1 files changed, 81 insertions, 0 deletions
diff --git a/lib/libcurses/insertln.c b/lib/libcurses/insertln.c
new file mode 100644
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--- /dev/null
+++ b/lib/libcurses/insertln.c
@@ -0,0 +1,81 @@
+/*
+ * 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[] = "@(#)insertln.c	8.1 (Berkeley) 6/4/93";
+#endif	/* not lint */
+
+#include <curses.h>
+#include <string.h>
+
+/*
+ * winsertln --
+ *	Do an insert-line on the window, leaving (cury, curx) unchanged.
+ */
+int
+winsertln(win)
+	register WINDOW *win;
+{
+
+	register int y, i;
+	register __LINE *temp;
+
+#ifdef DEBUG
+	__CTRACE("insertln: (%0.2o)\n", win);
+#endif
+	if (win->orig == NULL)
+		temp = win->lines[win->maxy - 1];
+	for (y = win->maxy - 1; y > win->cury; --y) {
+		win->lines[y]->flags &= ~__ISPASTEOL;
+		win->lines[y - 1]->flags &= ~__ISPASTEOL;
+		if (win->orig == NULL)
+			win->lines[y] = win->lines[y - 1];
+		else
+			(void)memcpy(win->lines[y]->line, 
+			    win->lines[y - 1]->line, 
+			    win->maxx * __LDATASIZE);
+		__touchline(win, y, 0, win->maxx - 1, 0);
+	}
+	if (win->orig == NULL)
+		win->lines[y] = temp;
+	else
+		temp = win->lines[y];
+	for(i = 0; i < win->maxx; i++) {
+		temp->line[i].ch = ' ';
+		temp->line[i].attr = 0;
+	}
+	__touchline(win, y, 0, win->maxx - 1, 0);
+	if (win->orig == NULL)
+		__id_subwins(win);
+	return (OK);
+}