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Diffstat (limited to 'contrib/gcc/fix-header.c')
| -rw-r--r-- | contrib/gcc/fix-header.c | 1202 |
1 files changed, 1202 insertions, 0 deletions
diff --git a/contrib/gcc/fix-header.c b/contrib/gcc/fix-header.c new file mode 100644 index 0000000..53e5c06 --- /dev/null +++ b/contrib/gcc/fix-header.c @@ -0,0 +1,1202 @@ +/* fix-header.c - Make C header file suitable for C++. + Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc. + +This program is free software; you can redistribute it and/or modify it +under the terms of the GNU General Public License as published by the +Free Software Foundation; either version 2, or (at your option) any +later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +/* This program massages a system include file (such as stdio.h), + into a form more conforming with ANSI/POSIX, and more suitable for C++: + + * extern "C" { ... } braces are added (inside #ifndef __cplusplus), + if they seem to be needed. These prevent C++ compilers from name + mangling the functions inside the braces. + + * If an old-style incomplete function declaration is seen (without + an argument list), and it is a "standard" function listed in + the file sys-protos.h (and with a non-empty argument list), then + the declaration is converted to a complete prototype by replacing + the empty parameter list with the argument lust from sys-protos.h. + + * The program can be given a list of (names of) required standard + functions (such as fclose for stdio.h). If a required function + is not seen in the input, then a prototype for it will be + written to the output. + + * If all of the non-comment code of the original file is protected + against multiple inclusion: + #ifndef FOO + #define FOO + <body of include file> + #endif + then extra matter added to the include file is placed inside the <body>. + + * If the input file is OK (nothing needs to be done); + the output file is not written (nor removed if it exists). + + There are also some special actions that are done for certain + well-known standard include files: + + * If argv[1] is "sys/stat.h", the Posix.1 macros + S_ISBLK, S_ISCHR, S_ISDIR, S_ISFIFO, S_ISLNK, S_ISREG are added if + they were missing, and the corresponding "traditional" S_IFxxx + macros were defined. + + * If argv[1] is "errno.h", errno is declared if it was missing. + + * TODO: The input file should be read complete into memory, because: + a) it needs to be scanned twice anyway, and + b) it would be nice to allow update in place. + + Usage: + fix-header FOO.H INFILE.H OUTFILE.H [OPTIONS] + where: + * FOO.H is the relative file name of the include file, + as it would be #include'd by a C file. (E.g. stdio.h) + * INFILE.H is a full pathname for the input file (e.g. /usr/include/stdio.h) + * OUTFILE.H is the full pathname for where to write the output file, + if anything needs to be done. (e.g. ./include/stdio.h) + * OPTIONS are such as you would pass to cpp. + + Written by Per Bothner <bothner@cygnus.com>, July 1993. */ + +#include <stdio.h> +#include <ctype.h> +#include "hconfig.h" +#include "obstack.h" +#include "scan.h" +#include "cpplib.h" +#ifndef O_RDONLY +#define O_RDONLY 0 +#endif + +#if !__STDC__ +#define const /* nothing */ +#endif + +sstring buf; + +int verbose = 0; +int partial_count = 0; +int warnings = 0; + +/* We no longer need to add extern "C", because cpp implicitly + forces the standard include files to be treated as C. */ +/*#define ADD_MISSING_EXTERN_C 1 */ + +#if ADD_MISSING_EXTERN_C +int missing_extern_C_count = 0; +#endif +int missing_errno = 0; + +#include "xsys-protos.h" + +#ifdef FIXPROTO_IGNORE_LIST +/* This is a currently unused feature. */ + +/* List of files and directories to ignore. + A directory name (ending in '/') means ignore anything