1 files changed, 75 insertions, 0 deletions
diff --git a/lib/libcurses/clrtobot.c b/lib/libcurses/clrtobot.c
new file mode 100644
index 0000000..0e73ef8
--- /dev/null
+++ b/lib/libcurses/clrtobot.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 1981, 1993
+ *	The 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	8.1 (Berkeley) 6/4/93";
+#endif	/* not lint */
+
+#include <curses.h>
+
+/*
+ * wclrtobot --
+ *	Erase everything on the window.
+ */
+int
+wclrtobot(win)
+	register WINDOW *win;
+{
+	register int minx, startx, starty, y;
+	register __LDATA *sp, *end, *maxx;
+
+	if (win->lines[win->cury]->flags & __ISPASTEOL) {
+		starty = win->cury + 1;
+		startx = 0;
+	} else {
+		starty = win->cury;
+		startx = win->curx;
+	}
+	for (y = starty; y < win->maxy; y++) {
+		minx = -1;
+		end = &win->lines[y]->line[win->maxx];
+		for (sp = &win->lines[y]->line[startx]; sp < end; sp++)
+			if (sp->ch != ' ' || sp->attr != 0) {
+				maxx = sp;
+				if (minx == -1)
+					minx = sp - win->lines[y]->line;
+				sp->ch = ' ';
+				sp->attr = 0;
+			}
+		if (minx != -1)
+			__touchline(win, y, minx, maxx - win->lines[y]->line,
+		            0);
+		startx = 0;
+	}
+	return (OK);
+}