diff options
Diffstat (limited to 'getopt.c')
| -rw-r--r-- | getopt.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/getopt.c b/getopt.c new file mode 100644 index 0000000..c40bc13 --- /dev/null +++ b/getopt.c @@ -0,0 +1,179 @@ +/* + * 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. 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 + * 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. + */ + +#ifdef HAVE_CONFIG_H +# 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 1.3 1999/01/08 02:14:18 sjg Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + + +#define BADCH (int)'?' +#define BADARG (int)':' +#define EMSG "" + +int opterr = 1, /* if error message should be printed */ + optind = 1, /* index into parent argv vector */ + optopt = BADCH, /* character checked for validity */ + optreset; /* reset getopt */ +char *optarg; /* argument associated with option */ + +/* + * getopt -- + * Parse argc/argv argument vector. + */ +int +getopt(nargc, nargv, ostr) + int nargc; + char * const *nargv; + const char *ostr; +{ + extern char *__progname; + static char *place = EMSG; /* option letter processing */ + char *oli; /* option letter list index */ + +#ifndef BSD4_4 + if (!__progname) { + if (__progname = strrchr(nargv[0], '/')) + ++__progname; + else + __progname = nargv[0]; + } +#endif + + if (optreset || !*place) { /* update scanning pointer */ + optreset = 0; + if (optind >= nargc || *(place = nargv[optind]) != '-') { + place = EMSG; + return (-1); + } + if (place[1] && *++place == '-' /* found "--" */ + && !place[1]) { /* and not "--foo" */ + ++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) + ++optind; + if (opterr && *ostr != ':') + (void)fprintf(stderr, + "%s: illegal option -- %c\n", __progname, optopt); + return (BADCH); + } + if (*++oli != ':') { /* don't need argument */ + optarg = NULL; + if (!*place) + ++optind; + } + else { /* need an argument */ + if (*place) /* no white space */ + optarg = place; + else if (nargc <= ++optind) { /* no arg */ + place = EMSG; + if (*ostr == ':') + return (BADARG); + if (opterr) + (void)fprintf(stderr, + "%s: option requires an argument -- %c\n", + __progname, optopt); + return (BADCH); + } + else /* white space */ + optarg = nargv[optind]; + place = EMSG; + ++optind; + } + return (optopt); /* dump back option letter */ +} +#endif +#ifdef MAIN +#ifndef BSD4_4 +char *__progname; +#endif + +int +main(argc, argv) + int argc; + char *argv[]; +{ + int c; + char *opts = argv[1]; + + --argc; + ++argv; + + while ((c = getopt(argc, argv, opts)) != EOF) { + switch (c) { + case '-': + if (optarg) + printf("--%s ", optarg); + break; + case '?': + exit(1); + break; + default: + if (optarg) + printf("-%c %s ", c, optarg); + else + printf("-%c ", c); + break; + } + } + + if (optind < argc) { + printf("-- "); + for (; optind < argc; ++optind) { + printf("%s ", argv[optind]); + } + } + printf("\n"); + exit(0); +} +#endif |