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- /* (C) Copyright 1993,1994 by Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify, distribute, and sell this software
- * and its documentation for any purpose is hereby granted without
- * fee, 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 Carnegie
- * Mellon University not be used in advertising or publicity
- * pertaining to distribution of the software without specific,
- * written prior permission. Carnegie Mellon University makes no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied
- * warranty.
- *
- * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
- * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
- * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
- * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
- * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
- * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
- #include <stdio.h>
-
- #ifdef __OS2__
- # include <io.h>
- #endif
-
- #if defined(__MSDOS__) || defined(__OS2__)
- #define ERR(s, c) \
- if (opterr) { \
- char buff[3]; \
- buff[0] = c; buff[1] = '\r'; buff[2] = '\n'; \
- (void)write(2, av[0], strlen(av[0])); \
- (void)write(2, s, strlen(s)); \
- (void)write(2, buff, 3); \
- }
- #else /* __MSDOS__ */
- #define ERR(s, c) \
- if (opterr) { \
- char buff[2]; \
- buff[0] = c; buff[1] = '\n'; \
- (void)write(2, av[0], strlen(av[0])); \
- (void)write(2, s, strlen(s)); \
- (void)write(2, buff, 2); \
- }
- #endif
-
- int opterr = 1;
- int optind = 1;
- int optopt;
- char *optarg;
-
-
- /*
- ** Return options and their values from the command line.
- ** This comes from the AT&T public-domain getopt published in mod.sources
- ** (i.e., comp.sources.unix before the great Usenet renaming).
- */
- int
- getopt(ac, av, opts)
- int ac;
- char *av[];
- char *opts;
- {
- extern char *strchr();
- static int i = 1;
- char *p;
-
- /* Move to next value from argv? */
- if (i == 1) {
- if (optind >= ac ||
- #if defined(__MSDOS__) || defined(__OS2__)
- (av[optind][0] != '-' && av[optind][0] != '/')
- #else
- av[optind][0] != '-'
- #endif
- || av[optind][1] == '\0')
- return EOF;
- if (strcmp(av[optind], "--") == 0) {
- optind++;
- return EOF;
- }
- }
-
- /* Get next option character. */
- if ((optopt = av[optind][i]) == ':'
- || (p = strchr(opts, optopt)) == NULL) {
- ERR(": illegal option -- ", optopt);
- if (av[optind][++i] == '\0') {
- optind++;
- i = 1;
- }
- return '?';
- }
-
- /* Snarf argument? */
- if (*++p == ':') {
- if (av[optind][i + 1] != '\0')
- optarg = &av[optind++][i + 1];
- else {
- if (++optind >= ac) {
- ERR(": option requires an argument -- ", optopt);
- i = 1;
- return '?';
- }
- optarg = av[optind++];
- }
- i = 1;
- }
- else {
- if (av[optind][++i] == '\0') {
- i = 1;
- optind++;
- }
- optarg = NULL;
- }
-
- return optopt;
- }
-