in that + directory. (It might be more efficient to do directory pruning + earlier in fixproto, but this is simpler and easier to customize.) */ + +static char *files_to_ignore[] = { + "X11/", + FIXPROTO_IGNORE_LIST + 0 +}; +#endif + +char *inf_buffer; +char *inf_limit; +char *inf_ptr; + +/* Certain standard files get extra treatment */ + +enum special_file +{ + no_special, + errno_h, + stdio_h, + sys_stat_h +}; + +/* A NAMELIST is a sequence of names, separated by '\0', and terminated + by an empty name (i.e. by "\0\0"). */ + +typedef const char* namelist; + +struct std_include_entry { + const char *name; + namelist required; + namelist extra; + int special; +}; + +/* End of namelist NAMES. */ + +namelist +namelist_end (names) + namelist names; +{ + register namelist ptr; + for (ptr = names; ; ptr++) + { + if (*ptr == '\0') + { + ptr++; + if (*ptr == '\0') + return ptr; + } + } +} + +const char NONE[] = ""; + +struct std_include_entry *include_entry; + +struct std_include_entry std_include_table [] = { + { "ctype.h", + "isalnum\0isalpha\0iscntrl\0isdigit\0isgraph\0islower\0\ +isprint\0ispunct\0isspace\0isupper\0isxdigit\0tolower\0toupper\0", NONE }, + + { "dirent.h", "closedir\0opendir\0readdir\0rewinddir\0", NONE}, + + { "errno.h", NONE, "errno\0" }, + + { "curses.h", "box\0delwin\0endwin\0getcurx\0getcury\0initscr\0\ +mvcur\0mvwprintw\0mvwscanw\0newwin\0overlay\0overwrite\0\ +scroll\0subwin\0touchwin\0waddstr\0wclear\0wclrtobot\0wclrtoeol\0\ +waddch\0wdelch\0wdeleteln\0werase\0wgetch\0wgetstr\0winsch\0winsertln\0\ +wmove\0wprintw\0wrefresh\0wscanw\0wstandend\0wstandout\0", NONE }, + + { "fcntl.h", "creat\0fcntl\0open\0", NONE }, + + /* Maybe also "getgrent fgetgrent setgrent endgrent" */ + { "grp.h", "getgrgid\0getgrnam\0", NONE }, + +/*{ "limit.h", ... provided by gcc }, */ + + { "locale.h", "localeconv\0setlocale\0", NONE }, + + { "math.h", "acos\0asin\0atan\0atan2\0ceil\0cos\0cosh\0exp\0\ +fabs\0floor\0fmod\0frexp\0ldexp\0log10\0log\0modf\0pow\0sin\0sinh\0sqrt\0\ +tan\0tanh\0", "HUGE_VAL\0" }, + + { "pwd.h", "getpwnam\0getpwuid\0", NONE }, + + /* Left out siglongjmp sigsetjmp - these depend on sigjmp_buf. */ + { "setjmp.h", "longjmp\0setjmp\0", NONE }, + + /* Left out signal() - its prototype is too complex for us! + Also left out "sigaction sigaddset sigdelset sigemptyset + sigfillset sigismember sigpending sigprocmask sigsuspend" + because these need sigset_t or struct sigaction. + Most systems that provide them will also declare them. */ + { "signal.h", "kill\0raise\0", NONE }, + + { "stdio.h", "clearerr\0fclose\0feof\0ferror\0fflush\0fgetc\0fgetpos\0\ +fgets\0fopen\0fprintf\0fputc\0fputs\0fread\0freopen\0fscanf\0fseek\0\ +fsetpos\0ftell\0fwrite\0getc\0getchar\0gets\0pclose\0perror\0popen\0\ +printf\0putc\0putchar\0puts\0remove\0rename\0rewind\0scanf\0setbuf\0\ +setvbuf\0sprintf\0sscanf\0vprintf\0vsprintf\0vfprintf\0tmpfile\0\ +tmpnam\0ungetc\0", NONE }, +/* Should perhaps also handle NULL, EOF, ... ? */ + + /* "div ldiv", - ignored because these depend on div_t, ldiv_t + ignore these: "mblen mbstowcs mbstowc wcstombs wctomb" + Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions. + Should perhaps also add NULL */ + { "stdlib.h", "abort\0abs\0atexit\0atof\0atoi\0atol\0bsearch\0calloc\0\ +exit\0free\0getenv\0labs\0malloc\0putenv\0qsort\0rand\0realloc\0\ +srand\0strtod\0strtol\0strtoul\0system\0", NONE }, + + { "string.h", "memchr\0memcmp\0memcpy\0memmove\0memset\0\ +strcat\0strchr\0strcmp\0strcoll\0strcpy\0strcspn\0strerror\0\ +strlen\0strncat\0strncmp\0strncpy\0strpbrk\0strrchr\0strspn\0strstr\0\ +strtok\0strxfrm\0", NONE }, +/* Should perhaps also add NULL and size_t */ + + { "sys/stat.h", "chmod\0fstat\0mkdir\0mkfifo\0stat\0lstat\0umask\0", + "S_ISDIR\0S_ISBLK\0S_ISCHR\0S_ISFIFO\0S_ISREG\0S_ISLNK\0S_IFDIR\0\ +S_IFBLK\0S_IFCHR\0S_IFIFO\0S_IFREG\0S_IFLNK\0" }, + + { "sys/times.h", "times\0", NONE }, + /* "sys/types.h" add types (not in old g++-include) */ + + { "sys/utsname.h", "uname\0", NONE }, + + { "sys/wait.h", "wait\0waitpid\0", + "WEXITSTATUS\0WIFEXITED\0WIFSIGNALED\0WIFSTOPPED\0WSTOPSIG\0\ +WTERMSIG\0WNOHANG\0WNOTRACED\0" }, + + { "tar.h", NONE, NONE }, + + { "termios.h", "cfgetispeed\0cfgetospeed\0cfsetispeed\0cfsetospeed\0tcdrain\0tcflow\0tcflush\0tcgetattr\0tcsendbreak\0tcsetattr\0", NONE }, + + { "time.h", "asctime\0clock\0ctime\0difftime\0gmtime\0localtime\0mktime\0strftime\0time\0tzset\0", NONE }, + + { "unistd.h", "_exit\0access\0alarm\0chdir\0chown\0close\0ctermid\0cuserid\0\ +dup\0dup2\0execl\0execle\0execlp\0execv\0execve\0execvp\0fork\0fpathconf\0\ +getcwd\0getegid\0geteuid\0getgid\0getlogin\0getopt\0getpgrp\0getpid\0\ +getppid\0getuid\0isatty\0link\0lseek\0pathconf\0pause\0pipe\0read\0rmdir\0\ +setgid\0setpgid\0setsid\0setuid\0sleep\0sysconf\0tcgetpgrp\0tcsetpgrp\0\ +ttyname\0unlink\0write\0", NONE }, + + { 0, NONE, NONE } +}; + +enum special_file special_file_handling = no_special; + +/* The following are only used when handling sys/stat.h */ +/* They are set if the corresponding macro has been seen. */ +int seen_S_IFBLK = 0, seen_S_ISBLK = 0; +int seen_S_IFCHR = 0, seen_S_ISCHR = 0; +int seen_S_IFDIR = 0, seen_S_ISDIR = 0; +int seen_S_IFIFO = 0, seen_S_ISFIFO = 0; +int seen_S_IFLNK = 0, seen_S_ISLNK = 0; +int seen_S_IFREG = 0, seen_S_ISREG = 0; + +/* Wrapper around free, to avoid prototype clashes. */ + +void +xfree (ptr) + char *ptr; +{ + free (ptr); +} + +/* Avoid error if config defines abort as fancy_abort. + It's not worth "really" implementing this because ordinary + compiler users never run fix-header. */ + +void +fancy_abort () +{ + abort (); +} + +#define obstack_chunk_alloc xmalloc +#define obstack_chunk_free xfree +struct obstack scan_file_obstack; + +/* NOTE: If you edit this, also edit gen-protos.c !! */ +struct fn_decl * +lookup_std_proto (name, name_length) + const char *name; + int name_length; +{ + int i = hashf (name, name_length, HASH_SIZE); + int i0 = i; + for (;;) + { + struct fn_decl *fn; + if (hash_tab[i] == 0) + return NULL; + fn = &std_protos[hash_tab[i]]; + if (strlen (fn->fname) == name_length + && strncmp (fn->fname, name, name_length) == 0) + return fn; + i = (i+1) % HASH_SIZE; + if (i == i0) + abort (); + } +} + +char *inc_filename; +int inc_filename_length; +char *progname = "fix-header"; +FILE *outf; +sstring line; + +int lbrac_line, rbrac_line; + +namelist required_functions_list; +int required_unseen_count = 0; + +void +write_lbrac () +{ + +#if ADD_MISSING_EXTERN_C + if (missing_extern_C_count + required_unseen_count > 0) + fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); +#endif + + if (partial_count) + { + fprintf (outf, "#ifndef _PARAMS\n"); + fprintf (outf, "#if defined(__STDC__) || defined(__cplusplus)\n"); + fprintf (outf, "#define _PARAMS(ARGS) ARGS\n"); + fprintf (outf, "#else\n"); + fprintf (outf, "#define _PARAMS(ARGS) ()\n"); + fprintf (outf, "#endif\n#endif /* _PARAMS */\n"); + } +} + +struct partial_proto +{ + struct partial_proto *next; + char *fname; /* name of function */ + char *rtype; /* return type */ + struct fn_decl *fn; + int line_seen; +}; + +struct partial_proto *partial_proto_list = NULL; + +struct partial_proto required_dummy_proto, seen_dummy_proto; +#define REQUIRED(FN) ((FN)->partial == &required_dummy_proto) +#define SET_REQUIRED(FN) ((FN)->partial = &required_dummy_proto) +#define SET_SEEN(FN) ((FN)->partial = &seen_dummy_proto) +#define SEEN(FN) ((FN)->partial == &seen_dummy_proto) + +void +recognized_macro (fname) + char *fname; +{ + /* The original include file defines fname as a macro. */ + struct fn_decl *fn = lookup_std_proto (fname, strlen (fname)); + + /* Since fname is a macro, don't require a prototype for it. */ + if (fn) + { + if (REQUIRED (fn)) + required_unseen_count--; + SET_SEEN (fn); + } + + switch (special_file_handling) + { + case errno_h: + if (strcmp (fname, "errno") == 0) missing_errno = 0; + break; + case sys_stat_h: + if (fname[0] == 'S' && fname[1] == '_') + { + if (strcmp (fname, "S_IFBLK") == 0) seen_S_IFBLK++; + else if (strcmp (fname, "S_ISBLK") == 0) seen_S_ISBLK++; + else if (strcmp (fname, "S_IFCHR") == 0) seen_S_IFCHR++; + else if (strcmp (fname, "S_ISCHR") == 0) seen_S_ISCHR++; + else if (strcmp (fname, "S_IFDIR") == 0) seen_S_IFDIR++; + else if (strcmp (fname, "S_ISDIR") == 0) seen_S_ISDIR++; + else if (strcmp (fname, "S_IFIFO") == 0) seen_S_IFIFO++; + else if (strcmp (fname, "S_ISFIFO") == 0) seen_S_ISFIFO++; + else if (strcmp (fname, "S_IFLNK") == 0) seen_S_IFLNK++; + else if (strcmp (fname, "S_ISLNK") == 0) seen_S_ISLNK++; + else if (strcmp (fname, "S_IFREG") == 0) seen_S_IFREG++; + else if (strcmp (fname, "S_ISREG") == 0) seen_S_ISREG++; + } + } +} + +void +recognized_extern (name, name_length, type, type_length) + char *name; + char *type; + int name_length, type_length; +{ + switch (special_file_handling) + { + case errno_h: + if (strncmp (name, "errno", name_length) == 0) missing_errno = 0; + break; + } +} + +/* Called by scan_decls if it saw a function definition for a function + named FNAME, with return type RTYPE, and argument list ARGS, + in source file FILE_SEEN on line LINE_SEEN. + KIND is 'I' for an inline function; + 'F' if a normal function declaration preceded by 'extern "C"' + (or nested inside 'extern "C"' braces); or + 'f' for other function declarations. */ + +void +recognized_function (fname, fname_length, + kind, rtype, rtype_length, + have_arg_list, file_seen, line_seen) + char *fname; + int fname_length; + int kind; /* One of 'f' 'F' or 'I' */ + char *rtype; + int rtype_length; + int have_arg_list; + char *file_seen; + int line_seen; +{ + struct partial_proto *partial; + int i; + struct fn_decl *fn; +#if ADD_MISSING_EXTERN_C + if (kind == 'f') + missing_extern_C_count++; +#endif + + fn = lookup_std_proto (fname, fname_length); + + /* Remove the function from the list of required function. */ + if (fn) + { + if (REQUIRED (fn)) + required_unseen_count--; + SET_SEEN (fn); + } + + /* If we have a full prototype, we're done. */ + if (have_arg_list) + return; + + if (kind == 'I') /* don't edit inline function */ + return; + + /* If the partial prototype was included from some other file, + we don't need to patch it up (in this run). */ + i = strlen (file_seen); + if (i < inc_filename_length + || strcmp (inc_filename, file_seen + (i - inc_filename_length)) != 0) + return; + + if (fn == NULL) + return; + if (fn->params[0] == '\0' || strcmp (fn->params, "void") == 0) + return; + + /* We only have a partial function declaration, + so remember that we have to add a complete prototype. */ + partial_count++; + partial = (struct partial_proto*) + obstack_alloc (&scan_file_obstack, sizeof (struct partial_proto)); + partial->fname = obstack_alloc (&scan_file_obstack, fname_length + 1); + bcopy (fname, partial->fname, fname_length); + partial->fname[fname_length] = 0; + partial->rtype = obstack_alloc (&scan_file_obstack, rtype_length + 1); + sprintf (partial->rtype, "%.*s", rtype_length, rtype); + partial->line_seen = line_seen; + partial->fn = fn; + fn->partial = partial; + partial->next = partial_proto_list; + partial_proto_list = partial; + if (verbose) + { + fprintf (stderr, "(%s: %s non-prototype function declaration.)