initial import of NetBSD tree

1 files changed, 94 insertions, 0 deletions

diff --git a/usr.bin/window/wwinsline.c b/usr.bin/window/wwinsline.c
new file mode 100644
index 00000000000..1189d6e4424
--- /dev/null
+++ b/usr.bin/window/wwinsline.c
@@ -0,0 +1,94 @@
+/*	$NetBSD: wwinsline.c,v 1.3 1995/09/28 10:35:36 tls Exp $	*/
+
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Edward Wang at The University of California, Berkeley.
+ *
+ * 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
+#if 0
+static char sccsid[] = "@(#)wwinsline.c	8.1 (Berkeley) 6/6/93";
+#else
+static char rcsid[] = "$NetBSD: wwinsline.c,v 1.3 1995/09/28 10:35:36 tls Exp $";
+#endif
+#endif /* not lint */
+
+#include "ww.h"
+
+wwinsline(w, row)
+register struct ww *w;
+int row;
+{
+	register i;
+	register union ww_char **cpp, **cqq;
+	register union ww_char *cp;
+	int row1, row2;
+	char deleted;
+	int visible;
+
+	/*
+	 * Scroll first.
+	 */
+	if ((row1 = row) < w->ww_i.t) {
+		row1 = w->ww_i.t;
+		visible = 0;
+	} else
+		visible = 1;
+	if ((row2 = w->ww_b.b) > w->ww_i.b) {
+		row2 = w->ww_i.b;
+	}
+	deleted = wwscroll1(w, row1, row2, -1, visible);
+
+	/*
+	 * Fix the buffer.
+	 * But leave clearing the last line for wwclreol().
+	 */
+	cpp = &w->ww_buf[w->ww_b.b];
+	cqq = cpp - 1;
+	cp = *cqq;
+	for (i = w->ww_b.b - row; --i > 0;)
+		*--cpp = *--cqq;
+	*cqq = cp;
+
+	/*
+	 * Now clear the last line.
+	 */
+	if (visible)
+		wwclreol1(w, row, w->ww_b.l, deleted);
+	else {
+		cp += w->ww_b.l;
+		for (i = w->ww_b.nc; --i >= 0;)
+			cp++->c_w = ' ';
+	}
+}