8b1eeaa | 726 | } |
41f8c0bb | 727 | } |
728 | ||
47cefa47 | 729 | static void |
41f8c0bb | 730 | write_rbrac () |
731 | { | |
732 | struct fn_decl *fn; | |
ff8281e4 | 733 | const char *cptr; |
19cb6b50 | 734 | struct symbol_list *cur_symbols; |
41f8c0bb | 735 | |
736 | if (required_unseen_count) | |
93aa68b4 | 737 | { |
93aa68b4 | 738 | #ifdef NO_IMPLICIT_EXTERN_C |
5062cdac | 739 | fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); |
93aa68b4 | 740 | #endif |
741 | } | |
41f8c0bb | 742 | |
a92771b8 | 743 | /* Now we print out prototypes for those functions that we haven't seen. */ |
b833afc8 | 744 | for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++) |
41f8c0bb | 745 | { |
b833afc8 | 746 | int if_was_emitted = 0; |
747 | int name_len; | |
748 | cptr = cur_symbols->names; | |
749 | for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1) | |
750 | { | |
751 | int macro_protect = 0; | |
54244b90 | 752 | |
b833afc8 | 753 | if (cur_symbols->flags & MACRO_SYMBOL) |
754 | continue; | |
755 | ||
756 | fn = lookup_std_proto (cptr, name_len); | |
757 | if (fn == NULL || !REQUIRED (fn)) | |
758 | continue; | |
759 | ||
760 | if (!if_was_emitted) | |
761 | { | |
762 | /* what about curses. ??? or _flsbuf/_filbuf ??? */ | |
763 | if (cur_symbols->flags & ANSI_SYMBOL) | |
764 | fprintf (outf, | |
765 | "#if defined(__USE_FIXED_PROTOTYPES__) || defined(__cplusplus) || defined (__STRICT_ANSI__)\n"); | |
a4cfa7e7 | 766 | else if (cur_symbols->flags & (POSIX1_SYMBOL|POSIX2_SYMBOL)) |
b833afc8 | 767 | fprintf (outf, |
768 | "#if defined(__USE_FIXED_PROTOTYPES__) || (defined(__cplusplus) \\\n\ | |
a4cfa7e7 | 769 | ? (!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)) \\\n\ |
770 | : (defined(__STRICT_ANSI__) && defined(_POSIX_SOURCE)))\n"); | |
771 | else if (cur_symbols->flags & XOPEN_SYMBOL) | |
772 | { | |
773 | fprintf (outf, | |
774 | "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\ | |
775 | || (defined(__STRICT_ANSI__) && defined(_XOPEN_SOURCE))\n"); | |
776 | } | |
777 | else if (cur_symbols->flags & XOPEN_EXTENDED_SYMBOL) | |
778 | { | |
779 | fprintf (outf, | |
780 | "#if defined(__USE_FIXED_PROTOTYPES__) \\\n\ | |
781 | || (defined(__STRICT_ANSI__) && defined(_XOPEN_EXTENDED_SOURCE))\n"); | |
782 | } | |
783 | else | |
784 | { | |
785 | fatal ("internal error for function %s", fn->fname); | |
786 | } | |
b833afc8 | 787 | if_was_emitted = 1; |
788 | } | |
54244b90 | 789 | |
b833afc8 | 790 | /* In the case of memmove, protect in case the application |
791 | defines it as a macro before including the header. */ | |
792 | if (!strcmp (fn->fname, "memmove") | |
84c2d94c | 793 | || !strcmp (fn->fname, "putc") |
794 | || !strcmp (fn->fname, "getc") | |
b833afc8 | 795 | || !strcmp (fn->fname, "vprintf") |
796 | || !strcmp (fn->fname, "vfprintf") | |
797 | || !strcmp (fn->fname, "vsprintf") | |
