1214 lines
31 KiB
C
1214 lines
31 KiB
C
/* 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;
|
||
|
||
#ifdef FIXPROTO_INIT
|
||
/* Some targets may assume special definitions (for example
|
||
OSF header files assume __LANGUAGE_C__). These macros
|
||
are normally passed to cpplib by gcc - but we here invoke
|
||
cpplib directly, without going through gcc.
|
||
Handle these and other target-dependent initializations here. */
|
||
FIXPROTO_INIT (&scan_in);
|
||
#endif
|
||
|
||
/* Actually (pre-)process the header file. */
|
||
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);
|
||
}
|