246 lines
6.7 KiB
C
246 lines
6.7 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
|
|
/* last review : october 29th, 2002 */
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
int opterr = 1, /* if error message should be printed */
|
|
optind = 1, /* index into parent argv vector */
|
|
optopt, /* character checked for validity */
|
|
optreset; /* reset getopt */
|
|
const char *optarg; /* argument associated with option */
|
|
|
|
typedef struct option
|
|
{
|
|
char *name;
|
|
int has_arg;
|
|
int *flag;
|
|
int val;
|
|
}option_t;
|
|
|
|
#define BADCH (int)'?'
|
|
#define BADARG (int)':'
|
|
#define EMSG ""
|
|
|
|
|
|
|
|
static void getopterror(int which) {
|
|
static char error1[]="Unknown option `-x'.\n";
|
|
static char error2[]="Missing argument for `-x'.\n";
|
|
if (opterr) {
|
|
if (which) {
|
|
error2[23]=optopt;
|
|
fprintf(stderr,"%s\n",error2);
|
|
|
|
} else {
|
|
error1[17]=optopt;
|
|
fprintf(stderr,"%s\n",error1);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* getopt --
|
|
* Parse argc/argv argument vector.
|
|
*/
|
|
int getopt(int nargc, char *const *nargv, const char *ostr) {
|
|
# define __progname nargv[0]
|
|
static const char *place = EMSG; /* option letter processing */
|
|
char *oli; /* option letter list index */
|
|
|
|
if (optreset || !*place) { /* update scanning pointer */
|
|
optreset = 0;
|
|
if (optind >= nargc || *(place = nargv[optind]) != '-') {
|
|
place = EMSG;
|
|
return (-1);
|
|
}
|
|
if (place[1] && *++place == '-') { /* found "--" */
|
|
++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 */
|
|
}
|
|
|
|
|
|
int getopt_long(int argc, char * const argv[], const char *optstring,
|
|
struct option *longopts, int *longindex, int totlen) {
|
|
static int lastidx,lastofs;
|
|
char *tmp;
|
|
int i,len;
|
|
again:
|
|
if (optind>argc || !argv[optind] || *argv[optind]!='-' || argv[optind][1]==0)
|
|
return -1;
|
|
|
|
if (argv[optind][0]=='-' && argv[optind][1]==0) {
|
|
++optind;
|
|
return -1;
|
|
}
|
|
|
|
if (argv[optind][0]=='-') { /* long option */
|
|
char* arg=argv[optind]+1;
|
|
char* max=strchr(arg,'=');
|
|
const struct option* o;
|
|
if (!max) max=arg+strlen(arg);
|
|
o=longopts;
|
|
len=sizeof(longopts[0]);
|
|
|
|
for (i=0;i<totlen;i=i+len,o++) {
|
|
if (!strncmp(o->name,arg,(size_t)(max-arg))) { /* match */
|
|
if (longindex) *longindex=o-longopts;
|
|
if (o->has_arg>0) {
|
|
if (*max=='=')
|
|
optarg=max+1;
|
|
else {
|
|
optarg=argv[optind+1];
|
|
if(optarg){
|
|
if (strchr(optarg,'-')){ /* No argument */
|
|
if (*optstring==':') return ':';
|
|
if (opterr)
|
|
(void) fprintf(stderr,"%s: option requires an argument %c\n",arg, optopt);
|
|
return (BADCH);
|
|
++optind;
|
|
}
|
|
}
|
|
if (!optarg && o->has_arg==1) { /* no argument there */
|
|
if (*optstring==':') return ':';
|
|
if (opterr)
|
|
(void) fprintf(stderr,"%s: option requires an argument %c\n",arg, optopt);
|
|
return (BADCH);
|
|
++optind;
|
|
}
|
|
++optind;
|
|
}
|
|
}
|
|
++optind;
|
|
if (o->flag)
|
|
*(o->flag)=o->val;
|
|
else
|
|
return o->val;
|
|
return 0;
|
|
}
|
|
}//(end for)
|
|
|
|
if (*optstring==':') return ':';
|
|
|
|
if (lastidx!=optind) {
|
|
lastidx=optind; lastofs=0;
|
|
}
|
|
optopt=argv[optind][lastofs+1];
|
|
|
|
if ((tmp=strchr(optstring,optopt))) {
|
|
if (*tmp==0) { /* apparently, we looked for \0, i.e. end of argument */
|
|
++optind;
|
|
goto again;
|
|
}
|
|
|
|
if (tmp[1]==':') { /* argument expected */
|
|
if (tmp[2]==':' || argv[optind][lastofs+2]) { /* "-foo", return "oo" as optarg */
|
|
if (!*(optarg=argv[optind]+lastofs+2)) optarg=0;
|
|
goto found;
|
|
}
|
|
|
|
optarg=argv[optind+1];
|
|
if (!optarg) { /* missing argument */
|
|
++optind;
|
|
if (*optstring==':') return ':';
|
|
getopterror(1);
|
|
return ':';
|
|
}
|
|
++optind;
|
|
}
|
|
else {
|
|
++lastofs;
|
|
return optopt;
|
|
}
|
|
found:
|
|
++optind;
|
|
return optopt;
|
|
}
|
|
else { /* not found */
|
|
getopterror(0);
|
|
++optind;
|
|
return '?';
|
|
}
|
|
|
|
fprintf(stderr,"Invalid option %s\n",arg);
|
|
++optind;
|
|
return '?';
|
|
}// end of long option
|
|
}
|