84d5a010 | 798 | || !strcmp (fn->fname, "rewinddir") |
799 | || !strcmp (fn->fname, "abort")) | |
b833afc8 | 800 | macro_protect = 1; |
801 | ||
802 | if (macro_protect) | |
803 | fprintf (outf, "#ifndef %s\n", fn->fname); | |
804 | fprintf (outf, "extern %s %s (%s);\n", | |
805 | fn->rtype, fn->fname, fn->params); | |
806 | if (macro_protect) | |
807 | fprintf (outf, "#endif\n"); | |
808 | } | |
809 | if (if_was_emitted) | |
810 | fprintf (outf, | |
811 | "#endif /* defined(__USE_FIXED_PROTOTYPES__) || ... */\n"); | |
41f8c0bb | 812 | } |
813 | if (required_unseen_count) | |
93aa68b4 | 814 | { |
815 | #ifdef NO_IMPLICIT_EXTERN_C | |
5062cdac | 816 | fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); |
93aa68b4 | 817 | #endif |
93aa68b4 | 818 | } |
41f8c0bb | 819 | |
820 | switch (special_file_handling) | |
821 | { | |
ff8281e4 | 822 | case errno_h: |
a4cfa7e7 | 823 | if (!seen_errno) |
41f8c0bb | 824 | fprintf (outf, "extern int errno;\n"); |
825 | break; | |
a4cfa7e7 | 826 | case stdlib_h: |
827 | if (!seen_EXIT_FAILURE) | |
828 | fprintf (outf, "#define EXIT_FAILURE 1\n"); | |
829 | if (!seen_EXIT_SUCCESS) | |
830 | fprintf (outf, "#define EXIT_SUCCESS 0\n"); | |
831 | break; | |
ff8281e4 | 832 | case sys_stat_h: |
41f8c0bb | 833 | if (!seen_S_ISBLK && seen_S_IFBLK) |
834 | fprintf (outf, | |
835 | "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n"); | |
836 | if (!seen_S_ISCHR && seen_S_IFCHR) | |
837 | fprintf (outf, | |
838 | "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n"); | |
839 | if (!seen_S_ISDIR && seen_S_IFDIR) | |
840 | fprintf (outf, | |
841 | "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n"); | |
842 | if (!seen_S_ISFIFO && seen_S_IFIFO) | |
843 | fprintf (outf, | |
844 | "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n"); | |
845 | if (!seen_S_ISLNK && seen_S_IFLNK) | |
846 | fprintf (outf, | |
847 | "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n"); | |
848 | if (!seen_S_ISREG && seen_S_IFREG) | |
849 | fprintf (outf, | |
850 | "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n"); | |
851 | break; | |
65ba74c3 | 852 | |
853 | default: | |
854 | break; | |
41f8c0bb | 855 | } |
856 | ||
857 | ||
ff8281e4 | 858 | #if ADD_MISSING_EXTERN_C |
fd2e14b3 | 859 | if (missing_extern_C_count + required_unseen_count > 0) |
860 | fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); | |
d9730104 | 861 | #endif |
41f8c0bb | 862 | } |
863 | ||
41f8c0bb | 864 | /* Returns 1 iff the file is properly protected from multiple inclusion: |
865 | #ifndef PROTECT_NAME | |
866 | #define PROTECT_NAME | |
867 | #endif | |
868 | ||
869 | */ | |
870 | ||
a92771b8 | 871 | #define INF_GET() (inf_ptr < inf_limit ? *(unsigned char *) inf_ptr++ : EOF) |
9ebdb4ae | 872 | #define INF_UNGET(c) ((c)!=EOF && inf_ptr--) |
a2075ffb | 873 | |
47cefa47 | 874 | static int |
a2075ffb | 875 | inf_skip_spaces (c) |
876 | int c; | |
