258 lines
7.2 KiB
C
258 lines
7.2 KiB
C
/*
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* Copyright (c) 1987, 1993, 1994
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/* last review : october 29th, 2002 */
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#if defined(LIBC_SCCS) && !defined(lint)
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static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
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#endif /* LIBC_SCCS and not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int opterr = 1, /* if error message should be printed */
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optind = 1, /* index into parent argv vector */
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optopt, /* character checked for validity */
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optreset; /* reset getopt */
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const char *optarg; /* argument associated with option */
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typedef struct option
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{
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char *name;
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int has_arg;
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int *flag;
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int val;
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}option_t;
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#define BADCH (int)'?'
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#define BADARG (int)':'
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#define EMSG ""
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/*
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* getopt --
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* Parse argc/argv argument vector.
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*/
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int getopt(int nargc, char *const *nargv, const char *ostr) {
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# define __progname nargv[0]
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static const char *place = EMSG; /* option letter processing */
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char *oli; /* option letter list index */
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if (optreset || !*place) { /* update scanning pointer */
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optreset = 0;
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if (optind >= nargc || *(place = nargv[optind]) != '-') {
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place = EMSG;
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return (-1);
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}
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if (place[1] && *++place == '-') { /* found "--" */
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++optind;
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place = EMSG;
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return (-1);
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}
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} /* option letter okay? */
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if ((optopt = (int) *place++) == (int) ':' ||
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!(oli = strchr(ostr, optopt))) {
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/*
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* if the user didn't specify '-' as an option,
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* assume it means -1.
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*/
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if (optopt == (int) '-')
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return (-1);
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if (!*place)
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++optind;
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if (opterr && *ostr != ':') {
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fprintf(stderr,
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"%s: illegal option -- %c\n", __progname, optopt);
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return (BADCH);
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}
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}
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if (*++oli != ':') { /* don't need argument */
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optarg = NULL;
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if (!*place)
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++optind;
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} else { /* need an argument */
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if (*place) /* no white space */
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optarg = place;
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else if (nargc <= ++optind) { /* no arg */
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place = EMSG;
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if (*ostr == ':')
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return (BADARG);
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if (opterr) {
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fprintf(stderr,
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"%s: option requires an argument -- %c\n",
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__progname, optopt);
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return (BADCH);
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}
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} else /* white space */
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optarg = nargv[optind];
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place = EMSG;
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++optind;
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}
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return (optopt); /* dump back option letter */
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}
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int getopt_long(int argc, char * const argv[], const char *optstring,
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struct option *longopts, int totlen) {
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static int lastidx,lastofs;
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char *tmp;
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int i,len;
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char param = 1;
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again:
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if (optind>argc || !argv[optind] || *argv[optind]!='-')
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return -1;
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if (argv[optind][0]=='-' && argv[optind][1]==0) {
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if(optind >= (argc - 1)){ /* no more input parameters */
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param = 0;
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}
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else{ /* more input parameters */
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if(argv[optind + 1][0] == '-'){
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param = 0; /* Missing parameter after '-' */
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}
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else{
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param = 2;
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}
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}
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}
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if (param == 0) {
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++optind;
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return (BADCH);
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}
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if (argv[optind][0]=='-') { /* long option */
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char* arg=argv[optind]+1;
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const struct option* o;
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o=longopts;
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len=sizeof(longopts[0]);
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if (param > 1){
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arg = argv[optind+1];
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optind++;
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}
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else
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arg = argv[optind]+1;
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if(strlen(arg)>1){
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for (i=0;i<totlen;i=i+len,o++) {
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if (!strcmp(o->name,arg)) { /* match */
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if (o->has_arg == 0) {
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if ((argv[optind+1])&&(!(argv[optind+1][0]=='-'))){
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fprintf(stderr,"%s: option does not require an argument. Ignoring %s\n",arg,argv[optind+1]);
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++optind;
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}
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}else{
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optarg=argv[optind+1];
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if(optarg){
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if (optarg[0] == '-'){ /* Has read next input parameter: No arg for current parameter */
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if (opterr) {
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fprintf(stderr,"%s: option requires an argument\n",arg);
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return (BADCH);
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}
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}
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}
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if (!optarg && o->has_arg==1) { /* no argument there */
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if (opterr) {
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fprintf(stderr,"%s: option requires an argument \n",arg);
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return (BADCH);
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}
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}
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++optind;
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}
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++optind;
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if (o->flag)
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*(o->flag)=o->val;
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else
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return o->val;
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return 0;
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}
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}//(end for)String not found in the list
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fprintf(stderr,"Invalid option %s\n",arg);
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++optind;
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return (BADCH);
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}else{ /*Single character input parameter*/
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if (*optstring==':') return ':';
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if (lastidx!=optind) {
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lastidx=optind; lastofs=0;
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}
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optopt=argv[optind][lastofs+1];
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if ((tmp=strchr(optstring,optopt))) {/*Found input parameter in list*/
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if (*tmp==0) { /* apparently, we looked for \0, i.e. end of argument */
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++optind;
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goto again;
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}
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if (tmp[1]==':') { /* argument expected */
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if (tmp[2]==':' || argv[optind][lastofs+2]) { /* "-foo", return "oo" as optarg */
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if (!*(optarg=argv[optind]+lastofs+2)) optarg=0;
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goto found;
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}
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optarg=argv[optind+1];
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if(optarg){
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if (optarg[0] == '-'){ /* Has read next input parameter: No arg for current parameter */
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if (opterr) {
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fprintf(stderr,"%s: option requires an argument\n",arg);
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return (BADCH);
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}
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}
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}
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if (!optarg) { /* missing argument */
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if (opterr) {
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fprintf(stderr,"%s: option requires an argument\n",arg);
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return (BADCH);
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}
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}
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++optind;
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}else {/*Argument not expected*/
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++lastofs;
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return optopt;
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}
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found:
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++optind;
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return optopt;
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} else { /* not found */
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fprintf(stderr,"Invalid option %s\n",arg);
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++optind;
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return (BADCH);
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}//end of not found
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}// end of single character
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}//end '-'
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fprintf(stderr,"Invalid option %s\n");
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++optind;
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return (BADCH);;
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}//end function
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