\n", + inc_filename, partial->fname); + } +} + +/* For any name in NAMES that is defined as a macro, + call recognized_macro on it. */ + +void +check_macro_names (pfile, names) + struct parse_file *pfile; + namelist names; +{ + while (*names) + { + if (cpp_lookup (pfile, names, -1, -1)) + recognized_macro (names); + names += strlen (names) + 1; + } +} + +void +read_scan_file (in_fname, argc, argv) + char *in_fname; + int argc; + char **argv; +{ + cpp_reader scan_in; + cpp_options scan_options; + struct fn_decl *fn; + int i; + + obstack_init (&scan_file_obstack); + + init_parse_file (&scan_in); + scan_in.data = &scan_options; + init_parse_options (&scan_options); + i = cpp_handle_options (&scan_in, argc, argv); + if (i < argc) + fatal ("Invalid option `%s'", argv[i]); + push_parse_file (&scan_in, in_fname); + CPP_OPTIONS (&scan_in)->no_line_commands = 1; + + scan_decls (&scan_in, argc, argv); + check_macro_names (&scan_in, include_entry->required); + check_macro_names (&scan_in, include_entry->extra); + + if (verbose && (scan_in.errors + warnings) > 0) + fprintf (stderr, "(%s: %d errors and %d warnings from cpp)\n", + inc_filename, scan_in.errors, warnings); + if (scan_in.errors) + exit (0); + + /* Traditionally, getc and putc are defined in terms of _filbuf and _flsbuf. + If so, those functions are also required. */ + if (special_file_handling == stdio_h + && (fn = lookup_std_proto ("_filbuf", 7)) != NULL) + { + static char getchar_call[] = "getchar();"; + cpp_buffer *buf = + cpp_push_buffer (&scan_in, getchar_call, sizeof(getchar_call) - 1); + int old_written = CPP_WRITTEN (&scan_in); + int seen_filbuf = 0; + + /* Scan the macro expansion of "getchar();". */ + for (;;) + { + enum cpp_token token = cpp_get_token (&scan_in); + int length = CPP_WRITTEN (&scan_in) - old_written; + CPP_SET_WRITTEN (&scan_in, old_written); + if (token == CPP_EOF) /* Should not happen ... */ + break; + if (token == CPP_POP && CPP_BUFFER (&scan_in) == buf) + { + cpp_pop_buffer (&scan_in); + break; + } + if (token == CPP_NAME && length == 7 + && strcmp ("_filbuf", scan_in.token_buffer + old_written) == 0) + seen_filbuf++; + } + if (seen_filbuf) + { + int need_filbuf = !SEEN (fn) && !REQUIRED (fn); + struct fn_decl *flsbuf_fn = lookup_std_proto ("_flsbuf", 7); + int need_flsbuf + = flsbuf_fn && !SEEN (flsbuf_fn) && !REQUIRED (flsbuf_fn); + + /* Append "_filbuf" and/or "_flsbuf" to end of + required_functions_list. */ + if (need_filbuf + need_flsbuf) + { + int old_len = namelist_end (required_functions_list) + - required_functions_list; + char *new_list = (char*) xmalloc (old_len + 20); + bcopy (required_functions_list, new_list, old_len); + if (need_filbuf) + { + strcpy (new_list + old_len, "_filbuf"); + old_len += 8; + SET_REQUIRED (fn); + } + if (need_flsbuf) + { + strcpy (new_list + old_len, "_flsbuf"); + old_len += 8; + SET_REQUIRED (flsbuf_fn); + } + new_list[old_len] = '\0'; + required_functions_list = (namelist)new_list; + required_unseen_count += need_filbuf + need_flsbuf; + } + } + } + + if (required_unseen_count + partial_count + missing_errno +#if ADD_MISSING_EXTERN_C + + missing_extern_C_count +#endif + == 0) + { + if (verbose) + fprintf (stderr, "%s: OK, nothing needs to be done.\n", inc_filename); + exit (0); + } + if (!verbose) + fprintf (stderr, "%s: fixing %s\n", progname, inc_filename); + else + { + if (required_unseen_count) + fprintf (stderr, "%s: %d missing function declarations.\n", + inc_filename, required_unseen_count); + if (partial_count) + fprintf (stderr, "%s: %d non-prototype function declarations.\n", + inc_filename, partial_count); +#if ADD_MISSING_EXTERN_C + if (missing_extern_C_count) + fprintf (stderr, + "%s: %d declarations not protected by extern \"C\".\n", + inc_filename, missing_extern_C_count); +#endif + } +} + +void +write_rbrac () +{ + struct fn_decl *fn; + const char *cptr; + + if (required_unseen_count) + { + fprintf (outf, + "#if defined(__cplusplus) || defined(__USE_FIXED_PROTOTYPES__)\n"); +#ifdef NO_IMPLICIT_EXTERN_C + fprintf (outf, "#ifdef __cplusplus\nextern \"C\" {\n#endif\n"); +#endif + } + + /* Now we print out prototypes for those functions that we haven't seen. */ + for (cptr = required_functions_list; *cptr!