877 | { | |
878 | for (;;) | |
879 | { | |
880 | if (c == ' ' || c == '\t') | |
9ebdb4ae | 881 | c = INF_GET (); |
a2075ffb | 882 | else if (c == '/') |
883 | { | |
9ebdb4ae | 884 | c = INF_GET (); |
a2075ffb | 885 | if (c != '*') |
886 | { | |
73439ee0 | 887 | (void) INF_UNGET (c); |
a2075ffb | 888 | return '/'; |
889 | } | |
9ebdb4ae | 890 | c = INF_GET (); |
a2075ffb | 891 | for (;;) |
892 | { | |
893 | if (c == EOF) | |
894 | return EOF; | |
895 | else if (c != '*') | |
896 | { | |
897 | if (c == '\n') | |
898 | source_lineno++, lineno++; | |
899 | c = INF_GET (); | |
900 | } | |
9ebdb4ae | 901 | else if ((c = INF_GET ()) == '/') |
902 | return INF_GET (); | |
a2075ffb | 903 | } |
904 | } | |
905 | else | |
906 | break; | |
907 | } | |
908 | return c; | |
909 | } | |
910 | ||
a92771b8 | 911 | /* Read into STR from inf_buffer upto DELIM. */ |
a2075ffb | 912 | |
47cefa47 | 913 | static int |
a2075ffb | 914 | inf_read_upto (str, delim) |
915 | sstring *str; | |
916 | int delim; | |
917 | { | |
918 | int ch; | |
919 | for (;;) | |
920 | { | |
921 | ch = INF_GET (); | |
922 | if (ch == EOF || ch == delim) | |
923 | break; | |
9ebdb4ae | 924 | SSTRING_PUT (str, ch); |
a2075ffb | 925 | } |
9ebdb4ae | 926 | MAKE_SSTRING_SPACE (str, 1); |
a2075ffb | 927 | *str->ptr = 0; |
928 | return ch; | |
929 | } | |
930 | ||
47cefa47 | 931 | static int |
a2075ffb | 932 | inf_scan_ident (s, c) |
19cb6b50 | 933 | sstring *s; |
a2075ffb | 934 | int c; |
935 | { | |
936 | s->ptr = s->base; | |
66a33570 | 937 | if (ISIDST (c)) |
a2075ffb | 938 | { |
939 | for (;;) | |
940 | { | |
9ebdb4ae | 941 | SSTRING_PUT (s, c); |
a2075ffb | 942 | c = INF_GET (); |
66a33570 | 943 | if (c == EOF || !(ISIDNUM (c))) |
a2075ffb | 944 | break; |
945 | } | |
946 | } | |
9ebdb4ae | 947 | MAKE_SSTRING_SPACE (s, 1); |
a2075ffb | 948 | *s->ptr = 0; |
949 | return c; | |
950 | } | |
951 | ||
952 | /* Returns 1 if the file is correctly protected against multiple | |
953 | inclusion, setting *ifndef_line to the line number of the initial #ifndef | |
954 | and setting *endif_line to the final #endif. | |
a92771b8 | 955 | Otherwise return 0. */ |
a2075ffb | 956 | |
47cefa47 | 957 | static int |
a2075ffb | 958 | check_protection (ifndef_line, endif_line) |
41f8c0bb | 959 | int *ifndef_line, *endif_line; |
960 | { | |
961 | int c; | |
962 | int if_nesting = 1; /* Level of nesting of #if's */ | |
963 | char *protect_name = NULL; /* Identifier following initial #ifndef */ | |
964 | int define_seen = 0; | |
965 | ||
a92771b8 | 966 | /* Skip initial white space (including comments). */ |
41f8c0bb | 967 | for (;; lineno++) |
968 | { | |
a2075ffb | 969 | c = inf_skip_spaces (' '); |
41f8c0bb | 970 | if (c == EOF) |
971 | return 0; | |
972 | if (c != '\n') | |
973 | break; | |
974 | } | |
975 | if (c != '#') | |
976 | return 0; | |
a2075ffb | 977 | c = inf_scan_ident (&buf, inf_skip_spaces (' ')); |
