OpenSolaris Launch

1 files changed, 56 insertions, 0 deletions

diff --git a/usr/src/lib/libcurses/screen/wmoveprevch.c b/usr/src/lib/libcurses/screen/wmoveprevch.c
new file mode 100644
index 0000000000..16d4f965e0
--- /dev/null
+++ b/usr/src/lib/libcurses/screen/wmoveprevch.c
@@ -0,0 +1,56 @@
+/*
+ * 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 by Sun Microsystems, Inc.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+/*LINTLIBRARY*/
+
+#include	<sys/types.h>
+#include	"curses_inc.h"
+
+int
+wmoveprevch(WINDOW *win)
+/*
+ * wmoveprevch --- moves the cursor back to the previous char of char
+ * cursor is currently on.  This is used to move back over a multi-column
+ * character.  When the cursor is on a character at the left-most
+ * column, the cursor will stay there.
+ */
+{
+	chtype	*_yy;
+	short	x;
+
+	(void) wadjcurspos(win);
+	x = win->_curx;
+	if (x == 0) /* Can't back up any more. */
+		return (ERR);
+	_yy = win->_y[win->_cury];
+	--x;
+	while ((x > 0) && (ISCBIT(_yy[x])))
+		--x;
+	win->_curx = x;
+	win->_flags |= _WINMOVED;
+	return (win->_immed ? wrefresh(win): OK);
+}