1 files changed, 106 insertions, 0 deletions
diff --git a/usr/src/lib/libbc/libc/gen/common/getopt.c b/usr/src/lib/libbc/libc/gen/common/getopt.c
new file mode 100644
index 0000000000..e15aee926b
--- /dev/null
+++ b/usr/src/lib/libbc/libc/gen/common/getopt.c
@@ -0,0 +1,106 @@
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+	  /* from 4.3BSD-tahoe 4.9 6/23/89 */
+
+/*
+ * Copyright (c) 1989 Sun Microsystems, Inc.
+ */
+/*
+ * Copyright (c) 1987 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+/* LINTLIBRARY */
+
+#include <stdio.h>
+#include <string.h>
+
+/*
+ * get option letter from argument vector
+ */
+/* See lib/libc/gen/common/optind.c for next 3 definitions. */
+extern char	*optarg;	/* argument associated with option */
+extern int	opterr;		/* if error message should be printed */
+extern int	optind;		/* index into parent argv vector */
+int		optopt;		/* character checked for validity */
+
+
+#define	BADCH	(int)'?'
+#define	EMSG	""
+
+getopt(nargc, nargv, ostr)
+	int nargc;
+	char **nargv, *ostr;
+{
+	static char *place = EMSG;		/* option letter processing */
+	register char *oli;			/* option letter list index */
+	char *p;
+
+	if (!*place) {				/* update scanning pointer */
+		if (optind >= nargc || *(place = nargv[optind]) != '-') {
+			place = EMSG;
+			return (EOF);
+		}
+		if (place[1] && *++place == '-') {	/* found "--" */
+			++optind;
+			place = EMSG;
+			return (EOF);
+		}
+	}					/* option letter okay? */
+	if ((optopt = (int)*place++) == (int)':' ||
+	    !(oli = strchr(ostr, optopt))) {
+
+		/*
+		 * For backwards compatibility: don't treat '-' as an
+		 * option letter unless caller explicitly asked for it.
+		 */
+		if (optopt == (int)'-')
+			return (EOF);
+		if (!*place)
+			++optind;
+		if (opterr) {
+			if (!(p = strrchr(*nargv, '/')))
+				p = *nargv;
+			else
+				++p;
+			(void)fprintf(stderr, "%s: illegal option -- %c\n",
+			    p, 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 (!(p = strrchr(*nargv, '/')))
+				p = *nargv;
+			else
+				++p;
+			if (opterr)
+				(void)fprintf(stderr,
+				    "%s: option requires an argument -- %c\n",
+				    p, optopt);
+			return (BADCH);
+		} else				/* white space */
+			optarg = nargv[optind];
+		place = EMSG;
+		++optind;
+	}
+	return (optopt);			/* dump back option letter */
+}