9ebdb4ae | 978 | if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0) |
41f8c0bb | 979 | return 0; |
980 | ||
a92771b8 | 981 | /* So far so good: We've seen an initial #ifndef. */ |
41f8c0bb | 982 | *ifndef_line = lineno; |
a2075ffb | 983 | c = inf_scan_ident (&buf, inf_skip_spaces (c)); |
9ebdb4ae | 984 | if (SSTRING_LENGTH (&buf) == 0 || c == EOF) |
41f8c0bb | 985 | return 0; |
592ef3a0 | 986 | protect_name = xstrdup (buf.base); |
41f8c0bb | 987 | |
73439ee0 | 988 | (void) INF_UNGET (c); |
a2075ffb | 989 | c = inf_read_upto (&buf, '\n'); |
41f8c0bb | 990 | if (c == EOF) |
991 | return 0; | |
992 | lineno++; | |
993 | ||
994 | for (;;) | |
995 | { | |
9ebdb4ae | 996 | c = inf_skip_spaces (' '); |
41f8c0bb | 997 | if (c == EOF) |
998 | return 0; | |
999 | if (c == '\n') | |
1000 | { | |
1001 | lineno++; | |
1002 | continue; | |
1003 | } | |
1004 | if (c != '#') | |
1005 | goto skip_to_eol; | |
a2075ffb | 1006 | c = inf_scan_ident (&buf, inf_skip_spaces (' ')); |
9ebdb4ae | 1007 | if (SSTRING_LENGTH (&buf) == 0) |
41f8c0bb | 1008 | ; |
1009 | else if (!strcmp (buf.base, "ifndef") | |
1010 | || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if")) | |
1011 | { | |
1012 | if_nesting++; | |
1013 | } | |
1014 | else if (!strcmp (buf.base, "endif")) | |
1015 | { | |
1016 | if_nesting--; | |
1017 | if (if_nesting == 0) | |
1018 | break; | |
1019 | } | |
1020 | else if (!strcmp (buf.base, "else")) | |
1021 | { | |
1022 | if (if_nesting == 1) | |
1023 | return 0; | |
1024 | } | |
1025 | else if (!strcmp (buf.base, "define")) | |
1026 | { | |
a2075ffb | 1027 | c = inf_skip_spaces (c); |
1028 | c = inf_scan_ident (&buf, c); | |
9ebdb4ae | 1029 | if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0) |
41f8c0bb | 1030 | define_seen = 1; |
1031 | } | |
1032 | skip_to_eol: | |
1033 | for (;;) | |
1034 | { | |
1035 | if (c == '\n' || c == EOF) | |
1036 | break; | |
9ebdb4ae | 1037 | c = INF_GET (); |
41f8c0bb | 1038 | } |
1039 | if (c == EOF) | |
1040 | return 0; | |
1041 | lineno++; | |
1042 | } | |
1043 | ||
1044 | if (!define_seen) | |
1045 | return 0; | |
1046 | *endif_line = lineno; | |
a92771b8 | 1047 | /* Skip final white space (including comments). */ |
41f8c0bb | 1048 | for (;;) |
1049 | { | |
a2075ffb | 1050 | c = inf_skip_spaces (' '); |
41f8c0bb | 1051 | if (c == EOF) |
1052 | break; | |
1053 | if (c != '\n') | |
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | return 1; | |
1058 | } | |
1059 | ||
621f6678 | 1060 | extern int main PARAMS ((int, char **)); |
47cefa47 | 1061 | |
41f8c0bb | 1062 | int |
9ebdb4ae | 1063 | main (argc, argv) |
41f8c0bb | 1064 | int argc; |
1065 | char **argv; | |
1066 | { | |
a2075ffb | 1067 | int inf_fd; |
1068 | struct stat sbuf; | |
41f8c0bb | 1069 | int c; |
9e51f23f | 1070 | #ifdef FIXPROTO_IGNORE_LIST |
1071 | int i; | |
1072 | #endif | |
1073 | const char *cptr; | |