= '\0'; ) + { + int macro_protect = 0; + int name_len = strlen (cptr); + + fn = lookup_std_proto (cptr, name_len); + cptr+= name_len + 1; + if (fn == NULL || !REQUIRED (fn)) + continue; + + /* In the case of memmove, protect in case the application + defines it as a macro before including the header. */ + if (!strcmp (fn->fname, "memmove") + || !strcmp (fn->fname, "vprintf") + || !strcmp (fn->fname, "vfprintf") + || !strcmp (fn->fname, "vsprintf") + || !strcmp (fn->fname, "rewinddir")) + macro_protect = 1; + + if (macro_protect) + fprintf (outf, "#ifndef %s\n", fn->fname); + fprintf (outf, "extern %s %s (%s);\n", + fn->rtype, fn->fname, fn->params); + if (macro_protect) + fprintf (outf, "#endif\n"); + } + if (required_unseen_count) + { +#ifdef NO_IMPLICIT_EXTERN_C + fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); +#endif + fprintf (outf, + "#endif /* defined(__cplusplus) || defined(__USE_FIXED_PROTOTYPES__*/\n"); + } + + switch (special_file_handling) + { + case errno_h: + if (missing_errno) + fprintf (outf, "extern int errno;\n"); + break; + case sys_stat_h: + if (!seen_S_ISBLK && seen_S_IFBLK) + fprintf (outf, + "#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)\n"); + if (!seen_S_ISCHR && seen_S_IFCHR) + fprintf (outf, + "#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)\n"); + if (!seen_S_ISDIR && seen_S_IFDIR) + fprintf (outf, + "#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)\n"); + if (!seen_S_ISFIFO && seen_S_IFIFO) + fprintf (outf, + "#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)\n"); + if (!seen_S_ISLNK && seen_S_IFLNK) + fprintf (outf, + "#define S_ISLNK(mode) (((mode) & S_IFMT) == S_IFLNK)\n"); + if (!seen_S_ISREG && seen_S_IFREG) + fprintf (outf, + "#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)\n"); + break; + } + + +#if ADD_MISSING_EXTERN_C + if (missing_extern_C_count + required_unseen_count > 0) + fprintf (outf, "#ifdef __cplusplus\n}\n#endif\n"); +#endif +} + +char * +xstrdup (str) + char *str; +{ + char *copy = (char *) xmalloc (strlen (str) + 1); + strcpy (copy, str); + return copy; +} + +/* Returns 1 iff the file is properly protected from multiple inclusion: + #ifndef PROTECT_NAME + #define PROTECT_NAME + #endif + + */ + +#define INF_GET() (inf_ptr < inf_limit ? *(unsigned char*)inf_ptr++ : EOF) +#define INF_UNGET(c) ((c)!=EOF && inf_ptr--) + +int +inf_skip_spaces (c) + int c; +{ + for (;;) + { + if (c == ' ' || c == '\t') + c = INF_GET (); + else if (c == '/') + { + c = INF_GET (); + if (c != '*') + { + INF_UNGET (c); + return '/'; + } + c = INF_GET (); + for (;;) + { + if (c == EOF) + return EOF; + else if (c != '*') + { + if (c == '\n') + source_lineno++, lineno++; + c = INF_GET (); + } + else if ((c = INF_GET ()) == '/') + return INF_GET (); + } + } + else + break; + } + return c; +} + +/* Read into STR from inf_buffer upto DELIM. */ + +int +inf_read_upto (str, delim) + sstring *str; + int delim; +{ + int ch; + for (;;) + { + ch = INF_GET (); + if (ch == EOF || ch == delim) + break; + SSTRING_PUT (str, ch); + } + MAKE_SSTRING_SPACE (str, 1); + *str->ptr = 0; + return ch; +} + +int +inf_scan_ident (s, c) + register sstring *s; + int c; +{ + s->ptr = s->base; + if (isalpha (c) || c == '_') + { + for (;;) + { + SSTRING_PUT (s, c); + c = INF_GET (); + if (c == EOF || !