+/* $NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $ */
+
/*
* Copyright (c) 1987, 1993, 1994
* The Regents of the University of California. All rights reserved.
* 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.
static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdlib/getopt.c,v 1.6 2002/03/29 22:43:42 markm Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdlib/getopt.c,v 1.8 2007/01/09 00:28:10 imp Exp $");
#include "namespace.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+#include <unistd.h>
#include "un-namespace.h"
#include "libc_private.h"
+#ifndef BUILDING_VARIANT
int opterr = 1, /* if error message should be printed */
optind = 1, /* index into parent argv vector */
optopt, /* character checked for validity */
optreset; /* reset getopt */
char *optarg; /* argument associated with option */
+#endif /* !BUILDING_VARIANT */
#define BADCH (int)'?'
#define BADARG (int)':'
#define EMSG ""
+#if __DARWIN_UNIX03
+#define PROGNAME nargv[0]
+#else
+#define PROGNAME _getprogname()
+#endif
+
/*
* getopt --
* Parse argc/argv argument vector.
int
getopt(nargc, nargv, ostr)
int nargc;
- char * const *nargv;
+ char * const nargv[];
const char *ostr;
{
static char *place = EMSG; /* option letter processing */
char *oli; /* option letter list index */
- if (optreset || !*place) { /* update scanning pointer */
+ if (optreset || *place == 0) { /* update scanning pointer */
optreset = 0;
- if (optind >= nargc || *(place = nargv[optind]) != '-') {
+ place = nargv[optind];
+ if (optind >= nargc || *place++ != '-') {
+ /* Argument is absent or is not an option */
place = EMSG;
return (-1);
}
- if (place[1] && *++place == '-') { /* found "--" */
+ optopt = *place++;
+ if (optopt == '-' && *place == 0) {
+ /* "--" => end of options */
++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)
+ if (optopt == 0) {
+ /* Solitary '-', treat as a '-' option
+ if the program (eg su) is looking for it. */
+ place = EMSG;
+ if (strchr(ostr, '-') == NULL)
+ return (-1);
+ optopt = '-';
+ }
+ } else
+ optopt = *place++;
+
+ /* See if option letter is one the caller wanted... */
+ if (optopt == ':' || (oli = strchr(ostr, optopt)) == NULL) {
+ if (*place == 0)
++optind;
- if (opterr && *ostr != ':' && optopt != BADCH)
- (void)fprintf(stderr, "%s: illegal option -- %c\n",
- _getprogname(), optopt);
+ if (opterr && *ostr != ':')
+ (void)fprintf(stderr,
+ "%s: illegal option -- %c\n",
+ PROGNAME, optopt);
return (BADCH);
}
- if (*++oli != ':') { /* don't need argument */
+
+ /* Does this option need an argument? */
+ if (oli[1] != ':') {
+ /* don't need argument */
optarg = NULL;
- if (!*place)
+ if (*place == 0)
++optind;
- }
- else { /* need an argument */
- if (*place) /* no white space */
+ } else {
+ /* Option-argument is either the rest of this argument or the
+ entire next argument. */
+ if (*place)
optarg = place;
- else if (nargc <= ++optind) { /* no arg */
+ else if (nargc > ++optind)
+ optarg = nargv[optind];
+ else {
+ /* option-argument absent */
+#if __DARWIN_UNIX03
+ /* Yes, the standard will put optind past the last
+ argument */
+ ++optind;
+ optarg = NULL;
+#endif /* __DARWIN_UNIX03 */
place = EMSG;
if (*ostr == ':')
return (BADARG);
if (opterr)
(void)fprintf(stderr,
"%s: option requires an argument -- %c\n",
- _getprogname(), optopt);
+ PROGNAME, optopt);
return (BADCH);
}
- else /* white space */
- optarg = nargv[optind];
place = EMSG;
++optind;
}
- return (optopt); /* dump back option letter */
+ return (optopt); /* return option letter */
}
projects / apple / libc.git / blobdiff