41f8c0bb | 1074 | int ifndef_line; |
a2075ffb | 1075 | int endif_line; |
1076 | long to_read; | |
9ebdb4ae | 1077 | long int inf_size; |
19cb6b50 | 1078 | struct symbol_list *cur_symbols; |
41f8c0bb | 1079 | |
1080 | if (argv[0] && argv[0][0]) | |
c0769a69 | 1081 | { |
19cb6b50 | 1082 | char *p; |
c0769a69 | 1083 | |
1084 | progname = 0; | |
1085 | for (p = argv[0]; *p; p++) | |
d3371fcd | 1086 | if (*p == '/') |
1087 | progname = p; | |
c0769a69 | 1088 | progname = progname ? progname+1 : argv[0]; |
1089 | } | |
41f8c0bb | 1090 | |
1091 | if (argc < 4) | |
1092 | { | |
ff8281e4 | 1093 | fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n", |
41f8c0bb | 1094 | progname); |
a5659160 | 1095 | exit (FATAL_EXIT_CODE); |
41f8c0bb | 1096 | } |
1097 | ||
1098 | inc_filename = argv[1]; | |
1099 | inc_filename_length = strlen (inc_filename); | |
ff8281e4 | 1100 | |
1101 | #ifdef FIXPROTO_IGNORE_LIST | |
1102 | for (i = 0; files_to_ignore[i] != NULL; i++) | |
1103 | { | |
33b57a7b | 1104 | const char *const ignore_name = files_to_ignore[i]; |
ff8281e4 | 1105 | int ignore_len = strlen (ignore_name); |
1106 | if (strncmp (inc_filename, ignore_name, ignore_len) == 0) | |
1107 | { | |
1108 | if (ignore_name[ignore_len-1] == '/' | |
1109 | || inc_filename[ignore_len] == '\0') | |
1110 | { | |
1111 | if (verbose) | |
1112 | fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename); | |
a5659160 | 1113 | exit (SUCCESS_EXIT_CODE); |
ff8281e4 | 1114 | } |
1115 | } | |
d3371fcd | 1116 | |
ff8281e4 | 1117 | } |
1118 | #endif | |
1119 | ||
41f8c0bb | 1120 | if (strcmp (inc_filename, "sys/stat.h") == 0) |
ff8281e4 | 1121 | special_file_handling = sys_stat_h; |
41f8c0bb | 1122 | else if (strcmp (inc_filename, "errno.h") == 0) |
a4cfa7e7 | 1123 | special_file_handling = errno_h, required_other++; |
1124 | else if (strcmp (inc_filename, "stdlib.h") == 0) | |
1125 | special_file_handling = stdlib_h, required_other+=2; | |
ff8281e4 | 1126 | else if (strcmp (inc_filename, "stdio.h") == 0) |
1127 | special_file_handling = stdio_h; | |
1128 | include_entry = std_include_table; | |
1129 | while (include_entry->name != NULL | |
9b1fb27b | 1130 | && ((strcmp (include_entry->name, CONTINUED) == 0) |
b833afc8 | 1131 | || strcmp (inc_filename, include_entry->name) != 0)) |
ff8281e4 | 1132 | include_entry++; |
1133 | ||
b833afc8 | 1134 | if (include_entry->name != NULL) |
1135 | { | |
33b57a7b | 1136 | const struct std_include_entry *entry; |
b833afc8 | 1137 | cur_symbol_table_size = 0; |
1138 | for (entry = include_entry; ;) | |
1139 | { | |
65ba74c3 | 1140 | if (entry->flags) |
1141 | add_symbols (entry->flags, entry->names); | |
b833afc8 | 1142 | entry++; |
880d0dfe | 1143 | if (!entry->name || strcmp (entry->name, CONTINUED) != 0) |
b833afc8 | 1144 | break; |
1145 | } | |
1146 | } | |
1147 | else | |
1148 | symbol_table[0].names = NULL; | |
