1 files changed, 58 insertions, 0 deletions
diff --git a/usr/src/lib/libcurses/screen/ungetwch.c b/usr/src/lib/libcurses/screen/ungetwch.c
new file mode 100644
index 0000000000..1079ab0cc8
--- /dev/null
+++ b/usr/src/lib/libcurses/screen/ungetwch.c
@@ -0,0 +1,58 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*  Copyright (c) 1988 AT&T */
+/*    All Rights Reserved   */
+
+
+/*
+ *      Copyright (c) 1997, by Sun Microsystems, Inc.
+ *      All rights reserved.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*LINTLIBRARY*/
+
+#include	<sys/types.h>
+#include	"curses_inc.h"
+
+/*
+ *	Push a process code back into the input stream
+ */
+
+int
+ungetwch(wchar_t code)
+{
+	int	i, n;
+	char	buf[CSMAX];
+
+	n = _curs_wctomb(buf, code & TRIM);
+	for (i = n - 1; i >= 0; --i)
+		if (ungetch((unsigned char)buf[i]) == ERR) {
+			/* remove inserted characters */
+			for (i = i + 1; i < n; ++i)
+				(void) tgetch(0);
+			return (ERR);
+		}
+
+	return (OK);
+}