(isalnum (c) || c == '_')) + break; + } + } + MAKE_SSTRING_SPACE (s, 1); + *s->ptr = 0; + return c; +} + +/* Returns 1 if the file is correctly protected against multiple + inclusion, setting *ifndef_line to the line number of the initial #ifndef + and setting *endif_line to the final #endif. + Otherwise return 0. */ + +int +check_protection (ifndef_line, endif_line) + int *ifndef_line, *endif_line; +{ + int c; + int if_nesting = 1; /* Level of nesting of #if's */ + char *protect_name = NULL; /* Identifier following initial #ifndef */ + int define_seen = 0; + + /* Skip initial white space (including comments). */ + for (;; lineno++) + { + c = inf_skip_spaces (' '); + if (c == EOF) + return 0; + if (c != '\n') + break; + } + if (c != '#') + return 0; + c = inf_scan_ident (&buf, inf_skip_spaces (' ')); + if (SSTRING_LENGTH (&buf) == 0 || strcmp (buf.base, "ifndef") != 0) + return 0; + + /* So far so good: We've seen an initial #ifndef. */ + *ifndef_line = lineno; + c = inf_scan_ident (&buf, inf_skip_spaces (c)); + if (SSTRING_LENGTH (&buf) == 0 || c == EOF) + return 0; + protect_name = xstrdup (buf.base); + + INF_UNGET (c); + c = inf_read_upto (&buf, '\n'); + if (c == EOF) + return 0; + lineno++; + + for (;;) + { + c = inf_skip_spaces (' '); + if (c == EOF) + return 0; + if (c == '\n') + { + lineno++; + continue; + } + if (c != '#') + goto skip_to_eol; + c = inf_scan_ident (&buf, inf_skip_spaces (' ')); + if (SSTRING_LENGTH (&buf) == 0) + ; + else if (!strcmp (buf.base, "ifndef") + || !strcmp (buf.base, "ifdef") || !strcmp (buf.base, "if")) + { + if_nesting++; + } + else if (!strcmp (buf.base, "endif")) + { + if_nesting--; + if (if_nesting == 0) + break; + } + else if (!strcmp (buf.base, "else")) + { + if (if_nesting == 1) + return 0; + } + else if (!strcmp (buf.base, "define")) + { + if (if_nesting != 1) + goto skip_to_eol; + c = inf_skip_spaces (c); + c = inf_scan_ident (&buf, c); + if (buf.base[0] > 0 && strcmp (buf.base, protect_name) == 0) + define_seen = 1; + } + skip_to_eol: + for (;;) + { + if (c == '\n' || c == EOF) + break; + c = INF_GET (); + } + if (c == EOF) + return 0; + lineno++; + } + + if (!define_seen) + return 0; + *endif_line = lineno; + /* Skip final white space (including comments). */ + for (;;) + { + c = inf_skip_spaces (' '); + if (c == EOF) + break; + if (c != '\n') + return 0; + } + + return 1; +} + +int +main (argc, argv) + int argc; + char **argv; +{ + int inf_fd; + struct stat sbuf; + int c; + int i, done; + const char *cptr, **pptr; + int ifndef_line; + int endif_line; + long to_read; + long int inf_size; + + if (argv[0] && argv[0][0]) + { + register char *p; + + progname = 0; + for (p = argv[0]; *p; p++) + if (*p == '/') + progname = p; + progname = progname ? progname+1 : argv[0]; + } + + if (argc < 4) + { + fprintf (stderr, "%s: Usage: foo.h infile.h outfile.h options\n", + progname); + exit (-1); + } + + inc_filename = argv[1]; + inc_filename_length = strlen (inc_filename); + +#ifdef FIXPROTO_IGNORE_LIST + for (i = 0; files_to_ignore[i] != NULL; i++) + { + char *ignore_name = files_to_ignore[i]; + int ignore_len = strlen (ignore_name); + if (strncmp (inc_filename, ignore_name, ignore_len) == 0) + { + if (ignore_name[ignore_len-1] == '/' + || inc_filename[ignore_len] == '\0') + { + if (verbose) + fprintf (stderr, "%s: ignoring %s\n", progname, inc_filename); + exit (0); + } + } + + } +#endif + + if (strcmp (inc_filename, "sys/stat.h") == 0) + special_file_handling = sys_stat_h; + else if (strcmp (inc_filename, "errno.h") == 0) + special_file_handling = errno_h, missing_errno = 1; + else if (strcmp (inc_filename, "stdio.h") == 0) + special_file_handling = stdio_h; + include_entry = std_include_table; + while (include_entry->name != NULL + && strcmp (inc_filename, include_entry->name) != 0) + include_entry++; + + required_functions_list = include_entry->required; + + /* Count and mark the prototypes required for this include file. */ + for (cptr = required_functions_list; *cptr!