ff8281e4 | 1149 | |
d3371fcd | 1150 | /* Count and mark the prototypes required for this include file. */ |
b833afc8 | 1151 | for (cur_symbols = &symbol_table[0]; cur_symbols->names; cur_symbols++) |
41f8c0bb | 1152 | { |
b833afc8 | 1153 | int name_len; |
1154 | if (cur_symbols->flags & MACRO_SYMBOL) | |
1155 | continue; | |
1156 | cptr = cur_symbols->names; | |
1157 | for ( ; (name_len = strlen (cptr)) != 0; cptr+= name_len + 1) | |
1158 | { | |
1159 | struct fn_decl *fn = lookup_std_proto (cptr, name_len); | |
1160 | required_unseen_count++; | |
1161 | if (fn == NULL) | |
1162 | fprintf (stderr, "Internal error: No prototype for %s\n", cptr); | |
1163 | else | |
1164 | SET_REQUIRED (fn); | |
1165 | } | |
41f8c0bb | 1166 | } |
41f8c0bb | 1167 | |
ff8281e4 | 1168 | read_scan_file (argv[2], argc - 4, argv + 4); |
41f8c0bb | 1169 | |
a2075ffb | 1170 | inf_fd = open (argv[2], O_RDONLY, 0666); |
1171 | if (inf_fd < 0) | |
41f8c0bb | 1172 | { |
1173 | fprintf (stderr, "%s: Cannot open '%s' for reading -", | |
1174 | progname, argv[2]); | |
1175 | perror (NULL); | |
a5659160 | 1176 | exit (FATAL_EXIT_CODE); |
41f8c0bb | 1177 | } |
a2075ffb | 1178 | if (fstat (inf_fd, &sbuf) < 0) |
1179 | { | |
1180 | fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]); | |
1181 | perror (NULL); | |
a5659160 | 1182 | exit (FATAL_EXIT_CODE); |
a2075ffb | 1183 | } |
1184 | inf_size = sbuf.st_size; | |
a92771b8 | 1185 | inf_buffer = (char *) xmalloc (inf_size + 2); |
a2075ffb | 1186 | inf_ptr = inf_buffer; |
1187 | ||
1188 | to_read = inf_size; | |
1189 | while (to_read > 0) | |
1190 | { | |
1191 | long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read); | |
1192 | if (i < 0) | |
1193 | { | |
1194 | fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]); | |
1195 | perror (NULL); | |
a5659160 | 1196 | exit (FATAL_EXIT_CODE); |
a2075ffb | 1197 | } |
1198 | if (i == 0) | |
1199 | { | |
1200 | inf_size -= to_read; | |
1201 | break; | |
1202 | } | |
1203 | to_read -= i; | |
1204 | } | |
1205 | ||
1206 | close (inf_fd); | |
41f8c0bb | 1207 | |
3655c95d | 1208 | /* Inf_size may have changed if read was short (as on VMS) */ |
1209 | inf_buffer[inf_size] = '\n'; | |
1210 | inf_buffer[inf_size + 1] = '\0'; | |
1211 | inf_limit = inf_buffer + inf_size; | |
1212 | ||
a92771b8 | 1213 | /* If file doesn't end with '\n', add one. */ |
9ebdb4ae | 1214 | if (inf_limit > inf_buffer && inf_limit[-1] != '\n') |
1215 | inf_limit++; | |
1216 | ||
c0769a69 | 1217 | unlink (argv[3]); |
41f8c0bb | 1218 | outf = fopen (argv[3], "w"); |
1219 | if (outf == NULL) | |
1220 | { | |
1221 | fprintf (stderr, "%s: Cannot open '%s' for writing -", | |
1222 | progname, argv[3]); | |
1223 | perror (NULL); | |
a5659160 | 1224 | exit (FATAL_EXIT_CODE); |
41f8c0bb | 1225 | } |
1226 | ||
a2075ffb | 1227 | lineno = 1; |
1228 | ||
1229 | if (check_protection (&ifndef_line, &endif_line)) | |
