int getopt(int nargc, char *nargv[], char *ostr)
{
static char *__progname = 0;
static char *place = EMSG; /* option letter processing */
char *oli; /* option letter list index */
__progname = __progname?__progname:_progname(*nargv);
if (optreset || !*place)
{
optreset = 0;
if (optind >= nargc || *(place = nargv[optind]) != '-')
{
place = EMSG;
return (-1);
}
if (place[1] && *++place == '-' && place[1] == '\0')
{
++optind;
place = EMSG;
return (-1);
}
}
if ((optopt = (int)*place++) == (int)':' || !(oli = strchr(ostr, optopt)))
{
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 != ':')
{
optarg = NULL;
if (!*place)
++optind;
}
else
{
if (*place)
optarg = place;
else if (nargc <= ++optind)
{
place = EMSG;
if (*ostr == ':')
return (BADARG);
if (opterr)
(void)fprintf(stderr, "%s: option requires an argument -- %c\n", __progname, optopt);
return (BADCH);
}
else
optarg = nargv[optind];
place = EMSG;
++optind;
}
return (optopt);
}
/*
* getopt --
* Parse argc/argv argument vector.
*/
int
getopt(
int nargc,
char * const nargv[],
const char *ostr)
{
static char *__progname = 0;
static char *place = EMSG; /* option letter processing */
const char *oli; /* option letter list index */
__progname = __progname?__progname:_progname(*nargv);
_DIAGASSERT(nargv != NULL);
_DIAGASSERT(ostr != NULL);
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] == '\0') {
++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 */
}