= '\0'; ) + { + int name_len = strlen (cptr); + struct fn_decl *fn = lookup_std_proto (cptr, name_len); + required_unseen_count++; + if (fn == NULL) + fprintf (stderr, "Internal error: No prototype for %s\n", cptr); + else + SET_REQUIRED (fn); + cptr += name_len + 1; + } + + read_scan_file (argv[2], argc - 4, argv + 4); + + inf_fd = open (argv[2], O_RDONLY, 0666); + if (inf_fd < 0) + { + fprintf (stderr, "%s: Cannot open '%s' for reading -", + progname, argv[2]); + perror (NULL); + exit (-1); + } + if (fstat (inf_fd, &sbuf) < 0) + { + fprintf (stderr, "%s: Cannot get size of '%s' -", progname, argv[2]); + perror (NULL); + exit (-1); + } + inf_size = sbuf.st_size; + inf_buffer = (char*) xmalloc (inf_size + 2); + inf_buffer[inf_size] = '\n'; + inf_buffer[inf_size + 1] = '\0'; + inf_limit = inf_buffer + inf_size; + inf_ptr = inf_buffer; + + to_read = inf_size; + while (to_read > 0) + { + long i = read (inf_fd, inf_buffer + inf_size - to_read, to_read); + if (i < 0) + { + fprintf (stderr, "%s: Failed to read '%s' -", progname, argv[2]); + perror (NULL); + exit (-1); + } + if (i == 0) + { + inf_size -= to_read; + break; + } + to_read -= i; + } + + close (inf_fd); + + /* If file doesn't end with '\n', add one. */ + if (inf_limit > inf_buffer && inf_limit[-1] != '\n') + inf_limit++; + + unlink (argv[3]); + outf = fopen (argv[3], "w"); + if (outf == NULL) + { + fprintf (stderr, "%s: Cannot open '%s' for writing -", + progname, argv[3]); + perror (NULL); + exit (-1); + } + + lineno = 1; + + if (check_protection (&ifndef_line, &endif_line)) + { + lbrac_line = ifndef_line+1; + rbrac_line = endif_line; + } + else + { + lbrac_line = 1; + rbrac_line = -1; + } + + /* Reset input file. */ + inf_ptr = inf_buffer; + lineno = 1; + + for (;;) + { + if (lineno == lbrac_line) + write_lbrac (); + if (lineno == rbrac_line) + write_rbrac (); + for (;;) + { + struct fn_decl *fn; + c = INF_GET (); + if (c == EOF) + break; + if (isalpha (c) || c == '_') + { + c = inf_scan_ident (&buf, c); + INF_UNGET (c); + fputs (buf.base, outf); + fn = lookup_std_proto (buf.base, strlen (buf.base)); + /* We only want to edit the declaration matching the one + seen by scan-decls, as there can be multiple + declarations, selected by #ifdef __STDC__ or whatever. */ + if (fn && fn->partial && fn->partial->line_seen == lineno) + { + c = inf_skip_spaces (' '); + if (c == EOF) + break; + if (c == '(') + { + c = inf_skip_spaces (' '); + if (c == ')') + { + fprintf (outf, " _PARAMS((%s))", fn->params); + } + else + { + putc ('(', outf); + INF_UNGET (c); + } + } + else + fprintf (outf, " %c", c); + } + } + else + { + putc (c, outf); + if (c == '\n') + break; + } + } + if (c == EOF) + break; + lineno++; + } + if (rbrac_line < 0) + write_rbrac (); + + fclose (outf); + + return 0; +} + +/* Stub error functions. These replace cpperror.c, + because we want to suppress error messages. */ + +void +cpp_file_line_for_message (pfile, filename, line, column) + cpp_reader *pfile; + char *filename; + int line, column; +{ + if (!verbose) + return; + if (column > 0) + fprintf (stderr, "%s:%d:%d: ", filename, line, column); + else + fprintf (stderr, "%s:%d: ", filename, line); +} + +void +cpp_print_containing_files (pfile) + cpp_reader *pfile; +{ +} + +/* IS_ERROR is 1 for error, 0 for warning */ +void cpp_message (pfile, is_error, msg, arg1, arg2, arg3) + int is_error; + cpp_reader *pfile; + char *msg; + char *arg1, *arg2, *arg3; +{ + if (is_error) + pfile->errors++; + if (!verbose) + return; + if (!is_error) + fprintf (stderr, "warning: "); + fprintf (stderr, msg, arg1, arg2, arg3); + fprintf (stderr, "\n"); +} + +void +fatal (str, arg) + char *str, *arg; +{ + fprintf (stderr, "%s: %s: ", progname, inc_filename); + fprintf (stderr, str, arg); + fprintf (stderr, "\n"); + exit (FATAL_EXIT_CODE); +} + +void +cpp_pfatal_with_name (pfile, name) + cpp_reader *pfile; + char *name; +{ + cpp_perror_with_name (pfile, name); + exit (FATAL_EXIT_CODE); +} |