41f8c0bb | 1230 | { |
41f8c0bb | 1231 | lbrac_line = ifndef_line+1; |
1232 | rbrac_line = endif_line; | |
1233 | } | |
1234 | else | |
1235 | { | |
1236 | lbrac_line = 1; | |
1237 | rbrac_line = -1; | |
1238 | } | |
1239 | ||
a92771b8 | 1240 | /* Reset input file. */ |
a2075ffb | 1241 | inf_ptr = inf_buffer; |
41f8c0bb | 1242 | lineno = 1; |
1243 | ||
1244 | for (;;) | |
1245 | { | |
1246 | if (lineno == lbrac_line) | |
1247 | write_lbrac (); | |
1248 | if (lineno == rbrac_line) | |
1249 | write_rbrac (); | |
1250 | for (;;) | |
1251 | { | |
1252 | struct fn_decl *fn; | |
9ebdb4ae | 1253 | c = INF_GET (); |
41f8c0bb | 1254 | if (c == EOF) |
1255 | break; | |
66a33570 | 1256 | if (ISIDST (c)) |
41f8c0bb | 1257 | { |
a2075ffb | 1258 | c = inf_scan_ident (&buf, c); |
73439ee0 | 1259 | (void) INF_UNGET (c); |
41f8c0bb | 1260 | fputs (buf.base, outf); |
ff8281e4 | 1261 | fn = lookup_std_proto (buf.base, strlen (buf.base)); |
41f8c0bb | 1262 | /* We only want to edit the declaration matching the one |
1263 | seen by scan-decls, as there can be multiple | |
a92771b8 | 1264 | declarations, selected by #ifdef __STDC__ or whatever. */ |
41f8c0bb | 1265 | if (fn && fn->partial && fn->partial->line_seen == lineno) |
1266 | { | |
a2075ffb | 1267 | c = inf_skip_spaces (' '); |
41f8c0bb | 1268 | if (c == EOF) |
1269 | break; | |
1270 | if (c == '(') | |
1271 | { | |
a2075ffb | 1272 | c = inf_skip_spaces (' '); |
41f8c0bb | 1273 | if (c == ')') |
1274 | { | |
1275 | fprintf (outf, " _PARAMS((%s))", fn->params); | |
1276 | } | |
1277 | else | |
1278 | { | |
1279 | putc ('(', outf); | |
73439ee0 | 1280 | (void) INF_UNGET (c); |
41f8c0bb | 1281 | } |
1282 | } | |
1283 | else | |
f8b1eeaa | 1284 | fprintf (outf, " %c", c); |
41f8c0bb | 1285 | } |
1286 | } | |
1287 | else | |
a2075ffb | 1288 | { |
1289 | putc (c, outf); | |
1290 | if (c == '\n') | |
1291 | break; | |
1292 | } | |
41f8c0bb | 1293 | } |
1294 | if (c == EOF) | |
1295 | break; | |
1296 | lineno++; | |
1297 | } | |
1298 | if (rbrac_line < 0) | |
1299 | write_rbrac (); | |
1300 | ||
41f8c0bb | 1301 | fclose (outf); |
1302 | ||
1303 | return 0; | |
1304 | } | |
ff8281e4 | 1305 | \f |
0e93a6ac | 1306 | |
1307 | static void | |
1308 | v_fatal (str, ap) | |
1309 | const char * str; | |
1310 | va_list ap; | |
ff8281e4 | 1311 | { |
1a44422d | 1312 | fprintf (stderr, "%s: %s: ", progname, inc_filename); |
0e93a6ac | 1313 | vfprintf (stderr, str, ap); |
ff8281e4 | 1314 | fprintf (stderr, "\n"); |
d3371fcd | 1315 | |
548525a3 | 1316 | exit (FATAL_EXIT_CODE); |
ff8281e4 | 1317 | } |
1318 | ||
47cefa47 | 1319 | static void |
621f6678 | 1320 | fatal VPARAMS ((const char *str, ...)) |
307ea935 | 1321 | { |
0903457a | 1322 | VA_OPEN (ap, str); |
1323 | VA_FIXEDARG (ap, const char *, str); | |
0e93a6ac | 1324 | |
448f8d42 | 1325 | v_fatal (str, ap); |
0903457a | 1326 | VA_CLOSE (ap); |
0e93a6ac | 1327 | } |