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Diffstat (limited to 'pkgtools/libnbcompat/files/getopt.c')
| -rw-r--r-- | pkgtools/libnbcompat/files/getopt.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/pkgtools/libnbcompat/files/getopt.c b/pkgtools/libnbcompat/files/getopt.c new file mode 100644 index 00000000000..2d06b8eabb8 --- /dev/null +++ b/pkgtools/libnbcompat/files/getopt.c @@ -0,0 +1,149 @@ +/* $NetBSD: getopt.c,v 1.1 2009/03/22 22:33:13 joerg Exp $ */ + +/* + * Copyright (c) 1987, 1993, 1994 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 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. 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. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#if HAVE_NBTOOL_CONFIG_H +#include "nbtool_config.h" +#endif + +#include <nbcompat.h> +#include <nbcompat/cdefs.h> + +__RCSID("$NetBSD: getopt.c,v 1.1 2009/03/22 22:33:13 joerg Exp $"); + +#if 0 +#include "namespace.h" +#endif + +#include <nbcompat/assert.h> +#include <errno.h> +#include <nbcompat/stdio.h> +#include <nbcompat/stdlib.h> +#include <nbcompat/string.h> +#include <nbcompat/unistd.h> + +#undef __UNCONST +#define __UNCONST(a) ((void *)(size_t)(const void *)(a)) + +#if 0 +#ifdef __weak_alias +__weak_alias(getopt,_getopt) +#endif +#endif + +int opterr = 1, /* if error message should be printed */ + optind = 1, /* index into parent argv vector */ + optopt, /* character checked for validity */ + optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG "" + +/* + * getopt -- + * Parse argc/argv argument vector. + */ +int +getopt(int nargc, char * const nargv[], const char *ostr) +{ + static const char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + + _DIAGASSERT(nargv != NULL); + _DIAGASSERT(ostr != NULL); + + if (optreset || *place == 0) { /* update scanning pointer */ + optreset = 0; + place = nargv[optind]; + if (optind >= nargc || *place++ != '-') { + /* Argument is absent or is not an option */ + place = EMSG; + return (-1); + } + optopt = *place++; + if (optopt == '-' && *place == 0) { + /* "--" => end of options */ + ++optind; + place = EMSG; + return (-1); + } + 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: unknown option -- %c\n", getprogname(), + optopt); + return (BADCH); + } + + /* Does this option need an argument? */ + if (oli[1] != ':') { + /* don't need argument */ + optarg = NULL; + if (*place == 0) + ++optind; + } else { + /* Option-argument is either the rest of this argument or the + entire next argument. */ + if (*place) + optarg = __UNCONST(place); + else if (nargc > ++optind) + optarg = nargv[optind]; + else { + /* option-argument absent */ + place = EMSG; + if (*ostr == ':') + return (BADARG); + if (opterr) + (void)fprintf(stderr, + "%s: option requires an argument -- %c\n", + getprogname(), optopt); + return (BADCH); + } + place = EMSG; + ++optind; + } + return (optopt); /* return option letter */ +} |