/* * Copyright (c) 2000, Boris Popov * 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 Boris Popov. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * $Id: cfopt.c,v 1.1.1.1 2001/06/09 00:28:12 zarzycki Exp $ */ #include #include #include #include #include #include #include #include /* lock for the variables below */ mutex_t cf_opt_mutex = DEFAULTMUTEX; int cf_opterr = 1, /* if error message should be printed */ cf_optind = 1, /* index into parent argv vector */ cf_optopt, /* character checked for validity */ cf_optreset; /* reset getopt */ const char *cf_optarg; /* argument associated with option */ #define BADCH (int)'?' #define BADARG (int)':' #define EMSG "" void cf_opt_lock(void) { mutex_lock(&cf_opt_mutex); } void cf_opt_unlock(void) { mutex_unlock(&cf_opt_mutex); } int cf_getopt(nargc, nargv, ostr) int nargc; char * const *nargv; const char *ostr; { static const char *place = EMSG; /* option letter processing */ char *oli; /* option letter list index */ int tmpind; assert(MUTEX_HELD(&cf_opt_mutex)); if (cf_optreset || !*place) { /* update scanning pointer */ cf_optreset = 0; tmpind = cf_optind; for (;;) { if (tmpind >= nargc) { place = EMSG; return (-1); } if (*(place = nargv[tmpind]) != '-') { tmpind++; continue; /* lookup next option */ } if (place[1] && *++place == '-') { /* found "--" */ cf_optind = ++tmpind; place = EMSG; return (-1); } cf_optind = tmpind; break; } } /* option letter okay? */ if ((cf_optopt = (int)*place++) == (int)':' || !(oli = strchr(ostr, cf_optopt))) { /* * if the user didn't specify '-' as an option, * assume it means -1. */ if (cf_optopt == (int)'-') return (-1); if (!*place) ++cf_optind; if (cf_opterr && *ostr != ':') (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "%s: illegal option -- %c\n"), __progname, cf_optopt); return (BADCH); } if (*++oli != ':') { /* don't need argument */ cf_optarg = NULL; if (!*place) ++cf_optind; } else { /* need an argument */ if (*place) /* no white space */ cf_optarg = place; else if (nargc <= ++cf_optind) { /* no arg */ place = EMSG; if (*ostr == ':') return (BADARG); if (cf_opterr) (void) fprintf(stderr, dgettext(TEXT_DOMAIN, "%s: option requires an argument -- %c\n"), __progname, cf_optopt); return (BADCH); } else /* white space */ cf_optarg = nargv[cf_optind]; place = EMSG; ++cf_optind; } return (cf_optopt); /* dump back option letter */ }