1 files changed, 66 insertions, 0 deletions
diff --git a/lib/libcurses/clrtobot.c b/lib/libcurses/clrtobot.c
new file mode 100644
index 000000000000..86324389956f
--- /dev/null
+++ b/lib/libcurses/clrtobot.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 1981 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)clrtobot.c	5.5 (Berkeley) 6/1/90";
+#endif /* not lint */
+
+# include	"curses.ext"
+
+/*
+ *	This routine erases everything on the window.
+ *
+ */
+wclrtobot(win)
+reg WINDOW	*win; {
+
+	reg int		y;
+	reg chtype      *sp, *end, *maxx;
+	reg int		startx, minx;
+
+	startx = win->_curx;
+	for (y = win->_cury; y < win->_maxy; y++) {
+		minx = _NOCHANGE;
+		end = &win->_y[y][win->_maxx];
+		for (sp = &win->_y[y][startx]; sp < end; sp++)
+			if (*sp != ' ') {
+				maxx = sp;
+				if (minx == _NOCHANGE)
+					minx = sp - win->_y[y];
+				*sp = ' ';
+			}
+		if (minx != _NOCHANGE)
+			touchline(win, y, minx, maxx - &win->_y[y][0]);
+		startx = 0;
+	}
+}