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/* wconfig.c */
/*
* Copyright 1995,1996,1997,1998 by the Massachusetts Institute of Technology.
* All Rights Reserved.
*
* Export of this software from the United States of America may
* require a specific license from the United States Government.
* It is the responsibility of any person or organization contemplating
* export to obtain such a license before exporting.
*
* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
* distribute this software and its documentation for any purpose and
* without fee is hereby granted, provided that the above copyright
* notice appear in all copies and that both that copyright notice and
* this permission notice appear in supporting documentation, and that
* the name of M.I.T. not be used in advertising or publicity pertaining
* to distribution of the software without specific, written prior
* permission. Furthermore if you modify this software you must label
* your software as modified software and not distribute it in such a
* fashion that it might be confused with the original M.I.T. software.
* M.I.T. makes no representations about the suitability of
* this software for any purpose. It is provided "as is" without express
* or implied warranty.
*/
/*
* Program to take the place of the configure shell script under DOS.
* The makefile.in files are constructed in such a way that all this
* program needs to do is uncomment lines beginning ##DOS by removing the
* first 5 characters of the line. This will allow lines like:
* ##DOS!include win-pre.in to become: !include win-pre.in
*
* We also turn any line beginning with '@' into a blank line.
*
* If a config directory is specified, then the output will be start with
* config\pre.in, then the filtered stdin text, and will end with
* config\post.in.
*
* Syntax: wconfig [options] [config_directory] <input_file >output_file
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
static int copy_file (char *path, char *fname);
void add_ignore_list(char *str);
int mit_specific = 0;
char *win16_flag = "WIN16##";
char *win32_flag = "WIN32##";
int main(int argc, char *argv[])
{
char *ignore_str = "--ignore=";
int ignore_len;
char *cp, *tmp;
char *win_flag;
char wflags[1024];
size_t wlen, alen;
#ifdef _WIN32
win_flag = win32_flag;
#else
win_flag = "UNIX##";
#endif
wlen = 0;
ignore_len = strlen(ignore_str);
argc--; argv++;
while (*argv && *argv[0] == '-') {
alen = strlen(*argv);
if (wlen + 1 + alen > sizeof (wflags) - 1) {
fprintf (stderr,
"wconfig: argument list too long (internal limit %lu)",
(unsigned long) sizeof (wflags));
exit (1);
}
if (wlen > 0)
wflags[wlen++] = ' ';
memcpy(&wflags[wlen], *argv, alen);
wlen += alen;
if (!strcmp(*argv, "--mit")) {
mit_specific = 1;
argc--; argv++;
continue;
}
if (!strcmp(*argv, "--win16")) {
win_flag = win16_flag;
argc--; argv++;
continue;
}
if (!strcmp(*argv, "--win32")) {
win_flag = win32_flag;
argc--; argv++;
continue;
}
if (!strncmp(*argv, "--enable-", 9)) {
tmp = malloc(alen - ignore_len + 3);
if (!tmp) {
fprintf(stderr,
"wconfig: malloc failed!\n");
exit(1);
}
memcpy(tmp, *argv + ignore_len, alen - ignore_len);
memcpy(tmp + alen - ignore_len, "##", 3);
for (cp = tmp; *cp; cp++) {
if (islower(*cp))
*cp = toupper(*cp);
}
add_ignore_list(tmp);
argc--; argv++;
continue;
}
if (!strncmp(*argv, ignore_str, ignore_len)) {
add_ignore_list((*argv)+ignore_len);
argc--; argv++;
continue;
}
fprintf(stderr, "Invalid option: %s\n", *argv);
exit(1);
}
wflags[wlen] = '\0';
if (win_flag)
add_ignore_list(win_flag);
if (mit_specific)
add_ignore_list("MIT##");
if (wflags[0] && (argc > 0))
printf("WCONFIG_FLAGS=%s\n", wflags);
if (argc > 0)
copy_file (*argv, "win-pre.in");
copy_file("", "-");
if (argc > 0)
copy_file (*argv, "win-post.in");
return 0;
}
char *ignore_list[64] = {
"DOS##",
"DOS",
};
/*
* Add a new item to the ignore list
*/
void add_ignore_list(char *str)
{
char **cpp;
for (cpp = ignore_list; *cpp; cpp++)
;
*cpp = str;
}
/*
*
* Copy_file
*
* Copies file 'path\fname' to stdout.
*
*/
static int
copy_file (char *path, char *fname)
{
FILE *fin;
char buf[1024];
char **cpp, *ptr;
size_t len, plen, flen;
if (strcmp(fname, "-") == 0) {
fin = stdin;
} else {
plen = strlen(path);
flen = strlen(fname);
if (plen + 1 + flen > sizeof(buf) - 1) {
fprintf(stderr, "Name %s or %s too long", path, fname);
return 1;
}
memcpy(buf, path, plen);
#ifdef _WIN32
buf[plen] = '\\';
#else
buf[plen] = '/';
#endif
memcpy(buf + plen + 1, fname, flen);
buf[plen + 1 + flen] = '\0';
fin = fopen (buf, "r"); /* File to read */
if (fin == NULL) {
fprintf(stderr, "wconfig: Can't open file %s\n", buf);
return 1;
}
}
while (fgets (buf, sizeof(buf), fin) != NULL) { /* Copy file over */
if (buf[0] == '@') {
fputs("\n", stdout);
continue;
}
if (buf[0] != '#' || buf[1] != '#') {
fputs(buf, stdout);
continue;
}
ptr = buf;
for (cpp = ignore_list; *cpp; cpp++) {
len = strlen(*cpp);
if (memcmp (*cpp, buf+2, len) == 0) {
ptr += 2+len;
break;
}
}
fputs(ptr, stdout);
}
fclose (fin);
return 0;
}
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