1 files changed, 106 insertions, 0 deletions
diff --git a/usr.sbin/xntpd/lib/getopt.c b/usr.sbin/xntpd/lib/getopt.c
new file mode 100644
index 0000000..0ab3c29
--- /dev/null
+++ b/usr.sbin/xntpd/lib/getopt.c
@@ -0,0 +1,106 @@
+/* getopt.c,v 3.1 1993/07/06 01:08:18 jbj Exp
+ * getopt - get option letter from argv
+ *
+ * This is a version of the public domain getopt() implementation by
+ * Henry Spencer, changed for 4.3BSD compatibility (in addition to System V).
+ * It allows rescanning of an option list by setting optind to 0 before
+ * calling.  Thanks to Dennis Ferguson for the appropriate modifications.
+ *
+ * This file is in the Public Domain.
+ */
+
+/*LINTLIBRARY*/
+
+#include <stdio.h>
+
+#include "ntp_stdlib.h"
+
+#ifdef	lint
+#undef	putc
+#define	putc	fputc
+#endif	/* lint */
+
+char	*optarg;	/* Global argument pointer. */
+#ifndef	__convex__
+int	optind = 0;	/* Global argv index. */
+#else	/* __convex__ */
+extern	int	optind;	/* Global argv index. */
+#endif	/* __convex__ */
+
+/*
+ * N.B. use following at own risk
+ */
+#ifndef	__convex__
+int	opterr = 1;	/* for compatibility, should error be printed? */
+#else	/* __convex__ */
+extern	int	opterr;	/* for compatibility, should error be printed? */
+#endif	/* __convex__ */
+int	optopt;		/* for compatibility, option character checked */
+
+static char	*scan = NULL;	/* Private scan pointer. */
+
+/*
+ * Print message about a bad option.  Watch this definition, it's
+ * not a single statement.
+ */
+#define	BADOPT(mess, ch)	if (opterr) { \
+					fputs(argv[0], stderr); \
+					fputs(mess, stderr); \
+					(void) putc(ch, stderr); \
+					(void) putc('\n', stderr); \
+				} \
+				return('?')
+
+int
+getopt_l(argc, argv, optstring)
+	int argc;
+	char *argv[];
+	char *optstring;
+{
+	register char c;
+	register char *place;
+
+	optarg = NULL;
+
+	if (optind == 0) {
+		scan = NULL;
+		optind++;
+	}
+	
+	if (scan == NULL || *scan == '\0') {
+		if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')
+			return EOF;
+		if (argv[optind][1] == '-' && argv[optind][2] == '\0') {
+			optind++;
+			return EOF;
+		}
+	
+		scan = argv[optind]+1;
+		optind++;
+	}
+
+	c = *scan++;
+	optopt = c & 0377;
+	for (place = optstring; place != NULL && *place != '\0'; ++place)
+		if (*place == c)
+			break;
+
+	if (place == NULL || *place == '\0' || c == ':' || c == '?') {
+		BADOPT(": unknown option -", c);
+	}
+
+	place++;
+	if (*place == ':') {
+		if (*scan != '\0') {
+			optarg = scan;
+			scan = NULL;
+		} else if (optind >= argc) {
+			BADOPT(": option requires argument -", c);
+		} else {
+			optarg = argv[optind];
+			optind++;
+		}
+	}
+
+	return c&0377;
+}