diff options
Diffstat (limited to 'devel/bmake/files/getopt.c')
| -rw-r--r-- | devel/bmake/files/getopt.c | 89 |
1 files changed, 49 insertions, 40 deletions
diff --git a/devel/bmake/files/getopt.c b/devel/bmake/files/getopt.c index eb1f0e65fe7..8945275bb8c 100644 --- a/devel/bmake/files/getopt.c +++ b/devel/bmake/files/getopt.c @@ -1,3 +1,5 @@ +/* $NetBSD: getopt.c,v 1.1.1.4 2020/05/24 05:35:52 nia Exp $ */ + /* * Copyright (c) 1987, 1993, 1994 * The Regents of the University of California. All rights reserved. @@ -10,11 +12,7 @@ * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors + * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * @@ -35,11 +33,7 @@ # include "config.h" #endif #if !defined(HAVE_GETOPT) || defined(WANT_GETOPT_LONG) || defined(BROKEN_GETOPT) - -#if defined(LIBC_SCCS) && !defined(lint) -/* static char sccsid[] = "from: @(#)getopt.c 8.2 (Berkeley) 4/2/94"; */ -static char *rcsid = "$Id: getopt.c,v 1.1.1.3 2009/09/18 20:55:25 joerg Exp $"; -#endif /* LIBC_SCCS and not lint */ +#include <sys/cdefs.h> #include <stdio.h> #include <stdlib.h> @@ -61,13 +55,10 @@ char *optarg; /* argument associated with option */ * Parse argc/argv argument vector. */ int -getopt(nargc, nargv, ostr) - int nargc; - char * const *nargv; - const char *ostr; +getopt(int nargc, char * const nargv[], const char *ostr) { extern char *__progname; - static char *place = EMSG; /* option letter processing */ + static const char *place = EMSG; /* option letter processing */ char *oli; /* option letter list index */ #ifndef BSD4_4 @@ -79,43 +70,63 @@ getopt(nargc, nargv, ostr) } #endif - if (optreset || !*place) { /* update scanning pointer */ + if (optreset || *place == 0) { /* update scanning pointer */ optreset = 0; - if (optind >= nargc || *(place = nargv[optind]) != '-') { + place = nargv[optind]; + if (optind >= nargc || *place++ != '-') { + /* Argument is absent or is not an option */ place = EMSG; return (-1); } - if (place[1] && *++place == '-' /* found "--" */ - && !place[1]) { /* and not "--foo" */ + optopt = *place++; + if (optopt == '-' && *place == 0) { + /* "--" => end of options */ ++optind; place = EMSG; return (-1); } - } /* option letter okay? */ - if ((optopt = (int)*place++) == (int)':' || - !(oli = strchr(ostr, optopt))) { - /* - * if the user didn't specify '-' as an option, - * assume it means -1. - */ - if (optopt == (int)'-') - return (-1); - if (!*place) + if (optopt == 0) { + /* Solitary '-', treat as a '-' option + if the program (eg su) is looking for it. */ + place = EMSG; + if (strchr(ostr, '-') == NULL) + return -1; + optopt = '-'; + } + } else + optopt = *place++; + + /* See if option letter is one the caller wanted... */ + if (optopt == ':' || (oli = strchr(ostr, optopt)) == NULL) { + if (*place == 0) ++optind; if (opterr && *ostr != ':') (void)fprintf(stderr, - "%s: illegal option -- %c\n", __progname, optopt); + "%s: unknown option -- %c\n", __progname, optopt); return (BADCH); } - if (*++oli != ':') { /* don't need argument */ + + /* Does this option need an argument? */ + if (oli[1] != ':') { + /* don't need argument */ optarg = NULL; - if (!*place) + if (*place == 0) ++optind; - } - else { /* need an argument */ - if (*place) /* no white space */ - optarg = place; - else if (nargc <= ++optind) { /* no arg */ + } else { + /* Option-argument is either the rest of this argument or the + entire next argument. */ + if (*place) + optarg = __UNCONST(place); + else if (oli[2] == ':') + /* + * GNU Extension, for optional arguments if the rest of + * the argument is empty, we return NULL + */ + optarg = NULL; + else if (nargc > ++optind) + optarg = nargv[optind]; + else { + /* option-argument absent */ place = EMSG; if (*ostr == ':') return (BADARG); @@ -125,12 +136,10 @@ getopt(nargc, nargv, ostr) __progname, optopt); return (BADCH); } - else /* white space */ - optarg = nargv[optind]; place = EMSG; ++optind; } - return (optopt); /* dump back option letter */ + return (optopt); /* return option letter */ } #endif #ifdef MAIN |