1 files changed, 68 insertions, 0 deletions
diff --git a/lib/libcurses/insch.c b/lib/libcurses/insch.c
new file mode 100644
index 000000000000..5ec1c9a7d861
--- /dev/null
+++ b/lib/libcurses/insch.c
@@ -0,0 +1,68 @@
+/*
+ * 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[] = "@(#)insch.c	5.4 (Berkeley) 6/1/90";
+#endif /* not lint */
+
+# include	"curses.ext"
+
+/*
+ *	This routine performs an insert-char on the line, leaving
+ * (_cury,_curx) unchanged.
+ *
+ */
+winsch(win, c)
+reg WINDOW	*win;
+char c; {
+
+	reg chtype      *temp1, *temp2;
+	reg chtype      *end;
+
+	end = &win->_y[win->_cury][win->_curx];
+	temp1 = &win->_y[win->_cury][win->_maxx - 1];
+	temp2 = temp1 - 1;
+	while (temp1 > end)
+		*temp1-- = *temp2--;
+	*temp1 = (unsigned char) c;
+	touchline(win, win->_cury, win->_curx, win->_maxx - 1);
+	if (win->_cury == LINES - 1 && win->_y[LINES-1][COLS-1] != ' ')
+		if (win->_scroll) {
+			wrefresh(win);
+			scroll(win);
+			win->_cury--;
+		}
+		else
+			return ERR;
+	return OK;
+}